From 8ccd586b2016d7904504921800d127d3bd7b13f6 Mon Sep 17 00:00:00 2001 From: "dependabot[bot]" <49699333+dependabot[bot]@users.noreply.github.com> Date: Tue, 25 Oct 2022 17:24:32 +0000 Subject: [PATCH] Bump github.com/spf13/cobra from 0.0.5 to 1.6.1 Bumps [github.com/spf13/cobra](https://github.com/spf13/cobra) from 0.0.5 to 1.6.1. - [Release notes](https://github.com/spf13/cobra/releases) - [Commits](https://github.com/spf13/cobra/compare/0.0.5...v1.6.1) --- updated-dependencies: - dependency-name: github.com/spf13/cobra dependency-type: direct:production update-type: version-update:semver-major ... Signed-off-by: dependabot[bot] --- go.mod | 2 +- go.sum | 12 +- .../cpuguy83/go-md2man/md2man/md2man.go | 20 - .../cpuguy83/go-md2man/md2man/roff.go | 285 -- .../cpuguy83/go-md2man/{ => v2}/LICENSE.md | 0 .../cpuguy83/go-md2man/v2/md2man/md2man.go | 14 + .../cpuguy83/go-md2man/v2/md2man/roff.go | 336 ++ .../inconshreveable/mousetrap/LICENSE | 208 +- .../inconshreveable/mousetrap/go.mod | 3 + .../russross/blackfriday/v2/.gitignore | 8 + .../russross/blackfriday/v2/.travis.yml | 17 + .../russross/blackfriday/v2/LICENSE.txt | 29 + .../russross/blackfriday/v2/README.md | 335 ++ .../russross/blackfriday/v2/block.go | 1612 +++++++++ .../github.com/russross/blackfriday/v2/doc.go | 46 + .../russross/blackfriday/v2/entities.go | 2236 ++++++++++++ .../github.com/russross/blackfriday/v2/esc.go | 70 + .../github.com/russross/blackfriday/v2/go.mod | 1 + .../russross/blackfriday/v2/html.go | 952 ++++++ .../russross/blackfriday/v2/inline.go | 1228 +++++++ .../russross/blackfriday/v2/markdown.go | 950 ++++++ .../russross/blackfriday/v2/node.go | 360 ++ .../russross/blackfriday/v2/smartypants.go | 457 +++ vendor/github.com/spf13/cobra/.gitignore | 5 +- vendor/github.com/spf13/cobra/.golangci.yml | 62 + vendor/github.com/spf13/cobra/.travis.yml | 31 - vendor/github.com/spf13/cobra/CONDUCT.md | 37 + vendor/github.com/spf13/cobra/CONTRIBUTING.md | 50 + vendor/github.com/spf13/cobra/MAINTAINERS | 13 + vendor/github.com/spf13/cobra/Makefile | 35 + vendor/github.com/spf13/cobra/README.md | 689 +--- vendor/github.com/spf13/cobra/active_help.go | 63 + vendor/github.com/spf13/cobra/active_help.md | 157 + vendor/github.com/spf13/cobra/args.go | 56 +- .../spf13/cobra/bash_completions.go | 349 +- .../spf13/cobra/bash_completions.md | 181 +- .../spf13/cobra/bash_completionsV2.go | 383 +++ vendor/github.com/spf13/cobra/cobra.go | 44 +- vendor/github.com/spf13/cobra/command.go | 386 ++- .../github.com/spf13/cobra/command_notwin.go | 15 + vendor/github.com/spf13/cobra/command_win.go | 15 + vendor/github.com/spf13/cobra/completions.go | 871 +++++ vendor/github.com/spf13/cobra/doc/README.md | 17 + vendor/github.com/spf13/cobra/doc/man_docs.go | 51 +- vendor/github.com/spf13/cobra/doc/md_docs.go | 25 +- vendor/github.com/spf13/cobra/doc/md_docs.md | 4 +- .../github.com/spf13/cobra/doc/rest_docs.go | 13 +- .../github.com/spf13/cobra/doc/rest_docs.md | 2 +- vendor/github.com/spf13/cobra/doc/util.go | 7 +- .../github.com/spf13/cobra/doc/yaml_docs.go | 16 +- .../github.com/spf13/cobra/doc/yaml_docs.md | 2 +- .../spf13/cobra/fish_completions.go | 234 ++ .../spf13/cobra/fish_completions.md | 4 + vendor/github.com/spf13/cobra/flag_groups.go | 224 ++ vendor/github.com/spf13/cobra/go.mod | 13 +- vendor/github.com/spf13/cobra/go.sum | 59 +- .../spf13/cobra/powershell_completions.go | 342 +- .../spf13/cobra/powershell_completions.md | 13 +- .../spf13/cobra/projects_using_cobra.md | 60 + .../spf13/cobra/shell_completions.go | 67 +- .../spf13/cobra/shell_completions.md | 568 +++ vendor/github.com/spf13/cobra/user_guide.md | 695 ++++ .../github.com/spf13/cobra/zsh_completions.go | 563 ++- .../github.com/spf13/cobra/zsh_completions.md | 87 +- vendor/gopkg.in/yaml.v3/LICENSE | 50 + vendor/gopkg.in/yaml.v3/NOTICE | 13 + vendor/gopkg.in/yaml.v3/README.md | 150 + vendor/gopkg.in/yaml.v3/apic.go | 747 ++++ vendor/gopkg.in/yaml.v3/decode.go | 1000 ++++++ vendor/gopkg.in/yaml.v3/emitterc.go | 2020 +++++++++++ vendor/gopkg.in/yaml.v3/encode.go | 577 ++++ vendor/gopkg.in/yaml.v3/go.mod | 5 + vendor/gopkg.in/yaml.v3/parserc.go | 1258 +++++++ vendor/gopkg.in/yaml.v3/readerc.go | 434 +++ vendor/gopkg.in/yaml.v3/resolve.go | 326 ++ vendor/gopkg.in/yaml.v3/scannerc.go | 3038 +++++++++++++++++ vendor/gopkg.in/yaml.v3/sorter.go | 134 + vendor/gopkg.in/yaml.v3/writerc.go | 48 + vendor/gopkg.in/yaml.v3/yaml.go | 698 ++++ vendor/gopkg.in/yaml.v3/yamlh.go | 807 +++++ vendor/gopkg.in/yaml.v3/yamlprivateh.go | 198 ++ vendor/modules.txt | 12 +- 82 files changed, 25264 insertions(+), 1940 deletions(-) delete mode 100644 vendor/github.com/cpuguy83/go-md2man/md2man/md2man.go delete mode 100644 vendor/github.com/cpuguy83/go-md2man/md2man/roff.go rename vendor/github.com/cpuguy83/go-md2man/{ => v2}/LICENSE.md (100%) create mode 100644 vendor/github.com/cpuguy83/go-md2man/v2/md2man/md2man.go create mode 100644 vendor/github.com/cpuguy83/go-md2man/v2/md2man/roff.go create mode 100644 vendor/github.com/inconshreveable/mousetrap/go.mod create mode 100644 vendor/github.com/russross/blackfriday/v2/.gitignore create mode 100644 vendor/github.com/russross/blackfriday/v2/.travis.yml create mode 100644 vendor/github.com/russross/blackfriday/v2/LICENSE.txt create mode 100644 vendor/github.com/russross/blackfriday/v2/README.md create mode 100644 vendor/github.com/russross/blackfriday/v2/block.go create mode 100644 vendor/github.com/russross/blackfriday/v2/doc.go create mode 100644 vendor/github.com/russross/blackfriday/v2/entities.go create mode 100644 vendor/github.com/russross/blackfriday/v2/esc.go create mode 100644 vendor/github.com/russross/blackfriday/v2/go.mod create mode 100644 vendor/github.com/russross/blackfriday/v2/html.go create mode 100644 vendor/github.com/russross/blackfriday/v2/inline.go create mode 100644 vendor/github.com/russross/blackfriday/v2/markdown.go create mode 100644 vendor/github.com/russross/blackfriday/v2/node.go create mode 100644 vendor/github.com/russross/blackfriday/v2/smartypants.go create mode 100644 vendor/github.com/spf13/cobra/.golangci.yml delete mode 100644 vendor/github.com/spf13/cobra/.travis.yml create mode 100644 vendor/github.com/spf13/cobra/CONDUCT.md create mode 100644 vendor/github.com/spf13/cobra/CONTRIBUTING.md create mode 100644 vendor/github.com/spf13/cobra/MAINTAINERS create mode 100644 vendor/github.com/spf13/cobra/Makefile create mode 100644 vendor/github.com/spf13/cobra/active_help.go create mode 100644 vendor/github.com/spf13/cobra/active_help.md create mode 100644 vendor/github.com/spf13/cobra/bash_completionsV2.go create mode 100644 vendor/github.com/spf13/cobra/completions.go create mode 100644 vendor/github.com/spf13/cobra/doc/README.md create mode 100644 vendor/github.com/spf13/cobra/fish_completions.go create mode 100644 vendor/github.com/spf13/cobra/fish_completions.md create mode 100644 vendor/github.com/spf13/cobra/flag_groups.go create mode 100644 vendor/github.com/spf13/cobra/projects_using_cobra.md create mode 100644 vendor/github.com/spf13/cobra/shell_completions.md create mode 100644 vendor/github.com/spf13/cobra/user_guide.md create mode 100644 vendor/gopkg.in/yaml.v3/LICENSE create mode 100644 vendor/gopkg.in/yaml.v3/NOTICE create mode 100644 vendor/gopkg.in/yaml.v3/README.md create mode 100644 vendor/gopkg.in/yaml.v3/apic.go create mode 100644 vendor/gopkg.in/yaml.v3/decode.go create mode 100644 vendor/gopkg.in/yaml.v3/emitterc.go create mode 100644 vendor/gopkg.in/yaml.v3/encode.go create mode 100644 vendor/gopkg.in/yaml.v3/go.mod create mode 100644 vendor/gopkg.in/yaml.v3/parserc.go create mode 100644 vendor/gopkg.in/yaml.v3/readerc.go create mode 100644 vendor/gopkg.in/yaml.v3/resolve.go create mode 100644 vendor/gopkg.in/yaml.v3/scannerc.go create mode 100644 vendor/gopkg.in/yaml.v3/sorter.go create mode 100644 vendor/gopkg.in/yaml.v3/writerc.go create mode 100644 vendor/gopkg.in/yaml.v3/yaml.go create mode 100644 vendor/gopkg.in/yaml.v3/yamlh.go create mode 100644 vendor/gopkg.in/yaml.v3/yamlprivateh.go diff --git a/go.mod b/go.mod index 6e14f58c7..2a1b38da2 100644 --- a/go.mod +++ b/go.mod @@ -12,7 +12,7 @@ require ( github.com/prometheus/client_golang v1.0.0 github.com/prometheus/common v0.4.1 github.com/sirupsen/logrus v1.4.2 - github.com/spf13/cobra v0.0.5 + github.com/spf13/cobra v1.6.1 github.com/spf13/viper v1.7.1 github.com/stretchr/testify v1.4.0 //github.com/stretchr/testify v1.4.0 diff --git a/go.sum b/go.sum index 46a846ca1..959f85a8a 100644 --- a/go.sum +++ b/go.sum @@ -70,6 +70,8 @@ github.com/coreos/pkg v0.0.0-20180108230652-97fdf19511ea/go.mod h1:E3G3o1h8I7cfc github.com/coreos/pkg v0.0.0-20180928190104-399ea9e2e55f/go.mod h1:E3G3o1h8I7cfcXa63jLwjI0eiQQMgzzUDFVpN/nH/eA= github.com/cpuguy83/go-md2man v1.0.10 h1:BSKMNlYxDvnunlTymqtgONjNnaRV1sTpcovwwjF22jk= github.com/cpuguy83/go-md2man v1.0.10/go.mod h1:SmD6nW6nTyfqj6ABTjUi3V3JVMnlJmwcJI5acqYI6dE= +github.com/cpuguy83/go-md2man/v2 v2.0.2 h1:p1EgwI/C7NhT0JmVkwCD2ZBK8j4aeHQX2pMHHBfMQ6w= +github.com/cpuguy83/go-md2man/v2 v2.0.2/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o= github.com/creack/pty v1.1.7/go.mod h1:lj5s0c3V2DBrqTV7llrYr5NG6My20zk30Fl46Y7DoTY= github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c= @@ -258,8 +260,9 @@ github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpO github.com/imdario/mergo v0.3.5/go.mod h1:2EnlNZ0deacrJVfApfmtdGgDfMuh/nq6Ok1EcJh5FfA= github.com/imdario/mergo v0.3.9 h1:UauaLniWCFHWd+Jp9oCEkTBj8VO/9DKg3PV3VCNMDIg= github.com/imdario/mergo v0.3.9/go.mod h1:2EnlNZ0deacrJVfApfmtdGgDfMuh/nq6Ok1EcJh5FfA= -github.com/inconshreveable/mousetrap v1.0.0 h1:Z8tu5sraLXCXIcARxBp/8cbvlwVa7Z1NHg9XEKhtSvM= github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANytuPF1OarO4DADm73n8= +github.com/inconshreveable/mousetrap v1.0.1 h1:U3uMjPSQEBMNp1lFxmllqCPM6P5u/Xq7Pgzkat/bFNc= +github.com/inconshreveable/mousetrap v1.0.1/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw= github.com/jonboulle/clockwork v0.1.0/go.mod h1:Ii8DK3G1RaLaWxj9trq07+26W01tbo22gdxWY5EU2bo= github.com/json-iterator/go v1.1.6/go.mod h1:+SdeFBvtyEkXs7REEP0seUULqWtbJapLOCVDaaPEHmU= github.com/json-iterator/go v1.1.7/go.mod h1:KdQUCv79m/52Kvf8AW2vK1V8akMuk1QjK/uOdHXbAo4= @@ -375,6 +378,8 @@ github.com/rogpeppe/fastuuid v0.0.0-20150106093220-6724a57986af/go.mod h1:XWv6So github.com/rogpeppe/go-internal v1.3.0/go.mod h1:M8bDsm7K2OlrFYOpmOWEs/qY81heoFRclV5y23lUDJ4= github.com/russross/blackfriday v1.5.2 h1:HyvC0ARfnZBqnXwABFeSZHpKvJHJJfPz81GNueLj0oo= github.com/russross/blackfriday v1.5.2/go.mod h1:JO/DiYxRf+HjHt06OyowR9PTA263kcR/rfWxYHBV53g= +github.com/russross/blackfriday/v2 v2.1.0 h1:JIOH55/0cWyOuilr9/qlrm0BSXldqnqwMsf35Ld67mk= +github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM= github.com/ryanuber/columnize v0.0.0-20160712163229-9b3edd62028f/go.mod h1:sm1tb6uqfes/u+d4ooFouqFdy9/2g9QGwK3SQygK0Ts= github.com/sean-/seed v0.0.0-20170313163322-e2103e2c3529/go.mod h1:DxrIzT+xaE7yg65j358z/aeFdxmN0P9QXhEzd20vsDc= github.com/sergi/go-diff v1.0.0/go.mod h1:0CfEIISq7TuYL3j771MWULgwwjU+GofnZX9QAmXWZgo= @@ -393,8 +398,9 @@ github.com/spf13/afero v1.2.2/go.mod h1:9ZxEEn6pIJ8Rxe320qSDBk6AsU0r9pR7Q4OcevTd github.com/spf13/cast v1.3.0 h1:oget//CVOEoFewqQxwr0Ej5yjygnqGkvggSE/gB35Q8= github.com/spf13/cast v1.3.0/go.mod h1:Qx5cxh0v+4UWYiBimWS+eyWzqEqokIECu5etghLkUJE= github.com/spf13/cobra v0.0.3/go.mod h1:1l0Ry5zgKvJasoi3XT1TypsSe7PqH0Sj9dhYf7v3XqQ= -github.com/spf13/cobra v0.0.5 h1:f0B+LkLX6DtmRH1isoNA9VTtNUK9K8xYd28JNNfOv/s= github.com/spf13/cobra v0.0.5/go.mod h1:3K3wKZymM7VvHMDS9+Akkh4K60UwM26emMESw8tLCHU= +github.com/spf13/cobra v1.6.1 h1:o94oiPyS4KD1mPy2fmcYYHHfCxLqYjJOhGsCHFZtEzA= +github.com/spf13/cobra v1.6.1/go.mod h1:IOw/AERYS7UzyrGinqmz6HLUo219MORXGxhbaJUqzrY= github.com/spf13/jwalterweatherman v1.0.0 h1:XHEdyB+EcvlqZamSM4ZOMGlc93t6AcsBEu9Gc1vn7yk= github.com/spf13/jwalterweatherman v1.0.0/go.mod h1:cQK4TGJAtQXfYWX+Ddv3mKDzgVb68N+wFjFa4jdeBTo= github.com/spf13/pflag v0.0.0-20170130214245-9ff6c6923cff/go.mod h1:DYY7MBk1bdzusC3SYhjObp+wFpr4gzcvqqNjLnInEg4= @@ -599,6 +605,8 @@ gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= gopkg.in/yaml.v2 v2.3.0 h1:clyUAQHOM3G0M3f5vQj7LuJrETvjVot3Z5el9nffUtU= gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= +gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA= +gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= gotest.tools v2.2.0+incompatible h1:VsBPFP1AI068pPrMxtb/S8Zkgf9xEmTLJjfM+P5UIEo= gotest.tools v2.2.0+incompatible/go.mod h1:DsYFclhRJ6vuDpmuTbkuFWG+y2sxOXAzmJt81HFBacw= honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= diff --git a/vendor/github.com/cpuguy83/go-md2man/md2man/md2man.go b/vendor/github.com/cpuguy83/go-md2man/md2man/md2man.go deleted file mode 100644 index af62279a6..000000000 --- a/vendor/github.com/cpuguy83/go-md2man/md2man/md2man.go +++ /dev/null @@ -1,20 +0,0 @@ -package md2man - -import ( - "github.com/russross/blackfriday" -) - -// Render converts a markdown document into a roff formatted document. -func Render(doc []byte) []byte { - renderer := RoffRenderer(0) - extensions := 0 - extensions |= blackfriday.EXTENSION_NO_INTRA_EMPHASIS - extensions |= blackfriday.EXTENSION_TABLES - extensions |= blackfriday.EXTENSION_FENCED_CODE - extensions |= blackfriday.EXTENSION_AUTOLINK - extensions |= blackfriday.EXTENSION_SPACE_HEADERS - extensions |= blackfriday.EXTENSION_FOOTNOTES - extensions |= blackfriday.EXTENSION_TITLEBLOCK - - return blackfriday.Markdown(doc, renderer, extensions) -} diff --git a/vendor/github.com/cpuguy83/go-md2man/md2man/roff.go b/vendor/github.com/cpuguy83/go-md2man/md2man/roff.go deleted file mode 100644 index 8c29ec687..000000000 --- a/vendor/github.com/cpuguy83/go-md2man/md2man/roff.go +++ /dev/null @@ -1,285 +0,0 @@ -package md2man - -import ( - "bytes" - "fmt" - "html" - "strings" - - "github.com/russross/blackfriday" -) - -type roffRenderer struct { - ListCounters []int -} - -// RoffRenderer creates a new blackfriday Renderer for generating roff documents -// from markdown -func RoffRenderer(flags int) blackfriday.Renderer { - return &roffRenderer{} -} - -func (r *roffRenderer) GetFlags() int { - return 0 -} - -func (r *roffRenderer) TitleBlock(out *bytes.Buffer, text []byte) { - out.WriteString(".TH ") - - splitText := bytes.Split(text, []byte("\n")) - for i, line := range splitText { - line = bytes.TrimPrefix(line, []byte("% ")) - if i == 0 { - line = bytes.Replace(line, []byte("("), []byte("\" \""), 1) - line = bytes.Replace(line, []byte(")"), []byte("\" \""), 1) - } - line = append([]byte("\""), line...) - line = append(line, []byte("\" ")...) - out.Write(line) - } - out.WriteString("\n") - - // disable hyphenation - out.WriteString(".nh\n") - // disable justification (adjust text to left margin only) - out.WriteString(".ad l\n") -} - -func (r *roffRenderer) BlockCode(out *bytes.Buffer, text []byte, lang string) { - out.WriteString("\n.PP\n.RS\n\n.nf\n") - escapeSpecialChars(out, text) - out.WriteString("\n.fi\n.RE\n") -} - -func (r *roffRenderer) BlockQuote(out *bytes.Buffer, text []byte) { - out.WriteString("\n.PP\n.RS\n") - out.Write(text) - out.WriteString("\n.RE\n") -} - -func (r *roffRenderer) BlockHtml(out *bytes.Buffer, text []byte) { // nolint: golint - out.Write(text) -} - -func (r *roffRenderer) Header(out *bytes.Buffer, text func() bool, level int, id string) { - marker := out.Len() - - switch { - case marker == 0: - // This is the doc header - out.WriteString(".TH ") - case level == 1: - out.WriteString("\n\n.SH ") - case level == 2: - out.WriteString("\n.SH ") - default: - out.WriteString("\n.SS ") - } - - if !text() { - out.Truncate(marker) - return - } -} - -func (r *roffRenderer) HRule(out *bytes.Buffer) { - out.WriteString("\n.ti 0\n\\l'\\n(.lu'\n") -} - -func (r *roffRenderer) List(out *bytes.Buffer, text func() bool, flags int) { - marker := out.Len() - r.ListCounters = append(r.ListCounters, 1) - out.WriteString("\n.RS\n") - if !text() { - out.Truncate(marker) - return - } - r.ListCounters = r.ListCounters[:len(r.ListCounters)-1] - out.WriteString("\n.RE\n") -} - -func (r *roffRenderer) ListItem(out *bytes.Buffer, text []byte, flags int) { - if flags&blackfriday.LIST_TYPE_ORDERED != 0 { - out.WriteString(fmt.Sprintf(".IP \"%3d.\" 5\n", r.ListCounters[len(r.ListCounters)-1])) - r.ListCounters[len(r.ListCounters)-1]++ - } else { - out.WriteString(".IP \\(bu 2\n") - } - out.Write(text) - out.WriteString("\n") -} - -func (r *roffRenderer) Paragraph(out *bytes.Buffer, text func() bool) { - marker := out.Len() - out.WriteString("\n.PP\n") - if !text() { - out.Truncate(marker) - return - } - if marker != 0 { - out.WriteString("\n") - } -} - -func (r *roffRenderer) Table(out *bytes.Buffer, header []byte, body []byte, columnData []int) { - out.WriteString("\n.TS\nallbox;\n") - - maxDelims := 0 - lines := strings.Split(strings.TrimRight(string(header), "\n")+"\n"+strings.TrimRight(string(body), "\n"), "\n") - for _, w := range lines { - curDelims := strings.Count(w, "\t") - if curDelims > maxDelims { - maxDelims = curDelims - } - } - out.Write([]byte(strings.Repeat("l ", maxDelims+1) + "\n")) - out.Write([]byte(strings.Repeat("l ", maxDelims+1) + ".\n")) - out.Write(header) - if len(header) > 0 { - out.Write([]byte("\n")) - } - - out.Write(body) - out.WriteString("\n.TE\n") -} - -func (r *roffRenderer) TableRow(out *bytes.Buffer, text []byte) { - if out.Len() > 0 { - out.WriteString("\n") - } - out.Write(text) -} - -func (r *roffRenderer) TableHeaderCell(out *bytes.Buffer, text []byte, align int) { - if out.Len() > 0 { - out.WriteString("\t") - } - if len(text) == 0 { - text = []byte{' '} - } - out.Write([]byte("\\fB\\fC" + string(text) + "\\fR")) -} - -func (r *roffRenderer) TableCell(out *bytes.Buffer, text []byte, align int) { - if out.Len() > 0 { - out.WriteString("\t") - } - if len(text) > 30 { - text = append([]byte("T{\n"), text...) - text = append(text, []byte("\nT}")...) - } - if len(text) == 0 { - text = []byte{' '} - } - out.Write(text) -} - -func (r *roffRenderer) Footnotes(out *bytes.Buffer, text func() bool) { - -} - -func (r *roffRenderer) FootnoteItem(out *bytes.Buffer, name, text []byte, flags int) { - -} - -func (r *roffRenderer) AutoLink(out *bytes.Buffer, link []byte, kind int) { - out.WriteString("\n\\[la]") - out.Write(link) - out.WriteString("\\[ra]") -} - -func (r *roffRenderer) CodeSpan(out *bytes.Buffer, text []byte) { - out.WriteString("\\fB\\fC") - escapeSpecialChars(out, text) - out.WriteString("\\fR") -} - -func (r *roffRenderer) DoubleEmphasis(out *bytes.Buffer, text []byte) { - out.WriteString("\\fB") - out.Write(text) - out.WriteString("\\fP") -} - -func (r *roffRenderer) Emphasis(out *bytes.Buffer, text []byte) { - out.WriteString("\\fI") - out.Write(text) - out.WriteString("\\fP") -} - -func (r *roffRenderer) Image(out *bytes.Buffer, link []byte, title []byte, alt []byte) { -} - -func (r *roffRenderer) LineBreak(out *bytes.Buffer) { - out.WriteString("\n.br\n") -} - -func (r *roffRenderer) Link(out *bytes.Buffer, link []byte, title []byte, content []byte) { - out.Write(content) - r.AutoLink(out, link, 0) -} - -func (r *roffRenderer) RawHtmlTag(out *bytes.Buffer, tag []byte) { // nolint: golint - out.Write(tag) -} - -func (r *roffRenderer) TripleEmphasis(out *bytes.Buffer, text []byte) { - out.WriteString("\\s+2") - out.Write(text) - out.WriteString("\\s-2") -} - -func (r *roffRenderer) StrikeThrough(out *bytes.Buffer, text []byte) { -} - -func (r *roffRenderer) FootnoteRef(out *bytes.Buffer, ref []byte, id int) { - -} - -func (r *roffRenderer) Entity(out *bytes.Buffer, entity []byte) { - out.WriteString(html.UnescapeString(string(entity))) -} - -func (r *roffRenderer) NormalText(out *bytes.Buffer, text []byte) { - escapeSpecialChars(out, text) -} - -func (r *roffRenderer) DocumentHeader(out *bytes.Buffer) { -} - -func (r *roffRenderer) DocumentFooter(out *bytes.Buffer) { -} - -func needsBackslash(c byte) bool { - for _, r := range []byte("-_&\\~") { - if c == r { - return true - } - } - return false -} - -func escapeSpecialChars(out *bytes.Buffer, text []byte) { - for i := 0; i < len(text); i++ { - // escape initial apostrophe or period - if len(text) >= 1 && (text[0] == '\'' || text[0] == '.') { - out.WriteString("\\&") - } - - // directly copy normal characters - org := i - - for i < len(text) && !needsBackslash(text[i]) { - i++ - } - if i > org { - out.Write(text[org:i]) - } - - // escape a character - if i >= len(text) { - break - } - out.WriteByte('\\') - out.WriteByte(text[i]) - } -} diff --git a/vendor/github.com/cpuguy83/go-md2man/LICENSE.md b/vendor/github.com/cpuguy83/go-md2man/v2/LICENSE.md similarity index 100% rename from vendor/github.com/cpuguy83/go-md2man/LICENSE.md rename to vendor/github.com/cpuguy83/go-md2man/v2/LICENSE.md diff --git a/vendor/github.com/cpuguy83/go-md2man/v2/md2man/md2man.go b/vendor/github.com/cpuguy83/go-md2man/v2/md2man/md2man.go new file mode 100644 index 000000000..b48005673 --- /dev/null +++ b/vendor/github.com/cpuguy83/go-md2man/v2/md2man/md2man.go @@ -0,0 +1,14 @@ +package md2man + +import ( + "github.com/russross/blackfriday/v2" +) + +// Render converts a markdown document into a roff formatted document. +func Render(doc []byte) []byte { + renderer := NewRoffRenderer() + + return blackfriday.Run(doc, + []blackfriday.Option{blackfriday.WithRenderer(renderer), + blackfriday.WithExtensions(renderer.GetExtensions())}...) +} diff --git a/vendor/github.com/cpuguy83/go-md2man/v2/md2man/roff.go b/vendor/github.com/cpuguy83/go-md2man/v2/md2man/roff.go new file mode 100644 index 000000000..be2b34360 --- /dev/null +++ b/vendor/github.com/cpuguy83/go-md2man/v2/md2man/roff.go @@ -0,0 +1,336 @@ +package md2man + +import ( + "fmt" + "io" + "os" + "strings" + + "github.com/russross/blackfriday/v2" +) + +// roffRenderer implements the blackfriday.Renderer interface for creating +// roff format (manpages) from markdown text +type roffRenderer struct { + extensions blackfriday.Extensions + listCounters []int + firstHeader bool + firstDD bool + listDepth int +} + +const ( + titleHeader = ".TH " + topLevelHeader = "\n\n.SH " + secondLevelHdr = "\n.SH " + otherHeader = "\n.SS " + crTag = "\n" + emphTag = "\\fI" + emphCloseTag = "\\fP" + strongTag = "\\fB" + strongCloseTag = "\\fP" + breakTag = "\n.br\n" + paraTag = "\n.PP\n" + hruleTag = "\n.ti 0\n\\l'\\n(.lu'\n" + linkTag = "\n\\[la]" + linkCloseTag = "\\[ra]" + codespanTag = "\\fB\\fC" + codespanCloseTag = "\\fR" + codeTag = "\n.PP\n.RS\n\n.nf\n" + codeCloseTag = "\n.fi\n.RE\n" + quoteTag = "\n.PP\n.RS\n" + quoteCloseTag = "\n.RE\n" + listTag = "\n.RS\n" + listCloseTag = "\n.RE\n" + dtTag = "\n.TP\n" + dd2Tag = "\n" + tableStart = "\n.TS\nallbox;\n" + tableEnd = ".TE\n" + tableCellStart = "T{\n" + tableCellEnd = "\nT}\n" +) + +// NewRoffRenderer creates a new blackfriday Renderer for generating roff documents +// from markdown +func NewRoffRenderer() *roffRenderer { // nolint: golint + var extensions blackfriday.Extensions + + extensions |= blackfriday.NoIntraEmphasis + extensions |= blackfriday.Tables + extensions |= blackfriday.FencedCode + extensions |= blackfriday.SpaceHeadings + extensions |= blackfriday.Footnotes + extensions |= blackfriday.Titleblock + extensions |= blackfriday.DefinitionLists + return &roffRenderer{ + extensions: extensions, + } +} + +// GetExtensions returns the list of extensions used by this renderer implementation +func (r *roffRenderer) GetExtensions() blackfriday.Extensions { + return r.extensions +} + +// RenderHeader handles outputting the header at document start +func (r *roffRenderer) RenderHeader(w io.Writer, ast *blackfriday.Node) { + // disable hyphenation + out(w, ".nh\n") +} + +// RenderFooter handles outputting the footer at the document end; the roff +// renderer has no footer information +func (r *roffRenderer) RenderFooter(w io.Writer, ast *blackfriday.Node) { +} + +// RenderNode is called for each node in a markdown document; based on the node +// type the equivalent roff output is sent to the writer +func (r *roffRenderer) RenderNode(w io.Writer, node *blackfriday.Node, entering bool) blackfriday.WalkStatus { + + var walkAction = blackfriday.GoToNext + + switch node.Type { + case blackfriday.Text: + escapeSpecialChars(w, node.Literal) + case blackfriday.Softbreak: + out(w, crTag) + case blackfriday.Hardbreak: + out(w, breakTag) + case blackfriday.Emph: + if entering { + out(w, emphTag) + } else { + out(w, emphCloseTag) + } + case blackfriday.Strong: + if entering { + out(w, strongTag) + } else { + out(w, strongCloseTag) + } + case blackfriday.Link: + if !entering { + out(w, linkTag+string(node.LinkData.Destination)+linkCloseTag) + } + case blackfriday.Image: + // ignore images + walkAction = blackfriday.SkipChildren + case blackfriday.Code: + out(w, codespanTag) + escapeSpecialChars(w, node.Literal) + out(w, codespanCloseTag) + case blackfriday.Document: + break + case blackfriday.Paragraph: + // roff .PP markers break lists + if r.listDepth > 0 { + return blackfriday.GoToNext + } + if entering { + out(w, paraTag) + } else { + out(w, crTag) + } + case blackfriday.BlockQuote: + if entering { + out(w, quoteTag) + } else { + out(w, quoteCloseTag) + } + case blackfriday.Heading: + r.handleHeading(w, node, entering) + case blackfriday.HorizontalRule: + out(w, hruleTag) + case blackfriday.List: + r.handleList(w, node, entering) + case blackfriday.Item: + r.handleItem(w, node, entering) + case blackfriday.CodeBlock: + out(w, codeTag) + escapeSpecialChars(w, node.Literal) + out(w, codeCloseTag) + case blackfriday.Table: + r.handleTable(w, node, entering) + case blackfriday.TableHead: + case blackfriday.TableBody: + case blackfriday.TableRow: + // no action as cell entries do all the nroff formatting + return blackfriday.GoToNext + case blackfriday.TableCell: + r.handleTableCell(w, node, entering) + case blackfriday.HTMLSpan: + // ignore other HTML tags + default: + fmt.Fprintln(os.Stderr, "WARNING: go-md2man does not handle node type "+node.Type.String()) + } + return walkAction +} + +func (r *roffRenderer) handleHeading(w io.Writer, node *blackfriday.Node, entering bool) { + if entering { + switch node.Level { + case 1: + if !r.firstHeader { + out(w, titleHeader) + r.firstHeader = true + break + } + out(w, topLevelHeader) + case 2: + out(w, secondLevelHdr) + default: + out(w, otherHeader) + } + } +} + +func (r *roffRenderer) handleList(w io.Writer, node *blackfriday.Node, entering bool) { + openTag := listTag + closeTag := listCloseTag + if node.ListFlags&blackfriday.ListTypeDefinition != 0 { + // tags for definition lists handled within Item node + openTag = "" + closeTag = "" + } + if entering { + r.listDepth++ + if node.ListFlags&blackfriday.ListTypeOrdered != 0 { + r.listCounters = append(r.listCounters, 1) + } + out(w, openTag) + } else { + if node.ListFlags&blackfriday.ListTypeOrdered != 0 { + r.listCounters = r.listCounters[:len(r.listCounters)-1] + } + out(w, closeTag) + r.listDepth-- + } +} + +func (r *roffRenderer) handleItem(w io.Writer, node *blackfriday.Node, entering bool) { + if entering { + if node.ListFlags&blackfriday.ListTypeOrdered != 0 { + out(w, fmt.Sprintf(".IP \"%3d.\" 5\n", r.listCounters[len(r.listCounters)-1])) + r.listCounters[len(r.listCounters)-1]++ + } else if node.ListFlags&blackfriday.ListTypeTerm != 0 { + // DT (definition term): line just before DD (see below). + out(w, dtTag) + r.firstDD = true + } else if node.ListFlags&blackfriday.ListTypeDefinition != 0 { + // DD (definition description): line that starts with ": ". + // + // We have to distinguish between the first DD and the + // subsequent ones, as there should be no vertical + // whitespace between the DT and the first DD. + if r.firstDD { + r.firstDD = false + } else { + out(w, dd2Tag) + } + } else { + out(w, ".IP \\(bu 2\n") + } + } else { + out(w, "\n") + } +} + +func (r *roffRenderer) handleTable(w io.Writer, node *blackfriday.Node, entering bool) { + if entering { + out(w, tableStart) + // call walker to count cells (and rows?) so format section can be produced + columns := countColumns(node) + out(w, strings.Repeat("l ", columns)+"\n") + out(w, strings.Repeat("l ", columns)+".\n") + } else { + out(w, tableEnd) + } +} + +func (r *roffRenderer) handleTableCell(w io.Writer, node *blackfriday.Node, entering bool) { + if entering { + var start string + if node.Prev != nil && node.Prev.Type == blackfriday.TableCell { + start = "\t" + } + if node.IsHeader { + start += codespanTag + } else if nodeLiteralSize(node) > 30 { + start += tableCellStart + } + out(w, start) + } else { + var end string + if node.IsHeader { + end = codespanCloseTag + } else if nodeLiteralSize(node) > 30 { + end = tableCellEnd + } + if node.Next == nil && end != tableCellEnd { + // Last cell: need to carriage return if we are at the end of the + // header row and content isn't wrapped in a "tablecell" + end += crTag + } + out(w, end) + } +} + +func nodeLiteralSize(node *blackfriday.Node) int { + total := 0 + for n := node.FirstChild; n != nil; n = n.FirstChild { + total += len(n.Literal) + } + return total +} + +// because roff format requires knowing the column count before outputting any table +// data we need to walk a table tree and count the columns +func countColumns(node *blackfriday.Node) int { + var columns int + + node.Walk(func(node *blackfriday.Node, entering bool) blackfriday.WalkStatus { + switch node.Type { + case blackfriday.TableRow: + if !entering { + return blackfriday.Terminate + } + case blackfriday.TableCell: + if entering { + columns++ + } + default: + } + return blackfriday.GoToNext + }) + return columns +} + +func out(w io.Writer, output string) { + io.WriteString(w, output) // nolint: errcheck +} + +func escapeSpecialChars(w io.Writer, text []byte) { + for i := 0; i < len(text); i++ { + // escape initial apostrophe or period + if len(text) >= 1 && (text[0] == '\'' || text[0] == '.') { + out(w, "\\&") + } + + // directly copy normal characters + org := i + + for i < len(text) && text[i] != '\\' { + i++ + } + if i > org { + w.Write(text[org:i]) // nolint: errcheck + } + + // escape a character + if i >= len(text) { + break + } + + w.Write([]byte{'\\', text[i]}) // nolint: errcheck + } +} diff --git a/vendor/github.com/inconshreveable/mousetrap/LICENSE b/vendor/github.com/inconshreveable/mousetrap/LICENSE index 5f0d1fb6a..5f920e973 100644 --- a/vendor/github.com/inconshreveable/mousetrap/LICENSE +++ b/vendor/github.com/inconshreveable/mousetrap/LICENSE @@ -1,13 +1,201 @@ -Copyright 2014 Alan Shreve + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ -Licensed under the Apache License, Version 2.0 (the "License"); -you may not use this file except in compliance with the License. -You may obtain a copy of the License at + TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION - http://www.apache.org/licenses/LICENSE-2.0 + 1. 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We also recommend that a + file or class name and description of purpose be included on the + same "printed page" as the copyright notice for easier + identification within third-party archives. + + Copyright 2022 Alan Shreve (@inconshreveable) + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. diff --git a/vendor/github.com/inconshreveable/mousetrap/go.mod b/vendor/github.com/inconshreveable/mousetrap/go.mod new file mode 100644 index 000000000..6a24ed17e --- /dev/null +++ b/vendor/github.com/inconshreveable/mousetrap/go.mod @@ -0,0 +1,3 @@ +module github.com/inconshreveable/mousetrap + +go 1.18 diff --git a/vendor/github.com/russross/blackfriday/v2/.gitignore b/vendor/github.com/russross/blackfriday/v2/.gitignore new file mode 100644 index 000000000..75623dccc --- /dev/null +++ b/vendor/github.com/russross/blackfriday/v2/.gitignore @@ -0,0 +1,8 @@ +*.out +*.swp +*.8 +*.6 +_obj +_test* +markdown +tags diff --git a/vendor/github.com/russross/blackfriday/v2/.travis.yml b/vendor/github.com/russross/blackfriday/v2/.travis.yml new file mode 100644 index 000000000..b0b525a5a --- /dev/null +++ b/vendor/github.com/russross/blackfriday/v2/.travis.yml @@ -0,0 +1,17 @@ +sudo: false +language: go +go: + - "1.10.x" + - "1.11.x" + - tip +matrix: + fast_finish: true + allow_failures: + - go: tip +install: + - # Do nothing. This is needed to prevent default install action "go get -t -v ./..." from happening here (we want it to happen inside script step). +script: + - go get -t -v ./... + - diff -u <(echo -n) <(gofmt -d -s .) + - go tool vet . + - go test -v ./... diff --git a/vendor/github.com/russross/blackfriday/v2/LICENSE.txt b/vendor/github.com/russross/blackfriday/v2/LICENSE.txt new file mode 100644 index 000000000..2885af360 --- /dev/null +++ b/vendor/github.com/russross/blackfriday/v2/LICENSE.txt @@ -0,0 +1,29 @@ +Blackfriday is distributed under the Simplified BSD License: + +> Copyright © 2011 Russ Ross +> All rights reserved. +> +> Redistribution and use in source and binary forms, with or without +> modification, are permitted provided that the following conditions +> are met: +> +> 1. Redistributions of source code must retain the above copyright +> notice, this list of conditions and the following disclaimer. +> +> 2. Redistributions in binary form must reproduce the above +> copyright notice, this list of conditions and the following +> disclaimer in the documentation and/or other materials provided with +> the distribution. +> +> THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +> "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +> LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS +> FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +> COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +> INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, +> BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; +> LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER +> CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +> LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN +> ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +> POSSIBILITY OF SUCH DAMAGE. diff --git a/vendor/github.com/russross/blackfriday/v2/README.md b/vendor/github.com/russross/blackfriday/v2/README.md new file mode 100644 index 000000000..d9c08a22f --- /dev/null +++ b/vendor/github.com/russross/blackfriday/v2/README.md @@ -0,0 +1,335 @@ +Blackfriday +[![Build Status][BuildV2SVG]][BuildV2URL] +[![PkgGoDev][PkgGoDevV2SVG]][PkgGoDevV2URL] +=========== + +Blackfriday is a [Markdown][1] processor implemented in [Go][2]. It +is paranoid about its input (so you can safely feed it user-supplied +data), it is fast, it supports common extensions (tables, smart +punctuation substitutions, etc.), and it is safe for all utf-8 +(unicode) input. + +HTML output is currently supported, along with Smartypants +extensions. + +It started as a translation from C of [Sundown][3]. + + +Installation +------------ + +Blackfriday is compatible with modern Go releases in module mode. +With Go installed: + + go get github.com/russross/blackfriday/v2 + +will resolve and add the package to the current development module, +then build and install it. Alternatively, you can achieve the same +if you import it in a package: + + import "github.com/russross/blackfriday/v2" + +and `go get` without parameters. + +Legacy GOPATH mode is unsupported. + + +Versions +-------- + +Currently maintained and recommended version of Blackfriday is `v2`. It's being +developed on its own branch: https://github.com/russross/blackfriday/tree/v2 and the +documentation is available at +https://pkg.go.dev/github.com/russross/blackfriday/v2. + +It is `go get`-able in module mode at `github.com/russross/blackfriday/v2`. + +Version 2 offers a number of improvements over v1: + +* Cleaned up API +* A separate call to [`Parse`][4], which produces an abstract syntax tree for + the document +* Latest bug fixes +* Flexibility to easily add your own rendering extensions + +Potential drawbacks: + +* Our benchmarks show v2 to be slightly slower than v1. Currently in the + ballpark of around 15%. +* API breakage. If you can't afford modifying your code to adhere to the new API + and don't care too much about the new features, v2 is probably not for you. +* Several bug fixes are trailing behind and still need to be forward-ported to + v2. See issue [#348](https://github.com/russross/blackfriday/issues/348) for + tracking. + +If you are still interested in the legacy `v1`, you can import it from +`github.com/russross/blackfriday`. Documentation for the legacy v1 can be found +here: https://pkg.go.dev/github.com/russross/blackfriday. + + +Usage +----- + +For the most sensible markdown processing, it is as simple as getting your input +into a byte slice and calling: + +```go +output := blackfriday.Run(input) +``` + +Your input will be parsed and the output rendered with a set of most popular +extensions enabled. If you want the most basic feature set, corresponding with +the bare Markdown specification, use: + +```go +output := blackfriday.Run(input, blackfriday.WithNoExtensions()) +``` + +### Sanitize untrusted content + +Blackfriday itself does nothing to protect against malicious content. If you are +dealing with user-supplied markdown, we recommend running Blackfriday's output +through HTML sanitizer such as [Bluemonday][5]. + +Here's an example of simple usage of Blackfriday together with Bluemonday: + +```go +import ( + "github.com/microcosm-cc/bluemonday" + "github.com/russross/blackfriday/v2" +) + +// ... +unsafe := blackfriday.Run(input) +html := bluemonday.UGCPolicy().SanitizeBytes(unsafe) +``` + +### Custom options + +If you want to customize the set of options, use `blackfriday.WithExtensions`, +`blackfriday.WithRenderer` and `blackfriday.WithRefOverride`. + +### `blackfriday-tool` + +You can also check out `blackfriday-tool` for a more complete example +of how to use it. Download and install it using: + + go get github.com/russross/blackfriday-tool + +This is a simple command-line tool that allows you to process a +markdown file using a standalone program. You can also browse the +source directly on github if you are just looking for some example +code: + +* + +Note that if you have not already done so, installing +`blackfriday-tool` will be sufficient to download and install +blackfriday in addition to the tool itself. The tool binary will be +installed in `$GOPATH/bin`. This is a statically-linked binary that +can be copied to wherever you need it without worrying about +dependencies and library versions. + +### Sanitized anchor names + +Blackfriday includes an algorithm for creating sanitized anchor names +corresponding to a given input text. This algorithm is used to create +anchors for headings when `AutoHeadingIDs` extension is enabled. The +algorithm has a specification, so that other packages can create +compatible anchor names and links to those anchors. + +The specification is located at https://pkg.go.dev/github.com/russross/blackfriday/v2#hdr-Sanitized_Anchor_Names. + +[`SanitizedAnchorName`](https://pkg.go.dev/github.com/russross/blackfriday/v2#SanitizedAnchorName) exposes this functionality, and can be used to +create compatible links to the anchor names generated by blackfriday. +This algorithm is also implemented in a small standalone package at +[`github.com/shurcooL/sanitized_anchor_name`](https://pkg.go.dev/github.com/shurcooL/sanitized_anchor_name). It can be useful for clients +that want a small package and don't need full functionality of blackfriday. + + +Features +-------- + +All features of Sundown are supported, including: + +* **Compatibility**. The Markdown v1.0.3 test suite passes with + the `--tidy` option. Without `--tidy`, the differences are + mostly in whitespace and entity escaping, where blackfriday is + more consistent and cleaner. + +* **Common extensions**, including table support, fenced code + blocks, autolinks, strikethroughs, non-strict emphasis, etc. + +* **Safety**. Blackfriday is paranoid when parsing, making it safe + to feed untrusted user input without fear of bad things + happening. The test suite stress tests this and there are no + known inputs that make it crash. If you find one, please let me + know and send me the input that does it. + + NOTE: "safety" in this context means *runtime safety only*. In order to + protect yourself against JavaScript injection in untrusted content, see + [this example](https://github.com/russross/blackfriday#sanitize-untrusted-content). + +* **Fast processing**. It is fast enough to render on-demand in + most web applications without having to cache the output. + +* **Thread safety**. You can run multiple parsers in different + goroutines without ill effect. There is no dependence on global + shared state. + +* **Minimal dependencies**. Blackfriday only depends on standard + library packages in Go. The source code is pretty + self-contained, so it is easy to add to any project, including + Google App Engine projects. + +* **Standards compliant**. Output successfully validates using the + W3C validation tool for HTML 4.01 and XHTML 1.0 Transitional. + + +Extensions +---------- + +In addition to the standard markdown syntax, this package +implements the following extensions: + +* **Intra-word emphasis supression**. The `_` character is + commonly used inside words when discussing code, so having + markdown interpret it as an emphasis command is usually the + wrong thing. Blackfriday lets you treat all emphasis markers as + normal characters when they occur inside a word. + +* **Tables**. Tables can be created by drawing them in the input + using a simple syntax: + + ``` + Name | Age + --------|------ + Bob | 27 + Alice | 23 + ``` + +* **Fenced code blocks**. In addition to the normal 4-space + indentation to mark code blocks, you can explicitly mark them + and supply a language (to make syntax highlighting simple). Just + mark it like this: + + ```go + func getTrue() bool { + return true + } + ``` + + You can use 3 or more backticks to mark the beginning of the + block, and the same number to mark the end of the block. + + To preserve classes of fenced code blocks while using the bluemonday + HTML sanitizer, use the following policy: + + ```go + p := bluemonday.UGCPolicy() + p.AllowAttrs("class").Matching(regexp.MustCompile("^language-[a-zA-Z0-9]+$")).OnElements("code") + html := p.SanitizeBytes(unsafe) + ``` + +* **Definition lists**. A simple definition list is made of a single-line + term followed by a colon and the definition for that term. + + Cat + : Fluffy animal everyone likes + + Internet + : Vector of transmission for pictures of cats + + Terms must be separated from the previous definition by a blank line. + +* **Footnotes**. A marker in the text that will become a superscript number; + a footnote definition that will be placed in a list of footnotes at the + end of the document. A footnote looks like this: + + This is a footnote.[^1] + + [^1]: the footnote text. + +* **Autolinking**. Blackfriday can find URLs that have not been + explicitly marked as links and turn them into links. + +* **Strikethrough**. Use two tildes (`~~`) to mark text that + should be crossed out. + +* **Hard line breaks**. With this extension enabled newlines in the input + translate into line breaks in the output. This extension is off by default. + +* **Smart quotes**. Smartypants-style punctuation substitution is + supported, turning normal double- and single-quote marks into + curly quotes, etc. + +* **LaTeX-style dash parsing** is an additional option, where `--` + is translated into `–`, and `---` is translated into + `—`. This differs from most smartypants processors, which + turn a single hyphen into an ndash and a double hyphen into an + mdash. + +* **Smart fractions**, where anything that looks like a fraction + is translated into suitable HTML (instead of just a few special + cases like most smartypant processors). For example, `4/5` + becomes `4⁄5`, which renders as + 4⁄5. + + +Other renderers +--------------- + +Blackfriday is structured to allow alternative rendering engines. Here +are a few of note: + +* [github_flavored_markdown](https://pkg.go.dev/github.com/shurcooL/github_flavored_markdown): + provides a GitHub Flavored Markdown renderer with fenced code block + highlighting, clickable heading anchor links. + + It's not customizable, and its goal is to produce HTML output + equivalent to the [GitHub Markdown API endpoint](https://developer.github.com/v3/markdown/#render-a-markdown-document-in-raw-mode), + except the rendering is performed locally. + +* [markdownfmt](https://github.com/shurcooL/markdownfmt): like gofmt, + but for markdown. + +* [LaTeX output](https://gitlab.com/ambrevar/blackfriday-latex): + renders output as LaTeX. + +* [bfchroma](https://github.com/Depado/bfchroma/): provides convenience + integration with the [Chroma](https://github.com/alecthomas/chroma) code + highlighting library. bfchroma is only compatible with v2 of Blackfriday and + provides a drop-in renderer ready to use with Blackfriday, as well as + options and means for further customization. + +* [Blackfriday-Confluence](https://github.com/kentaro-m/blackfriday-confluence): provides a [Confluence Wiki Markup](https://confluence.atlassian.com/doc/confluence-wiki-markup-251003035.html) renderer. + +* [Blackfriday-Slack](https://github.com/karriereat/blackfriday-slack): converts markdown to slack message style + + +TODO +---- + +* More unit testing +* Improve Unicode support. It does not understand all Unicode + rules (about what constitutes a letter, a punctuation symbol, + etc.), so it may fail to detect word boundaries correctly in + some instances. It is safe on all UTF-8 input. + + +License +------- + +[Blackfriday is distributed under the Simplified BSD License](LICENSE.txt) + + + [1]: https://daringfireball.net/projects/markdown/ "Markdown" + [2]: https://golang.org/ "Go Language" + [3]: https://github.com/vmg/sundown "Sundown" + [4]: https://pkg.go.dev/github.com/russross/blackfriday/v2#Parse "Parse func" + [5]: https://github.com/microcosm-cc/bluemonday "Bluemonday" + + [BuildV2SVG]: https://travis-ci.org/russross/blackfriday.svg?branch=v2 + [BuildV2URL]: https://travis-ci.org/russross/blackfriday + [PkgGoDevV2SVG]: https://pkg.go.dev/badge/github.com/russross/blackfriday/v2 + [PkgGoDevV2URL]: https://pkg.go.dev/github.com/russross/blackfriday/v2 diff --git a/vendor/github.com/russross/blackfriday/v2/block.go b/vendor/github.com/russross/blackfriday/v2/block.go new file mode 100644 index 000000000..dcd61e6e3 --- /dev/null +++ b/vendor/github.com/russross/blackfriday/v2/block.go @@ -0,0 +1,1612 @@ +// +// Blackfriday Markdown Processor +// Available at http://github.com/russross/blackfriday +// +// Copyright © 2011 Russ Ross . +// Distributed under the Simplified BSD License. +// See README.md for details. +// + +// +// Functions to parse block-level elements. +// + +package blackfriday + +import ( + "bytes" + "html" + "regexp" + "strings" + "unicode" +) + +const ( + charEntity = "&(?:#x[a-f0-9]{1,8}|#[0-9]{1,8}|[a-z][a-z0-9]{1,31});" + escapable = "[!\"#$%&'()*+,./:;<=>?@[\\\\\\]^_`{|}~-]" +) + +var ( + reBackslashOrAmp = regexp.MustCompile("[\\&]") + reEntityOrEscapedChar = regexp.MustCompile("(?i)\\\\" + escapable + "|" + charEntity) +) + +// Parse block-level data. +// Note: this function and many that it calls assume that +// the input buffer ends with a newline. +func (p *Markdown) block(data []byte) { + // this is called recursively: enforce a maximum depth + if p.nesting >= p.maxNesting { + return + } + p.nesting++ + + // parse out one block-level construct at a time + for len(data) > 0 { + // prefixed heading: + // + // # Heading 1 + // ## Heading 2 + // ... + // ###### Heading 6 + if p.isPrefixHeading(data) { + data = data[p.prefixHeading(data):] + continue + } + + // block of preformatted HTML: + // + //
+ // ... + //
+ if data[0] == '<' { + if i := p.html(data, true); i > 0 { + data = data[i:] + continue + } + } + + // title block + // + // % stuff + // % more stuff + // % even more stuff + if p.extensions&Titleblock != 0 { + if data[0] == '%' { + if i := p.titleBlock(data, true); i > 0 { + data = data[i:] + continue + } + } + } + + // blank lines. note: returns the # of bytes to skip + if i := p.isEmpty(data); i > 0 { + data = data[i:] + continue + } + + // indented code block: + // + // func max(a, b int) int { + // if a > b { + // return a + // } + // return b + // } + if p.codePrefix(data) > 0 { + data = data[p.code(data):] + continue + } + + // fenced code block: + // + // ``` go + // func fact(n int) int { + // if n <= 1 { + // return n + // } + // return n * fact(n-1) + // } + // ``` + if p.extensions&FencedCode != 0 { + if i := p.fencedCodeBlock(data, true); i > 0 { + data = data[i:] + continue + } + } + + // horizontal rule: + // + // ------ + // or + // ****** + // or + // ______ + if p.isHRule(data) { + p.addBlock(HorizontalRule, nil) + var i int + for i = 0; i < len(data) && data[i] != '\n'; i++ { + } + data = data[i:] + continue + } + + // block quote: + // + // > A big quote I found somewhere + // > on the web + if p.quotePrefix(data) > 0 { + data = data[p.quote(data):] + continue + } + + // table: + // + // Name | Age | Phone + // ------|-----|--------- + // Bob | 31 | 555-1234 + // Alice | 27 | 555-4321 + if p.extensions&Tables != 0 { + if i := p.table(data); i > 0 { + data = data[i:] + continue + } + } + + // an itemized/unordered list: + // + // * Item 1 + // * Item 2 + // + // also works with + or - + if p.uliPrefix(data) > 0 { + data = data[p.list(data, 0):] + continue + } + + // a numbered/ordered list: + // + // 1. Item 1 + // 2. Item 2 + if p.oliPrefix(data) > 0 { + data = data[p.list(data, ListTypeOrdered):] + continue + } + + // definition lists: + // + // Term 1 + // : Definition a + // : Definition b + // + // Term 2 + // : Definition c + if p.extensions&DefinitionLists != 0 { + if p.dliPrefix(data) > 0 { + data = data[p.list(data, ListTypeDefinition):] + continue + } + } + + // anything else must look like a normal paragraph + // note: this finds underlined headings, too + data = data[p.paragraph(data):] + } + + p.nesting-- +} + +func (p *Markdown) addBlock(typ NodeType, content []byte) *Node { + p.closeUnmatchedBlocks() + container := p.addChild(typ, 0) + container.content = content + return container +} + +func (p *Markdown) isPrefixHeading(data []byte) bool { + if data[0] != '#' { + return false + } + + if p.extensions&SpaceHeadings != 0 { + level := 0 + for level < 6 && level < len(data) && data[level] == '#' { + level++ + } + if level == len(data) || data[level] != ' ' { + return false + } + } + return true +} + +func (p *Markdown) prefixHeading(data []byte) int { + level := 0 + for level < 6 && level < len(data) && data[level] == '#' { + level++ + } + i := skipChar(data, level, ' ') + end := skipUntilChar(data, i, '\n') + skip := end + id := "" + if p.extensions&HeadingIDs != 0 { + j, k := 0, 0 + // find start/end of heading id + for j = i; j < end-1 && (data[j] != '{' || data[j+1] != '#'); j++ { + } + for k = j + 1; k < end && data[k] != '}'; k++ { + } + // extract heading id iff found + if j < end && k < end { + id = string(data[j+2 : k]) + end = j + skip = k + 1 + for end > 0 && data[end-1] == ' ' { + end-- + } + } + } + for end > 0 && data[end-1] == '#' { + if isBackslashEscaped(data, end-1) { + break + } + end-- + } + for end > 0 && data[end-1] == ' ' { + end-- + } + if end > i { + if id == "" && p.extensions&AutoHeadingIDs != 0 { + id = SanitizedAnchorName(string(data[i:end])) + } + block := p.addBlock(Heading, data[i:end]) + block.HeadingID = id + block.Level = level + } + return skip +} + +func (p *Markdown) isUnderlinedHeading(data []byte) int { + // test of level 1 heading + if data[0] == '=' { + i := skipChar(data, 1, '=') + i = skipChar(data, i, ' ') + if i < len(data) && data[i] == '\n' { + return 1 + } + return 0 + } + + // test of level 2 heading + if data[0] == '-' { + i := skipChar(data, 1, '-') + i = skipChar(data, i, ' ') + if i < len(data) && data[i] == '\n' { + return 2 + } + return 0 + } + + return 0 +} + +func (p *Markdown) titleBlock(data []byte, doRender bool) int { + if data[0] != '%' { + return 0 + } + splitData := bytes.Split(data, []byte("\n")) + var i int + for idx, b := range splitData { + if !bytes.HasPrefix(b, []byte("%")) { + i = idx // - 1 + break + } + } + + data = bytes.Join(splitData[0:i], []byte("\n")) + consumed := len(data) + data = bytes.TrimPrefix(data, []byte("% ")) + data = bytes.Replace(data, []byte("\n% "), []byte("\n"), -1) + block := p.addBlock(Heading, data) + block.Level = 1 + block.IsTitleblock = true + + return consumed +} + +func (p *Markdown) html(data []byte, doRender bool) int { + var i, j int + + // identify the opening tag + if data[0] != '<' { + return 0 + } + curtag, tagfound := p.htmlFindTag(data[1:]) + + // handle special cases + if !tagfound { + // check for an HTML comment + if size := p.htmlComment(data, doRender); size > 0 { + return size + } + + // check for an
tag + if size := p.htmlHr(data, doRender); size > 0 { + return size + } + + // no special case recognized + return 0 + } + + // look for an unindented matching closing tag + // followed by a blank line + found := false + /* + closetag := []byte("\n") + j = len(curtag) + 1 + for !found { + // scan for a closing tag at the beginning of a line + if skip := bytes.Index(data[j:], closetag); skip >= 0 { + j += skip + len(closetag) + } else { + break + } + + // see if it is the only thing on the line + if skip := p.isEmpty(data[j:]); skip > 0 { + // see if it is followed by a blank line/eof + j += skip + if j >= len(data) { + found = true + i = j + } else { + if skip := p.isEmpty(data[j:]); skip > 0 { + j += skip + found = true + i = j + } + } + } + } + */ + + // if not found, try a second pass looking for indented match + // but not if tag is "ins" or "del" (following original Markdown.pl) + if !found && curtag != "ins" && curtag != "del" { + i = 1 + for i < len(data) { + i++ + for i < len(data) && !(data[i-1] == '<' && data[i] == '/') { + i++ + } + + if i+2+len(curtag) >= len(data) { + break + } + + j = p.htmlFindEnd(curtag, data[i-1:]) + + if j > 0 { + i += j - 1 + found = true + break + } + } + } + + if !found { + return 0 + } + + // the end of the block has been found + if doRender { + // trim newlines + end := i + for end > 0 && data[end-1] == '\n' { + end-- + } + finalizeHTMLBlock(p.addBlock(HTMLBlock, data[:end])) + } + + return i +} + +func finalizeHTMLBlock(block *Node) { + block.Literal = block.content + block.content = nil +} + +// HTML comment, lax form +func (p *Markdown) htmlComment(data []byte, doRender bool) int { + i := p.inlineHTMLComment(data) + // needs to end with a blank line + if j := p.isEmpty(data[i:]); j > 0 { + size := i + j + if doRender { + // trim trailing newlines + end := size + for end > 0 && data[end-1] == '\n' { + end-- + } + block := p.addBlock(HTMLBlock, data[:end]) + finalizeHTMLBlock(block) + } + return size + } + return 0 +} + +// HR, which is the only self-closing block tag considered +func (p *Markdown) htmlHr(data []byte, doRender bool) int { + if len(data) < 4 { + return 0 + } + if data[0] != '<' || (data[1] != 'h' && data[1] != 'H') || (data[2] != 'r' && data[2] != 'R') { + return 0 + } + if data[3] != ' ' && data[3] != '/' && data[3] != '>' { + // not an
tag after all; at least not a valid one + return 0 + } + i := 3 + for i < len(data) && data[i] != '>' && data[i] != '\n' { + i++ + } + if i < len(data) && data[i] == '>' { + i++ + if j := p.isEmpty(data[i:]); j > 0 { + size := i + j + if doRender { + // trim newlines + end := size + for end > 0 && data[end-1] == '\n' { + end-- + } + finalizeHTMLBlock(p.addBlock(HTMLBlock, data[:end])) + } + return size + } + } + return 0 +} + +func (p *Markdown) htmlFindTag(data []byte) (string, bool) { + i := 0 + for i < len(data) && isalnum(data[i]) { + i++ + } + key := string(data[:i]) + if _, ok := blockTags[key]; ok { + return key, true + } + return "", false +} + +func (p *Markdown) htmlFindEnd(tag string, data []byte) int { + // assume data[0] == '<' && data[1] == '/' already tested + if tag == "hr" { + return 2 + } + // check if tag is a match + closetag := []byte("") + if !bytes.HasPrefix(data, closetag) { + return 0 + } + i := len(closetag) + + // check that the rest of the line is blank + skip := 0 + if skip = p.isEmpty(data[i:]); skip == 0 { + return 0 + } + i += skip + skip = 0 + + if i >= len(data) { + return i + } + + if p.extensions&LaxHTMLBlocks != 0 { + return i + } + if skip = p.isEmpty(data[i:]); skip == 0 { + // following line must be blank + return 0 + } + + return i + skip +} + +func (*Markdown) isEmpty(data []byte) int { + // it is okay to call isEmpty on an empty buffer + if len(data) == 0 { + return 0 + } + + var i int + for i = 0; i < len(data) && data[i] != '\n'; i++ { + if data[i] != ' ' && data[i] != '\t' { + return 0 + } + } + if i < len(data) && data[i] == '\n' { + i++ + } + return i +} + +func (*Markdown) isHRule(data []byte) bool { + i := 0 + + // skip up to three spaces + for i < 3 && data[i] == ' ' { + i++ + } + + // look at the hrule char + if data[i] != '*' && data[i] != '-' && data[i] != '_' { + return false + } + c := data[i] + + // the whole line must be the char or whitespace + n := 0 + for i < len(data) && data[i] != '\n' { + switch { + case data[i] == c: + n++ + case data[i] != ' ': + return false + } + i++ + } + + return n >= 3 +} + +// isFenceLine checks if there's a fence line (e.g., ``` or ``` go) at the beginning of data, +// and returns the end index if so, or 0 otherwise. It also returns the marker found. +// If info is not nil, it gets set to the syntax specified in the fence line. +func isFenceLine(data []byte, info *string, oldmarker string) (end int, marker string) { + i, size := 0, 0 + + // skip up to three spaces + for i < len(data) && i < 3 && data[i] == ' ' { + i++ + } + + // check for the marker characters: ~ or ` + if i >= len(data) { + return 0, "" + } + if data[i] != '~' && data[i] != '`' { + return 0, "" + } + + c := data[i] + + // the whole line must be the same char or whitespace + for i < len(data) && data[i] == c { + size++ + i++ + } + + // the marker char must occur at least 3 times + if size < 3 { + return 0, "" + } + marker = string(data[i-size : i]) + + // if this is the end marker, it must match the beginning marker + if oldmarker != "" && marker != oldmarker { + return 0, "" + } + + // TODO(shurcooL): It's probably a good idea to simplify the 2 code paths here + // into one, always get the info string, and discard it if the caller doesn't care. + if info != nil { + infoLength := 0 + i = skipChar(data, i, ' ') + + if i >= len(data) { + if i == len(data) { + return i, marker + } + return 0, "" + } + + infoStart := i + + if data[i] == '{' { + i++ + infoStart++ + + for i < len(data) && data[i] != '}' && data[i] != '\n' { + infoLength++ + i++ + } + + if i >= len(data) || data[i] != '}' { + return 0, "" + } + + // strip all whitespace at the beginning and the end + // of the {} block + for infoLength > 0 && isspace(data[infoStart]) { + infoStart++ + infoLength-- + } + + for infoLength > 0 && isspace(data[infoStart+infoLength-1]) { + infoLength-- + } + i++ + i = skipChar(data, i, ' ') + } else { + for i < len(data) && !isverticalspace(data[i]) { + infoLength++ + i++ + } + } + + *info = strings.TrimSpace(string(data[infoStart : infoStart+infoLength])) + } + + if i == len(data) { + return i, marker + } + if i > len(data) || data[i] != '\n' { + return 0, "" + } + return i + 1, marker // Take newline into account. +} + +// fencedCodeBlock returns the end index if data contains a fenced code block at the beginning, +// or 0 otherwise. It writes to out if doRender is true, otherwise it has no side effects. +// If doRender is true, a final newline is mandatory to recognize the fenced code block. +func (p *Markdown) fencedCodeBlock(data []byte, doRender bool) int { + var info string + beg, marker := isFenceLine(data, &info, "") + if beg == 0 || beg >= len(data) { + return 0 + } + fenceLength := beg - 1 + + var work bytes.Buffer + work.Write([]byte(info)) + work.WriteByte('\n') + + for { + // safe to assume beg < len(data) + + // check for the end of the code block + fenceEnd, _ := isFenceLine(data[beg:], nil, marker) + if fenceEnd != 0 { + beg += fenceEnd + break + } + + // copy the current line + end := skipUntilChar(data, beg, '\n') + 1 + + // did we reach the end of the buffer without a closing marker? + if end >= len(data) { + return 0 + } + + // verbatim copy to the working buffer + if doRender { + work.Write(data[beg:end]) + } + beg = end + } + + if doRender { + block := p.addBlock(CodeBlock, work.Bytes()) // TODO: get rid of temp buffer + block.IsFenced = true + block.FenceLength = fenceLength + finalizeCodeBlock(block) + } + + return beg +} + +func unescapeChar(str []byte) []byte { + if str[0] == '\\' { + return []byte{str[1]} + } + return []byte(html.UnescapeString(string(str))) +} + +func unescapeString(str []byte) []byte { + if reBackslashOrAmp.Match(str) { + return reEntityOrEscapedChar.ReplaceAllFunc(str, unescapeChar) + } + return str +} + +func finalizeCodeBlock(block *Node) { + if block.IsFenced { + newlinePos := bytes.IndexByte(block.content, '\n') + firstLine := block.content[:newlinePos] + rest := block.content[newlinePos+1:] + block.Info = unescapeString(bytes.Trim(firstLine, "\n")) + block.Literal = rest + } else { + block.Literal = block.content + } + block.content = nil +} + +func (p *Markdown) table(data []byte) int { + table := p.addBlock(Table, nil) + i, columns := p.tableHeader(data) + if i == 0 { + p.tip = table.Parent + table.Unlink() + return 0 + } + + p.addBlock(TableBody, nil) + + for i < len(data) { + pipes, rowStart := 0, i + for ; i < len(data) && data[i] != '\n'; i++ { + if data[i] == '|' { + pipes++ + } + } + + if pipes == 0 { + i = rowStart + break + } + + // include the newline in data sent to tableRow + if i < len(data) && data[i] == '\n' { + i++ + } + p.tableRow(data[rowStart:i], columns, false) + } + + return i +} + +// check if the specified position is preceded by an odd number of backslashes +func isBackslashEscaped(data []byte, i int) bool { + backslashes := 0 + for i-backslashes-1 >= 0 && data[i-backslashes-1] == '\\' { + backslashes++ + } + return backslashes&1 == 1 +} + +func (p *Markdown) tableHeader(data []byte) (size int, columns []CellAlignFlags) { + i := 0 + colCount := 1 + for i = 0; i < len(data) && data[i] != '\n'; i++ { + if data[i] == '|' && !isBackslashEscaped(data, i) { + colCount++ + } + } + + // doesn't look like a table header + if colCount == 1 { + return + } + + // include the newline in the data sent to tableRow + j := i + if j < len(data) && data[j] == '\n' { + j++ + } + header := data[:j] + + // column count ignores pipes at beginning or end of line + if data[0] == '|' { + colCount-- + } + if i > 2 && data[i-1] == '|' && !isBackslashEscaped(data, i-1) { + colCount-- + } + + columns = make([]CellAlignFlags, colCount) + + // move on to the header underline + i++ + if i >= len(data) { + return + } + + if data[i] == '|' && !isBackslashEscaped(data, i) { + i++ + } + i = skipChar(data, i, ' ') + + // each column header is of form: / *:?-+:? *|/ with # dashes + # colons >= 3 + // and trailing | optional on last column + col := 0 + for i < len(data) && data[i] != '\n' { + dashes := 0 + + if data[i] == ':' { + i++ + columns[col] |= TableAlignmentLeft + dashes++ + } + for i < len(data) && data[i] == '-' { + i++ + dashes++ + } + if i < len(data) && data[i] == ':' { + i++ + columns[col] |= TableAlignmentRight + dashes++ + } + for i < len(data) && data[i] == ' ' { + i++ + } + if i == len(data) { + return + } + // end of column test is messy + switch { + case dashes < 3: + // not a valid column + return + + case data[i] == '|' && !isBackslashEscaped(data, i): + // marker found, now skip past trailing whitespace + col++ + i++ + for i < len(data) && data[i] == ' ' { + i++ + } + + // trailing junk found after last column + if col >= colCount && i < len(data) && data[i] != '\n' { + return + } + + case (data[i] != '|' || isBackslashEscaped(data, i)) && col+1 < colCount: + // something else found where marker was required + return + + case data[i] == '\n': + // marker is optional for the last column + col++ + + default: + // trailing junk found after last column + return + } + } + if col != colCount { + return + } + + p.addBlock(TableHead, nil) + p.tableRow(header, columns, true) + size = i + if size < len(data) && data[size] == '\n' { + size++ + } + return +} + +func (p *Markdown) tableRow(data []byte, columns []CellAlignFlags, header bool) { + p.addBlock(TableRow, nil) + i, col := 0, 0 + + if data[i] == '|' && !isBackslashEscaped(data, i) { + i++ + } + + for col = 0; col < len(columns) && i < len(data); col++ { + for i < len(data) && data[i] == ' ' { + i++ + } + + cellStart := i + + for i < len(data) && (data[i] != '|' || isBackslashEscaped(data, i)) && data[i] != '\n' { + i++ + } + + cellEnd := i + + // skip the end-of-cell marker, possibly taking us past end of buffer + i++ + + for cellEnd > cellStart && cellEnd-1 < len(data) && data[cellEnd-1] == ' ' { + cellEnd-- + } + + cell := p.addBlock(TableCell, data[cellStart:cellEnd]) + cell.IsHeader = header + cell.Align = columns[col] + } + + // pad it out with empty columns to get the right number + for ; col < len(columns); col++ { + cell := p.addBlock(TableCell, nil) + cell.IsHeader = header + cell.Align = columns[col] + } + + // silently ignore rows with too many cells +} + +// returns blockquote prefix length +func (p *Markdown) quotePrefix(data []byte) int { + i := 0 + for i < 3 && i < len(data) && data[i] == ' ' { + i++ + } + if i < len(data) && data[i] == '>' { + if i+1 < len(data) && data[i+1] == ' ' { + return i + 2 + } + return i + 1 + } + return 0 +} + +// blockquote ends with at least one blank line +// followed by something without a blockquote prefix +func (p *Markdown) terminateBlockquote(data []byte, beg, end int) bool { + if p.isEmpty(data[beg:]) <= 0 { + return false + } + if end >= len(data) { + return true + } + return p.quotePrefix(data[end:]) == 0 && p.isEmpty(data[end:]) == 0 +} + +// parse a blockquote fragment +func (p *Markdown) quote(data []byte) int { + block := p.addBlock(BlockQuote, nil) + var raw bytes.Buffer + beg, end := 0, 0 + for beg < len(data) { + end = beg + // Step over whole lines, collecting them. While doing that, check for + // fenced code and if one's found, incorporate it altogether, + // irregardless of any contents inside it + for end < len(data) && data[end] != '\n' { + if p.extensions&FencedCode != 0 { + if i := p.fencedCodeBlock(data[end:], false); i > 0 { + // -1 to compensate for the extra end++ after the loop: + end += i - 1 + break + } + } + end++ + } + if end < len(data) && data[end] == '\n' { + end++ + } + if pre := p.quotePrefix(data[beg:]); pre > 0 { + // skip the prefix + beg += pre + } else if p.terminateBlockquote(data, beg, end) { + break + } + // this line is part of the blockquote + raw.Write(data[beg:end]) + beg = end + } + p.block(raw.Bytes()) + p.finalize(block) + return end +} + +// returns prefix length for block code +func (p *Markdown) codePrefix(data []byte) int { + if len(data) >= 1 && data[0] == '\t' { + return 1 + } + if len(data) >= 4 && data[0] == ' ' && data[1] == ' ' && data[2] == ' ' && data[3] == ' ' { + return 4 + } + return 0 +} + +func (p *Markdown) code(data []byte) int { + var work bytes.Buffer + + i := 0 + for i < len(data) { + beg := i + for i < len(data) && data[i] != '\n' { + i++ + } + if i < len(data) && data[i] == '\n' { + i++ + } + + blankline := p.isEmpty(data[beg:i]) > 0 + if pre := p.codePrefix(data[beg:i]); pre > 0 { + beg += pre + } else if !blankline { + // non-empty, non-prefixed line breaks the pre + i = beg + break + } + + // verbatim copy to the working buffer + if blankline { + work.WriteByte('\n') + } else { + work.Write(data[beg:i]) + } + } + + // trim all the \n off the end of work + workbytes := work.Bytes() + eol := len(workbytes) + for eol > 0 && workbytes[eol-1] == '\n' { + eol-- + } + if eol != len(workbytes) { + work.Truncate(eol) + } + + work.WriteByte('\n') + + block := p.addBlock(CodeBlock, work.Bytes()) // TODO: get rid of temp buffer + block.IsFenced = false + finalizeCodeBlock(block) + + return i +} + +// returns unordered list item prefix +func (p *Markdown) uliPrefix(data []byte) int { + i := 0 + // start with up to 3 spaces + for i < len(data) && i < 3 && data[i] == ' ' { + i++ + } + if i >= len(data)-1 { + return 0 + } + // need one of {'*', '+', '-'} followed by a space or a tab + if (data[i] != '*' && data[i] != '+' && data[i] != '-') || + (data[i+1] != ' ' && data[i+1] != '\t') { + return 0 + } + return i + 2 +} + +// returns ordered list item prefix +func (p *Markdown) oliPrefix(data []byte) int { + i := 0 + + // start with up to 3 spaces + for i < 3 && i < len(data) && data[i] == ' ' { + i++ + } + + // count the digits + start := i + for i < len(data) && data[i] >= '0' && data[i] <= '9' { + i++ + } + if start == i || i >= len(data)-1 { + return 0 + } + + // we need >= 1 digits followed by a dot and a space or a tab + if data[i] != '.' || !(data[i+1] == ' ' || data[i+1] == '\t') { + return 0 + } + return i + 2 +} + +// returns definition list item prefix +func (p *Markdown) dliPrefix(data []byte) int { + if len(data) < 2 { + return 0 + } + i := 0 + // need a ':' followed by a space or a tab + if data[i] != ':' || !(data[i+1] == ' ' || data[i+1] == '\t') { + return 0 + } + for i < len(data) && data[i] == ' ' { + i++ + } + return i + 2 +} + +// parse ordered or unordered list block +func (p *Markdown) list(data []byte, flags ListType) int { + i := 0 + flags |= ListItemBeginningOfList + block := p.addBlock(List, nil) + block.ListFlags = flags + block.Tight = true + + for i < len(data) { + skip := p.listItem(data[i:], &flags) + if flags&ListItemContainsBlock != 0 { + block.ListData.Tight = false + } + i += skip + if skip == 0 || flags&ListItemEndOfList != 0 { + break + } + flags &= ^ListItemBeginningOfList + } + + above := block.Parent + finalizeList(block) + p.tip = above + return i +} + +// Returns true if the list item is not the same type as its parent list +func (p *Markdown) listTypeChanged(data []byte, flags *ListType) bool { + if p.dliPrefix(data) > 0 && *flags&ListTypeDefinition == 0 { + return true + } else if p.oliPrefix(data) > 0 && *flags&ListTypeOrdered == 0 { + return true + } else if p.uliPrefix(data) > 0 && (*flags&ListTypeOrdered != 0 || *flags&ListTypeDefinition != 0) { + return true + } + return false +} + +// Returns true if block ends with a blank line, descending if needed +// into lists and sublists. +func endsWithBlankLine(block *Node) bool { + // TODO: figure this out. Always false now. + for block != nil { + //if block.lastLineBlank { + //return true + //} + t := block.Type + if t == List || t == Item { + block = block.LastChild + } else { + break + } + } + return false +} + +func finalizeList(block *Node) { + block.open = false + item := block.FirstChild + for item != nil { + // check for non-final list item ending with blank line: + if endsWithBlankLine(item) && item.Next != nil { + block.ListData.Tight = false + break + } + // recurse into children of list item, to see if there are spaces + // between any of them: + subItem := item.FirstChild + for subItem != nil { + if endsWithBlankLine(subItem) && (item.Next != nil || subItem.Next != nil) { + block.ListData.Tight = false + break + } + subItem = subItem.Next + } + item = item.Next + } +} + +// Parse a single list item. +// Assumes initial prefix is already removed if this is a sublist. +func (p *Markdown) listItem(data []byte, flags *ListType) int { + // keep track of the indentation of the first line + itemIndent := 0 + if data[0] == '\t' { + itemIndent += 4 + } else { + for itemIndent < 3 && data[itemIndent] == ' ' { + itemIndent++ + } + } + + var bulletChar byte = '*' + i := p.uliPrefix(data) + if i == 0 { + i = p.oliPrefix(data) + } else { + bulletChar = data[i-2] + } + if i == 0 { + i = p.dliPrefix(data) + // reset definition term flag + if i > 0 { + *flags &= ^ListTypeTerm + } + } + if i == 0 { + // if in definition list, set term flag and continue + if *flags&ListTypeDefinition != 0 { + *flags |= ListTypeTerm + } else { + return 0 + } + } + + // skip leading whitespace on first line + for i < len(data) && data[i] == ' ' { + i++ + } + + // find the end of the line + line := i + for i > 0 && i < len(data) && data[i-1] != '\n' { + i++ + } + + // get working buffer + var raw bytes.Buffer + + // put the first line into the working buffer + raw.Write(data[line:i]) + line = i + + // process the following lines + containsBlankLine := false + sublist := 0 + codeBlockMarker := "" + +gatherlines: + for line < len(data) { + i++ + + // find the end of this line + for i < len(data) && data[i-1] != '\n' { + i++ + } + + // if it is an empty line, guess that it is part of this item + // and move on to the next line + if p.isEmpty(data[line:i]) > 0 { + containsBlankLine = true + line = i + continue + } + + // calculate the indentation + indent := 0 + indentIndex := 0 + if data[line] == '\t' { + indentIndex++ + indent += 4 + } else { + for indent < 4 && line+indent < i && data[line+indent] == ' ' { + indent++ + indentIndex++ + } + } + + chunk := data[line+indentIndex : i] + + if p.extensions&FencedCode != 0 { + // determine if in or out of codeblock + // if in codeblock, ignore normal list processing + _, marker := isFenceLine(chunk, nil, codeBlockMarker) + if marker != "" { + if codeBlockMarker == "" { + // start of codeblock + codeBlockMarker = marker + } else { + // end of codeblock. + codeBlockMarker = "" + } + } + // we are in a codeblock, write line, and continue + if codeBlockMarker != "" || marker != "" { + raw.Write(data[line+indentIndex : i]) + line = i + continue gatherlines + } + } + + // evaluate how this line fits in + switch { + // is this a nested list item? + case (p.uliPrefix(chunk) > 0 && !p.isHRule(chunk)) || + p.oliPrefix(chunk) > 0 || + p.dliPrefix(chunk) > 0: + + // to be a nested list, it must be indented more + // if not, it is either a different kind of list + // or the next item in the same list + if indent <= itemIndent { + if p.listTypeChanged(chunk, flags) { + *flags |= ListItemEndOfList + } else if containsBlankLine { + *flags |= ListItemContainsBlock + } + + break gatherlines + } + + if containsBlankLine { + *flags |= ListItemContainsBlock + } + + // is this the first item in the nested list? + if sublist == 0 { + sublist = raw.Len() + } + + // is this a nested prefix heading? + case p.isPrefixHeading(chunk): + // if the heading is not indented, it is not nested in the list + // and thus ends the list + if containsBlankLine && indent < 4 { + *flags |= ListItemEndOfList + break gatherlines + } + *flags |= ListItemContainsBlock + + // anything following an empty line is only part + // of this item if it is indented 4 spaces + // (regardless of the indentation of the beginning of the item) + case containsBlankLine && indent < 4: + if *flags&ListTypeDefinition != 0 && i < len(data)-1 { + // is the next item still a part of this list? + next := i + for next < len(data) && data[next] != '\n' { + next++ + } + for next < len(data)-1 && data[next] == '\n' { + next++ + } + if i < len(data)-1 && data[i] != ':' && data[next] != ':' { + *flags |= ListItemEndOfList + } + } else { + *flags |= ListItemEndOfList + } + break gatherlines + + // a blank line means this should be parsed as a block + case containsBlankLine: + raw.WriteByte('\n') + *flags |= ListItemContainsBlock + } + + // if this line was preceded by one or more blanks, + // re-introduce the blank into the buffer + if containsBlankLine { + containsBlankLine = false + raw.WriteByte('\n') + } + + // add the line into the working buffer without prefix + raw.Write(data[line+indentIndex : i]) + + line = i + } + + rawBytes := raw.Bytes() + + block := p.addBlock(Item, nil) + block.ListFlags = *flags + block.Tight = false + block.BulletChar = bulletChar + block.Delimiter = '.' // Only '.' is possible in Markdown, but ')' will also be possible in CommonMark + + // render the contents of the list item + if *flags&ListItemContainsBlock != 0 && *flags&ListTypeTerm == 0 { + // intermediate render of block item, except for definition term + if sublist > 0 { + p.block(rawBytes[:sublist]) + p.block(rawBytes[sublist:]) + } else { + p.block(rawBytes) + } + } else { + // intermediate render of inline item + if sublist > 0 { + child := p.addChild(Paragraph, 0) + child.content = rawBytes[:sublist] + p.block(rawBytes[sublist:]) + } else { + child := p.addChild(Paragraph, 0) + child.content = rawBytes + } + } + return line +} + +// render a single paragraph that has already been parsed out +func (p *Markdown) renderParagraph(data []byte) { + if len(data) == 0 { + return + } + + // trim leading spaces + beg := 0 + for data[beg] == ' ' { + beg++ + } + + end := len(data) + // trim trailing newline + if data[len(data)-1] == '\n' { + end-- + } + + // trim trailing spaces + for end > beg && data[end-1] == ' ' { + end-- + } + + p.addBlock(Paragraph, data[beg:end]) +} + +func (p *Markdown) paragraph(data []byte) int { + // prev: index of 1st char of previous line + // line: index of 1st char of current line + // i: index of cursor/end of current line + var prev, line, i int + tabSize := TabSizeDefault + if p.extensions&TabSizeEight != 0 { + tabSize = TabSizeDouble + } + // keep going until we find something to mark the end of the paragraph + for i < len(data) { + // mark the beginning of the current line + prev = line + current := data[i:] + line = i + + // did we find a reference or a footnote? If so, end a paragraph + // preceding it and report that we have consumed up to the end of that + // reference: + if refEnd := isReference(p, current, tabSize); refEnd > 0 { + p.renderParagraph(data[:i]) + return i + refEnd + } + + // did we find a blank line marking the end of the paragraph? + if n := p.isEmpty(current); n > 0 { + // did this blank line followed by a definition list item? + if p.extensions&DefinitionLists != 0 { + if i < len(data)-1 && data[i+1] == ':' { + return p.list(data[prev:], ListTypeDefinition) + } + } + + p.renderParagraph(data[:i]) + return i + n + } + + // an underline under some text marks a heading, so our paragraph ended on prev line + if i > 0 { + if level := p.isUnderlinedHeading(current); level > 0 { + // render the paragraph + p.renderParagraph(data[:prev]) + + // ignore leading and trailing whitespace + eol := i - 1 + for prev < eol && data[prev] == ' ' { + prev++ + } + for eol > prev && data[eol-1] == ' ' { + eol-- + } + + id := "" + if p.extensions&AutoHeadingIDs != 0 { + id = SanitizedAnchorName(string(data[prev:eol])) + } + + block := p.addBlock(Heading, data[prev:eol]) + block.Level = level + block.HeadingID = id + + // find the end of the underline + for i < len(data) && data[i] != '\n' { + i++ + } + return i + } + } + + // if the next line starts a block of HTML, then the paragraph ends here + if p.extensions&LaxHTMLBlocks != 0 { + if data[i] == '<' && p.html(current, false) > 0 { + // rewind to before the HTML block + p.renderParagraph(data[:i]) + return i + } + } + + // if there's a prefixed heading or a horizontal rule after this, paragraph is over + if p.isPrefixHeading(current) || p.isHRule(current) { + p.renderParagraph(data[:i]) + return i + } + + // if there's a fenced code block, paragraph is over + if p.extensions&FencedCode != 0 { + if p.fencedCodeBlock(current, false) > 0 { + p.renderParagraph(data[:i]) + return i + } + } + + // if there's a definition list item, prev line is a definition term + if p.extensions&DefinitionLists != 0 { + if p.dliPrefix(current) != 0 { + ret := p.list(data[prev:], ListTypeDefinition) + return ret + } + } + + // if there's a list after this, paragraph is over + if p.extensions&NoEmptyLineBeforeBlock != 0 { + if p.uliPrefix(current) != 0 || + p.oliPrefix(current) != 0 || + p.quotePrefix(current) != 0 || + p.codePrefix(current) != 0 { + p.renderParagraph(data[:i]) + return i + } + } + + // otherwise, scan to the beginning of the next line + nl := bytes.IndexByte(data[i:], '\n') + if nl >= 0 { + i += nl + 1 + } else { + i += len(data[i:]) + } + } + + p.renderParagraph(data[:i]) + return i +} + +func skipChar(data []byte, start int, char byte) int { + i := start + for i < len(data) && data[i] == char { + i++ + } + return i +} + +func skipUntilChar(text []byte, start int, char byte) int { + i := start + for i < len(text) && text[i] != char { + i++ + } + return i +} + +// SanitizedAnchorName returns a sanitized anchor name for the given text. +// +// It implements the algorithm specified in the package comment. +func SanitizedAnchorName(text string) string { + var anchorName []rune + futureDash := false + for _, r := range text { + switch { + case unicode.IsLetter(r) || unicode.IsNumber(r): + if futureDash && len(anchorName) > 0 { + anchorName = append(anchorName, '-') + } + futureDash = false + anchorName = append(anchorName, unicode.ToLower(r)) + default: + futureDash = true + } + } + return string(anchorName) +} diff --git a/vendor/github.com/russross/blackfriday/v2/doc.go b/vendor/github.com/russross/blackfriday/v2/doc.go new file mode 100644 index 000000000..57ff152a0 --- /dev/null +++ b/vendor/github.com/russross/blackfriday/v2/doc.go @@ -0,0 +1,46 @@ +// Package blackfriday is a markdown processor. +// +// It translates plain text with simple formatting rules into an AST, which can +// then be further processed to HTML (provided by Blackfriday itself) or other +// formats (provided by the community). +// +// The simplest way to invoke Blackfriday is to call the Run function. It will +// take a text input and produce a text output in HTML (or other format). +// +// A slightly more sophisticated way to use Blackfriday is to create a Markdown +// processor and to call Parse, which returns a syntax tree for the input +// document. You can leverage Blackfriday's parsing for content extraction from +// markdown documents. You can assign a custom renderer and set various options +// to the Markdown processor. +// +// If you're interested in calling Blackfriday from command line, see +// https://github.com/russross/blackfriday-tool. +// +// Sanitized Anchor Names +// +// Blackfriday includes an algorithm for creating sanitized anchor names +// corresponding to a given input text. This algorithm is used to create +// anchors for headings when AutoHeadingIDs extension is enabled. The +// algorithm is specified below, so that other packages can create +// compatible anchor names and links to those anchors. +// +// The algorithm iterates over the input text, interpreted as UTF-8, +// one Unicode code point (rune) at a time. All runes that are letters (category L) +// or numbers (category N) are considered valid characters. They are mapped to +// lower case, and included in the output. All other runes are considered +// invalid characters. Invalid characters that precede the first valid character, +// as well as invalid character that follow the last valid character +// are dropped completely. All other sequences of invalid characters +// between two valid characters are replaced with a single dash character '-'. +// +// SanitizedAnchorName exposes this functionality, and can be used to +// create compatible links to the anchor names generated by blackfriday. +// This algorithm is also implemented in a small standalone package at +// github.com/shurcooL/sanitized_anchor_name. It can be useful for clients +// that want a small package and don't need full functionality of blackfriday. +package blackfriday + +// NOTE: Keep Sanitized Anchor Name algorithm in sync with package +// github.com/shurcooL/sanitized_anchor_name. +// Otherwise, users of sanitized_anchor_name will get anchor names +// that are incompatible with those generated by blackfriday. diff --git a/vendor/github.com/russross/blackfriday/v2/entities.go b/vendor/github.com/russross/blackfriday/v2/entities.go new file mode 100644 index 000000000..a2c3edb69 --- /dev/null +++ b/vendor/github.com/russross/blackfriday/v2/entities.go @@ -0,0 +1,2236 @@ +package blackfriday + +// Extracted from https://html.spec.whatwg.org/multipage/entities.json +var entities = map[string]bool{ + "Æ": true, + "Æ": true, + "&": true, + "&": true, + "Á": true, + "Á": true, + "Ă": true, + "Â": true, + "Â": true, + "А": true, + "𝔄": true, + "À": true, + "À": true, + "Α": true, + "Ā": true, + "⩓": true, + "Ą": true, + "𝔸": 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true, + "⫖": true, + "⇙": true, + "⤦": true, + "↙": true, + "↙": true, + "⤪": true, + "ß": true, + "ß": true, + "⌖": true, + "τ": true, + "⎴": true, + "ť": true, + "ţ": true, + "т": true, + "⃛": true, + "⌕": true, + "𝔱": true, + "∴": true, + "∴": true, + "θ": true, + "ϑ": true, + "ϑ": true, + "≈": true, + "∼": true, + " ": true, + "≈": true, + "∼": true, + "þ": true, + "þ": true, + "˜": true, + "×": true, + "×": true, + "⊠": true, + "⨱": true, + "⨰": true, + "∭": true, + "⤨": true, + "⊤": true, + "⌶": true, + "⫱": true, + "𝕥": true, + "⫚": true, + "⤩": true, + "‴": true, + "™": true, + "▵": true, + "▿": true, + "◃": true, + "⊴": true, + "≜": true, + "▹": true, + "⊵": true, + "◬": true, + "≜": true, + "⨺": true, + "⨹": true, + "⧍": true, + "⨻": true, + "⏢": true, + "𝓉": true, + "ц": true, + "ћ": true, + "ŧ": true, + "≬": true, + "↞": true, + "↠": true, + "⇑": true, + "⥣": true, + "ú": true, + "ú": true, + "↑": true, + "ў": true, + "ŭ": true, + "û": true, + "û": true, + "у": true, + "⇅": true, + "ű": true, + "⥮": true, + "⥾": true, + "𝔲": true, + "ù": true, + "ù": true, + "↿": true, + "↾": true, + "▀": true, + "⌜": true, + "⌜": true, + "⌏": true, + "◸": true, + "ū": true, + "¨": true, + "¨": true, + "ų": true, + "𝕦": true, + "↑": true, + "↕": true, + "↿": true, + "↾": true, + "⊎": true, + "υ": true, + "ϒ": true, + "υ": true, + "⇈": true, + "⌝": true, + "⌝": true, + "⌎": true, + "ů": true, + "◹": true, + "𝓊": true, + "⋰": true, + "ũ": true, + "▵": true, + "▴": true, + "⇈": true, + "ü": true, + "ü": true, + "⦧": true, + "⇕": true, + "⫨": true, + "⫩": true, + "⊨": true, + "⦜": true, + "ϵ": true, + "ϰ": true, + "∅": true, + "ϕ": true, + "ϖ": true, + "∝": true, + "↕": true, + "ϱ": true, + "ς": true, + "⊊︀": true, + "⫋︀": true, + "⊋︀": true, + "⫌︀": true, + "ϑ": true, + "⊲": true, + "⊳": true, + "в": true, + "⊢": true, + "∨": true, + "⊻": true, + "≚": true, + "⋮": true, + "|": true, + "|": true, + "𝔳": true, + "⊲": true, + "⊂⃒": true, + "⊃⃒": true, + "𝕧": true, + "∝": true, + "⊳": true, + "𝓋": true, + "⫋︀": true, + "⊊︀": true, + "⫌︀": true, + "⊋︀": true, + "⦚": true, + "ŵ": true, + "⩟": true, + "∧": true, + "≙": true, + "℘": true, + "𝔴": true, + "𝕨": true, + "℘": true, + "≀": true, + "≀": true, + "𝓌": true, + "⋂": true, + "◯": true, + "⋃": true, + "▽": true, + "𝔵": true, + "⟺": true, + "⟷": true, + "ξ": true, + "⟸": true, + "⟵": true, + "⟼": true, + "⋻": true, + "⨀": true, + "𝕩": true, + "⨁": true, + "⨂": true, + "⟹": true, + "⟶": true, + "𝓍": true, + "⨆": true, + "⨄": true, + "△": true, + "⋁": true, + "⋀": true, + "ý": true, + "ý": true, + "я": true, + "ŷ": true, + "ы": true, + "¥": true, + "¥": true, + "𝔶": true, + "ї": true, + "𝕪": true, + "𝓎": true, + "ю": true, + "ÿ": true, + "ÿ": true, + "ź": true, + "ž": true, + "з": true, + "ż": true, + "ℨ": true, + "ζ": true, + "𝔷": true, + "ж": true, + "⇝": true, + "𝕫": true, + "𝓏": true, + "‍": true, + "‌": true, +} diff --git a/vendor/github.com/russross/blackfriday/v2/esc.go b/vendor/github.com/russross/blackfriday/v2/esc.go new file mode 100644 index 000000000..6ab60102c --- /dev/null +++ b/vendor/github.com/russross/blackfriday/v2/esc.go @@ -0,0 +1,70 @@ +package blackfriday + +import ( + "html" + "io" +) + +var htmlEscaper = [256][]byte{ + '&': []byte("&"), + '<': []byte("<"), + '>': []byte(">"), + '"': []byte("""), +} + +func escapeHTML(w io.Writer, s []byte) { + escapeEntities(w, s, false) +} + +func escapeAllHTML(w io.Writer, s []byte) { + escapeEntities(w, s, true) +} + +func escapeEntities(w io.Writer, s []byte, escapeValidEntities bool) { + var start, end int + for end < len(s) { + escSeq := htmlEscaper[s[end]] + if escSeq != nil { + isEntity, entityEnd := nodeIsEntity(s, end) + if isEntity && !escapeValidEntities { + w.Write(s[start : entityEnd+1]) + start = entityEnd + 1 + } else { + w.Write(s[start:end]) + w.Write(escSeq) + start = end + 1 + } + } + end++ + } + if start < len(s) && end <= len(s) { + w.Write(s[start:end]) + } +} + +func nodeIsEntity(s []byte, end int) (isEntity bool, endEntityPos int) { + isEntity = false + endEntityPos = end + 1 + + if s[end] == '&' { + for endEntityPos < len(s) { + if s[endEntityPos] == ';' { + if entities[string(s[end:endEntityPos+1])] { + isEntity = true + break + } + } + if !isalnum(s[endEntityPos]) && s[endEntityPos] != '&' && s[endEntityPos] != '#' { + break + } + endEntityPos++ + } + } + + return isEntity, endEntityPos +} + +func escLink(w io.Writer, text []byte) { + unesc := html.UnescapeString(string(text)) + escapeHTML(w, []byte(unesc)) +} diff --git a/vendor/github.com/russross/blackfriday/v2/go.mod b/vendor/github.com/russross/blackfriday/v2/go.mod new file mode 100644 index 000000000..620b74e0a --- /dev/null +++ b/vendor/github.com/russross/blackfriday/v2/go.mod @@ -0,0 +1 @@ +module github.com/russross/blackfriday/v2 diff --git a/vendor/github.com/russross/blackfriday/v2/html.go b/vendor/github.com/russross/blackfriday/v2/html.go new file mode 100644 index 000000000..cb4f26e30 --- /dev/null +++ b/vendor/github.com/russross/blackfriday/v2/html.go @@ -0,0 +1,952 @@ +// +// Blackfriday Markdown Processor +// Available at http://github.com/russross/blackfriday +// +// Copyright © 2011 Russ Ross . +// Distributed under the Simplified BSD License. +// See README.md for details. +// + +// +// +// HTML rendering backend +// +// + +package blackfriday + +import ( + "bytes" + "fmt" + "io" + "regexp" + "strings" +) + +// HTMLFlags control optional behavior of HTML renderer. +type HTMLFlags int + +// HTML renderer configuration options. +const ( + HTMLFlagsNone HTMLFlags = 0 + SkipHTML HTMLFlags = 1 << iota // Skip preformatted HTML blocks + SkipImages // Skip embedded images + SkipLinks // Skip all links + Safelink // Only link to trusted protocols + NofollowLinks // Only link with rel="nofollow" + NoreferrerLinks // Only link with rel="noreferrer" + NoopenerLinks // Only link with rel="noopener" + HrefTargetBlank // Add a blank target + CompletePage // Generate a complete HTML page + UseXHTML // Generate XHTML output instead of HTML + FootnoteReturnLinks // Generate a link at the end of a footnote to return to the source + Smartypants // Enable smart punctuation substitutions + SmartypantsFractions // Enable smart fractions (with Smartypants) + SmartypantsDashes // Enable smart dashes (with Smartypants) + SmartypantsLatexDashes // Enable LaTeX-style dashes (with Smartypants) + SmartypantsAngledQuotes // Enable angled double quotes (with Smartypants) for double quotes rendering + SmartypantsQuotesNBSP // Enable « French guillemets » (with Smartypants) + TOC // Generate a table of contents +) + +var ( + htmlTagRe = regexp.MustCompile("(?i)^" + htmlTag) +) + +const ( + htmlTag = "(?:" + openTag + "|" + closeTag + "|" + htmlComment + "|" + + processingInstruction + "|" + declaration + "|" + cdata + ")" + closeTag = "]" + openTag = "<" + tagName + attribute + "*" + "\\s*/?>" + attribute = "(?:" + "\\s+" + attributeName + attributeValueSpec + "?)" + attributeValue = "(?:" + unquotedValue + "|" + singleQuotedValue + "|" + doubleQuotedValue + ")" + attributeValueSpec = "(?:" + "\\s*=" + "\\s*" + attributeValue + ")" + attributeName = "[a-zA-Z_:][a-zA-Z0-9:._-]*" + cdata = "" + declaration = "]*>" + doubleQuotedValue = "\"[^\"]*\"" + htmlComment = "|" + processingInstruction = "[<][?].*?[?][>]" + singleQuotedValue = "'[^']*'" + tagName = "[A-Za-z][A-Za-z0-9-]*" + unquotedValue = "[^\"'=<>`\\x00-\\x20]+" +) + +// HTMLRendererParameters is a collection of supplementary parameters tweaking +// the behavior of various parts of HTML renderer. +type HTMLRendererParameters struct { + // Prepend this text to each relative URL. + AbsolutePrefix string + // Add this text to each footnote anchor, to ensure uniqueness. + FootnoteAnchorPrefix string + // Show this text inside the tag for a footnote return link, if the + // HTML_FOOTNOTE_RETURN_LINKS flag is enabled. If blank, the string + // [return] is used. + FootnoteReturnLinkContents string + // If set, add this text to the front of each Heading ID, to ensure + // uniqueness. + HeadingIDPrefix string + // If set, add this text to the back of each Heading ID, to ensure uniqueness. + HeadingIDSuffix string + // Increase heading levels: if the offset is 1,

becomes

etc. + // Negative offset is also valid. + // Resulting levels are clipped between 1 and 6. + HeadingLevelOffset int + + Title string // Document title (used if CompletePage is set) + CSS string // Optional CSS file URL (used if CompletePage is set) + Icon string // Optional icon file URL (used if CompletePage is set) + + Flags HTMLFlags // Flags allow customizing this renderer's behavior +} + +// HTMLRenderer is a type that implements the Renderer interface for HTML output. +// +// Do not create this directly, instead use the NewHTMLRenderer function. +type HTMLRenderer struct { + HTMLRendererParameters + + closeTag string // how to end singleton tags: either " />" or ">" + + // Track heading IDs to prevent ID collision in a single generation. + headingIDs map[string]int + + lastOutputLen int + disableTags int + + sr *SPRenderer +} + +const ( + xhtmlClose = " />" + htmlClose = ">" +) + +// NewHTMLRenderer creates and configures an HTMLRenderer object, which +// satisfies the Renderer interface. +func NewHTMLRenderer(params HTMLRendererParameters) *HTMLRenderer { + // configure the rendering engine + closeTag := htmlClose + if params.Flags&UseXHTML != 0 { + closeTag = xhtmlClose + } + + if params.FootnoteReturnLinkContents == "" { + // U+FE0E is VARIATION SELECTOR-15. + // It suppresses automatic emoji presentation of the preceding + // U+21A9 LEFTWARDS ARROW WITH HOOK on iOS and iPadOS. + params.FootnoteReturnLinkContents = "↩\ufe0e" + } + + return &HTMLRenderer{ + HTMLRendererParameters: params, + + closeTag: closeTag, + headingIDs: make(map[string]int), + + sr: NewSmartypantsRenderer(params.Flags), + } +} + +func isHTMLTag(tag []byte, tagname string) bool { + found, _ := findHTMLTagPos(tag, tagname) + return found +} + +// Look for a character, but ignore it when it's in any kind of quotes, it +// might be JavaScript +func skipUntilCharIgnoreQuotes(html []byte, start int, char byte) int { + inSingleQuote := false + inDoubleQuote := false + inGraveQuote := false + i := start + for i < len(html) { + switch { + case html[i] == char && !inSingleQuote && !inDoubleQuote && !inGraveQuote: + return i + case html[i] == '\'': + inSingleQuote = !inSingleQuote + case html[i] == '"': + inDoubleQuote = !inDoubleQuote + case html[i] == '`': + inGraveQuote = !inGraveQuote + } + i++ + } + return start +} + +func findHTMLTagPos(tag []byte, tagname string) (bool, int) { + i := 0 + if i < len(tag) && tag[0] != '<' { + return false, -1 + } + i++ + i = skipSpace(tag, i) + + if i < len(tag) && tag[i] == '/' { + i++ + } + + i = skipSpace(tag, i) + j := 0 + for ; i < len(tag); i, j = i+1, j+1 { + if j >= len(tagname) { + break + } + + if strings.ToLower(string(tag[i]))[0] != tagname[j] { + return false, -1 + } + } + + if i == len(tag) { + return false, -1 + } + + rightAngle := skipUntilCharIgnoreQuotes(tag, i, '>') + if rightAngle >= i { + return true, rightAngle + } + + return false, -1 +} + +func skipSpace(tag []byte, i int) int { + for i < len(tag) && isspace(tag[i]) { + i++ + } + return i +} + +func isRelativeLink(link []byte) (yes bool) { + // a tag begin with '#' + if link[0] == '#' { + return true + } + + // link begin with '/' but not '//', the second maybe a protocol relative link + if len(link) >= 2 && link[0] == '/' && link[1] != '/' { + return true + } + + // only the root '/' + if len(link) == 1 && link[0] == '/' { + return true + } + + // current directory : begin with "./" + if bytes.HasPrefix(link, []byte("./")) { + return true + } + + // parent directory : begin with "../" + if bytes.HasPrefix(link, []byte("../")) { + return true + } + + return false +} + +func (r *HTMLRenderer) ensureUniqueHeadingID(id string) string { + for count, found := r.headingIDs[id]; found; count, found = r.headingIDs[id] { + tmp := fmt.Sprintf("%s-%d", id, count+1) + + if _, tmpFound := r.headingIDs[tmp]; !tmpFound { + r.headingIDs[id] = count + 1 + id = tmp + } else { + id = id + "-1" + } + } + + if _, found := r.headingIDs[id]; !found { + r.headingIDs[id] = 0 + } + + return id +} + +func (r *HTMLRenderer) addAbsPrefix(link []byte) []byte { + if r.AbsolutePrefix != "" && isRelativeLink(link) && link[0] != '.' { + newDest := r.AbsolutePrefix + if link[0] != '/' { + newDest += "/" + } + newDest += string(link) + return []byte(newDest) + } + return link +} + +func appendLinkAttrs(attrs []string, flags HTMLFlags, link []byte) []string { + if isRelativeLink(link) { + return attrs + } + val := []string{} + if flags&NofollowLinks != 0 { + val = append(val, "nofollow") + } + if flags&NoreferrerLinks != 0 { + val = append(val, "noreferrer") + } + if flags&NoopenerLinks != 0 { + val = append(val, "noopener") + } + if flags&HrefTargetBlank != 0 { + attrs = append(attrs, "target=\"_blank\"") + } + if len(val) == 0 { + return attrs + } + attr := fmt.Sprintf("rel=%q", strings.Join(val, " ")) + return append(attrs, attr) +} + +func isMailto(link []byte) bool { + return bytes.HasPrefix(link, []byte("mailto:")) +} + +func needSkipLink(flags HTMLFlags, dest []byte) bool { + if flags&SkipLinks != 0 { + return true + } + return flags&Safelink != 0 && !isSafeLink(dest) && !isMailto(dest) +} + +func isSmartypantable(node *Node) bool { + pt := node.Parent.Type + return pt != Link && pt != CodeBlock && pt != Code +} + +func appendLanguageAttr(attrs []string, info []byte) []string { + if len(info) == 0 { + return attrs + } + endOfLang := bytes.IndexAny(info, "\t ") + if endOfLang < 0 { + endOfLang = len(info) + } + return append(attrs, fmt.Sprintf("class=\"language-%s\"", info[:endOfLang])) +} + +func (r *HTMLRenderer) tag(w io.Writer, name []byte, attrs []string) { + w.Write(name) + if len(attrs) > 0 { + w.Write(spaceBytes) + w.Write([]byte(strings.Join(attrs, " "))) + } + w.Write(gtBytes) + r.lastOutputLen = 1 +} + +func footnoteRef(prefix string, node *Node) []byte { + urlFrag := prefix + string(slugify(node.Destination)) + anchor := fmt.Sprintf(`%d`, urlFrag, node.NoteID) + return []byte(fmt.Sprintf(`%s`, urlFrag, anchor)) +} + +func footnoteItem(prefix string, slug []byte) []byte { + return []byte(fmt.Sprintf(`
  • `, prefix, slug)) +} + +func footnoteReturnLink(prefix, returnLink string, slug []byte) []byte { + const format = ` %s` + return []byte(fmt.Sprintf(format, prefix, slug, returnLink)) +} + +func itemOpenCR(node *Node) bool { + if node.Prev == nil { + return false + } + ld := node.Parent.ListData + return !ld.Tight && ld.ListFlags&ListTypeDefinition == 0 +} + +func skipParagraphTags(node *Node) bool { + grandparent := node.Parent.Parent + if grandparent == nil || grandparent.Type != List { + return false + } + tightOrTerm := grandparent.Tight || node.Parent.ListFlags&ListTypeTerm != 0 + return grandparent.Type == List && tightOrTerm +} + +func cellAlignment(align CellAlignFlags) string { + switch align { + case TableAlignmentLeft: + return "left" + case TableAlignmentRight: + return "right" + case TableAlignmentCenter: + return "center" + default: + return "" + } +} + +func (r *HTMLRenderer) out(w io.Writer, text []byte) { + if r.disableTags > 0 { + w.Write(htmlTagRe.ReplaceAll(text, []byte{})) + } else { + w.Write(text) + } + r.lastOutputLen = len(text) +} + +func (r *HTMLRenderer) cr(w io.Writer) { + if r.lastOutputLen > 0 { + r.out(w, nlBytes) + } +} + +var ( + nlBytes = []byte{'\n'} + gtBytes = []byte{'>'} + spaceBytes = []byte{' '} +) + +var ( + brTag = []byte("
    ") + brXHTMLTag = []byte("
    ") + emTag = []byte("") + emCloseTag = []byte("") + strongTag = []byte("") + strongCloseTag = []byte("") + delTag = []byte("") + delCloseTag = []byte("") + ttTag = []byte("") + ttCloseTag = []byte("") + aTag = []byte("") + preTag = []byte("
    ")
+	preCloseTag        = []byte("
    ") + codeTag = []byte("") + codeCloseTag = []byte("") + pTag = []byte("

    ") + pCloseTag = []byte("

    ") + blockquoteTag = []byte("
    ") + blockquoteCloseTag = []byte("
    ") + hrTag = []byte("
    ") + hrXHTMLTag = []byte("
    ") + ulTag = []byte("
      ") + ulCloseTag = []byte("
    ") + olTag = []byte("
      ") + olCloseTag = []byte("
    ") + dlTag = []byte("
    ") + dlCloseTag = []byte("
    ") + liTag = []byte("
  • ") + liCloseTag = []byte("
    • ") + ddTag = []byte("
    ") + ddCloseTag = []byte("
    ") + dtTag = []byte("
    ") + dtCloseTag = []byte("
    ") + tableTag = []byte("") + tableCloseTag = []byte("
    ") + tdTag = []byte("") + thTag = []byte("") + theadTag = []byte("") + theadCloseTag = []byte("") + tbodyTag = []byte("") + tbodyCloseTag = []byte("") + trTag = []byte("") + trCloseTag = []byte("") + h1Tag = []byte("") + h2Tag = []byte("") + h3Tag = []byte("") + h4Tag = []byte("") + h5Tag = []byte("") + h6Tag = []byte("") + + footnotesDivBytes = []byte("\n
    \n\n") + footnotesCloseDivBytes = []byte("\n
    \n") +) + +func headingTagsFromLevel(level int) ([]byte, []byte) { + if level <= 1 { + return h1Tag, h1CloseTag + } + switch level { + case 2: + return h2Tag, h2CloseTag + case 3: + return h3Tag, h3CloseTag + case 4: + return h4Tag, h4CloseTag + case 5: + return h5Tag, h5CloseTag + } + return h6Tag, h6CloseTag +} + +func (r *HTMLRenderer) outHRTag(w io.Writer) { + if r.Flags&UseXHTML == 0 { + r.out(w, hrTag) + } else { + r.out(w, hrXHTMLTag) + } +} + +// RenderNode is a default renderer of a single node of a syntax tree. For +// block nodes it will be called twice: first time with entering=true, second +// time with entering=false, so that it could know when it's working on an open +// tag and when on close. It writes the result to w. +// +// The return value is a way to tell the calling walker to adjust its walk +// pattern: e.g. it can terminate the traversal by returning Terminate. Or it +// can ask the walker to skip a subtree of this node by returning SkipChildren. +// The typical behavior is to return GoToNext, which asks for the usual +// traversal to the next node. +func (r *HTMLRenderer) RenderNode(w io.Writer, node *Node, entering bool) WalkStatus { + attrs := []string{} + switch node.Type { + case Text: + if r.Flags&Smartypants != 0 { + var tmp bytes.Buffer + escapeHTML(&tmp, node.Literal) + r.sr.Process(w, tmp.Bytes()) + } else { + if node.Parent.Type == Link { + escLink(w, node.Literal) + } else { + escapeHTML(w, node.Literal) + } + } + case Softbreak: + r.cr(w) + // TODO: make it configurable via out(renderer.softbreak) + case Hardbreak: + if r.Flags&UseXHTML == 0 { + r.out(w, brTag) + } else { + r.out(w, brXHTMLTag) + } + r.cr(w) + case Emph: + if entering { + r.out(w, emTag) + } else { + r.out(w, emCloseTag) + } + case Strong: + if entering { + r.out(w, strongTag) + } else { + r.out(w, strongCloseTag) + } + case Del: + if entering { + r.out(w, delTag) + } else { + r.out(w, delCloseTag) + } + case HTMLSpan: + if r.Flags&SkipHTML != 0 { + break + } + r.out(w, node.Literal) + case Link: + // mark it but don't link it if it is not a safe link: no smartypants + dest := node.LinkData.Destination + if needSkipLink(r.Flags, dest) { + if entering { + r.out(w, ttTag) + } else { + r.out(w, ttCloseTag) + } + } else { + if entering { + dest = r.addAbsPrefix(dest) + var hrefBuf bytes.Buffer + hrefBuf.WriteString("href=\"") + escLink(&hrefBuf, dest) + hrefBuf.WriteByte('"') + attrs = append(attrs, hrefBuf.String()) + if node.NoteID != 0 { + r.out(w, footnoteRef(r.FootnoteAnchorPrefix, node)) + break + } + attrs = appendLinkAttrs(attrs, r.Flags, dest) + if len(node.LinkData.Title) > 0 { + var titleBuff bytes.Buffer + titleBuff.WriteString("title=\"") + escapeHTML(&titleBuff, node.LinkData.Title) + titleBuff.WriteByte('"') + attrs = append(attrs, titleBuff.String()) + } + r.tag(w, aTag, attrs) + } else { + if node.NoteID != 0 { + break + } + r.out(w, aCloseTag) + } + } + case Image: + if r.Flags&SkipImages != 0 { + return SkipChildren + } + if entering { + dest := node.LinkData.Destination + dest = r.addAbsPrefix(dest) + if r.disableTags == 0 { + //if options.safe && potentiallyUnsafe(dest) { + //out(w, ``) + //} else { + r.out(w, []byte(`<img src=`)) + } + } + case Code: + r.out(w, codeTag) + escapeAllHTML(w, node.Literal) + r.out(w, codeCloseTag) + case Document: + break + case Paragraph: + if skipParagraphTags(node) { + break + } + if entering { + // TODO: untangle this clusterfuck about when the newlines need + // to be added and when not. + if node.Prev != nil { + switch node.Prev.Type { + case HTMLBlock, List, Paragraph, Heading, CodeBlock, BlockQuote, HorizontalRule: + r.cr(w) + } + } + if node.Parent.Type == BlockQuote && node.Prev == nil { + r.cr(w) + } + r.out(w, pTag) + } else { + r.out(w, pCloseTag) + if !(node.Parent.Type == Item && node.Next == nil) { + r.cr(w) + } + } + case BlockQuote: + if entering { + r.cr(w) + r.out(w, blockquoteTag) + } else { + r.out(w, blockquoteCloseTag) + r.cr(w) + } + case HTMLBlock: + if r.Flags&SkipHTML != 0 { + break + } + r.cr(w) + r.out(w, node.Literal) + r.cr(w) + case Heading: + headingLevel := r.HTMLRendererParameters.HeadingLevelOffset + node.Level + openTag, closeTag := headingTagsFromLevel(headingLevel) + if entering { + if node.IsTitleblock { + attrs = append(attrs, `class="title"`) + } + if node.HeadingID != "" { + id := r.ensureUniqueHeadingID(node.HeadingID) + if r.HeadingIDPrefix != "" { + id = r.HeadingIDPrefix + id + } + if r.HeadingIDSuffix != "" { + id = id + r.HeadingIDSuffix + } + attrs = append(attrs, fmt.Sprintf(`id="%s"`, id)) + } + r.cr(w) + r.tag(w, openTag, attrs) + } else { + r.out(w, closeTag) + if !(node.Parent.Type == Item && node.Next == nil) { + r.cr(w) + } + } + case HorizontalRule: + r.cr(w) + r.outHRTag(w) + r.cr(w) + case List: + openTag := ulTag + closeTag := ulCloseTag + if node.ListFlags&ListTypeOrdered != 0 { + openTag = olTag + closeTag = olCloseTag + } + if node.ListFlags&ListTypeDefinition != 0 { + openTag = dlTag + closeTag = dlCloseTag + } + if entering { + if node.IsFootnotesList { + r.out(w, footnotesDivBytes) + r.outHRTag(w) + r.cr(w) + } + r.cr(w) + if node.Parent.Type == Item && node.Parent.Parent.Tight { + r.cr(w) + } + r.tag(w, openTag[:len(openTag)-1], attrs) + r.cr(w) + } else { + r.out(w, closeTag) + //cr(w) + //if node.parent.Type != Item { + // cr(w) + //} + if node.Parent.Type == Item && node.Next != nil { + r.cr(w) + } + if node.Parent.Type == Document || node.Parent.Type == BlockQuote { + r.cr(w) + } + if node.IsFootnotesList { + r.out(w, footnotesCloseDivBytes) + } + } + case Item: + openTag := liTag + closeTag := liCloseTag + if node.ListFlags&ListTypeDefinition != 0 { + openTag = ddTag + closeTag = ddCloseTag + } + if node.ListFlags&ListTypeTerm != 0 { + openTag = dtTag + closeTag = dtCloseTag + } + if entering { + if itemOpenCR(node) { + r.cr(w) + } + if node.ListData.RefLink != nil { + slug := slugify(node.ListData.RefLink) + r.out(w, footnoteItem(r.FootnoteAnchorPrefix, slug)) + break + } + r.out(w, openTag) + } else { + if node.ListData.RefLink != nil { + slug := slugify(node.ListData.RefLink) + if r.Flags&FootnoteReturnLinks != 0 { + r.out(w, footnoteReturnLink(r.FootnoteAnchorPrefix, r.FootnoteReturnLinkContents, slug)) + } + } + r.out(w, closeTag) + r.cr(w) + } + case CodeBlock: + attrs = appendLanguageAttr(attrs, node.Info) + r.cr(w) + r.out(w, preTag) + r.tag(w, codeTag[:len(codeTag)-1], attrs) + escapeAllHTML(w, node.Literal) + r.out(w, codeCloseTag) + r.out(w, preCloseTag) + if node.Parent.Type != Item { + r.cr(w) + } + case Table: + if entering { + r.cr(w) + r.out(w, tableTag) + } else { + r.out(w, tableCloseTag) + r.cr(w) + } + case TableCell: + openTag := tdTag + closeTag := tdCloseTag + if node.IsHeader { + openTag = thTag + closeTag = thCloseTag + } + if entering { + align := cellAlignment(node.Align) + if align != "" { + attrs = append(attrs, fmt.Sprintf(`align="%s"`, align)) + } + if node.Prev == nil { + r.cr(w) + } + r.tag(w, openTag, attrs) + } else { + r.out(w, closeTag) + r.cr(w) + } + case TableHead: + if entering { + r.cr(w) + r.out(w, theadTag) + } else { + r.out(w, theadCloseTag) + r.cr(w) + } + case TableBody: + if entering { + r.cr(w) + r.out(w, tbodyTag) + // XXX: this is to adhere to a rather silly test. Should fix test. + if node.FirstChild == nil { + r.cr(w) + } + } else { + r.out(w, tbodyCloseTag) + r.cr(w) + } + case TableRow: + if entering { + r.cr(w) + r.out(w, trTag) + } else { + r.out(w, trCloseTag) + r.cr(w) + } + default: + panic("Unknown node type " + node.Type.String()) + } + return GoToNext +} + +// RenderHeader writes HTML document preamble and TOC if requested. +func (r *HTMLRenderer) RenderHeader(w io.Writer, ast *Node) { + r.writeDocumentHeader(w) + if r.Flags&TOC != 0 { + r.writeTOC(w, ast) + } +} + +// RenderFooter writes HTML document footer. +func (r *HTMLRenderer) RenderFooter(w io.Writer, ast *Node) { + if r.Flags&CompletePage == 0 { + return + } + io.WriteString(w, "\n\n\n") +} + +func (r *HTMLRenderer) writeDocumentHeader(w io.Writer) { + if r.Flags&CompletePage == 0 { + return + } + ending := "" + if r.Flags&UseXHTML != 0 { + io.WriteString(w, "\n") + io.WriteString(w, "\n") + ending = " /" + } else { + io.WriteString(w, "\n") + io.WriteString(w, "\n") + } + io.WriteString(w, "\n") + io.WriteString(w, " ") + if r.Flags&Smartypants != 0 { + r.sr.Process(w, []byte(r.Title)) + } else { + escapeHTML(w, []byte(r.Title)) + } + io.WriteString(w, "\n") + io.WriteString(w, " \n") + io.WriteString(w, " \n") + if r.CSS != "" { + io.WriteString(w, " \n") + } + if r.Icon != "" { + io.WriteString(w, " \n") + } + io.WriteString(w, "\n") + io.WriteString(w, "\n\n") +} + +func (r *HTMLRenderer) writeTOC(w io.Writer, ast *Node) { + buf := bytes.Buffer{} + + inHeading := false + tocLevel := 0 + headingCount := 0 + + ast.Walk(func(node *Node, entering bool) WalkStatus { + if node.Type == Heading && !node.HeadingData.IsTitleblock { + inHeading = entering + if entering { + node.HeadingID = fmt.Sprintf("toc_%d", headingCount) + if node.Level == tocLevel { + buf.WriteString("\n\n
  • ") + } else if node.Level < tocLevel { + for node.Level < tocLevel { + tocLevel-- + buf.WriteString("
    • \n") + } + buf.WriteString("\n\n
  • ") + } else { + for node.Level > tocLevel { + tocLevel++ + buf.WriteString("\n") + } + + if buf.Len() > 0 { + io.WriteString(w, "\n") + } + r.lastOutputLen = buf.Len() +} diff --git a/vendor/github.com/russross/blackfriday/v2/inline.go b/vendor/github.com/russross/blackfriday/v2/inline.go new file mode 100644 index 000000000..d45bd9417 --- /dev/null +++ b/vendor/github.com/russross/blackfriday/v2/inline.go @@ -0,0 +1,1228 @@ +// +// Blackfriday Markdown Processor +// Available at http://github.com/russross/blackfriday +// +// Copyright © 2011 Russ Ross . +// Distributed under the Simplified BSD License. +// See README.md for details. +// + +// +// Functions to parse inline elements. +// + +package blackfriday + +import ( + "bytes" + "regexp" + "strconv" +) + +var ( + urlRe = `((https?|ftp):\/\/|\/)[-A-Za-z0-9+&@#\/%?=~_|!:,.;\(\)]+` + anchorRe = regexp.MustCompile(`^(]+")?\s?>` + urlRe + `<\/a>)`) + + // https://www.w3.org/TR/html5/syntax.html#character-references + // highest unicode code point in 17 planes (2^20): 1,114,112d = + // 7 dec digits or 6 hex digits + // named entity references can be 2-31 characters with stuff like < + // at one end and ∳ at the other. There + // are also sometimes numbers at the end, although this isn't inherent + // in the specification; there are never numbers anywhere else in + // current character references, though; see ¾ and ▒, etc. + // https://www.w3.org/TR/html5/syntax.html#named-character-references + // + // entity := "&" (named group | number ref) ";" + // named group := [a-zA-Z]{2,31}[0-9]{0,2} + // number ref := "#" (dec ref | hex ref) + // dec ref := [0-9]{1,7} + // hex ref := ("x" | "X") [0-9a-fA-F]{1,6} + htmlEntityRe = regexp.MustCompile(`&([a-zA-Z]{2,31}[0-9]{0,2}|#([0-9]{1,7}|[xX][0-9a-fA-F]{1,6}));`) +) + +// Functions to parse text within a block +// Each function returns the number of chars taken care of +// data is the complete block being rendered +// offset is the number of valid chars before the current cursor + +func (p *Markdown) inline(currBlock *Node, data []byte) { + // handlers might call us recursively: enforce a maximum depth + if p.nesting >= p.maxNesting || len(data) == 0 { + return + } + p.nesting++ + beg, end := 0, 0 + for end < len(data) { + handler := p.inlineCallback[data[end]] + if handler != nil { + if consumed, node := handler(p, data, end); consumed == 0 { + // No action from the callback. + end++ + } else { + // Copy inactive chars into the output. + currBlock.AppendChild(text(data[beg:end])) + if node != nil { + currBlock.AppendChild(node) + } + // Skip past whatever the callback used. + beg = end + consumed + end = beg + } + } else { + end++ + } + } + if beg < len(data) { + if data[end-1] == '\n' { + end-- + } + currBlock.AppendChild(text(data[beg:end])) + } + p.nesting-- +} + +// single and double emphasis parsing +func emphasis(p *Markdown, data []byte, offset int) (int, *Node) { + data = data[offset:] + c := data[0] + + if len(data) > 2 && data[1] != c { + // whitespace cannot follow an opening emphasis; + // strikethrough only takes two characters '~~' + if c == '~' || isspace(data[1]) { + return 0, nil + } + ret, node := helperEmphasis(p, data[1:], c) + if ret == 0 { + return 0, nil + } + + return ret + 1, node + } + + if len(data) > 3 && data[1] == c && data[2] != c { + if isspace(data[2]) { + return 0, nil + } + ret, node := helperDoubleEmphasis(p, data[2:], c) + if ret == 0 { + return 0, nil + } + + return ret + 2, node + } + + if len(data) > 4 && data[1] == c && data[2] == c && data[3] != c { + if c == '~' || isspace(data[3]) { + return 0, nil + } + ret, node := helperTripleEmphasis(p, data, 3, c) + if ret == 0 { + return 0, nil + } + + return ret + 3, node + } + + return 0, nil +} + +func codeSpan(p *Markdown, data []byte, offset int) (int, *Node) { + data = data[offset:] + + nb := 0 + + // count the number of backticks in the delimiter + for nb < len(data) && data[nb] == '`' { + nb++ + } + + // find the next delimiter + i, end := 0, 0 + for end = nb; end < len(data) && i < nb; end++ { + if data[end] == '`' { + i++ + } else { + i = 0 + } + } + + // no matching delimiter? + if i < nb && end >= len(data) { + return 0, nil + } + + // trim outside whitespace + fBegin := nb + for fBegin < end && data[fBegin] == ' ' { + fBegin++ + } + + fEnd := end - nb + for fEnd > fBegin && data[fEnd-1] == ' ' { + fEnd-- + } + + // render the code span + if fBegin != fEnd { + code := NewNode(Code) + code.Literal = data[fBegin:fEnd] + return end, code + } + + return end, nil +} + +// newline preceded by two spaces becomes
    +func maybeLineBreak(p *Markdown, data []byte, offset int) (int, *Node) { + origOffset := offset + for offset < len(data) && data[offset] == ' ' { + offset++ + } + + if offset < len(data) && data[offset] == '\n' { + if offset-origOffset >= 2 { + return offset - origOffset + 1, NewNode(Hardbreak) + } + return offset - origOffset, nil + } + return 0, nil +} + +// newline without two spaces works when HardLineBreak is enabled +func lineBreak(p *Markdown, data []byte, offset int) (int, *Node) { + if p.extensions&HardLineBreak != 0 { + return 1, NewNode(Hardbreak) + } + return 0, nil +} + +type linkType int + +const ( + linkNormal linkType = iota + linkImg + linkDeferredFootnote + linkInlineFootnote +) + +func isReferenceStyleLink(data []byte, pos int, t linkType) bool { + if t == linkDeferredFootnote { + return false + } + return pos < len(data)-1 && data[pos] == '[' && data[pos+1] != '^' +} + +func maybeImage(p *Markdown, data []byte, offset int) (int, *Node) { + if offset < len(data)-1 && data[offset+1] == '[' { + return link(p, data, offset) + } + return 0, nil +} + +func maybeInlineFootnote(p *Markdown, data []byte, offset int) (int, *Node) { + if offset < len(data)-1 && data[offset+1] == '[' { + return link(p, data, offset) + } + return 0, nil +} + +// '[': parse a link or an image or a footnote +func link(p *Markdown, data []byte, offset int) (int, *Node) { + // no links allowed inside regular links, footnote, and deferred footnotes + if p.insideLink && (offset > 0 && data[offset-1] == '[' || len(data)-1 > offset && data[offset+1] == '^') { + return 0, nil + } + + var t linkType + switch { + // special case: ![^text] == deferred footnote (that follows something with + // an exclamation point) + case p.extensions&Footnotes != 0 && len(data)-1 > offset && data[offset+1] == '^': + t = linkDeferredFootnote + // ![alt] == image + case offset >= 0 && data[offset] == '!': + t = linkImg + offset++ + // ^[text] == inline footnote + // [^refId] == deferred footnote + case p.extensions&Footnotes != 0: + if offset >= 0 && data[offset] == '^' { + t = linkInlineFootnote + offset++ + } else if len(data)-1 > offset && data[offset+1] == '^' { + t = linkDeferredFootnote + } + // [text] == regular link + default: + t = linkNormal + } + + data = data[offset:] + + var ( + i = 1 + noteID int + title, link, altContent []byte + textHasNl = false + ) + + if t == linkDeferredFootnote { + i++ + } + + // look for the matching closing bracket + for level := 1; level > 0 && i < len(data); i++ { + switch { + case data[i] == '\n': + textHasNl = true + + case isBackslashEscaped(data, i): + continue + + case data[i] == '[': + level++ + + case data[i] == ']': + level-- + if level <= 0 { + i-- // compensate for extra i++ in for loop + } + } + } + + if i >= len(data) { + return 0, nil + } + + txtE := i + i++ + var footnoteNode *Node + + // skip any amount of whitespace or newline + // (this is much more lax than original markdown syntax) + for i < len(data) && isspace(data[i]) { + i++ + } + + // inline style link + switch { + case i < len(data) && data[i] == '(': + // skip initial whitespace + i++ + + for i < len(data) && isspace(data[i]) { + i++ + } + + linkB := i + + // look for link end: ' " ) + findlinkend: + for i < len(data) { + switch { + case data[i] == '\\': + i += 2 + + case data[i] == ')' || data[i] == '\'' || data[i] == '"': + break findlinkend + + default: + i++ + } + } + + if i >= len(data) { + return 0, nil + } + linkE := i + + // look for title end if present + titleB, titleE := 0, 0 + if data[i] == '\'' || data[i] == '"' { + i++ + titleB = i + + findtitleend: + for i < len(data) { + switch { + case data[i] == '\\': + i += 2 + + case data[i] == ')': + break findtitleend + + default: + i++ + } + } + + if i >= len(data) { + return 0, nil + } + + // skip whitespace after title + titleE = i - 1 + for titleE > titleB && isspace(data[titleE]) { + titleE-- + } + + // check for closing quote presence + if data[titleE] != '\'' && data[titleE] != '"' { + titleB, titleE = 0, 0 + linkE = i + } + } + + // remove whitespace at the end of the link + for linkE > linkB && isspace(data[linkE-1]) { + linkE-- + } + + // remove optional angle brackets around the link + if data[linkB] == '<' { + linkB++ + } + if data[linkE-1] == '>' { + linkE-- + } + + // build escaped link and title + if linkE > linkB { + link = data[linkB:linkE] + } + + if titleE > titleB { + title = data[titleB:titleE] + } + + i++ + + // reference style link + case isReferenceStyleLink(data, i, t): + var id []byte + altContentConsidered := false + + // look for the id + i++ + linkB := i + for i < len(data) && data[i] != ']' { + i++ + } + if i >= len(data) { + return 0, nil + } + linkE := i + + // find the reference + if linkB == linkE { + if textHasNl { + var b bytes.Buffer + + for j := 1; j < txtE; j++ { + switch { + case data[j] != '\n': + b.WriteByte(data[j]) + case data[j-1] != ' ': + b.WriteByte(' ') + } + } + + id = b.Bytes() + } else { + id = data[1:txtE] + altContentConsidered = true + } + } else { + id = data[linkB:linkE] + } + + // find the reference with matching id + lr, ok := p.getRef(string(id)) + if !ok { + return 0, nil + } + + // keep link and title from reference + link = lr.link + title = lr.title + if altContentConsidered { + altContent = lr.text + } + i++ + + // shortcut reference style link or reference or inline footnote + default: + var id []byte + + // craft the id + if textHasNl { + var b bytes.Buffer + + for j := 1; j < txtE; j++ { + switch { + case data[j] != '\n': + b.WriteByte(data[j]) + case data[j-1] != ' ': + b.WriteByte(' ') + } + } + + id = b.Bytes() + } else { + if t == linkDeferredFootnote { + id = data[2:txtE] // get rid of the ^ + } else { + id = data[1:txtE] + } + } + + footnoteNode = NewNode(Item) + if t == linkInlineFootnote { + // create a new reference + noteID = len(p.notes) + 1 + + var fragment []byte + if len(id) > 0 { + if len(id) < 16 { + fragment = make([]byte, len(id)) + } else { + fragment = make([]byte, 16) + } + copy(fragment, slugify(id)) + } else { + fragment = append([]byte("footnote-"), []byte(strconv.Itoa(noteID))...) + } + + ref := &reference{ + noteID: noteID, + hasBlock: false, + link: fragment, + title: id, + footnote: footnoteNode, + } + + p.notes = append(p.notes, ref) + + link = ref.link + title = ref.title + } else { + // find the reference with matching id + lr, ok := p.getRef(string(id)) + if !ok { + return 0, nil + } + + if t == linkDeferredFootnote { + lr.noteID = len(p.notes) + 1 + lr.footnote = footnoteNode + p.notes = append(p.notes, lr) + } + + // keep link and title from reference + link = lr.link + // if inline footnote, title == footnote contents + title = lr.title + noteID = lr.noteID + } + + // rewind the whitespace + i = txtE + 1 + } + + var uLink []byte + if t == linkNormal || t == linkImg { + if len(link) > 0 { + var uLinkBuf bytes.Buffer + unescapeText(&uLinkBuf, link) + uLink = uLinkBuf.Bytes() + } + + // links need something to click on and somewhere to go + if len(uLink) == 0 || (t == linkNormal && txtE <= 1) { + return 0, nil + } + } + + // call the relevant rendering function + var linkNode *Node + switch t { + case linkNormal: + linkNode = NewNode(Link) + linkNode.Destination = normalizeURI(uLink) + linkNode.Title = title + if len(altContent) > 0 { + linkNode.AppendChild(text(altContent)) + } else { + // links cannot contain other links, so turn off link parsing + // temporarily and recurse + insideLink := p.insideLink + p.insideLink = true + p.inline(linkNode, data[1:txtE]) + p.insideLink = insideLink + } + + case linkImg: + linkNode = NewNode(Image) + linkNode.Destination = uLink + linkNode.Title = title + linkNode.AppendChild(text(data[1:txtE])) + i++ + + case linkInlineFootnote, linkDeferredFootnote: + linkNode = NewNode(Link) + linkNode.Destination = link + linkNode.Title = title + linkNode.NoteID = noteID + linkNode.Footnote = footnoteNode + if t == linkInlineFootnote { + i++ + } + + default: + return 0, nil + } + + return i, linkNode +} + +func (p *Markdown) inlineHTMLComment(data []byte) int { + if len(data) < 5 { + return 0 + } + if data[0] != '<' || data[1] != '!' || data[2] != '-' || data[3] != '-' { + return 0 + } + i := 5 + // scan for an end-of-comment marker, across lines if necessary + for i < len(data) && !(data[i-2] == '-' && data[i-1] == '-' && data[i] == '>') { + i++ + } + // no end-of-comment marker + if i >= len(data) { + return 0 + } + return i + 1 +} + +func stripMailto(link []byte) []byte { + if bytes.HasPrefix(link, []byte("mailto://")) { + return link[9:] + } else if bytes.HasPrefix(link, []byte("mailto:")) { + return link[7:] + } else { + return link + } +} + +// autolinkType specifies a kind of autolink that gets detected. +type autolinkType int + +// These are the possible flag values for the autolink renderer. +const ( + notAutolink autolinkType = iota + normalAutolink + emailAutolink +) + +// '<' when tags or autolinks are allowed +func leftAngle(p *Markdown, data []byte, offset int) (int, *Node) { + data = data[offset:] + altype, end := tagLength(data) + if size := p.inlineHTMLComment(data); size > 0 { + end = size + } + if end > 2 { + if altype != notAutolink { + var uLink bytes.Buffer + unescapeText(&uLink, data[1:end+1-2]) + if uLink.Len() > 0 { + link := uLink.Bytes() + node := NewNode(Link) + node.Destination = link + if altype == emailAutolink { + node.Destination = append([]byte("mailto:"), link...) + } + node.AppendChild(text(stripMailto(link))) + return end, node + } + } else { + htmlTag := NewNode(HTMLSpan) + htmlTag.Literal = data[:end] + return end, htmlTag + } + } + + return end, nil +} + +// '\\' backslash escape +var escapeChars = []byte("\\`*_{}[]()#+-.!:|&<>~") + +func escape(p *Markdown, data []byte, offset int) (int, *Node) { + data = data[offset:] + + if len(data) > 1 { + if p.extensions&BackslashLineBreak != 0 && data[1] == '\n' { + return 2, NewNode(Hardbreak) + } + if bytes.IndexByte(escapeChars, data[1]) < 0 { + return 0, nil + } + + return 2, text(data[1:2]) + } + + return 2, nil +} + +func unescapeText(ob *bytes.Buffer, src []byte) { + i := 0 + for i < len(src) { + org := i + for i < len(src) && src[i] != '\\' { + i++ + } + + if i > org { + ob.Write(src[org:i]) + } + + if i+1 >= len(src) { + break + } + + ob.WriteByte(src[i+1]) + i += 2 + } +} + +// '&' escaped when it doesn't belong to an entity +// valid entities are assumed to be anything matching &#?[A-Za-z0-9]+; +func entity(p *Markdown, data []byte, offset int) (int, *Node) { + data = data[offset:] + + end := 1 + + if end < len(data) && data[end] == '#' { + end++ + } + + for end < len(data) && isalnum(data[end]) { + end++ + } + + if end < len(data) && data[end] == ';' { + end++ // real entity + } else { + return 0, nil // lone '&' + } + + ent := data[:end] + // undo & escaping or it will be converted to &amp; by another + // escaper in the renderer + if bytes.Equal(ent, []byte("&")) { + ent = []byte{'&'} + } + + return end, text(ent) +} + +func linkEndsWithEntity(data []byte, linkEnd int) bool { + entityRanges := htmlEntityRe.FindAllIndex(data[:linkEnd], -1) + return entityRanges != nil && entityRanges[len(entityRanges)-1][1] == linkEnd +} + +// hasPrefixCaseInsensitive is a custom implementation of +// strings.HasPrefix(strings.ToLower(s), prefix) +// we rolled our own because ToLower pulls in a huge machinery of lowercasing +// anything from Unicode and that's very slow. Since this func will only be +// used on ASCII protocol prefixes, we can take shortcuts. +func hasPrefixCaseInsensitive(s, prefix []byte) bool { + if len(s) < len(prefix) { + return false + } + delta := byte('a' - 'A') + for i, b := range prefix { + if b != s[i] && b != s[i]+delta { + return false + } + } + return true +} + +var protocolPrefixes = [][]byte{ + []byte("http://"), + []byte("https://"), + []byte("ftp://"), + []byte("file://"), + []byte("mailto:"), +} + +const shortestPrefix = 6 // len("ftp://"), the shortest of the above + +func maybeAutoLink(p *Markdown, data []byte, offset int) (int, *Node) { + // quick check to rule out most false hits + if p.insideLink || len(data) < offset+shortestPrefix { + return 0, nil + } + for _, prefix := range protocolPrefixes { + endOfHead := offset + 8 // 8 is the len() of the longest prefix + if endOfHead > len(data) { + endOfHead = len(data) + } + if hasPrefixCaseInsensitive(data[offset:endOfHead], prefix) { + return autoLink(p, data, offset) + } + } + return 0, nil +} + +func autoLink(p *Markdown, data []byte, offset int) (int, *Node) { + // Now a more expensive check to see if we're not inside an anchor element + anchorStart := offset + offsetFromAnchor := 0 + for anchorStart > 0 && data[anchorStart] != '<' { + anchorStart-- + offsetFromAnchor++ + } + + anchorStr := anchorRe.Find(data[anchorStart:]) + if anchorStr != nil { + anchorClose := NewNode(HTMLSpan) + anchorClose.Literal = anchorStr[offsetFromAnchor:] + return len(anchorStr) - offsetFromAnchor, anchorClose + } + + // scan backward for a word boundary + rewind := 0 + for offset-rewind > 0 && rewind <= 7 && isletter(data[offset-rewind-1]) { + rewind++ + } + if rewind > 6 { // longest supported protocol is "mailto" which has 6 letters + return 0, nil + } + + origData := data + data = data[offset-rewind:] + + if !isSafeLink(data) { + return 0, nil + } + + linkEnd := 0 + for linkEnd < len(data) && !isEndOfLink(data[linkEnd]) { + linkEnd++ + } + + // Skip punctuation at the end of the link + if (data[linkEnd-1] == '.' || data[linkEnd-1] == ',') && data[linkEnd-2] != '\\' { + linkEnd-- + } + + // But don't skip semicolon if it's a part of escaped entity: + if data[linkEnd-1] == ';' && data[linkEnd-2] != '\\' && !linkEndsWithEntity(data, linkEnd) { + linkEnd-- + } + + // See if the link finishes with a punctuation sign that can be closed. + var copen byte + switch data[linkEnd-1] { + case '"': + copen = '"' + case '\'': + copen = '\'' + case ')': + copen = '(' + case ']': + copen = '[' + case '}': + copen = '{' + default: + copen = 0 + } + + if copen != 0 { + bufEnd := offset - rewind + linkEnd - 2 + + openDelim := 1 + + /* Try to close the final punctuation sign in this same line; + * if we managed to close it outside of the URL, that means that it's + * not part of the URL. If it closes inside the URL, that means it + * is part of the URL. + * + * Examples: + * + * foo http://www.pokemon.com/Pikachu_(Electric) bar + * => http://www.pokemon.com/Pikachu_(Electric) + * + * foo (http://www.pokemon.com/Pikachu_(Electric)) bar + * => http://www.pokemon.com/Pikachu_(Electric) + * + * foo http://www.pokemon.com/Pikachu_(Electric)) bar + * => http://www.pokemon.com/Pikachu_(Electric)) + * + * (foo http://www.pokemon.com/Pikachu_(Electric)) bar + * => foo http://www.pokemon.com/Pikachu_(Electric) + */ + + for bufEnd >= 0 && origData[bufEnd] != '\n' && openDelim != 0 { + if origData[bufEnd] == data[linkEnd-1] { + openDelim++ + } + + if origData[bufEnd] == copen { + openDelim-- + } + + bufEnd-- + } + + if openDelim == 0 { + linkEnd-- + } + } + + var uLink bytes.Buffer + unescapeText(&uLink, data[:linkEnd]) + + if uLink.Len() > 0 { + node := NewNode(Link) + node.Destination = uLink.Bytes() + node.AppendChild(text(uLink.Bytes())) + return linkEnd, node + } + + return linkEnd, nil +} + +func isEndOfLink(char byte) bool { + return isspace(char) || char == '<' +} + +var validUris = [][]byte{[]byte("http://"), []byte("https://"), []byte("ftp://"), []byte("mailto://")} +var validPaths = [][]byte{[]byte("/"), []byte("./"), []byte("../")} + +func isSafeLink(link []byte) bool { + for _, path := range validPaths { + if len(link) >= len(path) && bytes.Equal(link[:len(path)], path) { + if len(link) == len(path) { + return true + } else if isalnum(link[len(path)]) { + return true + } + } + } + + for _, prefix := range validUris { + // TODO: handle unicode here + // case-insensitive prefix test + if len(link) > len(prefix) && bytes.Equal(bytes.ToLower(link[:len(prefix)]), prefix) && isalnum(link[len(prefix)]) { + return true + } + } + + return false +} + +// return the length of the given tag, or 0 is it's not valid +func tagLength(data []byte) (autolink autolinkType, end int) { + var i, j int + + // a valid tag can't be shorter than 3 chars + if len(data) < 3 { + return notAutolink, 0 + } + + // begins with a '<' optionally followed by '/', followed by letter or number + if data[0] != '<' { + return notAutolink, 0 + } + if data[1] == '/' { + i = 2 + } else { + i = 1 + } + + if !isalnum(data[i]) { + return notAutolink, 0 + } + + // scheme test + autolink = notAutolink + + // try to find the beginning of an URI + for i < len(data) && (isalnum(data[i]) || data[i] == '.' || data[i] == '+' || data[i] == '-') { + i++ + } + + if i > 1 && i < len(data) && data[i] == '@' { + if j = isMailtoAutoLink(data[i:]); j != 0 { + return emailAutolink, i + j + } + } + + if i > 2 && i < len(data) && data[i] == ':' { + autolink = normalAutolink + i++ + } + + // complete autolink test: no whitespace or ' or " + switch { + case i >= len(data): + autolink = notAutolink + case autolink != notAutolink: + j = i + + for i < len(data) { + if data[i] == '\\' { + i += 2 + } else if data[i] == '>' || data[i] == '\'' || data[i] == '"' || isspace(data[i]) { + break + } else { + i++ + } + + } + + if i >= len(data) { + return autolink, 0 + } + if i > j && data[i] == '>' { + return autolink, i + 1 + } + + // one of the forbidden chars has been found + autolink = notAutolink + } + i += bytes.IndexByte(data[i:], '>') + if i < 0 { + return autolink, 0 + } + return autolink, i + 1 +} + +// look for the address part of a mail autolink and '>' +// this is less strict than the original markdown e-mail address matching +func isMailtoAutoLink(data []byte) int { + nb := 0 + + // address is assumed to be: [-@._a-zA-Z0-9]+ with exactly one '@' + for i := 0; i < len(data); i++ { + if isalnum(data[i]) { + continue + } + + switch data[i] { + case '@': + nb++ + + case '-', '.', '_': + break + + case '>': + if nb == 1 { + return i + 1 + } + return 0 + default: + return 0 + } + } + + return 0 +} + +// look for the next emph char, skipping other constructs +func helperFindEmphChar(data []byte, c byte) int { + i := 0 + + for i < len(data) { + for i < len(data) && data[i] != c && data[i] != '`' && data[i] != '[' { + i++ + } + if i >= len(data) { + return 0 + } + // do not count escaped chars + if i != 0 && data[i-1] == '\\' { + i++ + continue + } + if data[i] == c { + return i + } + + if data[i] == '`' { + // skip a code span + tmpI := 0 + i++ + for i < len(data) && data[i] != '`' { + if tmpI == 0 && data[i] == c { + tmpI = i + } + i++ + } + if i >= len(data) { + return tmpI + } + i++ + } else if data[i] == '[' { + // skip a link + tmpI := 0 + i++ + for i < len(data) && data[i] != ']' { + if tmpI == 0 && data[i] == c { + tmpI = i + } + i++ + } + i++ + for i < len(data) && (data[i] == ' ' || data[i] == '\n') { + i++ + } + if i >= len(data) { + return tmpI + } + if data[i] != '[' && data[i] != '(' { // not a link + if tmpI > 0 { + return tmpI + } + continue + } + cc := data[i] + i++ + for i < len(data) && data[i] != cc { + if tmpI == 0 && data[i] == c { + return i + } + i++ + } + if i >= len(data) { + return tmpI + } + i++ + } + } + return 0 +} + +func helperEmphasis(p *Markdown, data []byte, c byte) (int, *Node) { + i := 0 + + // skip one symbol if coming from emph3 + if len(data) > 1 && data[0] == c && data[1] == c { + i = 1 + } + + for i < len(data) { + length := helperFindEmphChar(data[i:], c) + if length == 0 { + return 0, nil + } + i += length + if i >= len(data) { + return 0, nil + } + + if i+1 < len(data) && data[i+1] == c { + i++ + continue + } + + if data[i] == c && !isspace(data[i-1]) { + + if p.extensions&NoIntraEmphasis != 0 { + if !(i+1 == len(data) || isspace(data[i+1]) || ispunct(data[i+1])) { + continue + } + } + + emph := NewNode(Emph) + p.inline(emph, data[:i]) + return i + 1, emph + } + } + + return 0, nil +} + +func helperDoubleEmphasis(p *Markdown, data []byte, c byte) (int, *Node) { + i := 0 + + for i < len(data) { + length := helperFindEmphChar(data[i:], c) + if length == 0 { + return 0, nil + } + i += length + + if i+1 < len(data) && data[i] == c && data[i+1] == c && i > 0 && !isspace(data[i-1]) { + nodeType := Strong + if c == '~' { + nodeType = Del + } + node := NewNode(nodeType) + p.inline(node, data[:i]) + return i + 2, node + } + i++ + } + return 0, nil +} + +func helperTripleEmphasis(p *Markdown, data []byte, offset int, c byte) (int, *Node) { + i := 0 + origData := data + data = data[offset:] + + for i < len(data) { + length := helperFindEmphChar(data[i:], c) + if length == 0 { + return 0, nil + } + i += length + + // skip whitespace preceded symbols + if data[i] != c || isspace(data[i-1]) { + continue + } + + switch { + case i+2 < len(data) && data[i+1] == c && data[i+2] == c: + // triple symbol found + strong := NewNode(Strong) + em := NewNode(Emph) + strong.AppendChild(em) + p.inline(em, data[:i]) + return i + 3, strong + case (i+1 < len(data) && data[i+1] == c): + // double symbol found, hand over to emph1 + length, node := helperEmphasis(p, origData[offset-2:], c) + if length == 0 { + return 0, nil + } + return length - 2, node + default: + // single symbol found, hand over to emph2 + length, node := helperDoubleEmphasis(p, origData[offset-1:], c) + if length == 0 { + return 0, nil + } + return length - 1, node + } + } + return 0, nil +} + +func text(s []byte) *Node { + node := NewNode(Text) + node.Literal = s + return node +} + +func normalizeURI(s []byte) []byte { + return s // TODO: implement +} diff --git a/vendor/github.com/russross/blackfriday/v2/markdown.go b/vendor/github.com/russross/blackfriday/v2/markdown.go new file mode 100644 index 000000000..58d2e4538 --- /dev/null +++ b/vendor/github.com/russross/blackfriday/v2/markdown.go @@ -0,0 +1,950 @@ +// Blackfriday Markdown Processor +// Available at http://github.com/russross/blackfriday +// +// Copyright © 2011 Russ Ross . +// Distributed under the Simplified BSD License. +// See README.md for details. + +package blackfriday + +import ( + "bytes" + "fmt" + "io" + "strings" + "unicode/utf8" +) + +// +// Markdown parsing and processing +// + +// Version string of the package. Appears in the rendered document when +// CompletePage flag is on. +const Version = "2.0" + +// Extensions is a bitwise or'ed collection of enabled Blackfriday's +// extensions. +type Extensions int + +// These are the supported markdown parsing extensions. +// OR these values together to select multiple extensions. +const ( + NoExtensions Extensions = 0 + NoIntraEmphasis Extensions = 1 << iota // Ignore emphasis markers inside words + Tables // Render tables + FencedCode // Render fenced code blocks + Autolink // Detect embedded URLs that are not explicitly marked + Strikethrough // Strikethrough text using ~~test~~ + LaxHTMLBlocks // Loosen up HTML block parsing rules + SpaceHeadings // Be strict about prefix heading rules + HardLineBreak // Translate newlines into line breaks + TabSizeEight // Expand tabs to eight spaces instead of four + Footnotes // Pandoc-style footnotes + NoEmptyLineBeforeBlock // No need to insert an empty line to start a (code, quote, ordered list, unordered list) block + HeadingIDs // specify heading IDs with {#id} + Titleblock // Titleblock ala pandoc + AutoHeadingIDs // Create the heading ID from the text + BackslashLineBreak // Translate trailing backslashes into line breaks + DefinitionLists // Render definition lists + + CommonHTMLFlags HTMLFlags = UseXHTML | Smartypants | + SmartypantsFractions | SmartypantsDashes | SmartypantsLatexDashes + + CommonExtensions Extensions = NoIntraEmphasis | Tables | FencedCode | + Autolink | Strikethrough | SpaceHeadings | HeadingIDs | + BackslashLineBreak | DefinitionLists +) + +// ListType contains bitwise or'ed flags for list and list item objects. +type ListType int + +// These are the possible flag values for the ListItem renderer. +// Multiple flag values may be ORed together. +// These are mostly of interest if you are writing a new output format. +const ( + ListTypeOrdered ListType = 1 << iota + ListTypeDefinition + ListTypeTerm + + ListItemContainsBlock + ListItemBeginningOfList // TODO: figure out if this is of any use now + ListItemEndOfList +) + +// CellAlignFlags holds a type of alignment in a table cell. +type CellAlignFlags int + +// These are the possible flag values for the table cell renderer. +// Only a single one of these values will be used; they are not ORed together. +// These are mostly of interest if you are writing a new output format. +const ( + TableAlignmentLeft CellAlignFlags = 1 << iota + TableAlignmentRight + TableAlignmentCenter = (TableAlignmentLeft | TableAlignmentRight) +) + +// The size of a tab stop. +const ( + TabSizeDefault = 4 + TabSizeDouble = 8 +) + +// blockTags is a set of tags that are recognized as HTML block tags. +// Any of these can be included in markdown text without special escaping. +var blockTags = map[string]struct{}{ + "blockquote": {}, + "del": {}, + "div": {}, + "dl": {}, + "fieldset": {}, + "form": {}, + "h1": {}, + "h2": {}, + "h3": {}, + "h4": {}, + "h5": {}, + "h6": {}, + "iframe": {}, + "ins": {}, + "math": {}, + "noscript": {}, + "ol": {}, + "pre": {}, + "p": {}, + "script": {}, + "style": {}, + "table": {}, + "ul": {}, + + // HTML5 + "address": {}, + "article": {}, + "aside": {}, + "canvas": {}, + "figcaption": {}, + "figure": {}, + "footer": {}, + "header": {}, + "hgroup": {}, + "main": {}, + "nav": {}, + "output": {}, + "progress": {}, + "section": {}, + "video": {}, +} + +// Renderer is the rendering interface. This is mostly of interest if you are +// implementing a new rendering format. +// +// Only an HTML implementation is provided in this repository, see the README +// for external implementations. +type Renderer interface { + // RenderNode is the main rendering method. It will be called once for + // every leaf node and twice for every non-leaf node (first with + // entering=true, then with entering=false). The method should write its + // rendition of the node to the supplied writer w. + RenderNode(w io.Writer, node *Node, entering bool) WalkStatus + + // RenderHeader is a method that allows the renderer to produce some + // content preceding the main body of the output document. The header is + // understood in the broad sense here. For example, the default HTML + // renderer will write not only the HTML document preamble, but also the + // table of contents if it was requested. + // + // The method will be passed an entire document tree, in case a particular + // implementation needs to inspect it to produce output. + // + // The output should be written to the supplied writer w. If your + // implementation has no header to write, supply an empty implementation. + RenderHeader(w io.Writer, ast *Node) + + // RenderFooter is a symmetric counterpart of RenderHeader. + RenderFooter(w io.Writer, ast *Node) +} + +// Callback functions for inline parsing. One such function is defined +// for each character that triggers a response when parsing inline data. +type inlineParser func(p *Markdown, data []byte, offset int) (int, *Node) + +// Markdown is a type that holds extensions and the runtime state used by +// Parse, and the renderer. You can not use it directly, construct it with New. +type Markdown struct { + renderer Renderer + referenceOverride ReferenceOverrideFunc + refs map[string]*reference + inlineCallback [256]inlineParser + extensions Extensions + nesting int + maxNesting int + insideLink bool + + // Footnotes need to be ordered as well as available to quickly check for + // presence. If a ref is also a footnote, it's stored both in refs and here + // in notes. Slice is nil if footnotes not enabled. + notes []*reference + + doc *Node + tip *Node // = doc + oldTip *Node + lastMatchedContainer *Node // = doc + allClosed bool +} + +func (p *Markdown) getRef(refid string) (ref *reference, found bool) { + if p.referenceOverride != nil { + r, overridden := p.referenceOverride(refid) + if overridden { + if r == nil { + return nil, false + } + return &reference{ + link: []byte(r.Link), + title: []byte(r.Title), + noteID: 0, + hasBlock: false, + text: []byte(r.Text)}, true + } + } + // refs are case insensitive + ref, found = p.refs[strings.ToLower(refid)] + return ref, found +} + +func (p *Markdown) finalize(block *Node) { + above := block.Parent + block.open = false + p.tip = above +} + +func (p *Markdown) addChild(node NodeType, offset uint32) *Node { + return p.addExistingChild(NewNode(node), offset) +} + +func (p *Markdown) addExistingChild(node *Node, offset uint32) *Node { + for !p.tip.canContain(node.Type) { + p.finalize(p.tip) + } + p.tip.AppendChild(node) + p.tip = node + return node +} + +func (p *Markdown) closeUnmatchedBlocks() { + if !p.allClosed { + for p.oldTip != p.lastMatchedContainer { + parent := p.oldTip.Parent + p.finalize(p.oldTip) + p.oldTip = parent + } + p.allClosed = true + } +} + +// +// +// Public interface +// +// + +// Reference represents the details of a link. +// See the documentation in Options for more details on use-case. +type Reference struct { + // Link is usually the URL the reference points to. + Link string + // Title is the alternate text describing the link in more detail. + Title string + // Text is the optional text to override the ref with if the syntax used was + // [refid][] + Text string +} + +// ReferenceOverrideFunc is expected to be called with a reference string and +// return either a valid Reference type that the reference string maps to or +// nil. If overridden is false, the default reference logic will be executed. +// See the documentation in Options for more details on use-case. +type ReferenceOverrideFunc func(reference string) (ref *Reference, overridden bool) + +// New constructs a Markdown processor. You can use the same With* functions as +// for Run() to customize parser's behavior and the renderer. +func New(opts ...Option) *Markdown { + var p Markdown + for _, opt := range opts { + opt(&p) + } + p.refs = make(map[string]*reference) + p.maxNesting = 16 + p.insideLink = false + docNode := NewNode(Document) + p.doc = docNode + p.tip = docNode + p.oldTip = docNode + p.lastMatchedContainer = docNode + p.allClosed = true + // register inline parsers + p.inlineCallback[' '] = maybeLineBreak + p.inlineCallback['*'] = emphasis + p.inlineCallback['_'] = emphasis + if p.extensions&Strikethrough != 0 { + p.inlineCallback['~'] = emphasis + } + p.inlineCallback['`'] = codeSpan + p.inlineCallback['\n'] = lineBreak + p.inlineCallback['['] = link + p.inlineCallback['<'] = leftAngle + p.inlineCallback['\\'] = escape + p.inlineCallback['&'] = entity + p.inlineCallback['!'] = maybeImage + p.inlineCallback['^'] = maybeInlineFootnote + if p.extensions&Autolink != 0 { + p.inlineCallback['h'] = maybeAutoLink + p.inlineCallback['m'] = maybeAutoLink + p.inlineCallback['f'] = maybeAutoLink + p.inlineCallback['H'] = maybeAutoLink + p.inlineCallback['M'] = maybeAutoLink + p.inlineCallback['F'] = maybeAutoLink + } + if p.extensions&Footnotes != 0 { + p.notes = make([]*reference, 0) + } + return &p +} + +// Option customizes the Markdown processor's default behavior. +type Option func(*Markdown) + +// WithRenderer allows you to override the default renderer. +func WithRenderer(r Renderer) Option { + return func(p *Markdown) { + p.renderer = r + } +} + +// WithExtensions allows you to pick some of the many extensions provided by +// Blackfriday. You can bitwise OR them. +func WithExtensions(e Extensions) Option { + return func(p *Markdown) { + p.extensions = e + } +} + +// WithNoExtensions turns off all extensions and custom behavior. +func WithNoExtensions() Option { + return func(p *Markdown) { + p.extensions = NoExtensions + p.renderer = NewHTMLRenderer(HTMLRendererParameters{ + Flags: HTMLFlagsNone, + }) + } +} + +// WithRefOverride sets an optional function callback that is called every +// time a reference is resolved. +// +// In Markdown, the link reference syntax can be made to resolve a link to +// a reference instead of an inline URL, in one of the following ways: +// +// * [link text][refid] +// * [refid][] +// +// Usually, the refid is defined at the bottom of the Markdown document. If +// this override function is provided, the refid is passed to the override +// function first, before consulting the defined refids at the bottom. If +// the override function indicates an override did not occur, the refids at +// the bottom will be used to fill in the link details. +func WithRefOverride(o ReferenceOverrideFunc) Option { + return func(p *Markdown) { + p.referenceOverride = o + } +} + +// Run is the main entry point to Blackfriday. It parses and renders a +// block of markdown-encoded text. +// +// The simplest invocation of Run takes one argument, input: +// output := Run(input) +// This will parse the input with CommonExtensions enabled and render it with +// the default HTMLRenderer (with CommonHTMLFlags). +// +// Variadic arguments opts can customize the default behavior. Since Markdown +// type does not contain exported fields, you can not use it directly. Instead, +// use the With* functions. For example, this will call the most basic +// functionality, with no extensions: +// output := Run(input, WithNoExtensions()) +// +// You can use any number of With* arguments, even contradicting ones. They +// will be applied in order of appearance and the latter will override the +// former: +// output := Run(input, WithNoExtensions(), WithExtensions(exts), +// WithRenderer(yourRenderer)) +func Run(input []byte, opts ...Option) []byte { + r := NewHTMLRenderer(HTMLRendererParameters{ + Flags: CommonHTMLFlags, + }) + optList := []Option{WithRenderer(r), WithExtensions(CommonExtensions)} + optList = append(optList, opts...) + parser := New(optList...) + ast := parser.Parse(input) + var buf bytes.Buffer + parser.renderer.RenderHeader(&buf, ast) + ast.Walk(func(node *Node, entering bool) WalkStatus { + return parser.renderer.RenderNode(&buf, node, entering) + }) + parser.renderer.RenderFooter(&buf, ast) + return buf.Bytes() +} + +// Parse is an entry point to the parsing part of Blackfriday. It takes an +// input markdown document and produces a syntax tree for its contents. This +// tree can then be rendered with a default or custom renderer, or +// analyzed/transformed by the caller to whatever non-standard needs they have. +// The return value is the root node of the syntax tree. +func (p *Markdown) Parse(input []byte) *Node { + p.block(input) + // Walk the tree and finish up some of unfinished blocks + for p.tip != nil { + p.finalize(p.tip) + } + // Walk the tree again and process inline markdown in each block + p.doc.Walk(func(node *Node, entering bool) WalkStatus { + if node.Type == Paragraph || node.Type == Heading || node.Type == TableCell { + p.inline(node, node.content) + node.content = nil + } + return GoToNext + }) + p.parseRefsToAST() + return p.doc +} + +func (p *Markdown) parseRefsToAST() { + if p.extensions&Footnotes == 0 || len(p.notes) == 0 { + return + } + p.tip = p.doc + block := p.addBlock(List, nil) + block.IsFootnotesList = true + block.ListFlags = ListTypeOrdered + flags := ListItemBeginningOfList + // Note: this loop is intentionally explicit, not range-form. This is + // because the body of the loop will append nested footnotes to p.notes and + // we need to process those late additions. Range form would only walk over + // the fixed initial set. + for i := 0; i < len(p.notes); i++ { + ref := p.notes[i] + p.addExistingChild(ref.footnote, 0) + block := ref.footnote + block.ListFlags = flags | ListTypeOrdered + block.RefLink = ref.link + if ref.hasBlock { + flags |= ListItemContainsBlock + p.block(ref.title) + } else { + p.inline(block, ref.title) + } + flags &^= ListItemBeginningOfList | ListItemContainsBlock + } + above := block.Parent + finalizeList(block) + p.tip = above + block.Walk(func(node *Node, entering bool) WalkStatus { + if node.Type == Paragraph || node.Type == Heading { + p.inline(node, node.content) + node.content = nil + } + return GoToNext + }) +} + +// +// Link references +// +// This section implements support for references that (usually) appear +// as footnotes in a document, and can be referenced anywhere in the document. +// The basic format is: +// +// [1]: http://www.google.com/ "Google" +// [2]: http://www.github.com/ "Github" +// +// Anywhere in the document, the reference can be linked by referring to its +// label, i.e., 1 and 2 in this example, as in: +// +// This library is hosted on [Github][2], a git hosting site. +// +// Actual footnotes as specified in Pandoc and supported by some other Markdown +// libraries such as php-markdown are also taken care of. They look like this: +// +// This sentence needs a bit of further explanation.[^note] +// +// [^note]: This is the explanation. +// +// Footnotes should be placed at the end of the document in an ordered list. +// Finally, there are inline footnotes such as: +// +// Inline footnotes^[Also supported.] provide a quick inline explanation, +// but are rendered at the bottom of the document. +// + +// reference holds all information necessary for a reference-style links or +// footnotes. +// +// Consider this markdown with reference-style links: +// +// [link][ref] +// +// [ref]: /url/ "tooltip title" +// +// It will be ultimately converted to this HTML: +// +//

    link

    +// +// And a reference structure will be populated as follows: +// +// p.refs["ref"] = &reference{ +// link: "/url/", +// title: "tooltip title", +// } +// +// Alternatively, reference can contain information about a footnote. Consider +// this markdown: +// +// Text needing a footnote.[^a] +// +// [^a]: This is the note +// +// A reference structure will be populated as follows: +// +// p.refs["a"] = &reference{ +// link: "a", +// title: "This is the note", +// noteID: , +// } +// +// TODO: As you can see, it begs for splitting into two dedicated structures +// for refs and for footnotes. +type reference struct { + link []byte + title []byte + noteID int // 0 if not a footnote ref + hasBlock bool + footnote *Node // a link to the Item node within a list of footnotes + + text []byte // only gets populated by refOverride feature with Reference.Text +} + +func (r *reference) String() string { + return fmt.Sprintf("{link: %q, title: %q, text: %q, noteID: %d, hasBlock: %v}", + r.link, r.title, r.text, r.noteID, r.hasBlock) +} + +// Check whether or not data starts with a reference link. +// If so, it is parsed and stored in the list of references +// (in the render struct). +// Returns the number of bytes to skip to move past it, +// or zero if the first line is not a reference. +func isReference(p *Markdown, data []byte, tabSize int) int { + // up to 3 optional leading spaces + if len(data) < 4 { + return 0 + } + i := 0 + for i < 3 && data[i] == ' ' { + i++ + } + + noteID := 0 + + // id part: anything but a newline between brackets + if data[i] != '[' { + return 0 + } + i++ + if p.extensions&Footnotes != 0 { + if i < len(data) && data[i] == '^' { + // we can set it to anything here because the proper noteIds will + // be assigned later during the second pass. It just has to be != 0 + noteID = 1 + i++ + } + } + idOffset := i + for i < len(data) && data[i] != '\n' && data[i] != '\r' && data[i] != ']' { + i++ + } + if i >= len(data) || data[i] != ']' { + return 0 + } + idEnd := i + // footnotes can have empty ID, like this: [^], but a reference can not be + // empty like this: []. Break early if it's not a footnote and there's no ID + if noteID == 0 && idOffset == idEnd { + return 0 + } + // spacer: colon (space | tab)* newline? (space | tab)* + i++ + if i >= len(data) || data[i] != ':' { + return 0 + } + i++ + for i < len(data) && (data[i] == ' ' || data[i] == '\t') { + i++ + } + if i < len(data) && (data[i] == '\n' || data[i] == '\r') { + i++ + if i < len(data) && data[i] == '\n' && data[i-1] == '\r' { + i++ + } + } + for i < len(data) && (data[i] == ' ' || data[i] == '\t') { + i++ + } + if i >= len(data) { + return 0 + } + + var ( + linkOffset, linkEnd int + titleOffset, titleEnd int + lineEnd int + raw []byte + hasBlock bool + ) + + if p.extensions&Footnotes != 0 && noteID != 0 { + linkOffset, linkEnd, raw, hasBlock = scanFootnote(p, data, i, tabSize) + lineEnd = linkEnd + } else { + linkOffset, linkEnd, titleOffset, titleEnd, lineEnd = scanLinkRef(p, data, i) + } + if lineEnd == 0 { + return 0 + } + + // a valid ref has been found + + ref := &reference{ + noteID: noteID, + hasBlock: hasBlock, + } + + if noteID > 0 { + // reusing the link field for the id since footnotes don't have links + ref.link = data[idOffset:idEnd] + // if footnote, it's not really a title, it's the contained text + ref.title = raw + } else { + ref.link = data[linkOffset:linkEnd] + ref.title = data[titleOffset:titleEnd] + } + + // id matches are case-insensitive + id := string(bytes.ToLower(data[idOffset:idEnd])) + + p.refs[id] = ref + + return lineEnd +} + +func scanLinkRef(p *Markdown, data []byte, i int) (linkOffset, linkEnd, titleOffset, titleEnd, lineEnd int) { + // link: whitespace-free sequence, optionally between angle brackets + if data[i] == '<' { + i++ + } + linkOffset = i + for i < len(data) && data[i] != ' ' && data[i] != '\t' && data[i] != '\n' && data[i] != '\r' { + i++ + } + linkEnd = i + if data[linkOffset] == '<' && data[linkEnd-1] == '>' { + linkOffset++ + linkEnd-- + } + + // optional spacer: (space | tab)* (newline | '\'' | '"' | '(' ) + for i < len(data) && (data[i] == ' ' || data[i] == '\t') { + i++ + } + if i < len(data) && data[i] != '\n' && data[i] != '\r' && data[i] != '\'' && data[i] != '"' && data[i] != '(' { + return + } + + // compute end-of-line + if i >= len(data) || data[i] == '\r' || data[i] == '\n' { + lineEnd = i + } + if i+1 < len(data) && data[i] == '\r' && data[i+1] == '\n' { + lineEnd++ + } + + // optional (space|tab)* spacer after a newline + if lineEnd > 0 { + i = lineEnd + 1 + for i < len(data) && (data[i] == ' ' || data[i] == '\t') { + i++ + } + } + + // optional title: any non-newline sequence enclosed in '"() alone on its line + if i+1 < len(data) && (data[i] == '\'' || data[i] == '"' || data[i] == '(') { + i++ + titleOffset = i + + // look for EOL + for i < len(data) && data[i] != '\n' && data[i] != '\r' { + i++ + } + if i+1 < len(data) && data[i] == '\n' && data[i+1] == '\r' { + titleEnd = i + 1 + } else { + titleEnd = i + } + + // step back + i-- + for i > titleOffset && (data[i] == ' ' || data[i] == '\t') { + i-- + } + if i > titleOffset && (data[i] == '\'' || data[i] == '"' || data[i] == ')') { + lineEnd = titleEnd + titleEnd = i + } + } + + return +} + +// The first bit of this logic is the same as Parser.listItem, but the rest +// is much simpler. This function simply finds the entire block and shifts it +// over by one tab if it is indeed a block (just returns the line if it's not). +// blockEnd is the end of the section in the input buffer, and contents is the +// extracted text that was shifted over one tab. It will need to be rendered at +// the end of the document. +func scanFootnote(p *Markdown, data []byte, i, indentSize int) (blockStart, blockEnd int, contents []byte, hasBlock bool) { + if i == 0 || len(data) == 0 { + return + } + + // skip leading whitespace on first line + for i < len(data) && data[i] == ' ' { + i++ + } + + blockStart = i + + // find the end of the line + blockEnd = i + for i < len(data) && data[i-1] != '\n' { + i++ + } + + // get working buffer + var raw bytes.Buffer + + // put the first line into the working buffer + raw.Write(data[blockEnd:i]) + blockEnd = i + + // process the following lines + containsBlankLine := false + +gatherLines: + for blockEnd < len(data) { + i++ + + // find the end of this line + for i < len(data) && data[i-1] != '\n' { + i++ + } + + // if it is an empty line, guess that it is part of this item + // and move on to the next line + if p.isEmpty(data[blockEnd:i]) > 0 { + containsBlankLine = true + blockEnd = i + continue + } + + n := 0 + if n = isIndented(data[blockEnd:i], indentSize); n == 0 { + // this is the end of the block. + // we don't want to include this last line in the index. + break gatherLines + } + + // if there were blank lines before this one, insert a new one now + if containsBlankLine { + raw.WriteByte('\n') + containsBlankLine = false + } + + // get rid of that first tab, write to buffer + raw.Write(data[blockEnd+n : i]) + hasBlock = true + + blockEnd = i + } + + if data[blockEnd-1] != '\n' { + raw.WriteByte('\n') + } + + contents = raw.Bytes() + + return +} + +// +// +// Miscellaneous helper functions +// +// + +// Test if a character is a punctuation symbol. +// Taken from a private function in regexp in the stdlib. +func ispunct(c byte) bool { + for _, r := range []byte("!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~") { + if c == r { + return true + } + } + return false +} + +// Test if a character is a whitespace character. +func isspace(c byte) bool { + return ishorizontalspace(c) || isverticalspace(c) +} + +// Test if a character is a horizontal whitespace character. +func ishorizontalspace(c byte) bool { + return c == ' ' || c == '\t' +} + +// Test if a character is a vertical character. +func isverticalspace(c byte) bool { + return c == '\n' || c == '\r' || c == '\f' || c == '\v' +} + +// Test if a character is letter. +func isletter(c byte) bool { + return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') +} + +// Test if a character is a letter or a digit. +// TODO: check when this is looking for ASCII alnum and when it should use unicode +func isalnum(c byte) bool { + return (c >= '0' && c <= '9') || isletter(c) +} + +// Replace tab characters with spaces, aligning to the next TAB_SIZE column. +// always ends output with a newline +func expandTabs(out *bytes.Buffer, line []byte, tabSize int) { + // first, check for common cases: no tabs, or only tabs at beginning of line + i, prefix := 0, 0 + slowcase := false + for i = 0; i < len(line); i++ { + if line[i] == '\t' { + if prefix == i { + prefix++ + } else { + slowcase = true + break + } + } + } + + // no need to decode runes if all tabs are at the beginning of the line + if !slowcase { + for i = 0; i < prefix*tabSize; i++ { + out.WriteByte(' ') + } + out.Write(line[prefix:]) + return + } + + // the slow case: we need to count runes to figure out how + // many spaces to insert for each tab + column := 0 + i = 0 + for i < len(line) { + start := i + for i < len(line) && line[i] != '\t' { + _, size := utf8.DecodeRune(line[i:]) + i += size + column++ + } + + if i > start { + out.Write(line[start:i]) + } + + if i >= len(line) { + break + } + + for { + out.WriteByte(' ') + column++ + if column%tabSize == 0 { + break + } + } + + i++ + } +} + +// Find if a line counts as indented or not. +// Returns number of characters the indent is (0 = not indented). +func isIndented(data []byte, indentSize int) int { + if len(data) == 0 { + return 0 + } + if data[0] == '\t' { + return 1 + } + if len(data) < indentSize { + return 0 + } + for i := 0; i < indentSize; i++ { + if data[i] != ' ' { + return 0 + } + } + return indentSize +} + +// Create a url-safe slug for fragments +func slugify(in []byte) []byte { + if len(in) == 0 { + return in + } + out := make([]byte, 0, len(in)) + sym := false + + for _, ch := range in { + if isalnum(ch) { + sym = false + out = append(out, ch) + } else if sym { + continue + } else { + out = append(out, '-') + sym = true + } + } + var a, b int + var ch byte + for a, ch = range out { + if ch != '-' { + break + } + } + for b = len(out) - 1; b > 0; b-- { + if out[b] != '-' { + break + } + } + return out[a : b+1] +} diff --git a/vendor/github.com/russross/blackfriday/v2/node.go b/vendor/github.com/russross/blackfriday/v2/node.go new file mode 100644 index 000000000..04e6050ce --- /dev/null +++ b/vendor/github.com/russross/blackfriday/v2/node.go @@ -0,0 +1,360 @@ +package blackfriday + +import ( + "bytes" + "fmt" +) + +// NodeType specifies a type of a single node of a syntax tree. Usually one +// node (and its type) corresponds to a single markdown feature, e.g. emphasis +// or code block. +type NodeType int + +// Constants for identifying different types of nodes. See NodeType. +const ( + Document NodeType = iota + BlockQuote + List + Item + Paragraph + Heading + HorizontalRule + Emph + Strong + Del + Link + Image + Text + HTMLBlock + CodeBlock + Softbreak + Hardbreak + Code + HTMLSpan + Table + TableCell + TableHead + TableBody + TableRow +) + +var nodeTypeNames = []string{ + Document: "Document", + BlockQuote: "BlockQuote", + List: "List", + Item: "Item", + Paragraph: "Paragraph", + Heading: "Heading", + HorizontalRule: "HorizontalRule", + Emph: "Emph", + Strong: "Strong", + Del: "Del", + Link: "Link", + Image: "Image", + Text: "Text", + HTMLBlock: "HTMLBlock", + CodeBlock: "CodeBlock", + Softbreak: "Softbreak", + Hardbreak: "Hardbreak", + Code: "Code", + HTMLSpan: "HTMLSpan", + Table: "Table", + TableCell: "TableCell", + TableHead: "TableHead", + TableBody: "TableBody", + TableRow: "TableRow", +} + +func (t NodeType) String() string { + return nodeTypeNames[t] +} + +// ListData contains fields relevant to a List and Item node type. +type ListData struct { + ListFlags ListType + Tight bool // Skip

    s around list item data if true + BulletChar byte // '*', '+' or '-' in bullet lists + Delimiter byte // '.' or ')' after the number in ordered lists + RefLink []byte // If not nil, turns this list item into a footnote item and triggers different rendering + IsFootnotesList bool // This is a list of footnotes +} + +// LinkData contains fields relevant to a Link node type. +type LinkData struct { + Destination []byte // Destination is what goes into a href + Title []byte // Title is the tooltip thing that goes in a title attribute + NoteID int // NoteID contains a serial number of a footnote, zero if it's not a footnote + Footnote *Node // If it's a footnote, this is a direct link to the footnote Node. Otherwise nil. +} + +// CodeBlockData contains fields relevant to a CodeBlock node type. +type CodeBlockData struct { + IsFenced bool // Specifies whether it's a fenced code block or an indented one + Info []byte // This holds the info string + FenceChar byte + FenceLength int + FenceOffset int +} + +// TableCellData contains fields relevant to a TableCell node type. +type TableCellData struct { + IsHeader bool // This tells if it's under the header row + Align CellAlignFlags // This holds the value for align attribute +} + +// HeadingData contains fields relevant to a Heading node type. +type HeadingData struct { + Level int // This holds the heading level number + HeadingID string // This might hold heading ID, if present + IsTitleblock bool // Specifies whether it's a title block +} + +// Node is a single element in the abstract syntax tree of the parsed document. +// It holds connections to the structurally neighboring nodes and, for certain +// types of nodes, additional information that might be needed when rendering. +type Node struct { + Type NodeType // Determines the type of the node + Parent *Node // Points to the parent + FirstChild *Node // Points to the first child, if any + LastChild *Node // Points to the last child, if any + Prev *Node // Previous sibling; nil if it's the first child + Next *Node // Next sibling; nil if it's the last child + + Literal []byte // Text contents of the leaf nodes + + HeadingData // Populated if Type is Heading + ListData // Populated if Type is List + CodeBlockData // Populated if Type is CodeBlock + LinkData // Populated if Type is Link + TableCellData // Populated if Type is TableCell + + content []byte // Markdown content of the block nodes + open bool // Specifies an open block node that has not been finished to process yet +} + +// NewNode allocates a node of a specified type. +func NewNode(typ NodeType) *Node { + return &Node{ + Type: typ, + open: true, + } +} + +func (n *Node) String() string { + ellipsis := "" + snippet := n.Literal + if len(snippet) > 16 { + snippet = snippet[:16] + ellipsis = "..." + } + return fmt.Sprintf("%s: '%s%s'", n.Type, snippet, ellipsis) +} + +// Unlink removes node 'n' from the tree. +// It panics if the node is nil. +func (n *Node) Unlink() { + if n.Prev != nil { + n.Prev.Next = n.Next + } else if n.Parent != nil { + n.Parent.FirstChild = n.Next + } + if n.Next != nil { + n.Next.Prev = n.Prev + } else if n.Parent != nil { + n.Parent.LastChild = n.Prev + } + n.Parent = nil + n.Next = nil + n.Prev = nil +} + +// AppendChild adds a node 'child' as a child of 'n'. +// It panics if either node is nil. +func (n *Node) AppendChild(child *Node) { + child.Unlink() + child.Parent = n + if n.LastChild != nil { + n.LastChild.Next = child + child.Prev = n.LastChild + n.LastChild = child + } else { + n.FirstChild = child + n.LastChild = child + } +} + +// InsertBefore inserts 'sibling' immediately before 'n'. +// It panics if either node is nil. +func (n *Node) InsertBefore(sibling *Node) { + sibling.Unlink() + sibling.Prev = n.Prev + if sibling.Prev != nil { + sibling.Prev.Next = sibling + } + sibling.Next = n + n.Prev = sibling + sibling.Parent = n.Parent + if sibling.Prev == nil { + sibling.Parent.FirstChild = sibling + } +} + +// IsContainer returns true if 'n' can contain children. +func (n *Node) IsContainer() bool { + switch n.Type { + case Document: + fallthrough + case BlockQuote: + fallthrough + case List: + fallthrough + case Item: + fallthrough + case Paragraph: + fallthrough + case Heading: + fallthrough + case Emph: + fallthrough + case Strong: + fallthrough + case Del: + fallthrough + case Link: + fallthrough + case Image: + fallthrough + case Table: + fallthrough + case TableHead: + fallthrough + case TableBody: + fallthrough + case TableRow: + fallthrough + case TableCell: + return true + default: + return false + } +} + +// IsLeaf returns true if 'n' is a leaf node. +func (n *Node) IsLeaf() bool { + return !n.IsContainer() +} + +func (n *Node) canContain(t NodeType) bool { + if n.Type == List { + return t == Item + } + if n.Type == Document || n.Type == BlockQuote || n.Type == Item { + return t != Item + } + if n.Type == Table { + return t == TableHead || t == TableBody + } + if n.Type == TableHead || n.Type == TableBody { + return t == TableRow + } + if n.Type == TableRow { + return t == TableCell + } + return false +} + +// WalkStatus allows NodeVisitor to have some control over the tree traversal. +// It is returned from NodeVisitor and different values allow Node.Walk to +// decide which node to go to next. +type WalkStatus int + +const ( + // GoToNext is the default traversal of every node. + GoToNext WalkStatus = iota + // SkipChildren tells walker to skip all children of current node. + SkipChildren + // Terminate tells walker to terminate the traversal. + Terminate +) + +// NodeVisitor is a callback to be called when traversing the syntax tree. +// Called twice for every node: once with entering=true when the branch is +// first visited, then with entering=false after all the children are done. +type NodeVisitor func(node *Node, entering bool) WalkStatus + +// Walk is a convenience method that instantiates a walker and starts a +// traversal of subtree rooted at n. +func (n *Node) Walk(visitor NodeVisitor) { + w := newNodeWalker(n) + for w.current != nil { + status := visitor(w.current, w.entering) + switch status { + case GoToNext: + w.next() + case SkipChildren: + w.entering = false + w.next() + case Terminate: + return + } + } +} + +type nodeWalker struct { + current *Node + root *Node + entering bool +} + +func newNodeWalker(root *Node) *nodeWalker { + return &nodeWalker{ + current: root, + root: root, + entering: true, + } +} + +func (nw *nodeWalker) next() { + if (!nw.current.IsContainer() || !nw.entering) && nw.current == nw.root { + nw.current = nil + return + } + if nw.entering && nw.current.IsContainer() { + if nw.current.FirstChild != nil { + nw.current = nw.current.FirstChild + nw.entering = true + } else { + nw.entering = false + } + } else if nw.current.Next == nil { + nw.current = nw.current.Parent + nw.entering = false + } else { + nw.current = nw.current.Next + nw.entering = true + } +} + +func dump(ast *Node) { + fmt.Println(dumpString(ast)) +} + +func dumpR(ast *Node, depth int) string { + if ast == nil { + return "" + } + indent := bytes.Repeat([]byte("\t"), depth) + content := ast.Literal + if content == nil { + content = ast.content + } + result := fmt.Sprintf("%s%s(%q)\n", indent, ast.Type, content) + for n := ast.FirstChild; n != nil; n = n.Next { + result += dumpR(n, depth+1) + } + return result +} + +func dumpString(ast *Node) string { + return dumpR(ast, 0) +} diff --git a/vendor/github.com/russross/blackfriday/v2/smartypants.go b/vendor/github.com/russross/blackfriday/v2/smartypants.go new file mode 100644 index 000000000..3a220e942 --- /dev/null +++ b/vendor/github.com/russross/blackfriday/v2/smartypants.go @@ -0,0 +1,457 @@ +// +// Blackfriday Markdown Processor +// Available at http://github.com/russross/blackfriday +// +// Copyright © 2011 Russ Ross . +// Distributed under the Simplified BSD License. +// See README.md for details. +// + +// +// +// SmartyPants rendering +// +// + +package blackfriday + +import ( + "bytes" + "io" +) + +// SPRenderer is a struct containing state of a Smartypants renderer. +type SPRenderer struct { + inSingleQuote bool + inDoubleQuote bool + callbacks [256]smartCallback +} + +func wordBoundary(c byte) bool { + return c == 0 || isspace(c) || ispunct(c) +} + +func tolower(c byte) byte { + if c >= 'A' && c <= 'Z' { + return c - 'A' + 'a' + } + return c +} + +func isdigit(c byte) bool { + return c >= '0' && c <= '9' +} + +func smartQuoteHelper(out *bytes.Buffer, previousChar byte, nextChar byte, quote byte, isOpen *bool, addNBSP bool) bool { + // edge of the buffer is likely to be a tag that we don't get to see, + // so we treat it like text sometimes + + // enumerate all sixteen possibilities for (previousChar, nextChar) + // each can be one of {0, space, punct, other} + switch { + case previousChar == 0 && nextChar == 0: + // context is not any help here, so toggle + *isOpen = !*isOpen + case isspace(previousChar) && nextChar == 0: + // [ "] might be [ "foo...] + *isOpen = true + case ispunct(previousChar) && nextChar == 0: + // [!"] hmm... could be [Run!"] or [("...] + *isOpen = false + case /* isnormal(previousChar) && */ nextChar == 0: + // [a"] is probably a close + *isOpen = false + case previousChar == 0 && isspace(nextChar): + // [" ] might be [...foo" ] + *isOpen = false + case isspace(previousChar) && isspace(nextChar): + // [ " ] context is not any help here, so toggle + *isOpen = !*isOpen + case ispunct(previousChar) && isspace(nextChar): + // [!" ] is probably a close + *isOpen = false + case /* isnormal(previousChar) && */ isspace(nextChar): + // [a" ] this is one of the easy cases + *isOpen = false + case previousChar == 0 && ispunct(nextChar): + // ["!] hmm... could be ["$1.95] or ["!...] + *isOpen = false + case isspace(previousChar) && ispunct(nextChar): + // [ "!] looks more like [ "$1.95] + *isOpen = true + case ispunct(previousChar) && ispunct(nextChar): + // [!"!] context is not any help here, so toggle + *isOpen = !*isOpen + case /* isnormal(previousChar) && */ ispunct(nextChar): + // [a"!] is probably a close + *isOpen = false + case previousChar == 0 /* && isnormal(nextChar) */ : + // ["a] is probably an open + *isOpen = true + case isspace(previousChar) /* && isnormal(nextChar) */ : + // [ "a] this is one of the easy cases + *isOpen = true + case ispunct(previousChar) /* && isnormal(nextChar) */ : + // [!"a] is probably an open + *isOpen = true + default: + // [a'b] maybe a contraction? + *isOpen = false + } + + // Note that with the limited lookahead, this non-breaking + // space will also be appended to single double quotes. + if addNBSP && !*isOpen { + out.WriteString(" ") + } + + out.WriteByte('&') + if *isOpen { + out.WriteByte('l') + } else { + out.WriteByte('r') + } + out.WriteByte(quote) + out.WriteString("quo;") + + if addNBSP && *isOpen { + out.WriteString(" ") + } + + return true +} + +func (r *SPRenderer) smartSingleQuote(out *bytes.Buffer, previousChar byte, text []byte) int { + if len(text) >= 2 { + t1 := tolower(text[1]) + + if t1 == '\'' { + nextChar := byte(0) + if len(text) >= 3 { + nextChar = text[2] + } + if smartQuoteHelper(out, previousChar, nextChar, 'd', &r.inDoubleQuote, false) { + return 1 + } + } + + if (t1 == 's' || t1 == 't' || t1 == 'm' || t1 == 'd') && (len(text) < 3 || wordBoundary(text[2])) { + out.WriteString("’") + return 0 + } + + if len(text) >= 3 { + t2 := tolower(text[2]) + + if ((t1 == 'r' && t2 == 'e') || (t1 == 'l' && t2 == 'l') || (t1 == 'v' && t2 == 'e')) && + (len(text) < 4 || wordBoundary(text[3])) { + out.WriteString("’") + return 0 + } + } + } + + nextChar := byte(0) + if len(text) > 1 { + nextChar = text[1] + } + if smartQuoteHelper(out, previousChar, nextChar, 's', &r.inSingleQuote, false) { + return 0 + } + + out.WriteByte(text[0]) + return 0 +} + +func (r *SPRenderer) smartParens(out *bytes.Buffer, previousChar byte, text []byte) int { + if len(text) >= 3 { + t1 := tolower(text[1]) + t2 := tolower(text[2]) + + if t1 == 'c' && t2 == ')' { + out.WriteString("©") + return 2 + } + + if t1 == 'r' && t2 == ')' { + out.WriteString("®") + return 2 + } + + if len(text) >= 4 && t1 == 't' && t2 == 'm' && text[3] == ')' { + out.WriteString("™") + return 3 + } + } + + out.WriteByte(text[0]) + return 0 +} + +func (r *SPRenderer) smartDash(out *bytes.Buffer, previousChar byte, text []byte) int { + if len(text) >= 2 { + if text[1] == '-' { + out.WriteString("—") + return 1 + } + + if wordBoundary(previousChar) && wordBoundary(text[1]) { + out.WriteString("–") + return 0 + } + } + + out.WriteByte(text[0]) + return 0 +} + +func (r *SPRenderer) smartDashLatex(out *bytes.Buffer, previousChar byte, text []byte) int { + if len(text) >= 3 && text[1] == '-' && text[2] == '-' { + out.WriteString("—") + return 2 + } + if len(text) >= 2 && text[1] == '-' { + out.WriteString("–") + return 1 + } + + out.WriteByte(text[0]) + return 0 +} + +func (r *SPRenderer) smartAmpVariant(out *bytes.Buffer, previousChar byte, text []byte, quote byte, addNBSP bool) int { + if bytes.HasPrefix(text, []byte(""")) { + nextChar := byte(0) + if len(text) >= 7 { + nextChar = text[6] + } + if smartQuoteHelper(out, previousChar, nextChar, quote, &r.inDoubleQuote, addNBSP) { + return 5 + } + } + + if bytes.HasPrefix(text, []byte("�")) { + return 3 + } + + out.WriteByte('&') + return 0 +} + +func (r *SPRenderer) smartAmp(angledQuotes, addNBSP bool) func(*bytes.Buffer, byte, []byte) int { + var quote byte = 'd' + if angledQuotes { + quote = 'a' + } + + return func(out *bytes.Buffer, previousChar byte, text []byte) int { + return r.smartAmpVariant(out, previousChar, text, quote, addNBSP) + } +} + +func (r *SPRenderer) smartPeriod(out *bytes.Buffer, previousChar byte, text []byte) int { + if len(text) >= 3 && text[1] == '.' && text[2] == '.' { + out.WriteString("…") + return 2 + } + + if len(text) >= 5 && text[1] == ' ' && text[2] == '.' && text[3] == ' ' && text[4] == '.' { + out.WriteString("…") + return 4 + } + + out.WriteByte(text[0]) + return 0 +} + +func (r *SPRenderer) smartBacktick(out *bytes.Buffer, previousChar byte, text []byte) int { + if len(text) >= 2 && text[1] == '`' { + nextChar := byte(0) + if len(text) >= 3 { + nextChar = text[2] + } + if smartQuoteHelper(out, previousChar, nextChar, 'd', &r.inDoubleQuote, false) { + return 1 + } + } + + out.WriteByte(text[0]) + return 0 +} + +func (r *SPRenderer) smartNumberGeneric(out *bytes.Buffer, previousChar byte, text []byte) int { + if wordBoundary(previousChar) && previousChar != '/' && len(text) >= 3 { + // is it of the form digits/digits(word boundary)?, i.e., \d+/\d+\b + // note: check for regular slash (/) or fraction slash (⁄, 0x2044, or 0xe2 81 84 in utf-8) + // and avoid changing dates like 1/23/2005 into fractions. + numEnd := 0 + for len(text) > numEnd && isdigit(text[numEnd]) { + numEnd++ + } + if numEnd == 0 { + out.WriteByte(text[0]) + return 0 + } + denStart := numEnd + 1 + if len(text) > numEnd+3 && text[numEnd] == 0xe2 && text[numEnd+1] == 0x81 && text[numEnd+2] == 0x84 { + denStart = numEnd + 3 + } else if len(text) < numEnd+2 || text[numEnd] != '/' { + out.WriteByte(text[0]) + return 0 + } + denEnd := denStart + for len(text) > denEnd && isdigit(text[denEnd]) { + denEnd++ + } + if denEnd == denStart { + out.WriteByte(text[0]) + return 0 + } + if len(text) == denEnd || wordBoundary(text[denEnd]) && text[denEnd] != '/' { + out.WriteString("") + out.Write(text[:numEnd]) + out.WriteString("⁄") + out.Write(text[denStart:denEnd]) + out.WriteString("") + return denEnd - 1 + } + } + + out.WriteByte(text[0]) + return 0 +} + +func (r *SPRenderer) smartNumber(out *bytes.Buffer, previousChar byte, text []byte) int { + if wordBoundary(previousChar) && previousChar != '/' && len(text) >= 3 { + if text[0] == '1' && text[1] == '/' && text[2] == '2' { + if len(text) < 4 || wordBoundary(text[3]) && text[3] != '/' { + out.WriteString("½") + return 2 + } + } + + if text[0] == '1' && text[1] == '/' && text[2] == '4' { + if len(text) < 4 || wordBoundary(text[3]) && text[3] != '/' || (len(text) >= 5 && tolower(text[3]) == 't' && tolower(text[4]) == 'h') { + out.WriteString("¼") + return 2 + } + } + + if text[0] == '3' && text[1] == '/' && text[2] == '4' { + if len(text) < 4 || wordBoundary(text[3]) && text[3] != '/' || (len(text) >= 6 && tolower(text[3]) == 't' && tolower(text[4]) == 'h' && tolower(text[5]) == 's') { + out.WriteString("¾") + return 2 + } + } + } + + out.WriteByte(text[0]) + return 0 +} + +func (r *SPRenderer) smartDoubleQuoteVariant(out *bytes.Buffer, previousChar byte, text []byte, quote byte) int { + nextChar := byte(0) + if len(text) > 1 { + nextChar = text[1] + } + if !smartQuoteHelper(out, previousChar, nextChar, quote, &r.inDoubleQuote, false) { + out.WriteString(""") + } + + return 0 +} + +func (r *SPRenderer) smartDoubleQuote(out *bytes.Buffer, previousChar byte, text []byte) int { + return r.smartDoubleQuoteVariant(out, previousChar, text, 'd') +} + +func (r *SPRenderer) smartAngledDoubleQuote(out *bytes.Buffer, previousChar byte, text []byte) int { + return r.smartDoubleQuoteVariant(out, previousChar, text, 'a') +} + +func (r *SPRenderer) smartLeftAngle(out *bytes.Buffer, previousChar byte, text []byte) int { + i := 0 + + for i < len(text) && text[i] != '>' { + i++ + } + + out.Write(text[:i+1]) + return i +} + +type smartCallback func(out *bytes.Buffer, previousChar byte, text []byte) int + +// NewSmartypantsRenderer constructs a Smartypants renderer object. +func NewSmartypantsRenderer(flags HTMLFlags) *SPRenderer { + var ( + r SPRenderer + + smartAmpAngled = r.smartAmp(true, false) + smartAmpAngledNBSP = r.smartAmp(true, true) + smartAmpRegular = r.smartAmp(false, false) + smartAmpRegularNBSP = r.smartAmp(false, true) + + addNBSP = flags&SmartypantsQuotesNBSP != 0 + ) + + if flags&SmartypantsAngledQuotes == 0 { + r.callbacks['"'] = r.smartDoubleQuote + if !addNBSP { + r.callbacks['&'] = smartAmpRegular + } else { + r.callbacks['&'] = smartAmpRegularNBSP + } + } else { + r.callbacks['"'] = r.smartAngledDoubleQuote + if !addNBSP { + r.callbacks['&'] = smartAmpAngled + } else { + r.callbacks['&'] = smartAmpAngledNBSP + } + } + r.callbacks['\''] = r.smartSingleQuote + r.callbacks['('] = r.smartParens + if flags&SmartypantsDashes != 0 { + if flags&SmartypantsLatexDashes == 0 { + r.callbacks['-'] = r.smartDash + } else { + r.callbacks['-'] = r.smartDashLatex + } + } + r.callbacks['.'] = r.smartPeriod + if flags&SmartypantsFractions == 0 { + r.callbacks['1'] = r.smartNumber + r.callbacks['3'] = r.smartNumber + } else { + for ch := '1'; ch <= '9'; ch++ { + r.callbacks[ch] = r.smartNumberGeneric + } + } + r.callbacks['<'] = r.smartLeftAngle + r.callbacks['`'] = r.smartBacktick + return &r +} + +// Process is the entry point of the Smartypants renderer. +func (r *SPRenderer) Process(w io.Writer, text []byte) { + mark := 0 + for i := 0; i < len(text); i++ { + if action := r.callbacks[text[i]]; action != nil { + if i > mark { + w.Write(text[mark:i]) + } + previousChar := byte(0) + if i > 0 { + previousChar = text[i-1] + } + var tmp bytes.Buffer + i += action(&tmp, previousChar, text[i:]) + w.Write(tmp.Bytes()) + mark = i + 1 + } + } + if mark < len(text) { + w.Write(text[mark:]) + } +} diff --git a/vendor/github.com/spf13/cobra/.gitignore b/vendor/github.com/spf13/cobra/.gitignore index 3b053c59e..c7b459e4d 100644 --- a/vendor/github.com/spf13/cobra/.gitignore +++ b/vendor/github.com/spf13/cobra/.gitignore @@ -32,7 +32,8 @@ Session.vim tags *.exe - cobra.test +bin -.idea/* +.idea/ +*.iml diff --git a/vendor/github.com/spf13/cobra/.golangci.yml b/vendor/github.com/spf13/cobra/.golangci.yml new file mode 100644 index 000000000..439d3e1de --- /dev/null +++ b/vendor/github.com/spf13/cobra/.golangci.yml @@ -0,0 +1,62 @@ +# Copyright 2013-2022 The Cobra Authors +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +run: + deadline: 5m + +linters: + disable-all: true + enable: + #- bodyclose + - deadcode + #- depguard + #- dogsled + #- dupl + - errcheck + #- exhaustive + #- funlen + - gas + #- gochecknoinits + - goconst + #- gocritic + #- gocyclo + #- gofmt + - goimports + - golint + #- gomnd + #- goprintffuncname + #- gosec + #- gosimple + - govet + - ineffassign + - interfacer + #- lll + - maligned + - megacheck + #- misspell + #- nakedret + #- noctx + #- nolintlint + #- rowserrcheck + #- scopelint + #- staticcheck + - structcheck + #- stylecheck + #- typecheck + - unconvert + #- unparam + #- unused + - varcheck + #- whitespace + fast: false diff --git a/vendor/github.com/spf13/cobra/.travis.yml b/vendor/github.com/spf13/cobra/.travis.yml deleted file mode 100644 index 38b85f499..000000000 --- a/vendor/github.com/spf13/cobra/.travis.yml +++ /dev/null @@ -1,31 +0,0 @@ -language: go - -stages: - - diff - - test - -go: - - 1.10.x - - 1.11.x - - 1.12.x - - tip - -matrix: - allow_failures: - - go: tip - include: - - stage: diff - go: 1.12.x - script: diff -u <(echo -n) <(gofmt -d -s .) - -before_install: - - mkdir -p bin - - curl -Lso bin/shellcheck https://github.com/caarlos0/shellcheck-docker/releases/download/v0.6.0/shellcheck - - chmod +x bin/shellcheck - - go get -u github.com/kyoh86/richgo -script: - - PATH=$PATH:$PWD/bin richgo test -v ./... - - go build - - if [ -z $NOVET ]; then - diff -u <(echo -n) <(go vet . 2>&1 | grep -vE 'ExampleCommand|bash_completions.*Fprint'); - fi diff --git a/vendor/github.com/spf13/cobra/CONDUCT.md b/vendor/github.com/spf13/cobra/CONDUCT.md new file mode 100644 index 000000000..9d16f88fd --- /dev/null +++ b/vendor/github.com/spf13/cobra/CONDUCT.md @@ -0,0 +1,37 @@ +## Cobra User Contract + +### Versioning +Cobra will follow a steady release cadence. Non breaking changes will be released as minor versions quarterly. Patch bug releases are at the discretion of the maintainers. Users can expect security patch fixes to be released within relatively short order of a CVE becoming known. For more information on security patch fixes see the CVE section below. Releases will follow [Semantic Versioning](https://semver.org/). Users tracking the Master branch should expect unpredictable breaking changes as the project continues to move forward. For stability, it is highly recommended to use a release. + +### Backward Compatibility +We will maintain two major releases in a moving window. The N-1 release will only receive bug fixes and security updates and will be dropped once N+1 is released. + +### Deprecation +Deprecation of Go versions or dependent packages will only occur in major releases. To reduce the change of this taking users by surprise, any large deprecation will be preceded by an announcement in the [#cobra slack channel](https://gophers.slack.com/archives/CD3LP1199) and an Issue on Github. + +### CVE +Maintainers will make every effort to release security patches in the case of a medium to high severity CVE directly impacting the library. The speed in which these patches reach a release is up to the discretion of the maintainers. A low severity CVE may be a lower priority than a high severity one. + +### Communication +Cobra maintainers will use GitHub issues and the [#cobra slack channel](https://gophers.slack.com/archives/CD3LP1199) as the primary means of communication with the community. This is to foster open communication with all users and contributors. + +### Breaking Changes +Breaking changes are generally allowed in the master branch, as this is the branch used to develop the next release of Cobra. + +There may be times, however, when master is closed for breaking changes. This is likely to happen as we near the release of a new version. + +Breaking changes are not allowed in release branches, as these represent minor versions that have already been released. These version have consumers who expect the APIs, behaviors, etc, to remain stable during the lifetime of the patch stream for the minor release. + +Examples of breaking changes include: +- Removing or renaming exported constant, variable, type, or function. +- Updating the version of critical libraries such as `spf13/pflag`, `spf13/viper` etc... + - Some version updates may be acceptable for picking up bug fixes, but maintainers must exercise caution when reviewing. + +There may, at times, need to be exceptions where breaking changes are allowed in release branches. These are at the discretion of the project's maintainers, and must be carefully considered before merging. + +### CI Testing +Maintainers will ensure the Cobra test suite utilizes the current supported versions of Golang. + +### Disclaimer +Changes to this document and the contents therein are at the discretion of the maintainers. +None of the contents of this document are legally binding in any way to the maintainers or the users. diff --git a/vendor/github.com/spf13/cobra/CONTRIBUTING.md b/vendor/github.com/spf13/cobra/CONTRIBUTING.md new file mode 100644 index 000000000..6f356e6a8 --- /dev/null +++ b/vendor/github.com/spf13/cobra/CONTRIBUTING.md @@ -0,0 +1,50 @@ +# Contributing to Cobra + +Thank you so much for contributing to Cobra. We appreciate your time and help. +Here are some guidelines to help you get started. + +## Code of Conduct + +Be kind and respectful to the members of the community. Take time to educate +others who are seeking help. Harassment of any kind will not be tolerated. + +## Questions + +If you have questions regarding Cobra, feel free to ask it in the community +[#cobra Slack channel][cobra-slack] + +## Filing a bug or feature + +1. Before filing an issue, please check the existing issues to see if a + similar one was already opened. If there is one already opened, feel free + to comment on it. +1. If you believe you've found a bug, please provide detailed steps of + reproduction, the version of Cobra and anything else you believe will be + useful to help troubleshoot it (e.g. OS environment, environment variables, + etc...). Also state the current behavior vs. the expected behavior. +1. If you'd like to see a feature or an enhancement please open an issue with + a clear title and description of what the feature is and why it would be + beneficial to the project and its users. + +## Submitting changes + +1. CLA: Upon submitting a Pull Request (PR), contributors will be prompted to + sign a CLA. Please sign the CLA :slightly_smiling_face: +1. Tests: If you are submitting code, please ensure you have adequate tests + for the feature. Tests can be run via `go test ./...` or `make test`. +1. Since this is golang project, ensure the new code is properly formatted to + ensure code consistency. Run `make all`. + +### Quick steps to contribute + +1. Fork the project. +1. Download your fork to your PC (`git clone https://github.com/your_username/cobra && cd cobra`) +1. Create your feature branch (`git checkout -b my-new-feature`) +1. Make changes and run tests (`make test`) +1. Add them to staging (`git add .`) +1. Commit your changes (`git commit -m 'Add some feature'`) +1. Push to the branch (`git push origin my-new-feature`) +1. Create new pull request + + +[cobra-slack]: https://gophers.slack.com/archives/CD3LP1199 diff --git a/vendor/github.com/spf13/cobra/MAINTAINERS b/vendor/github.com/spf13/cobra/MAINTAINERS new file mode 100644 index 000000000..4c5ac3dd9 --- /dev/null +++ b/vendor/github.com/spf13/cobra/MAINTAINERS @@ -0,0 +1,13 @@ +maintainers: +- spf13 +- johnSchnake +- jpmcb +- marckhouzam +inactive: +- anthonyfok +- bep +- bogem +- broady +- eparis +- jharshman +- wfernandes diff --git a/vendor/github.com/spf13/cobra/Makefile b/vendor/github.com/spf13/cobra/Makefile new file mode 100644 index 000000000..c433a01bc --- /dev/null +++ b/vendor/github.com/spf13/cobra/Makefile @@ -0,0 +1,35 @@ +BIN="./bin" +SRC=$(shell find . -name "*.go") + +ifeq (, $(shell which golangci-lint)) +$(warning "could not find golangci-lint in $(PATH), run: curl -sfL https://install.goreleaser.com/github.com/golangci/golangci-lint.sh | sh") +endif + +ifeq (, $(shell which richgo)) +$(warning "could not find richgo in $(PATH), run: go install github.com/kyoh86/richgo@latest") +endif + +.PHONY: fmt lint test install_deps clean + +default: all + +all: fmt test + +fmt: + $(info ******************** checking formatting ********************) + @test -z $(shell gofmt -l $(SRC)) || (gofmt -d $(SRC); exit 1) + +lint: + $(info ******************** running lint tools ********************) + golangci-lint run -v + +test: install_deps + $(info ******************** running tests ********************) + richgo test -v ./... + +install_deps: + $(info ******************** downloading dependencies ********************) + go get -v ./... + +clean: + rm -rf $(BIN) diff --git a/vendor/github.com/spf13/cobra/README.md b/vendor/github.com/spf13/cobra/README.md index 60c5a425b..7cc726beb 100644 --- a/vendor/github.com/spf13/cobra/README.md +++ b/vendor/github.com/spf13/cobra/README.md @@ -1,80 +1,35 @@ ![cobra logo](https://cloud.githubusercontent.com/assets/173412/10886352/ad566232-814f-11e5-9cd0-aa101788c117.png) -Cobra is both a library for creating powerful modern CLI applications as well as a program to generate applications and command files. - -Many of the most widely used Go projects are built using Cobra, such as: -[Kubernetes](http://kubernetes.io/), -[Hugo](http://gohugo.io), -[rkt](https://github.com/coreos/rkt), -[etcd](https://github.com/coreos/etcd), -[Moby (former Docker)](https://github.com/moby/moby), -[Docker (distribution)](https://github.com/docker/distribution), -[OpenShift](https://www.openshift.com/), -[Delve](https://github.com/derekparker/delve), -[GopherJS](http://www.gopherjs.org/), -[CockroachDB](http://www.cockroachlabs.com/), -[Bleve](http://www.blevesearch.com/), -[ProjectAtomic (enterprise)](http://www.projectatomic.io/), -[Giant Swarm's gsctl](https://github.com/giantswarm/gsctl), -[Nanobox](https://github.com/nanobox-io/nanobox)/[Nanopack](https://github.com/nanopack), -[rclone](http://rclone.org/), -[nehm](https://github.com/bogem/nehm), -[Pouch](https://github.com/alibaba/pouch), -[Istio](https://istio.io), -[Prototool](https://github.com/uber/prototool), -[mattermost-server](https://github.com/mattermost/mattermost-server), -[Gardener](https://github.com/gardener/gardenctl), -etc. - -[![Build Status](https://travis-ci.org/spf13/cobra.svg "Travis CI status")](https://travis-ci.org/spf13/cobra) -[![CircleCI status](https://circleci.com/gh/spf13/cobra.png?circle-token=:circle-token "CircleCI status")](https://circleci.com/gh/spf13/cobra) -[![GoDoc](https://godoc.org/github.com/spf13/cobra?status.svg)](https://godoc.org/github.com/spf13/cobra) - -# Table of Contents - -- [Overview](#overview) -- [Concepts](#concepts) - * [Commands](#commands) - * [Flags](#flags) -- [Installing](#installing) -- [Getting Started](#getting-started) - * [Using the Cobra Generator](#using-the-cobra-generator) - * [Using the Cobra Library](#using-the-cobra-library) - * [Working with Flags](#working-with-flags) - * [Positional and Custom Arguments](#positional-and-custom-arguments) - * [Example](#example) - * [Help Command](#help-command) - * [Usage Message](#usage-message) - * [PreRun and PostRun Hooks](#prerun-and-postrun-hooks) - * [Suggestions when "unknown command" happens](#suggestions-when-unknown-command-happens) - * [Generating documentation for your command](#generating-documentation-for-your-command) - * [Generating bash completions](#generating-bash-completions) - * [Generating zsh completions](#generating-zsh-completions) -- [Contributing](#contributing) -- [License](#license) +Cobra is a library for creating powerful modern CLI applications. + +Cobra is used in many Go projects such as [Kubernetes](https://kubernetes.io/), +[Hugo](https://gohugo.io), and [GitHub CLI](https://github.com/cli/cli) to +name a few. [This list](./projects_using_cobra.md) contains a more extensive list of projects using Cobra. + +[![](https://img.shields.io/github/workflow/status/spf13/cobra/Test?longCache=tru&label=Test&logo=github%20actions&logoColor=fff)](https://github.com/spf13/cobra/actions?query=workflow%3ATest) +[![Go Reference](https://pkg.go.dev/badge/github.com/spf13/cobra.svg)](https://pkg.go.dev/github.com/spf13/cobra) +[![Go Report Card](https://goreportcard.com/badge/github.com/spf13/cobra)](https://goreportcard.com/report/github.com/spf13/cobra) +[![Slack](https://img.shields.io/badge/Slack-cobra-brightgreen)](https://gophers.slack.com/archives/CD3LP1199) # Overview Cobra is a library providing a simple interface to create powerful modern CLI interfaces similar to git & go tools. -Cobra is also an application that will generate your application scaffolding to rapidly -develop a Cobra-based application. - Cobra provides: * Easy subcommand-based CLIs: `app server`, `app fetch`, etc. * Fully POSIX-compliant flags (including short & long versions) * Nested subcommands * Global, local and cascading flags -* Easy generation of applications & commands with `cobra init appname` & `cobra add cmdname` * Intelligent suggestions (`app srver`... did you mean `app server`?) * Automatic help generation for commands and flags +* Grouping help for subcommands * Automatic help flag recognition of `-h`, `--help`, etc. -* Automatically generated bash autocomplete for your application +* Automatically generated shell autocomplete for your application (bash, zsh, fish, powershell) * Automatically generated man pages for your application * Command aliases so you can change things without breaking them * The flexibility to define your own help, usage, etc. -* Optional tight integration with [viper](http://github.com/spf13/viper) for 12-factor apps +* Optional seamless integration with [viper](https://github.com/spf13/viper) for 12-factor apps # Concepts @@ -82,13 +37,13 @@ Cobra is built on a structure of commands, arguments & flags. **Commands** represent actions, **Args** are things and **Flags** are modifiers for those actions. -The best applications will read like sentences when used. Users will know how -to use the application because they will natively understand how to use it. +The best applications read like sentences when used, and as a result, users +intuitively know how to interact with them. The pattern to follow is -`APPNAME VERB NOUN --ADJECTIVE.` +`APPNAME VERB NOUN --ADJECTIVE` or -`APPNAME COMMAND ARG --FLAG` +`APPNAME COMMAND ARG --FLAG`. A few good real world examples may better illustrate this point. @@ -108,7 +63,7 @@ have children commands and optionally run an action. In the example above, 'server' is the command. -[More about cobra.Command](https://godoc.org/github.com/spf13/cobra#Command) +[More about cobra.Command](https://pkg.go.dev/github.com/spf13/cobra#Command) ## Flags @@ -125,616 +80,32 @@ which maintains the same interface while adding POSIX compliance. # Installing Using Cobra is easy. First, use `go get` to install the latest version -of the library. This command will install the `cobra` generator executable -along with the library and its dependencies: - - go get -u github.com/spf13/cobra/cobra - -Next, include Cobra in your application: +of the library. -```go -import "github.com/spf13/cobra" ``` - -# Getting Started - -While you are welcome to provide your own organization, typically a Cobra-based -application will follow the following organizational structure: - +go get -u github.com/spf13/cobra@latest ``` - ▾ appName/ - ▾ cmd/ - add.go - your.go - commands.go - here.go - main.go -``` - -In a Cobra app, typically the main.go file is very bare. It serves one purpose: initializing Cobra. - -```go -package main - -import ( - "{pathToYourApp}/cmd" -) - -func main() { - cmd.Execute() -} -``` - -## Using the Cobra Generator - -Cobra provides its own program that will create your application and add any -commands you want. It's the easiest way to incorporate Cobra into your application. - -[Here](https://github.com/spf13/cobra/blob/master/cobra/README.md) you can find more information about it. -## Using the Cobra Library - -To manually implement Cobra you need to create a bare main.go file and a rootCmd file. -You will optionally provide additional commands as you see fit. - -### Create rootCmd - -Cobra doesn't require any special constructors. Simply create your commands. - -Ideally you place this in app/cmd/root.go: - -```go -var rootCmd = &cobra.Command{ - Use: "hugo", - Short: "Hugo is a very fast static site generator", - Long: `A Fast and Flexible Static Site Generator built with - love by spf13 and friends in Go. - Complete documentation is available at http://hugo.spf13.com`, - Run: func(cmd *cobra.Command, args []string) { - // Do Stuff Here - }, -} - -func Execute() { - if err := rootCmd.Execute(); err != nil { - fmt.Println(err) - os.Exit(1) - } -} -``` - -You will additionally define flags and handle configuration in your init() function. - -For example cmd/root.go: - -```go -import ( - "fmt" - "os" - - homedir "github.com/mitchellh/go-homedir" - "github.com/spf13/cobra" - "github.com/spf13/viper" -) - -func init() { - cobra.OnInitialize(initConfig) - rootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", "config file (default is $HOME/.cobra.yaml)") - rootCmd.PersistentFlags().StringVarP(&projectBase, "projectbase", "b", "", "base project directory eg. github.com/spf13/") - rootCmd.PersistentFlags().StringP("author", "a", "YOUR NAME", "Author name for copyright attribution") - rootCmd.PersistentFlags().StringVarP(&userLicense, "license", "l", "", "Name of license for the project (can provide `licensetext` in config)") - rootCmd.PersistentFlags().Bool("viper", true, "Use Viper for configuration") - viper.BindPFlag("author", rootCmd.PersistentFlags().Lookup("author")) - viper.BindPFlag("projectbase", rootCmd.PersistentFlags().Lookup("projectbase")) - viper.BindPFlag("useViper", rootCmd.PersistentFlags().Lookup("viper")) - viper.SetDefault("author", "NAME HERE ") - viper.SetDefault("license", "apache") -} - -func initConfig() { - // Don't forget to read config either from cfgFile or from home directory! - if cfgFile != "" { - // Use config file from the flag. - viper.SetConfigFile(cfgFile) - } else { - // Find home directory. - home, err := homedir.Dir() - if err != nil { - fmt.Println(err) - os.Exit(1) - } - - // Search config in home directory with name ".cobra" (without extension). - viper.AddConfigPath(home) - viper.SetConfigName(".cobra") - } - - if err := viper.ReadInConfig(); err != nil { - fmt.Println("Can't read config:", err) - os.Exit(1) - } -} -``` - -### Create your main.go - -With the root command you need to have your main function execute it. -Execute should be run on the root for clarity, though it can be called on any command. - -In a Cobra app, typically the main.go file is very bare. It serves, one purpose, to initialize Cobra. - -```go -package main - -import ( - "{pathToYourApp}/cmd" -) - -func main() { - cmd.Execute() -} -``` - -### Create additional commands - -Additional commands can be defined and typically are each given their own file -inside of the cmd/ directory. - -If you wanted to create a version command you would create cmd/version.go and -populate it with the following: - -```go -package cmd - -import ( - "fmt" - - "github.com/spf13/cobra" -) - -func init() { - rootCmd.AddCommand(versionCmd) -} - -var versionCmd = &cobra.Command{ - Use: "version", - Short: "Print the version number of Hugo", - Long: `All software has versions. This is Hugo's`, - Run: func(cmd *cobra.Command, args []string) { - fmt.Println("Hugo Static Site Generator v0.9 -- HEAD") - }, -} -``` - -## Working with Flags - -Flags provide modifiers to control how the action command operates. - -### Assign flags to a command - -Since the flags are defined and used in different locations, we need to -define a variable outside with the correct scope to assign the flag to -work with. - -```go -var Verbose bool -var Source string -``` - -There are two different approaches to assign a flag. - -### Persistent Flags - -A flag can be 'persistent' meaning that this flag will be available to the -command it's assigned to as well as every command under that command. For -global flags, assign a flag as a persistent flag on the root. - -```go -rootCmd.PersistentFlags().BoolVarP(&Verbose, "verbose", "v", false, "verbose output") -``` - -### Local Flags - -A flag can also be assigned locally which will only apply to that specific command. - -```go -localCmd.Flags().StringVarP(&Source, "source", "s", "", "Source directory to read from") -``` - -### Local Flag on Parent Commands - -By default Cobra only parses local flags on the target command, any local flags on -parent commands are ignored. By enabling `Command.TraverseChildren` Cobra will -parse local flags on each command before executing the target command. - -```go -command := cobra.Command{ - Use: "print [OPTIONS] [COMMANDS]", - TraverseChildren: true, -} -``` - -### Bind Flags with Config - -You can also bind your flags with [viper](https://github.com/spf13/viper): -```go -var author string - -func init() { - rootCmd.PersistentFlags().StringVar(&author, "author", "YOUR NAME", "Author name for copyright attribution") - viper.BindPFlag("author", rootCmd.PersistentFlags().Lookup("author")) -} -``` - -In this example the persistent flag `author` is bound with `viper`. -**Note**, that the variable `author` will not be set to the value from config, -when the `--author` flag is not provided by user. - -More in [viper documentation](https://github.com/spf13/viper#working-with-flags). - -### Required flags - -Flags are optional by default. If instead you wish your command to report an error -when a flag has not been set, mark it as required: -```go -rootCmd.Flags().StringVarP(&Region, "region", "r", "", "AWS region (required)") -rootCmd.MarkFlagRequired("region") -``` - -## Positional and Custom Arguments - -Validation of positional arguments can be specified using the `Args` field -of `Command`. - -The following validators are built in: - -- `NoArgs` - the command will report an error if there are any positional args. -- `ArbitraryArgs` - the command will accept any args. -- `OnlyValidArgs` - the command will report an error if there are any positional args that are not in the `ValidArgs` field of `Command`. -- `MinimumNArgs(int)` - the command will report an error if there are not at least N positional args. -- `MaximumNArgs(int)` - the command will report an error if there are more than N positional args. -- `ExactArgs(int)` - the command will report an error if there are not exactly N positional args. -- `ExactValidArgs(int)` - the command will report an error if there are not exactly N positional args OR if there are any positional args that are not in the `ValidArgs` field of `Command` -- `RangeArgs(min, max)` - the command will report an error if the number of args is not between the minimum and maximum number of expected args. - -An example of setting the custom validator: - -```go -var cmd = &cobra.Command{ - Short: "hello", - Args: func(cmd *cobra.Command, args []string) error { - if len(args) < 1 { - return errors.New("requires a color argument") - } - if myapp.IsValidColor(args[0]) { - return nil - } - return fmt.Errorf("invalid color specified: %s", args[0]) - }, - Run: func(cmd *cobra.Command, args []string) { - fmt.Println("Hello, World!") - }, -} -``` - -## Example - -In the example below, we have defined three commands. Two are at the top level -and one (cmdTimes) is a child of one of the top commands. In this case the root -is not executable meaning that a subcommand is required. This is accomplished -by not providing a 'Run' for the 'rootCmd'. - -We have only defined one flag for a single command. - -More documentation about flags is available at https://github.com/spf13/pflag - -```go -package main - -import ( - "fmt" - "strings" - - "github.com/spf13/cobra" -) - -func main() { - var echoTimes int - - var cmdPrint = &cobra.Command{ - Use: "print [string to print]", - Short: "Print anything to the screen", - Long: `print is for printing anything back to the screen. -For many years people have printed back to the screen.`, - Args: cobra.MinimumNArgs(1), - Run: func(cmd *cobra.Command, args []string) { - fmt.Println("Print: " + strings.Join(args, " ")) - }, - } - - var cmdEcho = &cobra.Command{ - Use: "echo [string to echo]", - Short: "Echo anything to the screen", - Long: `echo is for echoing anything back. -Echo works a lot like print, except it has a child command.`, - Args: cobra.MinimumNArgs(1), - Run: func(cmd *cobra.Command, args []string) { - fmt.Println("Print: " + strings.Join(args, " ")) - }, - } - - var cmdTimes = &cobra.Command{ - Use: "times [string to echo]", - Short: "Echo anything to the screen more times", - Long: `echo things multiple times back to the user by providing -a count and a string.`, - Args: cobra.MinimumNArgs(1), - Run: func(cmd *cobra.Command, args []string) { - for i := 0; i < echoTimes; i++ { - fmt.Println("Echo: " + strings.Join(args, " ")) - } - }, - } - - cmdTimes.Flags().IntVarP(&echoTimes, "times", "t", 1, "times to echo the input") - - var rootCmd = &cobra.Command{Use: "app"} - rootCmd.AddCommand(cmdPrint, cmdEcho) - cmdEcho.AddCommand(cmdTimes) - rootCmd.Execute() -} -``` - -For a more complete example of a larger application, please checkout [Hugo](http://gohugo.io/). - -## Help Command - -Cobra automatically adds a help command to your application when you have subcommands. -This will be called when a user runs 'app help'. Additionally, help will also -support all other commands as input. Say, for instance, you have a command called -'create' without any additional configuration; Cobra will work when 'app help -create' is called. Every command will automatically have the '--help' flag added. - -### Example - -The following output is automatically generated by Cobra. Nothing beyond the -command and flag definitions are needed. - - $ cobra help - - Cobra is a CLI library for Go that empowers applications. - This application is a tool to generate the needed files - to quickly create a Cobra application. - - Usage: - cobra [command] - - Available Commands: - add Add a command to a Cobra Application - help Help about any command - init Initialize a Cobra Application - - Flags: - -a, --author string author name for copyright attribution (default "YOUR NAME") - --config string config file (default is $HOME/.cobra.yaml) - -h, --help help for cobra - -l, --license string name of license for the project - --viper use Viper for configuration (default true) - - Use "cobra [command] --help" for more information about a command. - - -Help is just a command like any other. There is no special logic or behavior -around it. In fact, you can provide your own if you want. - -### Defining your own help - -You can provide your own Help command or your own template for the default command to use -with following functions: - -```go -cmd.SetHelpCommand(cmd *Command) -cmd.SetHelpFunc(f func(*Command, []string)) -cmd.SetHelpTemplate(s string) -``` - -The latter two will also apply to any children commands. - -## Usage Message - -When the user provides an invalid flag or invalid command, Cobra responds by -showing the user the 'usage'. - -### Example -You may recognize this from the help above. That's because the default help -embeds the usage as part of its output. - - $ cobra --invalid - Error: unknown flag: --invalid - Usage: - cobra [command] - - Available Commands: - add Add a command to a Cobra Application - help Help about any command - init Initialize a Cobra Application - - Flags: - -a, --author string author name for copyright attribution (default "YOUR NAME") - --config string config file (default is $HOME/.cobra.yaml) - -h, --help help for cobra - -l, --license string name of license for the project - --viper use Viper for configuration (default true) - - Use "cobra [command] --help" for more information about a command. - -### Defining your own usage -You can provide your own usage function or template for Cobra to use. -Like help, the function and template are overridable through public methods: - -```go -cmd.SetUsageFunc(f func(*Command) error) -cmd.SetUsageTemplate(s string) -``` - -## Version Flag - -Cobra adds a top-level '--version' flag if the Version field is set on the root command. -Running an application with the '--version' flag will print the version to stdout using -the version template. The template can be customized using the -`cmd.SetVersionTemplate(s string)` function. - -## PreRun and PostRun Hooks - -It is possible to run functions before or after the main `Run` function of your command. The `PersistentPreRun` and `PreRun` functions will be executed before `Run`. `PersistentPostRun` and `PostRun` will be executed after `Run`. The `Persistent*Run` functions will be inherited by children if they do not declare their own. These functions are run in the following order: - -- `PersistentPreRun` -- `PreRun` -- `Run` -- `PostRun` -- `PersistentPostRun` - -An example of two commands which use all of these features is below. When the subcommand is executed, it will run the root command's `PersistentPreRun` but not the root command's `PersistentPostRun`: - -```go -package main - -import ( - "fmt" - - "github.com/spf13/cobra" -) - -func main() { - - var rootCmd = &cobra.Command{ - Use: "root [sub]", - Short: "My root command", - PersistentPreRun: func(cmd *cobra.Command, args []string) { - fmt.Printf("Inside rootCmd PersistentPreRun with args: %v\n", args) - }, - PreRun: func(cmd *cobra.Command, args []string) { - fmt.Printf("Inside rootCmd PreRun with args: %v\n", args) - }, - Run: func(cmd *cobra.Command, args []string) { - fmt.Printf("Inside rootCmd Run with args: %v\n", args) - }, - PostRun: func(cmd *cobra.Command, args []string) { - fmt.Printf("Inside rootCmd PostRun with args: %v\n", args) - }, - PersistentPostRun: func(cmd *cobra.Command, args []string) { - fmt.Printf("Inside rootCmd PersistentPostRun with args: %v\n", args) - }, - } - - var subCmd = &cobra.Command{ - Use: "sub [no options!]", - Short: "My subcommand", - PreRun: func(cmd *cobra.Command, args []string) { - fmt.Printf("Inside subCmd PreRun with args: %v\n", args) - }, - Run: func(cmd *cobra.Command, args []string) { - fmt.Printf("Inside subCmd Run with args: %v\n", args) - }, - PostRun: func(cmd *cobra.Command, args []string) { - fmt.Printf("Inside subCmd PostRun with args: %v\n", args) - }, - PersistentPostRun: func(cmd *cobra.Command, args []string) { - fmt.Printf("Inside subCmd PersistentPostRun with args: %v\n", args) - }, - } - - rootCmd.AddCommand(subCmd) - - rootCmd.SetArgs([]string{""}) - rootCmd.Execute() - fmt.Println() - rootCmd.SetArgs([]string{"sub", "arg1", "arg2"}) - rootCmd.Execute() -} -``` - -Output: -``` -Inside rootCmd PersistentPreRun with args: [] -Inside rootCmd PreRun with args: [] -Inside rootCmd Run with args: [] -Inside rootCmd PostRun with args: [] -Inside rootCmd PersistentPostRun with args: [] - -Inside rootCmd PersistentPreRun with args: [arg1 arg2] -Inside subCmd PreRun with args: [arg1 arg2] -Inside subCmd Run with args: [arg1 arg2] -Inside subCmd PostRun with args: [arg1 arg2] -Inside subCmd PersistentPostRun with args: [arg1 arg2] -``` - -## Suggestions when "unknown command" happens - -Cobra will print automatic suggestions when "unknown command" errors happen. This allows Cobra to behave similarly to the `git` command when a typo happens. For example: - -``` -$ hugo srever -Error: unknown command "srever" for "hugo" - -Did you mean this? - server - -Run 'hugo --help' for usage. -``` - -Suggestions are automatic based on every subcommand registered and use an implementation of [Levenshtein distance](http://en.wikipedia.org/wiki/Levenshtein_distance). Every registered command that matches a minimum distance of 2 (ignoring case) will be displayed as a suggestion. - -If you need to disable suggestions or tweak the string distance in your command, use: +Next, include Cobra in your application: ```go -command.DisableSuggestions = true +import "github.com/spf13/cobra" ``` -or - -```go -command.SuggestionsMinimumDistance = 1 -``` +# Usage +`cobra-cli` is a command line program to generate cobra applications and command files. +It will bootstrap your application scaffolding to rapidly +develop a Cobra-based application. It is the easiest way to incorporate Cobra into your application. -You can also explicitly set names for which a given command will be suggested using the `SuggestFor` attribute. This allows suggestions for strings that are not close in terms of string distance, but makes sense in your set of commands and for some which you don't want aliases. Example: +It can be installed by running: ``` -$ kubectl remove -Error: unknown command "remove" for "kubectl" - -Did you mean this? - delete - -Run 'kubectl help' for usage. +go install github.com/spf13/cobra-cli@latest ``` -## Generating documentation for your command - -Cobra can generate documentation based on subcommands, flags, etc. in the following formats: - -- [Markdown](doc/md_docs.md) -- [ReStructured Text](doc/rest_docs.md) -- [Man Page](doc/man_docs.md) - -## Generating bash completions - -Cobra can generate a bash-completion file. If you add more information to your command, these completions can be amazingly powerful and flexible. Read more about it in [Bash Completions](bash_completions.md). - -## Generating zsh completions - -Cobra can generate zsh-completion file. Read more about it in -[Zsh Completions](zsh_completions.md). - -# Contributing +For complete details on using the Cobra-CLI generator, please read [The Cobra Generator README](https://github.com/spf13/cobra-cli/blob/main/README.md) -1. Fork it -2. Download your fork to your PC (`git clone https://github.com/your_username/cobra && cd cobra`) -3. Create your feature branch (`git checkout -b my-new-feature`) -4. Make changes and add them (`git add .`) -5. Commit your changes (`git commit -m 'Add some feature'`) -6. Push to the branch (`git push origin my-new-feature`) -7. Create new pull request +For complete details on using the Cobra library, please read the [The Cobra User Guide](user_guide.md). # License diff --git a/vendor/github.com/spf13/cobra/active_help.go b/vendor/github.com/spf13/cobra/active_help.go new file mode 100644 index 000000000..95e03aecb --- /dev/null +++ b/vendor/github.com/spf13/cobra/active_help.go @@ -0,0 +1,63 @@ +// Copyright 2013-2022 The Cobra Authors +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package cobra + +import ( + "fmt" + "os" + "strings" +) + +const ( + activeHelpMarker = "_activeHelp_ " + // The below values should not be changed: programs will be using them explicitly + // in their user documentation, and users will be using them explicitly. + activeHelpEnvVarSuffix = "_ACTIVE_HELP" + activeHelpGlobalEnvVar = "COBRA_ACTIVE_HELP" + activeHelpGlobalDisable = "0" +) + +// AppendActiveHelp adds the specified string to the specified array to be used as ActiveHelp. +// Such strings will be processed by the completion script and will be shown as ActiveHelp +// to the user. +// The array parameter should be the array that will contain the completions. +// This function can be called multiple times before and/or after completions are added to +// the array. Each time this function is called with the same array, the new +// ActiveHelp line will be shown below the previous ones when completion is triggered. +func AppendActiveHelp(compArray []string, activeHelpStr string) []string { + return append(compArray, fmt.Sprintf("%s%s", activeHelpMarker, activeHelpStr)) +} + +// GetActiveHelpConfig returns the value of the ActiveHelp environment variable +// _ACTIVE_HELP where is the name of the root command in upper +// case, with all - replaced by _. +// It will always return "0" if the global environment variable COBRA_ACTIVE_HELP +// is set to "0". +func GetActiveHelpConfig(cmd *Command) string { + activeHelpCfg := os.Getenv(activeHelpGlobalEnvVar) + if activeHelpCfg != activeHelpGlobalDisable { + activeHelpCfg = os.Getenv(activeHelpEnvVar(cmd.Root().Name())) + } + return activeHelpCfg +} + +// activeHelpEnvVar returns the name of the program-specific ActiveHelp environment +// variable. It has the format _ACTIVE_HELP where is the name of the +// root command in upper case, with all - replaced by _. +func activeHelpEnvVar(name string) string { + // This format should not be changed: users will be using it explicitly. + activeHelpEnvVar := strings.ToUpper(fmt.Sprintf("%s%s", name, activeHelpEnvVarSuffix)) + return strings.ReplaceAll(activeHelpEnvVar, "-", "_") +} diff --git a/vendor/github.com/spf13/cobra/active_help.md b/vendor/github.com/spf13/cobra/active_help.md new file mode 100644 index 000000000..5e7f59af3 --- /dev/null +++ b/vendor/github.com/spf13/cobra/active_help.md @@ -0,0 +1,157 @@ +# Active Help + +Active Help is a framework provided by Cobra which allows a program to define messages (hints, warnings, etc) that will be printed during program usage. It aims to make it easier for your users to learn how to use your program. If configured by the program, Active Help is printed when the user triggers shell completion. + +For example, +``` +bash-5.1$ helm repo add [tab] +You must choose a name for the repo you are adding. + +bash-5.1$ bin/helm package [tab] +Please specify the path to the chart to package + +bash-5.1$ bin/helm package [tab][tab] +bin/ internal/ scripts/ pkg/ testdata/ +``` + +**Hint**: A good place to use Active Help messages is when the normal completion system does not provide any suggestions. In such cases, Active Help nicely supplements the normal shell completions to guide the user in knowing what is expected by the program. +## Supported shells + +Active Help is currently only supported for the following shells: +- Bash (using [bash completion V2](shell_completions.md#bash-completion-v2) only). Note that bash 4.4 or higher is required for the prompt to appear when an Active Help message is printed. +- Zsh + +## Adding Active Help messages + +As Active Help uses the shell completion system, the implementation of Active Help messages is done by enhancing custom dynamic completions. If you are not familiar with dynamic completions, please refer to [Shell Completions](shell_completions.md). + +Adding Active Help is done through the use of the `cobra.AppendActiveHelp(...)` function, where the program repeatedly adds Active Help messages to the list of completions. Keep reading for details. + +### Active Help for nouns + +Adding Active Help when completing a noun is done within the `ValidArgsFunction(...)` of a command. Please notice the use of `cobra.AppendActiveHelp(...)` in the following example: + +```go +cmd := &cobra.Command{ + Use: "add [NAME] [URL]", + Short: "add a chart repository", + Args: require.ExactArgs(2), + RunE: func(cmd *cobra.Command, args []string) error { + return addRepo(args) + }, + ValidArgsFunction: func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) { + var comps []string + if len(args) == 0 { + comps = cobra.AppendActiveHelp(comps, "You must choose a name for the repo you are adding") + } else if len(args) == 1 { + comps = cobra.AppendActiveHelp(comps, "You must specify the URL for the repo you are adding") + } else { + comps = cobra.AppendActiveHelp(comps, "This command does not take any more arguments") + } + return comps, cobra.ShellCompDirectiveNoFileComp + }, +} +``` +The example above defines the completions (none, in this specific example) as well as the Active Help messages for the `helm repo add` command. It yields the following behavior: +``` +bash-5.1$ helm repo add [tab] +You must choose a name for the repo you are adding + +bash-5.1$ helm repo add grafana [tab] +You must specify the URL for the repo you are adding + +bash-5.1$ helm repo add grafana https://grafana.github.io/helm-charts [tab] +This command does not take any more arguments +``` +**Hint**: As can be seen in the above example, a good place to use Active Help messages is when the normal completion system does not provide any suggestions. In such cases, Active Help nicely supplements the normal shell completions. + +### Active Help for flags + +Providing Active Help for flags is done in the same fashion as for nouns, but using the completion function registered for the flag. For example: +```go +_ = cmd.RegisterFlagCompletionFunc("version", func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) { + if len(args) != 2 { + return cobra.AppendActiveHelp(nil, "You must first specify the chart to install before the --version flag can be completed"), cobra.ShellCompDirectiveNoFileComp + } + return compVersionFlag(args[1], toComplete) + }) +``` +The example above prints an Active Help message when not enough information was given by the user to complete the `--version` flag. +``` +bash-5.1$ bin/helm install myrelease --version 2.0.[tab] +You must first specify the chart to install before the --version flag can be completed + +bash-5.1$ bin/helm install myrelease bitnami/solr --version 2.0.[tab][tab] +2.0.1 2.0.2 2.0.3 +``` + +## User control of Active Help + +You may want to allow your users to disable Active Help or choose between different levels of Active Help. It is entirely up to the program to define the type of configurability of Active Help that it wants to offer, if any. +Allowing to configure Active Help is entirely optional; you can use Active Help in your program without doing anything about Active Help configuration. + +The way to configure Active Help is to use the program's Active Help environment +variable. That variable is named `_ACTIVE_HELP` where `` is the name of your +program in uppercase with any `-` replaced by an `_`. The variable should be set by the user to whatever +Active Help configuration values are supported by the program. + +For example, say `helm` has chosen to support three levels for Active Help: `on`, `off`, `local`. Then a user +would set the desired behavior to `local` by doing `export HELM_ACTIVE_HELP=local` in their shell. + +For simplicity, when in `cmd.ValidArgsFunction(...)` or a flag's completion function, the program should read the +Active Help configuration using the `cobra.GetActiveHelpConfig(cmd)` function and select what Active Help messages +should or should not be added (instead of reading the environment variable directly). + +For example: +```go +ValidArgsFunction: func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) { + activeHelpLevel := cobra.GetActiveHelpConfig(cmd) + + var comps []string + if len(args) == 0 { + if activeHelpLevel != "off" { + comps = cobra.AppendActiveHelp(comps, "You must choose a name for the repo you are adding") + } + } else if len(args) == 1 { + if activeHelpLevel != "off" { + comps = cobra.AppendActiveHelp(comps, "You must specify the URL for the repo you are adding") + } + } else { + if activeHelpLevel == "local" { + comps = cobra.AppendActiveHelp(comps, "This command does not take any more arguments") + } + } + return comps, cobra.ShellCompDirectiveNoFileComp +}, +``` +**Note 1**: If the `_ACTIVE_HELP` environment variable is set to the string "0", Cobra will automatically disable all Active Help output (even if some output was specified by the program using the `cobra.AppendActiveHelp(...)` function). Using "0" can simplify your code in situations where you want to blindly disable Active Help without having to call `cobra.GetActiveHelpConfig(cmd)` explicitly. + +**Note 2**: If a user wants to disable Active Help for every single program based on Cobra, she can set the environment variable `COBRA_ACTIVE_HELP` to "0". In this case `cobra.GetActiveHelpConfig(cmd)` will return "0" no matter what the variable `_ACTIVE_HELP` is set to. + +**Note 3**: If the user does not set `_ACTIVE_HELP` or `COBRA_ACTIVE_HELP` (which will be a common case), the default value for the Active Help configuration returned by `cobra.GetActiveHelpConfig(cmd)` will be the empty string. +## Active Help with Cobra's default completion command + +Cobra provides a default `completion` command for programs that wish to use it. +When using the default `completion` command, Active Help is configurable in the same +fashion as described above using environment variables. You may wish to document this in more +details for your users. + +## Debugging Active Help + +Debugging your Active Help code is done in the same way as debugging your dynamic completion code, which is with Cobra's hidden `__complete` command. Please refer to [debugging shell completion](shell_completions.md#debugging) for details. + +When debugging with the `__complete` command, if you want to specify different Active Help configurations, you should use the active help environment variable. That variable is named `_ACTIVE_HELP` where any `-` is replaced by an `_`. For example, we can test deactivating some Active Help as shown below: +``` +$ HELM_ACTIVE_HELP=1 bin/helm __complete install wordpress bitnami/h +bitnami/haproxy +bitnami/harbor +_activeHelp_ WARNING: cannot re-use a name that is still in use +:0 +Completion ended with directive: ShellCompDirectiveDefault + +$ HELM_ACTIVE_HELP=0 bin/helm __complete install wordpress bitnami/h +bitnami/haproxy +bitnami/harbor +:0 +Completion ended with directive: ShellCompDirectiveDefault +``` diff --git a/vendor/github.com/spf13/cobra/args.go b/vendor/github.com/spf13/cobra/args.go index c4d820b85..2c1f99e78 100644 --- a/vendor/github.com/spf13/cobra/args.go +++ b/vendor/github.com/spf13/cobra/args.go @@ -1,7 +1,22 @@ +// Copyright 2013-2022 The Cobra Authors +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + package cobra import ( "fmt" + "strings" ) type PositionalArgs func(cmd *Command, args []string) error @@ -31,11 +46,18 @@ func NoArgs(cmd *Command, args []string) error { return nil } -// OnlyValidArgs returns an error if any args are not in the list of ValidArgs. +// OnlyValidArgs returns an error if there are any positional args that are not in +// the `ValidArgs` field of `Command` func OnlyValidArgs(cmd *Command, args []string) error { if len(cmd.ValidArgs) > 0 { + // Remove any description that may be included in ValidArgs. + // A description is following a tab character. + var validArgs []string + for _, v := range cmd.ValidArgs { + validArgs = append(validArgs, strings.Split(v, "\t")[0]) + } for _, v := range args { - if !stringInSlice(v, cmd.ValidArgs) { + if !stringInSlice(v, validArgs) { return fmt.Errorf("invalid argument %q for %q%s", v, cmd.CommandPath(), cmd.findSuggestions(args[0])) } } @@ -78,24 +100,32 @@ func ExactArgs(n int) PositionalArgs { } } -// ExactValidArgs returns an error if -// there are not exactly N positional args OR -// there are any positional args that are not in the `ValidArgs` field of `Command` -func ExactValidArgs(n int) PositionalArgs { +// RangeArgs returns an error if the number of args is not within the expected range. +func RangeArgs(min int, max int) PositionalArgs { return func(cmd *Command, args []string) error { - if err := ExactArgs(n)(cmd, args); err != nil { - return err + if len(args) < min || len(args) > max { + return fmt.Errorf("accepts between %d and %d arg(s), received %d", min, max, len(args)) } - return OnlyValidArgs(cmd, args) + return nil } } -// RangeArgs returns an error if the number of args is not within the expected range. -func RangeArgs(min int, max int) PositionalArgs { +// MatchAll allows combining several PositionalArgs to work in concert. +func MatchAll(pargs ...PositionalArgs) PositionalArgs { return func(cmd *Command, args []string) error { - if len(args) < min || len(args) > max { - return fmt.Errorf("accepts between %d and %d arg(s), received %d", min, max, len(args)) + for _, parg := range pargs { + if err := parg(cmd, args); err != nil { + return err + } } return nil } } + +// ExactValidArgs returns an error if there are not exactly N positional args OR +// there are any positional args that are not in the `ValidArgs` field of `Command` +// +// Deprecated: use MatchAll(ExactArgs(n), OnlyValidArgs) instead +func ExactValidArgs(n int) PositionalArgs { + return MatchAll(ExactArgs(n), OnlyValidArgs) +} diff --git a/vendor/github.com/spf13/cobra/bash_completions.go b/vendor/github.com/spf13/cobra/bash_completions.go index 57bb8e1b3..3acdb2797 100644 --- a/vendor/github.com/spf13/cobra/bash_completions.go +++ b/vendor/github.com/spf13/cobra/bash_completions.go @@ -1,3 +1,17 @@ +// Copyright 2013-2022 The Cobra Authors +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + package cobra import ( @@ -19,12 +33,12 @@ const ( BashCompSubdirsInDir = "cobra_annotation_bash_completion_subdirs_in_dir" ) -func writePreamble(buf *bytes.Buffer, name string) { - buf.WriteString(fmt.Sprintf("# bash completion for %-36s -*- shell-script -*-\n", name)) - buf.WriteString(fmt.Sprintf(` +func writePreamble(buf io.StringWriter, name string) { + WriteStringAndCheck(buf, fmt.Sprintf("# bash completion for %-36s -*- shell-script -*-\n", name)) + WriteStringAndCheck(buf, fmt.Sprintf(` __%[1]s_debug() { - if [[ -n ${BASH_COMP_DEBUG_FILE} ]]; then + if [[ -n ${BASH_COMP_DEBUG_FILE:-} ]]; then echo "$*" >> "${BASH_COMP_DEBUG_FILE}" fi } @@ -58,9 +72,104 @@ __%[1]s_contains_word() return 1 } +__%[1]s_handle_go_custom_completion() +{ + __%[1]s_debug "${FUNCNAME[0]}: cur is ${cur}, words[*] is ${words[*]}, #words[@] is ${#words[@]}" + + local shellCompDirectiveError=%[3]d + local shellCompDirectiveNoSpace=%[4]d + local shellCompDirectiveNoFileComp=%[5]d + local shellCompDirectiveFilterFileExt=%[6]d + local shellCompDirectiveFilterDirs=%[7]d + + local out requestComp lastParam lastChar comp directive args + + # Prepare the command to request completions for the program. + # Calling ${words[0]} instead of directly %[1]s allows to handle aliases + args=("${words[@]:1}") + # Disable ActiveHelp which is not supported for bash completion v1 + requestComp="%[8]s=0 ${words[0]} %[2]s ${args[*]}" + + lastParam=${words[$((${#words[@]}-1))]} + lastChar=${lastParam:$((${#lastParam}-1)):1} + __%[1]s_debug "${FUNCNAME[0]}: lastParam ${lastParam}, lastChar ${lastChar}" + + if [ -z "${cur}" ] && [ "${lastChar}" != "=" ]; then + # If the last parameter is complete (there is a space following it) + # We add an extra empty parameter so we can indicate this to the go method. + __%[1]s_debug "${FUNCNAME[0]}: Adding extra empty parameter" + requestComp="${requestComp} \"\"" + fi + + __%[1]s_debug "${FUNCNAME[0]}: calling ${requestComp}" + # Use eval to handle any environment variables and such + out=$(eval "${requestComp}" 2>/dev/null) + + # Extract the directive integer at the very end of the output following a colon (:) + directive=${out##*:} + # Remove the directive + out=${out%%:*} + if [ "${directive}" = "${out}" ]; then + # There is not directive specified + directive=0 + fi + __%[1]s_debug "${FUNCNAME[0]}: the completion directive is: ${directive}" + __%[1]s_debug "${FUNCNAME[0]}: the completions are: ${out}" + + if [ $((directive & shellCompDirectiveError)) -ne 0 ]; then + # Error code. No completion. + __%[1]s_debug "${FUNCNAME[0]}: received error from custom completion go code" + return + else + if [ $((directive & shellCompDirectiveNoSpace)) -ne 0 ]; then + if [[ $(type -t compopt) = "builtin" ]]; then + __%[1]s_debug "${FUNCNAME[0]}: activating no space" + compopt -o nospace + fi + fi + if [ $((directive & shellCompDirectiveNoFileComp)) -ne 0 ]; then + if [[ $(type -t compopt) = "builtin" ]]; then + __%[1]s_debug "${FUNCNAME[0]}: activating no file completion" + compopt +o default + fi + fi + fi + + if [ $((directive & shellCompDirectiveFilterFileExt)) -ne 0 ]; then + # File extension filtering + local fullFilter filter filteringCmd + # Do not use quotes around the $out variable or else newline + # characters will be kept. + for filter in ${out}; do + fullFilter+="$filter|" + done + + filteringCmd="_filedir $fullFilter" + __%[1]s_debug "File filtering command: $filteringCmd" + $filteringCmd + elif [ $((directive & shellCompDirectiveFilterDirs)) -ne 0 ]; then + # File completion for directories only + local subdir + # Use printf to strip any trailing newline + subdir=$(printf "%%s" "${out}") + if [ -n "$subdir" ]; then + __%[1]s_debug "Listing directories in $subdir" + __%[1]s_handle_subdirs_in_dir_flag "$subdir" + else + __%[1]s_debug "Listing directories in ." + _filedir -d + fi + else + while IFS='' read -r comp; do + COMPREPLY+=("$comp") + done < <(compgen -W "${out}" -- "$cur") + fi +} + __%[1]s_handle_reply() { __%[1]s_debug "${FUNCNAME[0]}" + local comp case $cur in -*) if [[ $(type -t compopt) = "builtin" ]]; then @@ -72,7 +181,9 @@ __%[1]s_handle_reply() else allflags=("${flags[*]} ${two_word_flags[*]}") fi - COMPREPLY=( $(compgen -W "${allflags[*]}" -- "$cur") ) + while IFS='' read -r comp; do + COMPREPLY+=("$comp") + done < <(compgen -W "${allflags[*]}" -- "$cur") if [[ $(type -t compopt) = "builtin" ]]; then [[ "${COMPREPLY[0]}" == *= ]] || compopt +o nospace fi @@ -91,13 +202,19 @@ __%[1]s_handle_reply() PREFIX="" cur="${cur#*=}" ${flags_completion[${index}]} - if [ -n "${ZSH_VERSION}" ]; then + if [ -n "${ZSH_VERSION:-}" ]; then # zsh completion needs --flag= prefix eval "COMPREPLY=( \"\${COMPREPLY[@]/#/${flag}=}\" )" fi fi fi - return 0; + + if [[ -z "${flag_parsing_disabled}" ]]; then + # If flag parsing is enabled, we have completed the flags and can return. + # If flag parsing is disabled, we may not know all (or any) of the flags, so we fallthrough + # to possibly call handle_go_custom_completion. + return 0; + fi ;; esac @@ -117,25 +234,32 @@ __%[1]s_handle_reply() local completions completions=("${commands[@]}") if [[ ${#must_have_one_noun[@]} -ne 0 ]]; then - completions=("${must_have_one_noun[@]}") + completions+=("${must_have_one_noun[@]}") + elif [[ -n "${has_completion_function}" ]]; then + # if a go completion function is provided, defer to that function + __%[1]s_handle_go_custom_completion fi if [[ ${#must_have_one_flag[@]} -ne 0 ]]; then completions+=("${must_have_one_flag[@]}") fi - COMPREPLY=( $(compgen -W "${completions[*]}" -- "$cur") ) + while IFS='' read -r comp; do + COMPREPLY+=("$comp") + done < <(compgen -W "${completions[*]}" -- "$cur") if [[ ${#COMPREPLY[@]} -eq 0 && ${#noun_aliases[@]} -gt 0 && ${#must_have_one_noun[@]} -ne 0 ]]; then - COMPREPLY=( $(compgen -W "${noun_aliases[*]}" -- "$cur") ) + while IFS='' read -r comp; do + COMPREPLY+=("$comp") + done < <(compgen -W "${noun_aliases[*]}" -- "$cur") fi if [[ ${#COMPREPLY[@]} -eq 0 ]]; then - if declare -F __%[1]s_custom_func >/dev/null; then - # try command name qualified custom func - __%[1]s_custom_func - else - # otherwise fall back to unqualified for compatibility - declare -F __custom_func >/dev/null && __custom_func - fi + if declare -F __%[1]s_custom_func >/dev/null; then + # try command name qualified custom func + __%[1]s_custom_func + else + # otherwise fall back to unqualified for compatibility + declare -F __custom_func >/dev/null && __custom_func + fi fi # available in bash-completion >= 2, not always present on macOS @@ -160,7 +284,7 @@ __%[1]s_handle_filename_extension_flag() __%[1]s_handle_subdirs_in_dir_flag() { local dir="$1" - pushd "${dir}" >/dev/null 2>&1 && _filedir -d && popd >/dev/null 2>&1 + pushd "${dir}" >/dev/null 2>&1 && _filedir -d && popd >/dev/null 2>&1 || return } __%[1]s_handle_flag() @@ -169,7 +293,7 @@ __%[1]s_handle_flag() # if a command required a flag, and we found it, unset must_have_one_flag() local flagname=${words[c]} - local flagvalue + local flagvalue="" # if the word contained an = if [[ ${words[c]} == *"="* ]]; then flagvalue=${flagname#*=} # take in as flagvalue after the = @@ -188,7 +312,7 @@ __%[1]s_handle_flag() # keep flag value with flagname as flaghash # flaghash variable is an associative array which is only supported in bash > 3. - if [[ -z "${BASH_VERSION}" || "${BASH_VERSINFO[0]}" -gt 3 ]]; then + if [[ -z "${BASH_VERSION:-}" || "${BASH_VERSINFO[0]:-}" -gt 3 ]]; then if [ -n "${flagvalue}" ] ; then flaghash[${flagname}]=${flagvalue} elif [ -n "${words[ $((c+1)) ]}" ] ; then @@ -200,7 +324,7 @@ __%[1]s_handle_flag() # skip the argument to a two word flag if [[ ${words[c]} != *"="* ]] && __%[1]s_contains_word "${words[c]}" "${two_word_flags[@]}"; then - __%[1]s_debug "${FUNCNAME[0]}: found a flag ${words[c]}, skip the next argument" + __%[1]s_debug "${FUNCNAME[0]}: found a flag ${words[c]}, skip the next argument" c=$((c+1)) # if we are looking for a flags value, don't show commands if [[ $c -eq $cword ]]; then @@ -260,7 +384,7 @@ __%[1]s_handle_word() __%[1]s_handle_command elif __%[1]s_contains_word "${words[c]}" "${command_aliases[@]}"; then # aliashash variable is an associative array which is only supported in bash > 3. - if [[ -z "${BASH_VERSION}" || "${BASH_VERSINFO[0]}" -gt 3 ]]; then + if [[ -z "${BASH_VERSION:-}" || "${BASH_VERSINFO[0]:-}" -gt 3 ]]; then words[c]=${aliashash[${words[c]}]} __%[1]s_handle_command else @@ -272,14 +396,16 @@ __%[1]s_handle_word() __%[1]s_handle_word } -`, name)) +`, name, ShellCompNoDescRequestCmd, + ShellCompDirectiveError, ShellCompDirectiveNoSpace, ShellCompDirectiveNoFileComp, + ShellCompDirectiveFilterFileExt, ShellCompDirectiveFilterDirs, activeHelpEnvVar(name))) } -func writePostscript(buf *bytes.Buffer, name string) { - name = strings.Replace(name, ":", "__", -1) - buf.WriteString(fmt.Sprintf("__start_%s()\n", name)) - buf.WriteString(fmt.Sprintf(`{ - local cur prev words cword +func writePostscript(buf io.StringWriter, name string) { + name = strings.ReplaceAll(name, ":", "__") + WriteStringAndCheck(buf, fmt.Sprintf("__start_%s()\n", name)) + WriteStringAndCheck(buf, fmt.Sprintf(`{ + local cur prev words cword split declare -A flaghash 2>/dev/null || : declare -A aliashash 2>/dev/null || : if declare -F _init_completion >/dev/null 2>&1; then @@ -289,48 +415,52 @@ func writePostscript(buf *bytes.Buffer, name string) { fi local c=0 + local flag_parsing_disabled= local flags=() local two_word_flags=() local local_nonpersistent_flags=() local flags_with_completion=() local flags_completion=() local commands=("%[1]s") + local command_aliases=() local must_have_one_flag=() local must_have_one_noun=() - local last_command + local has_completion_function="" + local last_command="" local nouns=() + local noun_aliases=() __%[1]s_handle_word } `, name)) - buf.WriteString(fmt.Sprintf(`if [[ $(type -t compopt) = "builtin" ]]; then + WriteStringAndCheck(buf, fmt.Sprintf(`if [[ $(type -t compopt) = "builtin" ]]; then complete -o default -F __start_%s %s else complete -o default -o nospace -F __start_%s %s fi `, name, name, name, name)) - buf.WriteString("# ex: ts=4 sw=4 et filetype=sh\n") + WriteStringAndCheck(buf, "# ex: ts=4 sw=4 et filetype=sh\n") } -func writeCommands(buf *bytes.Buffer, cmd *Command) { - buf.WriteString(" commands=()\n") +func writeCommands(buf io.StringWriter, cmd *Command) { + WriteStringAndCheck(buf, " commands=()\n") for _, c := range cmd.Commands() { - if !c.IsAvailableCommand() || c == cmd.helpCommand { + if !c.IsAvailableCommand() && c != cmd.helpCommand { continue } - buf.WriteString(fmt.Sprintf(" commands+=(%q)\n", c.Name())) + WriteStringAndCheck(buf, fmt.Sprintf(" commands+=(%q)\n", c.Name())) writeCmdAliases(buf, c) } - buf.WriteString("\n") + WriteStringAndCheck(buf, "\n") } -func writeFlagHandler(buf *bytes.Buffer, name string, annotations map[string][]string, cmd *Command) { +func writeFlagHandler(buf io.StringWriter, name string, annotations map[string][]string, cmd *Command) { for key, value := range annotations { switch key { case BashCompFilenameExt: - buf.WriteString(fmt.Sprintf(" flags_with_completion+=(%q)\n", name)) + WriteStringAndCheck(buf, fmt.Sprintf(" flags_with_completion+=(%q)\n", name)) var ext string if len(value) > 0 { @@ -338,17 +468,18 @@ func writeFlagHandler(buf *bytes.Buffer, name string, annotations map[string][]s } else { ext = "_filedir" } - buf.WriteString(fmt.Sprintf(" flags_completion+=(%q)\n", ext)) + WriteStringAndCheck(buf, fmt.Sprintf(" flags_completion+=(%q)\n", ext)) case BashCompCustom: - buf.WriteString(fmt.Sprintf(" flags_with_completion+=(%q)\n", name)) + WriteStringAndCheck(buf, fmt.Sprintf(" flags_with_completion+=(%q)\n", name)) + if len(value) > 0 { handlers := strings.Join(value, "; ") - buf.WriteString(fmt.Sprintf(" flags_completion+=(%q)\n", handlers)) + WriteStringAndCheck(buf, fmt.Sprintf(" flags_completion+=(%q)\n", handlers)) } else { - buf.WriteString(" flags_completion+=(:)\n") + WriteStringAndCheck(buf, " flags_completion+=(:)\n") } case BashCompSubdirsInDir: - buf.WriteString(fmt.Sprintf(" flags_with_completion+=(%q)\n", name)) + WriteStringAndCheck(buf, fmt.Sprintf(" flags_with_completion+=(%q)\n", name)) var ext string if len(value) == 1 { @@ -356,55 +487,81 @@ func writeFlagHandler(buf *bytes.Buffer, name string, annotations map[string][]s } else { ext = "_filedir -d" } - buf.WriteString(fmt.Sprintf(" flags_completion+=(%q)\n", ext)) + WriteStringAndCheck(buf, fmt.Sprintf(" flags_completion+=(%q)\n", ext)) } } } -func writeShortFlag(buf *bytes.Buffer, flag *pflag.Flag, cmd *Command) { +const cbn = "\")\n" + +func writeShortFlag(buf io.StringWriter, flag *pflag.Flag, cmd *Command) { name := flag.Shorthand format := " " if len(flag.NoOptDefVal) == 0 { format += "two_word_" } - format += "flags+=(\"-%s\")\n" - buf.WriteString(fmt.Sprintf(format, name)) + format += "flags+=(\"-%s" + cbn + WriteStringAndCheck(buf, fmt.Sprintf(format, name)) writeFlagHandler(buf, "-"+name, flag.Annotations, cmd) } -func writeFlag(buf *bytes.Buffer, flag *pflag.Flag, cmd *Command) { +func writeFlag(buf io.StringWriter, flag *pflag.Flag, cmd *Command) { name := flag.Name format := " flags+=(\"--%s" if len(flag.NoOptDefVal) == 0 { format += "=" } - format += "\")\n" - buf.WriteString(fmt.Sprintf(format, name)) + format += cbn + WriteStringAndCheck(buf, fmt.Sprintf(format, name)) if len(flag.NoOptDefVal) == 0 { - format = " two_word_flags+=(\"--%s\")\n" - buf.WriteString(fmt.Sprintf(format, name)) + format = " two_word_flags+=(\"--%s" + cbn + WriteStringAndCheck(buf, fmt.Sprintf(format, name)) } writeFlagHandler(buf, "--"+name, flag.Annotations, cmd) } -func writeLocalNonPersistentFlag(buf *bytes.Buffer, flag *pflag.Flag) { +func writeLocalNonPersistentFlag(buf io.StringWriter, flag *pflag.Flag) { name := flag.Name - format := " local_nonpersistent_flags+=(\"--%s" + format := " local_nonpersistent_flags+=(\"--%[1]s" + cbn if len(flag.NoOptDefVal) == 0 { - format += "=" + format += " local_nonpersistent_flags+=(\"--%[1]s=" + cbn + } + WriteStringAndCheck(buf, fmt.Sprintf(format, name)) + if len(flag.Shorthand) > 0 { + WriteStringAndCheck(buf, fmt.Sprintf(" local_nonpersistent_flags+=(\"-%s\")\n", flag.Shorthand)) + } +} + +// Setup annotations for go completions for registered flags +func prepareCustomAnnotationsForFlags(cmd *Command) { + flagCompletionMutex.RLock() + defer flagCompletionMutex.RUnlock() + for flag := range flagCompletionFunctions { + // Make sure the completion script calls the __*_go_custom_completion function for + // every registered flag. We need to do this here (and not when the flag was registered + // for completion) so that we can know the root command name for the prefix + // of ___go_custom_completion + if flag.Annotations == nil { + flag.Annotations = map[string][]string{} + } + flag.Annotations[BashCompCustom] = []string{fmt.Sprintf("__%[1]s_handle_go_custom_completion", cmd.Root().Name())} } - format += "\")\n" - buf.WriteString(fmt.Sprintf(format, name)) } -func writeFlags(buf *bytes.Buffer, cmd *Command) { - buf.WriteString(` flags=() +func writeFlags(buf io.StringWriter, cmd *Command) { + prepareCustomAnnotationsForFlags(cmd) + WriteStringAndCheck(buf, ` flags=() two_word_flags=() local_nonpersistent_flags=() flags_with_completion=() flags_completion=() `) + + if cmd.DisableFlagParsing { + WriteStringAndCheck(buf, " flag_parsing_disabled=1\n") + } + localNonPersistentFlags := cmd.LocalNonPersistentFlags() cmd.NonInheritedFlags().VisitAll(func(flag *pflag.Flag) { if nonCompletableFlag(flag) { @@ -414,7 +571,9 @@ func writeFlags(buf *bytes.Buffer, cmd *Command) { if len(flag.Shorthand) > 0 { writeShortFlag(buf, flag, cmd) } - if localNonPersistentFlags.Lookup(flag.Name) != nil { + // localNonPersistentFlags are used to stop the completion of subcommands when one is set + // if TraverseChildren is true we should allow to complete subcommands + if localNonPersistentFlags.Lookup(flag.Name) != nil && !cmd.Root().TraverseChildren { writeLocalNonPersistentFlag(buf, flag) } }) @@ -428,11 +587,11 @@ func writeFlags(buf *bytes.Buffer, cmd *Command) { } }) - buf.WriteString("\n") + WriteStringAndCheck(buf, "\n") } -func writeRequiredFlag(buf *bytes.Buffer, cmd *Command) { - buf.WriteString(" must_have_one_flag=()\n") +func writeRequiredFlag(buf io.StringWriter, cmd *Command) { + WriteStringAndCheck(buf, " must_have_one_flag=()\n") flags := cmd.NonInheritedFlags() flags.VisitAll(func(flag *pflag.Flag) { if nonCompletableFlag(flag) { @@ -445,76 +604,82 @@ func writeRequiredFlag(buf *bytes.Buffer, cmd *Command) { if flag.Value.Type() != "bool" { format += "=" } - format += "\")\n" - buf.WriteString(fmt.Sprintf(format, flag.Name)) + format += cbn + WriteStringAndCheck(buf, fmt.Sprintf(format, flag.Name)) if len(flag.Shorthand) > 0 { - buf.WriteString(fmt.Sprintf(" must_have_one_flag+=(\"-%s\")\n", flag.Shorthand)) + WriteStringAndCheck(buf, fmt.Sprintf(" must_have_one_flag+=(\"-%s"+cbn, flag.Shorthand)) } } } }) } -func writeRequiredNouns(buf *bytes.Buffer, cmd *Command) { - buf.WriteString(" must_have_one_noun=()\n") - sort.Sort(sort.StringSlice(cmd.ValidArgs)) +func writeRequiredNouns(buf io.StringWriter, cmd *Command) { + WriteStringAndCheck(buf, " must_have_one_noun=()\n") + sort.Strings(cmd.ValidArgs) for _, value := range cmd.ValidArgs { - buf.WriteString(fmt.Sprintf(" must_have_one_noun+=(%q)\n", value)) + // Remove any description that may be included following a tab character. + // Descriptions are not supported by bash completion. + value = strings.Split(value, "\t")[0] + WriteStringAndCheck(buf, fmt.Sprintf(" must_have_one_noun+=(%q)\n", value)) + } + if cmd.ValidArgsFunction != nil { + WriteStringAndCheck(buf, " has_completion_function=1\n") } } -func writeCmdAliases(buf *bytes.Buffer, cmd *Command) { +func writeCmdAliases(buf io.StringWriter, cmd *Command) { if len(cmd.Aliases) == 0 { return } - sort.Sort(sort.StringSlice(cmd.Aliases)) + sort.Strings(cmd.Aliases) - buf.WriteString(fmt.Sprint(` if [[ -z "${BASH_VERSION}" || "${BASH_VERSINFO[0]}" -gt 3 ]]; then`, "\n")) + WriteStringAndCheck(buf, fmt.Sprint(` if [[ -z "${BASH_VERSION:-}" || "${BASH_VERSINFO[0]:-}" -gt 3 ]]; then`, "\n")) for _, value := range cmd.Aliases { - buf.WriteString(fmt.Sprintf(" command_aliases+=(%q)\n", value)) - buf.WriteString(fmt.Sprintf(" aliashash[%q]=%q\n", value, cmd.Name())) + WriteStringAndCheck(buf, fmt.Sprintf(" command_aliases+=(%q)\n", value)) + WriteStringAndCheck(buf, fmt.Sprintf(" aliashash[%q]=%q\n", value, cmd.Name())) } - buf.WriteString(` fi`) - buf.WriteString("\n") + WriteStringAndCheck(buf, ` fi`) + WriteStringAndCheck(buf, "\n") } -func writeArgAliases(buf *bytes.Buffer, cmd *Command) { - buf.WriteString(" noun_aliases=()\n") - sort.Sort(sort.StringSlice(cmd.ArgAliases)) +func writeArgAliases(buf io.StringWriter, cmd *Command) { + WriteStringAndCheck(buf, " noun_aliases=()\n") + sort.Strings(cmd.ArgAliases) for _, value := range cmd.ArgAliases { - buf.WriteString(fmt.Sprintf(" noun_aliases+=(%q)\n", value)) + WriteStringAndCheck(buf, fmt.Sprintf(" noun_aliases+=(%q)\n", value)) } } -func gen(buf *bytes.Buffer, cmd *Command) { +func gen(buf io.StringWriter, cmd *Command) { for _, c := range cmd.Commands() { - if !c.IsAvailableCommand() || c == cmd.helpCommand { + if !c.IsAvailableCommand() && c != cmd.helpCommand { continue } gen(buf, c) } commandName := cmd.CommandPath() - commandName = strings.Replace(commandName, " ", "_", -1) - commandName = strings.Replace(commandName, ":", "__", -1) + commandName = strings.ReplaceAll(commandName, " ", "_") + commandName = strings.ReplaceAll(commandName, ":", "__") if cmd.Root() == cmd { - buf.WriteString(fmt.Sprintf("_%s_root_command()\n{\n", commandName)) + WriteStringAndCheck(buf, fmt.Sprintf("_%s_root_command()\n{\n", commandName)) } else { - buf.WriteString(fmt.Sprintf("_%s()\n{\n", commandName)) + WriteStringAndCheck(buf, fmt.Sprintf("_%s()\n{\n", commandName)) } - buf.WriteString(fmt.Sprintf(" last_command=%q\n", commandName)) - buf.WriteString("\n") - buf.WriteString(" command_aliases=()\n") - buf.WriteString("\n") + WriteStringAndCheck(buf, fmt.Sprintf(" last_command=%q\n", commandName)) + WriteStringAndCheck(buf, "\n") + WriteStringAndCheck(buf, " command_aliases=()\n") + WriteStringAndCheck(buf, "\n") writeCommands(buf, cmd) writeFlags(buf, cmd) writeRequiredFlag(buf, cmd) writeRequiredNouns(buf, cmd) writeArgAliases(buf, cmd) - buf.WriteString("}\n\n") + WriteStringAndCheck(buf, "}\n\n") } // GenBashCompletion generates bash completion file and writes to the passed writer. diff --git a/vendor/github.com/spf13/cobra/bash_completions.md b/vendor/github.com/spf13/cobra/bash_completions.md index 4ac61ee13..52919b2fa 100644 --- a/vendor/github.com/spf13/cobra/bash_completions.md +++ b/vendor/github.com/spf13/cobra/bash_completions.md @@ -1,64 +1,16 @@ -# Generating Bash Completions For Your Own cobra.Command +# Generating Bash Completions For Your cobra.Command -If you are using the generator you can create a completion command by running +Please refer to [Shell Completions](shell_completions.md) for details. -```bash -cobra add completion -``` - -Update the help text show how to install the bash_completion Linux show here [Kubectl docs show mac options](https://kubernetes.io/docs/tasks/tools/install-kubectl/#enabling-shell-autocompletion) - -Writing the shell script to stdout allows the most flexible use. - -```go -// completionCmd represents the completion command -var completionCmd = &cobra.Command{ - Use: "completion", - Short: "Generates bash completion scripts", - Long: `To load completion run - -. <(bitbucket completion) - -To configure your bash shell to load completions for each session add to your bashrc - -# ~/.bashrc or ~/.profile -. <(bitbucket completion) -`, - Run: func(cmd *cobra.Command, args []string) { - rootCmd.GenBashCompletion(os.Stdout); - }, -} -``` - -**Note:** The cobra generator may include messages printed to stdout for example if the config file is loaded, this will break the auto complete script - - -## Example from kubectl - -Generating bash completions from a cobra command is incredibly easy. An actual program which does so for the kubernetes kubectl binary is as follows: +## Bash legacy dynamic completions -```go -package main - -import ( - "io/ioutil" - "os" - - "k8s.io/kubernetes/pkg/kubectl/cmd" - "k8s.io/kubernetes/pkg/kubectl/cmd/util" -) +For backward compatibility, Cobra still supports its legacy dynamic completion solution (described below). Unlike the `ValidArgsFunction` solution, the legacy solution will only work for Bash shell-completion and not for other shells. This legacy solution can be used along-side `ValidArgsFunction` and `RegisterFlagCompletionFunc()`, as long as both solutions are not used for the same command. This provides a path to gradually migrate from the legacy solution to the new solution. -func main() { - kubectl := cmd.NewKubectlCommand(util.NewFactory(nil), os.Stdin, ioutil.Discard, ioutil.Discard) - kubectl.GenBashCompletionFile("out.sh") -} -``` +**Note**: Cobra's default `completion` command uses bash completion V2. If you are currently using Cobra's legacy dynamic completion solution, you should not use the default `completion` command but continue using your own. -`out.sh` will get you completions of subcommands and flags. Copy it to `/etc/bash_completion.d/` as described [here](https://debian-administration.org/article/316/An_introduction_to_bash_completion_part_1) and reset your terminal to use autocompletion. If you make additional annotations to your code, you can get even more intelligent and flexible behavior. +The legacy solution allows you to inject bash functions into the bash completion script. Those bash functions are responsible for providing the completion choices for your own completions. -## Creating your own custom functions - -Some more actual code that works in kubernetes: +Some code that works in kubernetes: ```bash const ( @@ -111,108 +63,7 @@ Find more information at https://github.com/GoogleCloudPlatform/kubernetes.`, The `BashCompletionFunction` option is really only valid/useful on the root command. Doing the above will cause `__kubectl_custom_func()` (`___custom_func()`) to be called when the built in processor was unable to find a solution. In the case of kubernetes a valid command might look something like `kubectl get pod [mypod]`. If you type `kubectl get pod [tab][tab]` the `__kubectl_customc_func()` will run because the cobra.Command only understood "kubectl" and "get." `__kubectl_custom_func()` will see that the cobra.Command is "kubectl_get" and will thus call another helper `__kubectl_get_resource()`. `__kubectl_get_resource` will look at the 'nouns' collected. In our example the only noun will be `pod`. So it will call `__kubectl_parse_get pod`. `__kubectl_parse_get` will actually call out to kubernetes and get any pods. It will then set `COMPREPLY` to valid pods! -## Have the completions code complete your 'nouns' - -In the above example "pod" was assumed to already be typed. But if you want `kubectl get [tab][tab]` to show a list of valid "nouns" you have to set them. Simplified code from `kubectl get` looks like: - -```go -validArgs []string = { "pod", "node", "service", "replicationcontroller" } - -cmd := &cobra.Command{ - Use: "get [(-o|--output=)json|yaml|template|...] (RESOURCE [NAME] | RESOURCE/NAME ...)", - Short: "Display one or many resources", - Long: get_long, - Example: get_example, - Run: func(cmd *cobra.Command, args []string) { - err := RunGet(f, out, cmd, args) - util.CheckErr(err) - }, - ValidArgs: validArgs, -} -``` - -Notice we put the "ValidArgs" on the "get" subcommand. Doing so will give results like - -```bash -# kubectl get [tab][tab] -node pod replicationcontroller service -``` - -## Plural form and shortcuts for nouns - -If your nouns have a number of aliases, you can define them alongside `ValidArgs` using `ArgAliases`: - -```go -argAliases []string = { "pods", "nodes", "services", "svc", "replicationcontrollers", "rc" } - -cmd := &cobra.Command{ - ... - ValidArgs: validArgs, - ArgAliases: argAliases -} -``` - -The aliases are not shown to the user on tab completion, but they are accepted as valid nouns by -the completion algorithm if entered manually, e.g. in: - -```bash -# kubectl get rc [tab][tab] -backend frontend database -``` - -Note that without declaring `rc` as an alias, the completion algorithm would show the list of nouns -in this example again instead of the replication controllers. - -## Mark flags as required - -Most of the time completions will only show subcommands. But if a flag is required to make a subcommand work, you probably want it to show up when the user types [tab][tab]. Marking a flag as 'Required' is incredibly easy. - -```go -cmd.MarkFlagRequired("pod") -cmd.MarkFlagRequired("container") -``` - -and you'll get something like - -```bash -# kubectl exec [tab][tab][tab] --c --container= -p --pod= -``` - -# Specify valid filename extensions for flags that take a filename - -In this example we use --filename= and expect to get a json or yaml file as the argument. To make this easier we annotate the --filename flag with valid filename extensions. - -```go - annotations := []string{"json", "yaml", "yml"} - annotation := make(map[string][]string) - annotation[cobra.BashCompFilenameExt] = annotations - - flag := &pflag.Flag{ - Name: "filename", - Shorthand: "f", - Usage: usage, - Value: value, - DefValue: value.String(), - Annotations: annotation, - } - cmd.Flags().AddFlag(flag) -``` - -Now when you run a command with this filename flag you'll get something like - -```bash -# kubectl create -f -test/ example/ rpmbuild/ -hello.yml test.json -``` - -So while there are many other files in the CWD it only shows me subdirs and those with valid extensions. - -# Specify custom flag completion - -Similar to the filename completion and filtering using cobra.BashCompFilenameExt, you can specify -a custom flag completion function with cobra.BashCompCustom: +Similarly, for flags: ```go annotation := make(map[string][]string) @@ -226,7 +77,7 @@ a custom flag completion function with cobra.BashCompCustom: cmd.Flags().AddFlag(flag) ``` -In addition add the `__handle_namespace_flag` implementation in the `BashCompletionFunction` +In addition add the `__kubectl_get_namespaces` implementation in the `BashCompletionFunction` value, e.g.: ```bash @@ -240,17 +91,3 @@ __kubectl_get_namespaces() fi } ``` -# Using bash aliases for commands - -You can also configure the `bash aliases` for the commands and they will also support completions. - -```bash -alias aliasname=origcommand -complete -o default -F __start_origcommand aliasname - -# and now when you run `aliasname` completion will make -# suggestions as it did for `origcommand`. - -$) aliasname -completion firstcommand secondcommand -``` diff --git a/vendor/github.com/spf13/cobra/bash_completionsV2.go b/vendor/github.com/spf13/cobra/bash_completionsV2.go new file mode 100644 index 000000000..bb4b71892 --- /dev/null +++ b/vendor/github.com/spf13/cobra/bash_completionsV2.go @@ -0,0 +1,383 @@ +// Copyright 2013-2022 The Cobra Authors +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package cobra + +import ( + "bytes" + "fmt" + "io" + "os" +) + +func (c *Command) genBashCompletion(w io.Writer, includeDesc bool) error { + buf := new(bytes.Buffer) + genBashComp(buf, c.Name(), includeDesc) + _, err := buf.WriteTo(w) + return err +} + +func genBashComp(buf io.StringWriter, name string, includeDesc bool) { + compCmd := ShellCompRequestCmd + if !includeDesc { + compCmd = ShellCompNoDescRequestCmd + } + + WriteStringAndCheck(buf, fmt.Sprintf(`# bash completion V2 for %-36[1]s -*- shell-script -*- + +__%[1]s_debug() +{ + if [[ -n ${BASH_COMP_DEBUG_FILE:-} ]]; then + echo "$*" >> "${BASH_COMP_DEBUG_FILE}" + fi +} + +# Macs have bash3 for which the bash-completion package doesn't include +# _init_completion. This is a minimal version of that function. +__%[1]s_init_completion() +{ + COMPREPLY=() + _get_comp_words_by_ref "$@" cur prev words cword +} + +# This function calls the %[1]s program to obtain the completion +# results and the directive. It fills the 'out' and 'directive' vars. +__%[1]s_get_completion_results() { + local requestComp lastParam lastChar args + + # Prepare the command to request completions for the program. + # Calling ${words[0]} instead of directly %[1]s allows to handle aliases + args=("${words[@]:1}") + requestComp="${words[0]} %[2]s ${args[*]}" + + lastParam=${words[$((${#words[@]}-1))]} + lastChar=${lastParam:$((${#lastParam}-1)):1} + __%[1]s_debug "lastParam ${lastParam}, lastChar ${lastChar}" + + if [ -z "${cur}" ] && [ "${lastChar}" != "=" ]; then + # If the last parameter is complete (there is a space following it) + # We add an extra empty parameter so we can indicate this to the go method. + __%[1]s_debug "Adding extra empty parameter" + requestComp="${requestComp} ''" + fi + + # When completing a flag with an = (e.g., %[1]s -n=) + # bash focuses on the part after the =, so we need to remove + # the flag part from $cur + if [[ "${cur}" == -*=* ]]; then + cur="${cur#*=}" + fi + + __%[1]s_debug "Calling ${requestComp}" + # Use eval to handle any environment variables and such + out=$(eval "${requestComp}" 2>/dev/null) + + # Extract the directive integer at the very end of the output following a colon (:) + directive=${out##*:} + # Remove the directive + out=${out%%:*} + if [ "${directive}" = "${out}" ]; then + # There is not directive specified + directive=0 + fi + __%[1]s_debug "The completion directive is: ${directive}" + __%[1]s_debug "The completions are: ${out}" +} + +__%[1]s_process_completion_results() { + local shellCompDirectiveError=%[3]d + local shellCompDirectiveNoSpace=%[4]d + local shellCompDirectiveNoFileComp=%[5]d + local shellCompDirectiveFilterFileExt=%[6]d + local shellCompDirectiveFilterDirs=%[7]d + + if [ $((directive & shellCompDirectiveError)) -ne 0 ]; then + # Error code. No completion. + __%[1]s_debug "Received error from custom completion go code" + return + else + if [ $((directive & shellCompDirectiveNoSpace)) -ne 0 ]; then + if [[ $(type -t compopt) = "builtin" ]]; then + __%[1]s_debug "Activating no space" + compopt -o nospace + else + __%[1]s_debug "No space directive not supported in this version of bash" + fi + fi + if [ $((directive & shellCompDirectiveNoFileComp)) -ne 0 ]; then + if [[ $(type -t compopt) = "builtin" ]]; then + __%[1]s_debug "Activating no file completion" + compopt +o default + else + __%[1]s_debug "No file completion directive not supported in this version of bash" + fi + fi + fi + + # Separate activeHelp from normal completions + local completions=() + local activeHelp=() + __%[1]s_extract_activeHelp + + if [ $((directive & shellCompDirectiveFilterFileExt)) -ne 0 ]; then + # File extension filtering + local fullFilter filter filteringCmd + + # Do not use quotes around the $completions variable or else newline + # characters will be kept. + for filter in ${completions[*]}; do + fullFilter+="$filter|" + done + + filteringCmd="_filedir $fullFilter" + __%[1]s_debug "File filtering command: $filteringCmd" + $filteringCmd + elif [ $((directive & shellCompDirectiveFilterDirs)) -ne 0 ]; then + # File completion for directories only + + # Use printf to strip any trailing newline + local subdir + subdir=$(printf "%%s" "${completions[0]}") + if [ -n "$subdir" ]; then + __%[1]s_debug "Listing directories in $subdir" + pushd "$subdir" >/dev/null 2>&1 && _filedir -d && popd >/dev/null 2>&1 || return + else + __%[1]s_debug "Listing directories in ." + _filedir -d + fi + else + __%[1]s_handle_completion_types + fi + + __%[1]s_handle_special_char "$cur" : + __%[1]s_handle_special_char "$cur" = + + # Print the activeHelp statements before we finish + if [ ${#activeHelp[*]} -ne 0 ]; then + printf "\n"; + printf "%%s\n" "${activeHelp[@]}" + printf "\n" + + # The prompt format is only available from bash 4.4. + # We test if it is available before using it. + if (x=${PS1@P}) 2> /dev/null; then + printf "%%s" "${PS1@P}${COMP_LINE[@]}" + else + # Can't print the prompt. Just print the + # text the user had typed, it is workable enough. + printf "%%s" "${COMP_LINE[@]}" + fi + fi +} + +# Separate activeHelp lines from real completions. +# Fills the $activeHelp and $completions arrays. +__%[1]s_extract_activeHelp() { + local activeHelpMarker="%[8]s" + local endIndex=${#activeHelpMarker} + + while IFS='' read -r comp; do + if [ "${comp:0:endIndex}" = "$activeHelpMarker" ]; then + comp=${comp:endIndex} + __%[1]s_debug "ActiveHelp found: $comp" + if [ -n "$comp" ]; then + activeHelp+=("$comp") + fi + else + # Not an activeHelp line but a normal completion + completions+=("$comp") + fi + done < <(printf "%%s\n" "${out}") +} + +__%[1]s_handle_completion_types() { + __%[1]s_debug "__%[1]s_handle_completion_types: COMP_TYPE is $COMP_TYPE" + + case $COMP_TYPE in + 37|42) + # Type: menu-complete/menu-complete-backward and insert-completions + # If the user requested inserting one completion at a time, or all + # completions at once on the command-line we must remove the descriptions. + # https://github.com/spf13/cobra/issues/1508 + local tab=$'\t' comp + while IFS='' read -r comp; do + [[ -z $comp ]] && continue + # Strip any description + comp=${comp%%%%$tab*} + # Only consider the completions that match + if [[ $comp == "$cur"* ]]; then + COMPREPLY+=("$comp") + fi + done < <(printf "%%s\n" "${completions[@]}") + ;; + + *) + # Type: complete (normal completion) + __%[1]s_handle_standard_completion_case + ;; + esac +} + +__%[1]s_handle_standard_completion_case() { + local tab=$'\t' comp + + # Short circuit to optimize if we don't have descriptions + if [[ "${completions[*]}" != *$tab* ]]; then + IFS=$'\n' read -ra COMPREPLY -d '' < <(compgen -W "${completions[*]}" -- "$cur") + return 0 + fi + + local longest=0 + local compline + # Look for the longest completion so that we can format things nicely + while IFS='' read -r compline; do + [[ -z $compline ]] && continue + # Strip any description before checking the length + comp=${compline%%%%$tab*} + # Only consider the completions that match + [[ $comp == "$cur"* ]] || continue + COMPREPLY+=("$compline") + if ((${#comp}>longest)); then + longest=${#comp} + fi + done < <(printf "%%s\n" "${completions[@]}") + + # If there is a single completion left, remove the description text + if [ ${#COMPREPLY[*]} -eq 1 ]; then + __%[1]s_debug "COMPREPLY[0]: ${COMPREPLY[0]}" + comp="${COMPREPLY[0]%%%%$tab*}" + __%[1]s_debug "Removed description from single completion, which is now: ${comp}" + COMPREPLY[0]=$comp + else # Format the descriptions + __%[1]s_format_comp_descriptions $longest + fi +} + +__%[1]s_handle_special_char() +{ + local comp="$1" + local char=$2 + if [[ "$comp" == *${char}* && "$COMP_WORDBREAKS" == *${char}* ]]; then + local word=${comp%%"${comp##*${char}}"} + local idx=${#COMPREPLY[*]} + while [[ $((--idx)) -ge 0 ]]; do + COMPREPLY[$idx]=${COMPREPLY[$idx]#"$word"} + done + fi +} + +__%[1]s_format_comp_descriptions() +{ + local tab=$'\t' + local comp desc maxdesclength + local longest=$1 + + local i ci + for ci in ${!COMPREPLY[*]}; do + comp=${COMPREPLY[ci]} + # Properly format the description string which follows a tab character if there is one + if [[ "$comp" == *$tab* ]]; then + __%[1]s_debug "Original comp: $comp" + desc=${comp#*$tab} + comp=${comp%%%%$tab*} + + # $COLUMNS stores the current shell width. + # Remove an extra 4 because we add 2 spaces and 2 parentheses. + maxdesclength=$(( COLUMNS - longest - 4 )) + + # Make sure we can fit a description of at least 8 characters + # if we are to align the descriptions. + if [[ $maxdesclength -gt 8 ]]; then + # Add the proper number of spaces to align the descriptions + for ((i = ${#comp} ; i < longest ; i++)); do + comp+=" " + done + else + # Don't pad the descriptions so we can fit more text after the completion + maxdesclength=$(( COLUMNS - ${#comp} - 4 )) + fi + + # If there is enough space for any description text, + # truncate the descriptions that are too long for the shell width + if [ $maxdesclength -gt 0 ]; then + if [ ${#desc} -gt $maxdesclength ]; then + desc=${desc:0:$(( maxdesclength - 1 ))} + desc+="…" + fi + comp+=" ($desc)" + fi + COMPREPLY[ci]=$comp + __%[1]s_debug "Final comp: $comp" + fi + done +} + +__start_%[1]s() +{ + local cur prev words cword split + + COMPREPLY=() + + # Call _init_completion from the bash-completion package + # to prepare the arguments properly + if declare -F _init_completion >/dev/null 2>&1; then + _init_completion -n "=:" || return + else + __%[1]s_init_completion -n "=:" || return + fi + + __%[1]s_debug + __%[1]s_debug "========= starting completion logic ==========" + __%[1]s_debug "cur is ${cur}, words[*] is ${words[*]}, #words[@] is ${#words[@]}, cword is $cword" + + # The user could have moved the cursor backwards on the command-line. + # We need to trigger completion from the $cword location, so we need + # to truncate the command-line ($words) up to the $cword location. + words=("${words[@]:0:$cword+1}") + __%[1]s_debug "Truncated words[*]: ${words[*]}," + + local out directive + __%[1]s_get_completion_results + __%[1]s_process_completion_results +} + +if [[ $(type -t compopt) = "builtin" ]]; then + complete -o default -F __start_%[1]s %[1]s +else + complete -o default -o nospace -F __start_%[1]s %[1]s +fi + +# ex: ts=4 sw=4 et filetype=sh +`, name, compCmd, + ShellCompDirectiveError, ShellCompDirectiveNoSpace, ShellCompDirectiveNoFileComp, + ShellCompDirectiveFilterFileExt, ShellCompDirectiveFilterDirs, + activeHelpMarker)) +} + +// GenBashCompletionFileV2 generates Bash completion version 2. +func (c *Command) GenBashCompletionFileV2(filename string, includeDesc bool) error { + outFile, err := os.Create(filename) + if err != nil { + return err + } + defer outFile.Close() + + return c.GenBashCompletionV2(outFile, includeDesc) +} + +// GenBashCompletionV2 generates Bash completion file version 2 +// and writes it to the passed writer. +func (c *Command) GenBashCompletionV2(w io.Writer, includeDesc bool) error { + return c.genBashCompletion(w, includeDesc) +} diff --git a/vendor/github.com/spf13/cobra/cobra.go b/vendor/github.com/spf13/cobra/cobra.go index 6505c070b..fe44bc8a0 100644 --- a/vendor/github.com/spf13/cobra/cobra.go +++ b/vendor/github.com/spf13/cobra/cobra.go @@ -1,9 +1,10 @@ -// Copyright © 2013 Steve Francia . +// Copyright 2013-2022 The Cobra Authors // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at -// http://www.apache.org/licenses/LICENSE-2.0 +// +// http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, @@ -19,6 +20,7 @@ package cobra import ( "fmt" "io" + "os" "reflect" "strconv" "strings" @@ -38,21 +40,31 @@ var templateFuncs = template.FuncMap{ } var initializers []func() +var finalizers []func() + +const ( + defaultPrefixMatching = false + defaultCommandSorting = true + defaultCaseInsensitive = false +) // EnablePrefixMatching allows to set automatic prefix matching. Automatic prefix matching can be a dangerous thing // to automatically enable in CLI tools. // Set this to true to enable it. -var EnablePrefixMatching = false +var EnablePrefixMatching = defaultPrefixMatching // EnableCommandSorting controls sorting of the slice of commands, which is turned on by default. // To disable sorting, set it to false. -var EnableCommandSorting = true +var EnableCommandSorting = defaultCommandSorting + +// EnableCaseInsensitive allows case-insensitive commands names. (case sensitive by default) +var EnableCaseInsensitive = defaultCaseInsensitive // MousetrapHelpText enables an information splash screen on Windows // if the CLI is started from explorer.exe. // To disable the mousetrap, just set this variable to blank string (""). // Works only on Microsoft Windows. -var MousetrapHelpText string = `This is a command line tool. +var MousetrapHelpText = `This is a command line tool. You need to open cmd.exe and run it from there. ` @@ -61,7 +73,7 @@ You need to open cmd.exe and run it from there. // if the CLI is started from explorer.exe. Set to 0 to wait for the return key to be pressed. // To disable the mousetrap, just set MousetrapHelpText to blank string (""). // Works only on Microsoft Windows. -var MousetrapDisplayDuration time.Duration = 5 * time.Second +var MousetrapDisplayDuration = 5 * time.Second // AddTemplateFunc adds a template function that's available to Usage and Help // template generation. @@ -83,6 +95,12 @@ func OnInitialize(y ...func()) { initializers = append(initializers, y...) } +// OnFinalize sets the passed functions to be run when each command's +// Execute method is terminated. +func OnFinalize(y ...func()) { + finalizers = append(finalizers, y...) +} + // FIXME Gt is unused by cobra and should be removed in a version 2. It exists only for compatibility with users of cobra. // Gt takes two types and checks whether the first type is greater than the second. In case of types Arrays, Chans, @@ -205,3 +223,17 @@ func stringInSlice(a string, list []string) bool { } return false } + +// CheckErr prints the msg with the prefix 'Error:' and exits with error code 1. If the msg is nil, it does nothing. +func CheckErr(msg interface{}) { + if msg != nil { + fmt.Fprintln(os.Stderr, "Error:", msg) + os.Exit(1) + } +} + +// WriteStringAndCheck writes a string into a buffer, and checks if the error is not nil. +func WriteStringAndCheck(b io.StringWriter, s string) { + _, err := b.WriteString(s) + CheckErr(err) +} diff --git a/vendor/github.com/spf13/cobra/command.go b/vendor/github.com/spf13/cobra/command.go index c7e898303..6ff47dd5c 100644 --- a/vendor/github.com/spf13/cobra/command.go +++ b/vendor/github.com/spf13/cobra/command.go @@ -1,9 +1,10 @@ -// Copyright © 2013 Steve Francia . +// Copyright 2013-2022 The Cobra Authors // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at -// http://www.apache.org/licenses/LICENSE-2.0 +// +// http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, @@ -17,6 +18,8 @@ package cobra import ( "bytes" + "context" + "errors" "fmt" "io" "os" @@ -27,15 +30,31 @@ import ( flag "github.com/spf13/pflag" ) +const FlagSetByCobraAnnotation = "cobra_annotation_flag_set_by_cobra" + // FParseErrWhitelist configures Flag parse errors to be ignored type FParseErrWhitelist flag.ParseErrorsWhitelist +// Structure to manage groups for commands +type Group struct { + ID string + Title string +} + // Command is just that, a command for your application. // E.g. 'go run ...' - 'run' is the command. Cobra requires // you to define the usage and description as part of your command // definition to ensure usability. type Command struct { // Use is the one-line usage message. + // Recommended syntax is as follow: + // [ ] identifies an optional argument. Arguments that are not enclosed in brackets are required. + // ... indicates that you can specify multiple values for the previous argument. + // | indicates mutually exclusive information. You can use the argument to the left of the separator or the + // argument to the right of the separator. You cannot use both arguments in a single use of the command. + // { } delimits a set of mutually exclusive arguments when one of the arguments is required. If the arguments are + // optional, they are enclosed in brackets ([ ]). + // Example: add [-F file | -D dir]... [-f format] profile Use string // Aliases is an array of aliases that can be used instead of the first word in Use. @@ -48,39 +67,45 @@ type Command struct { // Short is the short description shown in the 'help' output. Short string + // The group id under which this subcommand is grouped in the 'help' output of its parent. + GroupID string + // Long is the long message shown in the 'help ' output. Long string // Example is examples of how to use the command. Example string - // ValidArgs is list of all valid non-flag arguments that are accepted in bash completions + // ValidArgs is list of all valid non-flag arguments that are accepted in shell completions ValidArgs []string + // ValidArgsFunction is an optional function that provides valid non-flag arguments for shell completion. + // It is a dynamic version of using ValidArgs. + // Only one of ValidArgs and ValidArgsFunction can be used for a command. + ValidArgsFunction func(cmd *Command, args []string, toComplete string) ([]string, ShellCompDirective) // Expected arguments Args PositionalArgs // ArgAliases is List of aliases for ValidArgs. - // These are not suggested to the user in the bash completion, + // These are not suggested to the user in the shell completion, // but accepted if entered manually. ArgAliases []string - // BashCompletionFunction is custom functions used by the bash autocompletion generator. + // BashCompletionFunction is custom bash functions used by the legacy bash autocompletion generator. + // For portability with other shells, it is recommended to instead use ValidArgsFunction BashCompletionFunction string // Deprecated defines, if this command is deprecated and should print this string when used. Deprecated string - // Hidden defines, if this command is hidden and should NOT show up in the list of available commands. - Hidden bool - // Annotations are key/value pairs that can be used by applications to identify or // group commands. Annotations map[string]string // Version defines the version for this command. If this value is non-empty and the command does not // define a "version" flag, a "version" boolean flag will be added to the command and, if specified, - // will print content of the "Version" variable. + // will print content of the "Version" variable. A shorthand "v" flag will also be added if the + // command does not define one. Version string // The *Run functions are executed in the following order: @@ -112,52 +137,8 @@ type Command struct { // PersistentPostRunE: PersistentPostRun but returns an error. PersistentPostRunE func(cmd *Command, args []string) error - // SilenceErrors is an option to quiet errors down stream. - SilenceErrors bool - - // SilenceUsage is an option to silence usage when an error occurs. - SilenceUsage bool - - // DisableFlagParsing disables the flag parsing. - // If this is true all flags will be passed to the command as arguments. - DisableFlagParsing bool - - // DisableAutoGenTag defines, if gen tag ("Auto generated by spf13/cobra...") - // will be printed by generating docs for this command. - DisableAutoGenTag bool - - // DisableFlagsInUseLine will disable the addition of [flags] to the usage - // line of a command when printing help or generating docs - DisableFlagsInUseLine bool - - // DisableSuggestions disables the suggestions based on Levenshtein distance - // that go along with 'unknown command' messages. - DisableSuggestions bool - // SuggestionsMinimumDistance defines minimum levenshtein distance to display suggestions. - // Must be > 0. - SuggestionsMinimumDistance int - - // TraverseChildren parses flags on all parents before executing child command. - TraverseChildren bool - - //FParseErrWhitelist flag parse errors to be ignored - FParseErrWhitelist FParseErrWhitelist - - // commands is the list of commands supported by this program. - commands []*Command - // parent is a parent command for this command. - parent *Command - // Max lengths of commands' string lengths for use in padding. - commandsMaxUseLen int - commandsMaxCommandPathLen int - commandsMaxNameLen int - // commandsAreSorted defines, if command slice are sorted or not. - commandsAreSorted bool - // commandCalledAs is the name or alias value used to call this command. - commandCalledAs struct { - name string - called bool - } + // groups for subcommands + commandgroups []*Group // args is actual args parsed from flags. args []string @@ -191,6 +172,12 @@ type Command struct { // helpCommand is command with usage 'help'. If it's not defined by user, // cobra uses default help command. helpCommand *Command + // helpCommandGroupID is the group id for the helpCommand + helpCommandGroupID string + + // completionCommandGroupID is the group id for the completion command + completionCommandGroupID string + // versionTemplate is the version template defined by user. versionTemplate string @@ -200,6 +187,80 @@ type Command struct { outWriter io.Writer // errWriter is a writer defined by the user that replaces stderr errWriter io.Writer + + // FParseErrWhitelist flag parse errors to be ignored + FParseErrWhitelist FParseErrWhitelist + + // CompletionOptions is a set of options to control the handling of shell completion + CompletionOptions CompletionOptions + + // commandsAreSorted defines, if command slice are sorted or not. + commandsAreSorted bool + // commandCalledAs is the name or alias value used to call this command. + commandCalledAs struct { + name string + called bool + } + + ctx context.Context + + // commands is the list of commands supported by this program. + commands []*Command + // parent is a parent command for this command. + parent *Command + // Max lengths of commands' string lengths for use in padding. + commandsMaxUseLen int + commandsMaxCommandPathLen int + commandsMaxNameLen int + + // TraverseChildren parses flags on all parents before executing child command. + TraverseChildren bool + + // Hidden defines, if this command is hidden and should NOT show up in the list of available commands. + Hidden bool + + // SilenceErrors is an option to quiet errors down stream. + SilenceErrors bool + + // SilenceUsage is an option to silence usage when an error occurs. + SilenceUsage bool + + // DisableFlagParsing disables the flag parsing. + // If this is true all flags will be passed to the command as arguments. + DisableFlagParsing bool + + // DisableAutoGenTag defines, if gen tag ("Auto generated by spf13/cobra...") + // will be printed by generating docs for this command. + DisableAutoGenTag bool + + // DisableFlagsInUseLine will disable the addition of [flags] to the usage + // line of a command when printing help or generating docs + DisableFlagsInUseLine bool + + // DisableSuggestions disables the suggestions based on Levenshtein distance + // that go along with 'unknown command' messages. + DisableSuggestions bool + + // SuggestionsMinimumDistance defines minimum levenshtein distance to display suggestions. + // Must be > 0. + SuggestionsMinimumDistance int +} + +// Context returns underlying command context. If command was executed +// with ExecuteContext or the context was set with SetContext, the +// previously set context will be returned. Otherwise, nil is returned. +// +// Notice that a call to Execute and ExecuteC will replace a nil context of +// a command with a context.Background, so a background context will be +// returned by Context after one of these functions has been called. +func (c *Command) Context() context.Context { + return c.ctx +} + +// SetContext sets context for the command. This context will be overwritten by +// Command.ExecuteContext or Command.ExecuteContextC. +func (c *Command) SetContext(ctx context.Context) { + c.ctx = ctx } // SetArgs sets arguments for the command. It is set to os.Args[1:] by default, if desired, can be overridden @@ -228,7 +289,7 @@ func (c *Command) SetErr(newErr io.Writer) { c.errWriter = newErr } -// SetOut sets the source for input data +// SetIn sets the source for input data // If newIn is nil, os.Stdin is used. func (c *Command) SetIn(newIn io.Reader) { c.inReader = newIn @@ -260,6 +321,21 @@ func (c *Command) SetHelpCommand(cmd *Command) { c.helpCommand = cmd } +// SetHelpCommandGroup sets the group id of the help command. +func (c *Command) SetHelpCommandGroupID(groupID string) { + if c.helpCommand != nil { + c.helpCommand.GroupID = groupID + } + // helpCommandGroupID is used if no helpCommand is defined by the user + c.helpCommandGroupID = groupID +} + +// SetCompletionCommandGroup sets the group id of the completion command. +func (c *Command) SetCompletionCommandGroupID(groupID string) { + // completionCommandGroupID is used if no completion command is defined by the user + c.Root().completionCommandGroupID = groupID +} + // SetHelpTemplate sets help template to be used. Application can use it to set custom template. func (c *Command) SetHelpTemplate(s string) { c.helpTemplate = s @@ -297,7 +373,7 @@ func (c *Command) ErrOrStderr() io.Writer { return c.getErr(os.Stderr) } -// ErrOrStderr returns output to stderr +// InOrStdin returns input to stdin func (c *Command) InOrStdin() io.Reader { return c.getIn(os.Stdin) } @@ -345,7 +421,7 @@ func (c *Command) UsageFunc() (f func(*Command) error) { c.mergePersistentFlags() err := tmpl(c.OutOrStderr(), c.UsageTemplate(), c) if err != nil { - c.Println(err) + c.PrintErrln(err) } return err } @@ -369,9 +445,11 @@ func (c *Command) HelpFunc() func(*Command, []string) { } return func(c *Command, a []string) { c.mergePersistentFlags() + // The help should be sent to stdout + // See https://github.com/spf13/cobra/issues/1002 err := tmpl(c.OutOrStdout(), c.HelpTemplate(), c) if err != nil { - c.Println(err) + c.PrintErrln(err) } } } @@ -394,7 +472,7 @@ func (c *Command) UsageString() string { c.outWriter = bb c.errWriter = bb - c.Usage() + CheckErr(c.Usage()) // Setting things back to normal c.outWriter = tmpOutput @@ -466,10 +544,16 @@ Aliases: {{.NameAndAliases}}{{end}}{{if .HasExample}} Examples: -{{.Example}}{{end}}{{if .HasAvailableSubCommands}} +{{.Example}}{{end}}{{if .HasAvailableSubCommands}}{{$cmds := .Commands}}{{if eq (len .Groups) 0}} + +Available Commands:{{range $cmds}}{{if (or .IsAvailableCommand (eq .Name "help"))}} + {{rpad .Name .NamePadding }} {{.Short}}{{end}}{{end}}{{else}}{{range $group := .Groups}} + +{{.Title}}{{range $cmds}}{{if (and (eq .GroupID $group.ID) (or .IsAvailableCommand (eq .Name "help")))}} + {{rpad .Name .NamePadding }} {{.Short}}{{end}}{{end}}{{end}}{{if not .AllChildCommandsHaveGroup}} -Available Commands:{{range .Commands}}{{if (or .IsAvailableCommand (eq .Name "help"))}} - {{rpad .Name .NamePadding }} {{.Short}}{{end}}{{end}}{{end}}{{if .HasAvailableLocalFlags}} +Additional Commands:{{range $cmds}}{{if (and (eq .GroupID "") (or .IsAvailableCommand (eq .Name "help")))}} + {{rpad .Name .NamePadding }} {{.Short}}{{end}}{{end}}{{end}}{{end}}{{end}}{{if .HasAvailableLocalFlags}} Flags: {{.LocalFlags.FlagUsages | trimTrailingWhitespaces}}{{end}}{{if .HasAvailableInheritedFlags}} @@ -634,7 +718,7 @@ func (c *Command) findSuggestions(arg string) string { func (c *Command) findNext(next string) *Command { matches := make([]*Command, 0) for _, cmd := range c.commands { - if cmd.Name() == next || cmd.HasAlias(next) { + if commandNameMatches(cmd.Name(), next) || cmd.HasAlias(next) { cmd.commandCalledAs.name = next return cmd } @@ -791,6 +875,8 @@ func (c *Command) execute(a []string) (err error) { c.preRun() + defer c.postRun() + argWoFlags := c.Flags().Args() if c.DisableFlagParsing { argWoFlags = a @@ -819,9 +905,13 @@ func (c *Command) execute(a []string) (err error) { c.PreRun(c, argWoFlags) } - if err := c.validateRequiredFlags(); err != nil { + if err := c.ValidateRequiredFlags(); err != nil { + return err + } + if err := c.ValidateFlagGroups(); err != nil { return err } + if c.RunE != nil { if err := c.RunE(c, argWoFlags); err != nil { return err @@ -857,6 +947,20 @@ func (c *Command) preRun() { } } +func (c *Command) postRun() { + for _, x := range finalizers { + x() + } +} + +// ExecuteContext is the same as Execute(), but sets the ctx on the command. +// Retrieve ctx by calling cmd.Context() inside your *Run lifecycle or ValidArgs +// functions. +func (c *Command) ExecuteContext(ctx context.Context) error { + c.ctx = ctx + return c.Execute() +} + // Execute uses the args (os.Args[1:] by default) // and run through the command tree finding appropriate matches // for commands and then corresponding flags. @@ -865,8 +969,20 @@ func (c *Command) Execute() error { return err } +// ExecuteContextC is the same as ExecuteC(), but sets the ctx on the command. +// Retrieve ctx by calling cmd.Context() inside your *Run lifecycle or ValidArgs +// functions. +func (c *Command) ExecuteContextC(ctx context.Context) (*Command, error) { + c.ctx = ctx + return c.ExecuteC() +} + // ExecuteC executes the command. func (c *Command) ExecuteC() (cmd *Command, err error) { + if c.ctx == nil { + c.ctx = context.Background() + } + // Regardless of what command execute is called on, run on Root only if c.HasParent() { return c.Root().ExecuteC() @@ -877,9 +993,14 @@ func (c *Command) ExecuteC() (cmd *Command, err error) { preExecHookFn(c) } - // initialize help as the last point possible to allow for user - // overriding + // initialize help at the last point to allow for user overriding c.InitDefaultHelpCmd() + // initialize completion at the last point to allow for user overriding + c.InitDefaultCompletionCmd() + + // Now that all commands have been created, let's make sure all groups + // are properly created also + c.checkCommandGroups() args := c.args @@ -888,6 +1009,9 @@ func (c *Command) ExecuteC() (cmd *Command, err error) { args = os.Args[1:] } + // initialize the hidden command to be used for shell completion + c.initCompleteCmd(args) + var flags []string if c.TraverseChildren { cmd, flags, err = c.Traverse(args) @@ -900,8 +1024,8 @@ func (c *Command) ExecuteC() (cmd *Command, err error) { c = cmd } if !c.SilenceErrors { - c.Println("Error:", err.Error()) - c.Printf("Run '%v --help' for usage.\n", c.CommandPath()) + c.PrintErrln("Error:", err.Error()) + c.PrintErrf("Run '%v --help' for usage.\n", c.CommandPath()) } return c, err } @@ -911,22 +1035,28 @@ func (c *Command) ExecuteC() (cmd *Command, err error) { cmd.commandCalledAs.name = cmd.Name() } + // We have to pass global context to children command + // if context is present on the parent command. + if cmd.ctx == nil { + cmd.ctx = c.ctx + } + err = cmd.execute(flags) if err != nil { // Always show help if requested, even if SilenceErrors is in // effect - if err == flag.ErrHelp { + if errors.Is(err, flag.ErrHelp) { cmd.HelpFunc()(cmd, args) return cmd, nil } - // If root command has SilentErrors flagged, + // If root command has SilenceErrors flagged, // all subcommands should respect it if !cmd.SilenceErrors && !c.SilenceErrors { - c.Println("Error:", err.Error()) + c.PrintErrln("Error:", err.Error()) } - // If root command has SilentUsage flagged, + // If root command has SilenceUsage flagged, // all subcommands should respect it if !cmd.SilenceUsage && !c.SilenceUsage { c.Println(cmd.UsageString()) @@ -937,12 +1067,17 @@ func (c *Command) ExecuteC() (cmd *Command, err error) { func (c *Command) ValidateArgs(args []string) error { if c.Args == nil { - return nil + return ArbitraryArgs(c, args) } return c.Args(c, args) } -func (c *Command) validateRequiredFlags() error { +// ValidateRequiredFlags validates all required flags are present and returns an error otherwise +func (c *Command) ValidateRequiredFlags() error { + if c.DisableFlagParsing { + return nil + } + flags := c.Flags() missingFlagNames := []string{} flags.VisitAll(func(pflag *flag.Flag) { @@ -961,6 +1096,19 @@ func (c *Command) validateRequiredFlags() error { return nil } +// checkCommandGroups checks if a command has been added to a group that does not exists. +// If so, we panic because it indicates a coding error that should be corrected. +func (c *Command) checkCommandGroups() { + for _, sub := range c.commands { + // if Group is not defined let the developer know right away + if sub.GroupID != "" && !c.ContainsGroup(sub.GroupID) { + panic(fmt.Sprintf("group id '%s' is not defined for subcommand '%s'", sub.GroupID, sub.CommandPath())) + } + + sub.checkCommandGroups() + } +} + // InitDefaultHelpFlag adds default help flag to c. // It is called automatically by executing the c or by calling help and usage. // If c already has help flag, it will do nothing. @@ -974,6 +1122,7 @@ func (c *Command) InitDefaultHelpFlag() { usage += c.Name() } c.Flags().BoolP("help", "h", false, usage) + _ = c.Flags().SetAnnotation("help", FlagSetByCobraAnnotation, []string{"true"}) } } @@ -994,7 +1143,12 @@ func (c *Command) InitDefaultVersionFlag() { } else { usage += c.Name() } - c.Flags().Bool("version", false, usage) + if c.Flags().ShorthandLookup("v") == nil { + c.Flags().BoolP("version", "v", false, usage) + } else { + c.Flags().Bool("version", false, usage) + } + _ = c.Flags().SetAnnotation("version", FlagSetByCobraAnnotation, []string{"true"}) } } @@ -1012,17 +1166,37 @@ func (c *Command) InitDefaultHelpCmd() { Short: "Help about any command", Long: `Help provides help for any command in the application. Simply type ` + c.Name() + ` help [path to command] for full details.`, - + ValidArgsFunction: func(c *Command, args []string, toComplete string) ([]string, ShellCompDirective) { + var completions []string + cmd, _, e := c.Root().Find(args) + if e != nil { + return nil, ShellCompDirectiveNoFileComp + } + if cmd == nil { + // Root help command. + cmd = c.Root() + } + for _, subCmd := range cmd.Commands() { + if subCmd.IsAvailableCommand() || subCmd == cmd.helpCommand { + if strings.HasPrefix(subCmd.Name(), toComplete) { + completions = append(completions, fmt.Sprintf("%s\t%s", subCmd.Name(), subCmd.Short)) + } + } + } + return completions, ShellCompDirectiveNoFileComp + }, Run: func(c *Command, args []string) { cmd, _, e := c.Root().Find(args) if cmd == nil || e != nil { c.Printf("Unknown help topic %#q\n", args) - c.Root().Usage() + CheckErr(c.Root().Usage()) } else { - cmd.InitDefaultHelpFlag() // make possible 'help' flag to be shown - cmd.Help() + cmd.InitDefaultHelpFlag() // make possible 'help' flag to be shown + cmd.InitDefaultVersionFlag() // make possible 'version' flag to be shown + CheckErr(cmd.Help()) } }, + GroupID: c.helpCommandGroupID, } } c.RemoveCommand(c.helpCommand) @@ -1083,6 +1257,36 @@ func (c *Command) AddCommand(cmds ...*Command) { } } +// Groups returns a slice of child command groups. +func (c *Command) Groups() []*Group { + return c.commandgroups +} + +// AllChildCommandsHaveGroup returns if all subcommands are assigned to a group +func (c *Command) AllChildCommandsHaveGroup() bool { + for _, sub := range c.commands { + if (sub.IsAvailableCommand() || sub == c.helpCommand) && sub.GroupID == "" { + return false + } + } + return true +} + +// ContainGroups return if groupID exists in the list of command groups. +func (c *Command) ContainsGroup(groupID string) bool { + for _, x := range c.commandgroups { + if x.ID == groupID { + return true + } + } + return false +} + +// AddGroup adds one or more command groups to this parent command. +func (c *Command) AddGroup(groups ...*Group) { + c.commandgroups = append(c.commandgroups, groups...) +} + // RemoveCommand removes one or more commands from a parent command. func (c *Command) RemoveCommand(cmds ...*Command) { commands := []*Command{} @@ -1139,12 +1343,12 @@ func (c *Command) PrintErr(i ...interface{}) { // PrintErrln is a convenience method to Println to the defined Err output, fallback to Stderr if not set. func (c *Command) PrintErrln(i ...interface{}) { - c.Print(fmt.Sprintln(i...)) + c.PrintErr(fmt.Sprintln(i...)) } // PrintErrf is a convenience method to Printf to the defined Err output, fallback to Stderr if not set. func (c *Command) PrintErrf(format string, i ...interface{}) { - c.Print(fmt.Sprintf(format, i...)) + c.PrintErr(fmt.Sprintf(format, i...)) } // CommandPath returns the full path to this command. @@ -1226,7 +1430,7 @@ func (c *Command) Name() string { // HasAlias determines if a given string is an alias of the command. func (c *Command) HasAlias(s string) bool { for _, a := range c.Aliases { - if a == s { + if commandNameMatches(a, s) { return true } } @@ -1403,7 +1607,8 @@ func (c *Command) LocalFlags() *flag.FlagSet { } addToLocal := func(f *flag.Flag) { - if c.lflags.Lookup(f.Name) == nil && c.parentsPflags.Lookup(f.Name) == nil { + // Add the flag if it is not a parent PFlag, or it shadows a parent PFlag + if c.lflags.Lookup(f.Name) == nil && f != c.parentsPflags.Lookup(f.Name) { c.lflags.AddFlag(f) } } @@ -1547,7 +1752,7 @@ func (c *Command) ParseFlags(args []string) error { beforeErrorBufLen := c.flagErrorBuf.Len() c.mergePersistentFlags() - //do it here after merging all flags and just before parse + // do it here after merging all flags and just before parse c.Flags().ParseErrorsWhitelist = flag.ParseErrorsWhitelist(c.FParseErrWhitelist) err := c.Flags().Parse(args) @@ -1592,3 +1797,14 @@ func (c *Command) updateParentsPflags() { c.parentsPflags.AddFlagSet(parent.PersistentFlags()) }) } + +// commandNameMatches checks if two command names are equal +// taking into account case sensitivity according to +// EnableCaseInsensitive global configuration. +func commandNameMatches(s string, t string) bool { + if EnableCaseInsensitive { + return strings.EqualFold(s, t) + } + + return s == t +} diff --git a/vendor/github.com/spf13/cobra/command_notwin.go b/vendor/github.com/spf13/cobra/command_notwin.go index 6159c1cc1..2b77f8f01 100644 --- a/vendor/github.com/spf13/cobra/command_notwin.go +++ b/vendor/github.com/spf13/cobra/command_notwin.go @@ -1,3 +1,18 @@ +// Copyright 2013-2022 The Cobra Authors +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +//go:build !windows // +build !windows package cobra diff --git a/vendor/github.com/spf13/cobra/command_win.go b/vendor/github.com/spf13/cobra/command_win.go index 8768b1736..520f23abf 100644 --- a/vendor/github.com/spf13/cobra/command_win.go +++ b/vendor/github.com/spf13/cobra/command_win.go @@ -1,3 +1,18 @@ +// Copyright 2013-2022 The Cobra Authors +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +//go:build windows // +build windows package cobra diff --git a/vendor/github.com/spf13/cobra/completions.go b/vendor/github.com/spf13/cobra/completions.go new file mode 100644 index 000000000..e8a0206db --- /dev/null +++ b/vendor/github.com/spf13/cobra/completions.go @@ -0,0 +1,871 @@ +// Copyright 2013-2022 The Cobra Authors +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package cobra + +import ( + "fmt" + "os" + "strings" + "sync" + + "github.com/spf13/pflag" +) + +const ( + // ShellCompRequestCmd is the name of the hidden command that is used to request + // completion results from the program. It is used by the shell completion scripts. + ShellCompRequestCmd = "__complete" + // ShellCompNoDescRequestCmd is the name of the hidden command that is used to request + // completion results without their description. It is used by the shell completion scripts. + ShellCompNoDescRequestCmd = "__completeNoDesc" +) + +// Global map of flag completion functions. Make sure to use flagCompletionMutex before you try to read and write from it. +var flagCompletionFunctions = map[*pflag.Flag]func(cmd *Command, args []string, toComplete string) ([]string, ShellCompDirective){} + +// lock for reading and writing from flagCompletionFunctions +var flagCompletionMutex = &sync.RWMutex{} + +// ShellCompDirective is a bit map representing the different behaviors the shell +// can be instructed to have once completions have been provided. +type ShellCompDirective int + +type flagCompError struct { + subCommand string + flagName string +} + +func (e *flagCompError) Error() string { + return "Subcommand '" + e.subCommand + "' does not support flag '" + e.flagName + "'" +} + +const ( + // ShellCompDirectiveError indicates an error occurred and completions should be ignored. + ShellCompDirectiveError ShellCompDirective = 1 << iota + + // ShellCompDirectiveNoSpace indicates that the shell should not add a space + // after the completion even if there is a single completion provided. + ShellCompDirectiveNoSpace + + // ShellCompDirectiveNoFileComp indicates that the shell should not provide + // file completion even when no completion is provided. + ShellCompDirectiveNoFileComp + + // ShellCompDirectiveFilterFileExt indicates that the provided completions + // should be used as file extension filters. + // For flags, using Command.MarkFlagFilename() and Command.MarkPersistentFlagFilename() + // is a shortcut to using this directive explicitly. The BashCompFilenameExt + // annotation can also be used to obtain the same behavior for flags. + ShellCompDirectiveFilterFileExt + + // ShellCompDirectiveFilterDirs indicates that only directory names should + // be provided in file completion. To request directory names within another + // directory, the returned completions should specify the directory within + // which to search. The BashCompSubdirsInDir annotation can be used to + // obtain the same behavior but only for flags. + ShellCompDirectiveFilterDirs + + // =========================================================================== + + // All directives using iota should be above this one. + // For internal use. + shellCompDirectiveMaxValue + + // ShellCompDirectiveDefault indicates to let the shell perform its default + // behavior after completions have been provided. + // This one must be last to avoid messing up the iota count. + ShellCompDirectiveDefault ShellCompDirective = 0 +) + +const ( + // Constants for the completion command + compCmdName = "completion" + compCmdNoDescFlagName = "no-descriptions" + compCmdNoDescFlagDesc = "disable completion descriptions" + compCmdNoDescFlagDefault = false +) + +// CompletionOptions are the options to control shell completion +type CompletionOptions struct { + // DisableDefaultCmd prevents Cobra from creating a default 'completion' command + DisableDefaultCmd bool + // DisableNoDescFlag prevents Cobra from creating the '--no-descriptions' flag + // for shells that support completion descriptions + DisableNoDescFlag bool + // DisableDescriptions turns off all completion descriptions for shells + // that support them + DisableDescriptions bool + // HiddenDefaultCmd makes the default 'completion' command hidden + HiddenDefaultCmd bool +} + +// NoFileCompletions can be used to disable file completion for commands that should +// not trigger file completions. +func NoFileCompletions(cmd *Command, args []string, toComplete string) ([]string, ShellCompDirective) { + return nil, ShellCompDirectiveNoFileComp +} + +// FixedCompletions can be used to create a completion function which always +// returns the same results. +func FixedCompletions(choices []string, directive ShellCompDirective) func(cmd *Command, args []string, toComplete string) ([]string, ShellCompDirective) { + return func(cmd *Command, args []string, toComplete string) ([]string, ShellCompDirective) { + return choices, directive + } +} + +// RegisterFlagCompletionFunc should be called to register a function to provide completion for a flag. +func (c *Command) RegisterFlagCompletionFunc(flagName string, f func(cmd *Command, args []string, toComplete string) ([]string, ShellCompDirective)) error { + flag := c.Flag(flagName) + if flag == nil { + return fmt.Errorf("RegisterFlagCompletionFunc: flag '%s' does not exist", flagName) + } + flagCompletionMutex.Lock() + defer flagCompletionMutex.Unlock() + + if _, exists := flagCompletionFunctions[flag]; exists { + return fmt.Errorf("RegisterFlagCompletionFunc: flag '%s' already registered", flagName) + } + flagCompletionFunctions[flag] = f + return nil +} + +// Returns a string listing the different directive enabled in the specified parameter +func (d ShellCompDirective) string() string { + var directives []string + if d&ShellCompDirectiveError != 0 { + directives = append(directives, "ShellCompDirectiveError") + } + if d&ShellCompDirectiveNoSpace != 0 { + directives = append(directives, "ShellCompDirectiveNoSpace") + } + if d&ShellCompDirectiveNoFileComp != 0 { + directives = append(directives, "ShellCompDirectiveNoFileComp") + } + if d&ShellCompDirectiveFilterFileExt != 0 { + directives = append(directives, "ShellCompDirectiveFilterFileExt") + } + if d&ShellCompDirectiveFilterDirs != 0 { + directives = append(directives, "ShellCompDirectiveFilterDirs") + } + if len(directives) == 0 { + directives = append(directives, "ShellCompDirectiveDefault") + } + + if d >= shellCompDirectiveMaxValue { + return fmt.Sprintf("ERROR: unexpected ShellCompDirective value: %d", d) + } + return strings.Join(directives, ", ") +} + +// Adds a special hidden command that can be used to request custom completions. +func (c *Command) initCompleteCmd(args []string) { + completeCmd := &Command{ + Use: fmt.Sprintf("%s [command-line]", ShellCompRequestCmd), + Aliases: []string{ShellCompNoDescRequestCmd}, + DisableFlagsInUseLine: true, + Hidden: true, + DisableFlagParsing: true, + Args: MinimumNArgs(1), + Short: "Request shell completion choices for the specified command-line", + Long: fmt.Sprintf("%[2]s is a special command that is used by the shell completion logic\n%[1]s", + "to request completion choices for the specified command-line.", ShellCompRequestCmd), + Run: func(cmd *Command, args []string) { + finalCmd, completions, directive, err := cmd.getCompletions(args) + if err != nil { + CompErrorln(err.Error()) + // Keep going for multiple reasons: + // 1- There could be some valid completions even though there was an error + // 2- Even without completions, we need to print the directive + } + + noDescriptions := (cmd.CalledAs() == ShellCompNoDescRequestCmd) + for _, comp := range completions { + if GetActiveHelpConfig(finalCmd) == activeHelpGlobalDisable { + // Remove all activeHelp entries in this case + if strings.HasPrefix(comp, activeHelpMarker) { + continue + } + } + if noDescriptions { + // Remove any description that may be included following a tab character. + comp = strings.Split(comp, "\t")[0] + } + + // Make sure we only write the first line to the output. + // This is needed if a description contains a linebreak. + // Otherwise the shell scripts will interpret the other lines as new flags + // and could therefore provide a wrong completion. + comp = strings.Split(comp, "\n")[0] + + // Finally trim the completion. This is especially important to get rid + // of a trailing tab when there are no description following it. + // For example, a sub-command without a description should not be completed + // with a tab at the end (or else zsh will show a -- following it + // although there is no description). + comp = strings.TrimSpace(comp) + + // Print each possible completion to stdout for the completion script to consume. + fmt.Fprintln(finalCmd.OutOrStdout(), comp) + } + + // As the last printout, print the completion directive for the completion script to parse. + // The directive integer must be that last character following a single colon (:). + // The completion script expects : + fmt.Fprintf(finalCmd.OutOrStdout(), ":%d\n", directive) + + // Print some helpful info to stderr for the user to understand. + // Output from stderr must be ignored by the completion script. + fmt.Fprintf(finalCmd.ErrOrStderr(), "Completion ended with directive: %s\n", directive.string()) + }, + } + c.AddCommand(completeCmd) + subCmd, _, err := c.Find(args) + if err != nil || subCmd.Name() != ShellCompRequestCmd { + // Only create this special command if it is actually being called. + // This reduces possible side-effects of creating such a command; + // for example, having this command would cause problems to a + // cobra program that only consists of the root command, since this + // command would cause the root command to suddenly have a subcommand. + c.RemoveCommand(completeCmd) + } +} + +func (c *Command) getCompletions(args []string) (*Command, []string, ShellCompDirective, error) { + // The last argument, which is not completely typed by the user, + // should not be part of the list of arguments + toComplete := args[len(args)-1] + trimmedArgs := args[:len(args)-1] + + var finalCmd *Command + var finalArgs []string + var err error + // Find the real command for which completion must be performed + // check if we need to traverse here to parse local flags on parent commands + if c.Root().TraverseChildren { + finalCmd, finalArgs, err = c.Root().Traverse(trimmedArgs) + } else { + // For Root commands that don't specify any value for their Args fields, when we call + // Find(), if those Root commands don't have any sub-commands, they will accept arguments. + // However, because we have added the __complete sub-command in the current code path, the + // call to Find() -> legacyArgs() will return an error if there are any arguments. + // To avoid this, we first remove the __complete command to get back to having no sub-commands. + rootCmd := c.Root() + if len(rootCmd.Commands()) == 1 { + rootCmd.RemoveCommand(c) + } + + finalCmd, finalArgs, err = rootCmd.Find(trimmedArgs) + } + if err != nil { + // Unable to find the real command. E.g., someInvalidCmd + return c, []string{}, ShellCompDirectiveDefault, fmt.Errorf("Unable to find a command for arguments: %v", trimmedArgs) + } + finalCmd.ctx = c.ctx + + // These flags are normally added when `execute()` is called on `finalCmd`, + // however, when doing completion, we don't call `finalCmd.execute()`. + // Let's add the --help and --version flag ourselves. + finalCmd.InitDefaultHelpFlag() + finalCmd.InitDefaultVersionFlag() + + // Check if we are doing flag value completion before parsing the flags. + // This is important because if we are completing a flag value, we need to also + // remove the flag name argument from the list of finalArgs or else the parsing + // could fail due to an invalid value (incomplete) for the flag. + flag, finalArgs, toComplete, flagErr := checkIfFlagCompletion(finalCmd, finalArgs, toComplete) + + // Check if interspersed is false or -- was set on a previous arg. + // This works by counting the arguments. Normally -- is not counted as arg but + // if -- was already set or interspersed is false and there is already one arg then + // the extra added -- is counted as arg. + flagCompletion := true + _ = finalCmd.ParseFlags(append(finalArgs, "--")) + newArgCount := finalCmd.Flags().NArg() + + // Parse the flags early so we can check if required flags are set + if err = finalCmd.ParseFlags(finalArgs); err != nil { + return finalCmd, []string{}, ShellCompDirectiveDefault, fmt.Errorf("Error while parsing flags from args %v: %s", finalArgs, err.Error()) + } + + realArgCount := finalCmd.Flags().NArg() + if newArgCount > realArgCount { + // don't do flag completion (see above) + flagCompletion = false + } + // Error while attempting to parse flags + if flagErr != nil { + // If error type is flagCompError and we don't want flagCompletion we should ignore the error + if _, ok := flagErr.(*flagCompError); !(ok && !flagCompletion) { + return finalCmd, []string{}, ShellCompDirectiveDefault, flagErr + } + } + + // Look for the --help or --version flags. If they are present, + // there should be no further completions. + if helpOrVersionFlagPresent(finalCmd) { + return finalCmd, []string{}, ShellCompDirectiveNoFileComp, nil + } + + // We only remove the flags from the arguments if DisableFlagParsing is not set. + // This is important for commands which have requested to do their own flag completion. + if !finalCmd.DisableFlagParsing { + finalArgs = finalCmd.Flags().Args() + } + + if flag != nil && flagCompletion { + // Check if we are completing a flag value subject to annotations + if validExts, present := flag.Annotations[BashCompFilenameExt]; present { + if len(validExts) != 0 { + // File completion filtered by extensions + return finalCmd, validExts, ShellCompDirectiveFilterFileExt, nil + } + + // The annotation requests simple file completion. There is no reason to do + // that since it is the default behavior anyway. Let's ignore this annotation + // in case the program also registered a completion function for this flag. + // Even though it is a mistake on the program's side, let's be nice when we can. + } + + if subDir, present := flag.Annotations[BashCompSubdirsInDir]; present { + if len(subDir) == 1 { + // Directory completion from within a directory + return finalCmd, subDir, ShellCompDirectiveFilterDirs, nil + } + // Directory completion + return finalCmd, []string{}, ShellCompDirectiveFilterDirs, nil + } + } + + var completions []string + var directive ShellCompDirective + + // Enforce flag groups before doing flag completions + finalCmd.enforceFlagGroupsForCompletion() + + // Note that we want to perform flagname completion even if finalCmd.DisableFlagParsing==true; + // doing this allows for completion of persistent flag names even for commands that disable flag parsing. + // + // When doing completion of a flag name, as soon as an argument starts with + // a '-' we know it is a flag. We cannot use isFlagArg() here as it requires + // the flag name to be complete + if flag == nil && len(toComplete) > 0 && toComplete[0] == '-' && !strings.Contains(toComplete, "=") && flagCompletion { + // First check for required flags + completions = completeRequireFlags(finalCmd, toComplete) + + // If we have not found any required flags, only then can we show regular flags + if len(completions) == 0 { + doCompleteFlags := func(flag *pflag.Flag) { + if !flag.Changed || + strings.Contains(flag.Value.Type(), "Slice") || + strings.Contains(flag.Value.Type(), "Array") { + // If the flag is not already present, or if it can be specified multiple times (Array or Slice) + // we suggest it as a completion + completions = append(completions, getFlagNameCompletions(flag, toComplete)...) + } + } + + // We cannot use finalCmd.Flags() because we may not have called ParsedFlags() for commands + // that have set DisableFlagParsing; it is ParseFlags() that merges the inherited and + // non-inherited flags. + finalCmd.InheritedFlags().VisitAll(func(flag *pflag.Flag) { + doCompleteFlags(flag) + }) + finalCmd.NonInheritedFlags().VisitAll(func(flag *pflag.Flag) { + doCompleteFlags(flag) + }) + } + + directive = ShellCompDirectiveNoFileComp + if len(completions) == 1 && strings.HasSuffix(completions[0], "=") { + // If there is a single completion, the shell usually adds a space + // after the completion. We don't want that if the flag ends with an = + directive = ShellCompDirectiveNoSpace + } + + if !finalCmd.DisableFlagParsing { + // If DisableFlagParsing==false, we have completed the flags as known by Cobra; + // we can return what we found. + // If DisableFlagParsing==true, Cobra may not be aware of all flags, so we + // let the logic continue to see if ValidArgsFunction needs to be called. + return finalCmd, completions, directive, nil + } + } else { + directive = ShellCompDirectiveDefault + if flag == nil { + foundLocalNonPersistentFlag := false + // If TraverseChildren is true on the root command we don't check for + // local flags because we can use a local flag on a parent command + if !finalCmd.Root().TraverseChildren { + // Check if there are any local, non-persistent flags on the command-line + localNonPersistentFlags := finalCmd.LocalNonPersistentFlags() + finalCmd.NonInheritedFlags().VisitAll(func(flag *pflag.Flag) { + if localNonPersistentFlags.Lookup(flag.Name) != nil && flag.Changed { + foundLocalNonPersistentFlag = true + } + }) + } + + // Complete subcommand names, including the help command + if len(finalArgs) == 0 && !foundLocalNonPersistentFlag { + // We only complete sub-commands if: + // - there are no arguments on the command-line and + // - there are no local, non-persistent flags on the command-line or TraverseChildren is true + for _, subCmd := range finalCmd.Commands() { + if subCmd.IsAvailableCommand() || subCmd == finalCmd.helpCommand { + if strings.HasPrefix(subCmd.Name(), toComplete) { + completions = append(completions, fmt.Sprintf("%s\t%s", subCmd.Name(), subCmd.Short)) + } + directive = ShellCompDirectiveNoFileComp + } + } + } + + // Complete required flags even without the '-' prefix + completions = append(completions, completeRequireFlags(finalCmd, toComplete)...) + + // Always complete ValidArgs, even if we are completing a subcommand name. + // This is for commands that have both subcommands and ValidArgs. + if len(finalCmd.ValidArgs) > 0 { + if len(finalArgs) == 0 { + // ValidArgs are only for the first argument + for _, validArg := range finalCmd.ValidArgs { + if strings.HasPrefix(validArg, toComplete) { + completions = append(completions, validArg) + } + } + directive = ShellCompDirectiveNoFileComp + + // If no completions were found within commands or ValidArgs, + // see if there are any ArgAliases that should be completed. + if len(completions) == 0 { + for _, argAlias := range finalCmd.ArgAliases { + if strings.HasPrefix(argAlias, toComplete) { + completions = append(completions, argAlias) + } + } + } + } + + // If there are ValidArgs specified (even if they don't match), we stop completion. + // Only one of ValidArgs or ValidArgsFunction can be used for a single command. + return finalCmd, completions, directive, nil + } + + // Let the logic continue so as to add any ValidArgsFunction completions, + // even if we already found sub-commands. + // This is for commands that have subcommands but also specify a ValidArgsFunction. + } + } + + // Find the completion function for the flag or command + var completionFn func(cmd *Command, args []string, toComplete string) ([]string, ShellCompDirective) + if flag != nil && flagCompletion { + flagCompletionMutex.RLock() + completionFn = flagCompletionFunctions[flag] + flagCompletionMutex.RUnlock() + } else { + completionFn = finalCmd.ValidArgsFunction + } + if completionFn != nil { + // Go custom completion defined for this flag or command. + // Call the registered completion function to get the completions. + var comps []string + comps, directive = completionFn(finalCmd, finalArgs, toComplete) + completions = append(completions, comps...) + } + + return finalCmd, completions, directive, nil +} + +func helpOrVersionFlagPresent(cmd *Command) bool { + if versionFlag := cmd.Flags().Lookup("version"); versionFlag != nil && + len(versionFlag.Annotations[FlagSetByCobraAnnotation]) > 0 && versionFlag.Changed { + return true + } + if helpFlag := cmd.Flags().Lookup("help"); helpFlag != nil && + len(helpFlag.Annotations[FlagSetByCobraAnnotation]) > 0 && helpFlag.Changed { + return true + } + return false +} + +func getFlagNameCompletions(flag *pflag.Flag, toComplete string) []string { + if nonCompletableFlag(flag) { + return []string{} + } + + var completions []string + flagName := "--" + flag.Name + if strings.HasPrefix(flagName, toComplete) { + // Flag without the = + completions = append(completions, fmt.Sprintf("%s\t%s", flagName, flag.Usage)) + + // Why suggest both long forms: --flag and --flag= ? + // This forces the user to *always* have to type either an = or a space after the flag name. + // Let's be nice and avoid making users have to do that. + // Since boolean flags and shortname flags don't show the = form, let's go that route and never show it. + // The = form will still work, we just won't suggest it. + // This also makes the list of suggested flags shorter as we avoid all the = forms. + // + // if len(flag.NoOptDefVal) == 0 { + // // Flag requires a value, so it can be suffixed with = + // flagName += "=" + // completions = append(completions, fmt.Sprintf("%s\t%s", flagName, flag.Usage)) + // } + } + + flagName = "-" + flag.Shorthand + if len(flag.Shorthand) > 0 && strings.HasPrefix(flagName, toComplete) { + completions = append(completions, fmt.Sprintf("%s\t%s", flagName, flag.Usage)) + } + + return completions +} + +func completeRequireFlags(finalCmd *Command, toComplete string) []string { + var completions []string + + doCompleteRequiredFlags := func(flag *pflag.Flag) { + if _, present := flag.Annotations[BashCompOneRequiredFlag]; present { + if !flag.Changed { + // If the flag is not already present, we suggest it as a completion + completions = append(completions, getFlagNameCompletions(flag, toComplete)...) + } + } + } + + // We cannot use finalCmd.Flags() because we may not have called ParsedFlags() for commands + // that have set DisableFlagParsing; it is ParseFlags() that merges the inherited and + // non-inherited flags. + finalCmd.InheritedFlags().VisitAll(func(flag *pflag.Flag) { + doCompleteRequiredFlags(flag) + }) + finalCmd.NonInheritedFlags().VisitAll(func(flag *pflag.Flag) { + doCompleteRequiredFlags(flag) + }) + + return completions +} + +func checkIfFlagCompletion(finalCmd *Command, args []string, lastArg string) (*pflag.Flag, []string, string, error) { + if finalCmd.DisableFlagParsing { + // We only do flag completion if we are allowed to parse flags + // This is important for commands which have requested to do their own flag completion. + return nil, args, lastArg, nil + } + + var flagName string + trimmedArgs := args + flagWithEqual := false + orgLastArg := lastArg + + // When doing completion of a flag name, as soon as an argument starts with + // a '-' we know it is a flag. We cannot use isFlagArg() here as that function + // requires the flag name to be complete + if len(lastArg) > 0 && lastArg[0] == '-' { + if index := strings.Index(lastArg, "="); index >= 0 { + // Flag with an = + if strings.HasPrefix(lastArg[:index], "--") { + // Flag has full name + flagName = lastArg[2:index] + } else { + // Flag is shorthand + // We have to get the last shorthand flag name + // e.g. `-asd` => d to provide the correct completion + // https://github.com/spf13/cobra/issues/1257 + flagName = lastArg[index-1 : index] + } + lastArg = lastArg[index+1:] + flagWithEqual = true + } else { + // Normal flag completion + return nil, args, lastArg, nil + } + } + + if len(flagName) == 0 { + if len(args) > 0 { + prevArg := args[len(args)-1] + if isFlagArg(prevArg) { + // Only consider the case where the flag does not contain an =. + // If the flag contains an = it means it has already been fully processed, + // so we don't need to deal with it here. + if index := strings.Index(prevArg, "="); index < 0 { + if strings.HasPrefix(prevArg, "--") { + // Flag has full name + flagName = prevArg[2:] + } else { + // Flag is shorthand + // We have to get the last shorthand flag name + // e.g. `-asd` => d to provide the correct completion + // https://github.com/spf13/cobra/issues/1257 + flagName = prevArg[len(prevArg)-1:] + } + // Remove the uncompleted flag or else there could be an error created + // for an invalid value for that flag + trimmedArgs = args[:len(args)-1] + } + } + } + } + + if len(flagName) == 0 { + // Not doing flag completion + return nil, trimmedArgs, lastArg, nil + } + + flag := findFlag(finalCmd, flagName) + if flag == nil { + // Flag not supported by this command, the interspersed option might be set so return the original args + return nil, args, orgLastArg, &flagCompError{subCommand: finalCmd.Name(), flagName: flagName} + } + + if !flagWithEqual { + if len(flag.NoOptDefVal) != 0 { + // We had assumed dealing with a two-word flag but the flag is a boolean flag. + // In that case, there is no value following it, so we are not really doing flag completion. + // Reset everything to do noun completion. + trimmedArgs = args + flag = nil + } + } + + return flag, trimmedArgs, lastArg, nil +} + +// InitDefaultCompletionCmd adds a default 'completion' command to c. +// This function will do nothing if any of the following is true: +// 1- the feature has been explicitly disabled by the program, +// 2- c has no subcommands (to avoid creating one), +// 3- c already has a 'completion' command provided by the program. +func (c *Command) InitDefaultCompletionCmd() { + if c.CompletionOptions.DisableDefaultCmd || !c.HasSubCommands() { + return + } + + for _, cmd := range c.commands { + if cmd.Name() == compCmdName || cmd.HasAlias(compCmdName) { + // A completion command is already available + return + } + } + + haveNoDescFlag := !c.CompletionOptions.DisableNoDescFlag && !c.CompletionOptions.DisableDescriptions + + completionCmd := &Command{ + Use: compCmdName, + Short: "Generate the autocompletion script for the specified shell", + Long: fmt.Sprintf(`Generate the autocompletion script for %[1]s for the specified shell. +See each sub-command's help for details on how to use the generated script. +`, c.Root().Name()), + Args: NoArgs, + ValidArgsFunction: NoFileCompletions, + Hidden: c.CompletionOptions.HiddenDefaultCmd, + GroupID: c.completionCommandGroupID, + } + c.AddCommand(completionCmd) + + out := c.OutOrStdout() + noDesc := c.CompletionOptions.DisableDescriptions + shortDesc := "Generate the autocompletion script for %s" + bash := &Command{ + Use: "bash", + Short: fmt.Sprintf(shortDesc, "bash"), + Long: fmt.Sprintf(`Generate the autocompletion script for the bash shell. + +This script depends on the 'bash-completion' package. +If it is not installed already, you can install it via your OS's package manager. + +To load completions in your current shell session: + + source <(%[1]s completion bash) + +To load completions for every new session, execute once: + +#### Linux: + + %[1]s completion bash > /etc/bash_completion.d/%[1]s + +#### macOS: + + %[1]s completion bash > $(brew --prefix)/etc/bash_completion.d/%[1]s + +You will need to start a new shell for this setup to take effect. +`, c.Root().Name()), + Args: NoArgs, + DisableFlagsInUseLine: true, + ValidArgsFunction: NoFileCompletions, + RunE: func(cmd *Command, args []string) error { + return cmd.Root().GenBashCompletionV2(out, !noDesc) + }, + } + if haveNoDescFlag { + bash.Flags().BoolVar(&noDesc, compCmdNoDescFlagName, compCmdNoDescFlagDefault, compCmdNoDescFlagDesc) + } + + zsh := &Command{ + Use: "zsh", + Short: fmt.Sprintf(shortDesc, "zsh"), + Long: fmt.Sprintf(`Generate the autocompletion script for the zsh shell. + +If shell completion is not already enabled in your environment you will need +to enable it. You can execute the following once: + + echo "autoload -U compinit; compinit" >> ~/.zshrc + +To load completions in your current shell session: + + source <(%[1]s completion zsh); compdef _%[1]s %[1]s + +To load completions for every new session, execute once: + +#### Linux: + + %[1]s completion zsh > "${fpath[1]}/_%[1]s" + +#### macOS: + + %[1]s completion zsh > $(brew --prefix)/share/zsh/site-functions/_%[1]s + +You will need to start a new shell for this setup to take effect. +`, c.Root().Name()), + Args: NoArgs, + ValidArgsFunction: NoFileCompletions, + RunE: func(cmd *Command, args []string) error { + if noDesc { + return cmd.Root().GenZshCompletionNoDesc(out) + } + return cmd.Root().GenZshCompletion(out) + }, + } + if haveNoDescFlag { + zsh.Flags().BoolVar(&noDesc, compCmdNoDescFlagName, compCmdNoDescFlagDefault, compCmdNoDescFlagDesc) + } + + fish := &Command{ + Use: "fish", + Short: fmt.Sprintf(shortDesc, "fish"), + Long: fmt.Sprintf(`Generate the autocompletion script for the fish shell. + +To load completions in your current shell session: + + %[1]s completion fish | source + +To load completions for every new session, execute once: + + %[1]s completion fish > ~/.config/fish/completions/%[1]s.fish + +You will need to start a new shell for this setup to take effect. +`, c.Root().Name()), + Args: NoArgs, + ValidArgsFunction: NoFileCompletions, + RunE: func(cmd *Command, args []string) error { + return cmd.Root().GenFishCompletion(out, !noDesc) + }, + } + if haveNoDescFlag { + fish.Flags().BoolVar(&noDesc, compCmdNoDescFlagName, compCmdNoDescFlagDefault, compCmdNoDescFlagDesc) + } + + powershell := &Command{ + Use: "powershell", + Short: fmt.Sprintf(shortDesc, "powershell"), + Long: fmt.Sprintf(`Generate the autocompletion script for powershell. + +To load completions in your current shell session: + + %[1]s completion powershell | Out-String | Invoke-Expression + +To load completions for every new session, add the output of the above command +to your powershell profile. +`, c.Root().Name()), + Args: NoArgs, + ValidArgsFunction: NoFileCompletions, + RunE: func(cmd *Command, args []string) error { + if noDesc { + return cmd.Root().GenPowerShellCompletion(out) + } + return cmd.Root().GenPowerShellCompletionWithDesc(out) + + }, + } + if haveNoDescFlag { + powershell.Flags().BoolVar(&noDesc, compCmdNoDescFlagName, compCmdNoDescFlagDefault, compCmdNoDescFlagDesc) + } + + completionCmd.AddCommand(bash, zsh, fish, powershell) +} + +func findFlag(cmd *Command, name string) *pflag.Flag { + flagSet := cmd.Flags() + if len(name) == 1 { + // First convert the short flag into a long flag + // as the cmd.Flag() search only accepts long flags + if short := flagSet.ShorthandLookup(name); short != nil { + name = short.Name + } else { + set := cmd.InheritedFlags() + if short = set.ShorthandLookup(name); short != nil { + name = short.Name + } else { + return nil + } + } + } + return cmd.Flag(name) +} + +// CompDebug prints the specified string to the same file as where the +// completion script prints its logs. +// Note that completion printouts should never be on stdout as they would +// be wrongly interpreted as actual completion choices by the completion script. +func CompDebug(msg string, printToStdErr bool) { + msg = fmt.Sprintf("[Debug] %s", msg) + + // Such logs are only printed when the user has set the environment + // variable BASH_COMP_DEBUG_FILE to the path of some file to be used. + if path := os.Getenv("BASH_COMP_DEBUG_FILE"); path != "" { + f, err := os.OpenFile(path, + os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644) + if err == nil { + defer f.Close() + WriteStringAndCheck(f, msg) + } + } + + if printToStdErr { + // Must print to stderr for this not to be read by the completion script. + fmt.Fprint(os.Stderr, msg) + } +} + +// CompDebugln prints the specified string with a newline at the end +// to the same file as where the completion script prints its logs. +// Such logs are only printed when the user has set the environment +// variable BASH_COMP_DEBUG_FILE to the path of some file to be used. +func CompDebugln(msg string, printToStdErr bool) { + CompDebug(fmt.Sprintf("%s\n", msg), printToStdErr) +} + +// CompError prints the specified completion message to stderr. +func CompError(msg string) { + msg = fmt.Sprintf("[Error] %s", msg) + CompDebug(msg, true) +} + +// CompErrorln prints the specified completion message to stderr with a newline at the end. +func CompErrorln(msg string) { + CompError(fmt.Sprintf("%s\n", msg)) +} diff --git a/vendor/github.com/spf13/cobra/doc/README.md b/vendor/github.com/spf13/cobra/doc/README.md new file mode 100644 index 000000000..8e07baae3 --- /dev/null +++ b/vendor/github.com/spf13/cobra/doc/README.md @@ -0,0 +1,17 @@ +# Documentation generation + +- [Man page docs](./man_docs.md) +- [Markdown docs](./md_docs.md) +- [Rest docs](./rest_docs.md) +- [Yaml docs](./yaml_docs.md) + +## Options +### `DisableAutoGenTag` + +You may set `cmd.DisableAutoGenTag = true` +to _entirely_ remove the auto generated string "Auto generated by spf13/cobra..." +from any documentation source. + +### `InitDefaultCompletionCmd` + +You may call `cmd.InitDefaultCompletionCmd()` to document the default autocompletion command. diff --git a/vendor/github.com/spf13/cobra/doc/man_docs.go b/vendor/github.com/spf13/cobra/doc/man_docs.go index 4a0623393..b5a2c596e 100644 --- a/vendor/github.com/spf13/cobra/doc/man_docs.go +++ b/vendor/github.com/spf13/cobra/doc/man_docs.go @@ -1,9 +1,10 @@ -// Copyright 2015 Red Hat Inc. All rights reserved. +// Copyright 2013-2022 The Cobra Authors // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at -// http://www.apache.org/licenses/LICENSE-2.0 +// +// http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, @@ -24,7 +25,7 @@ import ( "strings" "time" - "github.com/cpuguy83/go-md2man/md2man" + "github.com/cpuguy83/go-md2man/v2/md2man" "github.com/spf13/cobra" "github.com/spf13/pflag" ) @@ -66,7 +67,7 @@ func GenManTreeFromOpts(cmd *cobra.Command, opts GenManTreeOptions) error { if opts.CommandSeparator != "" { separator = opts.CommandSeparator } - basename := strings.Replace(cmd.CommandPath(), " ", separator, -1) + basename := strings.ReplaceAll(cmd.CommandPath(), " ", separator) filename := filepath.Join(opts.Path, basename+"."+section) f, err := os.Create(filename) if err != nil { @@ -105,7 +106,7 @@ func GenMan(cmd *cobra.Command, header *GenManHeader, w io.Writer) error { if header == nil { header = &GenManHeader{} } - if err := fillHeader(header, cmd.CommandPath()); err != nil { + if err := fillHeader(header, cmd.CommandPath(), cmd.DisableAutoGenTag); err != nil { return err } @@ -114,9 +115,9 @@ func GenMan(cmd *cobra.Command, header *GenManHeader, w io.Writer) error { return err } -func fillHeader(header *GenManHeader, name string) error { +func fillHeader(header *GenManHeader, name string, disableAutoGen bool) error { if header.Title == "" { - header.Title = strings.ToUpper(strings.Replace(name, " ", "\\-", -1)) + header.Title = strings.ToUpper(strings.ReplaceAll(name, " ", "\\-")) } if header.Section == "" { header.Section = "1" @@ -133,31 +134,29 @@ func fillHeader(header *GenManHeader, name string) error { header.Date = &now } header.date = (*header.Date).Format("Jan 2006") - if header.Source == "" { + if header.Source == "" && !disableAutoGen { header.Source = "Auto generated by spf13/cobra" } return nil } -func manPreamble(buf *bytes.Buffer, header *GenManHeader, cmd *cobra.Command, dashedName string) { +func manPreamble(buf io.StringWriter, header *GenManHeader, cmd *cobra.Command, dashedName string) { description := cmd.Long if len(description) == 0 { description = cmd.Short } - buf.WriteString(fmt.Sprintf(`%% %s(%s)%s -%% %s -%% %s + cobra.WriteStringAndCheck(buf, fmt.Sprintf(`%% "%s" "%s" "%s" "%s" "%s" # NAME `, header.Title, header.Section, header.date, header.Source, header.Manual)) - buf.WriteString(fmt.Sprintf("%s \\- %s\n\n", dashedName, cmd.Short)) - buf.WriteString("# SYNOPSIS\n") - buf.WriteString(fmt.Sprintf("**%s**\n\n", cmd.UseLine())) - buf.WriteString("# DESCRIPTION\n") - buf.WriteString(description + "\n\n") + cobra.WriteStringAndCheck(buf, fmt.Sprintf("%s \\- %s\n\n", dashedName, cmd.Short)) + cobra.WriteStringAndCheck(buf, "# SYNOPSIS\n") + cobra.WriteStringAndCheck(buf, fmt.Sprintf("**%s**\n\n", cmd.UseLine())) + cobra.WriteStringAndCheck(buf, "# DESCRIPTION\n") + cobra.WriteStringAndCheck(buf, description+"\n\n") } -func manPrintFlags(buf *bytes.Buffer, flags *pflag.FlagSet) { +func manPrintFlags(buf io.StringWriter, flags *pflag.FlagSet) { flags.VisitAll(func(flag *pflag.Flag) { if len(flag.Deprecated) > 0 || flag.Hidden { return @@ -181,22 +180,22 @@ func manPrintFlags(buf *bytes.Buffer, flags *pflag.FlagSet) { format += "]" } format += "\n\t%s\n\n" - buf.WriteString(fmt.Sprintf(format, flag.DefValue, flag.Usage)) + cobra.WriteStringAndCheck(buf, fmt.Sprintf(format, flag.DefValue, flag.Usage)) }) } -func manPrintOptions(buf *bytes.Buffer, command *cobra.Command) { +func manPrintOptions(buf io.StringWriter, command *cobra.Command) { flags := command.NonInheritedFlags() if flags.HasAvailableFlags() { - buf.WriteString("# OPTIONS\n") + cobra.WriteStringAndCheck(buf, "# OPTIONS\n") manPrintFlags(buf, flags) - buf.WriteString("\n") + cobra.WriteStringAndCheck(buf, "\n") } flags = command.InheritedFlags() if flags.HasAvailableFlags() { - buf.WriteString("# OPTIONS INHERITED FROM PARENT COMMANDS\n") + cobra.WriteStringAndCheck(buf, "# OPTIONS INHERITED FROM PARENT COMMANDS\n") manPrintFlags(buf, flags) - buf.WriteString("\n") + cobra.WriteStringAndCheck(buf, "\n") } } @@ -205,7 +204,7 @@ func genMan(cmd *cobra.Command, header *GenManHeader) []byte { cmd.InitDefaultHelpFlag() // something like `rootcmd-subcmd1-subcmd2` - dashCommandName := strings.Replace(cmd.CommandPath(), " ", "-", -1) + dashCommandName := strings.ReplaceAll(cmd.CommandPath(), " ", "-") buf := new(bytes.Buffer) @@ -220,7 +219,7 @@ func genMan(cmd *cobra.Command, header *GenManHeader) []byte { seealsos := make([]string, 0) if cmd.HasParent() { parentPath := cmd.Parent().CommandPath() - dashParentPath := strings.Replace(parentPath, " ", "-", -1) + dashParentPath := strings.ReplaceAll(parentPath, " ", "-") seealso := fmt.Sprintf("**%s(%s)**", dashParentPath, header.Section) seealsos = append(seealsos, seealso) cmd.VisitParents(func(c *cobra.Command) { diff --git a/vendor/github.com/spf13/cobra/doc/md_docs.go b/vendor/github.com/spf13/cobra/doc/md_docs.go index d76f6d5ec..bab4b4963 100644 --- a/vendor/github.com/spf13/cobra/doc/md_docs.go +++ b/vendor/github.com/spf13/cobra/doc/md_docs.go @@ -1,9 +1,10 @@ -//Copyright 2015 Red Hat Inc. All rights reserved. +// Copyright 2013-2022 The Cobra Authors // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at -// http://www.apache.org/licenses/LICENSE-2.0 +// +// http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, @@ -58,16 +59,12 @@ func GenMarkdownCustom(cmd *cobra.Command, w io.Writer, linkHandler func(string) buf := new(bytes.Buffer) name := cmd.CommandPath() - short := cmd.Short - long := cmd.Long - if len(long) == 0 { - long = short - } - buf.WriteString("## " + name + "\n\n") - buf.WriteString(short + "\n\n") - buf.WriteString("### Synopsis\n\n") - buf.WriteString(long + "\n\n") + buf.WriteString(cmd.Short + "\n\n") + if len(cmd.Long) > 0 { + buf.WriteString("### Synopsis\n\n") + buf.WriteString(cmd.Long + "\n\n") + } if cmd.Runnable() { buf.WriteString(fmt.Sprintf("```\n%s\n```\n\n", cmd.UseLine())) @@ -87,7 +84,7 @@ func GenMarkdownCustom(cmd *cobra.Command, w io.Writer, linkHandler func(string) parent := cmd.Parent() pname := parent.CommandPath() link := pname + ".md" - link = strings.Replace(link, " ", "_", -1) + link = strings.ReplaceAll(link, " ", "_") buf.WriteString(fmt.Sprintf("* [%s](%s)\t - %s\n", pname, linkHandler(link), parent.Short)) cmd.VisitParents(func(c *cobra.Command) { if c.DisableAutoGenTag { @@ -105,7 +102,7 @@ func GenMarkdownCustom(cmd *cobra.Command, w io.Writer, linkHandler func(string) } cname := name + " " + child.Name() link := cname + ".md" - link = strings.Replace(link, " ", "_", -1) + link = strings.ReplaceAll(link, " ", "_") buf.WriteString(fmt.Sprintf("* [%s](%s)\t - %s\n", cname, linkHandler(link), child.Short)) } buf.WriteString("\n") @@ -141,7 +138,7 @@ func GenMarkdownTreeCustom(cmd *cobra.Command, dir string, filePrepender, linkHa } } - basename := strings.Replace(cmd.CommandPath(), " ", "_", -1) + ".md" + basename := strings.ReplaceAll(cmd.CommandPath(), " ", "_") + ".md" filename := filepath.Join(dir, basename) f, err := os.Create(filename) if err != nil { diff --git a/vendor/github.com/spf13/cobra/doc/md_docs.md b/vendor/github.com/spf13/cobra/doc/md_docs.md index 56ce9fe81..1659175cf 100644 --- a/vendor/github.com/spf13/cobra/doc/md_docs.md +++ b/vendor/github.com/spf13/cobra/doc/md_docs.md @@ -1,6 +1,6 @@ # Generating Markdown Docs For Your Own cobra.Command -Generating man pages from a cobra command is incredibly easy. An example is as follows: +Generating Markdown pages from a cobra command is incredibly easy. An example is as follows: ```go package main @@ -85,7 +85,7 @@ func GenMarkdownCustom(cmd *Command, out *bytes.Buffer, linkHandler func(string) } ``` -The `filePrepender` will prepend the return value given the full filepath to the rendered Markdown file. A common use case is to add front matter to use the generated documentation with [Hugo](http://gohugo.io/): +The `filePrepender` will prepend the return value given the full filepath to the rendered Markdown file. A common use case is to add front matter to use the generated documentation with [Hugo](https://gohugo.io/): ```go const fmTemplate = `--- diff --git a/vendor/github.com/spf13/cobra/doc/rest_docs.go b/vendor/github.com/spf13/cobra/doc/rest_docs.go index 051d8dc83..d65890652 100644 --- a/vendor/github.com/spf13/cobra/doc/rest_docs.go +++ b/vendor/github.com/spf13/cobra/doc/rest_docs.go @@ -1,9 +1,10 @@ -//Copyright 2015 Red Hat Inc. All rights reserved. +// Copyright 2013-2022 The Cobra Authors // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at -// http://www.apache.org/licenses/LICENSE-2.0 +// +// http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, @@ -70,7 +71,7 @@ func GenReSTCustom(cmd *cobra.Command, w io.Writer, linkHandler func(string, str if len(long) == 0 { long = short } - ref := strings.Replace(name, " ", "_", -1) + ref := strings.ReplaceAll(name, " ", "_") buf.WriteString(".. _" + ref + ":\n\n") buf.WriteString(name + "\n") @@ -99,7 +100,7 @@ func GenReSTCustom(cmd *cobra.Command, w io.Writer, linkHandler func(string, str if cmd.HasParent() { parent := cmd.Parent() pname := parent.CommandPath() - ref = strings.Replace(pname, " ", "_", -1) + ref = strings.ReplaceAll(pname, " ", "_") buf.WriteString(fmt.Sprintf("* %s \t - %s\n", linkHandler(pname, ref), parent.Short)) cmd.VisitParents(func(c *cobra.Command) { if c.DisableAutoGenTag { @@ -116,7 +117,7 @@ func GenReSTCustom(cmd *cobra.Command, w io.Writer, linkHandler func(string, str continue } cname := name + " " + child.Name() - ref = strings.Replace(cname, " ", "_", -1) + ref = strings.ReplaceAll(cname, " ", "_") buf.WriteString(fmt.Sprintf("* %s \t - %s\n", linkHandler(cname, ref), child.Short)) } buf.WriteString("\n") @@ -151,7 +152,7 @@ func GenReSTTreeCustom(cmd *cobra.Command, dir string, filePrepender func(string } } - basename := strings.Replace(cmd.CommandPath(), " ", "_", -1) + ".rst" + basename := strings.ReplaceAll(cmd.CommandPath(), " ", "_") + ".rst" filename := filepath.Join(dir, basename) f, err := os.Create(filename) if err != nil { diff --git a/vendor/github.com/spf13/cobra/doc/rest_docs.md b/vendor/github.com/spf13/cobra/doc/rest_docs.md index 6098430ef..3041c573a 100644 --- a/vendor/github.com/spf13/cobra/doc/rest_docs.md +++ b/vendor/github.com/spf13/cobra/doc/rest_docs.md @@ -85,7 +85,7 @@ func GenReSTCustom(cmd *Command, out *bytes.Buffer, linkHandler func(string, str } ``` -The `filePrepender` will prepend the return value given the full filepath to the rendered ReST file. A common use case is to add front matter to use the generated documentation with [Hugo](http://gohugo.io/): +The `filePrepender` will prepend the return value given the full filepath to the rendered ReST file. A common use case is to add front matter to use the generated documentation with [Hugo](https://gohugo.io/): ```go const fmTemplate = `--- diff --git a/vendor/github.com/spf13/cobra/doc/util.go b/vendor/github.com/spf13/cobra/doc/util.go index 8d3dbecec..499ecdd91 100644 --- a/vendor/github.com/spf13/cobra/doc/util.go +++ b/vendor/github.com/spf13/cobra/doc/util.go @@ -1,9 +1,10 @@ -// Copyright 2015 Red Hat Inc. All rights reserved. +// Copyright 2013-2022 The Cobra Authors // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at -// http://www.apache.org/licenses/LICENSE-2.0 +// +// http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, @@ -20,7 +21,7 @@ import ( ) // Test to see if we have a reason to print See Also information in docs -// Basically this is a test for a parent commend or a subcommand which is +// Basically this is a test for a parent command or a subcommand which is // both not deprecated and not the autogenerated help command. func hasSeeAlso(cmd *cobra.Command) bool { if cmd.HasParent() { diff --git a/vendor/github.com/spf13/cobra/doc/yaml_docs.go b/vendor/github.com/spf13/cobra/doc/yaml_docs.go index ea00af07e..12f8cf33b 100644 --- a/vendor/github.com/spf13/cobra/doc/yaml_docs.go +++ b/vendor/github.com/spf13/cobra/doc/yaml_docs.go @@ -1,9 +1,10 @@ -// Copyright 2016 French Ben. All rights reserved. +// Copyright 2013-2022 The Cobra Authors // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at -// http://www.apache.org/licenses/LICENSE-2.0 +// +// http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, @@ -23,7 +24,7 @@ import ( "github.com/spf13/cobra" "github.com/spf13/pflag" - "gopkg.in/yaml.v2" + "gopkg.in/yaml.v3" ) type cmdOption struct { @@ -37,6 +38,7 @@ type cmdDoc struct { Name string Synopsis string `yaml:",omitempty"` Description string `yaml:",omitempty"` + Usage string `yaml:",omitempty"` Options []cmdOption `yaml:",omitempty"` InheritedOptions []cmdOption `yaml:"inherited_options,omitempty"` Example string `yaml:",omitempty"` @@ -65,7 +67,7 @@ func GenYamlTreeCustom(cmd *cobra.Command, dir string, filePrepender, linkHandle } } - basename := strings.Replace(cmd.CommandPath(), " ", "_", -1) + ".yaml" + basename := strings.ReplaceAll(cmd.CommandPath(), " ", "_") + ".yaml" filename := filepath.Join(dir, basename) f, err := os.Create(filename) if err != nil { @@ -98,6 +100,10 @@ func GenYamlCustom(cmd *cobra.Command, w io.Writer, linkHandler func(string) str yamlDoc.Synopsis = forceMultiLine(cmd.Short) yamlDoc.Description = forceMultiLine(cmd.Long) + if cmd.Runnable() { + yamlDoc.Usage = cmd.UseLine() + } + if len(cmd.Example) > 0 { yamlDoc.Example = cmd.Example } @@ -123,7 +129,7 @@ func GenYamlCustom(cmd *cobra.Command, w io.Writer, linkHandler func(string) str if !child.IsAvailableCommand() || child.IsAdditionalHelpTopicCommand() { continue } - result = append(result, child.Name()+" - "+child.Short) + result = append(result, child.CommandPath()+" - "+child.Short) } yamlDoc.SeeAlso = result } diff --git a/vendor/github.com/spf13/cobra/doc/yaml_docs.md b/vendor/github.com/spf13/cobra/doc/yaml_docs.md index 1a9b7c6a3..172e61d12 100644 --- a/vendor/github.com/spf13/cobra/doc/yaml_docs.md +++ b/vendor/github.com/spf13/cobra/doc/yaml_docs.md @@ -82,7 +82,7 @@ func GenYamlCustom(cmd *Command, out *bytes.Buffer, linkHandler func(string) str } ``` -The `filePrepender` will prepend the return value given the full filepath to the rendered Yaml file. A common use case is to add front matter to use the generated documentation with [Hugo](http://gohugo.io/): +The `filePrepender` will prepend the return value given the full filepath to the rendered Yaml file. A common use case is to add front matter to use the generated documentation with [Hugo](https://gohugo.io/): ```go const fmTemplate = `--- diff --git a/vendor/github.com/spf13/cobra/fish_completions.go b/vendor/github.com/spf13/cobra/fish_completions.go new file mode 100644 index 000000000..97112a17b --- /dev/null +++ b/vendor/github.com/spf13/cobra/fish_completions.go @@ -0,0 +1,234 @@ +// Copyright 2013-2022 The Cobra Authors +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package cobra + +import ( + "bytes" + "fmt" + "io" + "os" + "strings" +) + +func genFishComp(buf io.StringWriter, name string, includeDesc bool) { + // Variables should not contain a '-' or ':' character + nameForVar := name + nameForVar = strings.ReplaceAll(nameForVar, "-", "_") + nameForVar = strings.ReplaceAll(nameForVar, ":", "_") + + compCmd := ShellCompRequestCmd + if !includeDesc { + compCmd = ShellCompNoDescRequestCmd + } + WriteStringAndCheck(buf, fmt.Sprintf("# fish completion for %-36s -*- shell-script -*-\n", name)) + WriteStringAndCheck(buf, fmt.Sprintf(` +function __%[1]s_debug + set -l file "$BASH_COMP_DEBUG_FILE" + if test -n "$file" + echo "$argv" >> $file + end +end + +function __%[1]s_perform_completion + __%[1]s_debug "Starting __%[1]s_perform_completion" + + # Extract all args except the last one + set -l args (commandline -opc) + # Extract the last arg and escape it in case it is a space + set -l lastArg (string escape -- (commandline -ct)) + + __%[1]s_debug "args: $args" + __%[1]s_debug "last arg: $lastArg" + + # Disable ActiveHelp which is not supported for fish shell + set -l requestComp "%[9]s=0 $args[1] %[3]s $args[2..-1] $lastArg" + + __%[1]s_debug "Calling $requestComp" + set -l results (eval $requestComp 2> /dev/null) + + # Some programs may output extra empty lines after the directive. + # Let's ignore them or else it will break completion. + # Ref: https://github.com/spf13/cobra/issues/1279 + for line in $results[-1..1] + if test (string trim -- $line) = "" + # Found an empty line, remove it + set results $results[1..-2] + else + # Found non-empty line, we have our proper output + break + end + end + + set -l comps $results[1..-2] + set -l directiveLine $results[-1] + + # For Fish, when completing a flag with an = (e.g., -n=) + # completions must be prefixed with the flag + set -l flagPrefix (string match -r -- '-.*=' "$lastArg") + + __%[1]s_debug "Comps: $comps" + __%[1]s_debug "DirectiveLine: $directiveLine" + __%[1]s_debug "flagPrefix: $flagPrefix" + + for comp in $comps + printf "%%s%%s\n" "$flagPrefix" "$comp" + end + + printf "%%s\n" "$directiveLine" +end + +# This function does two things: +# - Obtain the completions and store them in the global __%[1]s_comp_results +# - Return false if file completion should be performed +function __%[1]s_prepare_completions + __%[1]s_debug "" + __%[1]s_debug "========= starting completion logic ==========" + + # Start fresh + set --erase __%[1]s_comp_results + + set -l results (__%[1]s_perform_completion) + __%[1]s_debug "Completion results: $results" + + if test -z "$results" + __%[1]s_debug "No completion, probably due to a failure" + # Might as well do file completion, in case it helps + return 1 + end + + set -l directive (string sub --start 2 $results[-1]) + set --global __%[1]s_comp_results $results[1..-2] + + __%[1]s_debug "Completions are: $__%[1]s_comp_results" + __%[1]s_debug "Directive is: $directive" + + set -l shellCompDirectiveError %[4]d + set -l shellCompDirectiveNoSpace %[5]d + set -l shellCompDirectiveNoFileComp %[6]d + set -l shellCompDirectiveFilterFileExt %[7]d + set -l shellCompDirectiveFilterDirs %[8]d + + if test -z "$directive" + set directive 0 + end + + set -l compErr (math (math --scale 0 $directive / $shellCompDirectiveError) %% 2) + if test $compErr -eq 1 + __%[1]s_debug "Received error directive: aborting." + # Might as well do file completion, in case it helps + return 1 + end + + set -l filefilter (math (math --scale 0 $directive / $shellCompDirectiveFilterFileExt) %% 2) + set -l dirfilter (math (math --scale 0 $directive / $shellCompDirectiveFilterDirs) %% 2) + if test $filefilter -eq 1; or test $dirfilter -eq 1 + __%[1]s_debug "File extension filtering or directory filtering not supported" + # Do full file completion instead + return 1 + end + + set -l nospace (math (math --scale 0 $directive / $shellCompDirectiveNoSpace) %% 2) + set -l nofiles (math (math --scale 0 $directive / $shellCompDirectiveNoFileComp) %% 2) + + __%[1]s_debug "nospace: $nospace, nofiles: $nofiles" + + # If we want to prevent a space, or if file completion is NOT disabled, + # we need to count the number of valid completions. + # To do so, we will filter on prefix as the completions we have received + # may not already be filtered so as to allow fish to match on different + # criteria than the prefix. + if test $nospace -ne 0; or test $nofiles -eq 0 + set -l prefix (commandline -t | string escape --style=regex) + __%[1]s_debug "prefix: $prefix" + + set -l completions (string match -r -- "^$prefix.*" $__%[1]s_comp_results) + set --global __%[1]s_comp_results $completions + __%[1]s_debug "Filtered completions are: $__%[1]s_comp_results" + + # Important not to quote the variable for count to work + set -l numComps (count $__%[1]s_comp_results) + __%[1]s_debug "numComps: $numComps" + + if test $numComps -eq 1; and test $nospace -ne 0 + # We must first split on \t to get rid of the descriptions to be + # able to check what the actual completion will be. + # We don't need descriptions anyway since there is only a single + # real completion which the shell will expand immediately. + set -l split (string split --max 1 \t $__%[1]s_comp_results[1]) + + # Fish won't add a space if the completion ends with any + # of the following characters: @=/:., + set -l lastChar (string sub -s -1 -- $split) + if not string match -r -q "[@=/:.,]" -- "$lastChar" + # In other cases, to support the "nospace" directive we trick the shell + # by outputting an extra, longer completion. + __%[1]s_debug "Adding second completion to perform nospace directive" + set --global __%[1]s_comp_results $split[1] $split[1]. + __%[1]s_debug "Completions are now: $__%[1]s_comp_results" + end + end + + if test $numComps -eq 0; and test $nofiles -eq 0 + # To be consistent with bash and zsh, we only trigger file + # completion when there are no other completions + __%[1]s_debug "Requesting file completion" + return 1 + end + end + + return 0 +end + +# Since Fish completions are only loaded once the user triggers them, we trigger them ourselves +# so we can properly delete any completions provided by another script. +# Only do this if the program can be found, or else fish may print some errors; besides, +# the existing completions will only be loaded if the program can be found. +if type -q "%[2]s" + # The space after the program name is essential to trigger completion for the program + # and not completion of the program name itself. + # Also, we use '> /dev/null 2>&1' since '&>' is not supported in older versions of fish. + complete --do-complete "%[2]s " > /dev/null 2>&1 +end + +# Remove any pre-existing completions for the program since we will be handling all of them. +complete -c %[2]s -e + +# The call to __%[1]s_prepare_completions will setup __%[1]s_comp_results +# which provides the program's completion choices. +complete -c %[2]s -n '__%[1]s_prepare_completions' -f -a '$__%[1]s_comp_results' + +`, nameForVar, name, compCmd, + ShellCompDirectiveError, ShellCompDirectiveNoSpace, ShellCompDirectiveNoFileComp, + ShellCompDirectiveFilterFileExt, ShellCompDirectiveFilterDirs, activeHelpEnvVar(name))) +} + +// GenFishCompletion generates fish completion file and writes to the passed writer. +func (c *Command) GenFishCompletion(w io.Writer, includeDesc bool) error { + buf := new(bytes.Buffer) + genFishComp(buf, c.Name(), includeDesc) + _, err := buf.WriteTo(w) + return err +} + +// GenFishCompletionFile generates fish completion file. +func (c *Command) GenFishCompletionFile(filename string, includeDesc bool) error { + outFile, err := os.Create(filename) + if err != nil { + return err + } + defer outFile.Close() + + return c.GenFishCompletion(outFile, includeDesc) +} diff --git a/vendor/github.com/spf13/cobra/fish_completions.md b/vendor/github.com/spf13/cobra/fish_completions.md new file mode 100644 index 000000000..19b2ed129 --- /dev/null +++ b/vendor/github.com/spf13/cobra/fish_completions.md @@ -0,0 +1,4 @@ +## Generating Fish Completions For Your cobra.Command + +Please refer to [Shell Completions](shell_completions.md) for details. + diff --git a/vendor/github.com/spf13/cobra/flag_groups.go b/vendor/github.com/spf13/cobra/flag_groups.go new file mode 100644 index 000000000..9c377aaf9 --- /dev/null +++ b/vendor/github.com/spf13/cobra/flag_groups.go @@ -0,0 +1,224 @@ +// Copyright 2013-2022 The Cobra Authors +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package cobra + +import ( + "fmt" + "sort" + "strings" + + flag "github.com/spf13/pflag" +) + +const ( + requiredAsGroup = "cobra_annotation_required_if_others_set" + mutuallyExclusive = "cobra_annotation_mutually_exclusive" +) + +// MarkFlagsRequiredTogether marks the given flags with annotations so that Cobra errors +// if the command is invoked with a subset (but not all) of the given flags. +func (c *Command) MarkFlagsRequiredTogether(flagNames ...string) { + c.mergePersistentFlags() + for _, v := range flagNames { + f := c.Flags().Lookup(v) + if f == nil { + panic(fmt.Sprintf("Failed to find flag %q and mark it as being required in a flag group", v)) + } + if err := c.Flags().SetAnnotation(v, requiredAsGroup, append(f.Annotations[requiredAsGroup], strings.Join(flagNames, " "))); err != nil { + // Only errs if the flag isn't found. + panic(err) + } + } +} + +// MarkFlagsMutuallyExclusive marks the given flags with annotations so that Cobra errors +// if the command is invoked with more than one flag from the given set of flags. +func (c *Command) MarkFlagsMutuallyExclusive(flagNames ...string) { + c.mergePersistentFlags() + for _, v := range flagNames { + f := c.Flags().Lookup(v) + if f == nil { + panic(fmt.Sprintf("Failed to find flag %q and mark it as being in a mutually exclusive flag group", v)) + } + // Each time this is called is a single new entry; this allows it to be a member of multiple groups if needed. + if err := c.Flags().SetAnnotation(v, mutuallyExclusive, append(f.Annotations[mutuallyExclusive], strings.Join(flagNames, " "))); err != nil { + panic(err) + } + } +} + +// ValidateFlagGroups validates the mutuallyExclusive/requiredAsGroup logic and returns the +// first error encountered. +func (c *Command) ValidateFlagGroups() error { + if c.DisableFlagParsing { + return nil + } + + flags := c.Flags() + + // groupStatus format is the list of flags as a unique ID, + // then a map of each flag name and whether it is set or not. + groupStatus := map[string]map[string]bool{} + mutuallyExclusiveGroupStatus := map[string]map[string]bool{} + flags.VisitAll(func(pflag *flag.Flag) { + processFlagForGroupAnnotation(flags, pflag, requiredAsGroup, groupStatus) + processFlagForGroupAnnotation(flags, pflag, mutuallyExclusive, mutuallyExclusiveGroupStatus) + }) + + if err := validateRequiredFlagGroups(groupStatus); err != nil { + return err + } + if err := validateExclusiveFlagGroups(mutuallyExclusiveGroupStatus); err != nil { + return err + } + return nil +} + +func hasAllFlags(fs *flag.FlagSet, flagnames ...string) bool { + for _, fname := range flagnames { + f := fs.Lookup(fname) + if f == nil { + return false + } + } + return true +} + +func processFlagForGroupAnnotation(flags *flag.FlagSet, pflag *flag.Flag, annotation string, groupStatus map[string]map[string]bool) { + groupInfo, found := pflag.Annotations[annotation] + if found { + for _, group := range groupInfo { + if groupStatus[group] == nil { + flagnames := strings.Split(group, " ") + + // Only consider this flag group at all if all the flags are defined. + if !hasAllFlags(flags, flagnames...) { + continue + } + + groupStatus[group] = map[string]bool{} + for _, name := range flagnames { + groupStatus[group][name] = false + } + } + + groupStatus[group][pflag.Name] = pflag.Changed + } + } +} + +func validateRequiredFlagGroups(data map[string]map[string]bool) error { + keys := sortedKeys(data) + for _, flagList := range keys { + flagnameAndStatus := data[flagList] + + unset := []string{} + for flagname, isSet := range flagnameAndStatus { + if !isSet { + unset = append(unset, flagname) + } + } + if len(unset) == len(flagnameAndStatus) || len(unset) == 0 { + continue + } + + // Sort values, so they can be tested/scripted against consistently. + sort.Strings(unset) + return fmt.Errorf("if any flags in the group [%v] are set they must all be set; missing %v", flagList, unset) + } + + return nil +} + +func validateExclusiveFlagGroups(data map[string]map[string]bool) error { + keys := sortedKeys(data) + for _, flagList := range keys { + flagnameAndStatus := data[flagList] + var set []string + for flagname, isSet := range flagnameAndStatus { + if isSet { + set = append(set, flagname) + } + } + if len(set) == 0 || len(set) == 1 { + continue + } + + // Sort values, so they can be tested/scripted against consistently. + sort.Strings(set) + return fmt.Errorf("if any flags in the group [%v] are set none of the others can be; %v were all set", flagList, set) + } + return nil +} + +func sortedKeys(m map[string]map[string]bool) []string { + keys := make([]string, len(m)) + i := 0 + for k := range m { + keys[i] = k + i++ + } + sort.Strings(keys) + return keys +} + +// enforceFlagGroupsForCompletion will do the following: +// - when a flag in a group is present, other flags in the group will be marked required +// - when a flag in a mutually exclusive group is present, other flags in the group will be marked as hidden +// This allows the standard completion logic to behave appropriately for flag groups +func (c *Command) enforceFlagGroupsForCompletion() { + if c.DisableFlagParsing { + return + } + + flags := c.Flags() + groupStatus := map[string]map[string]bool{} + mutuallyExclusiveGroupStatus := map[string]map[string]bool{} + c.Flags().VisitAll(func(pflag *flag.Flag) { + processFlagForGroupAnnotation(flags, pflag, requiredAsGroup, groupStatus) + processFlagForGroupAnnotation(flags, pflag, mutuallyExclusive, mutuallyExclusiveGroupStatus) + }) + + // If a flag that is part of a group is present, we make all the other flags + // of that group required so that the shell completion suggests them automatically + for flagList, flagnameAndStatus := range groupStatus { + for _, isSet := range flagnameAndStatus { + if isSet { + // One of the flags of the group is set, mark the other ones as required + for _, fName := range strings.Split(flagList, " ") { + _ = c.MarkFlagRequired(fName) + } + } + } + } + + // If a flag that is mutually exclusive to others is present, we hide the other + // flags of that group so the shell completion does not suggest them + for flagList, flagnameAndStatus := range mutuallyExclusiveGroupStatus { + for flagName, isSet := range flagnameAndStatus { + if isSet { + // One of the flags of the mutually exclusive group is set, mark the other ones as hidden + // Don't mark the flag that is already set as hidden because it may be an + // array or slice flag and therefore must continue being suggested + for _, fName := range strings.Split(flagList, " ") { + if fName != flagName { + flag := c.Flags().Lookup(fName) + flag.Hidden = true + } + } + } + } + } +} diff --git a/vendor/github.com/spf13/cobra/go.mod b/vendor/github.com/spf13/cobra/go.mod index 9a9eb65a3..a1309e536 100644 --- a/vendor/github.com/spf13/cobra/go.mod +++ b/vendor/github.com/spf13/cobra/go.mod @@ -1,13 +1,10 @@ module github.com/spf13/cobra -go 1.12 +go 1.15 require ( - github.com/BurntSushi/toml v0.3.1 // indirect - github.com/cpuguy83/go-md2man v1.0.10 - github.com/inconshreveable/mousetrap v1.0.0 - github.com/mitchellh/go-homedir v1.1.0 - github.com/spf13/pflag v1.0.3 - github.com/spf13/viper v1.3.2 - gopkg.in/yaml.v2 v2.2.2 + github.com/cpuguy83/go-md2man/v2 v2.0.2 + github.com/inconshreveable/mousetrap v1.0.1 + github.com/spf13/pflag v1.0.5 + gopkg.in/yaml.v3 v3.0.1 ) diff --git a/vendor/github.com/spf13/cobra/go.sum b/vendor/github.com/spf13/cobra/go.sum index 9761f4d03..a8c544e25 100644 --- a/vendor/github.com/spf13/cobra/go.sum +++ b/vendor/github.com/spf13/cobra/go.sum @@ -1,51 +1,12 @@ -github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ= -github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU= -github.com/armon/consul-api v0.0.0-20180202201655-eb2c6b5be1b6/go.mod h1:grANhF5doyWs3UAsr3K4I6qtAmlQcZDesFNEHPZAzj8= -github.com/coreos/etcd v3.3.10+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE= -github.com/coreos/go-etcd v2.0.0+incompatible/go.mod h1:Jez6KQU2B/sWsbdaef3ED8NzMklzPG4d5KIOhIy30Tk= -github.com/coreos/go-semver v0.2.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk= -github.com/cpuguy83/go-md2man v1.0.10 h1:BSKMNlYxDvnunlTymqtgONjNnaRV1sTpcovwwjF22jk= -github.com/cpuguy83/go-md2man v1.0.10/go.mod h1:SmD6nW6nTyfqj6ABTjUi3V3JVMnlJmwcJI5acqYI6dE= -github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c= -github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= -github.com/fsnotify/fsnotify v1.4.7 h1:IXs+QLmnXW2CcXuY+8Mzv/fWEsPGWxqefPtCP5CnV9I= -github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo= -github.com/hashicorp/hcl v1.0.0 h1:0Anlzjpi4vEasTeNFn2mLJgTSwt0+6sfsiTG8qcWGx4= -github.com/hashicorp/hcl v1.0.0/go.mod h1:E5yfLk+7swimpb2L/Alb/PJmXilQ/rhwaUYs4T20WEQ= -github.com/inconshreveable/mousetrap v1.0.0 h1:Z8tu5sraLXCXIcARxBp/8cbvlwVa7Z1NHg9XEKhtSvM= -github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANytuPF1OarO4DADm73n8= -github.com/magiconair/properties v1.8.0 h1:LLgXmsheXeRoUOBOjtwPQCWIYqM/LU1ayDtDePerRcY= -github.com/magiconair/properties v1.8.0/go.mod h1:PppfXfuXeibc/6YijjN8zIbojt8czPbwD3XqdrwzmxQ= -github.com/mitchellh/go-homedir v1.1.0 h1:lukF9ziXFxDFPkA1vsr5zpc1XuPDn/wFntq5mG+4E0Y= -github.com/mitchellh/go-homedir v1.1.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrkLzIz1N1q0pr0= -github.com/mitchellh/mapstructure v1.1.2 h1:fmNYVwqnSfB9mZU6OS2O6GsXM+wcskZDuKQzvN1EDeE= -github.com/mitchellh/mapstructure v1.1.2/go.mod h1:FVVH3fgwuzCH5S8UJGiWEs2h04kUh9fWfEaFds41c1Y= -github.com/pelletier/go-toml v1.2.0 h1:T5zMGML61Wp+FlcbWjRDT7yAxhJNAiPPLOFECq181zc= -github.com/pelletier/go-toml v1.2.0/go.mod h1:5z9KED0ma1S8pY6P1sdut58dfprrGBbd/94hg7ilaic= -github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM= -github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4= -github.com/russross/blackfriday v1.5.2 h1:HyvC0ARfnZBqnXwABFeSZHpKvJHJJfPz81GNueLj0oo= -github.com/russross/blackfriday v1.5.2/go.mod h1:JO/DiYxRf+HjHt06OyowR9PTA263kcR/rfWxYHBV53g= -github.com/spf13/afero v1.1.2 h1:m8/z1t7/fwjysjQRYbP0RD+bUIF/8tJwPdEZsI83ACI= -github.com/spf13/afero v1.1.2/go.mod h1:j4pytiNVoe2o6bmDsKpLACNPDBIoEAkihy7loJ1B0CQ= -github.com/spf13/cast v1.3.0 h1:oget//CVOEoFewqQxwr0Ej5yjygnqGkvggSE/gB35Q8= -github.com/spf13/cast v1.3.0/go.mod h1:Qx5cxh0v+4UWYiBimWS+eyWzqEqokIECu5etghLkUJE= -github.com/spf13/jwalterweatherman v1.0.0 h1:XHEdyB+EcvlqZamSM4ZOMGlc93t6AcsBEu9Gc1vn7yk= -github.com/spf13/jwalterweatherman v1.0.0/go.mod h1:cQK4TGJAtQXfYWX+Ddv3mKDzgVb68N+wFjFa4jdeBTo= -github.com/spf13/pflag v1.0.3 h1:zPAT6CGy6wXeQ7NtTnaTerfKOsV6V6F8agHXFiazDkg= -github.com/spf13/pflag v1.0.3/go.mod h1:DYY7MBk1bdzusC3SYhjObp+wFpr4gzcvqqNjLnInEg4= -github.com/spf13/viper v1.3.2 h1:VUFqw5KcqRf7i70GOzW7N+Q7+gxVBkSSqiXB12+JQ4M= -github.com/spf13/viper v1.3.2/go.mod h1:ZiWeW+zYFKm7srdB9IoDzzZXaJaI5eL9QjNiN/DMA2s= -github.com/stretchr/testify v1.2.2 h1:bSDNvY7ZPG5RlJ8otE/7V6gMiyenm9RtJ7IUVIAoJ1w= -github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs= -github.com/ugorji/go/codec v0.0.0-20181204163529-d75b2dcb6bc8/go.mod h1:VFNgLljTbGfSG7qAOspJ7OScBnGdDN/yBr0sguwnwf0= -github.com/xordataexchange/crypt v0.0.3-0.20170626215501-b2862e3d0a77/go.mod h1:aYKd//L2LvnjZzWKhF00oedf4jCCReLcmhLdhm1A27Q= -golang.org/x/crypto v0.0.0-20181203042331-505ab145d0a9/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4= -golang.org/x/sys v0.0.0-20181205085412-a5c9d58dba9a h1:1n5lsVfiQW3yfsRGu98756EH1YthsFqr/5mxHduZW2A= -golang.org/x/sys v0.0.0-20181205085412-a5c9d58dba9a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= -golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg= -golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ= +github.com/cpuguy83/go-md2man/v2 v2.0.2 h1:p1EgwI/C7NhT0JmVkwCD2ZBK8j4aeHQX2pMHHBfMQ6w= +github.com/cpuguy83/go-md2man/v2 v2.0.2/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o= +github.com/inconshreveable/mousetrap v1.0.1 h1:U3uMjPSQEBMNp1lFxmllqCPM6P5u/Xq7Pgzkat/bFNc= +github.com/inconshreveable/mousetrap v1.0.1/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw= +github.com/russross/blackfriday/v2 v2.1.0 h1:JIOH55/0cWyOuilr9/qlrm0BSXldqnqwMsf35Ld67mk= +github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM= +github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA= +github.com/spf13/pflag v1.0.5/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg= gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM= gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= -gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw= -gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= +gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA= +gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= diff --git a/vendor/github.com/spf13/cobra/powershell_completions.go b/vendor/github.com/spf13/cobra/powershell_completions.go index 756c61b9d..004de42e4 100644 --- a/vendor/github.com/spf13/cobra/powershell_completions.go +++ b/vendor/github.com/spf13/cobra/powershell_completions.go @@ -1,6 +1,17 @@ -// PowerShell completions are based on the amazing work from clap: -// https://github.com/clap-rs/clap/blob/3294d18efe5f264d12c9035f404c7d189d4824e1/src/completions/powershell.rs +// Copyright 2013-2022 The Cobra Authors // +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + // The generated scripts require PowerShell v5.0+ (which comes Windows 10, but // can be downloaded separately for windows 7 or 8.1). @@ -12,89 +23,288 @@ import ( "io" "os" "strings" - - "github.com/spf13/pflag" ) -var powerShellCompletionTemplate = `using namespace System.Management.Automation -using namespace System.Management.Automation.Language -Register-ArgumentCompleter -Native -CommandName '%s' -ScriptBlock { - param($wordToComplete, $commandAst, $cursorPosition) - $commandElements = $commandAst.CommandElements - $command = @( - '%s' - for ($i = 1; $i -lt $commandElements.Count; $i++) { - $element = $commandElements[$i] - if ($element -isnot [StringConstantExpressionAst] -or - $element.StringConstantType -ne [StringConstantType]::BareWord -or - $element.Value.StartsWith('-')) { - break - } - $element.Value - } - ) -join ';' - $completions = @(switch ($command) {%s - }) - $completions.Where{ $_.CompletionText -like "$wordToComplete*" } | - Sort-Object -Property ListItemText -}` - -func generatePowerShellSubcommandCases(out io.Writer, cmd *Command, previousCommandName string) { - var cmdName string - if previousCommandName == "" { - cmdName = cmd.Name() - } else { - cmdName = fmt.Sprintf("%s;%s", previousCommandName, cmd.Name()) - } +func genPowerShellComp(buf io.StringWriter, name string, includeDesc bool) { + // Variables should not contain a '-' or ':' character + nameForVar := name + nameForVar = strings.Replace(nameForVar, "-", "_", -1) + nameForVar = strings.Replace(nameForVar, ":", "_", -1) - fmt.Fprintf(out, "\n '%s' {", cmdName) - - cmd.Flags().VisitAll(func(flag *pflag.Flag) { - if nonCompletableFlag(flag) { - return - } - usage := escapeStringForPowerShell(flag.Usage) - if len(flag.Shorthand) > 0 { - fmt.Fprintf(out, "\n [CompletionResult]::new('-%s', '%s', [CompletionResultType]::ParameterName, '%s')", flag.Shorthand, flag.Shorthand, usage) - } - fmt.Fprintf(out, "\n [CompletionResult]::new('--%s', '%s', [CompletionResultType]::ParameterName, '%s')", flag.Name, flag.Name, usage) - }) - - for _, subCmd := range cmd.Commands() { - usage := escapeStringForPowerShell(subCmd.Short) - fmt.Fprintf(out, "\n [CompletionResult]::new('%s', '%s', [CompletionResultType]::ParameterValue, '%s')", subCmd.Name(), subCmd.Name(), usage) + compCmd := ShellCompRequestCmd + if !includeDesc { + compCmd = ShellCompNoDescRequestCmd } + WriteStringAndCheck(buf, fmt.Sprintf(`# powershell completion for %-36[1]s -*- shell-script -*- - fmt.Fprint(out, "\n break\n }") - - for _, subCmd := range cmd.Commands() { - generatePowerShellSubcommandCases(out, subCmd, cmdName) - } +function __%[1]s_debug { + if ($env:BASH_COMP_DEBUG_FILE) { + "$args" | Out-File -Append -FilePath "$env:BASH_COMP_DEBUG_FILE" + } } -func escapeStringForPowerShell(s string) string { - return strings.Replace(s, "'", "''", -1) +filter __%[1]s_escapeStringWithSpecialChars { +`+" $_ -replace '\\s|#|@|\\$|;|,|''|\\{|\\}|\\(|\\)|\"|`|\\||<|>|&','`$&'"+` } -// GenPowerShellCompletion generates PowerShell completion file and writes to the passed writer. -func (c *Command) GenPowerShellCompletion(w io.Writer) error { - buf := new(bytes.Buffer) +[scriptblock]$__%[2]sCompleterBlock = { + param( + $WordToComplete, + $CommandAst, + $CursorPosition + ) + + # Get the current command line and convert into a string + $Command = $CommandAst.CommandElements + $Command = "$Command" + + __%[1]s_debug "" + __%[1]s_debug "========= starting completion logic ==========" + __%[1]s_debug "WordToComplete: $WordToComplete Command: $Command CursorPosition: $CursorPosition" + + # The user could have moved the cursor backwards on the command-line. + # We need to trigger completion from the $CursorPosition location, so we need + # to truncate the command-line ($Command) up to the $CursorPosition location. + # Make sure the $Command is longer then the $CursorPosition before we truncate. + # This happens because the $Command does not include the last space. + if ($Command.Length -gt $CursorPosition) { + $Command=$Command.Substring(0,$CursorPosition) + } + __%[1]s_debug "Truncated command: $Command" + + $ShellCompDirectiveError=%[4]d + $ShellCompDirectiveNoSpace=%[5]d + $ShellCompDirectiveNoFileComp=%[6]d + $ShellCompDirectiveFilterFileExt=%[7]d + $ShellCompDirectiveFilterDirs=%[8]d + + # Prepare the command to request completions for the program. + # Split the command at the first space to separate the program and arguments. + $Program,$Arguments = $Command.Split(" ",2) + + $RequestComp="$Program %[3]s $Arguments" + __%[1]s_debug "RequestComp: $RequestComp" + + # we cannot use $WordToComplete because it + # has the wrong values if the cursor was moved + # so use the last argument + if ($WordToComplete -ne "" ) { + $WordToComplete = $Arguments.Split(" ")[-1] + } + __%[1]s_debug "New WordToComplete: $WordToComplete" + - var subCommandCases bytes.Buffer - generatePowerShellSubcommandCases(&subCommandCases, c, "") - fmt.Fprintf(buf, powerShellCompletionTemplate, c.Name(), c.Name(), subCommandCases.String()) + # Check for flag with equal sign + $IsEqualFlag = ($WordToComplete -Like "--*=*" ) + if ( $IsEqualFlag ) { + __%[1]s_debug "Completing equal sign flag" + # Remove the flag part + $Flag,$WordToComplete = $WordToComplete.Split("=",2) + } + + if ( $WordToComplete -eq "" -And ( -Not $IsEqualFlag )) { + # If the last parameter is complete (there is a space following it) + # We add an extra empty parameter so we can indicate this to the go method. + __%[1]s_debug "Adding extra empty parameter" +`+" # We need to use `\"`\" to pass an empty argument a \"\" or '' does not work!!!"+` +`+" $RequestComp=\"$RequestComp\" + ' `\"`\"'"+` + } + + __%[1]s_debug "Calling $RequestComp" + # First disable ActiveHelp which is not supported for Powershell + $env:%[9]s=0 + + #call the command store the output in $out and redirect stderr and stdout to null + # $Out is an array contains each line per element + Invoke-Expression -OutVariable out "$RequestComp" 2>&1 | Out-Null + + # get directive from last line + [int]$Directive = $Out[-1].TrimStart(':') + if ($Directive -eq "") { + # There is no directive specified + $Directive = 0 + } + __%[1]s_debug "The completion directive is: $Directive" + + # remove directive (last element) from out + $Out = $Out | Where-Object { $_ -ne $Out[-1] } + __%[1]s_debug "The completions are: $Out" + + if (($Directive -band $ShellCompDirectiveError) -ne 0 ) { + # Error code. No completion. + __%[1]s_debug "Received error from custom completion go code" + return + } + + $Longest = 0 + $Values = $Out | ForEach-Object { + #Split the output in name and description +`+" $Name, $Description = $_.Split(\"`t\",2)"+` + __%[1]s_debug "Name: $Name Description: $Description" + + # Look for the longest completion so that we can format things nicely + if ($Longest -lt $Name.Length) { + $Longest = $Name.Length + } + + # Set the description to a one space string if there is none set. + # This is needed because the CompletionResult does not accept an empty string as argument + if (-Not $Description) { + $Description = " " + } + @{Name="$Name";Description="$Description"} + } + + + $Space = " " + if (($Directive -band $ShellCompDirectiveNoSpace) -ne 0 ) { + # remove the space here + __%[1]s_debug "ShellCompDirectiveNoSpace is called" + $Space = "" + } + + if ((($Directive -band $ShellCompDirectiveFilterFileExt) -ne 0 ) -or + (($Directive -band $ShellCompDirectiveFilterDirs) -ne 0 )) { + __%[1]s_debug "ShellCompDirectiveFilterFileExt ShellCompDirectiveFilterDirs are not supported" + + # return here to prevent the completion of the extensions + return + } + + $Values = $Values | Where-Object { + # filter the result + $_.Name -like "$WordToComplete*" + + # Join the flag back if we have an equal sign flag + if ( $IsEqualFlag ) { + __%[1]s_debug "Join the equal sign flag back to the completion value" + $_.Name = $Flag + "=" + $_.Name + } + } + if (($Directive -band $ShellCompDirectiveNoFileComp) -ne 0 ) { + __%[1]s_debug "ShellCompDirectiveNoFileComp is called" + + if ($Values.Length -eq 0) { + # Just print an empty string here so the + # shell does not start to complete paths. + # We cannot use CompletionResult here because + # it does not accept an empty string as argument. + "" + return + } + } + + # Get the current mode + $Mode = (Get-PSReadLineKeyHandler | Where-Object {$_.Key -eq "Tab" }).Function + __%[1]s_debug "Mode: $Mode" + + $Values | ForEach-Object { + + # store temporary because switch will overwrite $_ + $comp = $_ + + # PowerShell supports three different completion modes + # - TabCompleteNext (default windows style - on each key press the next option is displayed) + # - Complete (works like bash) + # - MenuComplete (works like zsh) + # You set the mode with Set-PSReadLineKeyHandler -Key Tab -Function + + # CompletionResult Arguments: + # 1) CompletionText text to be used as the auto completion result + # 2) ListItemText text to be displayed in the suggestion list + # 3) ResultType type of completion result + # 4) ToolTip text for the tooltip with details about the object + + switch ($Mode) { + + # bash like + "Complete" { + + if ($Values.Length -eq 1) { + __%[1]s_debug "Only one completion left" + + # insert space after value + [System.Management.Automation.CompletionResult]::new($($comp.Name | __%[1]s_escapeStringWithSpecialChars) + $Space, "$($comp.Name)", 'ParameterValue', "$($comp.Description)") + + } else { + # Add the proper number of spaces to align the descriptions + while($comp.Name.Length -lt $Longest) { + $comp.Name = $comp.Name + " " + } + + # Check for empty description and only add parentheses if needed + if ($($comp.Description) -eq " " ) { + $Description = "" + } else { + $Description = " ($($comp.Description))" + } + + [System.Management.Automation.CompletionResult]::new("$($comp.Name)$Description", "$($comp.Name)$Description", 'ParameterValue', "$($comp.Description)") + } + } + + # zsh like + "MenuComplete" { + # insert space after value + # MenuComplete will automatically show the ToolTip of + # the highlighted value at the bottom of the suggestions. + [System.Management.Automation.CompletionResult]::new($($comp.Name | __%[1]s_escapeStringWithSpecialChars) + $Space, "$($comp.Name)", 'ParameterValue', "$($comp.Description)") + } + + # TabCompleteNext and in case we get something unknown + Default { + # Like MenuComplete but we don't want to add a space here because + # the user need to press space anyway to get the completion. + # Description will not be shown because that's not possible with TabCompleteNext + [System.Management.Automation.CompletionResult]::new($($comp.Name | __%[1]s_escapeStringWithSpecialChars), "$($comp.Name)", 'ParameterValue', "$($comp.Description)") + } + } + + } +} + +Register-ArgumentCompleter -CommandName '%[1]s' -ScriptBlock $__%[2]sCompleterBlock +`, name, nameForVar, compCmd, + ShellCompDirectiveError, ShellCompDirectiveNoSpace, ShellCompDirectiveNoFileComp, + ShellCompDirectiveFilterFileExt, ShellCompDirectiveFilterDirs, activeHelpEnvVar(name))) +} + +func (c *Command) genPowerShellCompletion(w io.Writer, includeDesc bool) error { + buf := new(bytes.Buffer) + genPowerShellComp(buf, c.Name(), includeDesc) _, err := buf.WriteTo(w) return err } -// GenPowerShellCompletionFile generates PowerShell completion file. -func (c *Command) GenPowerShellCompletionFile(filename string) error { +func (c *Command) genPowerShellCompletionFile(filename string, includeDesc bool) error { outFile, err := os.Create(filename) if err != nil { return err } defer outFile.Close() - return c.GenPowerShellCompletion(outFile) + return c.genPowerShellCompletion(outFile, includeDesc) +} + +// GenPowerShellCompletionFile generates powershell completion file without descriptions. +func (c *Command) GenPowerShellCompletionFile(filename string) error { + return c.genPowerShellCompletionFile(filename, false) +} + +// GenPowerShellCompletion generates powershell completion file without descriptions +// and writes it to the passed writer. +func (c *Command) GenPowerShellCompletion(w io.Writer) error { + return c.genPowerShellCompletion(w, false) +} + +// GenPowerShellCompletionFileWithDesc generates powershell completion file with descriptions. +func (c *Command) GenPowerShellCompletionFileWithDesc(filename string) error { + return c.genPowerShellCompletionFile(filename, true) +} + +// GenPowerShellCompletionWithDesc generates powershell completion file with descriptions +// and writes it to the passed writer. +func (c *Command) GenPowerShellCompletionWithDesc(w io.Writer) error { + return c.genPowerShellCompletion(w, true) } diff --git a/vendor/github.com/spf13/cobra/powershell_completions.md b/vendor/github.com/spf13/cobra/powershell_completions.md index afed80240..c449f1e5c 100644 --- a/vendor/github.com/spf13/cobra/powershell_completions.md +++ b/vendor/github.com/spf13/cobra/powershell_completions.md @@ -1,14 +1,3 @@ # Generating PowerShell Completions For Your Own cobra.Command -Cobra can generate PowerShell completion scripts. Users need PowerShell version 5.0 or above, which comes with Windows 10 and can be downloaded separately for Windows 7 or 8.1. They can then write the completions to a file and source this file from their PowerShell profile, which is referenced by the `$Profile` environment variable. See `Get-Help about_Profiles` for more info about PowerShell profiles. - -# What's supported - -- Completion for subcommands using their `.Short` description -- Completion for non-hidden flags using their `.Name` and `.Shorthand` - -# What's not yet supported - -- Command aliases -- Required, filename or custom flags (they will work like normal flags) -- Custom completion scripts +Please refer to [Shell Completions](shell_completions.md#powershell-completions) for details. diff --git a/vendor/github.com/spf13/cobra/projects_using_cobra.md b/vendor/github.com/spf13/cobra/projects_using_cobra.md new file mode 100644 index 000000000..6865f88e7 --- /dev/null +++ b/vendor/github.com/spf13/cobra/projects_using_cobra.md @@ -0,0 +1,60 @@ +## Projects using Cobra + +- [Allero](https://github.com/allero-io/allero) +- [Arduino CLI](https://github.com/arduino/arduino-cli) +- [Bleve](https://blevesearch.com/) +- [Cilium](https://cilium.io/) +- [CloudQuery](https://github.com/cloudquery/cloudquery) +- [CockroachDB](https://www.cockroachlabs.com/) +- [Cosmos SDK](https://github.com/cosmos/cosmos-sdk) +- [Datree](https://github.com/datreeio/datree) +- [Delve](https://github.com/derekparker/delve) +- [Docker (distribution)](https://github.com/docker/distribution) +- [Etcd](https://etcd.io/) +- [Gardener](https://github.com/gardener/gardenctl) +- [Giant Swarm's gsctl](https://github.com/giantswarm/gsctl) +- [Git Bump](https://github.com/erdaltsksn/git-bump) +- [GitHub CLI](https://github.com/cli/cli) +- [GitHub Labeler](https://github.com/erdaltsksn/gh-label) +- [Golangci-lint](https://golangci-lint.run) +- [GopherJS](https://github.com/gopherjs/gopherjs) +- [GoReleaser](https://goreleaser.com) +- [Helm](https://helm.sh) +- [Hugo](https://gohugo.io) +- [Infracost](https://github.com/infracost/infracost) +- [Istio](https://istio.io) +- [Kool](https://github.com/kool-dev/kool) +- [Kubernetes](https://kubernetes.io/) +- [Kubescape](https://github.com/armosec/kubescape) +- [KubeVirt](https://github.com/kubevirt/kubevirt) +- [Linkerd](https://linkerd.io/) +- [Mattermost-server](https://github.com/mattermost/mattermost-server) +- [Mercure](https://mercure.rocks/) +- [Meroxa CLI](https://github.com/meroxa/cli) +- [Metal Stack CLI](https://github.com/metal-stack/metalctl) +- [Moby (former Docker)](https://github.com/moby/moby) +- [Moldy](https://github.com/Moldy-Community/moldy) +- [Multi-gitter](https://github.com/lindell/multi-gitter) +- [Nanobox](https://github.com/nanobox-io/nanobox)/[Nanopack](https://github.com/nanopack) +- [nFPM](https://nfpm.goreleaser.com) +- [Okteto](https://github.com/okteto/okteto) +- [OpenShift](https://www.openshift.com/) +- [Ory Hydra](https://github.com/ory/hydra) +- [Ory Kratos](https://github.com/ory/kratos) +- [Pixie](https://github.com/pixie-io/pixie) +- [Polygon Edge](https://github.com/0xPolygon/polygon-edge) +- [Pouch](https://github.com/alibaba/pouch) +- [ProjectAtomic (enterprise)](https://www.projectatomic.io/) +- [Prototool](https://github.com/uber/prototool) +- [Pulumi](https://www.pulumi.com) +- [QRcp](https://github.com/claudiodangelis/qrcp) +- [Random](https://github.com/erdaltsksn/random) +- [Rclone](https://rclone.org/) +- [Scaleway CLI](https://github.com/scaleway/scaleway-cli) +- [Skaffold](https://skaffold.dev/) +- [Tendermint](https://github.com/tendermint/tendermint) +- [Twitch CLI](https://github.com/twitchdev/twitch-cli) +- [UpCloud CLI (`upctl`)](https://github.com/UpCloudLtd/upcloud-cli) +- VMware's [Tanzu Community Edition](https://github.com/vmware-tanzu/community-edition) & [Tanzu Framework](https://github.com/vmware-tanzu/tanzu-framework) +- [Werf](https://werf.io/) +- [ZITADEL](https://github.com/zitadel/zitadel) diff --git a/vendor/github.com/spf13/cobra/shell_completions.go b/vendor/github.com/spf13/cobra/shell_completions.go index ba0af9cb5..126e83c30 100644 --- a/vendor/github.com/spf13/cobra/shell_completions.go +++ b/vendor/github.com/spf13/cobra/shell_completions.go @@ -1,85 +1,98 @@ +// Copyright 2013-2022 The Cobra Authors +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + package cobra import ( "github.com/spf13/pflag" ) -// MarkFlagRequired adds the BashCompOneRequiredFlag annotation to the named flag if it exists, +// MarkFlagRequired instructs the various shell completion implementations to +// prioritize the named flag when performing completion, // and causes your command to report an error if invoked without the flag. func (c *Command) MarkFlagRequired(name string) error { return MarkFlagRequired(c.Flags(), name) } -// MarkPersistentFlagRequired adds the BashCompOneRequiredFlag annotation to the named persistent flag if it exists, +// MarkPersistentFlagRequired instructs the various shell completion implementations to +// prioritize the named persistent flag when performing completion, // and causes your command to report an error if invoked without the flag. func (c *Command) MarkPersistentFlagRequired(name string) error { return MarkFlagRequired(c.PersistentFlags(), name) } -// MarkFlagRequired adds the BashCompOneRequiredFlag annotation to the named flag if it exists, +// MarkFlagRequired instructs the various shell completion implementations to +// prioritize the named flag when performing completion, // and causes your command to report an error if invoked without the flag. func MarkFlagRequired(flags *pflag.FlagSet, name string) error { return flags.SetAnnotation(name, BashCompOneRequiredFlag, []string{"true"}) } -// MarkFlagFilename adds the BashCompFilenameExt annotation to the named flag, if it exists. -// Generated bash autocompletion will select filenames for the flag, limiting to named extensions if provided. +// MarkFlagFilename instructs the various shell completion implementations to +// limit completions for the named flag to the specified file extensions. func (c *Command) MarkFlagFilename(name string, extensions ...string) error { return MarkFlagFilename(c.Flags(), name, extensions...) } // MarkFlagCustom adds the BashCompCustom annotation to the named flag, if it exists. -// Generated bash autocompletion will call the bash function f for the flag. +// The bash completion script will call the bash function f for the flag. +// +// This will only work for bash completion. +// It is recommended to instead use c.RegisterFlagCompletionFunc(...) which allows +// to register a Go function which will work across all shells. func (c *Command) MarkFlagCustom(name string, f string) error { return MarkFlagCustom(c.Flags(), name, f) } // MarkPersistentFlagFilename instructs the various shell completion -// implementations to limit completions for this persistent flag to the -// specified extensions (patterns). -// -// Shell Completion compatibility matrix: bash, zsh +// implementations to limit completions for the named persistent flag to the +// specified file extensions. func (c *Command) MarkPersistentFlagFilename(name string, extensions ...string) error { return MarkFlagFilename(c.PersistentFlags(), name, extensions...) } // MarkFlagFilename instructs the various shell completion implementations to -// limit completions for this flag to the specified extensions (patterns). -// -// Shell Completion compatibility matrix: bash, zsh +// limit completions for the named flag to the specified file extensions. func MarkFlagFilename(flags *pflag.FlagSet, name string, extensions ...string) error { return flags.SetAnnotation(name, BashCompFilenameExt, extensions) } -// MarkFlagCustom instructs the various shell completion implementations to -// limit completions for this flag to the specified extensions (patterns). +// MarkFlagCustom adds the BashCompCustom annotation to the named flag, if it exists. +// The bash completion script will call the bash function f for the flag. // -// Shell Completion compatibility matrix: bash, zsh +// This will only work for bash completion. +// It is recommended to instead use c.RegisterFlagCompletionFunc(...) which allows +// to register a Go function which will work across all shells. func MarkFlagCustom(flags *pflag.FlagSet, name string, f string) error { return flags.SetAnnotation(name, BashCompCustom, []string{f}) } // MarkFlagDirname instructs the various shell completion implementations to -// complete only directories with this named flag. -// -// Shell Completion compatibility matrix: zsh +// limit completions for the named flag to directory names. func (c *Command) MarkFlagDirname(name string) error { return MarkFlagDirname(c.Flags(), name) } // MarkPersistentFlagDirname instructs the various shell completion -// implementations to complete only directories with this persistent named flag. -// -// Shell Completion compatibility matrix: zsh +// implementations to limit completions for the named persistent flag to +// directory names. func (c *Command) MarkPersistentFlagDirname(name string) error { return MarkFlagDirname(c.PersistentFlags(), name) } // MarkFlagDirname instructs the various shell completion implementations to -// complete only directories with this specified flag. -// -// Shell Completion compatibility matrix: zsh +// limit completions for the named flag to directory names. func MarkFlagDirname(flags *pflag.FlagSet, name string) error { - zshPattern := "-(/)" - return flags.SetAnnotation(name, zshCompDirname, []string{zshPattern}) + return flags.SetAnnotation(name, BashCompSubdirsInDir, []string{}) } diff --git a/vendor/github.com/spf13/cobra/shell_completions.md b/vendor/github.com/spf13/cobra/shell_completions.md new file mode 100644 index 000000000..553ee5df8 --- /dev/null +++ b/vendor/github.com/spf13/cobra/shell_completions.md @@ -0,0 +1,568 @@ +# Generating shell completions + +Cobra can generate shell completions for multiple shells. +The currently supported shells are: +- Bash +- Zsh +- fish +- PowerShell + +Cobra will automatically provide your program with a fully functional `completion` command, +similarly to how it provides the `help` command. + +## Creating your own completion command + +If you do not wish to use the default `completion` command, you can choose to +provide your own, which will take precedence over the default one. (This also provides +backwards-compatibility with programs that already have their own `completion` command.) + +If you are using the `cobra-cli` generator, +which can be found at [spf13/cobra-cli](https://github.com/spf13/cobra-cli), +you can create a completion command by running + +```bash +cobra-cli add completion +``` +and then modifying the generated `cmd/completion.go` file to look something like this +(writing the shell script to stdout allows the most flexible use): + +```go +var completionCmd = &cobra.Command{ + Use: "completion [bash|zsh|fish|powershell]", + Short: "Generate completion script", + Long: fmt.Sprintf(`To load completions: + +Bash: + + $ source <(%[1]s completion bash) + + # To load completions for each session, execute once: + # Linux: + $ %[1]s completion bash > /etc/bash_completion.d/%[1]s + # macOS: + $ %[1]s completion bash > $(brew --prefix)/etc/bash_completion.d/%[1]s + +Zsh: + + # If shell completion is not already enabled in your environment, + # you will need to enable it. You can execute the following once: + + $ echo "autoload -U compinit; compinit" >> ~/.zshrc + + # To load completions for each session, execute once: + $ %[1]s completion zsh > "${fpath[1]}/_%[1]s" + + # You will need to start a new shell for this setup to take effect. + +fish: + + $ %[1]s completion fish | source + + # To load completions for each session, execute once: + $ %[1]s completion fish > ~/.config/fish/completions/%[1]s.fish + +PowerShell: + + PS> %[1]s completion powershell | Out-String | Invoke-Expression + + # To load completions for every new session, run: + PS> %[1]s completion powershell > %[1]s.ps1 + # and source this file from your PowerShell profile. +`,cmd.Root().Name()), + DisableFlagsInUseLine: true, + ValidArgs: []string{"bash", "zsh", "fish", "powershell"}, + Args: cobra.ExactValidArgs(1), + Run: func(cmd *cobra.Command, args []string) { + switch args[0] { + case "bash": + cmd.Root().GenBashCompletion(os.Stdout) + case "zsh": + cmd.Root().GenZshCompletion(os.Stdout) + case "fish": + cmd.Root().GenFishCompletion(os.Stdout, true) + case "powershell": + cmd.Root().GenPowerShellCompletionWithDesc(os.Stdout) + } + }, +} +``` + +**Note:** The cobra generator may include messages printed to stdout, for example, if the config file is loaded; this will break the auto-completion script so must be removed. + +## Adapting the default completion command + +Cobra provides a few options for the default `completion` command. To configure such options you must set +the `CompletionOptions` field on the *root* command. + +To tell Cobra *not* to provide the default `completion` command: +``` +rootCmd.CompletionOptions.DisableDefaultCmd = true +``` + +To tell Cobra to mark the default `completion` command as *hidden*: +``` +rootCmd.CompletionOptions.HiddenDefaultCmd = true +``` + +To tell Cobra *not* to provide the user with the `--no-descriptions` flag to the completion sub-commands: +``` +rootCmd.CompletionOptions.DisableNoDescFlag = true +``` + +To tell Cobra to completely disable descriptions for completions: +``` +rootCmd.CompletionOptions.DisableDescriptions = true +``` + +# Customizing completions + +The generated completion scripts will automatically handle completing commands and flags. However, you can make your completions much more powerful by providing information to complete your program's nouns and flag values. + +## Completion of nouns + +### Static completion of nouns + +Cobra allows you to provide a pre-defined list of completion choices for your nouns using the `ValidArgs` field. +For example, if you want `kubectl get [tab][tab]` to show a list of valid "nouns" you have to set them. +Some simplified code from `kubectl get` looks like: + +```go +validArgs = []string{ "pod", "node", "service", "replicationcontroller" } + +cmd := &cobra.Command{ + Use: "get [(-o|--output=)json|yaml|template|...] (RESOURCE [NAME] | RESOURCE/NAME ...)", + Short: "Display one or many resources", + Long: get_long, + Example: get_example, + Run: func(cmd *cobra.Command, args []string) { + cobra.CheckErr(RunGet(f, out, cmd, args)) + }, + ValidArgs: validArgs, +} +``` + +Notice we put the `ValidArgs` field on the `get` sub-command. Doing so will give results like: + +```bash +$ kubectl get [tab][tab] +node pod replicationcontroller service +``` + +#### Aliases for nouns + +If your nouns have aliases, you can define them alongside `ValidArgs` using `ArgAliases`: + +```go +argAliases = []string { "pods", "nodes", "services", "svc", "replicationcontrollers", "rc" } + +cmd := &cobra.Command{ + ... + ValidArgs: validArgs, + ArgAliases: argAliases +} +``` + +The aliases are not shown to the user on tab completion, but they are accepted as valid nouns by +the completion algorithm if entered manually, e.g. in: + +```bash +$ kubectl get rc [tab][tab] +backend frontend database +``` + +Note that without declaring `rc` as an alias, the completion algorithm would not know to show the list of +replication controllers following `rc`. + +### Dynamic completion of nouns + +In some cases it is not possible to provide a list of completions in advance. Instead, the list of completions must be determined at execution-time. In a similar fashion as for static completions, you can use the `ValidArgsFunction` field to provide a Go function that Cobra will execute when it needs the list of completion choices for the nouns of a command. Note that either `ValidArgs` or `ValidArgsFunction` can be used for a single cobra command, but not both. +Simplified code from `helm status` looks like: + +```go +cmd := &cobra.Command{ + Use: "status RELEASE_NAME", + Short: "Display the status of the named release", + Long: status_long, + RunE: func(cmd *cobra.Command, args []string) { + RunGet(args[0]) + }, + ValidArgsFunction: func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) { + if len(args) != 0 { + return nil, cobra.ShellCompDirectiveNoFileComp + } + return getReleasesFromCluster(toComplete), cobra.ShellCompDirectiveNoFileComp + }, +} +``` +Where `getReleasesFromCluster()` is a Go function that obtains the list of current Helm releases running on the Kubernetes cluster. +Notice we put the `ValidArgsFunction` on the `status` sub-command. Let's assume the Helm releases on the cluster are: `harbor`, `notary`, `rook` and `thanos` then this dynamic completion will give results like: + +```bash +$ helm status [tab][tab] +harbor notary rook thanos +``` +You may have noticed the use of `cobra.ShellCompDirective`. These directives are bit fields allowing to control some shell completion behaviors for your particular completion. You can combine them with the bit-or operator such as `cobra.ShellCompDirectiveNoSpace | cobra.ShellCompDirectiveNoFileComp` +```go +// Indicates that the shell will perform its default behavior after completions +// have been provided (this implies none of the other directives). +ShellCompDirectiveDefault + +// Indicates an error occurred and completions should be ignored. +ShellCompDirectiveError + +// Indicates that the shell should not add a space after the completion, +// even if there is a single completion provided. +ShellCompDirectiveNoSpace + +// Indicates that the shell should not provide file completion even when +// no completion is provided. +ShellCompDirectiveNoFileComp + +// Indicates that the returned completions should be used as file extension filters. +// For example, to complete only files of the form *.json or *.yaml: +// return []string{"yaml", "json"}, ShellCompDirectiveFilterFileExt +// For flags, using MarkFlagFilename() and MarkPersistentFlagFilename() +// is a shortcut to using this directive explicitly. +// +ShellCompDirectiveFilterFileExt + +// Indicates that only directory names should be provided in file completion. +// For example: +// return nil, ShellCompDirectiveFilterDirs +// For flags, using MarkFlagDirname() is a shortcut to using this directive explicitly. +// +// To request directory names within another directory, the returned completions +// should specify a single directory name within which to search. For example, +// to complete directories within "themes/": +// return []string{"themes"}, ShellCompDirectiveFilterDirs +// +ShellCompDirectiveFilterDirs +``` + +***Note***: When using the `ValidArgsFunction`, Cobra will call your registered function after having parsed all flags and arguments provided in the command-line. You therefore don't need to do this parsing yourself. For example, when a user calls `helm status --namespace my-rook-ns [tab][tab]`, Cobra will call your registered `ValidArgsFunction` after having parsed the `--namespace` flag, as it would have done when calling the `RunE` function. + +#### Debugging + +Cobra achieves dynamic completion through the use of a hidden command called by the completion script. To debug your Go completion code, you can call this hidden command directly: +```bash +$ helm __complete status har +harbor +:4 +Completion ended with directive: ShellCompDirectiveNoFileComp # This is on stderr +``` +***Important:*** If the noun to complete is empty (when the user has not yet typed any letters of that noun), you must pass an empty parameter to the `__complete` command: +```bash +$ helm __complete status "" +harbor +notary +rook +thanos +:4 +Completion ended with directive: ShellCompDirectiveNoFileComp # This is on stderr +``` +Calling the `__complete` command directly allows you to run the Go debugger to troubleshoot your code. You can also add printouts to your code; Cobra provides the following functions to use for printouts in Go completion code: +```go +// Prints to the completion script debug file (if BASH_COMP_DEBUG_FILE +// is set to a file path) and optionally prints to stderr. +cobra.CompDebug(msg string, printToStdErr bool) { +cobra.CompDebugln(msg string, printToStdErr bool) + +// Prints to the completion script debug file (if BASH_COMP_DEBUG_FILE +// is set to a file path) and to stderr. +cobra.CompError(msg string) +cobra.CompErrorln(msg string) +``` +***Important:*** You should **not** leave traces that print directly to stdout in your completion code as they will be interpreted as completion choices by the completion script. Instead, use the cobra-provided debugging traces functions mentioned above. + +## Completions for flags + +### Mark flags as required + +Most of the time completions will only show sub-commands. But if a flag is required to make a sub-command work, you probably want it to show up when the user types [tab][tab]. You can mark a flag as 'Required' like so: + +```go +cmd.MarkFlagRequired("pod") +cmd.MarkFlagRequired("container") +``` + +and you'll get something like + +```bash +$ kubectl exec [tab][tab] +-c --container= -p --pod= +``` + +### Specify dynamic flag completion + +As for nouns, Cobra provides a way of defining dynamic completion of flags. To provide a Go function that Cobra will execute when it needs the list of completion choices for a flag, you must register the function using the `command.RegisterFlagCompletionFunc()` function. + +```go +flagName := "output" +cmd.RegisterFlagCompletionFunc(flagName, func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) { + return []string{"json", "table", "yaml"}, cobra.ShellCompDirectiveDefault +}) +``` +Notice that calling `RegisterFlagCompletionFunc()` is done through the `command` with which the flag is associated. In our example this dynamic completion will give results like so: + +```bash +$ helm status --output [tab][tab] +json table yaml +``` + +#### Debugging + +You can also easily debug your Go completion code for flags: +```bash +$ helm __complete status --output "" +json +table +yaml +:4 +Completion ended with directive: ShellCompDirectiveNoFileComp # This is on stderr +``` +***Important:*** You should **not** leave traces that print to stdout in your completion code as they will be interpreted as completion choices by the completion script. Instead, use the cobra-provided debugging traces functions mentioned further above. + +### Specify valid filename extensions for flags that take a filename + +To limit completions of flag values to file names with certain extensions you can either use the different `MarkFlagFilename()` functions or a combination of `RegisterFlagCompletionFunc()` and `ShellCompDirectiveFilterFileExt`, like so: +```go +flagName := "output" +cmd.MarkFlagFilename(flagName, "yaml", "json") +``` +or +```go +flagName := "output" +cmd.RegisterFlagCompletionFunc(flagName, func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) { + return []string{"yaml", "json"}, ShellCompDirectiveFilterFileExt}) +``` + +### Limit flag completions to directory names + +To limit completions of flag values to directory names you can either use the `MarkFlagDirname()` functions or a combination of `RegisterFlagCompletionFunc()` and `ShellCompDirectiveFilterDirs`, like so: +```go +flagName := "output" +cmd.MarkFlagDirname(flagName) +``` +or +```go +flagName := "output" +cmd.RegisterFlagCompletionFunc(flagName, func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) { + return nil, cobra.ShellCompDirectiveFilterDirs +}) +``` +To limit completions of flag values to directory names *within another directory* you can use a combination of `RegisterFlagCompletionFunc()` and `ShellCompDirectiveFilterDirs` like so: +```go +flagName := "output" +cmd.RegisterFlagCompletionFunc(flagName, func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) { + return []string{"themes"}, cobra.ShellCompDirectiveFilterDirs +}) +``` +### Descriptions for completions + +Cobra provides support for completion descriptions. Such descriptions are supported for each shell +(however, for bash, it is only available in the [completion V2 version](#bash-completion-v2)). +For commands and flags, Cobra will provide the descriptions automatically, based on usage information. +For example, using zsh: +``` +$ helm s[tab] +search -- search for a keyword in charts +show -- show information of a chart +status -- displays the status of the named release +``` +while using fish: +``` +$ helm s[tab] +search (search for a keyword in charts) show (show information of a chart) status (displays the status of the named release) +``` + +Cobra allows you to add descriptions to your own completions. Simply add the description text after each completion, following a `\t` separator. This technique applies to completions returned by `ValidArgs`, `ValidArgsFunction` and `RegisterFlagCompletionFunc()`. For example: +```go +ValidArgsFunction: func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) { + return []string{"harbor\tAn image registry", "thanos\tLong-term metrics"}, cobra.ShellCompDirectiveNoFileComp +}} +``` +or +```go +ValidArgs: []string{"bash\tCompletions for bash", "zsh\tCompletions for zsh"} +``` +## Bash completions + +### Dependencies + +The bash completion script generated by Cobra requires the `bash_completion` package. You should update the help text of your completion command to show how to install the `bash_completion` package ([Kubectl docs](https://kubernetes.io/docs/tasks/tools/install-kubectl/#enabling-shell-autocompletion)) + +### Aliases + +You can also configure `bash` aliases for your program and they will also support completions. + +```bash +alias aliasname=origcommand +complete -o default -F __start_origcommand aliasname + +# and now when you run `aliasname` completion will make +# suggestions as it did for `origcommand`. + +$ aliasname +completion firstcommand secondcommand +``` +### Bash legacy dynamic completions + +For backward compatibility, Cobra still supports its bash legacy dynamic completion solution. +Please refer to [Bash Completions](bash_completions.md) for details. + +### Bash completion V2 + +Cobra provides two versions for bash completion. The original bash completion (which started it all!) can be used by calling +`GenBashCompletion()` or `GenBashCompletionFile()`. + +A new V2 bash completion version is also available. This version can be used by calling `GenBashCompletionV2()` or +`GenBashCompletionFileV2()`. The V2 version does **not** support the legacy dynamic completion +(see [Bash Completions](bash_completions.md)) but instead works only with the Go dynamic completion +solution described in this document. +Unless your program already uses the legacy dynamic completion solution, it is recommended that you use the bash +completion V2 solution which provides the following extra features: +- Supports completion descriptions (like the other shells) +- Small completion script of less than 300 lines (v1 generates scripts of thousands of lines; `kubectl` for example has a bash v1 completion script of over 13K lines) +- Streamlined user experience thanks to a completion behavior aligned with the other shells + +`Bash` completion V2 supports descriptions for completions. When calling `GenBashCompletionV2()` or `GenBashCompletionFileV2()` +you must provide these functions with a parameter indicating if the completions should be annotated with a description; Cobra +will provide the description automatically based on usage information. You can choose to make this option configurable by +your users. + +``` +# With descriptions +$ helm s[tab][tab] +search (search for a keyword in charts) status (display the status of the named release) +show (show information of a chart) + +# Without descriptions +$ helm s[tab][tab] +search show status +``` +**Note**: Cobra's default `completion` command uses bash completion V2. If for some reason you need to use bash completion V1, you will need to implement your own `completion` command. +## Zsh completions + +Cobra supports native zsh completion generated from the root `cobra.Command`. +The generated completion script should be put somewhere in your `$fpath` and be named +`_`. You will need to start a new shell for the completions to become available. + +Zsh supports descriptions for completions. Cobra will provide the description automatically, +based on usage information. Cobra provides a way to completely disable such descriptions by +using `GenZshCompletionNoDesc()` or `GenZshCompletionFileNoDesc()`. You can choose to make +this a configurable option to your users. +``` +# With descriptions +$ helm s[tab] +search -- search for a keyword in charts +show -- show information of a chart +status -- displays the status of the named release + +# Without descriptions +$ helm s[tab] +search show status +``` +*Note*: Because of backward-compatibility requirements, we were forced to have a different API to disable completion descriptions between `zsh` and `fish`. + +### Limitations + +* Custom completions implemented in Bash scripting (legacy) are not supported and will be ignored for `zsh` (including the use of the `BashCompCustom` flag annotation). + * You should instead use `ValidArgsFunction` and `RegisterFlagCompletionFunc()` which are portable to the different shells (`bash`, `zsh`, `fish`, `powershell`). +* The function `MarkFlagCustom()` is not supported and will be ignored for `zsh`. + * You should instead use `RegisterFlagCompletionFunc()`. + +### Zsh completions standardization + +Cobra 1.1 standardized its zsh completion support to align it with its other shell completions. Although the API was kept backward-compatible, some small changes in behavior were introduced. +Please refer to [Zsh Completions](zsh_completions.md) for details. + +## fish completions + +Cobra supports native fish completions generated from the root `cobra.Command`. You can use the `command.GenFishCompletion()` or `command.GenFishCompletionFile()` functions. You must provide these functions with a parameter indicating if the completions should be annotated with a description; Cobra will provide the description automatically based on usage information. You can choose to make this option configurable by your users. +``` +# With descriptions +$ helm s[tab] +search (search for a keyword in charts) show (show information of a chart) status (displays the status of the named release) + +# Without descriptions +$ helm s[tab] +search show status +``` +*Note*: Because of backward-compatibility requirements, we were forced to have a different API to disable completion descriptions between `zsh` and `fish`. + +### Limitations + +* Custom completions implemented in bash scripting (legacy) are not supported and will be ignored for `fish` (including the use of the `BashCompCustom` flag annotation). + * You should instead use `ValidArgsFunction` and `RegisterFlagCompletionFunc()` which are portable to the different shells (`bash`, `zsh`, `fish`, `powershell`). +* The function `MarkFlagCustom()` is not supported and will be ignored for `fish`. + * You should instead use `RegisterFlagCompletionFunc()`. +* The following flag completion annotations are not supported and will be ignored for `fish`: + * `BashCompFilenameExt` (filtering by file extension) + * `BashCompSubdirsInDir` (filtering by directory) +* The functions corresponding to the above annotations are consequently not supported and will be ignored for `fish`: + * `MarkFlagFilename()` and `MarkPersistentFlagFilename()` (filtering by file extension) + * `MarkFlagDirname()` and `MarkPersistentFlagDirname()` (filtering by directory) +* Similarly, the following completion directives are not supported and will be ignored for `fish`: + * `ShellCompDirectiveFilterFileExt` (filtering by file extension) + * `ShellCompDirectiveFilterDirs` (filtering by directory) + +## PowerShell completions + +Cobra supports native PowerShell completions generated from the root `cobra.Command`. You can use the `command.GenPowerShellCompletion()` or `command.GenPowerShellCompletionFile()` functions. To include descriptions use `command.GenPowerShellCompletionWithDesc()` and `command.GenPowerShellCompletionFileWithDesc()`. Cobra will provide the description automatically based on usage information. You can choose to make this option configurable by your users. + +The script is designed to support all three PowerShell completion modes: + +* TabCompleteNext (default windows style - on each key press the next option is displayed) +* Complete (works like bash) +* MenuComplete (works like zsh) + +You set the mode with `Set-PSReadLineKeyHandler -Key Tab -Function `. Descriptions are only displayed when using the `Complete` or `MenuComplete` mode. + +Users need PowerShell version 5.0 or above, which comes with Windows 10 and can be downloaded separately for Windows 7 or 8.1. They can then write the completions to a file and source this file from their PowerShell profile, which is referenced by the `$Profile` environment variable. See `Get-Help about_Profiles` for more info about PowerShell profiles. + +``` +# With descriptions and Mode 'Complete' +$ helm s[tab] +search (search for a keyword in charts) show (show information of a chart) status (displays the status of the named release) + +# With descriptions and Mode 'MenuComplete' The description of the current selected value will be displayed below the suggestions. +$ helm s[tab] +search show status + +search for a keyword in charts + +# Without descriptions +$ helm s[tab] +search show status +``` +### Aliases + +You can also configure `powershell` aliases for your program and they will also support completions. + +``` +$ sal aliasname origcommand +$ Register-ArgumentCompleter -CommandName 'aliasname' -ScriptBlock $__origcommandCompleterBlock + +# and now when you run `aliasname` completion will make +# suggestions as it did for `origcommand`. + +$ aliasname +completion firstcommand secondcommand +``` +The name of the completer block variable is of the form `$__CompleterBlock` where every `-` and `:` in the program name have been replaced with `_`, to respect powershell naming syntax. + +### Limitations + +* Custom completions implemented in bash scripting (legacy) are not supported and will be ignored for `powershell` (including the use of the `BashCompCustom` flag annotation). + * You should instead use `ValidArgsFunction` and `RegisterFlagCompletionFunc()` which are portable to the different shells (`bash`, `zsh`, `fish`, `powershell`). +* The function `MarkFlagCustom()` is not supported and will be ignored for `powershell`. + * You should instead use `RegisterFlagCompletionFunc()`. +* The following flag completion annotations are not supported and will be ignored for `powershell`: + * `BashCompFilenameExt` (filtering by file extension) + * `BashCompSubdirsInDir` (filtering by directory) +* The functions corresponding to the above annotations are consequently not supported and will be ignored for `powershell`: + * `MarkFlagFilename()` and `MarkPersistentFlagFilename()` (filtering by file extension) + * `MarkFlagDirname()` and `MarkPersistentFlagDirname()` (filtering by directory) +* Similarly, the following completion directives are not supported and will be ignored for `powershell`: + * `ShellCompDirectiveFilterFileExt` (filtering by file extension) + * `ShellCompDirectiveFilterDirs` (filtering by directory) diff --git a/vendor/github.com/spf13/cobra/user_guide.md b/vendor/github.com/spf13/cobra/user_guide.md new file mode 100644 index 000000000..e55367e85 --- /dev/null +++ b/vendor/github.com/spf13/cobra/user_guide.md @@ -0,0 +1,695 @@ +# User Guide + +While you are welcome to provide your own organization, typically a Cobra-based +application will follow the following organizational structure: + +``` + ▾ appName/ + ▾ cmd/ + add.go + your.go + commands.go + here.go + main.go +``` + +In a Cobra app, typically the main.go file is very bare. It serves one purpose: initializing Cobra. + +```go +package main + +import ( + "{pathToYourApp}/cmd" +) + +func main() { + cmd.Execute() +} +``` + +## Using the Cobra Generator + +Cobra-CLI is its own program that will create your application and add any +commands you want. It's the easiest way to incorporate Cobra into your application. + +For complete details on using the Cobra generator, please refer to [The Cobra-CLI Generator README](https://github.com/spf13/cobra-cli/blob/main/README.md) + +## Using the Cobra Library + +To manually implement Cobra you need to create a bare main.go file and a rootCmd file. +You will optionally provide additional commands as you see fit. + +### Create rootCmd + +Cobra doesn't require any special constructors. Simply create your commands. + +Ideally you place this in app/cmd/root.go: + +```go +var rootCmd = &cobra.Command{ + Use: "hugo", + Short: "Hugo is a very fast static site generator", + Long: `A Fast and Flexible Static Site Generator built with + love by spf13 and friends in Go. + Complete documentation is available at https://gohugo.io/documentation/`, + Run: func(cmd *cobra.Command, args []string) { + // Do Stuff Here + }, +} + +func Execute() { + if err := rootCmd.Execute(); err != nil { + fmt.Fprintln(os.Stderr, err) + os.Exit(1) + } +} +``` + +You will additionally define flags and handle configuration in your init() function. + +For example cmd/root.go: + +```go +package cmd + +import ( + "fmt" + "os" + + "github.com/spf13/cobra" + "github.com/spf13/viper" +) + +var ( + // Used for flags. + cfgFile string + userLicense string + + rootCmd = &cobra.Command{ + Use: "cobra-cli", + Short: "A generator for Cobra based Applications", + Long: `Cobra is a CLI library for Go that empowers applications. +This application is a tool to generate the needed files +to quickly create a Cobra application.`, + } +) + +// Execute executes the root command. +func Execute() error { + return rootCmd.Execute() +} + +func init() { + cobra.OnInitialize(initConfig) + + rootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", "config file (default is $HOME/.cobra.yaml)") + rootCmd.PersistentFlags().StringP("author", "a", "YOUR NAME", "author name for copyright attribution") + rootCmd.PersistentFlags().StringVarP(&userLicense, "license", "l", "", "name of license for the project") + rootCmd.PersistentFlags().Bool("viper", true, "use Viper for configuration") + viper.BindPFlag("author", rootCmd.PersistentFlags().Lookup("author")) + viper.BindPFlag("useViper", rootCmd.PersistentFlags().Lookup("viper")) + viper.SetDefault("author", "NAME HERE ") + viper.SetDefault("license", "apache") + + rootCmd.AddCommand(addCmd) + rootCmd.AddCommand(initCmd) +} + +func initConfig() { + if cfgFile != "" { + // Use config file from the flag. + viper.SetConfigFile(cfgFile) + } else { + // Find home directory. + home, err := os.UserHomeDir() + cobra.CheckErr(err) + + // Search config in home directory with name ".cobra" (without extension). + viper.AddConfigPath(home) + viper.SetConfigType("yaml") + viper.SetConfigName(".cobra") + } + + viper.AutomaticEnv() + + if err := viper.ReadInConfig(); err == nil { + fmt.Println("Using config file:", viper.ConfigFileUsed()) + } +} +``` + +### Create your main.go + +With the root command you need to have your main function execute it. +Execute should be run on the root for clarity, though it can be called on any command. + +In a Cobra app, typically the main.go file is very bare. It serves one purpose: to initialize Cobra. + +```go +package main + +import ( + "{pathToYourApp}/cmd" +) + +func main() { + cmd.Execute() +} +``` + +### Create additional commands + +Additional commands can be defined and typically are each given their own file +inside of the cmd/ directory. + +If you wanted to create a version command you would create cmd/version.go and +populate it with the following: + +```go +package cmd + +import ( + "fmt" + + "github.com/spf13/cobra" +) + +func init() { + rootCmd.AddCommand(versionCmd) +} + +var versionCmd = &cobra.Command{ + Use: "version", + Short: "Print the version number of Hugo", + Long: `All software has versions. This is Hugo's`, + Run: func(cmd *cobra.Command, args []string) { + fmt.Println("Hugo Static Site Generator v0.9 -- HEAD") + }, +} +``` + +### Returning and handling errors + +If you wish to return an error to the caller of a command, `RunE` can be used. + +```go +package cmd + +import ( + "fmt" + + "github.com/spf13/cobra" +) + +func init() { + rootCmd.AddCommand(tryCmd) +} + +var tryCmd = &cobra.Command{ + Use: "try", + Short: "Try and possibly fail at something", + RunE: func(cmd *cobra.Command, args []string) error { + if err := someFunc(); err != nil { + return err + } + return nil + }, +} +``` + +The error can then be caught at the execute function call. + +## Working with Flags + +Flags provide modifiers to control how the action command operates. + +### Assign flags to a command + +Since the flags are defined and used in different locations, we need to +define a variable outside with the correct scope to assign the flag to +work with. + +```go +var Verbose bool +var Source string +``` + +There are two different approaches to assign a flag. + +### Persistent Flags + +A flag can be 'persistent', meaning that this flag will be available to the +command it's assigned to as well as every command under that command. For +global flags, assign a flag as a persistent flag on the root. + +```go +rootCmd.PersistentFlags().BoolVarP(&Verbose, "verbose", "v", false, "verbose output") +``` + +### Local Flags + +A flag can also be assigned locally, which will only apply to that specific command. + +```go +localCmd.Flags().StringVarP(&Source, "source", "s", "", "Source directory to read from") +``` + +### Local Flag on Parent Commands + +By default, Cobra only parses local flags on the target command, and any local flags on +parent commands are ignored. By enabling `Command.TraverseChildren`, Cobra will +parse local flags on each command before executing the target command. + +```go +command := cobra.Command{ + Use: "print [OPTIONS] [COMMANDS]", + TraverseChildren: true, +} +``` + +### Bind Flags with Config + +You can also bind your flags with [viper](https://github.com/spf13/viper): +```go +var author string + +func init() { + rootCmd.PersistentFlags().StringVar(&author, "author", "YOUR NAME", "Author name for copyright attribution") + viper.BindPFlag("author", rootCmd.PersistentFlags().Lookup("author")) +} +``` + +In this example, the persistent flag `author` is bound with `viper`. +**Note**: the variable `author` will not be set to the value from config, +when the `--author` flag is provided by user. + +More in [viper documentation](https://github.com/spf13/viper#working-with-flags). + +### Required flags + +Flags are optional by default. If instead you wish your command to report an error +when a flag has not been set, mark it as required: +```go +rootCmd.Flags().StringVarP(&Region, "region", "r", "", "AWS region (required)") +rootCmd.MarkFlagRequired("region") +``` + +Or, for persistent flags: +```go +rootCmd.PersistentFlags().StringVarP(&Region, "region", "r", "", "AWS region (required)") +rootCmd.MarkPersistentFlagRequired("region") +``` + +### Flag Groups + +If you have different flags that must be provided together (e.g. if they provide the `--username` flag they MUST provide the `--password` flag as well) then +Cobra can enforce that requirement: +```go +rootCmd.Flags().StringVarP(&u, "username", "u", "", "Username (required if password is set)") +rootCmd.Flags().StringVarP(&pw, "password", "p", "", "Password (required if username is set)") +rootCmd.MarkFlagsRequiredTogether("username", "password") +``` + +You can also prevent different flags from being provided together if they represent mutually +exclusive options such as specifying an output format as either `--json` or `--yaml` but never both: +```go +rootCmd.Flags().BoolVar(&u, "json", false, "Output in JSON") +rootCmd.Flags().BoolVar(&pw, "yaml", false, "Output in YAML") +rootCmd.MarkFlagsMutuallyExclusive("json", "yaml") +``` + +In both of these cases: + - both local and persistent flags can be used + - **NOTE:** the group is only enforced on commands where every flag is defined + - a flag may appear in multiple groups + - a group may contain any number of flags + +## Positional and Custom Arguments + +Validation of positional arguments can be specified using the `Args` field of `Command`. +The following validators are built in: + +- Number of arguments: + - `NoArgs` - report an error if there are any positional args. + - `ArbitraryArgs` - accept any number of args. + - `MinimumNArgs(int)` - report an error if less than N positional args are provided. + - `MaximumNArgs(int)` - report an error if more than N positional args are provided. + - `ExactArgs(int)` - report an error if there are not exactly N positional args. + - `RangeArgs(min, max)` - report an error if the number of args is not between `min` and `max`. +- Content of the arguments: + - `OnlyValidArgs` - report an error if there are any positional args not specified in the `ValidArgs` field of `Command`, which can optionally be set to a list of valid values for positional args. + +If `Args` is undefined or `nil`, it defaults to `ArbitraryArgs`. + +Moreover, `MatchAll(pargs ...PositionalArgs)` enables combining existing checks with arbitrary other checks. +For instance, if you want to report an error if there are not exactly N positional args OR if there are any positional +args that are not in the `ValidArgs` field of `Command`, you can call `MatchAll` on `ExactArgs` and `OnlyValidArgs`, as +shown below: + +```go +var cmd = &cobra.Command{ + Short: "hello", + Args: MatchAll(ExactArgs(2), OnlyValidArgs), + Run: func(cmd *cobra.Command, args []string) { + fmt.Println("Hello, World!") + }, +} +``` + +It is possible to set any custom validator that satisfies `func(cmd *cobra.Command, args []string) error`. +For example: + +```go +var cmd = &cobra.Command{ + Short: "hello", + Args: func(cmd *cobra.Command, args []string) error { + // Optionally run one of the validators provided by cobra + if err := cobra.MinimumNArgs(1)(cmd, args); err != nil { + return err + } + // Run the custom validation logic + if myapp.IsValidColor(args[0]) { + return nil + } + return fmt.Errorf("invalid color specified: %s", args[0]) + }, + Run: func(cmd *cobra.Command, args []string) { + fmt.Println("Hello, World!") + }, +} +``` + +## Example + +In the example below, we have defined three commands. Two are at the top level +and one (cmdTimes) is a child of one of the top commands. In this case the root +is not executable, meaning that a subcommand is required. This is accomplished +by not providing a 'Run' for the 'rootCmd'. + +We have only defined one flag for a single command. + +More documentation about flags is available at https://github.com/spf13/pflag + +```go +package main + +import ( + "fmt" + "strings" + + "github.com/spf13/cobra" +) + +func main() { + var echoTimes int + + var cmdPrint = &cobra.Command{ + Use: "print [string to print]", + Short: "Print anything to the screen", + Long: `print is for printing anything back to the screen. +For many years people have printed back to the screen.`, + Args: cobra.MinimumNArgs(1), + Run: func(cmd *cobra.Command, args []string) { + fmt.Println("Print: " + strings.Join(args, " ")) + }, + } + + var cmdEcho = &cobra.Command{ + Use: "echo [string to echo]", + Short: "Echo anything to the screen", + Long: `echo is for echoing anything back. +Echo works a lot like print, except it has a child command.`, + Args: cobra.MinimumNArgs(1), + Run: func(cmd *cobra.Command, args []string) { + fmt.Println("Echo: " + strings.Join(args, " ")) + }, + } + + var cmdTimes = &cobra.Command{ + Use: "times [string to echo]", + Short: "Echo anything to the screen more times", + Long: `echo things multiple times back to the user by providing +a count and a string.`, + Args: cobra.MinimumNArgs(1), + Run: func(cmd *cobra.Command, args []string) { + for i := 0; i < echoTimes; i++ { + fmt.Println("Echo: " + strings.Join(args, " ")) + } + }, + } + + cmdTimes.Flags().IntVarP(&echoTimes, "times", "t", 1, "times to echo the input") + + var rootCmd = &cobra.Command{Use: "app"} + rootCmd.AddCommand(cmdPrint, cmdEcho) + cmdEcho.AddCommand(cmdTimes) + rootCmd.Execute() +} +``` + +For a more complete example of a larger application, please checkout [Hugo](https://gohugo.io/). + +## Help Command + +Cobra automatically adds a help command to your application when you have subcommands. +This will be called when a user runs 'app help'. Additionally, help will also +support all other commands as input. Say, for instance, you have a command called +'create' without any additional configuration; Cobra will work when 'app help +create' is called. Every command will automatically have the '--help' flag added. + +### Example + +The following output is automatically generated by Cobra. Nothing beyond the +command and flag definitions are needed. + + $ cobra-cli help + + Cobra is a CLI library for Go that empowers applications. + This application is a tool to generate the needed files + to quickly create a Cobra application. + + Usage: + cobra-cli [command] + + Available Commands: + add Add a command to a Cobra Application + completion Generate the autocompletion script for the specified shell + help Help about any command + init Initialize a Cobra Application + + Flags: + -a, --author string author name for copyright attribution (default "YOUR NAME") + --config string config file (default is $HOME/.cobra.yaml) + -h, --help help for cobra-cli + -l, --license string name of license for the project + --viper use Viper for configuration + + Use "cobra-cli [command] --help" for more information about a command. + + +Help is just a command like any other. There is no special logic or behavior +around it. In fact, you can provide your own if you want. + +### Grouping commands in help + +Cobra supports grouping of available commands in the help output. To group commands, each group must be explicitly +defined using `AddGroup()` on the parent command. Then a subcommand can be added to a group using the `GroupID` element +of that subcommand. The groups will appear in the help output in the same order as they are defined using different +calls to `AddGroup()`. If you use the generated `help` or `completion` commands, you can set their group ids using +`SetHelpCommandGroupId()` and `SetCompletionCommandGroupId()` on the root command, respectively. + +### Defining your own help + +You can provide your own Help command or your own template for the default command to use +with the following functions: + +```go +cmd.SetHelpCommand(cmd *Command) +cmd.SetHelpFunc(f func(*Command, []string)) +cmd.SetHelpTemplate(s string) +``` + +The latter two will also apply to any children commands. + +## Usage Message + +When the user provides an invalid flag or invalid command, Cobra responds by +showing the user the 'usage'. + +### Example +You may recognize this from the help above. That's because the default help +embeds the usage as part of its output. + + $ cobra-cli --invalid + Error: unknown flag: --invalid + Usage: + cobra-cli [command] + + Available Commands: + add Add a command to a Cobra Application + completion Generate the autocompletion script for the specified shell + help Help about any command + init Initialize a Cobra Application + + Flags: + -a, --author string author name for copyright attribution (default "YOUR NAME") + --config string config file (default is $HOME/.cobra.yaml) + -h, --help help for cobra-cli + -l, --license string name of license for the project + --viper use Viper for configuration + + Use "cobra [command] --help" for more information about a command. + +### Defining your own usage +You can provide your own usage function or template for Cobra to use. +Like help, the function and template are overridable through public methods: + +```go +cmd.SetUsageFunc(f func(*Command) error) +cmd.SetUsageTemplate(s string) +``` + +## Version Flag + +Cobra adds a top-level '--version' flag if the Version field is set on the root command. +Running an application with the '--version' flag will print the version to stdout using +the version template. The template can be customized using the +`cmd.SetVersionTemplate(s string)` function. + +## PreRun and PostRun Hooks + +It is possible to run functions before or after the main `Run` function of your command. The `PersistentPreRun` and `PreRun` functions will be executed before `Run`. `PersistentPostRun` and `PostRun` will be executed after `Run`. The `Persistent*Run` functions will be inherited by children if they do not declare their own. These functions are run in the following order: + +- `PersistentPreRun` +- `PreRun` +- `Run` +- `PostRun` +- `PersistentPostRun` + +An example of two commands which use all of these features is below. When the subcommand is executed, it will run the root command's `PersistentPreRun` but not the root command's `PersistentPostRun`: + +```go +package main + +import ( + "fmt" + + "github.com/spf13/cobra" +) + +func main() { + + var rootCmd = &cobra.Command{ + Use: "root [sub]", + Short: "My root command", + PersistentPreRun: func(cmd *cobra.Command, args []string) { + fmt.Printf("Inside rootCmd PersistentPreRun with args: %v\n", args) + }, + PreRun: func(cmd *cobra.Command, args []string) { + fmt.Printf("Inside rootCmd PreRun with args: %v\n", args) + }, + Run: func(cmd *cobra.Command, args []string) { + fmt.Printf("Inside rootCmd Run with args: %v\n", args) + }, + PostRun: func(cmd *cobra.Command, args []string) { + fmt.Printf("Inside rootCmd PostRun with args: %v\n", args) + }, + PersistentPostRun: func(cmd *cobra.Command, args []string) { + fmt.Printf("Inside rootCmd PersistentPostRun with args: %v\n", args) + }, + } + + var subCmd = &cobra.Command{ + Use: "sub [no options!]", + Short: "My subcommand", + PreRun: func(cmd *cobra.Command, args []string) { + fmt.Printf("Inside subCmd PreRun with args: %v\n", args) + }, + Run: func(cmd *cobra.Command, args []string) { + fmt.Printf("Inside subCmd Run with args: %v\n", args) + }, + PostRun: func(cmd *cobra.Command, args []string) { + fmt.Printf("Inside subCmd PostRun with args: %v\n", args) + }, + PersistentPostRun: func(cmd *cobra.Command, args []string) { + fmt.Printf("Inside subCmd PersistentPostRun with args: %v\n", args) + }, + } + + rootCmd.AddCommand(subCmd) + + rootCmd.SetArgs([]string{""}) + rootCmd.Execute() + fmt.Println() + rootCmd.SetArgs([]string{"sub", "arg1", "arg2"}) + rootCmd.Execute() +} +``` + +Output: +``` +Inside rootCmd PersistentPreRun with args: [] +Inside rootCmd PreRun with args: [] +Inside rootCmd Run with args: [] +Inside rootCmd PostRun with args: [] +Inside rootCmd PersistentPostRun with args: [] + +Inside rootCmd PersistentPreRun with args: [arg1 arg2] +Inside subCmd PreRun with args: [arg1 arg2] +Inside subCmd Run with args: [arg1 arg2] +Inside subCmd PostRun with args: [arg1 arg2] +Inside subCmd PersistentPostRun with args: [arg1 arg2] +``` + +## Suggestions when "unknown command" happens + +Cobra will print automatic suggestions when "unknown command" errors happen. This allows Cobra to behave similarly to the `git` command when a typo happens. For example: + +``` +$ hugo srever +Error: unknown command "srever" for "hugo" + +Did you mean this? + server + +Run 'hugo --help' for usage. +``` + +Suggestions are automatically generated based on existing subcommands and use an implementation of [Levenshtein distance](https://en.wikipedia.org/wiki/Levenshtein_distance). Every registered command that matches a minimum distance of 2 (ignoring case) will be displayed as a suggestion. + +If you need to disable suggestions or tweak the string distance in your command, use: + +```go +command.DisableSuggestions = true +``` + +or + +```go +command.SuggestionsMinimumDistance = 1 +``` + +You can also explicitly set names for which a given command will be suggested using the `SuggestFor` attribute. This allows suggestions for strings that are not close in terms of string distance, but make sense in your set of commands but for which +you don't want aliases. Example: + +``` +$ kubectl remove +Error: unknown command "remove" for "kubectl" + +Did you mean this? + delete + +Run 'kubectl help' for usage. +``` + +## Generating documentation for your command + +Cobra can generate documentation based on subcommands, flags, etc. Read more about it in the [docs generation documentation](doc/README.md). + +## Generating shell completions + +Cobra can generate a shell-completion file for the following shells: bash, zsh, fish, PowerShell. If you add more information to your commands, these completions can be amazingly powerful and flexible. Read more about it in [Shell Completions](shell_completions.md). + +## Providing Active Help + +Cobra makes use of the shell-completion system to define a framework allowing you to provide Active Help to your users. Active Help are messages (hints, warnings, etc) printed as the program is being used. Read more about it in [Active Help](active_help.md). diff --git a/vendor/github.com/spf13/cobra/zsh_completions.go b/vendor/github.com/spf13/cobra/zsh_completions.go index 12755482f..84cec76fd 100644 --- a/vendor/github.com/spf13/cobra/zsh_completions.go +++ b/vendor/github.com/spf13/cobra/zsh_completions.go @@ -1,336 +1,301 @@ +// Copyright 2013-2022 The Cobra Authors +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + package cobra import ( - "encoding/json" + "bytes" "fmt" "io" "os" - "sort" - "strings" - "text/template" - - "github.com/spf13/pflag" -) - -const ( - zshCompArgumentAnnotation = "cobra_annotations_zsh_completion_argument_annotation" - zshCompArgumentFilenameComp = "cobra_annotations_zsh_completion_argument_file_completion" - zshCompArgumentWordComp = "cobra_annotations_zsh_completion_argument_word_completion" - zshCompDirname = "cobra_annotations_zsh_dirname" -) - -var ( - zshCompFuncMap = template.FuncMap{ - "genZshFuncName": zshCompGenFuncName, - "extractFlags": zshCompExtractFlag, - "genFlagEntryForZshArguments": zshCompGenFlagEntryForArguments, - "extractArgsCompletions": zshCompExtractArgumentCompletionHintsForRendering, - } - zshCompletionText = ` -{{/* should accept Command (that contains subcommands) as parameter */}} -{{define "argumentsC" -}} -{{ $cmdPath := genZshFuncName .}} -function {{$cmdPath}} { - local -a commands - - _arguments -C \{{- range extractFlags .}} - {{genFlagEntryForZshArguments .}} \{{- end}} - "1: :->cmnds" \ - "*::arg:->args" - - case $state in - cmnds) - commands=({{range .Commands}}{{if not .Hidden}} - "{{.Name}}:{{.Short}}"{{end}}{{end}} - ) - _describe "command" commands - ;; - esac - - case "$words[1]" in {{- range .Commands}}{{if not .Hidden}} - {{.Name}}) - {{$cmdPath}}_{{.Name}} - ;;{{end}}{{end}} - esac -} -{{range .Commands}}{{if not .Hidden}} -{{template "selectCmdTemplate" .}} -{{- end}}{{end}} -{{- end}} - -{{/* should accept Command without subcommands as parameter */}} -{{define "arguments" -}} -function {{genZshFuncName .}} { -{{" _arguments"}}{{range extractFlags .}} \ - {{genFlagEntryForZshArguments . -}} -{{end}}{{range extractArgsCompletions .}} \ - {{.}}{{end}} -} -{{end}} - -{{/* dispatcher for commands with or without subcommands */}} -{{define "selectCmdTemplate" -}} -{{if .Hidden}}{{/* ignore hidden*/}}{{else -}} -{{if .Commands}}{{template "argumentsC" .}}{{else}}{{template "arguments" .}}{{end}} -{{- end}} -{{- end}} - -{{/* template entry point */}} -{{define "Main" -}} -#compdef _{{.Name}} {{.Name}} - -{{template "selectCmdTemplate" .}} -{{end}} -` ) -// zshCompArgsAnnotation is used to encode/decode zsh completion for -// arguments to/from Command.Annotations. -type zshCompArgsAnnotation map[int]zshCompArgHint - -type zshCompArgHint struct { - // Indicates the type of the completion to use. One of: - // zshCompArgumentFilenameComp or zshCompArgumentWordComp - Tipe string `json:"type"` - - // A value for the type above (globs for file completion or words) - Options []string `json:"options"` -} - -// GenZshCompletionFile generates zsh completion file. +// GenZshCompletionFile generates zsh completion file including descriptions. func (c *Command) GenZshCompletionFile(filename string) error { - outFile, err := os.Create(filename) - if err != nil { - return err - } - defer outFile.Close() - - return c.GenZshCompletion(outFile) + return c.genZshCompletionFile(filename, true) } -// GenZshCompletion generates a zsh completion file and writes to the passed -// writer. The completion always run on the root command regardless of the -// command it was called from. +// GenZshCompletion generates zsh completion file including descriptions +// and writes it to the passed writer. func (c *Command) GenZshCompletion(w io.Writer) error { - tmpl, err := template.New("Main").Funcs(zshCompFuncMap).Parse(zshCompletionText) - if err != nil { - return fmt.Errorf("error creating zsh completion template: %v", err) - } - return tmpl.Execute(w, c.Root()) -} - -// MarkZshCompPositionalArgumentFile marks the specified argument (first -// argument is 1) as completed by file selection. patterns (e.g. "*.txt") are -// optional - if not provided the completion will search for all files. -func (c *Command) MarkZshCompPositionalArgumentFile(argPosition int, patterns ...string) error { - if argPosition < 1 { - return fmt.Errorf("Invalid argument position (%d)", argPosition) - } - annotation, err := c.zshCompGetArgsAnnotations() - if err != nil { - return err - } - if c.zshcompArgsAnnotationnIsDuplicatePosition(annotation, argPosition) { - return fmt.Errorf("Duplicate annotation for positional argument at index %d", argPosition) - } - annotation[argPosition] = zshCompArgHint{ - Tipe: zshCompArgumentFilenameComp, - Options: patterns, - } - return c.zshCompSetArgsAnnotations(annotation) -} - -// MarkZshCompPositionalArgumentWords marks the specified positional argument -// (first argument is 1) as completed by the provided words. At east one word -// must be provided, spaces within words will be offered completion with -// "word\ word". -func (c *Command) MarkZshCompPositionalArgumentWords(argPosition int, words ...string) error { - if argPosition < 1 { - return fmt.Errorf("Invalid argument position (%d)", argPosition) - } - if len(words) == 0 { - return fmt.Errorf("Trying to set empty word list for positional argument %d", argPosition) - } - annotation, err := c.zshCompGetArgsAnnotations() - if err != nil { - return err - } - if c.zshcompArgsAnnotationnIsDuplicatePosition(annotation, argPosition) { - return fmt.Errorf("Duplicate annotation for positional argument at index %d", argPosition) - } - annotation[argPosition] = zshCompArgHint{ - Tipe: zshCompArgumentWordComp, - Options: words, - } - return c.zshCompSetArgsAnnotations(annotation) -} - -func zshCompExtractArgumentCompletionHintsForRendering(c *Command) ([]string, error) { - var result []string - annotation, err := c.zshCompGetArgsAnnotations() - if err != nil { - return nil, err - } - for k, v := range annotation { - s, err := zshCompRenderZshCompArgHint(k, v) - if err != nil { - return nil, err - } - result = append(result, s) - } - if len(c.ValidArgs) > 0 { - if _, positionOneExists := annotation[1]; !positionOneExists { - s, err := zshCompRenderZshCompArgHint(1, zshCompArgHint{ - Tipe: zshCompArgumentWordComp, - Options: c.ValidArgs, - }) - if err != nil { - return nil, err - } - result = append(result, s) - } - } - sort.Strings(result) - return result, nil + return c.genZshCompletion(w, true) } -func zshCompRenderZshCompArgHint(i int, z zshCompArgHint) (string, error) { - switch t := z.Tipe; t { - case zshCompArgumentFilenameComp: - var globs []string - for _, g := range z.Options { - globs = append(globs, fmt.Sprintf(`-g "%s"`, g)) - } - return fmt.Sprintf(`'%d: :_files %s'`, i, strings.Join(globs, " ")), nil - case zshCompArgumentWordComp: - var words []string - for _, w := range z.Options { - words = append(words, fmt.Sprintf("%q", w)) - } - return fmt.Sprintf(`'%d: :(%s)'`, i, strings.Join(words, " ")), nil - default: - return "", fmt.Errorf("Invalid zsh argument completion annotation: %s", t) - } +// GenZshCompletionFileNoDesc generates zsh completion file without descriptions. +func (c *Command) GenZshCompletionFileNoDesc(filename string) error { + return c.genZshCompletionFile(filename, false) } -func (c *Command) zshcompArgsAnnotationnIsDuplicatePosition(annotation zshCompArgsAnnotation, position int) bool { - _, dup := annotation[position] - return dup +// GenZshCompletionNoDesc generates zsh completion file without descriptions +// and writes it to the passed writer. +func (c *Command) GenZshCompletionNoDesc(w io.Writer) error { + return c.genZshCompletion(w, false) } -func (c *Command) zshCompGetArgsAnnotations() (zshCompArgsAnnotation, error) { - annotation := make(zshCompArgsAnnotation) - annotationString, ok := c.Annotations[zshCompArgumentAnnotation] - if !ok { - return annotation, nil - } - err := json.Unmarshal([]byte(annotationString), &annotation) - if err != nil { - return annotation, fmt.Errorf("Error unmarshaling zsh argument annotation: %v", err) - } - return annotation, nil -} - -func (c *Command) zshCompSetArgsAnnotations(annotation zshCompArgsAnnotation) error { - jsn, err := json.Marshal(annotation) - if err != nil { - return fmt.Errorf("Error marshaling zsh argument annotation: %v", err) - } - if c.Annotations == nil { - c.Annotations = make(map[string]string) - } - c.Annotations[zshCompArgumentAnnotation] = string(jsn) +// MarkZshCompPositionalArgumentFile only worked for zsh and its behavior was +// not consistent with Bash completion. It has therefore been disabled. +// Instead, when no other completion is specified, file completion is done by +// default for every argument. One can disable file completion on a per-argument +// basis by using ValidArgsFunction and ShellCompDirectiveNoFileComp. +// To achieve file extension filtering, one can use ValidArgsFunction and +// ShellCompDirectiveFilterFileExt. +// +// Deprecated +func (c *Command) MarkZshCompPositionalArgumentFile(argPosition int, patterns ...string) error { return nil } -func zshCompGenFuncName(c *Command) string { - if c.HasParent() { - return zshCompGenFuncName(c.Parent()) + "_" + c.Name() - } - return "_" + c.Name() -} - -func zshCompExtractFlag(c *Command) []*pflag.Flag { - var flags []*pflag.Flag - c.LocalFlags().VisitAll(func(f *pflag.Flag) { - if !f.Hidden { - flags = append(flags, f) - } - }) - c.InheritedFlags().VisitAll(func(f *pflag.Flag) { - if !f.Hidden { - flags = append(flags, f) - } - }) - return flags -} - -// zshCompGenFlagEntryForArguments returns an entry that matches _arguments -// zsh-completion parameters. It's too complicated to generate in a template. -func zshCompGenFlagEntryForArguments(f *pflag.Flag) string { - if f.Name == "" || f.Shorthand == "" { - return zshCompGenFlagEntryForSingleOptionFlag(f) - } - return zshCompGenFlagEntryForMultiOptionFlag(f) +// MarkZshCompPositionalArgumentWords only worked for zsh. It has therefore +// been disabled. +// To achieve the same behavior across all shells, one can use +// ValidArgs (for the first argument only) or ValidArgsFunction for +// any argument (can include the first one also). +// +// Deprecated +func (c *Command) MarkZshCompPositionalArgumentWords(argPosition int, words ...string) error { + return nil } -func zshCompGenFlagEntryForSingleOptionFlag(f *pflag.Flag) string { - var option, multiMark, extras string - - if zshCompFlagCouldBeSpecifiedMoreThenOnce(f) { - multiMark = "*" - } - - option = "--" + f.Name - if option == "--" { - option = "-" + f.Shorthand +func (c *Command) genZshCompletionFile(filename string, includeDesc bool) error { + outFile, err := os.Create(filename) + if err != nil { + return err } - extras = zshCompGenFlagEntryExtras(f) + defer outFile.Close() - return fmt.Sprintf(`'%s%s[%s]%s'`, multiMark, option, zshCompQuoteFlagDescription(f.Usage), extras) + return c.genZshCompletion(outFile, includeDesc) } -func zshCompGenFlagEntryForMultiOptionFlag(f *pflag.Flag) string { - var options, parenMultiMark, curlyMultiMark, extras string - - if zshCompFlagCouldBeSpecifiedMoreThenOnce(f) { - parenMultiMark = "*" - curlyMultiMark = "\\*" - } - - options = fmt.Sprintf(`'(%s-%s %s--%s)'{%s-%s,%s--%s}`, - parenMultiMark, f.Shorthand, parenMultiMark, f.Name, curlyMultiMark, f.Shorthand, curlyMultiMark, f.Name) - extras = zshCompGenFlagEntryExtras(f) - - return fmt.Sprintf(`%s'[%s]%s'`, options, zshCompQuoteFlagDescription(f.Usage), extras) +func (c *Command) genZshCompletion(w io.Writer, includeDesc bool) error { + buf := new(bytes.Buffer) + genZshComp(buf, c.Name(), includeDesc) + _, err := buf.WriteTo(w) + return err } -func zshCompGenFlagEntryExtras(f *pflag.Flag) string { - if f.NoOptDefVal != "" { - return "" +func genZshComp(buf io.StringWriter, name string, includeDesc bool) { + compCmd := ShellCompRequestCmd + if !includeDesc { + compCmd = ShellCompNoDescRequestCmd } + WriteStringAndCheck(buf, fmt.Sprintf(`#compdef %[1]s - extras := ":" // allow options for flag (even without assistance) - for key, values := range f.Annotations { - switch key { - case zshCompDirname: - extras = fmt.Sprintf(":filename:_files -g %q", values[0]) - case BashCompFilenameExt: - extras = ":filename:_files" - for _, pattern := range values { - extras = extras + fmt.Sprintf(` -g "%s"`, pattern) - } - } - } +# zsh completion for %-36[1]s -*- shell-script -*- - return extras +__%[1]s_debug() +{ + local file="$BASH_COMP_DEBUG_FILE" + if [[ -n ${file} ]]; then + echo "$*" >> "${file}" + fi } -func zshCompFlagCouldBeSpecifiedMoreThenOnce(f *pflag.Flag) bool { - return strings.Contains(f.Value.Type(), "Slice") || - strings.Contains(f.Value.Type(), "Array") +_%[1]s() +{ + local shellCompDirectiveError=%[3]d + local shellCompDirectiveNoSpace=%[4]d + local shellCompDirectiveNoFileComp=%[5]d + local shellCompDirectiveFilterFileExt=%[6]d + local shellCompDirectiveFilterDirs=%[7]d + + local lastParam lastChar flagPrefix requestComp out directive comp lastComp noSpace + local -a completions + + __%[1]s_debug "\n========= starting completion logic ==========" + __%[1]s_debug "CURRENT: ${CURRENT}, words[*]: ${words[*]}" + + # The user could have moved the cursor backwards on the command-line. + # We need to trigger completion from the $CURRENT location, so we need + # to truncate the command-line ($words) up to the $CURRENT location. + # (We cannot use $CURSOR as its value does not work when a command is an alias.) + words=("${=words[1,CURRENT]}") + __%[1]s_debug "Truncated words[*]: ${words[*]}," + + lastParam=${words[-1]} + lastChar=${lastParam[-1]} + __%[1]s_debug "lastParam: ${lastParam}, lastChar: ${lastChar}" + + # For zsh, when completing a flag with an = (e.g., %[1]s -n=) + # completions must be prefixed with the flag + setopt local_options BASH_REMATCH + if [[ "${lastParam}" =~ '-.*=' ]]; then + # We are dealing with a flag with an = + flagPrefix="-P ${BASH_REMATCH}" + fi + + # Prepare the command to obtain completions + requestComp="${words[1]} %[2]s ${words[2,-1]}" + if [ "${lastChar}" = "" ]; then + # If the last parameter is complete (there is a space following it) + # We add an extra empty parameter so we can indicate this to the go completion code. + __%[1]s_debug "Adding extra empty parameter" + requestComp="${requestComp} \"\"" + fi + + __%[1]s_debug "About to call: eval ${requestComp}" + + # Use eval to handle any environment variables and such + out=$(eval ${requestComp} 2>/dev/null) + __%[1]s_debug "completion output: ${out}" + + # Extract the directive integer following a : from the last line + local lastLine + while IFS='\n' read -r line; do + lastLine=${line} + done < <(printf "%%s\n" "${out[@]}") + __%[1]s_debug "last line: ${lastLine}" + + if [ "${lastLine[1]}" = : ]; then + directive=${lastLine[2,-1]} + # Remove the directive including the : and the newline + local suffix + (( suffix=${#lastLine}+2)) + out=${out[1,-$suffix]} + else + # There is no directive specified. Leave $out as is. + __%[1]s_debug "No directive found. Setting do default" + directive=0 + fi + + __%[1]s_debug "directive: ${directive}" + __%[1]s_debug "completions: ${out}" + __%[1]s_debug "flagPrefix: ${flagPrefix}" + + if [ $((directive & shellCompDirectiveError)) -ne 0 ]; then + __%[1]s_debug "Completion received error. Ignoring completions." + return + fi + + local activeHelpMarker="%[8]s" + local endIndex=${#activeHelpMarker} + local startIndex=$((${#activeHelpMarker}+1)) + local hasActiveHelp=0 + while IFS='\n' read -r comp; do + # Check if this is an activeHelp statement (i.e., prefixed with $activeHelpMarker) + if [ "${comp[1,$endIndex]}" = "$activeHelpMarker" ];then + __%[1]s_debug "ActiveHelp found: $comp" + comp="${comp[$startIndex,-1]}" + if [ -n "$comp" ]; then + compadd -x "${comp}" + __%[1]s_debug "ActiveHelp will need delimiter" + hasActiveHelp=1 + fi + + continue + fi + + if [ -n "$comp" ]; then + # If requested, completions are returned with a description. + # The description is preceded by a TAB character. + # For zsh's _describe, we need to use a : instead of a TAB. + # We first need to escape any : as part of the completion itself. + comp=${comp//:/\\:} + + local tab="$(printf '\t')" + comp=${comp//$tab/:} + + __%[1]s_debug "Adding completion: ${comp}" + completions+=${comp} + lastComp=$comp + fi + done < <(printf "%%s\n" "${out[@]}") + + # Add a delimiter after the activeHelp statements, but only if: + # - there are completions following the activeHelp statements, or + # - file completion will be performed (so there will be choices after the activeHelp) + if [ $hasActiveHelp -eq 1 ]; then + if [ ${#completions} -ne 0 ] || [ $((directive & shellCompDirectiveNoFileComp)) -eq 0 ]; then + __%[1]s_debug "Adding activeHelp delimiter" + compadd -x "--" + hasActiveHelp=0 + fi + fi + + if [ $((directive & shellCompDirectiveNoSpace)) -ne 0 ]; then + __%[1]s_debug "Activating nospace." + noSpace="-S ''" + fi + + if [ $((directive & shellCompDirectiveFilterFileExt)) -ne 0 ]; then + # File extension filtering + local filteringCmd + filteringCmd='_files' + for filter in ${completions[@]}; do + if [ ${filter[1]} != '*' ]; then + # zsh requires a glob pattern to do file filtering + filter="\*.$filter" + fi + filteringCmd+=" -g $filter" + done + filteringCmd+=" ${flagPrefix}" + + __%[1]s_debug "File filtering command: $filteringCmd" + _arguments '*:filename:'"$filteringCmd" + elif [ $((directive & shellCompDirectiveFilterDirs)) -ne 0 ]; then + # File completion for directories only + local subdir + subdir="${completions[1]}" + if [ -n "$subdir" ]; then + __%[1]s_debug "Listing directories in $subdir" + pushd "${subdir}" >/dev/null 2>&1 + else + __%[1]s_debug "Listing directories in ." + fi + + local result + _arguments '*:dirname:_files -/'" ${flagPrefix}" + result=$? + if [ -n "$subdir" ]; then + popd >/dev/null 2>&1 + fi + return $result + else + __%[1]s_debug "Calling _describe" + if eval _describe "completions" completions $flagPrefix $noSpace; then + __%[1]s_debug "_describe found some completions" + + # Return the success of having called _describe + return 0 + else + __%[1]s_debug "_describe did not find completions." + __%[1]s_debug "Checking if we should do file completion." + if [ $((directive & shellCompDirectiveNoFileComp)) -ne 0 ]; then + __%[1]s_debug "deactivating file completion" + + # We must return an error code here to let zsh know that there were no + # completions found by _describe; this is what will trigger other + # matching algorithms to attempt to find completions. + # For example zsh can match letters in the middle of words. + return 1 + else + # Perform file completion + __%[1]s_debug "Activating file completion" + + # We must return the result of this command, so it must be the + # last command, or else we must store its result to return it. + _arguments '*:filename:_files'" ${flagPrefix}" + fi + fi + fi } -func zshCompQuoteFlagDescription(s string) string { - return strings.Replace(s, "'", `'\''`, -1) +# don't run the completion function when being source-ed or eval-ed +if [ "$funcstack[1]" = "_%[1]s" ]; then + _%[1]s +fi +`, name, compCmd, + ShellCompDirectiveError, ShellCompDirectiveNoSpace, ShellCompDirectiveNoFileComp, + ShellCompDirectiveFilterFileExt, ShellCompDirectiveFilterDirs, + activeHelpMarker)) } diff --git a/vendor/github.com/spf13/cobra/zsh_completions.md b/vendor/github.com/spf13/cobra/zsh_completions.md index df9c2eac9..7cff61787 100644 --- a/vendor/github.com/spf13/cobra/zsh_completions.md +++ b/vendor/github.com/spf13/cobra/zsh_completions.md @@ -1,39 +1,48 @@ -## Generating Zsh Completion for your cobra.Command - -Cobra supports native Zsh completion generated from the root `cobra.Command`. -The generated completion script should be put somewhere in your `$fpath` named -`_`. - -### What's Supported - -* Completion for all non-hidden subcommands using their `.Short` description. -* Completion for all non-hidden flags using the following rules: - * Filename completion works by marking the flag with `cmd.MarkFlagFilename...` - family of commands. - * The requirement for argument to the flag is decided by the `.NoOptDefVal` - flag value - if it's empty then completion will expect an argument. - * Flags of one of the various `*Array` and `*Slice` types supports multiple - specifications (with or without argument depending on the specific type). -* Completion of positional arguments using the following rules: - * Argument position for all options below starts at `1`. If argument position - `0` is requested it will raise an error. - * Use `command.MarkZshCompPositionalArgumentFile` to complete filenames. Glob - patterns (e.g. `"*.log"`) are optional - if not specified it will offer to - complete all file types. - * Use `command.MarkZshCompPositionalArgumentWords` to offer specific words for - completion. At least one word is required. - * It's possible to specify completion for some arguments and leave some - unspecified (e.g. offer words for second argument but nothing for first - argument). This will cause no completion for first argument but words - completion for second argument. - * If no argument completion was specified for 1st argument (but optionally was - specified for 2nd) and the command has `ValidArgs` it will be used as - completion options for 1st argument. - * Argument completions only offered for commands with no subcommands. - -### What's not yet Supported - -* Custom completion scripts are not supported yet (We should probably create zsh - specific one, doesn't make sense to re-use the bash one as the functions will - be different). -* Whatever other feature you're looking for and doesn't exist :) +## Generating Zsh Completion For Your cobra.Command + +Please refer to [Shell Completions](shell_completions.md) for details. + +## Zsh completions standardization + +Cobra 1.1 standardized its zsh completion support to align it with its other shell completions. Although the API was kept backwards-compatible, some small changes in behavior were introduced. + +### Deprecation summary + +See further below for more details on these deprecations. + +* `cmd.MarkZshCompPositionalArgumentFile(pos, []string{})` is no longer needed. It is therefore **deprecated** and silently ignored. +* `cmd.MarkZshCompPositionalArgumentFile(pos, glob[])` is **deprecated** and silently ignored. + * Instead use `ValidArgsFunction` with `ShellCompDirectiveFilterFileExt`. +* `cmd.MarkZshCompPositionalArgumentWords()` is **deprecated** and silently ignored. + * Instead use `ValidArgsFunction`. + +### Behavioral changes + +**Noun completion** +|Old behavior|New behavior| +|---|---| +|No file completion by default (opposite of bash)|File completion by default; use `ValidArgsFunction` with `ShellCompDirectiveNoFileComp` to turn off file completion on a per-argument basis| +|Completion of flag names without the `-` prefix having been typed|Flag names are only completed if the user has typed the first `-`| +`cmd.MarkZshCompPositionalArgumentFile(pos, []string{})` used to turn on file completion on a per-argument position basis|File completion for all arguments by default; `cmd.MarkZshCompPositionalArgumentFile()` is **deprecated** and silently ignored| +|`cmd.MarkZshCompPositionalArgumentFile(pos, glob[])` used to turn on file completion **with glob filtering** on a per-argument position basis (zsh-specific)|`cmd.MarkZshCompPositionalArgumentFile()` is **deprecated** and silently ignored; use `ValidArgsFunction` with `ShellCompDirectiveFilterFileExt` for file **extension** filtering (not full glob filtering)| +|`cmd.MarkZshCompPositionalArgumentWords(pos, words[])` used to provide completion choices on a per-argument position basis (zsh-specific)|`cmd.MarkZshCompPositionalArgumentWords()` is **deprecated** and silently ignored; use `ValidArgsFunction` to achieve the same behavior| + +**Flag-value completion** + +|Old behavior|New behavior| +|---|---| +|No file completion by default (opposite of bash)|File completion by default; use `RegisterFlagCompletionFunc()` with `ShellCompDirectiveNoFileComp` to turn off file completion| +|`cmd.MarkFlagFilename(flag, []string{})` and similar used to turn on file completion|File completion by default; `cmd.MarkFlagFilename(flag, []string{})` no longer needed in this context and silently ignored| +|`cmd.MarkFlagFilename(flag, glob[])` used to turn on file completion **with glob filtering** (syntax of `[]string{"*.yaml", "*.yml"}` incompatible with bash)|Will continue to work, however, support for bash syntax is added and should be used instead so as to work for all shells (`[]string{"yaml", "yml"}`)| +|`cmd.MarkFlagDirname(flag)` only completes directories (zsh-specific)|Has been added for all shells| +|Completion of a flag name does not repeat, unless flag is of type `*Array` or `*Slice` (not supported by bash)|Retained for `zsh` and added to `fish`| +|Completion of a flag name does not provide the `=` form (unlike bash)|Retained for `zsh` and added to `fish`| + +**Improvements** + +* Custom completion support (`ValidArgsFunction` and `RegisterFlagCompletionFunc()`) +* File completion by default if no other completions found +* Handling of required flags +* File extension filtering no longer mutually exclusive with bash usage +* Completion of directory names *within* another directory +* Support for `=` form of flags diff --git a/vendor/gopkg.in/yaml.v3/LICENSE b/vendor/gopkg.in/yaml.v3/LICENSE new file mode 100644 index 000000000..2683e4bb1 --- /dev/null +++ b/vendor/gopkg.in/yaml.v3/LICENSE @@ -0,0 +1,50 @@ + +This project is covered by two different licenses: MIT and Apache. + +#### MIT License #### + +The following files were ported to Go from C files of libyaml, and thus +are still covered by their original MIT license, with the additional +copyright staring in 2011 when the project was ported over: + + apic.go emitterc.go parserc.go readerc.go scannerc.go + writerc.go yamlh.go yamlprivateh.go + +Copyright (c) 2006-2010 Kirill Simonov +Copyright (c) 2006-2011 Kirill Simonov + +Permission is hereby granted, free of charge, to any person obtaining a copy of +this software and associated documentation files (the "Software"), to deal in +the Software without restriction, including without limitation the rights to +use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies +of the Software, and to permit persons to whom the Software is furnished to do +so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. + +### Apache License ### + +All the remaining project files are covered by the Apache license: + +Copyright (c) 2011-2019 Canonical Ltd + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. diff --git a/vendor/gopkg.in/yaml.v3/NOTICE b/vendor/gopkg.in/yaml.v3/NOTICE new file mode 100644 index 000000000..866d74a7a --- /dev/null +++ b/vendor/gopkg.in/yaml.v3/NOTICE @@ -0,0 +1,13 @@ +Copyright 2011-2016 Canonical Ltd. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. diff --git a/vendor/gopkg.in/yaml.v3/README.md b/vendor/gopkg.in/yaml.v3/README.md new file mode 100644 index 000000000..08eb1babd --- /dev/null +++ b/vendor/gopkg.in/yaml.v3/README.md @@ -0,0 +1,150 @@ +# YAML support for the Go language + +Introduction +------------ + +The yaml package enables Go programs to comfortably encode and decode YAML +values. It was developed within [Canonical](https://www.canonical.com) as +part of the [juju](https://juju.ubuntu.com) project, and is based on a +pure Go port of the well-known [libyaml](http://pyyaml.org/wiki/LibYAML) +C library to parse and generate YAML data quickly and reliably. + +Compatibility +------------- + +The yaml package supports most of YAML 1.2, but preserves some behavior +from 1.1 for backwards compatibility. + +Specifically, as of v3 of the yaml package: + + - YAML 1.1 bools (_yes/no, on/off_) are supported as long as they are being + decoded into a typed bool value. Otherwise they behave as a string. Booleans + in YAML 1.2 are _true/false_ only. + - Octals encode and decode as _0777_ per YAML 1.1, rather than _0o777_ + as specified in YAML 1.2, because most parsers still use the old format. + Octals in the _0o777_ format are supported though, so new files work. + - Does not support base-60 floats. These are gone from YAML 1.2, and were + actually never supported by this package as it's clearly a poor choice. + +and offers backwards +compatibility with YAML 1.1 in some cases. +1.2, including support for +anchors, tags, map merging, etc. Multi-document unmarshalling is not yet +implemented, and base-60 floats from YAML 1.1 are purposefully not +supported since they're a poor design and are gone in YAML 1.2. + +Installation and usage +---------------------- + +The import path for the package is *gopkg.in/yaml.v3*. + +To install it, run: + + go get gopkg.in/yaml.v3 + +API documentation +----------------- + +If opened in a browser, the import path itself leads to the API documentation: + + - [https://gopkg.in/yaml.v3](https://gopkg.in/yaml.v3) + +API stability +------------- + +The package API for yaml v3 will remain stable as described in [gopkg.in](https://gopkg.in). + + +License +------- + +The yaml package is licensed under the MIT and Apache License 2.0 licenses. +Please see the LICENSE file for details. + + +Example +------- + +```Go +package main + +import ( + "fmt" + "log" + + "gopkg.in/yaml.v3" +) + +var data = ` +a: Easy! +b: + c: 2 + d: [3, 4] +` + +// Note: struct fields must be public in order for unmarshal to +// correctly populate the data. +type T struct { + A string + B struct { + RenamedC int `yaml:"c"` + D []int `yaml:",flow"` + } +} + +func main() { + t := T{} + + err := yaml.Unmarshal([]byte(data), &t) + if err != nil { + log.Fatalf("error: %v", err) + } + fmt.Printf("--- t:\n%v\n\n", t) + + d, err := yaml.Marshal(&t) + if err != nil { + log.Fatalf("error: %v", err) + } + fmt.Printf("--- t dump:\n%s\n\n", string(d)) + + m := make(map[interface{}]interface{}) + + err = yaml.Unmarshal([]byte(data), &m) + if err != nil { + log.Fatalf("error: %v", err) + } + fmt.Printf("--- m:\n%v\n\n", m) + + d, err = yaml.Marshal(&m) + if err != nil { + log.Fatalf("error: %v", err) + } + fmt.Printf("--- m dump:\n%s\n\n", string(d)) +} +``` + +This example will generate the following output: + +``` +--- t: +{Easy! {2 [3 4]}} + +--- t dump: +a: Easy! +b: + c: 2 + d: [3, 4] + + +--- m: +map[a:Easy! b:map[c:2 d:[3 4]]] + +--- m dump: +a: Easy! +b: + c: 2 + d: + - 3 + - 4 +``` + diff --git a/vendor/gopkg.in/yaml.v3/apic.go b/vendor/gopkg.in/yaml.v3/apic.go new file mode 100644 index 000000000..ae7d049f1 --- /dev/null +++ b/vendor/gopkg.in/yaml.v3/apic.go @@ -0,0 +1,747 @@ +// +// Copyright (c) 2011-2019 Canonical Ltd +// Copyright (c) 2006-2010 Kirill Simonov +// +// Permission is hereby granted, free of charge, to any person obtaining a copy of +// this software and associated documentation files (the "Software"), to deal in +// the Software without restriction, including without limitation the rights to +// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies +// of the Software, and to permit persons to whom the Software is furnished to do +// so, subject to the following conditions: +// +// The above copyright notice and this permission notice shall be included in all +// copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +// SOFTWARE. + +package yaml + +import ( + "io" +) + +func yaml_insert_token(parser *yaml_parser_t, pos int, token *yaml_token_t) { + //fmt.Println("yaml_insert_token", "pos:", pos, "typ:", token.typ, "head:", parser.tokens_head, "len:", len(parser.tokens)) + + // Check if we can move the queue at the beginning of the buffer. + if parser.tokens_head > 0 && len(parser.tokens) == cap(parser.tokens) { + if parser.tokens_head != len(parser.tokens) { + copy(parser.tokens, parser.tokens[parser.tokens_head:]) + } + parser.tokens = parser.tokens[:len(parser.tokens)-parser.tokens_head] + parser.tokens_head = 0 + } + parser.tokens = append(parser.tokens, *token) + if pos < 0 { + return + } + copy(parser.tokens[parser.tokens_head+pos+1:], parser.tokens[parser.tokens_head+pos:]) + parser.tokens[parser.tokens_head+pos] = *token +} + +// Create a new parser object. +func yaml_parser_initialize(parser *yaml_parser_t) bool { + *parser = yaml_parser_t{ + raw_buffer: make([]byte, 0, input_raw_buffer_size), + buffer: make([]byte, 0, input_buffer_size), + } + return true +} + +// Destroy a parser object. +func yaml_parser_delete(parser *yaml_parser_t) { + *parser = yaml_parser_t{} +} + +// String read handler. +func yaml_string_read_handler(parser *yaml_parser_t, buffer []byte) (n int, err error) { + if parser.input_pos == len(parser.input) { + return 0, io.EOF + } + n = copy(buffer, parser.input[parser.input_pos:]) + parser.input_pos += n + return n, nil +} + +// Reader read handler. +func yaml_reader_read_handler(parser *yaml_parser_t, buffer []byte) (n int, err error) { + return parser.input_reader.Read(buffer) +} + +// Set a string input. +func yaml_parser_set_input_string(parser *yaml_parser_t, input []byte) { + if parser.read_handler != nil { + panic("must set the input source only once") + } + parser.read_handler = yaml_string_read_handler + parser.input = input + parser.input_pos = 0 +} + +// Set a file input. +func yaml_parser_set_input_reader(parser *yaml_parser_t, r io.Reader) { + if parser.read_handler != nil { + panic("must set the input source only once") + } + parser.read_handler = yaml_reader_read_handler + parser.input_reader = r +} + +// Set the source encoding. +func yaml_parser_set_encoding(parser *yaml_parser_t, encoding yaml_encoding_t) { + if parser.encoding != yaml_ANY_ENCODING { + panic("must set the encoding only once") + } + parser.encoding = encoding +} + +// Create a new emitter object. +func yaml_emitter_initialize(emitter *yaml_emitter_t) { + *emitter = yaml_emitter_t{ + buffer: make([]byte, output_buffer_size), + raw_buffer: make([]byte, 0, output_raw_buffer_size), + states: make([]yaml_emitter_state_t, 0, initial_stack_size), + events: make([]yaml_event_t, 0, initial_queue_size), + best_width: -1, + } +} + +// Destroy an emitter object. +func yaml_emitter_delete(emitter *yaml_emitter_t) { + *emitter = yaml_emitter_t{} +} + +// String write handler. +func yaml_string_write_handler(emitter *yaml_emitter_t, buffer []byte) error { + *emitter.output_buffer = append(*emitter.output_buffer, buffer...) + return nil +} + +// yaml_writer_write_handler uses emitter.output_writer to write the +// emitted text. +func yaml_writer_write_handler(emitter *yaml_emitter_t, buffer []byte) error { + _, err := emitter.output_writer.Write(buffer) + return err +} + +// Set a string output. +func yaml_emitter_set_output_string(emitter *yaml_emitter_t, output_buffer *[]byte) { + if emitter.write_handler != nil { + panic("must set the output target only once") + } + emitter.write_handler = yaml_string_write_handler + emitter.output_buffer = output_buffer +} + +// Set a file output. +func yaml_emitter_set_output_writer(emitter *yaml_emitter_t, w io.Writer) { + if emitter.write_handler != nil { + panic("must set the output target only once") + } + emitter.write_handler = yaml_writer_write_handler + emitter.output_writer = w +} + +// Set the output encoding. +func yaml_emitter_set_encoding(emitter *yaml_emitter_t, encoding yaml_encoding_t) { + if emitter.encoding != yaml_ANY_ENCODING { + panic("must set the output encoding only once") + } + emitter.encoding = encoding +} + +// Set the canonical output style. +func yaml_emitter_set_canonical(emitter *yaml_emitter_t, canonical bool) { + emitter.canonical = canonical +} + +// Set the indentation increment. +func yaml_emitter_set_indent(emitter *yaml_emitter_t, indent int) { + if indent < 2 || indent > 9 { + indent = 2 + } + emitter.best_indent = indent +} + +// Set the preferred line width. +func yaml_emitter_set_width(emitter *yaml_emitter_t, width int) { + if width < 0 { + width = -1 + } + emitter.best_width = width +} + +// Set if unescaped non-ASCII characters are allowed. +func yaml_emitter_set_unicode(emitter *yaml_emitter_t, unicode bool) { + emitter.unicode = unicode +} + +// Set the preferred line break character. +func yaml_emitter_set_break(emitter *yaml_emitter_t, line_break yaml_break_t) { + emitter.line_break = line_break +} + +///* +// * Destroy a token object. +// */ +// +//YAML_DECLARE(void) +//yaml_token_delete(yaml_token_t *token) +//{ +// assert(token); // Non-NULL token object expected. +// +// switch (token.type) +// { +// case YAML_TAG_DIRECTIVE_TOKEN: +// yaml_free(token.data.tag_directive.handle); +// yaml_free(token.data.tag_directive.prefix); +// break; +// +// case YAML_ALIAS_TOKEN: +// yaml_free(token.data.alias.value); +// break; +// +// case YAML_ANCHOR_TOKEN: +// yaml_free(token.data.anchor.value); +// break; +// +// case YAML_TAG_TOKEN: +// yaml_free(token.data.tag.handle); +// yaml_free(token.data.tag.suffix); +// break; +// +// case YAML_SCALAR_TOKEN: +// yaml_free(token.data.scalar.value); +// break; +// +// default: +// break; +// } +// +// memset(token, 0, sizeof(yaml_token_t)); +//} +// +///* +// * Check if a string is a valid UTF-8 sequence. +// * +// * Check 'reader.c' for more details on UTF-8 encoding. +// */ +// +//static int +//yaml_check_utf8(yaml_char_t *start, size_t length) +//{ +// yaml_char_t *end = start+length; +// yaml_char_t *pointer = start; +// +// while (pointer < end) { +// unsigned char octet; +// unsigned int width; +// unsigned int value; +// size_t k; +// +// octet = pointer[0]; +// width = (octet & 0x80) == 0x00 ? 1 : +// (octet & 0xE0) == 0xC0 ? 2 : +// (octet & 0xF0) == 0xE0 ? 3 : +// (octet & 0xF8) == 0xF0 ? 4 : 0; +// value = (octet & 0x80) == 0x00 ? octet & 0x7F : +// (octet & 0xE0) == 0xC0 ? octet & 0x1F : +// (octet & 0xF0) == 0xE0 ? octet & 0x0F : +// (octet & 0xF8) == 0xF0 ? octet & 0x07 : 0; +// if (!width) return 0; +// if (pointer+width > end) return 0; +// for (k = 1; k < width; k ++) { +// octet = pointer[k]; +// if ((octet & 0xC0) != 0x80) return 0; +// value = (value << 6) + (octet & 0x3F); +// } +// if (!((width == 1) || +// (width == 2 && value >= 0x80) || +// (width == 3 && value >= 0x800) || +// (width == 4 && value >= 0x10000))) return 0; +// +// pointer += width; +// } +// +// return 1; +//} +// + +// Create STREAM-START. +func yaml_stream_start_event_initialize(event *yaml_event_t, encoding yaml_encoding_t) { + *event = yaml_event_t{ + typ: yaml_STREAM_START_EVENT, + encoding: encoding, + } +} + +// Create STREAM-END. +func yaml_stream_end_event_initialize(event *yaml_event_t) { + *event = yaml_event_t{ + typ: yaml_STREAM_END_EVENT, + } +} + +// Create DOCUMENT-START. +func yaml_document_start_event_initialize( + event *yaml_event_t, + version_directive *yaml_version_directive_t, + tag_directives []yaml_tag_directive_t, + implicit bool, +) { + *event = yaml_event_t{ + typ: yaml_DOCUMENT_START_EVENT, + version_directive: version_directive, + tag_directives: tag_directives, + implicit: implicit, + } +} + +// Create DOCUMENT-END. +func yaml_document_end_event_initialize(event *yaml_event_t, implicit bool) { + *event = yaml_event_t{ + typ: yaml_DOCUMENT_END_EVENT, + implicit: implicit, + } +} + +// Create ALIAS. +func yaml_alias_event_initialize(event *yaml_event_t, anchor []byte) bool { + *event = yaml_event_t{ + typ: yaml_ALIAS_EVENT, + anchor: anchor, + } + return true +} + +// Create SCALAR. +func yaml_scalar_event_initialize(event *yaml_event_t, anchor, tag, value []byte, plain_implicit, quoted_implicit bool, style yaml_scalar_style_t) bool { + *event = yaml_event_t{ + typ: yaml_SCALAR_EVENT, + anchor: anchor, + tag: tag, + value: value, + implicit: plain_implicit, + quoted_implicit: quoted_implicit, + style: yaml_style_t(style), + } + return true +} + +// Create SEQUENCE-START. +func yaml_sequence_start_event_initialize(event *yaml_event_t, anchor, tag []byte, implicit bool, style yaml_sequence_style_t) bool { + *event = yaml_event_t{ + typ: yaml_SEQUENCE_START_EVENT, + anchor: anchor, + tag: tag, + implicit: implicit, + style: yaml_style_t(style), + } + return true +} + +// Create SEQUENCE-END. +func yaml_sequence_end_event_initialize(event *yaml_event_t) bool { + *event = yaml_event_t{ + typ: yaml_SEQUENCE_END_EVENT, + } + return true +} + +// Create MAPPING-START. +func yaml_mapping_start_event_initialize(event *yaml_event_t, anchor, tag []byte, implicit bool, style yaml_mapping_style_t) { + *event = yaml_event_t{ + typ: yaml_MAPPING_START_EVENT, + anchor: anchor, + tag: tag, + implicit: implicit, + style: yaml_style_t(style), + } +} + +// Create MAPPING-END. +func yaml_mapping_end_event_initialize(event *yaml_event_t) { + *event = yaml_event_t{ + typ: yaml_MAPPING_END_EVENT, + } +} + +// Destroy an event object. +func yaml_event_delete(event *yaml_event_t) { + *event = yaml_event_t{} +} + +///* +// * Create a document object. +// */ +// +//YAML_DECLARE(int) +//yaml_document_initialize(document *yaml_document_t, +// version_directive *yaml_version_directive_t, +// tag_directives_start *yaml_tag_directive_t, +// tag_directives_end *yaml_tag_directive_t, +// start_implicit int, end_implicit int) +//{ +// struct { +// error yaml_error_type_t +// } context +// struct { +// start *yaml_node_t +// end *yaml_node_t +// top *yaml_node_t +// } nodes = { NULL, NULL, NULL } +// version_directive_copy *yaml_version_directive_t = NULL +// struct { +// start *yaml_tag_directive_t +// end *yaml_tag_directive_t +// top *yaml_tag_directive_t +// } tag_directives_copy = { NULL, NULL, NULL } +// value yaml_tag_directive_t = { NULL, NULL } +// mark yaml_mark_t = { 0, 0, 0 } +// +// assert(document) // Non-NULL document object is expected. +// assert((tag_directives_start && tag_directives_end) || +// (tag_directives_start == tag_directives_end)) +// // Valid tag directives are expected. +// +// if (!STACK_INIT(&context, nodes, INITIAL_STACK_SIZE)) goto error +// +// if (version_directive) { +// version_directive_copy = yaml_malloc(sizeof(yaml_version_directive_t)) +// if (!version_directive_copy) goto error +// version_directive_copy.major = version_directive.major +// version_directive_copy.minor = version_directive.minor +// } +// +// if (tag_directives_start != tag_directives_end) { +// tag_directive *yaml_tag_directive_t +// if (!STACK_INIT(&context, tag_directives_copy, INITIAL_STACK_SIZE)) +// goto error +// for (tag_directive = tag_directives_start +// tag_directive != tag_directives_end; tag_directive ++) { +// assert(tag_directive.handle) +// assert(tag_directive.prefix) +// if (!yaml_check_utf8(tag_directive.handle, +// strlen((char *)tag_directive.handle))) +// goto error +// if (!yaml_check_utf8(tag_directive.prefix, +// strlen((char *)tag_directive.prefix))) +// goto error +// value.handle = yaml_strdup(tag_directive.handle) +// value.prefix = yaml_strdup(tag_directive.prefix) +// if (!value.handle || !value.prefix) goto error +// if (!PUSH(&context, tag_directives_copy, value)) +// goto error +// value.handle = NULL +// value.prefix = NULL +// } +// } +// +// DOCUMENT_INIT(*document, nodes.start, nodes.end, version_directive_copy, +// tag_directives_copy.start, tag_directives_copy.top, +// start_implicit, end_implicit, mark, mark) +// +// return 1 +// +//error: +// STACK_DEL(&context, nodes) +// yaml_free(version_directive_copy) +// while (!STACK_EMPTY(&context, tag_directives_copy)) { +// value yaml_tag_directive_t = POP(&context, tag_directives_copy) +// yaml_free(value.handle) +// yaml_free(value.prefix) +// } +// STACK_DEL(&context, tag_directives_copy) +// yaml_free(value.handle) +// yaml_free(value.prefix) +// +// return 0 +//} +// +///* +// * Destroy a document object. +// */ +// +//YAML_DECLARE(void) +//yaml_document_delete(document *yaml_document_t) +//{ +// struct { +// error yaml_error_type_t +// } context +// tag_directive *yaml_tag_directive_t +// +// context.error = YAML_NO_ERROR // Eliminate a compiler warning. +// +// assert(document) // Non-NULL document object is expected. +// +// while (!STACK_EMPTY(&context, document.nodes)) { +// node yaml_node_t = POP(&context, document.nodes) +// yaml_free(node.tag) +// switch (node.type) { +// case YAML_SCALAR_NODE: +// yaml_free(node.data.scalar.value) +// break +// case YAML_SEQUENCE_NODE: +// STACK_DEL(&context, node.data.sequence.items) +// break +// case YAML_MAPPING_NODE: +// STACK_DEL(&context, node.data.mapping.pairs) +// break +// default: +// assert(0) // Should not happen. +// } +// } +// STACK_DEL(&context, document.nodes) +// +// yaml_free(document.version_directive) +// for (tag_directive = document.tag_directives.start +// tag_directive != document.tag_directives.end +// tag_directive++) { +// yaml_free(tag_directive.handle) +// yaml_free(tag_directive.prefix) +// } +// yaml_free(document.tag_directives.start) +// +// memset(document, 0, sizeof(yaml_document_t)) +//} +// +///** +// * Get a document node. +// */ +// +//YAML_DECLARE(yaml_node_t *) +//yaml_document_get_node(document *yaml_document_t, index int) +//{ +// assert(document) // Non-NULL document object is expected. +// +// if (index > 0 && document.nodes.start + index <= document.nodes.top) { +// return document.nodes.start + index - 1 +// } +// return NULL +//} +// +///** +// * Get the root object. +// */ +// +//YAML_DECLARE(yaml_node_t *) +//yaml_document_get_root_node(document *yaml_document_t) +//{ +// assert(document) // Non-NULL document object is expected. +// +// if (document.nodes.top != document.nodes.start) { +// return document.nodes.start +// } +// return NULL +//} +// +///* +// * Add a scalar node to a document. +// */ +// +//YAML_DECLARE(int) +//yaml_document_add_scalar(document *yaml_document_t, +// tag *yaml_char_t, value *yaml_char_t, length int, +// style yaml_scalar_style_t) +//{ +// struct { +// error yaml_error_type_t +// } context +// mark yaml_mark_t = { 0, 0, 0 } +// tag_copy *yaml_char_t = NULL +// value_copy *yaml_char_t = NULL +// node yaml_node_t +// +// assert(document) // Non-NULL document object is expected. +// assert(value) // Non-NULL value is expected. +// +// if (!tag) { +// tag = (yaml_char_t *)YAML_DEFAULT_SCALAR_TAG +// } +// +// if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error +// tag_copy = yaml_strdup(tag) +// if (!tag_copy) goto error +// +// if (length < 0) { +// length = strlen((char *)value) +// } +// +// if (!yaml_check_utf8(value, length)) goto error +// value_copy = yaml_malloc(length+1) +// if (!value_copy) goto error +// memcpy(value_copy, value, length) +// value_copy[length] = '\0' +// +// SCALAR_NODE_INIT(node, tag_copy, value_copy, length, style, mark, mark) +// if (!PUSH(&context, document.nodes, node)) goto error +// +// return document.nodes.top - document.nodes.start +// +//error: +// yaml_free(tag_copy) +// yaml_free(value_copy) +// +// return 0 +//} +// +///* +// * Add a sequence node to a document. +// */ +// +//YAML_DECLARE(int) +//yaml_document_add_sequence(document *yaml_document_t, +// tag *yaml_char_t, style yaml_sequence_style_t) +//{ +// struct { +// error yaml_error_type_t +// } context +// mark yaml_mark_t = { 0, 0, 0 } +// tag_copy *yaml_char_t = NULL +// struct { +// start *yaml_node_item_t +// end *yaml_node_item_t +// top *yaml_node_item_t +// } items = { NULL, NULL, NULL } +// node yaml_node_t +// +// assert(document) // Non-NULL document object is expected. +// +// if (!tag) { +// tag = (yaml_char_t *)YAML_DEFAULT_SEQUENCE_TAG +// } +// +// if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error +// tag_copy = yaml_strdup(tag) +// if (!tag_copy) goto error +// +// if (!STACK_INIT(&context, items, INITIAL_STACK_SIZE)) goto error +// +// SEQUENCE_NODE_INIT(node, tag_copy, items.start, items.end, +// style, mark, mark) +// if (!PUSH(&context, document.nodes, node)) goto error +// +// return document.nodes.top - document.nodes.start +// +//error: +// STACK_DEL(&context, items) +// yaml_free(tag_copy) +// +// return 0 +//} +// +///* +// * Add a mapping node to a document. +// */ +// +//YAML_DECLARE(int) +//yaml_document_add_mapping(document *yaml_document_t, +// tag *yaml_char_t, style yaml_mapping_style_t) +//{ +// struct { +// error yaml_error_type_t +// } context +// mark yaml_mark_t = { 0, 0, 0 } +// tag_copy *yaml_char_t = NULL +// struct { +// start *yaml_node_pair_t +// end *yaml_node_pair_t +// top *yaml_node_pair_t +// } pairs = { NULL, NULL, NULL } +// node yaml_node_t +// +// assert(document) // Non-NULL document object is expected. +// +// if (!tag) { +// tag = (yaml_char_t *)YAML_DEFAULT_MAPPING_TAG +// } +// +// if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error +// tag_copy = yaml_strdup(tag) +// if (!tag_copy) goto error +// +// if (!STACK_INIT(&context, pairs, INITIAL_STACK_SIZE)) goto error +// +// MAPPING_NODE_INIT(node, tag_copy, pairs.start, pairs.end, +// style, mark, mark) +// if (!PUSH(&context, document.nodes, node)) goto error +// +// return document.nodes.top - document.nodes.start +// +//error: +// STACK_DEL(&context, pairs) +// yaml_free(tag_copy) +// +// return 0 +//} +// +///* +// * Append an item to a sequence node. +// */ +// +//YAML_DECLARE(int) +//yaml_document_append_sequence_item(document *yaml_document_t, +// sequence int, item int) +//{ +// struct { +// error yaml_error_type_t +// } context +// +// assert(document) // Non-NULL document is required. +// assert(sequence > 0 +// && document.nodes.start + sequence <= document.nodes.top) +// // Valid sequence id is required. +// assert(document.nodes.start[sequence-1].type == YAML_SEQUENCE_NODE) +// // A sequence node is required. +// assert(item > 0 && document.nodes.start + item <= document.nodes.top) +// // Valid item id is required. +// +// if (!PUSH(&context, +// document.nodes.start[sequence-1].data.sequence.items, item)) +// return 0 +// +// return 1 +//} +// +///* +// * Append a pair of a key and a value to a mapping node. +// */ +// +//YAML_DECLARE(int) +//yaml_document_append_mapping_pair(document *yaml_document_t, +// mapping int, key int, value int) +//{ +// struct { +// error yaml_error_type_t +// } context +// +// pair yaml_node_pair_t +// +// assert(document) // Non-NULL document is required. +// assert(mapping > 0 +// && document.nodes.start + mapping <= document.nodes.top) +// // Valid mapping id is required. +// assert(document.nodes.start[mapping-1].type == YAML_MAPPING_NODE) +// // A mapping node is required. +// assert(key > 0 && document.nodes.start + key <= document.nodes.top) +// // Valid key id is required. +// assert(value > 0 && document.nodes.start + value <= document.nodes.top) +// // Valid value id is required. +// +// pair.key = key +// pair.value = value +// +// if (!PUSH(&context, +// document.nodes.start[mapping-1].data.mapping.pairs, pair)) +// return 0 +// +// return 1 +//} +// +// diff --git a/vendor/gopkg.in/yaml.v3/decode.go b/vendor/gopkg.in/yaml.v3/decode.go new file mode 100644 index 000000000..0173b6982 --- /dev/null +++ b/vendor/gopkg.in/yaml.v3/decode.go @@ -0,0 +1,1000 @@ +// +// Copyright (c) 2011-2019 Canonical Ltd +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package yaml + +import ( + "encoding" + "encoding/base64" + "fmt" + "io" + "math" + "reflect" + "strconv" + "time" +) + +// ---------------------------------------------------------------------------- +// Parser, produces a node tree out of a libyaml event stream. + +type parser struct { + parser yaml_parser_t + event yaml_event_t + doc *Node + anchors map[string]*Node + doneInit bool + textless bool +} + +func newParser(b []byte) *parser { + p := parser{} + if !yaml_parser_initialize(&p.parser) { + panic("failed to initialize YAML emitter") + } + if len(b) == 0 { + b = []byte{'\n'} + } + yaml_parser_set_input_string(&p.parser, b) + return &p +} + +func newParserFromReader(r io.Reader) *parser { + p := parser{} + if !yaml_parser_initialize(&p.parser) { + panic("failed to initialize YAML emitter") + } + yaml_parser_set_input_reader(&p.parser, r) + return &p +} + +func (p *parser) init() { + if p.doneInit { + return + } + p.anchors = make(map[string]*Node) + p.expect(yaml_STREAM_START_EVENT) + p.doneInit = true +} + +func (p *parser) destroy() { + if p.event.typ != yaml_NO_EVENT { + yaml_event_delete(&p.event) + } + yaml_parser_delete(&p.parser) +} + +// expect consumes an event from the event stream and +// checks that it's of the expected type. +func (p *parser) expect(e yaml_event_type_t) { + if p.event.typ == yaml_NO_EVENT { + if !yaml_parser_parse(&p.parser, &p.event) { + p.fail() + } + } + if p.event.typ == yaml_STREAM_END_EVENT { + failf("attempted to go past the end of stream; corrupted value?") + } + if p.event.typ != e { + p.parser.problem = fmt.Sprintf("expected %s event but got %s", e, p.event.typ) + p.fail() + } + yaml_event_delete(&p.event) + p.event.typ = yaml_NO_EVENT +} + +// peek peeks at the next event in the event stream, +// puts the results into p.event and returns the event type. +func (p *parser) peek() yaml_event_type_t { + if p.event.typ != yaml_NO_EVENT { + return p.event.typ + } + // It's curious choice from the underlying API to generally return a + // positive result on success, but on this case return true in an error + // scenario. This was the source of bugs in the past (issue #666). + if !yaml_parser_parse(&p.parser, &p.event) || p.parser.error != yaml_NO_ERROR { + p.fail() + } + return p.event.typ +} + +func (p *parser) fail() { + var where string + var line int + if p.parser.context_mark.line != 0 { + line = p.parser.context_mark.line + // Scanner errors don't iterate line before returning error + if p.parser.error == yaml_SCANNER_ERROR { + line++ + } + } else if p.parser.problem_mark.line != 0 { + line = p.parser.problem_mark.line + // Scanner errors don't iterate line before returning error + if p.parser.error == yaml_SCANNER_ERROR { + line++ + } + } + if line != 0 { + where = "line " + strconv.Itoa(line) + ": " + } + var msg string + if len(p.parser.problem) > 0 { + msg = p.parser.problem + } else { + msg = "unknown problem parsing YAML content" + } + failf("%s%s", where, msg) +} + +func (p *parser) anchor(n *Node, anchor []byte) { + if anchor != nil { + n.Anchor = string(anchor) + p.anchors[n.Anchor] = n + } +} + +func (p *parser) parse() *Node { + p.init() + switch p.peek() { + case yaml_SCALAR_EVENT: + return p.scalar() + case yaml_ALIAS_EVENT: + return p.alias() + case yaml_MAPPING_START_EVENT: + return p.mapping() + case yaml_SEQUENCE_START_EVENT: + return p.sequence() + case yaml_DOCUMENT_START_EVENT: + return p.document() + case yaml_STREAM_END_EVENT: + // Happens when attempting to decode an empty buffer. + return nil + case yaml_TAIL_COMMENT_EVENT: + panic("internal error: unexpected tail comment event (please report)") + default: + panic("internal error: attempted to parse unknown event (please report): " + p.event.typ.String()) + } +} + +func (p *parser) node(kind Kind, defaultTag, tag, value string) *Node { + var style Style + if tag != "" && tag != "!" { + tag = shortTag(tag) + style = TaggedStyle + } else if defaultTag != "" { + tag = defaultTag + } else if kind == ScalarNode { + tag, _ = resolve("", value) + } + n := &Node{ + Kind: kind, + Tag: tag, + Value: value, + Style: style, + } + if !p.textless { + n.Line = p.event.start_mark.line + 1 + n.Column = p.event.start_mark.column + 1 + n.HeadComment = string(p.event.head_comment) + n.LineComment = string(p.event.line_comment) + n.FootComment = string(p.event.foot_comment) + } + return n +} + +func (p *parser) parseChild(parent *Node) *Node { + child := p.parse() + parent.Content = append(parent.Content, child) + return child +} + +func (p *parser) document() *Node { + n := p.node(DocumentNode, "", "", "") + p.doc = n + p.expect(yaml_DOCUMENT_START_EVENT) + p.parseChild(n) + if p.peek() == yaml_DOCUMENT_END_EVENT { + n.FootComment = string(p.event.foot_comment) + } + p.expect(yaml_DOCUMENT_END_EVENT) + return n +} + +func (p *parser) alias() *Node { + n := p.node(AliasNode, "", "", string(p.event.anchor)) + n.Alias = p.anchors[n.Value] + if n.Alias == nil { + failf("unknown anchor '%s' referenced", n.Value) + } + p.expect(yaml_ALIAS_EVENT) + return n +} + +func (p *parser) scalar() *Node { + var parsedStyle = p.event.scalar_style() + var nodeStyle Style + switch { + case parsedStyle&yaml_DOUBLE_QUOTED_SCALAR_STYLE != 0: + nodeStyle = DoubleQuotedStyle + case parsedStyle&yaml_SINGLE_QUOTED_SCALAR_STYLE != 0: + nodeStyle = SingleQuotedStyle + case parsedStyle&yaml_LITERAL_SCALAR_STYLE != 0: + nodeStyle = LiteralStyle + case parsedStyle&yaml_FOLDED_SCALAR_STYLE != 0: + nodeStyle = FoldedStyle + } + var nodeValue = string(p.event.value) + var nodeTag = string(p.event.tag) + var defaultTag string + if nodeStyle == 0 { + if nodeValue == "<<" { + defaultTag = mergeTag + } + } else { + defaultTag = strTag + } + n := p.node(ScalarNode, defaultTag, nodeTag, nodeValue) + n.Style |= nodeStyle + p.anchor(n, p.event.anchor) + p.expect(yaml_SCALAR_EVENT) + return n +} + +func (p *parser) sequence() *Node { + n := p.node(SequenceNode, seqTag, string(p.event.tag), "") + if p.event.sequence_style()&yaml_FLOW_SEQUENCE_STYLE != 0 { + n.Style |= FlowStyle + } + p.anchor(n, p.event.anchor) + p.expect(yaml_SEQUENCE_START_EVENT) + for p.peek() != yaml_SEQUENCE_END_EVENT { + p.parseChild(n) + } + n.LineComment = string(p.event.line_comment) + n.FootComment = string(p.event.foot_comment) + p.expect(yaml_SEQUENCE_END_EVENT) + return n +} + +func (p *parser) mapping() *Node { + n := p.node(MappingNode, mapTag, string(p.event.tag), "") + block := true + if p.event.mapping_style()&yaml_FLOW_MAPPING_STYLE != 0 { + block = false + n.Style |= FlowStyle + } + p.anchor(n, p.event.anchor) + p.expect(yaml_MAPPING_START_EVENT) + for p.peek() != yaml_MAPPING_END_EVENT { + k := p.parseChild(n) + if block && k.FootComment != "" { + // Must be a foot comment for the prior value when being dedented. + if len(n.Content) > 2 { + n.Content[len(n.Content)-3].FootComment = k.FootComment + k.FootComment = "" + } + } + v := p.parseChild(n) + if k.FootComment == "" && v.FootComment != "" { + k.FootComment = v.FootComment + v.FootComment = "" + } + if p.peek() == yaml_TAIL_COMMENT_EVENT { + if k.FootComment == "" { + k.FootComment = string(p.event.foot_comment) + } + p.expect(yaml_TAIL_COMMENT_EVENT) + } + } + n.LineComment = string(p.event.line_comment) + n.FootComment = string(p.event.foot_comment) + if n.Style&FlowStyle == 0 && n.FootComment != "" && len(n.Content) > 1 { + n.Content[len(n.Content)-2].FootComment = n.FootComment + n.FootComment = "" + } + p.expect(yaml_MAPPING_END_EVENT) + return n +} + +// ---------------------------------------------------------------------------- +// Decoder, unmarshals a node into a provided value. + +type decoder struct { + doc *Node + aliases map[*Node]bool + terrors []string + + stringMapType reflect.Type + generalMapType reflect.Type + + knownFields bool + uniqueKeys bool + decodeCount int + aliasCount int + aliasDepth int + + mergedFields map[interface{}]bool +} + +var ( + nodeType = reflect.TypeOf(Node{}) + durationType = reflect.TypeOf(time.Duration(0)) + stringMapType = reflect.TypeOf(map[string]interface{}{}) + generalMapType = reflect.TypeOf(map[interface{}]interface{}{}) + ifaceType = generalMapType.Elem() + timeType = reflect.TypeOf(time.Time{}) + ptrTimeType = reflect.TypeOf(&time.Time{}) +) + +func newDecoder() *decoder { + d := &decoder{ + stringMapType: stringMapType, + generalMapType: generalMapType, + uniqueKeys: true, + } + d.aliases = make(map[*Node]bool) + return d +} + +func (d *decoder) terror(n *Node, tag string, out reflect.Value) { + if n.Tag != "" { + tag = n.Tag + } + value := n.Value + if tag != seqTag && tag != mapTag { + if len(value) > 10 { + value = " `" + value[:7] + "...`" + } else { + value = " `" + value + "`" + } + } + d.terrors = append(d.terrors, fmt.Sprintf("line %d: cannot unmarshal %s%s into %s", n.Line, shortTag(tag), value, out.Type())) +} + +func (d *decoder) callUnmarshaler(n *Node, u Unmarshaler) (good bool) { + err := u.UnmarshalYAML(n) + if e, ok := err.(*TypeError); ok { + d.terrors = append(d.terrors, e.Errors...) + return false + } + if err != nil { + fail(err) + } + return true +} + +func (d *decoder) callObsoleteUnmarshaler(n *Node, u obsoleteUnmarshaler) (good bool) { + terrlen := len(d.terrors) + err := u.UnmarshalYAML(func(v interface{}) (err error) { + defer handleErr(&err) + d.unmarshal(n, reflect.ValueOf(v)) + if len(d.terrors) > terrlen { + issues := d.terrors[terrlen:] + d.terrors = d.terrors[:terrlen] + return &TypeError{issues} + } + return nil + }) + if e, ok := err.(*TypeError); ok { + d.terrors = append(d.terrors, e.Errors...) + return false + } + if err != nil { + fail(err) + } + return true +} + +// d.prepare initializes and dereferences pointers and calls UnmarshalYAML +// if a value is found to implement it. +// It returns the initialized and dereferenced out value, whether +// unmarshalling was already done by UnmarshalYAML, and if so whether +// its types unmarshalled appropriately. +// +// If n holds a null value, prepare returns before doing anything. +func (d *decoder) prepare(n *Node, out reflect.Value) (newout reflect.Value, unmarshaled, good bool) { + if n.ShortTag() == nullTag { + return out, false, false + } + again := true + for again { + again = false + if out.Kind() == reflect.Ptr { + if out.IsNil() { + out.Set(reflect.New(out.Type().Elem())) + } + out = out.Elem() + again = true + } + if out.CanAddr() { + outi := out.Addr().Interface() + if u, ok := outi.(Unmarshaler); ok { + good = d.callUnmarshaler(n, u) + return out, true, good + } + if u, ok := outi.(obsoleteUnmarshaler); ok { + good = d.callObsoleteUnmarshaler(n, u) + return out, true, good + } + } + } + return out, false, false +} + +func (d *decoder) fieldByIndex(n *Node, v reflect.Value, index []int) (field reflect.Value) { + if n.ShortTag() == nullTag { + return reflect.Value{} + } + for _, num := range index { + for { + if v.Kind() == reflect.Ptr { + if v.IsNil() { + v.Set(reflect.New(v.Type().Elem())) + } + v = v.Elem() + continue + } + break + } + v = v.Field(num) + } + return v +} + +const ( + // 400,000 decode operations is ~500kb of dense object declarations, or + // ~5kb of dense object declarations with 10000% alias expansion + alias_ratio_range_low = 400000 + + // 4,000,000 decode operations is ~5MB of dense object declarations, or + // ~4.5MB of dense object declarations with 10% alias expansion + alias_ratio_range_high = 4000000 + + // alias_ratio_range is the range over which we scale allowed alias ratios + alias_ratio_range = float64(alias_ratio_range_high - alias_ratio_range_low) +) + +func allowedAliasRatio(decodeCount int) float64 { + switch { + case decodeCount <= alias_ratio_range_low: + // allow 99% to come from alias expansion for small-to-medium documents + return 0.99 + case decodeCount >= alias_ratio_range_high: + // allow 10% to come from alias expansion for very large documents + return 0.10 + default: + // scale smoothly from 99% down to 10% over the range. + // this maps to 396,000 - 400,000 allowed alias-driven decodes over the range. + // 400,000 decode operations is ~100MB of allocations in worst-case scenarios (single-item maps). + return 0.99 - 0.89*(float64(decodeCount-alias_ratio_range_low)/alias_ratio_range) + } +} + +func (d *decoder) unmarshal(n *Node, out reflect.Value) (good bool) { + d.decodeCount++ + if d.aliasDepth > 0 { + d.aliasCount++ + } + if d.aliasCount > 100 && d.decodeCount > 1000 && float64(d.aliasCount)/float64(d.decodeCount) > allowedAliasRatio(d.decodeCount) { + failf("document contains excessive aliasing") + } + if out.Type() == nodeType { + out.Set(reflect.ValueOf(n).Elem()) + return true + } + switch n.Kind { + case DocumentNode: + return d.document(n, out) + case AliasNode: + return d.alias(n, out) + } + out, unmarshaled, good := d.prepare(n, out) + if unmarshaled { + return good + } + switch n.Kind { + case ScalarNode: + good = d.scalar(n, out) + case MappingNode: + good = d.mapping(n, out) + case SequenceNode: + good = d.sequence(n, out) + case 0: + if n.IsZero() { + return d.null(out) + } + fallthrough + default: + failf("cannot decode node with unknown kind %d", n.Kind) + } + return good +} + +func (d *decoder) document(n *Node, out reflect.Value) (good bool) { + if len(n.Content) == 1 { + d.doc = n + d.unmarshal(n.Content[0], out) + return true + } + return false +} + +func (d *decoder) alias(n *Node, out reflect.Value) (good bool) { + if d.aliases[n] { + // TODO this could actually be allowed in some circumstances. + failf("anchor '%s' value contains itself", n.Value) + } + d.aliases[n] = true + d.aliasDepth++ + good = d.unmarshal(n.Alias, out) + d.aliasDepth-- + delete(d.aliases, n) + return good +} + +var zeroValue reflect.Value + +func resetMap(out reflect.Value) { + for _, k := range out.MapKeys() { + out.SetMapIndex(k, zeroValue) + } +} + +func (d *decoder) null(out reflect.Value) bool { + if out.CanAddr() { + switch out.Kind() { + case reflect.Interface, reflect.Ptr, reflect.Map, reflect.Slice: + out.Set(reflect.Zero(out.Type())) + return true + } + } + return false +} + +func (d *decoder) scalar(n *Node, out reflect.Value) bool { + var tag string + var resolved interface{} + if n.indicatedString() { + tag = strTag + resolved = n.Value + } else { + tag, resolved = resolve(n.Tag, n.Value) + if tag == binaryTag { + data, err := base64.StdEncoding.DecodeString(resolved.(string)) + if err != nil { + failf("!!binary value contains invalid base64 data") + } + resolved = string(data) + } + } + if resolved == nil { + return d.null(out) + } + if resolvedv := reflect.ValueOf(resolved); out.Type() == resolvedv.Type() { + // We've resolved to exactly the type we want, so use that. + out.Set(resolvedv) + return true + } + // Perhaps we can use the value as a TextUnmarshaler to + // set its value. + if out.CanAddr() { + u, ok := out.Addr().Interface().(encoding.TextUnmarshaler) + if ok { + var text []byte + if tag == binaryTag { + text = []byte(resolved.(string)) + } else { + // We let any value be unmarshaled into TextUnmarshaler. + // That might be more lax than we'd like, but the + // TextUnmarshaler itself should bowl out any dubious values. + text = []byte(n.Value) + } + err := u.UnmarshalText(text) + if err != nil { + fail(err) + } + return true + } + } + switch out.Kind() { + case reflect.String: + if tag == binaryTag { + out.SetString(resolved.(string)) + return true + } + out.SetString(n.Value) + return true + case reflect.Interface: + out.Set(reflect.ValueOf(resolved)) + return true + case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64: + // This used to work in v2, but it's very unfriendly. + isDuration := out.Type() == durationType + + switch resolved := resolved.(type) { + case int: + if !isDuration && !out.OverflowInt(int64(resolved)) { + out.SetInt(int64(resolved)) + return true + } + case int64: + if !isDuration && !out.OverflowInt(resolved) { + out.SetInt(resolved) + return true + } + case uint64: + if !isDuration && resolved <= math.MaxInt64 && !out.OverflowInt(int64(resolved)) { + out.SetInt(int64(resolved)) + return true + } + case float64: + if !isDuration && resolved <= math.MaxInt64 && !out.OverflowInt(int64(resolved)) { + out.SetInt(int64(resolved)) + return true + } + case string: + if out.Type() == durationType { + d, err := time.ParseDuration(resolved) + if err == nil { + out.SetInt(int64(d)) + return true + } + } + } + case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr: + switch resolved := resolved.(type) { + case int: + if resolved >= 0 && !out.OverflowUint(uint64(resolved)) { + out.SetUint(uint64(resolved)) + return true + } + case int64: + if resolved >= 0 && !out.OverflowUint(uint64(resolved)) { + out.SetUint(uint64(resolved)) + return true + } + case uint64: + if !out.OverflowUint(uint64(resolved)) { + out.SetUint(uint64(resolved)) + return true + } + case float64: + if resolved <= math.MaxUint64 && !out.OverflowUint(uint64(resolved)) { + out.SetUint(uint64(resolved)) + return true + } + } + case reflect.Bool: + switch resolved := resolved.(type) { + case bool: + out.SetBool(resolved) + return true + case string: + // This offers some compatibility with the 1.1 spec (https://yaml.org/type/bool.html). + // It only works if explicitly attempting to unmarshal into a typed bool value. + switch resolved { + case "y", "Y", "yes", "Yes", "YES", "on", "On", "ON": + out.SetBool(true) + return true + case "n", "N", "no", "No", "NO", "off", "Off", "OFF": + out.SetBool(false) + return true + } + } + case reflect.Float32, reflect.Float64: + switch resolved := resolved.(type) { + case int: + out.SetFloat(float64(resolved)) + return true + case int64: + out.SetFloat(float64(resolved)) + return true + case uint64: + out.SetFloat(float64(resolved)) + return true + case float64: + out.SetFloat(resolved) + return true + } + case reflect.Struct: + if resolvedv := reflect.ValueOf(resolved); out.Type() == resolvedv.Type() { + out.Set(resolvedv) + return true + } + case reflect.Ptr: + panic("yaml internal error: please report the issue") + } + d.terror(n, tag, out) + return false +} + +func settableValueOf(i interface{}) reflect.Value { + v := reflect.ValueOf(i) + sv := reflect.New(v.Type()).Elem() + sv.Set(v) + return sv +} + +func (d *decoder) sequence(n *Node, out reflect.Value) (good bool) { + l := len(n.Content) + + var iface reflect.Value + switch out.Kind() { + case reflect.Slice: + out.Set(reflect.MakeSlice(out.Type(), l, l)) + case reflect.Array: + if l != out.Len() { + failf("invalid array: want %d elements but got %d", out.Len(), l) + } + case reflect.Interface: + // No type hints. Will have to use a generic sequence. + iface = out + out = settableValueOf(make([]interface{}, l)) + default: + d.terror(n, seqTag, out) + return false + } + et := out.Type().Elem() + + j := 0 + for i := 0; i < l; i++ { + e := reflect.New(et).Elem() + if ok := d.unmarshal(n.Content[i], e); ok { + out.Index(j).Set(e) + j++ + } + } + if out.Kind() != reflect.Array { + out.Set(out.Slice(0, j)) + } + if iface.IsValid() { + iface.Set(out) + } + return true +} + +func (d *decoder) mapping(n *Node, out reflect.Value) (good bool) { + l := len(n.Content) + if d.uniqueKeys { + nerrs := len(d.terrors) + for i := 0; i < l; i += 2 { + ni := n.Content[i] + for j := i + 2; j < l; j += 2 { + nj := n.Content[j] + if ni.Kind == nj.Kind && ni.Value == nj.Value { + d.terrors = append(d.terrors, fmt.Sprintf("line %d: mapping key %#v already defined at line %d", nj.Line, nj.Value, ni.Line)) + } + } + } + if len(d.terrors) > nerrs { + return false + } + } + switch out.Kind() { + case reflect.Struct: + return d.mappingStruct(n, out) + case reflect.Map: + // okay + case reflect.Interface: + iface := out + if isStringMap(n) { + out = reflect.MakeMap(d.stringMapType) + } else { + out = reflect.MakeMap(d.generalMapType) + } + iface.Set(out) + default: + d.terror(n, mapTag, out) + return false + } + + outt := out.Type() + kt := outt.Key() + et := outt.Elem() + + stringMapType := d.stringMapType + generalMapType := d.generalMapType + if outt.Elem() == ifaceType { + if outt.Key().Kind() == reflect.String { + d.stringMapType = outt + } else if outt.Key() == ifaceType { + d.generalMapType = outt + } + } + + mergedFields := d.mergedFields + d.mergedFields = nil + + var mergeNode *Node + + mapIsNew := false + if out.IsNil() { + out.Set(reflect.MakeMap(outt)) + mapIsNew = true + } + for i := 0; i < l; i += 2 { + if isMerge(n.Content[i]) { + mergeNode = n.Content[i+1] + continue + } + k := reflect.New(kt).Elem() + if d.unmarshal(n.Content[i], k) { + if mergedFields != nil { + ki := k.Interface() + if mergedFields[ki] { + continue + } + mergedFields[ki] = true + } + kkind := k.Kind() + if kkind == reflect.Interface { + kkind = k.Elem().Kind() + } + if kkind == reflect.Map || kkind == reflect.Slice { + failf("invalid map key: %#v", k.Interface()) + } + e := reflect.New(et).Elem() + if d.unmarshal(n.Content[i+1], e) || n.Content[i+1].ShortTag() == nullTag && (mapIsNew || !out.MapIndex(k).IsValid()) { + out.SetMapIndex(k, e) + } + } + } + + d.mergedFields = mergedFields + if mergeNode != nil { + d.merge(n, mergeNode, out) + } + + d.stringMapType = stringMapType + d.generalMapType = generalMapType + return true +} + +func isStringMap(n *Node) bool { + if n.Kind != MappingNode { + return false + } + l := len(n.Content) + for i := 0; i < l; i += 2 { + shortTag := n.Content[i].ShortTag() + if shortTag != strTag && shortTag != mergeTag { + return false + } + } + return true +} + +func (d *decoder) mappingStruct(n *Node, out reflect.Value) (good bool) { + sinfo, err := getStructInfo(out.Type()) + if err != nil { + panic(err) + } + + var inlineMap reflect.Value + var elemType reflect.Type + if sinfo.InlineMap != -1 { + inlineMap = out.Field(sinfo.InlineMap) + elemType = inlineMap.Type().Elem() + } + + for _, index := range sinfo.InlineUnmarshalers { + field := d.fieldByIndex(n, out, index) + d.prepare(n, field) + } + + mergedFields := d.mergedFields + d.mergedFields = nil + var mergeNode *Node + var doneFields []bool + if d.uniqueKeys { + doneFields = make([]bool, len(sinfo.FieldsList)) + } + name := settableValueOf("") + l := len(n.Content) + for i := 0; i < l; i += 2 { + ni := n.Content[i] + if isMerge(ni) { + mergeNode = n.Content[i+1] + continue + } + if !d.unmarshal(ni, name) { + continue + } + sname := name.String() + if mergedFields != nil { + if mergedFields[sname] { + continue + } + mergedFields[sname] = true + } + if info, ok := sinfo.FieldsMap[sname]; ok { + if d.uniqueKeys { + if doneFields[info.Id] { + d.terrors = append(d.terrors, fmt.Sprintf("line %d: field %s already set in type %s", ni.Line, name.String(), out.Type())) + continue + } + doneFields[info.Id] = true + } + var field reflect.Value + if info.Inline == nil { + field = out.Field(info.Num) + } else { + field = d.fieldByIndex(n, out, info.Inline) + } + d.unmarshal(n.Content[i+1], field) + } else if sinfo.InlineMap != -1 { + if inlineMap.IsNil() { + inlineMap.Set(reflect.MakeMap(inlineMap.Type())) + } + value := reflect.New(elemType).Elem() + d.unmarshal(n.Content[i+1], value) + inlineMap.SetMapIndex(name, value) + } else if d.knownFields { + d.terrors = append(d.terrors, fmt.Sprintf("line %d: field %s not found in type %s", ni.Line, name.String(), out.Type())) + } + } + + d.mergedFields = mergedFields + if mergeNode != nil { + d.merge(n, mergeNode, out) + } + return true +} + +func failWantMap() { + failf("map merge requires map or sequence of maps as the value") +} + +func (d *decoder) merge(parent *Node, merge *Node, out reflect.Value) { + mergedFields := d.mergedFields + if mergedFields == nil { + d.mergedFields = make(map[interface{}]bool) + for i := 0; i < len(parent.Content); i += 2 { + k := reflect.New(ifaceType).Elem() + if d.unmarshal(parent.Content[i], k) { + d.mergedFields[k.Interface()] = true + } + } + } + + switch merge.Kind { + case MappingNode: + d.unmarshal(merge, out) + case AliasNode: + if merge.Alias != nil && merge.Alias.Kind != MappingNode { + failWantMap() + } + d.unmarshal(merge, out) + case SequenceNode: + for i := 0; i < len(merge.Content); i++ { + ni := merge.Content[i] + if ni.Kind == AliasNode { + if ni.Alias != nil && ni.Alias.Kind != MappingNode { + failWantMap() + } + } else if ni.Kind != MappingNode { + failWantMap() + } + d.unmarshal(ni, out) + } + default: + failWantMap() + } + + d.mergedFields = mergedFields +} + +func isMerge(n *Node) bool { + return n.Kind == ScalarNode && n.Value == "<<" && (n.Tag == "" || n.Tag == "!" || shortTag(n.Tag) == mergeTag) +} diff --git a/vendor/gopkg.in/yaml.v3/emitterc.go b/vendor/gopkg.in/yaml.v3/emitterc.go new file mode 100644 index 000000000..0f47c9ca8 --- /dev/null +++ b/vendor/gopkg.in/yaml.v3/emitterc.go @@ -0,0 +1,2020 @@ +// +// Copyright (c) 2011-2019 Canonical Ltd +// Copyright (c) 2006-2010 Kirill Simonov +// +// Permission is hereby granted, free of charge, to any person obtaining a copy of +// this software and associated documentation files (the "Software"), to deal in +// the Software without restriction, including without limitation the rights to +// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies +// of the Software, and to permit persons to whom the Software is furnished to do +// so, subject to the following conditions: +// +// The above copyright notice and this permission notice shall be included in all +// copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +// SOFTWARE. + +package yaml + +import ( + "bytes" + "fmt" +) + +// Flush the buffer if needed. +func flush(emitter *yaml_emitter_t) bool { + if emitter.buffer_pos+5 >= len(emitter.buffer) { + return yaml_emitter_flush(emitter) + } + return true +} + +// Put a character to the output buffer. +func put(emitter *yaml_emitter_t, value byte) bool { + if emitter.buffer_pos+5 >= len(emitter.buffer) && !yaml_emitter_flush(emitter) { + return false + } + emitter.buffer[emitter.buffer_pos] = value + emitter.buffer_pos++ + emitter.column++ + return true +} + +// Put a line break to the output buffer. +func put_break(emitter *yaml_emitter_t) bool { + if emitter.buffer_pos+5 >= len(emitter.buffer) && !yaml_emitter_flush(emitter) { + return false + } + switch emitter.line_break { + case yaml_CR_BREAK: + emitter.buffer[emitter.buffer_pos] = '\r' + emitter.buffer_pos += 1 + case yaml_LN_BREAK: + emitter.buffer[emitter.buffer_pos] = '\n' + emitter.buffer_pos += 1 + case yaml_CRLN_BREAK: + emitter.buffer[emitter.buffer_pos+0] = '\r' + emitter.buffer[emitter.buffer_pos+1] = '\n' + emitter.buffer_pos += 2 + default: + panic("unknown line break setting") + } + if emitter.column == 0 { + emitter.space_above = true + } + emitter.column = 0 + emitter.line++ + // [Go] Do this here and below and drop from everywhere else (see commented lines). + emitter.indention = true + return true +} + +// Copy a character from a string into buffer. +func write(emitter *yaml_emitter_t, s []byte, i *int) bool { + if emitter.buffer_pos+5 >= len(emitter.buffer) && !yaml_emitter_flush(emitter) { + return false + } + p := emitter.buffer_pos + w := width(s[*i]) + switch w { + case 4: + emitter.buffer[p+3] = s[*i+3] + fallthrough + case 3: + emitter.buffer[p+2] = s[*i+2] + fallthrough + case 2: + emitter.buffer[p+1] = s[*i+1] + fallthrough + case 1: + emitter.buffer[p+0] = s[*i+0] + default: + panic("unknown character width") + } + emitter.column++ + emitter.buffer_pos += w + *i += w + return true +} + +// Write a whole string into buffer. +func write_all(emitter *yaml_emitter_t, s []byte) bool { + for i := 0; i < len(s); { + if !write(emitter, s, &i) { + return false + } + } + return true +} + +// Copy a line break character from a string into buffer. +func write_break(emitter *yaml_emitter_t, s []byte, i *int) bool { + if s[*i] == '\n' { + if !put_break(emitter) { + return false + } + *i++ + } else { + if !write(emitter, s, i) { + return false + } + if emitter.column == 0 { + emitter.space_above = true + } + emitter.column = 0 + emitter.line++ + // [Go] Do this here and above and drop from everywhere else (see commented lines). + emitter.indention = true + } + return true +} + +// Set an emitter error and return false. +func yaml_emitter_set_emitter_error(emitter *yaml_emitter_t, problem string) bool { + emitter.error = yaml_EMITTER_ERROR + emitter.problem = problem + return false +} + +// Emit an event. +func yaml_emitter_emit(emitter *yaml_emitter_t, event *yaml_event_t) bool { + emitter.events = append(emitter.events, *event) + for !yaml_emitter_need_more_events(emitter) { + event := &emitter.events[emitter.events_head] + if !yaml_emitter_analyze_event(emitter, event) { + return false + } + if !yaml_emitter_state_machine(emitter, event) { + return false + } + yaml_event_delete(event) + emitter.events_head++ + } + return true +} + +// Check if we need to accumulate more events before emitting. +// +// We accumulate extra +// - 1 event for DOCUMENT-START +// - 2 events for SEQUENCE-START +// - 3 events for MAPPING-START +// +func yaml_emitter_need_more_events(emitter *yaml_emitter_t) bool { + if emitter.events_head == len(emitter.events) { + return true + } + var accumulate int + switch emitter.events[emitter.events_head].typ { + case yaml_DOCUMENT_START_EVENT: + accumulate = 1 + break + case yaml_SEQUENCE_START_EVENT: + accumulate = 2 + break + case yaml_MAPPING_START_EVENT: + accumulate = 3 + break + default: + return false + } + if len(emitter.events)-emitter.events_head > accumulate { + return false + } + var level int + for i := emitter.events_head; i < len(emitter.events); i++ { + switch emitter.events[i].typ { + case yaml_STREAM_START_EVENT, yaml_DOCUMENT_START_EVENT, yaml_SEQUENCE_START_EVENT, yaml_MAPPING_START_EVENT: + level++ + case yaml_STREAM_END_EVENT, yaml_DOCUMENT_END_EVENT, yaml_SEQUENCE_END_EVENT, yaml_MAPPING_END_EVENT: + level-- + } + if level == 0 { + return false + } + } + return true +} + +// Append a directive to the directives stack. +func yaml_emitter_append_tag_directive(emitter *yaml_emitter_t, value *yaml_tag_directive_t, allow_duplicates bool) bool { + for i := 0; i < len(emitter.tag_directives); i++ { + if bytes.Equal(value.handle, emitter.tag_directives[i].handle) { + if allow_duplicates { + return true + } + return yaml_emitter_set_emitter_error(emitter, "duplicate %TAG directive") + } + } + + // [Go] Do we actually need to copy this given garbage collection + // and the lack of deallocating destructors? + tag_copy := yaml_tag_directive_t{ + handle: make([]byte, len(value.handle)), + prefix: make([]byte, len(value.prefix)), + } + copy(tag_copy.handle, value.handle) + copy(tag_copy.prefix, value.prefix) + emitter.tag_directives = append(emitter.tag_directives, tag_copy) + return true +} + +// Increase the indentation level. +func yaml_emitter_increase_indent(emitter *yaml_emitter_t, flow, indentless bool) bool { + emitter.indents = append(emitter.indents, emitter.indent) + if emitter.indent < 0 { + if flow { + emitter.indent = emitter.best_indent + } else { + emitter.indent = 0 + } + } else if !indentless { + // [Go] This was changed so that indentations are more regular. + if emitter.states[len(emitter.states)-1] == yaml_EMIT_BLOCK_SEQUENCE_ITEM_STATE { + // The first indent inside a sequence will just skip the "- " indicator. + emitter.indent += 2 + } else { + // Everything else aligns to the chosen indentation. + emitter.indent = emitter.best_indent*((emitter.indent+emitter.best_indent)/emitter.best_indent) + } + } + return true +} + +// State dispatcher. +func yaml_emitter_state_machine(emitter *yaml_emitter_t, event *yaml_event_t) bool { + switch emitter.state { + default: + case yaml_EMIT_STREAM_START_STATE: + return yaml_emitter_emit_stream_start(emitter, event) + + case yaml_EMIT_FIRST_DOCUMENT_START_STATE: + return yaml_emitter_emit_document_start(emitter, event, true) + + case yaml_EMIT_DOCUMENT_START_STATE: + return yaml_emitter_emit_document_start(emitter, event, false) + + case yaml_EMIT_DOCUMENT_CONTENT_STATE: + return yaml_emitter_emit_document_content(emitter, event) + + case yaml_EMIT_DOCUMENT_END_STATE: + return yaml_emitter_emit_document_end(emitter, event) + + case yaml_EMIT_FLOW_SEQUENCE_FIRST_ITEM_STATE: + return yaml_emitter_emit_flow_sequence_item(emitter, event, true, false) + + case yaml_EMIT_FLOW_SEQUENCE_TRAIL_ITEM_STATE: + return yaml_emitter_emit_flow_sequence_item(emitter, event, false, true) + + case yaml_EMIT_FLOW_SEQUENCE_ITEM_STATE: + return yaml_emitter_emit_flow_sequence_item(emitter, event, false, false) + + case yaml_EMIT_FLOW_MAPPING_FIRST_KEY_STATE: + return yaml_emitter_emit_flow_mapping_key(emitter, event, true, false) + + case yaml_EMIT_FLOW_MAPPING_TRAIL_KEY_STATE: + return yaml_emitter_emit_flow_mapping_key(emitter, event, false, true) + + case yaml_EMIT_FLOW_MAPPING_KEY_STATE: + return yaml_emitter_emit_flow_mapping_key(emitter, event, false, false) + + case yaml_EMIT_FLOW_MAPPING_SIMPLE_VALUE_STATE: + return yaml_emitter_emit_flow_mapping_value(emitter, event, true) + + case yaml_EMIT_FLOW_MAPPING_VALUE_STATE: + return yaml_emitter_emit_flow_mapping_value(emitter, event, false) + + case yaml_EMIT_BLOCK_SEQUENCE_FIRST_ITEM_STATE: + return yaml_emitter_emit_block_sequence_item(emitter, event, true) + + case yaml_EMIT_BLOCK_SEQUENCE_ITEM_STATE: + return yaml_emitter_emit_block_sequence_item(emitter, event, false) + + case yaml_EMIT_BLOCK_MAPPING_FIRST_KEY_STATE: + return yaml_emitter_emit_block_mapping_key(emitter, event, true) + + case yaml_EMIT_BLOCK_MAPPING_KEY_STATE: + return yaml_emitter_emit_block_mapping_key(emitter, event, false) + + case yaml_EMIT_BLOCK_MAPPING_SIMPLE_VALUE_STATE: + return yaml_emitter_emit_block_mapping_value(emitter, event, true) + + case yaml_EMIT_BLOCK_MAPPING_VALUE_STATE: + return yaml_emitter_emit_block_mapping_value(emitter, event, false) + + case yaml_EMIT_END_STATE: + return yaml_emitter_set_emitter_error(emitter, "expected nothing after STREAM-END") + } + panic("invalid emitter state") +} + +// Expect STREAM-START. +func yaml_emitter_emit_stream_start(emitter *yaml_emitter_t, event *yaml_event_t) bool { + if event.typ != yaml_STREAM_START_EVENT { + return yaml_emitter_set_emitter_error(emitter, "expected STREAM-START") + } + if emitter.encoding == yaml_ANY_ENCODING { + emitter.encoding = event.encoding + if emitter.encoding == yaml_ANY_ENCODING { + emitter.encoding = yaml_UTF8_ENCODING + } + } + if emitter.best_indent < 2 || emitter.best_indent > 9 { + emitter.best_indent = 2 + } + if emitter.best_width >= 0 && emitter.best_width <= emitter.best_indent*2 { + emitter.best_width = 80 + } + if emitter.best_width < 0 { + emitter.best_width = 1<<31 - 1 + } + if emitter.line_break == yaml_ANY_BREAK { + emitter.line_break = yaml_LN_BREAK + } + + emitter.indent = -1 + emitter.line = 0 + emitter.column = 0 + emitter.whitespace = true + emitter.indention = true + emitter.space_above = true + emitter.foot_indent = -1 + + if emitter.encoding != yaml_UTF8_ENCODING { + if !yaml_emitter_write_bom(emitter) { + return false + } + } + emitter.state = yaml_EMIT_FIRST_DOCUMENT_START_STATE + return true +} + +// Expect DOCUMENT-START or STREAM-END. +func yaml_emitter_emit_document_start(emitter *yaml_emitter_t, event *yaml_event_t, first bool) bool { + + if event.typ == yaml_DOCUMENT_START_EVENT { + + if event.version_directive != nil { + if !yaml_emitter_analyze_version_directive(emitter, event.version_directive) { + return false + } + } + + for i := 0; i < len(event.tag_directives); i++ { + tag_directive := &event.tag_directives[i] + if !yaml_emitter_analyze_tag_directive(emitter, tag_directive) { + return false + } + if !yaml_emitter_append_tag_directive(emitter, tag_directive, false) { + return false + } + } + + for i := 0; i < len(default_tag_directives); i++ { + tag_directive := &default_tag_directives[i] + if !yaml_emitter_append_tag_directive(emitter, tag_directive, true) { + return false + } + } + + implicit := event.implicit + if !first || emitter.canonical { + implicit = false + } + + if emitter.open_ended && (event.version_directive != nil || len(event.tag_directives) > 0) { + if !yaml_emitter_write_indicator(emitter, []byte("..."), true, false, false) { + return false + } + if !yaml_emitter_write_indent(emitter) { + return false + } + } + + if event.version_directive != nil { + implicit = false + if !yaml_emitter_write_indicator(emitter, []byte("%YAML"), true, false, false) { + return false + } + if !yaml_emitter_write_indicator(emitter, []byte("1.1"), true, false, false) { + return false + } + if !yaml_emitter_write_indent(emitter) { + return false + } + } + + if len(event.tag_directives) > 0 { + implicit = false + for i := 0; i < len(event.tag_directives); i++ { + tag_directive := &event.tag_directives[i] + if !yaml_emitter_write_indicator(emitter, []byte("%TAG"), true, false, false) { + return false + } + if !yaml_emitter_write_tag_handle(emitter, tag_directive.handle) { + return false + } + if !yaml_emitter_write_tag_content(emitter, tag_directive.prefix, true) { + return false + } + if !yaml_emitter_write_indent(emitter) { + return false + } + } + } + + if yaml_emitter_check_empty_document(emitter) { + implicit = false + } + if !implicit { + if !yaml_emitter_write_indent(emitter) { + return false + } + if !yaml_emitter_write_indicator(emitter, []byte("---"), true, false, false) { + return false + } + if emitter.canonical || true { + if !yaml_emitter_write_indent(emitter) { + return false + } + } + } + + if len(emitter.head_comment) > 0 { + if !yaml_emitter_process_head_comment(emitter) { + return false + } + if !put_break(emitter) { + return false + } + } + + emitter.state = yaml_EMIT_DOCUMENT_CONTENT_STATE + return true + } + + if event.typ == yaml_STREAM_END_EVENT { + if emitter.open_ended { + if !yaml_emitter_write_indicator(emitter, []byte("..."), true, false, false) { + return false + } + if !yaml_emitter_write_indent(emitter) { + return false + } + } + if !yaml_emitter_flush(emitter) { + return false + } + emitter.state = yaml_EMIT_END_STATE + return true + } + + return yaml_emitter_set_emitter_error(emitter, "expected DOCUMENT-START or STREAM-END") +} + +// Expect the root node. +func yaml_emitter_emit_document_content(emitter *yaml_emitter_t, event *yaml_event_t) bool { + emitter.states = append(emitter.states, yaml_EMIT_DOCUMENT_END_STATE) + + if !yaml_emitter_process_head_comment(emitter) { + return false + } + if !yaml_emitter_emit_node(emitter, event, true, false, false, false) { + return false + } + if !yaml_emitter_process_line_comment(emitter) { + return false + } + if !yaml_emitter_process_foot_comment(emitter) { + return false + } + return true +} + +// Expect DOCUMENT-END. +func yaml_emitter_emit_document_end(emitter *yaml_emitter_t, event *yaml_event_t) bool { + if event.typ != yaml_DOCUMENT_END_EVENT { + return yaml_emitter_set_emitter_error(emitter, "expected DOCUMENT-END") + } + // [Go] Force document foot separation. + emitter.foot_indent = 0 + if !yaml_emitter_process_foot_comment(emitter) { + return false + } + emitter.foot_indent = -1 + if !yaml_emitter_write_indent(emitter) { + return false + } + if !event.implicit { + // [Go] Allocate the slice elsewhere. + if !yaml_emitter_write_indicator(emitter, []byte("..."), true, false, false) { + return false + } + if !yaml_emitter_write_indent(emitter) { + return false + } + } + if !yaml_emitter_flush(emitter) { + return false + } + emitter.state = yaml_EMIT_DOCUMENT_START_STATE + emitter.tag_directives = emitter.tag_directives[:0] + return true +} + +// Expect a flow item node. +func yaml_emitter_emit_flow_sequence_item(emitter *yaml_emitter_t, event *yaml_event_t, first, trail bool) bool { + if first { + if !yaml_emitter_write_indicator(emitter, []byte{'['}, true, true, false) { + return false + } + if !yaml_emitter_increase_indent(emitter, true, false) { + return false + } + emitter.flow_level++ + } + + if event.typ == yaml_SEQUENCE_END_EVENT { + if emitter.canonical && !first && !trail { + if !yaml_emitter_write_indicator(emitter, []byte{','}, false, false, false) { + return false + } + } + emitter.flow_level-- + emitter.indent = emitter.indents[len(emitter.indents)-1] + emitter.indents = emitter.indents[:len(emitter.indents)-1] + if emitter.column == 0 || emitter.canonical && !first { + if !yaml_emitter_write_indent(emitter) { + return false + } + } + if !yaml_emitter_write_indicator(emitter, []byte{']'}, false, false, false) { + return false + } + if !yaml_emitter_process_line_comment(emitter) { + return false + } + if !yaml_emitter_process_foot_comment(emitter) { + return false + } + emitter.state = emitter.states[len(emitter.states)-1] + emitter.states = emitter.states[:len(emitter.states)-1] + + return true + } + + if !first && !trail { + if !yaml_emitter_write_indicator(emitter, []byte{','}, false, false, false) { + return false + } + } + + if !yaml_emitter_process_head_comment(emitter) { + return false + } + if emitter.column == 0 { + if !yaml_emitter_write_indent(emitter) { + return false + } + } + + if emitter.canonical || emitter.column > emitter.best_width { + if !yaml_emitter_write_indent(emitter) { + return false + } + } + if len(emitter.line_comment)+len(emitter.foot_comment)+len(emitter.tail_comment) > 0 { + emitter.states = append(emitter.states, yaml_EMIT_FLOW_SEQUENCE_TRAIL_ITEM_STATE) + } else { + emitter.states = append(emitter.states, yaml_EMIT_FLOW_SEQUENCE_ITEM_STATE) + } + if !yaml_emitter_emit_node(emitter, event, false, true, false, false) { + return false + } + if len(emitter.line_comment)+len(emitter.foot_comment)+len(emitter.tail_comment) > 0 { + if !yaml_emitter_write_indicator(emitter, []byte{','}, false, false, false) { + return false + } + } + if !yaml_emitter_process_line_comment(emitter) { + return false + } + if !yaml_emitter_process_foot_comment(emitter) { + return false + } + return true +} + +// Expect a flow key node. +func yaml_emitter_emit_flow_mapping_key(emitter *yaml_emitter_t, event *yaml_event_t, first, trail bool) bool { + if first { + if !yaml_emitter_write_indicator(emitter, []byte{'{'}, true, true, false) { + return false + } + if !yaml_emitter_increase_indent(emitter, true, false) { + return false + } + emitter.flow_level++ + } + + if event.typ == yaml_MAPPING_END_EVENT { + if (emitter.canonical || len(emitter.head_comment)+len(emitter.foot_comment)+len(emitter.tail_comment) > 0) && !first && !trail { + if !yaml_emitter_write_indicator(emitter, []byte{','}, false, false, false) { + return false + } + } + if !yaml_emitter_process_head_comment(emitter) { + return false + } + emitter.flow_level-- + emitter.indent = emitter.indents[len(emitter.indents)-1] + emitter.indents = emitter.indents[:len(emitter.indents)-1] + if emitter.canonical && !first { + if !yaml_emitter_write_indent(emitter) { + return false + } + } + if !yaml_emitter_write_indicator(emitter, []byte{'}'}, false, false, false) { + return false + } + if !yaml_emitter_process_line_comment(emitter) { + return false + } + if !yaml_emitter_process_foot_comment(emitter) { + return false + } + emitter.state = emitter.states[len(emitter.states)-1] + emitter.states = emitter.states[:len(emitter.states)-1] + return true + } + + if !first && !trail { + if !yaml_emitter_write_indicator(emitter, []byte{','}, false, false, false) { + return false + } + } + + if !yaml_emitter_process_head_comment(emitter) { + return false + } + + if emitter.column == 0 { + if !yaml_emitter_write_indent(emitter) { + return false + } + } + + if emitter.canonical || emitter.column > emitter.best_width { + if !yaml_emitter_write_indent(emitter) { + return false + } + } + + if !emitter.canonical && yaml_emitter_check_simple_key(emitter) { + emitter.states = append(emitter.states, yaml_EMIT_FLOW_MAPPING_SIMPLE_VALUE_STATE) + return yaml_emitter_emit_node(emitter, event, false, false, true, true) + } + if !yaml_emitter_write_indicator(emitter, []byte{'?'}, true, false, false) { + return false + } + emitter.states = append(emitter.states, yaml_EMIT_FLOW_MAPPING_VALUE_STATE) + return yaml_emitter_emit_node(emitter, event, false, false, true, false) +} + +// Expect a flow value node. +func yaml_emitter_emit_flow_mapping_value(emitter *yaml_emitter_t, event *yaml_event_t, simple bool) bool { + if simple { + if !yaml_emitter_write_indicator(emitter, []byte{':'}, false, false, false) { + return false + } + } else { + if emitter.canonical || emitter.column > emitter.best_width { + if !yaml_emitter_write_indent(emitter) { + return false + } + } + if !yaml_emitter_write_indicator(emitter, []byte{':'}, true, false, false) { + return false + } + } + if len(emitter.line_comment)+len(emitter.foot_comment)+len(emitter.tail_comment) > 0 { + emitter.states = append(emitter.states, yaml_EMIT_FLOW_MAPPING_TRAIL_KEY_STATE) + } else { + emitter.states = append(emitter.states, yaml_EMIT_FLOW_MAPPING_KEY_STATE) + } + if !yaml_emitter_emit_node(emitter, event, false, false, true, false) { + return false + } + if len(emitter.line_comment)+len(emitter.foot_comment)+len(emitter.tail_comment) > 0 { + if !yaml_emitter_write_indicator(emitter, []byte{','}, false, false, false) { + return false + } + } + if !yaml_emitter_process_line_comment(emitter) { + return false + } + if !yaml_emitter_process_foot_comment(emitter) { + return false + } + return true +} + +// Expect a block item node. +func yaml_emitter_emit_block_sequence_item(emitter *yaml_emitter_t, event *yaml_event_t, first bool) bool { + if first { + if !yaml_emitter_increase_indent(emitter, false, false) { + return false + } + } + if event.typ == yaml_SEQUENCE_END_EVENT { + emitter.indent = emitter.indents[len(emitter.indents)-1] + emitter.indents = emitter.indents[:len(emitter.indents)-1] + emitter.state = emitter.states[len(emitter.states)-1] + emitter.states = emitter.states[:len(emitter.states)-1] + return true + } + if !yaml_emitter_process_head_comment(emitter) { + return false + } + if !yaml_emitter_write_indent(emitter) { + return false + } + if !yaml_emitter_write_indicator(emitter, []byte{'-'}, true, false, true) { + return false + } + emitter.states = append(emitter.states, yaml_EMIT_BLOCK_SEQUENCE_ITEM_STATE) + if !yaml_emitter_emit_node(emitter, event, false, true, false, false) { + return false + } + if !yaml_emitter_process_line_comment(emitter) { + return false + } + if !yaml_emitter_process_foot_comment(emitter) { + return false + } + return true +} + +// Expect a block key node. +func yaml_emitter_emit_block_mapping_key(emitter *yaml_emitter_t, event *yaml_event_t, first bool) bool { + if first { + if !yaml_emitter_increase_indent(emitter, false, false) { + return false + } + } + if !yaml_emitter_process_head_comment(emitter) { + return false + } + if event.typ == yaml_MAPPING_END_EVENT { + emitter.indent = emitter.indents[len(emitter.indents)-1] + emitter.indents = emitter.indents[:len(emitter.indents)-1] + emitter.state = emitter.states[len(emitter.states)-1] + emitter.states = emitter.states[:len(emitter.states)-1] + return true + } + if !yaml_emitter_write_indent(emitter) { + return false + } + if len(emitter.line_comment) > 0 { + // [Go] A line comment was provided for the key. That's unusual as the + // scanner associates line comments with the value. Either way, + // save the line comment and render it appropriately later. + emitter.key_line_comment = emitter.line_comment + emitter.line_comment = nil + } + if yaml_emitter_check_simple_key(emitter) { + emitter.states = append(emitter.states, yaml_EMIT_BLOCK_MAPPING_SIMPLE_VALUE_STATE) + return yaml_emitter_emit_node(emitter, event, false, false, true, true) + } + if !yaml_emitter_write_indicator(emitter, []byte{'?'}, true, false, true) { + return false + } + emitter.states = append(emitter.states, yaml_EMIT_BLOCK_MAPPING_VALUE_STATE) + return yaml_emitter_emit_node(emitter, event, false, false, true, false) +} + +// Expect a block value node. +func yaml_emitter_emit_block_mapping_value(emitter *yaml_emitter_t, event *yaml_event_t, simple bool) bool { + if simple { + if !yaml_emitter_write_indicator(emitter, []byte{':'}, false, false, false) { + return false + } + } else { + if !yaml_emitter_write_indent(emitter) { + return false + } + if !yaml_emitter_write_indicator(emitter, []byte{':'}, true, false, true) { + return false + } + } + if len(emitter.key_line_comment) > 0 { + // [Go] Line comments are generally associated with the value, but when there's + // no value on the same line as a mapping key they end up attached to the + // key itself. + if event.typ == yaml_SCALAR_EVENT { + if len(emitter.line_comment) == 0 { + // A scalar is coming and it has no line comments by itself yet, + // so just let it handle the line comment as usual. If it has a + // line comment, we can't have both so the one from the key is lost. + emitter.line_comment = emitter.key_line_comment + emitter.key_line_comment = nil + } + } else if event.sequence_style() != yaml_FLOW_SEQUENCE_STYLE && (event.typ == yaml_MAPPING_START_EVENT || event.typ == yaml_SEQUENCE_START_EVENT) { + // An indented block follows, so write the comment right now. + emitter.line_comment, emitter.key_line_comment = emitter.key_line_comment, emitter.line_comment + if !yaml_emitter_process_line_comment(emitter) { + return false + } + emitter.line_comment, emitter.key_line_comment = emitter.key_line_comment, emitter.line_comment + } + } + emitter.states = append(emitter.states, yaml_EMIT_BLOCK_MAPPING_KEY_STATE) + if !yaml_emitter_emit_node(emitter, event, false, false, true, false) { + return false + } + if !yaml_emitter_process_line_comment(emitter) { + return false + } + if !yaml_emitter_process_foot_comment(emitter) { + return false + } + return true +} + +func yaml_emitter_silent_nil_event(emitter *yaml_emitter_t, event *yaml_event_t) bool { + return event.typ == yaml_SCALAR_EVENT && event.implicit && !emitter.canonical && len(emitter.scalar_data.value) == 0 +} + +// Expect a node. +func yaml_emitter_emit_node(emitter *yaml_emitter_t, event *yaml_event_t, + root bool, sequence bool, mapping bool, simple_key bool) bool { + + emitter.root_context = root + emitter.sequence_context = sequence + emitter.mapping_context = mapping + emitter.simple_key_context = simple_key + + switch event.typ { + case yaml_ALIAS_EVENT: + return yaml_emitter_emit_alias(emitter, event) + case yaml_SCALAR_EVENT: + return yaml_emitter_emit_scalar(emitter, event) + case yaml_SEQUENCE_START_EVENT: + return yaml_emitter_emit_sequence_start(emitter, event) + case yaml_MAPPING_START_EVENT: + return yaml_emitter_emit_mapping_start(emitter, event) + default: + return yaml_emitter_set_emitter_error(emitter, + fmt.Sprintf("expected SCALAR, SEQUENCE-START, MAPPING-START, or ALIAS, but got %v", event.typ)) + } +} + +// Expect ALIAS. +func yaml_emitter_emit_alias(emitter *yaml_emitter_t, event *yaml_event_t) bool { + if !yaml_emitter_process_anchor(emitter) { + return false + } + emitter.state = emitter.states[len(emitter.states)-1] + emitter.states = emitter.states[:len(emitter.states)-1] + return true +} + +// Expect SCALAR. +func yaml_emitter_emit_scalar(emitter *yaml_emitter_t, event *yaml_event_t) bool { + if !yaml_emitter_select_scalar_style(emitter, event) { + return false + } + if !yaml_emitter_process_anchor(emitter) { + return false + } + if !yaml_emitter_process_tag(emitter) { + return false + } + if !yaml_emitter_increase_indent(emitter, true, false) { + return false + } + if !yaml_emitter_process_scalar(emitter) { + return false + } + emitter.indent = emitter.indents[len(emitter.indents)-1] + emitter.indents = emitter.indents[:len(emitter.indents)-1] + emitter.state = emitter.states[len(emitter.states)-1] + emitter.states = emitter.states[:len(emitter.states)-1] + return true +} + +// Expect SEQUENCE-START. +func yaml_emitter_emit_sequence_start(emitter *yaml_emitter_t, event *yaml_event_t) bool { + if !yaml_emitter_process_anchor(emitter) { + return false + } + if !yaml_emitter_process_tag(emitter) { + return false + } + if emitter.flow_level > 0 || emitter.canonical || event.sequence_style() == yaml_FLOW_SEQUENCE_STYLE || + yaml_emitter_check_empty_sequence(emitter) { + emitter.state = yaml_EMIT_FLOW_SEQUENCE_FIRST_ITEM_STATE + } else { + emitter.state = yaml_EMIT_BLOCK_SEQUENCE_FIRST_ITEM_STATE + } + return true +} + +// Expect MAPPING-START. +func yaml_emitter_emit_mapping_start(emitter *yaml_emitter_t, event *yaml_event_t) bool { + if !yaml_emitter_process_anchor(emitter) { + return false + } + if !yaml_emitter_process_tag(emitter) { + return false + } + if emitter.flow_level > 0 || emitter.canonical || event.mapping_style() == yaml_FLOW_MAPPING_STYLE || + yaml_emitter_check_empty_mapping(emitter) { + emitter.state = yaml_EMIT_FLOW_MAPPING_FIRST_KEY_STATE + } else { + emitter.state = yaml_EMIT_BLOCK_MAPPING_FIRST_KEY_STATE + } + return true +} + +// Check if the document content is an empty scalar. +func yaml_emitter_check_empty_document(emitter *yaml_emitter_t) bool { + return false // [Go] Huh? +} + +// Check if the next events represent an empty sequence. +func yaml_emitter_check_empty_sequence(emitter *yaml_emitter_t) bool { + if len(emitter.events)-emitter.events_head < 2 { + return false + } + return emitter.events[emitter.events_head].typ == yaml_SEQUENCE_START_EVENT && + emitter.events[emitter.events_head+1].typ == yaml_SEQUENCE_END_EVENT +} + +// Check if the next events represent an empty mapping. +func yaml_emitter_check_empty_mapping(emitter *yaml_emitter_t) bool { + if len(emitter.events)-emitter.events_head < 2 { + return false + } + return emitter.events[emitter.events_head].typ == yaml_MAPPING_START_EVENT && + emitter.events[emitter.events_head+1].typ == yaml_MAPPING_END_EVENT +} + +// Check if the next node can be expressed as a simple key. +func yaml_emitter_check_simple_key(emitter *yaml_emitter_t) bool { + length := 0 + switch emitter.events[emitter.events_head].typ { + case yaml_ALIAS_EVENT: + length += len(emitter.anchor_data.anchor) + case yaml_SCALAR_EVENT: + if emitter.scalar_data.multiline { + return false + } + length += len(emitter.anchor_data.anchor) + + len(emitter.tag_data.handle) + + len(emitter.tag_data.suffix) + + len(emitter.scalar_data.value) + case yaml_SEQUENCE_START_EVENT: + if !yaml_emitter_check_empty_sequence(emitter) { + return false + } + length += len(emitter.anchor_data.anchor) + + len(emitter.tag_data.handle) + + len(emitter.tag_data.suffix) + case yaml_MAPPING_START_EVENT: + if !yaml_emitter_check_empty_mapping(emitter) { + return false + } + length += len(emitter.anchor_data.anchor) + + len(emitter.tag_data.handle) + + len(emitter.tag_data.suffix) + default: + return false + } + return length <= 128 +} + +// Determine an acceptable scalar style. +func yaml_emitter_select_scalar_style(emitter *yaml_emitter_t, event *yaml_event_t) bool { + + no_tag := len(emitter.tag_data.handle) == 0 && len(emitter.tag_data.suffix) == 0 + if no_tag && !event.implicit && !event.quoted_implicit { + return yaml_emitter_set_emitter_error(emitter, "neither tag nor implicit flags are specified") + } + + style := event.scalar_style() + if style == yaml_ANY_SCALAR_STYLE { + style = yaml_PLAIN_SCALAR_STYLE + } + if emitter.canonical { + style = yaml_DOUBLE_QUOTED_SCALAR_STYLE + } + if emitter.simple_key_context && emitter.scalar_data.multiline { + style = yaml_DOUBLE_QUOTED_SCALAR_STYLE + } + + if style == yaml_PLAIN_SCALAR_STYLE { + if emitter.flow_level > 0 && !emitter.scalar_data.flow_plain_allowed || + emitter.flow_level == 0 && !emitter.scalar_data.block_plain_allowed { + style = yaml_SINGLE_QUOTED_SCALAR_STYLE + } + if len(emitter.scalar_data.value) == 0 && (emitter.flow_level > 0 || emitter.simple_key_context) { + style = yaml_SINGLE_QUOTED_SCALAR_STYLE + } + if no_tag && !event.implicit { + style = yaml_SINGLE_QUOTED_SCALAR_STYLE + } + } + if style == yaml_SINGLE_QUOTED_SCALAR_STYLE { + if !emitter.scalar_data.single_quoted_allowed { + style = yaml_DOUBLE_QUOTED_SCALAR_STYLE + } + } + if style == yaml_LITERAL_SCALAR_STYLE || style == yaml_FOLDED_SCALAR_STYLE { + if !emitter.scalar_data.block_allowed || emitter.flow_level > 0 || emitter.simple_key_context { + style = yaml_DOUBLE_QUOTED_SCALAR_STYLE + } + } + + if no_tag && !event.quoted_implicit && style != yaml_PLAIN_SCALAR_STYLE { + emitter.tag_data.handle = []byte{'!'} + } + emitter.scalar_data.style = style + return true +} + +// Write an anchor. +func yaml_emitter_process_anchor(emitter *yaml_emitter_t) bool { + if emitter.anchor_data.anchor == nil { + return true + } + c := []byte{'&'} + if emitter.anchor_data.alias { + c[0] = '*' + } + if !yaml_emitter_write_indicator(emitter, c, true, false, false) { + return false + } + return yaml_emitter_write_anchor(emitter, emitter.anchor_data.anchor) +} + +// Write a tag. +func yaml_emitter_process_tag(emitter *yaml_emitter_t) bool { + if len(emitter.tag_data.handle) == 0 && len(emitter.tag_data.suffix) == 0 { + return true + } + if len(emitter.tag_data.handle) > 0 { + if !yaml_emitter_write_tag_handle(emitter, emitter.tag_data.handle) { + return false + } + if len(emitter.tag_data.suffix) > 0 { + if !yaml_emitter_write_tag_content(emitter, emitter.tag_data.suffix, false) { + return false + } + } + } else { + // [Go] Allocate these slices elsewhere. + if !yaml_emitter_write_indicator(emitter, []byte("!<"), true, false, false) { + return false + } + if !yaml_emitter_write_tag_content(emitter, emitter.tag_data.suffix, false) { + return false + } + if !yaml_emitter_write_indicator(emitter, []byte{'>'}, false, false, false) { + return false + } + } + return true +} + +// Write a scalar. +func yaml_emitter_process_scalar(emitter *yaml_emitter_t) bool { + switch emitter.scalar_data.style { + case yaml_PLAIN_SCALAR_STYLE: + return yaml_emitter_write_plain_scalar(emitter, emitter.scalar_data.value, !emitter.simple_key_context) + + case yaml_SINGLE_QUOTED_SCALAR_STYLE: + return yaml_emitter_write_single_quoted_scalar(emitter, emitter.scalar_data.value, !emitter.simple_key_context) + + case yaml_DOUBLE_QUOTED_SCALAR_STYLE: + return yaml_emitter_write_double_quoted_scalar(emitter, emitter.scalar_data.value, !emitter.simple_key_context) + + case yaml_LITERAL_SCALAR_STYLE: + return yaml_emitter_write_literal_scalar(emitter, emitter.scalar_data.value) + + case yaml_FOLDED_SCALAR_STYLE: + return yaml_emitter_write_folded_scalar(emitter, emitter.scalar_data.value) + } + panic("unknown scalar style") +} + +// Write a head comment. +func yaml_emitter_process_head_comment(emitter *yaml_emitter_t) bool { + if len(emitter.tail_comment) > 0 { + if !yaml_emitter_write_indent(emitter) { + return false + } + if !yaml_emitter_write_comment(emitter, emitter.tail_comment) { + return false + } + emitter.tail_comment = emitter.tail_comment[:0] + emitter.foot_indent = emitter.indent + if emitter.foot_indent < 0 { + emitter.foot_indent = 0 + } + } + + if len(emitter.head_comment) == 0 { + return true + } + if !yaml_emitter_write_indent(emitter) { + return false + } + if !yaml_emitter_write_comment(emitter, emitter.head_comment) { + return false + } + emitter.head_comment = emitter.head_comment[:0] + return true +} + +// Write an line comment. +func yaml_emitter_process_line_comment(emitter *yaml_emitter_t) bool { + if len(emitter.line_comment) == 0 { + return true + } + if !emitter.whitespace { + if !put(emitter, ' ') { + return false + } + } + if !yaml_emitter_write_comment(emitter, emitter.line_comment) { + return false + } + emitter.line_comment = emitter.line_comment[:0] + return true +} + +// Write a foot comment. +func yaml_emitter_process_foot_comment(emitter *yaml_emitter_t) bool { + if len(emitter.foot_comment) == 0 { + return true + } + if !yaml_emitter_write_indent(emitter) { + return false + } + if !yaml_emitter_write_comment(emitter, emitter.foot_comment) { + return false + } + emitter.foot_comment = emitter.foot_comment[:0] + emitter.foot_indent = emitter.indent + if emitter.foot_indent < 0 { + emitter.foot_indent = 0 + } + return true +} + +// Check if a %YAML directive is valid. +func yaml_emitter_analyze_version_directive(emitter *yaml_emitter_t, version_directive *yaml_version_directive_t) bool { + if version_directive.major != 1 || version_directive.minor != 1 { + return yaml_emitter_set_emitter_error(emitter, "incompatible %YAML directive") + } + return true +} + +// Check if a %TAG directive is valid. +func yaml_emitter_analyze_tag_directive(emitter *yaml_emitter_t, tag_directive *yaml_tag_directive_t) bool { + handle := tag_directive.handle + prefix := tag_directive.prefix + if len(handle) == 0 { + return yaml_emitter_set_emitter_error(emitter, "tag handle must not be empty") + } + if handle[0] != '!' { + return yaml_emitter_set_emitter_error(emitter, "tag handle must start with '!'") + } + if handle[len(handle)-1] != '!' { + return yaml_emitter_set_emitter_error(emitter, "tag handle must end with '!'") + } + for i := 1; i < len(handle)-1; i += width(handle[i]) { + if !is_alpha(handle, i) { + return yaml_emitter_set_emitter_error(emitter, "tag handle must contain alphanumerical characters only") + } + } + if len(prefix) == 0 { + return yaml_emitter_set_emitter_error(emitter, "tag prefix must not be empty") + } + return true +} + +// Check if an anchor is valid. +func yaml_emitter_analyze_anchor(emitter *yaml_emitter_t, anchor []byte, alias bool) bool { + if len(anchor) == 0 { + problem := "anchor value must not be empty" + if alias { + problem = "alias value must not be empty" + } + return yaml_emitter_set_emitter_error(emitter, problem) + } + for i := 0; i < len(anchor); i += width(anchor[i]) { + if !is_alpha(anchor, i) { + problem := "anchor value must contain alphanumerical characters only" + if alias { + problem = "alias value must contain alphanumerical characters only" + } + return yaml_emitter_set_emitter_error(emitter, problem) + } + } + emitter.anchor_data.anchor = anchor + emitter.anchor_data.alias = alias + return true +} + +// Check if a tag is valid. +func yaml_emitter_analyze_tag(emitter *yaml_emitter_t, tag []byte) bool { + if len(tag) == 0 { + return yaml_emitter_set_emitter_error(emitter, "tag value must not be empty") + } + for i := 0; i < len(emitter.tag_directives); i++ { + tag_directive := &emitter.tag_directives[i] + if bytes.HasPrefix(tag, tag_directive.prefix) { + emitter.tag_data.handle = tag_directive.handle + emitter.tag_data.suffix = tag[len(tag_directive.prefix):] + return true + } + } + emitter.tag_data.suffix = tag + return true +} + +// Check if a scalar is valid. +func yaml_emitter_analyze_scalar(emitter *yaml_emitter_t, value []byte) bool { + var ( + block_indicators = false + flow_indicators = false + line_breaks = false + special_characters = false + tab_characters = false + + leading_space = false + leading_break = false + trailing_space = false + trailing_break = false + break_space = false + space_break = false + + preceded_by_whitespace = false + followed_by_whitespace = false + previous_space = false + previous_break = false + ) + + emitter.scalar_data.value = value + + if len(value) == 0 { + emitter.scalar_data.multiline = false + emitter.scalar_data.flow_plain_allowed = false + emitter.scalar_data.block_plain_allowed = true + emitter.scalar_data.single_quoted_allowed = true + emitter.scalar_data.block_allowed = false + return true + } + + if len(value) >= 3 && ((value[0] == '-' && value[1] == '-' && value[2] == '-') || (value[0] == '.' && value[1] == '.' && value[2] == '.')) { + block_indicators = true + flow_indicators = true + } + + preceded_by_whitespace = true + for i, w := 0, 0; i < len(value); i += w { + w = width(value[i]) + followed_by_whitespace = i+w >= len(value) || is_blank(value, i+w) + + if i == 0 { + switch value[i] { + case '#', ',', '[', ']', '{', '}', '&', '*', '!', '|', '>', '\'', '"', '%', '@', '`': + flow_indicators = true + block_indicators = true + case '?', ':': + flow_indicators = true + if followed_by_whitespace { + block_indicators = true + } + case '-': + if followed_by_whitespace { + flow_indicators = true + block_indicators = true + } + } + } else { + switch value[i] { + case ',', '?', '[', ']', '{', '}': + flow_indicators = true + case ':': + flow_indicators = true + if followed_by_whitespace { + block_indicators = true + } + case '#': + if preceded_by_whitespace { + flow_indicators = true + block_indicators = true + } + } + } + + if value[i] == '\t' { + tab_characters = true + } else if !is_printable(value, i) || !is_ascii(value, i) && !emitter.unicode { + special_characters = true + } + if is_space(value, i) { + if i == 0 { + leading_space = true + } + if i+width(value[i]) == len(value) { + trailing_space = true + } + if previous_break { + break_space = true + } + previous_space = true + previous_break = false + } else if is_break(value, i) { + line_breaks = true + if i == 0 { + leading_break = true + } + if i+width(value[i]) == len(value) { + trailing_break = true + } + if previous_space { + space_break = true + } + previous_space = false + previous_break = true + } else { + previous_space = false + previous_break = false + } + + // [Go]: Why 'z'? Couldn't be the end of the string as that's the loop condition. + preceded_by_whitespace = is_blankz(value, i) + } + + emitter.scalar_data.multiline = line_breaks + emitter.scalar_data.flow_plain_allowed = true + emitter.scalar_data.block_plain_allowed = true + emitter.scalar_data.single_quoted_allowed = true + emitter.scalar_data.block_allowed = true + + if leading_space || leading_break || trailing_space || trailing_break { + emitter.scalar_data.flow_plain_allowed = false + emitter.scalar_data.block_plain_allowed = false + } + if trailing_space { + emitter.scalar_data.block_allowed = false + } + if break_space { + emitter.scalar_data.flow_plain_allowed = false + emitter.scalar_data.block_plain_allowed = false + emitter.scalar_data.single_quoted_allowed = false + } + if space_break || tab_characters || special_characters { + emitter.scalar_data.flow_plain_allowed = false + emitter.scalar_data.block_plain_allowed = false + emitter.scalar_data.single_quoted_allowed = false + } + if space_break || special_characters { + emitter.scalar_data.block_allowed = false + } + if line_breaks { + emitter.scalar_data.flow_plain_allowed = false + emitter.scalar_data.block_plain_allowed = false + } + if flow_indicators { + emitter.scalar_data.flow_plain_allowed = false + } + if block_indicators { + emitter.scalar_data.block_plain_allowed = false + } + return true +} + +// Check if the event data is valid. +func yaml_emitter_analyze_event(emitter *yaml_emitter_t, event *yaml_event_t) bool { + + emitter.anchor_data.anchor = nil + emitter.tag_data.handle = nil + emitter.tag_data.suffix = nil + emitter.scalar_data.value = nil + + if len(event.head_comment) > 0 { + emitter.head_comment = event.head_comment + } + if len(event.line_comment) > 0 { + emitter.line_comment = event.line_comment + } + if len(event.foot_comment) > 0 { + emitter.foot_comment = event.foot_comment + } + if len(event.tail_comment) > 0 { + emitter.tail_comment = event.tail_comment + } + + switch event.typ { + case yaml_ALIAS_EVENT: + if !yaml_emitter_analyze_anchor(emitter, event.anchor, true) { + return false + } + + case yaml_SCALAR_EVENT: + if len(event.anchor) > 0 { + if !yaml_emitter_analyze_anchor(emitter, event.anchor, false) { + return false + } + } + if len(event.tag) > 0 && (emitter.canonical || (!event.implicit && !event.quoted_implicit)) { + if !yaml_emitter_analyze_tag(emitter, event.tag) { + return false + } + } + if !yaml_emitter_analyze_scalar(emitter, event.value) { + return false + } + + case yaml_SEQUENCE_START_EVENT: + if len(event.anchor) > 0 { + if !yaml_emitter_analyze_anchor(emitter, event.anchor, false) { + return false + } + } + if len(event.tag) > 0 && (emitter.canonical || !event.implicit) { + if !yaml_emitter_analyze_tag(emitter, event.tag) { + return false + } + } + + case yaml_MAPPING_START_EVENT: + if len(event.anchor) > 0 { + if !yaml_emitter_analyze_anchor(emitter, event.anchor, false) { + return false + } + } + if len(event.tag) > 0 && (emitter.canonical || !event.implicit) { + if !yaml_emitter_analyze_tag(emitter, event.tag) { + return false + } + } + } + return true +} + +// Write the BOM character. +func yaml_emitter_write_bom(emitter *yaml_emitter_t) bool { + if !flush(emitter) { + return false + } + pos := emitter.buffer_pos + emitter.buffer[pos+0] = '\xEF' + emitter.buffer[pos+1] = '\xBB' + emitter.buffer[pos+2] = '\xBF' + emitter.buffer_pos += 3 + return true +} + +func yaml_emitter_write_indent(emitter *yaml_emitter_t) bool { + indent := emitter.indent + if indent < 0 { + indent = 0 + } + if !emitter.indention || emitter.column > indent || (emitter.column == indent && !emitter.whitespace) { + if !put_break(emitter) { + return false + } + } + if emitter.foot_indent == indent { + if !put_break(emitter) { + return false + } + } + for emitter.column < indent { + if !put(emitter, ' ') { + return false + } + } + emitter.whitespace = true + //emitter.indention = true + emitter.space_above = false + emitter.foot_indent = -1 + return true +} + +func yaml_emitter_write_indicator(emitter *yaml_emitter_t, indicator []byte, need_whitespace, is_whitespace, is_indention bool) bool { + if need_whitespace && !emitter.whitespace { + if !put(emitter, ' ') { + return false + } + } + if !write_all(emitter, indicator) { + return false + } + emitter.whitespace = is_whitespace + emitter.indention = (emitter.indention && is_indention) + emitter.open_ended = false + return true +} + +func yaml_emitter_write_anchor(emitter *yaml_emitter_t, value []byte) bool { + if !write_all(emitter, value) { + return false + } + emitter.whitespace = false + emitter.indention = false + return true +} + +func yaml_emitter_write_tag_handle(emitter *yaml_emitter_t, value []byte) bool { + if !emitter.whitespace { + if !put(emitter, ' ') { + return false + } + } + if !write_all(emitter, value) { + return false + } + emitter.whitespace = false + emitter.indention = false + return true +} + +func yaml_emitter_write_tag_content(emitter *yaml_emitter_t, value []byte, need_whitespace bool) bool { + if need_whitespace && !emitter.whitespace { + if !put(emitter, ' ') { + return false + } + } + for i := 0; i < len(value); { + var must_write bool + switch value[i] { + case ';', '/', '?', ':', '@', '&', '=', '+', '$', ',', '_', '.', '~', '*', '\'', '(', ')', '[', ']': + must_write = true + default: + must_write = is_alpha(value, i) + } + if must_write { + if !write(emitter, value, &i) { + return false + } + } else { + w := width(value[i]) + for k := 0; k < w; k++ { + octet := value[i] + i++ + if !put(emitter, '%') { + return false + } + + c := octet >> 4 + if c < 10 { + c += '0' + } else { + c += 'A' - 10 + } + if !put(emitter, c) { + return false + } + + c = octet & 0x0f + if c < 10 { + c += '0' + } else { + c += 'A' - 10 + } + if !put(emitter, c) { + return false + } + } + } + } + emitter.whitespace = false + emitter.indention = false + return true +} + +func yaml_emitter_write_plain_scalar(emitter *yaml_emitter_t, value []byte, allow_breaks bool) bool { + if len(value) > 0 && !emitter.whitespace { + if !put(emitter, ' ') { + return false + } + } + + spaces := false + breaks := false + for i := 0; i < len(value); { + if is_space(value, i) { + if allow_breaks && !spaces && emitter.column > emitter.best_width && !is_space(value, i+1) { + if !yaml_emitter_write_indent(emitter) { + return false + } + i += width(value[i]) + } else { + if !write(emitter, value, &i) { + return false + } + } + spaces = true + } else if is_break(value, i) { + if !breaks && value[i] == '\n' { + if !put_break(emitter) { + return false + } + } + if !write_break(emitter, value, &i) { + return false + } + //emitter.indention = true + breaks = true + } else { + if breaks { + if !yaml_emitter_write_indent(emitter) { + return false + } + } + if !write(emitter, value, &i) { + return false + } + emitter.indention = false + spaces = false + breaks = false + } + } + + if len(value) > 0 { + emitter.whitespace = false + } + emitter.indention = false + if emitter.root_context { + emitter.open_ended = true + } + + return true +} + +func yaml_emitter_write_single_quoted_scalar(emitter *yaml_emitter_t, value []byte, allow_breaks bool) bool { + + if !yaml_emitter_write_indicator(emitter, []byte{'\''}, true, false, false) { + return false + } + + spaces := false + breaks := false + for i := 0; i < len(value); { + if is_space(value, i) { + if allow_breaks && !spaces && emitter.column > emitter.best_width && i > 0 && i < len(value)-1 && !is_space(value, i+1) { + if !yaml_emitter_write_indent(emitter) { + return false + } + i += width(value[i]) + } else { + if !write(emitter, value, &i) { + return false + } + } + spaces = true + } else if is_break(value, i) { + if !breaks && value[i] == '\n' { + if !put_break(emitter) { + return false + } + } + if !write_break(emitter, value, &i) { + return false + } + //emitter.indention = true + breaks = true + } else { + if breaks { + if !yaml_emitter_write_indent(emitter) { + return false + } + } + if value[i] == '\'' { + if !put(emitter, '\'') { + return false + } + } + if !write(emitter, value, &i) { + return false + } + emitter.indention = false + spaces = false + breaks = false + } + } + if !yaml_emitter_write_indicator(emitter, []byte{'\''}, false, false, false) { + return false + } + emitter.whitespace = false + emitter.indention = false + return true +} + +func yaml_emitter_write_double_quoted_scalar(emitter *yaml_emitter_t, value []byte, allow_breaks bool) bool { + spaces := false + if !yaml_emitter_write_indicator(emitter, []byte{'"'}, true, false, false) { + return false + } + + for i := 0; i < len(value); { + if !is_printable(value, i) || (!emitter.unicode && !is_ascii(value, i)) || + is_bom(value, i) || is_break(value, i) || + value[i] == '"' || value[i] == '\\' { + + octet := value[i] + + var w int + var v rune + switch { + case octet&0x80 == 0x00: + w, v = 1, rune(octet&0x7F) + case octet&0xE0 == 0xC0: + w, v = 2, rune(octet&0x1F) + case octet&0xF0 == 0xE0: + w, v = 3, rune(octet&0x0F) + case octet&0xF8 == 0xF0: + w, v = 4, rune(octet&0x07) + } + for k := 1; k < w; k++ { + octet = value[i+k] + v = (v << 6) + (rune(octet) & 0x3F) + } + i += w + + if !put(emitter, '\\') { + return false + } + + var ok bool + switch v { + case 0x00: + ok = put(emitter, '0') + case 0x07: + ok = put(emitter, 'a') + case 0x08: + ok = put(emitter, 'b') + case 0x09: + ok = put(emitter, 't') + case 0x0A: + ok = put(emitter, 'n') + case 0x0b: + ok = put(emitter, 'v') + case 0x0c: + ok = put(emitter, 'f') + case 0x0d: + ok = put(emitter, 'r') + case 0x1b: + ok = put(emitter, 'e') + case 0x22: + ok = put(emitter, '"') + case 0x5c: + ok = put(emitter, '\\') + case 0x85: + ok = put(emitter, 'N') + case 0xA0: + ok = put(emitter, '_') + case 0x2028: + ok = put(emitter, 'L') + case 0x2029: + ok = put(emitter, 'P') + default: + if v <= 0xFF { + ok = put(emitter, 'x') + w = 2 + } else if v <= 0xFFFF { + ok = put(emitter, 'u') + w = 4 + } else { + ok = put(emitter, 'U') + w = 8 + } + for k := (w - 1) * 4; ok && k >= 0; k -= 4 { + digit := byte((v >> uint(k)) & 0x0F) + if digit < 10 { + ok = put(emitter, digit+'0') + } else { + ok = put(emitter, digit+'A'-10) + } + } + } + if !ok { + return false + } + spaces = false + } else if is_space(value, i) { + if allow_breaks && !spaces && emitter.column > emitter.best_width && i > 0 && i < len(value)-1 { + if !yaml_emitter_write_indent(emitter) { + return false + } + if is_space(value, i+1) { + if !put(emitter, '\\') { + return false + } + } + i += width(value[i]) + } else if !write(emitter, value, &i) { + return false + } + spaces = true + } else { + if !write(emitter, value, &i) { + return false + } + spaces = false + } + } + if !yaml_emitter_write_indicator(emitter, []byte{'"'}, false, false, false) { + return false + } + emitter.whitespace = false + emitter.indention = false + return true +} + +func yaml_emitter_write_block_scalar_hints(emitter *yaml_emitter_t, value []byte) bool { + if is_space(value, 0) || is_break(value, 0) { + indent_hint := []byte{'0' + byte(emitter.best_indent)} + if !yaml_emitter_write_indicator(emitter, indent_hint, false, false, false) { + return false + } + } + + emitter.open_ended = false + + var chomp_hint [1]byte + if len(value) == 0 { + chomp_hint[0] = '-' + } else { + i := len(value) - 1 + for value[i]&0xC0 == 0x80 { + i-- + } + if !is_break(value, i) { + chomp_hint[0] = '-' + } else if i == 0 { + chomp_hint[0] = '+' + emitter.open_ended = true + } else { + i-- + for value[i]&0xC0 == 0x80 { + i-- + } + if is_break(value, i) { + chomp_hint[0] = '+' + emitter.open_ended = true + } + } + } + if chomp_hint[0] != 0 { + if !yaml_emitter_write_indicator(emitter, chomp_hint[:], false, false, false) { + return false + } + } + return true +} + +func yaml_emitter_write_literal_scalar(emitter *yaml_emitter_t, value []byte) bool { + if !yaml_emitter_write_indicator(emitter, []byte{'|'}, true, false, false) { + return false + } + if !yaml_emitter_write_block_scalar_hints(emitter, value) { + return false + } + if !yaml_emitter_process_line_comment(emitter) { + return false + } + //emitter.indention = true + emitter.whitespace = true + breaks := true + for i := 0; i < len(value); { + if is_break(value, i) { + if !write_break(emitter, value, &i) { + return false + } + //emitter.indention = true + breaks = true + } else { + if breaks { + if !yaml_emitter_write_indent(emitter) { + return false + } + } + if !write(emitter, value, &i) { + return false + } + emitter.indention = false + breaks = false + } + } + + return true +} + +func yaml_emitter_write_folded_scalar(emitter *yaml_emitter_t, value []byte) bool { + if !yaml_emitter_write_indicator(emitter, []byte{'>'}, true, false, false) { + return false + } + if !yaml_emitter_write_block_scalar_hints(emitter, value) { + return false + } + if !yaml_emitter_process_line_comment(emitter) { + return false + } + + //emitter.indention = true + emitter.whitespace = true + + breaks := true + leading_spaces := true + for i := 0; i < len(value); { + if is_break(value, i) { + if !breaks && !leading_spaces && value[i] == '\n' { + k := 0 + for is_break(value, k) { + k += width(value[k]) + } + if !is_blankz(value, k) { + if !put_break(emitter) { + return false + } + } + } + if !write_break(emitter, value, &i) { + return false + } + //emitter.indention = true + breaks = true + } else { + if breaks { + if !yaml_emitter_write_indent(emitter) { + return false + } + leading_spaces = is_blank(value, i) + } + if !breaks && is_space(value, i) && !is_space(value, i+1) && emitter.column > emitter.best_width { + if !yaml_emitter_write_indent(emitter) { + return false + } + i += width(value[i]) + } else { + if !write(emitter, value, &i) { + return false + } + } + emitter.indention = false + breaks = false + } + } + return true +} + +func yaml_emitter_write_comment(emitter *yaml_emitter_t, comment []byte) bool { + breaks := false + pound := false + for i := 0; i < len(comment); { + if is_break(comment, i) { + if !write_break(emitter, comment, &i) { + return false + } + //emitter.indention = true + breaks = true + pound = false + } else { + if breaks && !yaml_emitter_write_indent(emitter) { + return false + } + if !pound { + if comment[i] != '#' && (!put(emitter, '#') || !put(emitter, ' ')) { + return false + } + pound = true + } + if !write(emitter, comment, &i) { + return false + } + emitter.indention = false + breaks = false + } + } + if !breaks && !put_break(emitter) { + return false + } + + emitter.whitespace = true + //emitter.indention = true + return true +} diff --git a/vendor/gopkg.in/yaml.v3/encode.go b/vendor/gopkg.in/yaml.v3/encode.go new file mode 100644 index 000000000..de9e72a3e --- /dev/null +++ b/vendor/gopkg.in/yaml.v3/encode.go @@ -0,0 +1,577 @@ +// +// Copyright (c) 2011-2019 Canonical Ltd +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package yaml + +import ( + "encoding" + "fmt" + "io" + "reflect" + "regexp" + "sort" + "strconv" + "strings" + "time" + "unicode/utf8" +) + +type encoder struct { + emitter yaml_emitter_t + event yaml_event_t + out []byte + flow bool + indent int + doneInit bool +} + +func newEncoder() *encoder { + e := &encoder{} + yaml_emitter_initialize(&e.emitter) + yaml_emitter_set_output_string(&e.emitter, &e.out) + yaml_emitter_set_unicode(&e.emitter, true) + return e +} + +func newEncoderWithWriter(w io.Writer) *encoder { + e := &encoder{} + yaml_emitter_initialize(&e.emitter) + yaml_emitter_set_output_writer(&e.emitter, w) + yaml_emitter_set_unicode(&e.emitter, true) + return e +} + +func (e *encoder) init() { + if e.doneInit { + return + } + if e.indent == 0 { + e.indent = 4 + } + e.emitter.best_indent = e.indent + yaml_stream_start_event_initialize(&e.event, yaml_UTF8_ENCODING) + e.emit() + e.doneInit = true +} + +func (e *encoder) finish() { + e.emitter.open_ended = false + yaml_stream_end_event_initialize(&e.event) + e.emit() +} + +func (e *encoder) destroy() { + yaml_emitter_delete(&e.emitter) +} + +func (e *encoder) emit() { + // This will internally delete the e.event value. + e.must(yaml_emitter_emit(&e.emitter, &e.event)) +} + +func (e *encoder) must(ok bool) { + if !ok { + msg := e.emitter.problem + if msg == "" { + msg = "unknown problem generating YAML content" + } + failf("%s", msg) + } +} + +func (e *encoder) marshalDoc(tag string, in reflect.Value) { + e.init() + var node *Node + if in.IsValid() { + node, _ = in.Interface().(*Node) + } + if node != nil && node.Kind == DocumentNode { + e.nodev(in) + } else { + yaml_document_start_event_initialize(&e.event, nil, nil, true) + e.emit() + e.marshal(tag, in) + yaml_document_end_event_initialize(&e.event, true) + e.emit() + } +} + +func (e *encoder) marshal(tag string, in reflect.Value) { + tag = shortTag(tag) + if !in.IsValid() || in.Kind() == reflect.Ptr && in.IsNil() { + e.nilv() + return + } + iface := in.Interface() + switch value := iface.(type) { + case *Node: + e.nodev(in) + return + case Node: + if !in.CanAddr() { + var n = reflect.New(in.Type()).Elem() + n.Set(in) + in = n + } + e.nodev(in.Addr()) + return + case time.Time: + e.timev(tag, in) + return + case *time.Time: + e.timev(tag, in.Elem()) + return + case time.Duration: + e.stringv(tag, reflect.ValueOf(value.String())) + return + case Marshaler: + v, err := value.MarshalYAML() + if err != nil { + fail(err) + } + if v == nil { + e.nilv() + return + } + e.marshal(tag, reflect.ValueOf(v)) + return + case encoding.TextMarshaler: + text, err := value.MarshalText() + if err != nil { + fail(err) + } + in = reflect.ValueOf(string(text)) + case nil: + e.nilv() + return + } + switch in.Kind() { + case reflect.Interface: + e.marshal(tag, in.Elem()) + case reflect.Map: + e.mapv(tag, in) + case reflect.Ptr: + e.marshal(tag, in.Elem()) + case reflect.Struct: + e.structv(tag, in) + case reflect.Slice, reflect.Array: + e.slicev(tag, in) + case reflect.String: + e.stringv(tag, in) + case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64: + e.intv(tag, in) + case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr: + e.uintv(tag, in) + case reflect.Float32, reflect.Float64: + e.floatv(tag, in) + case reflect.Bool: + e.boolv(tag, in) + default: + panic("cannot marshal type: " + in.Type().String()) + } +} + +func (e *encoder) mapv(tag string, in reflect.Value) { + e.mappingv(tag, func() { + keys := keyList(in.MapKeys()) + sort.Sort(keys) + for _, k := range keys { + e.marshal("", k) + e.marshal("", in.MapIndex(k)) + } + }) +} + +func (e *encoder) fieldByIndex(v reflect.Value, index []int) (field reflect.Value) { + for _, num := range index { + for { + if v.Kind() == reflect.Ptr { + if v.IsNil() { + return reflect.Value{} + } + v = v.Elem() + continue + } + break + } + v = v.Field(num) + } + return v +} + +func (e *encoder) structv(tag string, in reflect.Value) { + sinfo, err := getStructInfo(in.Type()) + if err != nil { + panic(err) + } + e.mappingv(tag, func() { + for _, info := range sinfo.FieldsList { + var value reflect.Value + if info.Inline == nil { + value = in.Field(info.Num) + } else { + value = e.fieldByIndex(in, info.Inline) + if !value.IsValid() { + continue + } + } + if info.OmitEmpty && isZero(value) { + continue + } + e.marshal("", reflect.ValueOf(info.Key)) + e.flow = info.Flow + e.marshal("", value) + } + if sinfo.InlineMap >= 0 { + m := in.Field(sinfo.InlineMap) + if m.Len() > 0 { + e.flow = false + keys := keyList(m.MapKeys()) + sort.Sort(keys) + for _, k := range keys { + if _, found := sinfo.FieldsMap[k.String()]; found { + panic(fmt.Sprintf("cannot have key %q in inlined map: conflicts with struct field", k.String())) + } + e.marshal("", k) + e.flow = false + e.marshal("", m.MapIndex(k)) + } + } + } + }) +} + +func (e *encoder) mappingv(tag string, f func()) { + implicit := tag == "" + style := yaml_BLOCK_MAPPING_STYLE + if e.flow { + e.flow = false + style = yaml_FLOW_MAPPING_STYLE + } + yaml_mapping_start_event_initialize(&e.event, nil, []byte(tag), implicit, style) + e.emit() + f() + yaml_mapping_end_event_initialize(&e.event) + e.emit() +} + +func (e *encoder) slicev(tag string, in reflect.Value) { + implicit := tag == "" + style := yaml_BLOCK_SEQUENCE_STYLE + if e.flow { + e.flow = false + style = yaml_FLOW_SEQUENCE_STYLE + } + e.must(yaml_sequence_start_event_initialize(&e.event, nil, []byte(tag), implicit, style)) + e.emit() + n := in.Len() + for i := 0; i < n; i++ { + e.marshal("", in.Index(i)) + } + e.must(yaml_sequence_end_event_initialize(&e.event)) + e.emit() +} + +// isBase60 returns whether s is in base 60 notation as defined in YAML 1.1. +// +// The base 60 float notation in YAML 1.1 is a terrible idea and is unsupported +// in YAML 1.2 and by this package, but these should be marshalled quoted for +// the time being for compatibility with other parsers. +func isBase60Float(s string) (result bool) { + // Fast path. + if s == "" { + return false + } + c := s[0] + if !(c == '+' || c == '-' || c >= '0' && c <= '9') || strings.IndexByte(s, ':') < 0 { + return false + } + // Do the full match. + return base60float.MatchString(s) +} + +// From http://yaml.org/type/float.html, except the regular expression there +// is bogus. In practice parsers do not enforce the "\.[0-9_]*" suffix. +var base60float = regexp.MustCompile(`^[-+]?[0-9][0-9_]*(?::[0-5]?[0-9])+(?:\.[0-9_]*)?$`) + +// isOldBool returns whether s is bool notation as defined in YAML 1.1. +// +// We continue to force strings that YAML 1.1 would interpret as booleans to be +// rendered as quotes strings so that the marshalled output valid for YAML 1.1 +// parsing. +func isOldBool(s string) (result bool) { + switch s { + case "y", "Y", "yes", "Yes", "YES", "on", "On", "ON", + "n", "N", "no", "No", "NO", "off", "Off", "OFF": + return true + default: + return false + } +} + +func (e *encoder) stringv(tag string, in reflect.Value) { + var style yaml_scalar_style_t + s := in.String() + canUsePlain := true + switch { + case !utf8.ValidString(s): + if tag == binaryTag { + failf("explicitly tagged !!binary data must be base64-encoded") + } + if tag != "" { + failf("cannot marshal invalid UTF-8 data as %s", shortTag(tag)) + } + // It can't be encoded directly as YAML so use a binary tag + // and encode it as base64. + tag = binaryTag + s = encodeBase64(s) + case tag == "": + // Check to see if it would resolve to a specific + // tag when encoded unquoted. If it doesn't, + // there's no need to quote it. + rtag, _ := resolve("", s) + canUsePlain = rtag == strTag && !(isBase60Float(s) || isOldBool(s)) + } + // Note: it's possible for user code to emit invalid YAML + // if they explicitly specify a tag and a string containing + // text that's incompatible with that tag. + switch { + case strings.Contains(s, "\n"): + if e.flow { + style = yaml_DOUBLE_QUOTED_SCALAR_STYLE + } else { + style = yaml_LITERAL_SCALAR_STYLE + } + case canUsePlain: + style = yaml_PLAIN_SCALAR_STYLE + default: + style = yaml_DOUBLE_QUOTED_SCALAR_STYLE + } + e.emitScalar(s, "", tag, style, nil, nil, nil, nil) +} + +func (e *encoder) boolv(tag string, in reflect.Value) { + var s string + if in.Bool() { + s = "true" + } else { + s = "false" + } + e.emitScalar(s, "", tag, yaml_PLAIN_SCALAR_STYLE, nil, nil, nil, nil) +} + +func (e *encoder) intv(tag string, in reflect.Value) { + s := strconv.FormatInt(in.Int(), 10) + e.emitScalar(s, "", tag, yaml_PLAIN_SCALAR_STYLE, nil, nil, nil, nil) +} + +func (e *encoder) uintv(tag string, in reflect.Value) { + s := strconv.FormatUint(in.Uint(), 10) + e.emitScalar(s, "", tag, yaml_PLAIN_SCALAR_STYLE, nil, nil, nil, nil) +} + +func (e *encoder) timev(tag string, in reflect.Value) { + t := in.Interface().(time.Time) + s := t.Format(time.RFC3339Nano) + e.emitScalar(s, "", tag, yaml_PLAIN_SCALAR_STYLE, nil, nil, nil, nil) +} + +func (e *encoder) floatv(tag string, in reflect.Value) { + // Issue #352: When formatting, use the precision of the underlying value + precision := 64 + if in.Kind() == reflect.Float32 { + precision = 32 + } + + s := strconv.FormatFloat(in.Float(), 'g', -1, precision) + switch s { + case "+Inf": + s = ".inf" + case "-Inf": + s = "-.inf" + case "NaN": + s = ".nan" + } + e.emitScalar(s, "", tag, yaml_PLAIN_SCALAR_STYLE, nil, nil, nil, nil) +} + +func (e *encoder) nilv() { + e.emitScalar("null", "", "", yaml_PLAIN_SCALAR_STYLE, nil, nil, nil, nil) +} + +func (e *encoder) emitScalar(value, anchor, tag string, style yaml_scalar_style_t, head, line, foot, tail []byte) { + // TODO Kill this function. Replace all initialize calls by their underlining Go literals. + implicit := tag == "" + if !implicit { + tag = longTag(tag) + } + e.must(yaml_scalar_event_initialize(&e.event, []byte(anchor), []byte(tag), []byte(value), implicit, implicit, style)) + e.event.head_comment = head + e.event.line_comment = line + e.event.foot_comment = foot + e.event.tail_comment = tail + e.emit() +} + +func (e *encoder) nodev(in reflect.Value) { + e.node(in.Interface().(*Node), "") +} + +func (e *encoder) node(node *Node, tail string) { + // Zero nodes behave as nil. + if node.Kind == 0 && node.IsZero() { + e.nilv() + return + } + + // If the tag was not explicitly requested, and dropping it won't change the + // implicit tag of the value, don't include it in the presentation. + var tag = node.Tag + var stag = shortTag(tag) + var forceQuoting bool + if tag != "" && node.Style&TaggedStyle == 0 { + if node.Kind == ScalarNode { + if stag == strTag && node.Style&(SingleQuotedStyle|DoubleQuotedStyle|LiteralStyle|FoldedStyle) != 0 { + tag = "" + } else { + rtag, _ := resolve("", node.Value) + if rtag == stag { + tag = "" + } else if stag == strTag { + tag = "" + forceQuoting = true + } + } + } else { + var rtag string + switch node.Kind { + case MappingNode: + rtag = mapTag + case SequenceNode: + rtag = seqTag + } + if rtag == stag { + tag = "" + } + } + } + + switch node.Kind { + case DocumentNode: + yaml_document_start_event_initialize(&e.event, nil, nil, true) + e.event.head_comment = []byte(node.HeadComment) + e.emit() + for _, node := range node.Content { + e.node(node, "") + } + yaml_document_end_event_initialize(&e.event, true) + e.event.foot_comment = []byte(node.FootComment) + e.emit() + + case SequenceNode: + style := yaml_BLOCK_SEQUENCE_STYLE + if node.Style&FlowStyle != 0 { + style = yaml_FLOW_SEQUENCE_STYLE + } + e.must(yaml_sequence_start_event_initialize(&e.event, []byte(node.Anchor), []byte(longTag(tag)), tag == "", style)) + e.event.head_comment = []byte(node.HeadComment) + e.emit() + for _, node := range node.Content { + e.node(node, "") + } + e.must(yaml_sequence_end_event_initialize(&e.event)) + e.event.line_comment = []byte(node.LineComment) + e.event.foot_comment = []byte(node.FootComment) + e.emit() + + case MappingNode: + style := yaml_BLOCK_MAPPING_STYLE + if node.Style&FlowStyle != 0 { + style = yaml_FLOW_MAPPING_STYLE + } + yaml_mapping_start_event_initialize(&e.event, []byte(node.Anchor), []byte(longTag(tag)), tag == "", style) + e.event.tail_comment = []byte(tail) + e.event.head_comment = []byte(node.HeadComment) + e.emit() + + // The tail logic below moves the foot comment of prior keys to the following key, + // since the value for each key may be a nested structure and the foot needs to be + // processed only the entirety of the value is streamed. The last tail is processed + // with the mapping end event. + var tail string + for i := 0; i+1 < len(node.Content); i += 2 { + k := node.Content[i] + foot := k.FootComment + if foot != "" { + kopy := *k + kopy.FootComment = "" + k = &kopy + } + e.node(k, tail) + tail = foot + + v := node.Content[i+1] + e.node(v, "") + } + + yaml_mapping_end_event_initialize(&e.event) + e.event.tail_comment = []byte(tail) + e.event.line_comment = []byte(node.LineComment) + e.event.foot_comment = []byte(node.FootComment) + e.emit() + + case AliasNode: + yaml_alias_event_initialize(&e.event, []byte(node.Value)) + e.event.head_comment = []byte(node.HeadComment) + e.event.line_comment = []byte(node.LineComment) + e.event.foot_comment = []byte(node.FootComment) + e.emit() + + case ScalarNode: + value := node.Value + if !utf8.ValidString(value) { + if stag == binaryTag { + failf("explicitly tagged !!binary data must be base64-encoded") + } + if stag != "" { + failf("cannot marshal invalid UTF-8 data as %s", stag) + } + // It can't be encoded directly as YAML so use a binary tag + // and encode it as base64. + tag = binaryTag + value = encodeBase64(value) + } + + style := yaml_PLAIN_SCALAR_STYLE + switch { + case node.Style&DoubleQuotedStyle != 0: + style = yaml_DOUBLE_QUOTED_SCALAR_STYLE + case node.Style&SingleQuotedStyle != 0: + style = yaml_SINGLE_QUOTED_SCALAR_STYLE + case node.Style&LiteralStyle != 0: + style = yaml_LITERAL_SCALAR_STYLE + case node.Style&FoldedStyle != 0: + style = yaml_FOLDED_SCALAR_STYLE + case strings.Contains(value, "\n"): + style = yaml_LITERAL_SCALAR_STYLE + case forceQuoting: + style = yaml_DOUBLE_QUOTED_SCALAR_STYLE + } + + e.emitScalar(value, node.Anchor, tag, style, []byte(node.HeadComment), []byte(node.LineComment), []byte(node.FootComment), []byte(tail)) + default: + failf("cannot encode node with unknown kind %d", node.Kind) + } +} diff --git a/vendor/gopkg.in/yaml.v3/go.mod b/vendor/gopkg.in/yaml.v3/go.mod new file mode 100644 index 000000000..f407ea321 --- /dev/null +++ b/vendor/gopkg.in/yaml.v3/go.mod @@ -0,0 +1,5 @@ +module "gopkg.in/yaml.v3" + +require ( + "gopkg.in/check.v1" v0.0.0-20161208181325-20d25e280405 +) diff --git a/vendor/gopkg.in/yaml.v3/parserc.go b/vendor/gopkg.in/yaml.v3/parserc.go new file mode 100644 index 000000000..268558a0d --- /dev/null +++ b/vendor/gopkg.in/yaml.v3/parserc.go @@ -0,0 +1,1258 @@ +// +// Copyright (c) 2011-2019 Canonical Ltd +// Copyright (c) 2006-2010 Kirill Simonov +// +// Permission is hereby granted, free of charge, to any person obtaining a copy of +// this software and associated documentation files (the "Software"), to deal in +// the Software without restriction, including without limitation the rights to +// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies +// of the Software, and to permit persons to whom the Software is furnished to do +// so, subject to the following conditions: +// +// The above copyright notice and this permission notice shall be included in all +// copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +// SOFTWARE. + +package yaml + +import ( + "bytes" +) + +// The parser implements the following grammar: +// +// stream ::= STREAM-START implicit_document? explicit_document* STREAM-END +// implicit_document ::= block_node DOCUMENT-END* +// explicit_document ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END* +// block_node_or_indentless_sequence ::= +// ALIAS +// | properties (block_content | indentless_block_sequence)? +// | block_content +// | indentless_block_sequence +// block_node ::= ALIAS +// | properties block_content? +// | block_content +// flow_node ::= ALIAS +// | properties flow_content? +// | flow_content +// properties ::= TAG ANCHOR? | ANCHOR TAG? +// block_content ::= block_collection | flow_collection | SCALAR +// flow_content ::= flow_collection | SCALAR +// block_collection ::= block_sequence | block_mapping +// flow_collection ::= flow_sequence | flow_mapping +// block_sequence ::= BLOCK-SEQUENCE-START (BLOCK-ENTRY block_node?)* BLOCK-END +// indentless_sequence ::= (BLOCK-ENTRY block_node?)+ +// block_mapping ::= BLOCK-MAPPING_START +// ((KEY block_node_or_indentless_sequence?)? +// (VALUE block_node_or_indentless_sequence?)?)* +// BLOCK-END +// flow_sequence ::= FLOW-SEQUENCE-START +// (flow_sequence_entry FLOW-ENTRY)* +// flow_sequence_entry? +// FLOW-SEQUENCE-END +// flow_sequence_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)? +// flow_mapping ::= FLOW-MAPPING-START +// (flow_mapping_entry FLOW-ENTRY)* +// flow_mapping_entry? +// FLOW-MAPPING-END +// flow_mapping_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)? + +// Peek the next token in the token queue. +func peek_token(parser *yaml_parser_t) *yaml_token_t { + if parser.token_available || yaml_parser_fetch_more_tokens(parser) { + token := &parser.tokens[parser.tokens_head] + yaml_parser_unfold_comments(parser, token) + return token + } + return nil +} + +// yaml_parser_unfold_comments walks through the comments queue and joins all +// comments behind the position of the provided token into the respective +// top-level comment slices in the parser. +func yaml_parser_unfold_comments(parser *yaml_parser_t, token *yaml_token_t) { + for parser.comments_head < len(parser.comments) && token.start_mark.index >= parser.comments[parser.comments_head].token_mark.index { + comment := &parser.comments[parser.comments_head] + if len(comment.head) > 0 { + if token.typ == yaml_BLOCK_END_TOKEN { + // No heads on ends, so keep comment.head for a follow up token. + break + } + if len(parser.head_comment) > 0 { + parser.head_comment = append(parser.head_comment, '\n') + } + parser.head_comment = append(parser.head_comment, comment.head...) + } + if len(comment.foot) > 0 { + if len(parser.foot_comment) > 0 { + parser.foot_comment = append(parser.foot_comment, '\n') + } + parser.foot_comment = append(parser.foot_comment, comment.foot...) + } + if len(comment.line) > 0 { + if len(parser.line_comment) > 0 { + parser.line_comment = append(parser.line_comment, '\n') + } + parser.line_comment = append(parser.line_comment, comment.line...) + } + *comment = yaml_comment_t{} + parser.comments_head++ + } +} + +// Remove the next token from the queue (must be called after peek_token). +func skip_token(parser *yaml_parser_t) { + parser.token_available = false + parser.tokens_parsed++ + parser.stream_end_produced = parser.tokens[parser.tokens_head].typ == yaml_STREAM_END_TOKEN + parser.tokens_head++ +} + +// Get the next event. +func yaml_parser_parse(parser *yaml_parser_t, event *yaml_event_t) bool { + // Erase the event object. + *event = yaml_event_t{} + + // No events after the end of the stream or error. + if parser.stream_end_produced || parser.error != yaml_NO_ERROR || parser.state == yaml_PARSE_END_STATE { + return true + } + + // Generate the next event. + return yaml_parser_state_machine(parser, event) +} + +// Set parser error. +func yaml_parser_set_parser_error(parser *yaml_parser_t, problem string, problem_mark yaml_mark_t) bool { + parser.error = yaml_PARSER_ERROR + parser.problem = problem + parser.problem_mark = problem_mark + return false +} + +func yaml_parser_set_parser_error_context(parser *yaml_parser_t, context string, context_mark yaml_mark_t, problem string, problem_mark yaml_mark_t) bool { + parser.error = yaml_PARSER_ERROR + parser.context = context + parser.context_mark = context_mark + parser.problem = problem + parser.problem_mark = problem_mark + return false +} + +// State dispatcher. +func yaml_parser_state_machine(parser *yaml_parser_t, event *yaml_event_t) bool { + //trace("yaml_parser_state_machine", "state:", parser.state.String()) + + switch parser.state { + case yaml_PARSE_STREAM_START_STATE: + return yaml_parser_parse_stream_start(parser, event) + + case yaml_PARSE_IMPLICIT_DOCUMENT_START_STATE: + return yaml_parser_parse_document_start(parser, event, true) + + case yaml_PARSE_DOCUMENT_START_STATE: + return yaml_parser_parse_document_start(parser, event, false) + + case yaml_PARSE_DOCUMENT_CONTENT_STATE: + return yaml_parser_parse_document_content(parser, event) + + case yaml_PARSE_DOCUMENT_END_STATE: + return yaml_parser_parse_document_end(parser, event) + + case yaml_PARSE_BLOCK_NODE_STATE: + return yaml_parser_parse_node(parser, event, true, false) + + case yaml_PARSE_BLOCK_NODE_OR_INDENTLESS_SEQUENCE_STATE: + return yaml_parser_parse_node(parser, event, true, true) + + case yaml_PARSE_FLOW_NODE_STATE: + return yaml_parser_parse_node(parser, event, false, false) + + case yaml_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE: + return yaml_parser_parse_block_sequence_entry(parser, event, true) + + case yaml_PARSE_BLOCK_SEQUENCE_ENTRY_STATE: + return yaml_parser_parse_block_sequence_entry(parser, event, false) + + case yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE: + return yaml_parser_parse_indentless_sequence_entry(parser, event) + + case yaml_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE: + return yaml_parser_parse_block_mapping_key(parser, event, true) + + case yaml_PARSE_BLOCK_MAPPING_KEY_STATE: + return yaml_parser_parse_block_mapping_key(parser, event, false) + + case yaml_PARSE_BLOCK_MAPPING_VALUE_STATE: + return yaml_parser_parse_block_mapping_value(parser, event) + + case yaml_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE: + return yaml_parser_parse_flow_sequence_entry(parser, event, true) + + case yaml_PARSE_FLOW_SEQUENCE_ENTRY_STATE: + return yaml_parser_parse_flow_sequence_entry(parser, event, false) + + case yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE: + return yaml_parser_parse_flow_sequence_entry_mapping_key(parser, event) + + case yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE: + return yaml_parser_parse_flow_sequence_entry_mapping_value(parser, event) + + case yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE: + return yaml_parser_parse_flow_sequence_entry_mapping_end(parser, event) + + case yaml_PARSE_FLOW_MAPPING_FIRST_KEY_STATE: + return yaml_parser_parse_flow_mapping_key(parser, event, true) + + case yaml_PARSE_FLOW_MAPPING_KEY_STATE: + return yaml_parser_parse_flow_mapping_key(parser, event, false) + + case yaml_PARSE_FLOW_MAPPING_VALUE_STATE: + return yaml_parser_parse_flow_mapping_value(parser, event, false) + + case yaml_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE: + return yaml_parser_parse_flow_mapping_value(parser, event, true) + + default: + panic("invalid parser state") + } +} + +// Parse the production: +// stream ::= STREAM-START implicit_document? explicit_document* STREAM-END +// ************ +func yaml_parser_parse_stream_start(parser *yaml_parser_t, event *yaml_event_t) bool { + token := peek_token(parser) + if token == nil { + return false + } + if token.typ != yaml_STREAM_START_TOKEN { + return yaml_parser_set_parser_error(parser, "did not find expected ", token.start_mark) + } + parser.state = yaml_PARSE_IMPLICIT_DOCUMENT_START_STATE + *event = yaml_event_t{ + typ: yaml_STREAM_START_EVENT, + start_mark: token.start_mark, + end_mark: token.end_mark, + encoding: token.encoding, + } + skip_token(parser) + return true +} + +// Parse the productions: +// implicit_document ::= block_node DOCUMENT-END* +// * +// explicit_document ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END* +// ************************* +func yaml_parser_parse_document_start(parser *yaml_parser_t, event *yaml_event_t, implicit bool) bool { + + token := peek_token(parser) + if token == nil { + return false + } + + // Parse extra document end indicators. + if !implicit { + for token.typ == yaml_DOCUMENT_END_TOKEN { + skip_token(parser) + token = peek_token(parser) + if token == nil { + return false + } + } + } + + if implicit && token.typ != yaml_VERSION_DIRECTIVE_TOKEN && + token.typ != yaml_TAG_DIRECTIVE_TOKEN && + token.typ != yaml_DOCUMENT_START_TOKEN && + token.typ != yaml_STREAM_END_TOKEN { + // Parse an implicit document. + if !yaml_parser_process_directives(parser, nil, nil) { + return false + } + parser.states = append(parser.states, yaml_PARSE_DOCUMENT_END_STATE) + parser.state = yaml_PARSE_BLOCK_NODE_STATE + + var head_comment []byte + if len(parser.head_comment) > 0 { + // [Go] Scan the header comment backwards, and if an empty line is found, break + // the header so the part before the last empty line goes into the + // document header, while the bottom of it goes into a follow up event. + for i := len(parser.head_comment) - 1; i > 0; i-- { + if parser.head_comment[i] == '\n' { + if i == len(parser.head_comment)-1 { + head_comment = parser.head_comment[:i] + parser.head_comment = parser.head_comment[i+1:] + break + } else if parser.head_comment[i-1] == '\n' { + head_comment = parser.head_comment[:i-1] + parser.head_comment = parser.head_comment[i+1:] + break + } + } + } + } + + *event = yaml_event_t{ + typ: yaml_DOCUMENT_START_EVENT, + start_mark: token.start_mark, + end_mark: token.end_mark, + + head_comment: head_comment, + } + + } else if token.typ != yaml_STREAM_END_TOKEN { + // Parse an explicit document. + var version_directive *yaml_version_directive_t + var tag_directives []yaml_tag_directive_t + start_mark := token.start_mark + if !yaml_parser_process_directives(parser, &version_directive, &tag_directives) { + return false + } + token = peek_token(parser) + if token == nil { + return false + } + if token.typ != yaml_DOCUMENT_START_TOKEN { + yaml_parser_set_parser_error(parser, + "did not find expected ", token.start_mark) + return false + } + parser.states = append(parser.states, yaml_PARSE_DOCUMENT_END_STATE) + parser.state = yaml_PARSE_DOCUMENT_CONTENT_STATE + end_mark := token.end_mark + + *event = yaml_event_t{ + typ: yaml_DOCUMENT_START_EVENT, + start_mark: start_mark, + end_mark: end_mark, + version_directive: version_directive, + tag_directives: tag_directives, + implicit: false, + } + skip_token(parser) + + } else { + // Parse the stream end. + parser.state = yaml_PARSE_END_STATE + *event = yaml_event_t{ + typ: yaml_STREAM_END_EVENT, + start_mark: token.start_mark, + end_mark: token.end_mark, + } + skip_token(parser) + } + + return true +} + +// Parse the productions: +// explicit_document ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END* +// *********** +// +func yaml_parser_parse_document_content(parser *yaml_parser_t, event *yaml_event_t) bool { + token := peek_token(parser) + if token == nil { + return false + } + + if token.typ == yaml_VERSION_DIRECTIVE_TOKEN || + token.typ == yaml_TAG_DIRECTIVE_TOKEN || + token.typ == yaml_DOCUMENT_START_TOKEN || + token.typ == yaml_DOCUMENT_END_TOKEN || + token.typ == yaml_STREAM_END_TOKEN { + parser.state = parser.states[len(parser.states)-1] + parser.states = parser.states[:len(parser.states)-1] + return yaml_parser_process_empty_scalar(parser, event, + token.start_mark) + } + return yaml_parser_parse_node(parser, event, true, false) +} + +// Parse the productions: +// implicit_document ::= block_node DOCUMENT-END* +// ************* +// explicit_document ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END* +// +func yaml_parser_parse_document_end(parser *yaml_parser_t, event *yaml_event_t) bool { + token := peek_token(parser) + if token == nil { + return false + } + + start_mark := token.start_mark + end_mark := token.start_mark + + implicit := true + if token.typ == yaml_DOCUMENT_END_TOKEN { + end_mark = token.end_mark + skip_token(parser) + implicit = false + } + + parser.tag_directives = parser.tag_directives[:0] + + parser.state = yaml_PARSE_DOCUMENT_START_STATE + *event = yaml_event_t{ + typ: yaml_DOCUMENT_END_EVENT, + start_mark: start_mark, + end_mark: end_mark, + implicit: implicit, + } + yaml_parser_set_event_comments(parser, event) + if len(event.head_comment) > 0 && len(event.foot_comment) == 0 { + event.foot_comment = event.head_comment + event.head_comment = nil + } + return true +} + +func yaml_parser_set_event_comments(parser *yaml_parser_t, event *yaml_event_t) { + event.head_comment = parser.head_comment + event.line_comment = parser.line_comment + event.foot_comment = parser.foot_comment + parser.head_comment = nil + parser.line_comment = nil + parser.foot_comment = nil + parser.tail_comment = nil + parser.stem_comment = nil +} + +// Parse the productions: +// block_node_or_indentless_sequence ::= +// ALIAS +// ***** +// | properties (block_content | indentless_block_sequence)? +// ********** * +// | block_content | indentless_block_sequence +// * +// block_node ::= ALIAS +// ***** +// | properties block_content? +// ********** * +// | block_content +// * +// flow_node ::= ALIAS +// ***** +// | properties flow_content? +// ********** * +// | flow_content +// * +// properties ::= TAG ANCHOR? | ANCHOR TAG? +// ************************* +// block_content ::= block_collection | flow_collection | SCALAR +// ****** +// flow_content ::= flow_collection | SCALAR +// ****** +func yaml_parser_parse_node(parser *yaml_parser_t, event *yaml_event_t, block, indentless_sequence bool) bool { + //defer trace("yaml_parser_parse_node", "block:", block, "indentless_sequence:", indentless_sequence)() + + token := peek_token(parser) + if token == nil { + return false + } + + if token.typ == yaml_ALIAS_TOKEN { + parser.state = parser.states[len(parser.states)-1] + parser.states = parser.states[:len(parser.states)-1] + *event = yaml_event_t{ + typ: yaml_ALIAS_EVENT, + start_mark: token.start_mark, + end_mark: token.end_mark, + anchor: token.value, + } + yaml_parser_set_event_comments(parser, event) + skip_token(parser) + return true + } + + start_mark := token.start_mark + end_mark := token.start_mark + + var tag_token bool + var tag_handle, tag_suffix, anchor []byte + var tag_mark yaml_mark_t + if token.typ == yaml_ANCHOR_TOKEN { + anchor = token.value + start_mark = token.start_mark + end_mark = token.end_mark + skip_token(parser) + token = peek_token(parser) + if token == nil { + return false + } + if token.typ == yaml_TAG_TOKEN { + tag_token = true + tag_handle = token.value + tag_suffix = token.suffix + tag_mark = token.start_mark + end_mark = token.end_mark + skip_token(parser) + token = peek_token(parser) + if token == nil { + return false + } + } + } else if token.typ == yaml_TAG_TOKEN { + tag_token = true + tag_handle = token.value + tag_suffix = token.suffix + start_mark = token.start_mark + tag_mark = token.start_mark + end_mark = token.end_mark + skip_token(parser) + token = peek_token(parser) + if token == nil { + return false + } + if token.typ == yaml_ANCHOR_TOKEN { + anchor = token.value + end_mark = token.end_mark + skip_token(parser) + token = peek_token(parser) + if token == nil { + return false + } + } + } + + var tag []byte + if tag_token { + if len(tag_handle) == 0 { + tag = tag_suffix + tag_suffix = nil + } else { + for i := range parser.tag_directives { + if bytes.Equal(parser.tag_directives[i].handle, tag_handle) { + tag = append([]byte(nil), parser.tag_directives[i].prefix...) + tag = append(tag, tag_suffix...) + break + } + } + if len(tag) == 0 { + yaml_parser_set_parser_error_context(parser, + "while parsing a node", start_mark, + "found undefined tag handle", tag_mark) + return false + } + } + } + + implicit := len(tag) == 0 + if indentless_sequence && token.typ == yaml_BLOCK_ENTRY_TOKEN { + end_mark = token.end_mark + parser.state = yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE + *event = yaml_event_t{ + typ: yaml_SEQUENCE_START_EVENT, + start_mark: start_mark, + end_mark: end_mark, + anchor: anchor, + tag: tag, + implicit: implicit, + style: yaml_style_t(yaml_BLOCK_SEQUENCE_STYLE), + } + return true + } + if token.typ == yaml_SCALAR_TOKEN { + var plain_implicit, quoted_implicit bool + end_mark = token.end_mark + if (len(tag) == 0 && token.style == yaml_PLAIN_SCALAR_STYLE) || (len(tag) == 1 && tag[0] == '!') { + plain_implicit = true + } else if len(tag) == 0 { + quoted_implicit = true + } + parser.state = parser.states[len(parser.states)-1] + parser.states = parser.states[:len(parser.states)-1] + + *event = yaml_event_t{ + typ: yaml_SCALAR_EVENT, + start_mark: start_mark, + end_mark: end_mark, + anchor: anchor, + tag: tag, + value: token.value, + implicit: plain_implicit, + quoted_implicit: quoted_implicit, + style: yaml_style_t(token.style), + } + yaml_parser_set_event_comments(parser, event) + skip_token(parser) + return true + } + if token.typ == yaml_FLOW_SEQUENCE_START_TOKEN { + // [Go] Some of the events below can be merged as they differ only on style. + end_mark = token.end_mark + parser.state = yaml_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE + *event = yaml_event_t{ + typ: yaml_SEQUENCE_START_EVENT, + start_mark: start_mark, + end_mark: end_mark, + anchor: anchor, + tag: tag, + implicit: implicit, + style: yaml_style_t(yaml_FLOW_SEQUENCE_STYLE), + } + yaml_parser_set_event_comments(parser, event) + return true + } + if token.typ == yaml_FLOW_MAPPING_START_TOKEN { + end_mark = token.end_mark + parser.state = yaml_PARSE_FLOW_MAPPING_FIRST_KEY_STATE + *event = yaml_event_t{ + typ: yaml_MAPPING_START_EVENT, + start_mark: start_mark, + end_mark: end_mark, + anchor: anchor, + tag: tag, + implicit: implicit, + style: yaml_style_t(yaml_FLOW_MAPPING_STYLE), + } + yaml_parser_set_event_comments(parser, event) + return true + } + if block && token.typ == yaml_BLOCK_SEQUENCE_START_TOKEN { + end_mark = token.end_mark + parser.state = yaml_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE + *event = yaml_event_t{ + typ: yaml_SEQUENCE_START_EVENT, + start_mark: start_mark, + end_mark: end_mark, + anchor: anchor, + tag: tag, + implicit: implicit, + style: yaml_style_t(yaml_BLOCK_SEQUENCE_STYLE), + } + if parser.stem_comment != nil { + event.head_comment = parser.stem_comment + parser.stem_comment = nil + } + return true + } + if block && token.typ == yaml_BLOCK_MAPPING_START_TOKEN { + end_mark = token.end_mark + parser.state = yaml_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE + *event = yaml_event_t{ + typ: yaml_MAPPING_START_EVENT, + start_mark: start_mark, + end_mark: end_mark, + anchor: anchor, + tag: tag, + implicit: implicit, + style: yaml_style_t(yaml_BLOCK_MAPPING_STYLE), + } + if parser.stem_comment != nil { + event.head_comment = parser.stem_comment + parser.stem_comment = nil + } + return true + } + if len(anchor) > 0 || len(tag) > 0 { + parser.state = parser.states[len(parser.states)-1] + parser.states = parser.states[:len(parser.states)-1] + + *event = yaml_event_t{ + typ: yaml_SCALAR_EVENT, + start_mark: start_mark, + end_mark: end_mark, + anchor: anchor, + tag: tag, + implicit: implicit, + quoted_implicit: false, + style: yaml_style_t(yaml_PLAIN_SCALAR_STYLE), + } + return true + } + + context := "while parsing a flow node" + if block { + context = "while parsing a block node" + } + yaml_parser_set_parser_error_context(parser, context, start_mark, + "did not find expected node content", token.start_mark) + return false +} + +// Parse the productions: +// block_sequence ::= BLOCK-SEQUENCE-START (BLOCK-ENTRY block_node?)* BLOCK-END +// ******************** *********** * ********* +// +func yaml_parser_parse_block_sequence_entry(parser *yaml_parser_t, event *yaml_event_t, first bool) bool { + if first { + token := peek_token(parser) + if token == nil { + return false + } + parser.marks = append(parser.marks, token.start_mark) + skip_token(parser) + } + + token := peek_token(parser) + if token == nil { + return false + } + + if token.typ == yaml_BLOCK_ENTRY_TOKEN { + mark := token.end_mark + prior_head_len := len(parser.head_comment) + skip_token(parser) + yaml_parser_split_stem_comment(parser, prior_head_len) + token = peek_token(parser) + if token == nil { + return false + } + if token.typ != yaml_BLOCK_ENTRY_TOKEN && token.typ != yaml_BLOCK_END_TOKEN { + parser.states = append(parser.states, yaml_PARSE_BLOCK_SEQUENCE_ENTRY_STATE) + return yaml_parser_parse_node(parser, event, true, false) + } else { + parser.state = yaml_PARSE_BLOCK_SEQUENCE_ENTRY_STATE + return yaml_parser_process_empty_scalar(parser, event, mark) + } + } + if token.typ == yaml_BLOCK_END_TOKEN { + parser.state = parser.states[len(parser.states)-1] + parser.states = parser.states[:len(parser.states)-1] + parser.marks = parser.marks[:len(parser.marks)-1] + + *event = yaml_event_t{ + typ: yaml_SEQUENCE_END_EVENT, + start_mark: token.start_mark, + end_mark: token.end_mark, + } + + skip_token(parser) + return true + } + + context_mark := parser.marks[len(parser.marks)-1] + parser.marks = parser.marks[:len(parser.marks)-1] + return yaml_parser_set_parser_error_context(parser, + "while parsing a block collection", context_mark, + "did not find expected '-' indicator", token.start_mark) +} + +// Parse the productions: +// indentless_sequence ::= (BLOCK-ENTRY block_node?)+ +// *********** * +func yaml_parser_parse_indentless_sequence_entry(parser *yaml_parser_t, event *yaml_event_t) bool { + token := peek_token(parser) + if token == nil { + return false + } + + if token.typ == yaml_BLOCK_ENTRY_TOKEN { + mark := token.end_mark + prior_head_len := len(parser.head_comment) + skip_token(parser) + yaml_parser_split_stem_comment(parser, prior_head_len) + token = peek_token(parser) + if token == nil { + return false + } + if token.typ != yaml_BLOCK_ENTRY_TOKEN && + token.typ != yaml_KEY_TOKEN && + token.typ != yaml_VALUE_TOKEN && + token.typ != yaml_BLOCK_END_TOKEN { + parser.states = append(parser.states, yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE) + return yaml_parser_parse_node(parser, event, true, false) + } + parser.state = yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE + return yaml_parser_process_empty_scalar(parser, event, mark) + } + parser.state = parser.states[len(parser.states)-1] + parser.states = parser.states[:len(parser.states)-1] + + *event = yaml_event_t{ + typ: yaml_SEQUENCE_END_EVENT, + start_mark: token.start_mark, + end_mark: token.start_mark, // [Go] Shouldn't this be token.end_mark? + } + return true +} + +// Split stem comment from head comment. +// +// When a sequence or map is found under a sequence entry, the former head comment +// is assigned to the underlying sequence or map as a whole, not the individual +// sequence or map entry as would be expected otherwise. To handle this case the +// previous head comment is moved aside as the stem comment. +func yaml_parser_split_stem_comment(parser *yaml_parser_t, stem_len int) { + if stem_len == 0 { + return + } + + token := peek_token(parser) + if token == nil || token.typ != yaml_BLOCK_SEQUENCE_START_TOKEN && token.typ != yaml_BLOCK_MAPPING_START_TOKEN { + return + } + + parser.stem_comment = parser.head_comment[:stem_len] + if len(parser.head_comment) == stem_len { + parser.head_comment = nil + } else { + // Copy suffix to prevent very strange bugs if someone ever appends + // further bytes to the prefix in the stem_comment slice above. + parser.head_comment = append([]byte(nil), parser.head_comment[stem_len+1:]...) + } +} + +// Parse the productions: +// block_mapping ::= BLOCK-MAPPING_START +// ******************* +// ((KEY block_node_or_indentless_sequence?)? +// *** * +// (VALUE block_node_or_indentless_sequence?)?)* +// +// BLOCK-END +// ********* +// +func yaml_parser_parse_block_mapping_key(parser *yaml_parser_t, event *yaml_event_t, first bool) bool { + if first { + token := peek_token(parser) + if token == nil { + return false + } + parser.marks = append(parser.marks, token.start_mark) + skip_token(parser) + } + + token := peek_token(parser) + if token == nil { + return false + } + + // [Go] A tail comment was left from the prior mapping value processed. Emit an event + // as it needs to be processed with that value and not the following key. + if len(parser.tail_comment) > 0 { + *event = yaml_event_t{ + typ: yaml_TAIL_COMMENT_EVENT, + start_mark: token.start_mark, + end_mark: token.end_mark, + foot_comment: parser.tail_comment, + } + parser.tail_comment = nil + return true + } + + if token.typ == yaml_KEY_TOKEN { + mark := token.end_mark + skip_token(parser) + token = peek_token(parser) + if token == nil { + return false + } + if token.typ != yaml_KEY_TOKEN && + token.typ != yaml_VALUE_TOKEN && + token.typ != yaml_BLOCK_END_TOKEN { + parser.states = append(parser.states, yaml_PARSE_BLOCK_MAPPING_VALUE_STATE) + return yaml_parser_parse_node(parser, event, true, true) + } else { + parser.state = yaml_PARSE_BLOCK_MAPPING_VALUE_STATE + return yaml_parser_process_empty_scalar(parser, event, mark) + } + } else if token.typ == yaml_BLOCK_END_TOKEN { + parser.state = parser.states[len(parser.states)-1] + parser.states = parser.states[:len(parser.states)-1] + parser.marks = parser.marks[:len(parser.marks)-1] + *event = yaml_event_t{ + typ: yaml_MAPPING_END_EVENT, + start_mark: token.start_mark, + end_mark: token.end_mark, + } + yaml_parser_set_event_comments(parser, event) + skip_token(parser) + return true + } + + context_mark := parser.marks[len(parser.marks)-1] + parser.marks = parser.marks[:len(parser.marks)-1] + return yaml_parser_set_parser_error_context(parser, + "while parsing a block mapping", context_mark, + "did not find expected key", token.start_mark) +} + +// Parse the productions: +// block_mapping ::= BLOCK-MAPPING_START +// +// ((KEY block_node_or_indentless_sequence?)? +// +// (VALUE block_node_or_indentless_sequence?)?)* +// ***** * +// BLOCK-END +// +// +func yaml_parser_parse_block_mapping_value(parser *yaml_parser_t, event *yaml_event_t) bool { + token := peek_token(parser) + if token == nil { + return false + } + if token.typ == yaml_VALUE_TOKEN { + mark := token.end_mark + skip_token(parser) + token = peek_token(parser) + if token == nil { + return false + } + if token.typ != yaml_KEY_TOKEN && + token.typ != yaml_VALUE_TOKEN && + token.typ != yaml_BLOCK_END_TOKEN { + parser.states = append(parser.states, yaml_PARSE_BLOCK_MAPPING_KEY_STATE) + return yaml_parser_parse_node(parser, event, true, true) + } + parser.state = yaml_PARSE_BLOCK_MAPPING_KEY_STATE + return yaml_parser_process_empty_scalar(parser, event, mark) + } + parser.state = yaml_PARSE_BLOCK_MAPPING_KEY_STATE + return yaml_parser_process_empty_scalar(parser, event, token.start_mark) +} + +// Parse the productions: +// flow_sequence ::= FLOW-SEQUENCE-START +// ******************* +// (flow_sequence_entry FLOW-ENTRY)* +// * ********** +// flow_sequence_entry? +// * +// FLOW-SEQUENCE-END +// ***************** +// flow_sequence_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)? +// * +// +func yaml_parser_parse_flow_sequence_entry(parser *yaml_parser_t, event *yaml_event_t, first bool) bool { + if first { + token := peek_token(parser) + if token == nil { + return false + } + parser.marks = append(parser.marks, token.start_mark) + skip_token(parser) + } + token := peek_token(parser) + if token == nil { + return false + } + if token.typ != yaml_FLOW_SEQUENCE_END_TOKEN { + if !first { + if token.typ == yaml_FLOW_ENTRY_TOKEN { + skip_token(parser) + token = peek_token(parser) + if token == nil { + return false + } + } else { + context_mark := parser.marks[len(parser.marks)-1] + parser.marks = parser.marks[:len(parser.marks)-1] + return yaml_parser_set_parser_error_context(parser, + "while parsing a flow sequence", context_mark, + "did not find expected ',' or ']'", token.start_mark) + } + } + + if token.typ == yaml_KEY_TOKEN { + parser.state = yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE + *event = yaml_event_t{ + typ: yaml_MAPPING_START_EVENT, + start_mark: token.start_mark, + end_mark: token.end_mark, + implicit: true, + style: yaml_style_t(yaml_FLOW_MAPPING_STYLE), + } + skip_token(parser) + return true + } else if token.typ != yaml_FLOW_SEQUENCE_END_TOKEN { + parser.states = append(parser.states, yaml_PARSE_FLOW_SEQUENCE_ENTRY_STATE) + return yaml_parser_parse_node(parser, event, false, false) + } + } + + parser.state = parser.states[len(parser.states)-1] + parser.states = parser.states[:len(parser.states)-1] + parser.marks = parser.marks[:len(parser.marks)-1] + + *event = yaml_event_t{ + typ: yaml_SEQUENCE_END_EVENT, + start_mark: token.start_mark, + end_mark: token.end_mark, + } + yaml_parser_set_event_comments(parser, event) + + skip_token(parser) + return true +} + +// +// Parse the productions: +// flow_sequence_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)? +// *** * +// +func yaml_parser_parse_flow_sequence_entry_mapping_key(parser *yaml_parser_t, event *yaml_event_t) bool { + token := peek_token(parser) + if token == nil { + return false + } + if token.typ != yaml_VALUE_TOKEN && + token.typ != yaml_FLOW_ENTRY_TOKEN && + token.typ != yaml_FLOW_SEQUENCE_END_TOKEN { + parser.states = append(parser.states, yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE) + return yaml_parser_parse_node(parser, event, false, false) + } + mark := token.end_mark + skip_token(parser) + parser.state = yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE + return yaml_parser_process_empty_scalar(parser, event, mark) +} + +// Parse the productions: +// flow_sequence_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)? +// ***** * +// +func yaml_parser_parse_flow_sequence_entry_mapping_value(parser *yaml_parser_t, event *yaml_event_t) bool { + token := peek_token(parser) + if token == nil { + return false + } + if token.typ == yaml_VALUE_TOKEN { + skip_token(parser) + token := peek_token(parser) + if token == nil { + return false + } + if token.typ != yaml_FLOW_ENTRY_TOKEN && token.typ != yaml_FLOW_SEQUENCE_END_TOKEN { + parser.states = append(parser.states, yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE) + return yaml_parser_parse_node(parser, event, false, false) + } + } + parser.state = yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE + return yaml_parser_process_empty_scalar(parser, event, token.start_mark) +} + +// Parse the productions: +// flow_sequence_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)? +// * +// +func yaml_parser_parse_flow_sequence_entry_mapping_end(parser *yaml_parser_t, event *yaml_event_t) bool { + token := peek_token(parser) + if token == nil { + return false + } + parser.state = yaml_PARSE_FLOW_SEQUENCE_ENTRY_STATE + *event = yaml_event_t{ + typ: yaml_MAPPING_END_EVENT, + start_mark: token.start_mark, + end_mark: token.start_mark, // [Go] Shouldn't this be end_mark? + } + return true +} + +// Parse the productions: +// flow_mapping ::= FLOW-MAPPING-START +// ****************** +// (flow_mapping_entry FLOW-ENTRY)* +// * ********** +// flow_mapping_entry? +// ****************** +// FLOW-MAPPING-END +// **************** +// flow_mapping_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)? +// * *** * +// +func yaml_parser_parse_flow_mapping_key(parser *yaml_parser_t, event *yaml_event_t, first bool) bool { + if first { + token := peek_token(parser) + parser.marks = append(parser.marks, token.start_mark) + skip_token(parser) + } + + token := peek_token(parser) + if token == nil { + return false + } + + if token.typ != yaml_FLOW_MAPPING_END_TOKEN { + if !first { + if token.typ == yaml_FLOW_ENTRY_TOKEN { + skip_token(parser) + token = peek_token(parser) + if token == nil { + return false + } + } else { + context_mark := parser.marks[len(parser.marks)-1] + parser.marks = parser.marks[:len(parser.marks)-1] + return yaml_parser_set_parser_error_context(parser, + "while parsing a flow mapping", context_mark, + "did not find expected ',' or '}'", token.start_mark) + } + } + + if token.typ == yaml_KEY_TOKEN { + skip_token(parser) + token = peek_token(parser) + if token == nil { + return false + } + if token.typ != yaml_VALUE_TOKEN && + token.typ != yaml_FLOW_ENTRY_TOKEN && + token.typ != yaml_FLOW_MAPPING_END_TOKEN { + parser.states = append(parser.states, yaml_PARSE_FLOW_MAPPING_VALUE_STATE) + return yaml_parser_parse_node(parser, event, false, false) + } else { + parser.state = yaml_PARSE_FLOW_MAPPING_VALUE_STATE + return yaml_parser_process_empty_scalar(parser, event, token.start_mark) + } + } else if token.typ != yaml_FLOW_MAPPING_END_TOKEN { + parser.states = append(parser.states, yaml_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE) + return yaml_parser_parse_node(parser, event, false, false) + } + } + + parser.state = parser.states[len(parser.states)-1] + parser.states = parser.states[:len(parser.states)-1] + parser.marks = parser.marks[:len(parser.marks)-1] + *event = yaml_event_t{ + typ: yaml_MAPPING_END_EVENT, + start_mark: token.start_mark, + end_mark: token.end_mark, + } + yaml_parser_set_event_comments(parser, event) + skip_token(parser) + return true +} + +// Parse the productions: +// flow_mapping_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)? +// * ***** * +// +func yaml_parser_parse_flow_mapping_value(parser *yaml_parser_t, event *yaml_event_t, empty bool) bool { + token := peek_token(parser) + if token == nil { + return false + } + if empty { + parser.state = yaml_PARSE_FLOW_MAPPING_KEY_STATE + return yaml_parser_process_empty_scalar(parser, event, token.start_mark) + } + if token.typ == yaml_VALUE_TOKEN { + skip_token(parser) + token = peek_token(parser) + if token == nil { + return false + } + if token.typ != yaml_FLOW_ENTRY_TOKEN && token.typ != yaml_FLOW_MAPPING_END_TOKEN { + parser.states = append(parser.states, yaml_PARSE_FLOW_MAPPING_KEY_STATE) + return yaml_parser_parse_node(parser, event, false, false) + } + } + parser.state = yaml_PARSE_FLOW_MAPPING_KEY_STATE + return yaml_parser_process_empty_scalar(parser, event, token.start_mark) +} + +// Generate an empty scalar event. +func yaml_parser_process_empty_scalar(parser *yaml_parser_t, event *yaml_event_t, mark yaml_mark_t) bool { + *event = yaml_event_t{ + typ: yaml_SCALAR_EVENT, + start_mark: mark, + end_mark: mark, + value: nil, // Empty + implicit: true, + style: yaml_style_t(yaml_PLAIN_SCALAR_STYLE), + } + return true +} + +var default_tag_directives = []yaml_tag_directive_t{ + {[]byte("!"), []byte("!")}, + {[]byte("!!"), []byte("tag:yaml.org,2002:")}, +} + +// Parse directives. +func yaml_parser_process_directives(parser *yaml_parser_t, + version_directive_ref **yaml_version_directive_t, + tag_directives_ref *[]yaml_tag_directive_t) bool { + + var version_directive *yaml_version_directive_t + var tag_directives []yaml_tag_directive_t + + token := peek_token(parser) + if token == nil { + return false + } + + for token.typ == yaml_VERSION_DIRECTIVE_TOKEN || token.typ == yaml_TAG_DIRECTIVE_TOKEN { + if token.typ == yaml_VERSION_DIRECTIVE_TOKEN { + if version_directive != nil { + yaml_parser_set_parser_error(parser, + "found duplicate %YAML directive", token.start_mark) + return false + } + if token.major != 1 || token.minor != 1 { + yaml_parser_set_parser_error(parser, + "found incompatible YAML document", token.start_mark) + return false + } + version_directive = &yaml_version_directive_t{ + major: token.major, + minor: token.minor, + } + } else if token.typ == yaml_TAG_DIRECTIVE_TOKEN { + value := yaml_tag_directive_t{ + handle: token.value, + prefix: token.prefix, + } + if !yaml_parser_append_tag_directive(parser, value, false, token.start_mark) { + return false + } + tag_directives = append(tag_directives, value) + } + + skip_token(parser) + token = peek_token(parser) + if token == nil { + return false + } + } + + for i := range default_tag_directives { + if !yaml_parser_append_tag_directive(parser, default_tag_directives[i], true, token.start_mark) { + return false + } + } + + if version_directive_ref != nil { + *version_directive_ref = version_directive + } + if tag_directives_ref != nil { + *tag_directives_ref = tag_directives + } + return true +} + +// Append a tag directive to the directives stack. +func yaml_parser_append_tag_directive(parser *yaml_parser_t, value yaml_tag_directive_t, allow_duplicates bool, mark yaml_mark_t) bool { + for i := range parser.tag_directives { + if bytes.Equal(value.handle, parser.tag_directives[i].handle) { + if allow_duplicates { + return true + } + return yaml_parser_set_parser_error(parser, "found duplicate %TAG directive", mark) + } + } + + // [Go] I suspect the copy is unnecessary. This was likely done + // because there was no way to track ownership of the data. + value_copy := yaml_tag_directive_t{ + handle: make([]byte, len(value.handle)), + prefix: make([]byte, len(value.prefix)), + } + copy(value_copy.handle, value.handle) + copy(value_copy.prefix, value.prefix) + parser.tag_directives = append(parser.tag_directives, value_copy) + return true +} diff --git a/vendor/gopkg.in/yaml.v3/readerc.go b/vendor/gopkg.in/yaml.v3/readerc.go new file mode 100644 index 000000000..b7de0a89c --- /dev/null +++ b/vendor/gopkg.in/yaml.v3/readerc.go @@ -0,0 +1,434 @@ +// +// Copyright (c) 2011-2019 Canonical Ltd +// Copyright (c) 2006-2010 Kirill Simonov +// +// Permission is hereby granted, free of charge, to any person obtaining a copy of +// this software and associated documentation files (the "Software"), to deal in +// the Software without restriction, including without limitation the rights to +// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies +// of the Software, and to permit persons to whom the Software is furnished to do +// so, subject to the following conditions: +// +// The above copyright notice and this permission notice shall be included in all +// copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +// SOFTWARE. + +package yaml + +import ( + "io" +) + +// Set the reader error and return 0. +func yaml_parser_set_reader_error(parser *yaml_parser_t, problem string, offset int, value int) bool { + parser.error = yaml_READER_ERROR + parser.problem = problem + parser.problem_offset = offset + parser.problem_value = value + return false +} + +// Byte order marks. +const ( + bom_UTF8 = "\xef\xbb\xbf" + bom_UTF16LE = "\xff\xfe" + bom_UTF16BE = "\xfe\xff" +) + +// Determine the input stream encoding by checking the BOM symbol. If no BOM is +// found, the UTF-8 encoding is assumed. Return 1 on success, 0 on failure. +func yaml_parser_determine_encoding(parser *yaml_parser_t) bool { + // Ensure that we had enough bytes in the raw buffer. + for !parser.eof && len(parser.raw_buffer)-parser.raw_buffer_pos < 3 { + if !yaml_parser_update_raw_buffer(parser) { + return false + } + } + + // Determine the encoding. + buf := parser.raw_buffer + pos := parser.raw_buffer_pos + avail := len(buf) - pos + if avail >= 2 && buf[pos] == bom_UTF16LE[0] && buf[pos+1] == bom_UTF16LE[1] { + parser.encoding = yaml_UTF16LE_ENCODING + parser.raw_buffer_pos += 2 + parser.offset += 2 + } else if avail >= 2 && buf[pos] == bom_UTF16BE[0] && buf[pos+1] == bom_UTF16BE[1] { + parser.encoding = yaml_UTF16BE_ENCODING + parser.raw_buffer_pos += 2 + parser.offset += 2 + } else if avail >= 3 && buf[pos] == bom_UTF8[0] && buf[pos+1] == bom_UTF8[1] && buf[pos+2] == bom_UTF8[2] { + parser.encoding = yaml_UTF8_ENCODING + parser.raw_buffer_pos += 3 + parser.offset += 3 + } else { + parser.encoding = yaml_UTF8_ENCODING + } + return true +} + +// Update the raw buffer. +func yaml_parser_update_raw_buffer(parser *yaml_parser_t) bool { + size_read := 0 + + // Return if the raw buffer is full. + if parser.raw_buffer_pos == 0 && len(parser.raw_buffer) == cap(parser.raw_buffer) { + return true + } + + // Return on EOF. + if parser.eof { + return true + } + + // Move the remaining bytes in the raw buffer to the beginning. + if parser.raw_buffer_pos > 0 && parser.raw_buffer_pos < len(parser.raw_buffer) { + copy(parser.raw_buffer, parser.raw_buffer[parser.raw_buffer_pos:]) + } + parser.raw_buffer = parser.raw_buffer[:len(parser.raw_buffer)-parser.raw_buffer_pos] + parser.raw_buffer_pos = 0 + + // Call the read handler to fill the buffer. + size_read, err := parser.read_handler(parser, parser.raw_buffer[len(parser.raw_buffer):cap(parser.raw_buffer)]) + parser.raw_buffer = parser.raw_buffer[:len(parser.raw_buffer)+size_read] + if err == io.EOF { + parser.eof = true + } else if err != nil { + return yaml_parser_set_reader_error(parser, "input error: "+err.Error(), parser.offset, -1) + } + return true +} + +// Ensure that the buffer contains at least `length` characters. +// Return true on success, false on failure. +// +// The length is supposed to be significantly less that the buffer size. +func yaml_parser_update_buffer(parser *yaml_parser_t, length int) bool { + if parser.read_handler == nil { + panic("read handler must be set") + } + + // [Go] This function was changed to guarantee the requested length size at EOF. + // The fact we need to do this is pretty awful, but the description above implies + // for that to be the case, and there are tests + + // If the EOF flag is set and the raw buffer is empty, do nothing. + if parser.eof && parser.raw_buffer_pos == len(parser.raw_buffer) { + // [Go] ACTUALLY! Read the documentation of this function above. + // This is just broken. To return true, we need to have the + // given length in the buffer. Not doing that means every single + // check that calls this function to make sure the buffer has a + // given length is Go) panicking; or C) accessing invalid memory. + //return true + } + + // Return if the buffer contains enough characters. + if parser.unread >= length { + return true + } + + // Determine the input encoding if it is not known yet. + if parser.encoding == yaml_ANY_ENCODING { + if !yaml_parser_determine_encoding(parser) { + return false + } + } + + // Move the unread characters to the beginning of the buffer. + buffer_len := len(parser.buffer) + if parser.buffer_pos > 0 && parser.buffer_pos < buffer_len { + copy(parser.buffer, parser.buffer[parser.buffer_pos:]) + buffer_len -= parser.buffer_pos + parser.buffer_pos = 0 + } else if parser.buffer_pos == buffer_len { + buffer_len = 0 + parser.buffer_pos = 0 + } + + // Open the whole buffer for writing, and cut it before returning. + parser.buffer = parser.buffer[:cap(parser.buffer)] + + // Fill the buffer until it has enough characters. + first := true + for parser.unread < length { + + // Fill the raw buffer if necessary. + if !first || parser.raw_buffer_pos == len(parser.raw_buffer) { + if !yaml_parser_update_raw_buffer(parser) { + parser.buffer = parser.buffer[:buffer_len] + return false + } + } + first = false + + // Decode the raw buffer. + inner: + for parser.raw_buffer_pos != len(parser.raw_buffer) { + var value rune + var width int + + raw_unread := len(parser.raw_buffer) - parser.raw_buffer_pos + + // Decode the next character. + switch parser.encoding { + case yaml_UTF8_ENCODING: + // Decode a UTF-8 character. Check RFC 3629 + // (http://www.ietf.org/rfc/rfc3629.txt) for more details. + // + // The following table (taken from the RFC) is used for + // decoding. + // + // Char. number range | UTF-8 octet sequence + // (hexadecimal) | (binary) + // --------------------+------------------------------------ + // 0000 0000-0000 007F | 0xxxxxxx + // 0000 0080-0000 07FF | 110xxxxx 10xxxxxx + // 0000 0800-0000 FFFF | 1110xxxx 10xxxxxx 10xxxxxx + // 0001 0000-0010 FFFF | 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx + // + // Additionally, the characters in the range 0xD800-0xDFFF + // are prohibited as they are reserved for use with UTF-16 + // surrogate pairs. + + // Determine the length of the UTF-8 sequence. + octet := parser.raw_buffer[parser.raw_buffer_pos] + switch { + case octet&0x80 == 0x00: + width = 1 + case octet&0xE0 == 0xC0: + width = 2 + case octet&0xF0 == 0xE0: + width = 3 + case octet&0xF8 == 0xF0: + width = 4 + default: + // The leading octet is invalid. + return yaml_parser_set_reader_error(parser, + "invalid leading UTF-8 octet", + parser.offset, int(octet)) + } + + // Check if the raw buffer contains an incomplete character. + if width > raw_unread { + if parser.eof { + return yaml_parser_set_reader_error(parser, + "incomplete UTF-8 octet sequence", + parser.offset, -1) + } + break inner + } + + // Decode the leading octet. + switch { + case octet&0x80 == 0x00: + value = rune(octet & 0x7F) + case octet&0xE0 == 0xC0: + value = rune(octet & 0x1F) + case octet&0xF0 == 0xE0: + value = rune(octet & 0x0F) + case octet&0xF8 == 0xF0: + value = rune(octet & 0x07) + default: + value = 0 + } + + // Check and decode the trailing octets. + for k := 1; k < width; k++ { + octet = parser.raw_buffer[parser.raw_buffer_pos+k] + + // Check if the octet is valid. + if (octet & 0xC0) != 0x80 { + return yaml_parser_set_reader_error(parser, + "invalid trailing UTF-8 octet", + parser.offset+k, int(octet)) + } + + // Decode the octet. + value = (value << 6) + rune(octet&0x3F) + } + + // Check the length of the sequence against the value. + switch { + case width == 1: + case width == 2 && value >= 0x80: + case width == 3 && value >= 0x800: + case width == 4 && value >= 0x10000: + default: + return yaml_parser_set_reader_error(parser, + "invalid length of a UTF-8 sequence", + parser.offset, -1) + } + + // Check the range of the value. + if value >= 0xD800 && value <= 0xDFFF || value > 0x10FFFF { + return yaml_parser_set_reader_error(parser, + "invalid Unicode character", + parser.offset, int(value)) + } + + case yaml_UTF16LE_ENCODING, yaml_UTF16BE_ENCODING: + var low, high int + if parser.encoding == yaml_UTF16LE_ENCODING { + low, high = 0, 1 + } else { + low, high = 1, 0 + } + + // The UTF-16 encoding is not as simple as one might + // naively think. Check RFC 2781 + // (http://www.ietf.org/rfc/rfc2781.txt). + // + // Normally, two subsequent bytes describe a Unicode + // character. However a special technique (called a + // surrogate pair) is used for specifying character + // values larger than 0xFFFF. + // + // A surrogate pair consists of two pseudo-characters: + // high surrogate area (0xD800-0xDBFF) + // low surrogate area (0xDC00-0xDFFF) + // + // The following formulas are used for decoding + // and encoding characters using surrogate pairs: + // + // U = U' + 0x10000 (0x01 00 00 <= U <= 0x10 FF FF) + // U' = yyyyyyyyyyxxxxxxxxxx (0 <= U' <= 0x0F FF FF) + // W1 = 110110yyyyyyyyyy + // W2 = 110111xxxxxxxxxx + // + // where U is the character value, W1 is the high surrogate + // area, W2 is the low surrogate area. + + // Check for incomplete UTF-16 character. + if raw_unread < 2 { + if parser.eof { + return yaml_parser_set_reader_error(parser, + "incomplete UTF-16 character", + parser.offset, -1) + } + break inner + } + + // Get the character. + value = rune(parser.raw_buffer[parser.raw_buffer_pos+low]) + + (rune(parser.raw_buffer[parser.raw_buffer_pos+high]) << 8) + + // Check for unexpected low surrogate area. + if value&0xFC00 == 0xDC00 { + return yaml_parser_set_reader_error(parser, + "unexpected low surrogate area", + parser.offset, int(value)) + } + + // Check for a high surrogate area. + if value&0xFC00 == 0xD800 { + width = 4 + + // Check for incomplete surrogate pair. + if raw_unread < 4 { + if parser.eof { + return yaml_parser_set_reader_error(parser, + "incomplete UTF-16 surrogate pair", + parser.offset, -1) + } + break inner + } + + // Get the next character. + value2 := rune(parser.raw_buffer[parser.raw_buffer_pos+low+2]) + + (rune(parser.raw_buffer[parser.raw_buffer_pos+high+2]) << 8) + + // Check for a low surrogate area. + if value2&0xFC00 != 0xDC00 { + return yaml_parser_set_reader_error(parser, + "expected low surrogate area", + parser.offset+2, int(value2)) + } + + // Generate the value of the surrogate pair. + value = 0x10000 + ((value & 0x3FF) << 10) + (value2 & 0x3FF) + } else { + width = 2 + } + + default: + panic("impossible") + } + + // Check if the character is in the allowed range: + // #x9 | #xA | #xD | [#x20-#x7E] (8 bit) + // | #x85 | [#xA0-#xD7FF] | [#xE000-#xFFFD] (16 bit) + // | [#x10000-#x10FFFF] (32 bit) + switch { + case value == 0x09: + case value == 0x0A: + case value == 0x0D: + case value >= 0x20 && value <= 0x7E: + case value == 0x85: + case value >= 0xA0 && value <= 0xD7FF: + case value >= 0xE000 && value <= 0xFFFD: + case value >= 0x10000 && value <= 0x10FFFF: + default: + return yaml_parser_set_reader_error(parser, + "control characters are not allowed", + parser.offset, int(value)) + } + + // Move the raw pointers. + parser.raw_buffer_pos += width + parser.offset += width + + // Finally put the character into the buffer. + if value <= 0x7F { + // 0000 0000-0000 007F . 0xxxxxxx + parser.buffer[buffer_len+0] = byte(value) + buffer_len += 1 + } else if value <= 0x7FF { + // 0000 0080-0000 07FF . 110xxxxx 10xxxxxx + parser.buffer[buffer_len+0] = byte(0xC0 + (value >> 6)) + parser.buffer[buffer_len+1] = byte(0x80 + (value & 0x3F)) + buffer_len += 2 + } else if value <= 0xFFFF { + // 0000 0800-0000 FFFF . 1110xxxx 10xxxxxx 10xxxxxx + parser.buffer[buffer_len+0] = byte(0xE0 + (value >> 12)) + parser.buffer[buffer_len+1] = byte(0x80 + ((value >> 6) & 0x3F)) + parser.buffer[buffer_len+2] = byte(0x80 + (value & 0x3F)) + buffer_len += 3 + } else { + // 0001 0000-0010 FFFF . 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx + parser.buffer[buffer_len+0] = byte(0xF0 + (value >> 18)) + parser.buffer[buffer_len+1] = byte(0x80 + ((value >> 12) & 0x3F)) + parser.buffer[buffer_len+2] = byte(0x80 + ((value >> 6) & 0x3F)) + parser.buffer[buffer_len+3] = byte(0x80 + (value & 0x3F)) + buffer_len += 4 + } + + parser.unread++ + } + + // On EOF, put NUL into the buffer and return. + if parser.eof { + parser.buffer[buffer_len] = 0 + buffer_len++ + parser.unread++ + break + } + } + // [Go] Read the documentation of this function above. To return true, + // we need to have the given length in the buffer. Not doing that means + // every single check that calls this function to make sure the buffer + // has a given length is Go) panicking; or C) accessing invalid memory. + // This happens here due to the EOF above breaking early. + for buffer_len < length { + parser.buffer[buffer_len] = 0 + buffer_len++ + } + parser.buffer = parser.buffer[:buffer_len] + return true +} diff --git a/vendor/gopkg.in/yaml.v3/resolve.go b/vendor/gopkg.in/yaml.v3/resolve.go new file mode 100644 index 000000000..64ae88805 --- /dev/null +++ b/vendor/gopkg.in/yaml.v3/resolve.go @@ -0,0 +1,326 @@ +// +// Copyright (c) 2011-2019 Canonical Ltd +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package yaml + +import ( + "encoding/base64" + "math" + "regexp" + "strconv" + "strings" + "time" +) + +type resolveMapItem struct { + value interface{} + tag string +} + +var resolveTable = make([]byte, 256) +var resolveMap = make(map[string]resolveMapItem) + +func init() { + t := resolveTable + t[int('+')] = 'S' // Sign + t[int('-')] = 'S' + for _, c := range "0123456789" { + t[int(c)] = 'D' // Digit + } + for _, c := range "yYnNtTfFoO~" { + t[int(c)] = 'M' // In map + } + t[int('.')] = '.' // Float (potentially in map) + + var resolveMapList = []struct { + v interface{} + tag string + l []string + }{ + {true, boolTag, []string{"true", "True", "TRUE"}}, + {false, boolTag, []string{"false", "False", "FALSE"}}, + {nil, nullTag, []string{"", "~", "null", "Null", "NULL"}}, + {math.NaN(), floatTag, []string{".nan", ".NaN", ".NAN"}}, + {math.Inf(+1), floatTag, []string{".inf", ".Inf", ".INF"}}, + {math.Inf(+1), floatTag, []string{"+.inf", "+.Inf", "+.INF"}}, + {math.Inf(-1), floatTag, []string{"-.inf", "-.Inf", "-.INF"}}, + {"<<", mergeTag, []string{"<<"}}, + } + + m := resolveMap + for _, item := range resolveMapList { + for _, s := range item.l { + m[s] = resolveMapItem{item.v, item.tag} + } + } +} + +const ( + nullTag = "!!null" + boolTag = "!!bool" + strTag = "!!str" + intTag = "!!int" + floatTag = "!!float" + timestampTag = "!!timestamp" + seqTag = "!!seq" + mapTag = "!!map" + binaryTag = "!!binary" + mergeTag = "!!merge" +) + +var longTags = make(map[string]string) +var shortTags = make(map[string]string) + +func init() { + for _, stag := range []string{nullTag, boolTag, strTag, intTag, floatTag, timestampTag, seqTag, mapTag, binaryTag, mergeTag} { + ltag := longTag(stag) + longTags[stag] = ltag + shortTags[ltag] = stag + } +} + +const longTagPrefix = "tag:yaml.org,2002:" + +func shortTag(tag string) string { + if strings.HasPrefix(tag, longTagPrefix) { + if stag, ok := shortTags[tag]; ok { + return stag + } + return "!!" + tag[len(longTagPrefix):] + } + return tag +} + +func longTag(tag string) string { + if strings.HasPrefix(tag, "!!") { + if ltag, ok := longTags[tag]; ok { + return ltag + } + return longTagPrefix + tag[2:] + } + return tag +} + +func resolvableTag(tag string) bool { + switch tag { + case "", strTag, boolTag, intTag, floatTag, nullTag, timestampTag: + return true + } + return false +} + +var yamlStyleFloat = regexp.MustCompile(`^[-+]?(\.[0-9]+|[0-9]+(\.[0-9]*)?)([eE][-+]?[0-9]+)?$`) + +func resolve(tag string, in string) (rtag string, out interface{}) { + tag = shortTag(tag) + if !resolvableTag(tag) { + return tag, in + } + + defer func() { + switch tag { + case "", rtag, strTag, binaryTag: + return + case floatTag: + if rtag == intTag { + switch v := out.(type) { + case int64: + rtag = floatTag + out = float64(v) + return + case int: + rtag = floatTag + out = float64(v) + return + } + } + } + failf("cannot decode %s `%s` as a %s", shortTag(rtag), in, shortTag(tag)) + }() + + // Any data is accepted as a !!str or !!binary. + // Otherwise, the prefix is enough of a hint about what it might be. + hint := byte('N') + if in != "" { + hint = resolveTable[in[0]] + } + if hint != 0 && tag != strTag && tag != binaryTag { + // Handle things we can lookup in a map. + if item, ok := resolveMap[in]; ok { + return item.tag, item.value + } + + // Base 60 floats are a bad idea, were dropped in YAML 1.2, and + // are purposefully unsupported here. They're still quoted on + // the way out for compatibility with other parser, though. + + switch hint { + case 'M': + // We've already checked the map above. + + case '.': + // Not in the map, so maybe a normal float. + floatv, err := strconv.ParseFloat(in, 64) + if err == nil { + return floatTag, floatv + } + + case 'D', 'S': + // Int, float, or timestamp. + // Only try values as a timestamp if the value is unquoted or there's an explicit + // !!timestamp tag. + if tag == "" || tag == timestampTag { + t, ok := parseTimestamp(in) + if ok { + return timestampTag, t + } + } + + plain := strings.Replace(in, "_", "", -1) + intv, err := strconv.ParseInt(plain, 0, 64) + if err == nil { + if intv == int64(int(intv)) { + return intTag, int(intv) + } else { + return intTag, intv + } + } + uintv, err := strconv.ParseUint(plain, 0, 64) + if err == nil { + return intTag, uintv + } + if yamlStyleFloat.MatchString(plain) { + floatv, err := strconv.ParseFloat(plain, 64) + if err == nil { + return floatTag, floatv + } + } + if strings.HasPrefix(plain, "0b") { + intv, err := strconv.ParseInt(plain[2:], 2, 64) + if err == nil { + if intv == int64(int(intv)) { + return intTag, int(intv) + } else { + return intTag, intv + } + } + uintv, err := strconv.ParseUint(plain[2:], 2, 64) + if err == nil { + return intTag, uintv + } + } else if strings.HasPrefix(plain, "-0b") { + intv, err := strconv.ParseInt("-"+plain[3:], 2, 64) + if err == nil { + if true || intv == int64(int(intv)) { + return intTag, int(intv) + } else { + return intTag, intv + } + } + } + // Octals as introduced in version 1.2 of the spec. + // Octals from the 1.1 spec, spelled as 0777, are still + // decoded by default in v3 as well for compatibility. + // May be dropped in v4 depending on how usage evolves. + if strings.HasPrefix(plain, "0o") { + intv, err := strconv.ParseInt(plain[2:], 8, 64) + if err == nil { + if intv == int64(int(intv)) { + return intTag, int(intv) + } else { + return intTag, intv + } + } + uintv, err := strconv.ParseUint(plain[2:], 8, 64) + if err == nil { + return intTag, uintv + } + } else if strings.HasPrefix(plain, "-0o") { + intv, err := strconv.ParseInt("-"+plain[3:], 8, 64) + if err == nil { + if true || intv == int64(int(intv)) { + return intTag, int(intv) + } else { + return intTag, intv + } + } + } + default: + panic("internal error: missing handler for resolver table: " + string(rune(hint)) + " (with " + in + ")") + } + } + return strTag, in +} + +// encodeBase64 encodes s as base64 that is broken up into multiple lines +// as appropriate for the resulting length. +func encodeBase64(s string) string { + const lineLen = 70 + encLen := base64.StdEncoding.EncodedLen(len(s)) + lines := encLen/lineLen + 1 + buf := make([]byte, encLen*2+lines) + in := buf[0:encLen] + out := buf[encLen:] + base64.StdEncoding.Encode(in, []byte(s)) + k := 0 + for i := 0; i < len(in); i += lineLen { + j := i + lineLen + if j > len(in) { + j = len(in) + } + k += copy(out[k:], in[i:j]) + if lines > 1 { + out[k] = '\n' + k++ + } + } + return string(out[:k]) +} + +// This is a subset of the formats allowed by the regular expression +// defined at http://yaml.org/type/timestamp.html. +var allowedTimestampFormats = []string{ + "2006-1-2T15:4:5.999999999Z07:00", // RCF3339Nano with short date fields. + "2006-1-2t15:4:5.999999999Z07:00", // RFC3339Nano with short date fields and lower-case "t". + "2006-1-2 15:4:5.999999999", // space separated with no time zone + "2006-1-2", // date only + // Notable exception: time.Parse cannot handle: "2001-12-14 21:59:43.10 -5" + // from the set of examples. +} + +// parseTimestamp parses s as a timestamp string and +// returns the timestamp and reports whether it succeeded. +// Timestamp formats are defined at http://yaml.org/type/timestamp.html +func parseTimestamp(s string) (time.Time, bool) { + // TODO write code to check all the formats supported by + // http://yaml.org/type/timestamp.html instead of using time.Parse. + + // Quick check: all date formats start with YYYY-. + i := 0 + for ; i < len(s); i++ { + if c := s[i]; c < '0' || c > '9' { + break + } + } + if i != 4 || i == len(s) || s[i] != '-' { + return time.Time{}, false + } + for _, format := range allowedTimestampFormats { + if t, err := time.Parse(format, s); err == nil { + return t, true + } + } + return time.Time{}, false +} diff --git a/vendor/gopkg.in/yaml.v3/scannerc.go b/vendor/gopkg.in/yaml.v3/scannerc.go new file mode 100644 index 000000000..ca0070108 --- /dev/null +++ b/vendor/gopkg.in/yaml.v3/scannerc.go @@ -0,0 +1,3038 @@ +// +// Copyright (c) 2011-2019 Canonical Ltd +// Copyright (c) 2006-2010 Kirill Simonov +// +// Permission is hereby granted, free of charge, to any person obtaining a copy of +// this software and associated documentation files (the "Software"), to deal in +// the Software without restriction, including without limitation the rights to +// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies +// of the Software, and to permit persons to whom the Software is furnished to do +// so, subject to the following conditions: +// +// The above copyright notice and this permission notice shall be included in all +// copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +// SOFTWARE. + +package yaml + +import ( + "bytes" + "fmt" +) + +// Introduction +// ************ +// +// The following notes assume that you are familiar with the YAML specification +// (http://yaml.org/spec/1.2/spec.html). We mostly follow it, although in +// some cases we are less restrictive that it requires. +// +// The process of transforming a YAML stream into a sequence of events is +// divided on two steps: Scanning and Parsing. +// +// The Scanner transforms the input stream into a sequence of tokens, while the +// parser transform the sequence of tokens produced by the Scanner into a +// sequence of parsing events. +// +// The Scanner is rather clever and complicated. The Parser, on the contrary, +// is a straightforward implementation of a recursive-descendant parser (or, +// LL(1) parser, as it is usually called). +// +// Actually there are two issues of Scanning that might be called "clever", the +// rest is quite straightforward. The issues are "block collection start" and +// "simple keys". Both issues are explained below in details. +// +// Here the Scanning step is explained and implemented. We start with the list +// of all the tokens produced by the Scanner together with short descriptions. +// +// Now, tokens: +// +// STREAM-START(encoding) # The stream start. +// STREAM-END # The stream end. +// VERSION-DIRECTIVE(major,minor) # The '%YAML' directive. +// TAG-DIRECTIVE(handle,prefix) # The '%TAG' directive. +// DOCUMENT-START # '---' +// DOCUMENT-END # '...' +// BLOCK-SEQUENCE-START # Indentation increase denoting a block +// BLOCK-MAPPING-START # sequence or a block mapping. +// BLOCK-END # Indentation decrease. +// FLOW-SEQUENCE-START # '[' +// FLOW-SEQUENCE-END # ']' +// BLOCK-SEQUENCE-START # '{' +// BLOCK-SEQUENCE-END # '}' +// BLOCK-ENTRY # '-' +// FLOW-ENTRY # ',' +// KEY # '?' or nothing (simple keys). +// VALUE # ':' +// ALIAS(anchor) # '*anchor' +// ANCHOR(anchor) # '&anchor' +// TAG(handle,suffix) # '!handle!suffix' +// SCALAR(value,style) # A scalar. +// +// The following two tokens are "virtual" tokens denoting the beginning and the +// end of the stream: +// +// STREAM-START(encoding) +// STREAM-END +// +// We pass the information about the input stream encoding with the +// STREAM-START token. +// +// The next two tokens are responsible for tags: +// +// VERSION-DIRECTIVE(major,minor) +// TAG-DIRECTIVE(handle,prefix) +// +// Example: +// +// %YAML 1.1 +// %TAG ! !foo +// %TAG !yaml! tag:yaml.org,2002: +// --- +// +// The correspoding sequence of tokens: +// +// STREAM-START(utf-8) +// VERSION-DIRECTIVE(1,1) +// TAG-DIRECTIVE("!","!foo") +// TAG-DIRECTIVE("!yaml","tag:yaml.org,2002:") +// DOCUMENT-START +// STREAM-END +// +// Note that the VERSION-DIRECTIVE and TAG-DIRECTIVE tokens occupy a whole +// line. +// +// The document start and end indicators are represented by: +// +// DOCUMENT-START +// DOCUMENT-END +// +// Note that if a YAML stream contains an implicit document (without '---' +// and '...' indicators), no DOCUMENT-START and DOCUMENT-END tokens will be +// produced. +// +// In the following examples, we present whole documents together with the +// produced tokens. +// +// 1. An implicit document: +// +// 'a scalar' +// +// Tokens: +// +// STREAM-START(utf-8) +// SCALAR("a scalar",single-quoted) +// STREAM-END +// +// 2. An explicit document: +// +// --- +// 'a scalar' +// ... +// +// Tokens: +// +// STREAM-START(utf-8) +// DOCUMENT-START +// SCALAR("a scalar",single-quoted) +// DOCUMENT-END +// STREAM-END +// +// 3. Several documents in a stream: +// +// 'a scalar' +// --- +// 'another scalar' +// --- +// 'yet another scalar' +// +// Tokens: +// +// STREAM-START(utf-8) +// SCALAR("a scalar",single-quoted) +// DOCUMENT-START +// SCALAR("another scalar",single-quoted) +// DOCUMENT-START +// SCALAR("yet another scalar",single-quoted) +// STREAM-END +// +// We have already introduced the SCALAR token above. The following tokens are +// used to describe aliases, anchors, tag, and scalars: +// +// ALIAS(anchor) +// ANCHOR(anchor) +// TAG(handle,suffix) +// SCALAR(value,style) +// +// The following series of examples illustrate the usage of these tokens: +// +// 1. A recursive sequence: +// +// &A [ *A ] +// +// Tokens: +// +// STREAM-START(utf-8) +// ANCHOR("A") +// FLOW-SEQUENCE-START +// ALIAS("A") +// FLOW-SEQUENCE-END +// STREAM-END +// +// 2. A tagged scalar: +// +// !!float "3.14" # A good approximation. +// +// Tokens: +// +// STREAM-START(utf-8) +// TAG("!!","float") +// SCALAR("3.14",double-quoted) +// STREAM-END +// +// 3. Various scalar styles: +// +// --- # Implicit empty plain scalars do not produce tokens. +// --- a plain scalar +// --- 'a single-quoted scalar' +// --- "a double-quoted scalar" +// --- |- +// a literal scalar +// --- >- +// a folded +// scalar +// +// Tokens: +// +// STREAM-START(utf-8) +// DOCUMENT-START +// DOCUMENT-START +// SCALAR("a plain scalar",plain) +// DOCUMENT-START +// SCALAR("a single-quoted scalar",single-quoted) +// DOCUMENT-START +// SCALAR("a double-quoted scalar",double-quoted) +// DOCUMENT-START +// SCALAR("a literal scalar",literal) +// DOCUMENT-START +// SCALAR("a folded scalar",folded) +// STREAM-END +// +// Now it's time to review collection-related tokens. We will start with +// flow collections: +// +// FLOW-SEQUENCE-START +// FLOW-SEQUENCE-END +// FLOW-MAPPING-START +// FLOW-MAPPING-END +// FLOW-ENTRY +// KEY +// VALUE +// +// The tokens FLOW-SEQUENCE-START, FLOW-SEQUENCE-END, FLOW-MAPPING-START, and +// FLOW-MAPPING-END represent the indicators '[', ']', '{', and '}' +// correspondingly. FLOW-ENTRY represent the ',' indicator. Finally the +// indicators '?' and ':', which are used for denoting mapping keys and values, +// are represented by the KEY and VALUE tokens. +// +// The following examples show flow collections: +// +// 1. A flow sequence: +// +// [item 1, item 2, item 3] +// +// Tokens: +// +// STREAM-START(utf-8) +// FLOW-SEQUENCE-START +// SCALAR("item 1",plain) +// FLOW-ENTRY +// SCALAR("item 2",plain) +// FLOW-ENTRY +// SCALAR("item 3",plain) +// FLOW-SEQUENCE-END +// STREAM-END +// +// 2. A flow mapping: +// +// { +// a simple key: a value, # Note that the KEY token is produced. +// ? a complex key: another value, +// } +// +// Tokens: +// +// STREAM-START(utf-8) +// FLOW-MAPPING-START +// KEY +// SCALAR("a simple key",plain) +// VALUE +// SCALAR("a value",plain) +// FLOW-ENTRY +// KEY +// SCALAR("a complex key",plain) +// VALUE +// SCALAR("another value",plain) +// FLOW-ENTRY +// FLOW-MAPPING-END +// STREAM-END +// +// A simple key is a key which is not denoted by the '?' indicator. Note that +// the Scanner still produce the KEY token whenever it encounters a simple key. +// +// For scanning block collections, the following tokens are used (note that we +// repeat KEY and VALUE here): +// +// BLOCK-SEQUENCE-START +// BLOCK-MAPPING-START +// BLOCK-END +// BLOCK-ENTRY +// KEY +// VALUE +// +// The tokens BLOCK-SEQUENCE-START and BLOCK-MAPPING-START denote indentation +// increase that precedes a block collection (cf. the INDENT token in Python). +// The token BLOCK-END denote indentation decrease that ends a block collection +// (cf. the DEDENT token in Python). However YAML has some syntax pecularities +// that makes detections of these tokens more complex. +// +// The tokens BLOCK-ENTRY, KEY, and VALUE are used to represent the indicators +// '-', '?', and ':' correspondingly. +// +// The following examples show how the tokens BLOCK-SEQUENCE-START, +// BLOCK-MAPPING-START, and BLOCK-END are emitted by the Scanner: +// +// 1. Block sequences: +// +// - item 1 +// - item 2 +// - +// - item 3.1 +// - item 3.2 +// - +// key 1: value 1 +// key 2: value 2 +// +// Tokens: +// +// STREAM-START(utf-8) +// BLOCK-SEQUENCE-START +// BLOCK-ENTRY +// SCALAR("item 1",plain) +// BLOCK-ENTRY +// SCALAR("item 2",plain) +// BLOCK-ENTRY +// BLOCK-SEQUENCE-START +// BLOCK-ENTRY +// SCALAR("item 3.1",plain) +// BLOCK-ENTRY +// SCALAR("item 3.2",plain) +// BLOCK-END +// BLOCK-ENTRY +// BLOCK-MAPPING-START +// KEY +// SCALAR("key 1",plain) +// VALUE +// SCALAR("value 1",plain) +// KEY +// SCALAR("key 2",plain) +// VALUE +// SCALAR("value 2",plain) +// BLOCK-END +// BLOCK-END +// STREAM-END +// +// 2. Block mappings: +// +// a simple key: a value # The KEY token is produced here. +// ? a complex key +// : another value +// a mapping: +// key 1: value 1 +// key 2: value 2 +// a sequence: +// - item 1 +// - item 2 +// +// Tokens: +// +// STREAM-START(utf-8) +// BLOCK-MAPPING-START +// KEY +// SCALAR("a simple key",plain) +// VALUE +// SCALAR("a value",plain) +// KEY +// SCALAR("a complex key",plain) +// VALUE +// SCALAR("another value",plain) +// KEY +// SCALAR("a mapping",plain) +// BLOCK-MAPPING-START +// KEY +// SCALAR("key 1",plain) +// VALUE +// SCALAR("value 1",plain) +// KEY +// SCALAR("key 2",plain) +// VALUE +// SCALAR("value 2",plain) +// BLOCK-END +// KEY +// SCALAR("a sequence",plain) +// VALUE +// BLOCK-SEQUENCE-START +// BLOCK-ENTRY +// SCALAR("item 1",plain) +// BLOCK-ENTRY +// SCALAR("item 2",plain) +// BLOCK-END +// BLOCK-END +// STREAM-END +// +// YAML does not always require to start a new block collection from a new +// line. If the current line contains only '-', '?', and ':' indicators, a new +// block collection may start at the current line. The following examples +// illustrate this case: +// +// 1. Collections in a sequence: +// +// - - item 1 +// - item 2 +// - key 1: value 1 +// key 2: value 2 +// - ? complex key +// : complex value +// +// Tokens: +// +// STREAM-START(utf-8) +// BLOCK-SEQUENCE-START +// BLOCK-ENTRY +// BLOCK-SEQUENCE-START +// BLOCK-ENTRY +// SCALAR("item 1",plain) +// BLOCK-ENTRY +// SCALAR("item 2",plain) +// BLOCK-END +// BLOCK-ENTRY +// BLOCK-MAPPING-START +// KEY +// SCALAR("key 1",plain) +// VALUE +// SCALAR("value 1",plain) +// KEY +// SCALAR("key 2",plain) +// VALUE +// SCALAR("value 2",plain) +// BLOCK-END +// BLOCK-ENTRY +// BLOCK-MAPPING-START +// KEY +// SCALAR("complex key") +// VALUE +// SCALAR("complex value") +// BLOCK-END +// BLOCK-END +// STREAM-END +// +// 2. Collections in a mapping: +// +// ? a sequence +// : - item 1 +// - item 2 +// ? a mapping +// : key 1: value 1 +// key 2: value 2 +// +// Tokens: +// +// STREAM-START(utf-8) +// BLOCK-MAPPING-START +// KEY +// SCALAR("a sequence",plain) +// VALUE +// BLOCK-SEQUENCE-START +// BLOCK-ENTRY +// SCALAR("item 1",plain) +// BLOCK-ENTRY +// SCALAR("item 2",plain) +// BLOCK-END +// KEY +// SCALAR("a mapping",plain) +// VALUE +// BLOCK-MAPPING-START +// KEY +// SCALAR("key 1",plain) +// VALUE +// SCALAR("value 1",plain) +// KEY +// SCALAR("key 2",plain) +// VALUE +// SCALAR("value 2",plain) +// BLOCK-END +// BLOCK-END +// STREAM-END +// +// YAML also permits non-indented sequences if they are included into a block +// mapping. In this case, the token BLOCK-SEQUENCE-START is not produced: +// +// key: +// - item 1 # BLOCK-SEQUENCE-START is NOT produced here. +// - item 2 +// +// Tokens: +// +// STREAM-START(utf-8) +// BLOCK-MAPPING-START +// KEY +// SCALAR("key",plain) +// VALUE +// BLOCK-ENTRY +// SCALAR("item 1",plain) +// BLOCK-ENTRY +// SCALAR("item 2",plain) +// BLOCK-END +// + +// Ensure that the buffer contains the required number of characters. +// Return true on success, false on failure (reader error or memory error). +func cache(parser *yaml_parser_t, length int) bool { + // [Go] This was inlined: !cache(A, B) -> unread < B && !update(A, B) + return parser.unread >= length || yaml_parser_update_buffer(parser, length) +} + +// Advance the buffer pointer. +func skip(parser *yaml_parser_t) { + if !is_blank(parser.buffer, parser.buffer_pos) { + parser.newlines = 0 + } + parser.mark.index++ + parser.mark.column++ + parser.unread-- + parser.buffer_pos += width(parser.buffer[parser.buffer_pos]) +} + +func skip_line(parser *yaml_parser_t) { + if is_crlf(parser.buffer, parser.buffer_pos) { + parser.mark.index += 2 + parser.mark.column = 0 + parser.mark.line++ + parser.unread -= 2 + parser.buffer_pos += 2 + parser.newlines++ + } else if is_break(parser.buffer, parser.buffer_pos) { + parser.mark.index++ + parser.mark.column = 0 + parser.mark.line++ + parser.unread-- + parser.buffer_pos += width(parser.buffer[parser.buffer_pos]) + parser.newlines++ + } +} + +// Copy a character to a string buffer and advance pointers. +func read(parser *yaml_parser_t, s []byte) []byte { + if !is_blank(parser.buffer, parser.buffer_pos) { + parser.newlines = 0 + } + w := width(parser.buffer[parser.buffer_pos]) + if w == 0 { + panic("invalid character sequence") + } + if len(s) == 0 { + s = make([]byte, 0, 32) + } + if w == 1 && len(s)+w <= cap(s) { + s = s[:len(s)+1] + s[len(s)-1] = parser.buffer[parser.buffer_pos] + parser.buffer_pos++ + } else { + s = append(s, parser.buffer[parser.buffer_pos:parser.buffer_pos+w]...) + parser.buffer_pos += w + } + parser.mark.index++ + parser.mark.column++ + parser.unread-- + return s +} + +// Copy a line break character to a string buffer and advance pointers. +func read_line(parser *yaml_parser_t, s []byte) []byte { + buf := parser.buffer + pos := parser.buffer_pos + switch { + case buf[pos] == '\r' && buf[pos+1] == '\n': + // CR LF . LF + s = append(s, '\n') + parser.buffer_pos += 2 + parser.mark.index++ + parser.unread-- + case buf[pos] == '\r' || buf[pos] == '\n': + // CR|LF . LF + s = append(s, '\n') + parser.buffer_pos += 1 + case buf[pos] == '\xC2' && buf[pos+1] == '\x85': + // NEL . LF + s = append(s, '\n') + parser.buffer_pos += 2 + case buf[pos] == '\xE2' && buf[pos+1] == '\x80' && (buf[pos+2] == '\xA8' || buf[pos+2] == '\xA9'): + // LS|PS . LS|PS + s = append(s, buf[parser.buffer_pos:pos+3]...) + parser.buffer_pos += 3 + default: + return s + } + parser.mark.index++ + parser.mark.column = 0 + parser.mark.line++ + parser.unread-- + parser.newlines++ + return s +} + +// Get the next token. +func yaml_parser_scan(parser *yaml_parser_t, token *yaml_token_t) bool { + // Erase the token object. + *token = yaml_token_t{} // [Go] Is this necessary? + + // No tokens after STREAM-END or error. + if parser.stream_end_produced || parser.error != yaml_NO_ERROR { + return true + } + + // Ensure that the tokens queue contains enough tokens. + if !parser.token_available { + if !yaml_parser_fetch_more_tokens(parser) { + return false + } + } + + // Fetch the next token from the queue. + *token = parser.tokens[parser.tokens_head] + parser.tokens_head++ + parser.tokens_parsed++ + parser.token_available = false + + if token.typ == yaml_STREAM_END_TOKEN { + parser.stream_end_produced = true + } + return true +} + +// Set the scanner error and return false. +func yaml_parser_set_scanner_error(parser *yaml_parser_t, context string, context_mark yaml_mark_t, problem string) bool { + parser.error = yaml_SCANNER_ERROR + parser.context = context + parser.context_mark = context_mark + parser.problem = problem + parser.problem_mark = parser.mark + return false +} + +func yaml_parser_set_scanner_tag_error(parser *yaml_parser_t, directive bool, context_mark yaml_mark_t, problem string) bool { + context := "while parsing a tag" + if directive { + context = "while parsing a %TAG directive" + } + return yaml_parser_set_scanner_error(parser, context, context_mark, problem) +} + +func trace(args ...interface{}) func() { + pargs := append([]interface{}{"+++"}, args...) + fmt.Println(pargs...) + pargs = append([]interface{}{"---"}, args...) + return func() { fmt.Println(pargs...) } +} + +// Ensure that the tokens queue contains at least one token which can be +// returned to the Parser. +func yaml_parser_fetch_more_tokens(parser *yaml_parser_t) bool { + // While we need more tokens to fetch, do it. + for { + // [Go] The comment parsing logic requires a lookahead of two tokens + // so that foot comments may be parsed in time of associating them + // with the tokens that are parsed before them, and also for line + // comments to be transformed into head comments in some edge cases. + if parser.tokens_head < len(parser.tokens)-2 { + // If a potential simple key is at the head position, we need to fetch + // the next token to disambiguate it. + head_tok_idx, ok := parser.simple_keys_by_tok[parser.tokens_parsed] + if !ok { + break + } else if valid, ok := yaml_simple_key_is_valid(parser, &parser.simple_keys[head_tok_idx]); !ok { + return false + } else if !valid { + break + } + } + // Fetch the next token. + if !yaml_parser_fetch_next_token(parser) { + return false + } + } + + parser.token_available = true + return true +} + +// The dispatcher for token fetchers. +func yaml_parser_fetch_next_token(parser *yaml_parser_t) (ok bool) { + // Ensure that the buffer is initialized. + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + + // Check if we just started scanning. Fetch STREAM-START then. + if !parser.stream_start_produced { + return yaml_parser_fetch_stream_start(parser) + } + + scan_mark := parser.mark + + // Eat whitespaces and comments until we reach the next token. + if !yaml_parser_scan_to_next_token(parser) { + return false + } + + // [Go] While unrolling indents, transform the head comments of prior + // indentation levels observed after scan_start into foot comments at + // the respective indexes. + + // Check the indentation level against the current column. + if !yaml_parser_unroll_indent(parser, parser.mark.column, scan_mark) { + return false + } + + // Ensure that the buffer contains at least 4 characters. 4 is the length + // of the longest indicators ('--- ' and '... '). + if parser.unread < 4 && !yaml_parser_update_buffer(parser, 4) { + return false + } + + // Is it the end of the stream? + if is_z(parser.buffer, parser.buffer_pos) { + return yaml_parser_fetch_stream_end(parser) + } + + // Is it a directive? + if parser.mark.column == 0 && parser.buffer[parser.buffer_pos] == '%' { + return yaml_parser_fetch_directive(parser) + } + + buf := parser.buffer + pos := parser.buffer_pos + + // Is it the document start indicator? + if parser.mark.column == 0 && buf[pos] == '-' && buf[pos+1] == '-' && buf[pos+2] == '-' && is_blankz(buf, pos+3) { + return yaml_parser_fetch_document_indicator(parser, yaml_DOCUMENT_START_TOKEN) + } + + // Is it the document end indicator? + if parser.mark.column == 0 && buf[pos] == '.' && buf[pos+1] == '.' && buf[pos+2] == '.' && is_blankz(buf, pos+3) { + return yaml_parser_fetch_document_indicator(parser, yaml_DOCUMENT_END_TOKEN) + } + + comment_mark := parser.mark + if len(parser.tokens) > 0 && (parser.flow_level == 0 && buf[pos] == ':' || parser.flow_level > 0 && buf[pos] == ',') { + // Associate any following comments with the prior token. + comment_mark = parser.tokens[len(parser.tokens)-1].start_mark + } + defer func() { + if !ok { + return + } + if len(parser.tokens) > 0 && parser.tokens[len(parser.tokens)-1].typ == yaml_BLOCK_ENTRY_TOKEN { + // Sequence indicators alone have no line comments. It becomes + // a head comment for whatever follows. + return + } + if !yaml_parser_scan_line_comment(parser, comment_mark) { + ok = false + return + } + }() + + // Is it the flow sequence start indicator? + if buf[pos] == '[' { + return yaml_parser_fetch_flow_collection_start(parser, yaml_FLOW_SEQUENCE_START_TOKEN) + } + + // Is it the flow mapping start indicator? + if parser.buffer[parser.buffer_pos] == '{' { + return yaml_parser_fetch_flow_collection_start(parser, yaml_FLOW_MAPPING_START_TOKEN) + } + + // Is it the flow sequence end indicator? + if parser.buffer[parser.buffer_pos] == ']' { + return yaml_parser_fetch_flow_collection_end(parser, + yaml_FLOW_SEQUENCE_END_TOKEN) + } + + // Is it the flow mapping end indicator? + if parser.buffer[parser.buffer_pos] == '}' { + return yaml_parser_fetch_flow_collection_end(parser, + yaml_FLOW_MAPPING_END_TOKEN) + } + + // Is it the flow entry indicator? + if parser.buffer[parser.buffer_pos] == ',' { + return yaml_parser_fetch_flow_entry(parser) + } + + // Is it the block entry indicator? + if parser.buffer[parser.buffer_pos] == '-' && is_blankz(parser.buffer, parser.buffer_pos+1) { + return yaml_parser_fetch_block_entry(parser) + } + + // Is it the key indicator? + if parser.buffer[parser.buffer_pos] == '?' && (parser.flow_level > 0 || is_blankz(parser.buffer, parser.buffer_pos+1)) { + return yaml_parser_fetch_key(parser) + } + + // Is it the value indicator? + if parser.buffer[parser.buffer_pos] == ':' && (parser.flow_level > 0 || is_blankz(parser.buffer, parser.buffer_pos+1)) { + return yaml_parser_fetch_value(parser) + } + + // Is it an alias? + if parser.buffer[parser.buffer_pos] == '*' { + return yaml_parser_fetch_anchor(parser, yaml_ALIAS_TOKEN) + } + + // Is it an anchor? + if parser.buffer[parser.buffer_pos] == '&' { + return yaml_parser_fetch_anchor(parser, yaml_ANCHOR_TOKEN) + } + + // Is it a tag? + if parser.buffer[parser.buffer_pos] == '!' { + return yaml_parser_fetch_tag(parser) + } + + // Is it a literal scalar? + if parser.buffer[parser.buffer_pos] == '|' && parser.flow_level == 0 { + return yaml_parser_fetch_block_scalar(parser, true) + } + + // Is it a folded scalar? + if parser.buffer[parser.buffer_pos] == '>' && parser.flow_level == 0 { + return yaml_parser_fetch_block_scalar(parser, false) + } + + // Is it a single-quoted scalar? + if parser.buffer[parser.buffer_pos] == '\'' { + return yaml_parser_fetch_flow_scalar(parser, true) + } + + // Is it a double-quoted scalar? + if parser.buffer[parser.buffer_pos] == '"' { + return yaml_parser_fetch_flow_scalar(parser, false) + } + + // Is it a plain scalar? + // + // A plain scalar may start with any non-blank characters except + // + // '-', '?', ':', ',', '[', ']', '{', '}', + // '#', '&', '*', '!', '|', '>', '\'', '\"', + // '%', '@', '`'. + // + // In the block context (and, for the '-' indicator, in the flow context + // too), it may also start with the characters + // + // '-', '?', ':' + // + // if it is followed by a non-space character. + // + // The last rule is more restrictive than the specification requires. + // [Go] TODO Make this logic more reasonable. + //switch parser.buffer[parser.buffer_pos] { + //case '-', '?', ':', ',', '?', '-', ',', ':', ']', '[', '}', '{', '&', '#', '!', '*', '>', '|', '"', '\'', '@', '%', '-', '`': + //} + if !(is_blankz(parser.buffer, parser.buffer_pos) || parser.buffer[parser.buffer_pos] == '-' || + parser.buffer[parser.buffer_pos] == '?' || parser.buffer[parser.buffer_pos] == ':' || + parser.buffer[parser.buffer_pos] == ',' || parser.buffer[parser.buffer_pos] == '[' || + parser.buffer[parser.buffer_pos] == ']' || parser.buffer[parser.buffer_pos] == '{' || + parser.buffer[parser.buffer_pos] == '}' || parser.buffer[parser.buffer_pos] == '#' || + parser.buffer[parser.buffer_pos] == '&' || parser.buffer[parser.buffer_pos] == '*' || + parser.buffer[parser.buffer_pos] == '!' || parser.buffer[parser.buffer_pos] == '|' || + parser.buffer[parser.buffer_pos] == '>' || parser.buffer[parser.buffer_pos] == '\'' || + parser.buffer[parser.buffer_pos] == '"' || parser.buffer[parser.buffer_pos] == '%' || + parser.buffer[parser.buffer_pos] == '@' || parser.buffer[parser.buffer_pos] == '`') || + (parser.buffer[parser.buffer_pos] == '-' && !is_blank(parser.buffer, parser.buffer_pos+1)) || + (parser.flow_level == 0 && + (parser.buffer[parser.buffer_pos] == '?' || parser.buffer[parser.buffer_pos] == ':') && + !is_blankz(parser.buffer, parser.buffer_pos+1)) { + return yaml_parser_fetch_plain_scalar(parser) + } + + // If we don't determine the token type so far, it is an error. + return yaml_parser_set_scanner_error(parser, + "while scanning for the next token", parser.mark, + "found character that cannot start any token") +} + +func yaml_simple_key_is_valid(parser *yaml_parser_t, simple_key *yaml_simple_key_t) (valid, ok bool) { + if !simple_key.possible { + return false, true + } + + // The 1.2 specification says: + // + // "If the ? indicator is omitted, parsing needs to see past the + // implicit key to recognize it as such. To limit the amount of + // lookahead required, the “:” indicator must appear at most 1024 + // Unicode characters beyond the start of the key. In addition, the key + // is restricted to a single line." + // + if simple_key.mark.line < parser.mark.line || simple_key.mark.index+1024 < parser.mark.index { + // Check if the potential simple key to be removed is required. + if simple_key.required { + return false, yaml_parser_set_scanner_error(parser, + "while scanning a simple key", simple_key.mark, + "could not find expected ':'") + } + simple_key.possible = false + return false, true + } + return true, true +} + +// Check if a simple key may start at the current position and add it if +// needed. +func yaml_parser_save_simple_key(parser *yaml_parser_t) bool { + // A simple key is required at the current position if the scanner is in + // the block context and the current column coincides with the indentation + // level. + + required := parser.flow_level == 0 && parser.indent == parser.mark.column + + // + // If the current position may start a simple key, save it. + // + if parser.simple_key_allowed { + simple_key := yaml_simple_key_t{ + possible: true, + required: required, + token_number: parser.tokens_parsed + (len(parser.tokens) - parser.tokens_head), + mark: parser.mark, + } + + if !yaml_parser_remove_simple_key(parser) { + return false + } + parser.simple_keys[len(parser.simple_keys)-1] = simple_key + parser.simple_keys_by_tok[simple_key.token_number] = len(parser.simple_keys) - 1 + } + return true +} + +// Remove a potential simple key at the current flow level. +func yaml_parser_remove_simple_key(parser *yaml_parser_t) bool { + i := len(parser.simple_keys) - 1 + if parser.simple_keys[i].possible { + // If the key is required, it is an error. + if parser.simple_keys[i].required { + return yaml_parser_set_scanner_error(parser, + "while scanning a simple key", parser.simple_keys[i].mark, + "could not find expected ':'") + } + // Remove the key from the stack. + parser.simple_keys[i].possible = false + delete(parser.simple_keys_by_tok, parser.simple_keys[i].token_number) + } + return true +} + +// max_flow_level limits the flow_level +const max_flow_level = 10000 + +// Increase the flow level and resize the simple key list if needed. +func yaml_parser_increase_flow_level(parser *yaml_parser_t) bool { + // Reset the simple key on the next level. + parser.simple_keys = append(parser.simple_keys, yaml_simple_key_t{ + possible: false, + required: false, + token_number: parser.tokens_parsed + (len(parser.tokens) - parser.tokens_head), + mark: parser.mark, + }) + + // Increase the flow level. + parser.flow_level++ + if parser.flow_level > max_flow_level { + return yaml_parser_set_scanner_error(parser, + "while increasing flow level", parser.simple_keys[len(parser.simple_keys)-1].mark, + fmt.Sprintf("exceeded max depth of %d", max_flow_level)) + } + return true +} + +// Decrease the flow level. +func yaml_parser_decrease_flow_level(parser *yaml_parser_t) bool { + if parser.flow_level > 0 { + parser.flow_level-- + last := len(parser.simple_keys) - 1 + delete(parser.simple_keys_by_tok, parser.simple_keys[last].token_number) + parser.simple_keys = parser.simple_keys[:last] + } + return true +} + +// max_indents limits the indents stack size +const max_indents = 10000 + +// Push the current indentation level to the stack and set the new level +// the current column is greater than the indentation level. In this case, +// append or insert the specified token into the token queue. +func yaml_parser_roll_indent(parser *yaml_parser_t, column, number int, typ yaml_token_type_t, mark yaml_mark_t) bool { + // In the flow context, do nothing. + if parser.flow_level > 0 { + return true + } + + if parser.indent < column { + // Push the current indentation level to the stack and set the new + // indentation level. + parser.indents = append(parser.indents, parser.indent) + parser.indent = column + if len(parser.indents) > max_indents { + return yaml_parser_set_scanner_error(parser, + "while increasing indent level", parser.simple_keys[len(parser.simple_keys)-1].mark, + fmt.Sprintf("exceeded max depth of %d", max_indents)) + } + + // Create a token and insert it into the queue. + token := yaml_token_t{ + typ: typ, + start_mark: mark, + end_mark: mark, + } + if number > -1 { + number -= parser.tokens_parsed + } + yaml_insert_token(parser, number, &token) + } + return true +} + +// Pop indentation levels from the indents stack until the current level +// becomes less or equal to the column. For each indentation level, append +// the BLOCK-END token. +func yaml_parser_unroll_indent(parser *yaml_parser_t, column int, scan_mark yaml_mark_t) bool { + // In the flow context, do nothing. + if parser.flow_level > 0 { + return true + } + + block_mark := scan_mark + block_mark.index-- + + // Loop through the indentation levels in the stack. + for parser.indent > column { + + // [Go] Reposition the end token before potential following + // foot comments of parent blocks. For that, search + // backwards for recent comments that were at the same + // indent as the block that is ending now. + stop_index := block_mark.index + for i := len(parser.comments) - 1; i >= 0; i-- { + comment := &parser.comments[i] + + if comment.end_mark.index < stop_index { + // Don't go back beyond the start of the comment/whitespace scan, unless column < 0. + // If requested indent column is < 0, then the document is over and everything else + // is a foot anyway. + break + } + if comment.start_mark.column == parser.indent+1 { + // This is a good match. But maybe there's a former comment + // at that same indent level, so keep searching. + block_mark = comment.start_mark + } + + // While the end of the former comment matches with + // the start of the following one, we know there's + // nothing in between and scanning is still safe. + stop_index = comment.scan_mark.index + } + + // Create a token and append it to the queue. + token := yaml_token_t{ + typ: yaml_BLOCK_END_TOKEN, + start_mark: block_mark, + end_mark: block_mark, + } + yaml_insert_token(parser, -1, &token) + + // Pop the indentation level. + parser.indent = parser.indents[len(parser.indents)-1] + parser.indents = parser.indents[:len(parser.indents)-1] + } + return true +} + +// Initialize the scanner and produce the STREAM-START token. +func yaml_parser_fetch_stream_start(parser *yaml_parser_t) bool { + + // Set the initial indentation. + parser.indent = -1 + + // Initialize the simple key stack. + parser.simple_keys = append(parser.simple_keys, yaml_simple_key_t{}) + + parser.simple_keys_by_tok = make(map[int]int) + + // A simple key is allowed at the beginning of the stream. + parser.simple_key_allowed = true + + // We have started. + parser.stream_start_produced = true + + // Create the STREAM-START token and append it to the queue. + token := yaml_token_t{ + typ: yaml_STREAM_START_TOKEN, + start_mark: parser.mark, + end_mark: parser.mark, + encoding: parser.encoding, + } + yaml_insert_token(parser, -1, &token) + return true +} + +// Produce the STREAM-END token and shut down the scanner. +func yaml_parser_fetch_stream_end(parser *yaml_parser_t) bool { + + // Force new line. + if parser.mark.column != 0 { + parser.mark.column = 0 + parser.mark.line++ + } + + // Reset the indentation level. + if !yaml_parser_unroll_indent(parser, -1, parser.mark) { + return false + } + + // Reset simple keys. + if !yaml_parser_remove_simple_key(parser) { + return false + } + + parser.simple_key_allowed = false + + // Create the STREAM-END token and append it to the queue. + token := yaml_token_t{ + typ: yaml_STREAM_END_TOKEN, + start_mark: parser.mark, + end_mark: parser.mark, + } + yaml_insert_token(parser, -1, &token) + return true +} + +// Produce a VERSION-DIRECTIVE or TAG-DIRECTIVE token. +func yaml_parser_fetch_directive(parser *yaml_parser_t) bool { + // Reset the indentation level. + if !yaml_parser_unroll_indent(parser, -1, parser.mark) { + return false + } + + // Reset simple keys. + if !yaml_parser_remove_simple_key(parser) { + return false + } + + parser.simple_key_allowed = false + + // Create the YAML-DIRECTIVE or TAG-DIRECTIVE token. + token := yaml_token_t{} + if !yaml_parser_scan_directive(parser, &token) { + return false + } + // Append the token to the queue. + yaml_insert_token(parser, -1, &token) + return true +} + +// Produce the DOCUMENT-START or DOCUMENT-END token. +func yaml_parser_fetch_document_indicator(parser *yaml_parser_t, typ yaml_token_type_t) bool { + // Reset the indentation level. + if !yaml_parser_unroll_indent(parser, -1, parser.mark) { + return false + } + + // Reset simple keys. + if !yaml_parser_remove_simple_key(parser) { + return false + } + + parser.simple_key_allowed = false + + // Consume the token. + start_mark := parser.mark + + skip(parser) + skip(parser) + skip(parser) + + end_mark := parser.mark + + // Create the DOCUMENT-START or DOCUMENT-END token. + token := yaml_token_t{ + typ: typ, + start_mark: start_mark, + end_mark: end_mark, + } + // Append the token to the queue. + yaml_insert_token(parser, -1, &token) + return true +} + +// Produce the FLOW-SEQUENCE-START or FLOW-MAPPING-START token. +func yaml_parser_fetch_flow_collection_start(parser *yaml_parser_t, typ yaml_token_type_t) bool { + + // The indicators '[' and '{' may start a simple key. + if !yaml_parser_save_simple_key(parser) { + return false + } + + // Increase the flow level. + if !yaml_parser_increase_flow_level(parser) { + return false + } + + // A simple key may follow the indicators '[' and '{'. + parser.simple_key_allowed = true + + // Consume the token. + start_mark := parser.mark + skip(parser) + end_mark := parser.mark + + // Create the FLOW-SEQUENCE-START of FLOW-MAPPING-START token. + token := yaml_token_t{ + typ: typ, + start_mark: start_mark, + end_mark: end_mark, + } + // Append the token to the queue. + yaml_insert_token(parser, -1, &token) + return true +} + +// Produce the FLOW-SEQUENCE-END or FLOW-MAPPING-END token. +func yaml_parser_fetch_flow_collection_end(parser *yaml_parser_t, typ yaml_token_type_t) bool { + // Reset any potential simple key on the current flow level. + if !yaml_parser_remove_simple_key(parser) { + return false + } + + // Decrease the flow level. + if !yaml_parser_decrease_flow_level(parser) { + return false + } + + // No simple keys after the indicators ']' and '}'. + parser.simple_key_allowed = false + + // Consume the token. + + start_mark := parser.mark + skip(parser) + end_mark := parser.mark + + // Create the FLOW-SEQUENCE-END of FLOW-MAPPING-END token. + token := yaml_token_t{ + typ: typ, + start_mark: start_mark, + end_mark: end_mark, + } + // Append the token to the queue. + yaml_insert_token(parser, -1, &token) + return true +} + +// Produce the FLOW-ENTRY token. +func yaml_parser_fetch_flow_entry(parser *yaml_parser_t) bool { + // Reset any potential simple keys on the current flow level. + if !yaml_parser_remove_simple_key(parser) { + return false + } + + // Simple keys are allowed after ','. + parser.simple_key_allowed = true + + // Consume the token. + start_mark := parser.mark + skip(parser) + end_mark := parser.mark + + // Create the FLOW-ENTRY token and append it to the queue. + token := yaml_token_t{ + typ: yaml_FLOW_ENTRY_TOKEN, + start_mark: start_mark, + end_mark: end_mark, + } + yaml_insert_token(parser, -1, &token) + return true +} + +// Produce the BLOCK-ENTRY token. +func yaml_parser_fetch_block_entry(parser *yaml_parser_t) bool { + // Check if the scanner is in the block context. + if parser.flow_level == 0 { + // Check if we are allowed to start a new entry. + if !parser.simple_key_allowed { + return yaml_parser_set_scanner_error(parser, "", parser.mark, + "block sequence entries are not allowed in this context") + } + // Add the BLOCK-SEQUENCE-START token if needed. + if !yaml_parser_roll_indent(parser, parser.mark.column, -1, yaml_BLOCK_SEQUENCE_START_TOKEN, parser.mark) { + return false + } + } else { + // It is an error for the '-' indicator to occur in the flow context, + // but we let the Parser detect and report about it because the Parser + // is able to point to the context. + } + + // Reset any potential simple keys on the current flow level. + if !yaml_parser_remove_simple_key(parser) { + return false + } + + // Simple keys are allowed after '-'. + parser.simple_key_allowed = true + + // Consume the token. + start_mark := parser.mark + skip(parser) + end_mark := parser.mark + + // Create the BLOCK-ENTRY token and append it to the queue. + token := yaml_token_t{ + typ: yaml_BLOCK_ENTRY_TOKEN, + start_mark: start_mark, + end_mark: end_mark, + } + yaml_insert_token(parser, -1, &token) + return true +} + +// Produce the KEY token. +func yaml_parser_fetch_key(parser *yaml_parser_t) bool { + + // In the block context, additional checks are required. + if parser.flow_level == 0 { + // Check if we are allowed to start a new key (not nessesary simple). + if !parser.simple_key_allowed { + return yaml_parser_set_scanner_error(parser, "", parser.mark, + "mapping keys are not allowed in this context") + } + // Add the BLOCK-MAPPING-START token if needed. + if !yaml_parser_roll_indent(parser, parser.mark.column, -1, yaml_BLOCK_MAPPING_START_TOKEN, parser.mark) { + return false + } + } + + // Reset any potential simple keys on the current flow level. + if !yaml_parser_remove_simple_key(parser) { + return false + } + + // Simple keys are allowed after '?' in the block context. + parser.simple_key_allowed = parser.flow_level == 0 + + // Consume the token. + start_mark := parser.mark + skip(parser) + end_mark := parser.mark + + // Create the KEY token and append it to the queue. + token := yaml_token_t{ + typ: yaml_KEY_TOKEN, + start_mark: start_mark, + end_mark: end_mark, + } + yaml_insert_token(parser, -1, &token) + return true +} + +// Produce the VALUE token. +func yaml_parser_fetch_value(parser *yaml_parser_t) bool { + + simple_key := &parser.simple_keys[len(parser.simple_keys)-1] + + // Have we found a simple key? + if valid, ok := yaml_simple_key_is_valid(parser, simple_key); !ok { + return false + + } else if valid { + + // Create the KEY token and insert it into the queue. + token := yaml_token_t{ + typ: yaml_KEY_TOKEN, + start_mark: simple_key.mark, + end_mark: simple_key.mark, + } + yaml_insert_token(parser, simple_key.token_number-parser.tokens_parsed, &token) + + // In the block context, we may need to add the BLOCK-MAPPING-START token. + if !yaml_parser_roll_indent(parser, simple_key.mark.column, + simple_key.token_number, + yaml_BLOCK_MAPPING_START_TOKEN, simple_key.mark) { + return false + } + + // Remove the simple key. + simple_key.possible = false + delete(parser.simple_keys_by_tok, simple_key.token_number) + + // A simple key cannot follow another simple key. + parser.simple_key_allowed = false + + } else { + // The ':' indicator follows a complex key. + + // In the block context, extra checks are required. + if parser.flow_level == 0 { + + // Check if we are allowed to start a complex value. + if !parser.simple_key_allowed { + return yaml_parser_set_scanner_error(parser, "", parser.mark, + "mapping values are not allowed in this context") + } + + // Add the BLOCK-MAPPING-START token if needed. + if !yaml_parser_roll_indent(parser, parser.mark.column, -1, yaml_BLOCK_MAPPING_START_TOKEN, parser.mark) { + return false + } + } + + // Simple keys after ':' are allowed in the block context. + parser.simple_key_allowed = parser.flow_level == 0 + } + + // Consume the token. + start_mark := parser.mark + skip(parser) + end_mark := parser.mark + + // Create the VALUE token and append it to the queue. + token := yaml_token_t{ + typ: yaml_VALUE_TOKEN, + start_mark: start_mark, + end_mark: end_mark, + } + yaml_insert_token(parser, -1, &token) + return true +} + +// Produce the ALIAS or ANCHOR token. +func yaml_parser_fetch_anchor(parser *yaml_parser_t, typ yaml_token_type_t) bool { + // An anchor or an alias could be a simple key. + if !yaml_parser_save_simple_key(parser) { + return false + } + + // A simple key cannot follow an anchor or an alias. + parser.simple_key_allowed = false + + // Create the ALIAS or ANCHOR token and append it to the queue. + var token yaml_token_t + if !yaml_parser_scan_anchor(parser, &token, typ) { + return false + } + yaml_insert_token(parser, -1, &token) + return true +} + +// Produce the TAG token. +func yaml_parser_fetch_tag(parser *yaml_parser_t) bool { + // A tag could be a simple key. + if !yaml_parser_save_simple_key(parser) { + return false + } + + // A simple key cannot follow a tag. + parser.simple_key_allowed = false + + // Create the TAG token and append it to the queue. + var token yaml_token_t + if !yaml_parser_scan_tag(parser, &token) { + return false + } + yaml_insert_token(parser, -1, &token) + return true +} + +// Produce the SCALAR(...,literal) or SCALAR(...,folded) tokens. +func yaml_parser_fetch_block_scalar(parser *yaml_parser_t, literal bool) bool { + // Remove any potential simple keys. + if !yaml_parser_remove_simple_key(parser) { + return false + } + + // A simple key may follow a block scalar. + parser.simple_key_allowed = true + + // Create the SCALAR token and append it to the queue. + var token yaml_token_t + if !yaml_parser_scan_block_scalar(parser, &token, literal) { + return false + } + yaml_insert_token(parser, -1, &token) + return true +} + +// Produce the SCALAR(...,single-quoted) or SCALAR(...,double-quoted) tokens. +func yaml_parser_fetch_flow_scalar(parser *yaml_parser_t, single bool) bool { + // A plain scalar could be a simple key. + if !yaml_parser_save_simple_key(parser) { + return false + } + + // A simple key cannot follow a flow scalar. + parser.simple_key_allowed = false + + // Create the SCALAR token and append it to the queue. + var token yaml_token_t + if !yaml_parser_scan_flow_scalar(parser, &token, single) { + return false + } + yaml_insert_token(parser, -1, &token) + return true +} + +// Produce the SCALAR(...,plain) token. +func yaml_parser_fetch_plain_scalar(parser *yaml_parser_t) bool { + // A plain scalar could be a simple key. + if !yaml_parser_save_simple_key(parser) { + return false + } + + // A simple key cannot follow a flow scalar. + parser.simple_key_allowed = false + + // Create the SCALAR token and append it to the queue. + var token yaml_token_t + if !yaml_parser_scan_plain_scalar(parser, &token) { + return false + } + yaml_insert_token(parser, -1, &token) + return true +} + +// Eat whitespaces and comments until the next token is found. +func yaml_parser_scan_to_next_token(parser *yaml_parser_t) bool { + + scan_mark := parser.mark + + // Until the next token is not found. + for { + // Allow the BOM mark to start a line. + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + if parser.mark.column == 0 && is_bom(parser.buffer, parser.buffer_pos) { + skip(parser) + } + + // Eat whitespaces. + // Tabs are allowed: + // - in the flow context + // - in the block context, but not at the beginning of the line or + // after '-', '?', or ':' (complex value). + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + + for parser.buffer[parser.buffer_pos] == ' ' || ((parser.flow_level > 0 || !parser.simple_key_allowed) && parser.buffer[parser.buffer_pos] == '\t') { + skip(parser) + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + } + + // Check if we just had a line comment under a sequence entry that + // looks more like a header to the following content. Similar to this: + // + // - # The comment + // - Some data + // + // If so, transform the line comment to a head comment and reposition. + if len(parser.comments) > 0 && len(parser.tokens) > 1 { + tokenA := parser.tokens[len(parser.tokens)-2] + tokenB := parser.tokens[len(parser.tokens)-1] + comment := &parser.comments[len(parser.comments)-1] + if tokenA.typ == yaml_BLOCK_SEQUENCE_START_TOKEN && tokenB.typ == yaml_BLOCK_ENTRY_TOKEN && len(comment.line) > 0 && !is_break(parser.buffer, parser.buffer_pos) { + // If it was in the prior line, reposition so it becomes a + // header of the follow up token. Otherwise, keep it in place + // so it becomes a header of the former. + comment.head = comment.line + comment.line = nil + if comment.start_mark.line == parser.mark.line-1 { + comment.token_mark = parser.mark + } + } + } + + // Eat a comment until a line break. + if parser.buffer[parser.buffer_pos] == '#' { + if !yaml_parser_scan_comments(parser, scan_mark) { + return false + } + } + + // If it is a line break, eat it. + if is_break(parser.buffer, parser.buffer_pos) { + if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) { + return false + } + skip_line(parser) + + // In the block context, a new line may start a simple key. + if parser.flow_level == 0 { + parser.simple_key_allowed = true + } + } else { + break // We have found a token. + } + } + + return true +} + +// Scan a YAML-DIRECTIVE or TAG-DIRECTIVE token. +// +// Scope: +// %YAML 1.1 # a comment \n +// ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ +// %TAG !yaml! tag:yaml.org,2002: \n +// ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ +// +func yaml_parser_scan_directive(parser *yaml_parser_t, token *yaml_token_t) bool { + // Eat '%'. + start_mark := parser.mark + skip(parser) + + // Scan the directive name. + var name []byte + if !yaml_parser_scan_directive_name(parser, start_mark, &name) { + return false + } + + // Is it a YAML directive? + if bytes.Equal(name, []byte("YAML")) { + // Scan the VERSION directive value. + var major, minor int8 + if !yaml_parser_scan_version_directive_value(parser, start_mark, &major, &minor) { + return false + } + end_mark := parser.mark + + // Create a VERSION-DIRECTIVE token. + *token = yaml_token_t{ + typ: yaml_VERSION_DIRECTIVE_TOKEN, + start_mark: start_mark, + end_mark: end_mark, + major: major, + minor: minor, + } + + // Is it a TAG directive? + } else if bytes.Equal(name, []byte("TAG")) { + // Scan the TAG directive value. + var handle, prefix []byte + if !yaml_parser_scan_tag_directive_value(parser, start_mark, &handle, &prefix) { + return false + } + end_mark := parser.mark + + // Create a TAG-DIRECTIVE token. + *token = yaml_token_t{ + typ: yaml_TAG_DIRECTIVE_TOKEN, + start_mark: start_mark, + end_mark: end_mark, + value: handle, + prefix: prefix, + } + + // Unknown directive. + } else { + yaml_parser_set_scanner_error(parser, "while scanning a directive", + start_mark, "found unknown directive name") + return false + } + + // Eat the rest of the line including any comments. + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + + for is_blank(parser.buffer, parser.buffer_pos) { + skip(parser) + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + } + + if parser.buffer[parser.buffer_pos] == '#' { + // [Go] Discard this inline comment for the time being. + //if !yaml_parser_scan_line_comment(parser, start_mark) { + // return false + //} + for !is_breakz(parser.buffer, parser.buffer_pos) { + skip(parser) + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + } + } + + // Check if we are at the end of the line. + if !is_breakz(parser.buffer, parser.buffer_pos) { + yaml_parser_set_scanner_error(parser, "while scanning a directive", + start_mark, "did not find expected comment or line break") + return false + } + + // Eat a line break. + if is_break(parser.buffer, parser.buffer_pos) { + if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) { + return false + } + skip_line(parser) + } + + return true +} + +// Scan the directive name. +// +// Scope: +// %YAML 1.1 # a comment \n +// ^^^^ +// %TAG !yaml! tag:yaml.org,2002: \n +// ^^^ +// +func yaml_parser_scan_directive_name(parser *yaml_parser_t, start_mark yaml_mark_t, name *[]byte) bool { + // Consume the directive name. + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + + var s []byte + for is_alpha(parser.buffer, parser.buffer_pos) { + s = read(parser, s) + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + } + + // Check if the name is empty. + if len(s) == 0 { + yaml_parser_set_scanner_error(parser, "while scanning a directive", + start_mark, "could not find expected directive name") + return false + } + + // Check for an blank character after the name. + if !is_blankz(parser.buffer, parser.buffer_pos) { + yaml_parser_set_scanner_error(parser, "while scanning a directive", + start_mark, "found unexpected non-alphabetical character") + return false + } + *name = s + return true +} + +// Scan the value of VERSION-DIRECTIVE. +// +// Scope: +// %YAML 1.1 # a comment \n +// ^^^^^^ +func yaml_parser_scan_version_directive_value(parser *yaml_parser_t, start_mark yaml_mark_t, major, minor *int8) bool { + // Eat whitespaces. + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + for is_blank(parser.buffer, parser.buffer_pos) { + skip(parser) + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + } + + // Consume the major version number. + if !yaml_parser_scan_version_directive_number(parser, start_mark, major) { + return false + } + + // Eat '.'. + if parser.buffer[parser.buffer_pos] != '.' { + return yaml_parser_set_scanner_error(parser, "while scanning a %YAML directive", + start_mark, "did not find expected digit or '.' character") + } + + skip(parser) + + // Consume the minor version number. + if !yaml_parser_scan_version_directive_number(parser, start_mark, minor) { + return false + } + return true +} + +const max_number_length = 2 + +// Scan the version number of VERSION-DIRECTIVE. +// +// Scope: +// %YAML 1.1 # a comment \n +// ^ +// %YAML 1.1 # a comment \n +// ^ +func yaml_parser_scan_version_directive_number(parser *yaml_parser_t, start_mark yaml_mark_t, number *int8) bool { + + // Repeat while the next character is digit. + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + var value, length int8 + for is_digit(parser.buffer, parser.buffer_pos) { + // Check if the number is too long. + length++ + if length > max_number_length { + return yaml_parser_set_scanner_error(parser, "while scanning a %YAML directive", + start_mark, "found extremely long version number") + } + value = value*10 + int8(as_digit(parser.buffer, parser.buffer_pos)) + skip(parser) + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + } + + // Check if the number was present. + if length == 0 { + return yaml_parser_set_scanner_error(parser, "while scanning a %YAML directive", + start_mark, "did not find expected version number") + } + *number = value + return true +} + +// Scan the value of a TAG-DIRECTIVE token. +// +// Scope: +// %TAG !yaml! tag:yaml.org,2002: \n +// ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ +// +func yaml_parser_scan_tag_directive_value(parser *yaml_parser_t, start_mark yaml_mark_t, handle, prefix *[]byte) bool { + var handle_value, prefix_value []byte + + // Eat whitespaces. + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + + for is_blank(parser.buffer, parser.buffer_pos) { + skip(parser) + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + } + + // Scan a handle. + if !yaml_parser_scan_tag_handle(parser, true, start_mark, &handle_value) { + return false + } + + // Expect a whitespace. + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + if !is_blank(parser.buffer, parser.buffer_pos) { + yaml_parser_set_scanner_error(parser, "while scanning a %TAG directive", + start_mark, "did not find expected whitespace") + return false + } + + // Eat whitespaces. + for is_blank(parser.buffer, parser.buffer_pos) { + skip(parser) + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + } + + // Scan a prefix. + if !yaml_parser_scan_tag_uri(parser, true, nil, start_mark, &prefix_value) { + return false + } + + // Expect a whitespace or line break. + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + if !is_blankz(parser.buffer, parser.buffer_pos) { + yaml_parser_set_scanner_error(parser, "while scanning a %TAG directive", + start_mark, "did not find expected whitespace or line break") + return false + } + + *handle = handle_value + *prefix = prefix_value + return true +} + +func yaml_parser_scan_anchor(parser *yaml_parser_t, token *yaml_token_t, typ yaml_token_type_t) bool { + var s []byte + + // Eat the indicator character. + start_mark := parser.mark + skip(parser) + + // Consume the value. + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + + for is_alpha(parser.buffer, parser.buffer_pos) { + s = read(parser, s) + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + } + + end_mark := parser.mark + + /* + * Check if length of the anchor is greater than 0 and it is followed by + * a whitespace character or one of the indicators: + * + * '?', ':', ',', ']', '}', '%', '@', '`'. + */ + + if len(s) == 0 || + !(is_blankz(parser.buffer, parser.buffer_pos) || parser.buffer[parser.buffer_pos] == '?' || + parser.buffer[parser.buffer_pos] == ':' || parser.buffer[parser.buffer_pos] == ',' || + parser.buffer[parser.buffer_pos] == ']' || parser.buffer[parser.buffer_pos] == '}' || + parser.buffer[parser.buffer_pos] == '%' || parser.buffer[parser.buffer_pos] == '@' || + parser.buffer[parser.buffer_pos] == '`') { + context := "while scanning an alias" + if typ == yaml_ANCHOR_TOKEN { + context = "while scanning an anchor" + } + yaml_parser_set_scanner_error(parser, context, start_mark, + "did not find expected alphabetic or numeric character") + return false + } + + // Create a token. + *token = yaml_token_t{ + typ: typ, + start_mark: start_mark, + end_mark: end_mark, + value: s, + } + + return true +} + +/* + * Scan a TAG token. + */ + +func yaml_parser_scan_tag(parser *yaml_parser_t, token *yaml_token_t) bool { + var handle, suffix []byte + + start_mark := parser.mark + + // Check if the tag is in the canonical form. + if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) { + return false + } + + if parser.buffer[parser.buffer_pos+1] == '<' { + // Keep the handle as '' + + // Eat '!<' + skip(parser) + skip(parser) + + // Consume the tag value. + if !yaml_parser_scan_tag_uri(parser, false, nil, start_mark, &suffix) { + return false + } + + // Check for '>' and eat it. + if parser.buffer[parser.buffer_pos] != '>' { + yaml_parser_set_scanner_error(parser, "while scanning a tag", + start_mark, "did not find the expected '>'") + return false + } + + skip(parser) + } else { + // The tag has either the '!suffix' or the '!handle!suffix' form. + + // First, try to scan a handle. + if !yaml_parser_scan_tag_handle(parser, false, start_mark, &handle) { + return false + } + + // Check if it is, indeed, handle. + if handle[0] == '!' && len(handle) > 1 && handle[len(handle)-1] == '!' { + // Scan the suffix now. + if !yaml_parser_scan_tag_uri(parser, false, nil, start_mark, &suffix) { + return false + } + } else { + // It wasn't a handle after all. Scan the rest of the tag. + if !yaml_parser_scan_tag_uri(parser, false, handle, start_mark, &suffix) { + return false + } + + // Set the handle to '!'. + handle = []byte{'!'} + + // A special case: the '!' tag. Set the handle to '' and the + // suffix to '!'. + if len(suffix) == 0 { + handle, suffix = suffix, handle + } + } + } + + // Check the character which ends the tag. + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + if !is_blankz(parser.buffer, parser.buffer_pos) { + yaml_parser_set_scanner_error(parser, "while scanning a tag", + start_mark, "did not find expected whitespace or line break") + return false + } + + end_mark := parser.mark + + // Create a token. + *token = yaml_token_t{ + typ: yaml_TAG_TOKEN, + start_mark: start_mark, + end_mark: end_mark, + value: handle, + suffix: suffix, + } + return true +} + +// Scan a tag handle. +func yaml_parser_scan_tag_handle(parser *yaml_parser_t, directive bool, start_mark yaml_mark_t, handle *[]byte) bool { + // Check the initial '!' character. + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + if parser.buffer[parser.buffer_pos] != '!' { + yaml_parser_set_scanner_tag_error(parser, directive, + start_mark, "did not find expected '!'") + return false + } + + var s []byte + + // Copy the '!' character. + s = read(parser, s) + + // Copy all subsequent alphabetical and numerical characters. + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + for is_alpha(parser.buffer, parser.buffer_pos) { + s = read(parser, s) + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + } + + // Check if the trailing character is '!' and copy it. + if parser.buffer[parser.buffer_pos] == '!' { + s = read(parser, s) + } else { + // It's either the '!' tag or not really a tag handle. If it's a %TAG + // directive, it's an error. If it's a tag token, it must be a part of URI. + if directive && string(s) != "!" { + yaml_parser_set_scanner_tag_error(parser, directive, + start_mark, "did not find expected '!'") + return false + } + } + + *handle = s + return true +} + +// Scan a tag. +func yaml_parser_scan_tag_uri(parser *yaml_parser_t, directive bool, head []byte, start_mark yaml_mark_t, uri *[]byte) bool { + //size_t length = head ? strlen((char *)head) : 0 + var s []byte + hasTag := len(head) > 0 + + // Copy the head if needed. + // + // Note that we don't copy the leading '!' character. + if len(head) > 1 { + s = append(s, head[1:]...) + } + + // Scan the tag. + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + + // The set of characters that may appear in URI is as follows: + // + // '0'-'9', 'A'-'Z', 'a'-'z', '_', '-', ';', '/', '?', ':', '@', '&', + // '=', '+', '$', ',', '.', '!', '~', '*', '\'', '(', ')', '[', ']', + // '%'. + // [Go] TODO Convert this into more reasonable logic. + for is_alpha(parser.buffer, parser.buffer_pos) || parser.buffer[parser.buffer_pos] == ';' || + parser.buffer[parser.buffer_pos] == '/' || parser.buffer[parser.buffer_pos] == '?' || + parser.buffer[parser.buffer_pos] == ':' || parser.buffer[parser.buffer_pos] == '@' || + parser.buffer[parser.buffer_pos] == '&' || parser.buffer[parser.buffer_pos] == '=' || + parser.buffer[parser.buffer_pos] == '+' || parser.buffer[parser.buffer_pos] == '$' || + parser.buffer[parser.buffer_pos] == ',' || parser.buffer[parser.buffer_pos] == '.' || + parser.buffer[parser.buffer_pos] == '!' || parser.buffer[parser.buffer_pos] == '~' || + parser.buffer[parser.buffer_pos] == '*' || parser.buffer[parser.buffer_pos] == '\'' || + parser.buffer[parser.buffer_pos] == '(' || parser.buffer[parser.buffer_pos] == ')' || + parser.buffer[parser.buffer_pos] == '[' || parser.buffer[parser.buffer_pos] == ']' || + parser.buffer[parser.buffer_pos] == '%' { + // Check if it is a URI-escape sequence. + if parser.buffer[parser.buffer_pos] == '%' { + if !yaml_parser_scan_uri_escapes(parser, directive, start_mark, &s) { + return false + } + } else { + s = read(parser, s) + } + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + hasTag = true + } + + if !hasTag { + yaml_parser_set_scanner_tag_error(parser, directive, + start_mark, "did not find expected tag URI") + return false + } + *uri = s + return true +} + +// Decode an URI-escape sequence corresponding to a single UTF-8 character. +func yaml_parser_scan_uri_escapes(parser *yaml_parser_t, directive bool, start_mark yaml_mark_t, s *[]byte) bool { + + // Decode the required number of characters. + w := 1024 + for w > 0 { + // Check for a URI-escaped octet. + if parser.unread < 3 && !yaml_parser_update_buffer(parser, 3) { + return false + } + + if !(parser.buffer[parser.buffer_pos] == '%' && + is_hex(parser.buffer, parser.buffer_pos+1) && + is_hex(parser.buffer, parser.buffer_pos+2)) { + return yaml_parser_set_scanner_tag_error(parser, directive, + start_mark, "did not find URI escaped octet") + } + + // Get the octet. + octet := byte((as_hex(parser.buffer, parser.buffer_pos+1) << 4) + as_hex(parser.buffer, parser.buffer_pos+2)) + + // If it is the leading octet, determine the length of the UTF-8 sequence. + if w == 1024 { + w = width(octet) + if w == 0 { + return yaml_parser_set_scanner_tag_error(parser, directive, + start_mark, "found an incorrect leading UTF-8 octet") + } + } else { + // Check if the trailing octet is correct. + if octet&0xC0 != 0x80 { + return yaml_parser_set_scanner_tag_error(parser, directive, + start_mark, "found an incorrect trailing UTF-8 octet") + } + } + + // Copy the octet and move the pointers. + *s = append(*s, octet) + skip(parser) + skip(parser) + skip(parser) + w-- + } + return true +} + +// Scan a block scalar. +func yaml_parser_scan_block_scalar(parser *yaml_parser_t, token *yaml_token_t, literal bool) bool { + // Eat the indicator '|' or '>'. + start_mark := parser.mark + skip(parser) + + // Scan the additional block scalar indicators. + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + + // Check for a chomping indicator. + var chomping, increment int + if parser.buffer[parser.buffer_pos] == '+' || parser.buffer[parser.buffer_pos] == '-' { + // Set the chomping method and eat the indicator. + if parser.buffer[parser.buffer_pos] == '+' { + chomping = +1 + } else { + chomping = -1 + } + skip(parser) + + // Check for an indentation indicator. + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + if is_digit(parser.buffer, parser.buffer_pos) { + // Check that the indentation is greater than 0. + if parser.buffer[parser.buffer_pos] == '0' { + yaml_parser_set_scanner_error(parser, "while scanning a block scalar", + start_mark, "found an indentation indicator equal to 0") + return false + } + + // Get the indentation level and eat the indicator. + increment = as_digit(parser.buffer, parser.buffer_pos) + skip(parser) + } + + } else if is_digit(parser.buffer, parser.buffer_pos) { + // Do the same as above, but in the opposite order. + + if parser.buffer[parser.buffer_pos] == '0' { + yaml_parser_set_scanner_error(parser, "while scanning a block scalar", + start_mark, "found an indentation indicator equal to 0") + return false + } + increment = as_digit(parser.buffer, parser.buffer_pos) + skip(parser) + + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + if parser.buffer[parser.buffer_pos] == '+' || parser.buffer[parser.buffer_pos] == '-' { + if parser.buffer[parser.buffer_pos] == '+' { + chomping = +1 + } else { + chomping = -1 + } + skip(parser) + } + } + + // Eat whitespaces and comments to the end of the line. + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + for is_blank(parser.buffer, parser.buffer_pos) { + skip(parser) + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + } + if parser.buffer[parser.buffer_pos] == '#' { + if !yaml_parser_scan_line_comment(parser, start_mark) { + return false + } + for !is_breakz(parser.buffer, parser.buffer_pos) { + skip(parser) + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + } + } + + // Check if we are at the end of the line. + if !is_breakz(parser.buffer, parser.buffer_pos) { + yaml_parser_set_scanner_error(parser, "while scanning a block scalar", + start_mark, "did not find expected comment or line break") + return false + } + + // Eat a line break. + if is_break(parser.buffer, parser.buffer_pos) { + if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) { + return false + } + skip_line(parser) + } + + end_mark := parser.mark + + // Set the indentation level if it was specified. + var indent int + if increment > 0 { + if parser.indent >= 0 { + indent = parser.indent + increment + } else { + indent = increment + } + } + + // Scan the leading line breaks and determine the indentation level if needed. + var s, leading_break, trailing_breaks []byte + if !yaml_parser_scan_block_scalar_breaks(parser, &indent, &trailing_breaks, start_mark, &end_mark) { + return false + } + + // Scan the block scalar content. + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + var leading_blank, trailing_blank bool + for parser.mark.column == indent && !is_z(parser.buffer, parser.buffer_pos) { + // We are at the beginning of a non-empty line. + + // Is it a trailing whitespace? + trailing_blank = is_blank(parser.buffer, parser.buffer_pos) + + // Check if we need to fold the leading line break. + if !literal && !leading_blank && !trailing_blank && len(leading_break) > 0 && leading_break[0] == '\n' { + // Do we need to join the lines by space? + if len(trailing_breaks) == 0 { + s = append(s, ' ') + } + } else { + s = append(s, leading_break...) + } + leading_break = leading_break[:0] + + // Append the remaining line breaks. + s = append(s, trailing_breaks...) + trailing_breaks = trailing_breaks[:0] + + // Is it a leading whitespace? + leading_blank = is_blank(parser.buffer, parser.buffer_pos) + + // Consume the current line. + for !is_breakz(parser.buffer, parser.buffer_pos) { + s = read(parser, s) + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + } + + // Consume the line break. + if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) { + return false + } + + leading_break = read_line(parser, leading_break) + + // Eat the following indentation spaces and line breaks. + if !yaml_parser_scan_block_scalar_breaks(parser, &indent, &trailing_breaks, start_mark, &end_mark) { + return false + } + } + + // Chomp the tail. + if chomping != -1 { + s = append(s, leading_break...) + } + if chomping == 1 { + s = append(s, trailing_breaks...) + } + + // Create a token. + *token = yaml_token_t{ + typ: yaml_SCALAR_TOKEN, + start_mark: start_mark, + end_mark: end_mark, + value: s, + style: yaml_LITERAL_SCALAR_STYLE, + } + if !literal { + token.style = yaml_FOLDED_SCALAR_STYLE + } + return true +} + +// Scan indentation spaces and line breaks for a block scalar. Determine the +// indentation level if needed. +func yaml_parser_scan_block_scalar_breaks(parser *yaml_parser_t, indent *int, breaks *[]byte, start_mark yaml_mark_t, end_mark *yaml_mark_t) bool { + *end_mark = parser.mark + + // Eat the indentation spaces and line breaks. + max_indent := 0 + for { + // Eat the indentation spaces. + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + for (*indent == 0 || parser.mark.column < *indent) && is_space(parser.buffer, parser.buffer_pos) { + skip(parser) + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + } + if parser.mark.column > max_indent { + max_indent = parser.mark.column + } + + // Check for a tab character messing the indentation. + if (*indent == 0 || parser.mark.column < *indent) && is_tab(parser.buffer, parser.buffer_pos) { + return yaml_parser_set_scanner_error(parser, "while scanning a block scalar", + start_mark, "found a tab character where an indentation space is expected") + } + + // Have we found a non-empty line? + if !is_break(parser.buffer, parser.buffer_pos) { + break + } + + // Consume the line break. + if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) { + return false + } + // [Go] Should really be returning breaks instead. + *breaks = read_line(parser, *breaks) + *end_mark = parser.mark + } + + // Determine the indentation level if needed. + if *indent == 0 { + *indent = max_indent + if *indent < parser.indent+1 { + *indent = parser.indent + 1 + } + if *indent < 1 { + *indent = 1 + } + } + return true +} + +// Scan a quoted scalar. +func yaml_parser_scan_flow_scalar(parser *yaml_parser_t, token *yaml_token_t, single bool) bool { + // Eat the left quote. + start_mark := parser.mark + skip(parser) + + // Consume the content of the quoted scalar. + var s, leading_break, trailing_breaks, whitespaces []byte + for { + // Check that there are no document indicators at the beginning of the line. + if parser.unread < 4 && !yaml_parser_update_buffer(parser, 4) { + return false + } + + if parser.mark.column == 0 && + ((parser.buffer[parser.buffer_pos+0] == '-' && + parser.buffer[parser.buffer_pos+1] == '-' && + parser.buffer[parser.buffer_pos+2] == '-') || + (parser.buffer[parser.buffer_pos+0] == '.' && + parser.buffer[parser.buffer_pos+1] == '.' && + parser.buffer[parser.buffer_pos+2] == '.')) && + is_blankz(parser.buffer, parser.buffer_pos+3) { + yaml_parser_set_scanner_error(parser, "while scanning a quoted scalar", + start_mark, "found unexpected document indicator") + return false + } + + // Check for EOF. + if is_z(parser.buffer, parser.buffer_pos) { + yaml_parser_set_scanner_error(parser, "while scanning a quoted scalar", + start_mark, "found unexpected end of stream") + return false + } + + // Consume non-blank characters. + leading_blanks := false + for !is_blankz(parser.buffer, parser.buffer_pos) { + if single && parser.buffer[parser.buffer_pos] == '\'' && parser.buffer[parser.buffer_pos+1] == '\'' { + // Is is an escaped single quote. + s = append(s, '\'') + skip(parser) + skip(parser) + + } else if single && parser.buffer[parser.buffer_pos] == '\'' { + // It is a right single quote. + break + } else if !single && parser.buffer[parser.buffer_pos] == '"' { + // It is a right double quote. + break + + } else if !single && parser.buffer[parser.buffer_pos] == '\\' && is_break(parser.buffer, parser.buffer_pos+1) { + // It is an escaped line break. + if parser.unread < 3 && !yaml_parser_update_buffer(parser, 3) { + return false + } + skip(parser) + skip_line(parser) + leading_blanks = true + break + + } else if !single && parser.buffer[parser.buffer_pos] == '\\' { + // It is an escape sequence. + code_length := 0 + + // Check the escape character. + switch parser.buffer[parser.buffer_pos+1] { + case '0': + s = append(s, 0) + case 'a': + s = append(s, '\x07') + case 'b': + s = append(s, '\x08') + case 't', '\t': + s = append(s, '\x09') + case 'n': + s = append(s, '\x0A') + case 'v': + s = append(s, '\x0B') + case 'f': + s = append(s, '\x0C') + case 'r': + s = append(s, '\x0D') + case 'e': + s = append(s, '\x1B') + case ' ': + s = append(s, '\x20') + case '"': + s = append(s, '"') + case '\'': + s = append(s, '\'') + case '\\': + s = append(s, '\\') + case 'N': // NEL (#x85) + s = append(s, '\xC2') + s = append(s, '\x85') + case '_': // #xA0 + s = append(s, '\xC2') + s = append(s, '\xA0') + case 'L': // LS (#x2028) + s = append(s, '\xE2') + s = append(s, '\x80') + s = append(s, '\xA8') + case 'P': // PS (#x2029) + s = append(s, '\xE2') + s = append(s, '\x80') + s = append(s, '\xA9') + case 'x': + code_length = 2 + case 'u': + code_length = 4 + case 'U': + code_length = 8 + default: + yaml_parser_set_scanner_error(parser, "while parsing a quoted scalar", + start_mark, "found unknown escape character") + return false + } + + skip(parser) + skip(parser) + + // Consume an arbitrary escape code. + if code_length > 0 { + var value int + + // Scan the character value. + if parser.unread < code_length && !yaml_parser_update_buffer(parser, code_length) { + return false + } + for k := 0; k < code_length; k++ { + if !is_hex(parser.buffer, parser.buffer_pos+k) { + yaml_parser_set_scanner_error(parser, "while parsing a quoted scalar", + start_mark, "did not find expected hexdecimal number") + return false + } + value = (value << 4) + as_hex(parser.buffer, parser.buffer_pos+k) + } + + // Check the value and write the character. + if (value >= 0xD800 && value <= 0xDFFF) || value > 0x10FFFF { + yaml_parser_set_scanner_error(parser, "while parsing a quoted scalar", + start_mark, "found invalid Unicode character escape code") + return false + } + if value <= 0x7F { + s = append(s, byte(value)) + } else if value <= 0x7FF { + s = append(s, byte(0xC0+(value>>6))) + s = append(s, byte(0x80+(value&0x3F))) + } else if value <= 0xFFFF { + s = append(s, byte(0xE0+(value>>12))) + s = append(s, byte(0x80+((value>>6)&0x3F))) + s = append(s, byte(0x80+(value&0x3F))) + } else { + s = append(s, byte(0xF0+(value>>18))) + s = append(s, byte(0x80+((value>>12)&0x3F))) + s = append(s, byte(0x80+((value>>6)&0x3F))) + s = append(s, byte(0x80+(value&0x3F))) + } + + // Advance the pointer. + for k := 0; k < code_length; k++ { + skip(parser) + } + } + } else { + // It is a non-escaped non-blank character. + s = read(parser, s) + } + if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) { + return false + } + } + + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + + // Check if we are at the end of the scalar. + if single { + if parser.buffer[parser.buffer_pos] == '\'' { + break + } + } else { + if parser.buffer[parser.buffer_pos] == '"' { + break + } + } + + // Consume blank characters. + for is_blank(parser.buffer, parser.buffer_pos) || is_break(parser.buffer, parser.buffer_pos) { + if is_blank(parser.buffer, parser.buffer_pos) { + // Consume a space or a tab character. + if !leading_blanks { + whitespaces = read(parser, whitespaces) + } else { + skip(parser) + } + } else { + if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) { + return false + } + + // Check if it is a first line break. + if !leading_blanks { + whitespaces = whitespaces[:0] + leading_break = read_line(parser, leading_break) + leading_blanks = true + } else { + trailing_breaks = read_line(parser, trailing_breaks) + } + } + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + } + + // Join the whitespaces or fold line breaks. + if leading_blanks { + // Do we need to fold line breaks? + if len(leading_break) > 0 && leading_break[0] == '\n' { + if len(trailing_breaks) == 0 { + s = append(s, ' ') + } else { + s = append(s, trailing_breaks...) + } + } else { + s = append(s, leading_break...) + s = append(s, trailing_breaks...) + } + trailing_breaks = trailing_breaks[:0] + leading_break = leading_break[:0] + } else { + s = append(s, whitespaces...) + whitespaces = whitespaces[:0] + } + } + + // Eat the right quote. + skip(parser) + end_mark := parser.mark + + // Create a token. + *token = yaml_token_t{ + typ: yaml_SCALAR_TOKEN, + start_mark: start_mark, + end_mark: end_mark, + value: s, + style: yaml_SINGLE_QUOTED_SCALAR_STYLE, + } + if !single { + token.style = yaml_DOUBLE_QUOTED_SCALAR_STYLE + } + return true +} + +// Scan a plain scalar. +func yaml_parser_scan_plain_scalar(parser *yaml_parser_t, token *yaml_token_t) bool { + + var s, leading_break, trailing_breaks, whitespaces []byte + var leading_blanks bool + var indent = parser.indent + 1 + + start_mark := parser.mark + end_mark := parser.mark + + // Consume the content of the plain scalar. + for { + // Check for a document indicator. + if parser.unread < 4 && !yaml_parser_update_buffer(parser, 4) { + return false + } + if parser.mark.column == 0 && + ((parser.buffer[parser.buffer_pos+0] == '-' && + parser.buffer[parser.buffer_pos+1] == '-' && + parser.buffer[parser.buffer_pos+2] == '-') || + (parser.buffer[parser.buffer_pos+0] == '.' && + parser.buffer[parser.buffer_pos+1] == '.' && + parser.buffer[parser.buffer_pos+2] == '.')) && + is_blankz(parser.buffer, parser.buffer_pos+3) { + break + } + + // Check for a comment. + if parser.buffer[parser.buffer_pos] == '#' { + break + } + + // Consume non-blank characters. + for !is_blankz(parser.buffer, parser.buffer_pos) { + + // Check for indicators that may end a plain scalar. + if (parser.buffer[parser.buffer_pos] == ':' && is_blankz(parser.buffer, parser.buffer_pos+1)) || + (parser.flow_level > 0 && + (parser.buffer[parser.buffer_pos] == ',' || + parser.buffer[parser.buffer_pos] == '?' || parser.buffer[parser.buffer_pos] == '[' || + parser.buffer[parser.buffer_pos] == ']' || parser.buffer[parser.buffer_pos] == '{' || + parser.buffer[parser.buffer_pos] == '}')) { + break + } + + // Check if we need to join whitespaces and breaks. + if leading_blanks || len(whitespaces) > 0 { + if leading_blanks { + // Do we need to fold line breaks? + if leading_break[0] == '\n' { + if len(trailing_breaks) == 0 { + s = append(s, ' ') + } else { + s = append(s, trailing_breaks...) + } + } else { + s = append(s, leading_break...) + s = append(s, trailing_breaks...) + } + trailing_breaks = trailing_breaks[:0] + leading_break = leading_break[:0] + leading_blanks = false + } else { + s = append(s, whitespaces...) + whitespaces = whitespaces[:0] + } + } + + // Copy the character. + s = read(parser, s) + + end_mark = parser.mark + if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) { + return false + } + } + + // Is it the end? + if !(is_blank(parser.buffer, parser.buffer_pos) || is_break(parser.buffer, parser.buffer_pos)) { + break + } + + // Consume blank characters. + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + + for is_blank(parser.buffer, parser.buffer_pos) || is_break(parser.buffer, parser.buffer_pos) { + if is_blank(parser.buffer, parser.buffer_pos) { + + // Check for tab characters that abuse indentation. + if leading_blanks && parser.mark.column < indent && is_tab(parser.buffer, parser.buffer_pos) { + yaml_parser_set_scanner_error(parser, "while scanning a plain scalar", + start_mark, "found a tab character that violates indentation") + return false + } + + // Consume a space or a tab character. + if !leading_blanks { + whitespaces = read(parser, whitespaces) + } else { + skip(parser) + } + } else { + if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) { + return false + } + + // Check if it is a first line break. + if !leading_blanks { + whitespaces = whitespaces[:0] + leading_break = read_line(parser, leading_break) + leading_blanks = true + } else { + trailing_breaks = read_line(parser, trailing_breaks) + } + } + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + } + + // Check indentation level. + if parser.flow_level == 0 && parser.mark.column < indent { + break + } + } + + // Create a token. + *token = yaml_token_t{ + typ: yaml_SCALAR_TOKEN, + start_mark: start_mark, + end_mark: end_mark, + value: s, + style: yaml_PLAIN_SCALAR_STYLE, + } + + // Note that we change the 'simple_key_allowed' flag. + if leading_blanks { + parser.simple_key_allowed = true + } + return true +} + +func yaml_parser_scan_line_comment(parser *yaml_parser_t, token_mark yaml_mark_t) bool { + if parser.newlines > 0 { + return true + } + + var start_mark yaml_mark_t + var text []byte + + for peek := 0; peek < 512; peek++ { + if parser.unread < peek+1 && !yaml_parser_update_buffer(parser, peek+1) { + break + } + if is_blank(parser.buffer, parser.buffer_pos+peek) { + continue + } + if parser.buffer[parser.buffer_pos+peek] == '#' { + seen := parser.mark.index+peek + for { + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + if is_breakz(parser.buffer, parser.buffer_pos) { + if parser.mark.index >= seen { + break + } + if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) { + return false + } + skip_line(parser) + } else if parser.mark.index >= seen { + if len(text) == 0 { + start_mark = parser.mark + } + text = read(parser, text) + } else { + skip(parser) + } + } + } + break + } + if len(text) > 0 { + parser.comments = append(parser.comments, yaml_comment_t{ + token_mark: token_mark, + start_mark: start_mark, + line: text, + }) + } + return true +} + +func yaml_parser_scan_comments(parser *yaml_parser_t, scan_mark yaml_mark_t) bool { + token := parser.tokens[len(parser.tokens)-1] + + if token.typ == yaml_FLOW_ENTRY_TOKEN && len(parser.tokens) > 1 { + token = parser.tokens[len(parser.tokens)-2] + } + + var token_mark = token.start_mark + var start_mark yaml_mark_t + var next_indent = parser.indent + if next_indent < 0 { + next_indent = 0 + } + + var recent_empty = false + var first_empty = parser.newlines <= 1 + + var line = parser.mark.line + var column = parser.mark.column + + var text []byte + + // The foot line is the place where a comment must start to + // still be considered as a foot of the prior content. + // If there's some content in the currently parsed line, then + // the foot is the line below it. + var foot_line = -1 + if scan_mark.line > 0 { + foot_line = parser.mark.line-parser.newlines+1 + if parser.newlines == 0 && parser.mark.column > 1 { + foot_line++ + } + } + + var peek = 0 + for ; peek < 512; peek++ { + if parser.unread < peek+1 && !yaml_parser_update_buffer(parser, peek+1) { + break + } + column++ + if is_blank(parser.buffer, parser.buffer_pos+peek) { + continue + } + c := parser.buffer[parser.buffer_pos+peek] + var close_flow = parser.flow_level > 0 && (c == ']' || c == '}') + if close_flow || is_breakz(parser.buffer, parser.buffer_pos+peek) { + // Got line break or terminator. + if close_flow || !recent_empty { + if close_flow || first_empty && (start_mark.line == foot_line && token.typ != yaml_VALUE_TOKEN || start_mark.column-1 < next_indent) { + // This is the first empty line and there were no empty lines before, + // so this initial part of the comment is a foot of the prior token + // instead of being a head for the following one. Split it up. + // Alternatively, this might also be the last comment inside a flow + // scope, so it must be a footer. + if len(text) > 0 { + if start_mark.column-1 < next_indent { + // If dedented it's unrelated to the prior token. + token_mark = start_mark + } + parser.comments = append(parser.comments, yaml_comment_t{ + scan_mark: scan_mark, + token_mark: token_mark, + start_mark: start_mark, + end_mark: yaml_mark_t{parser.mark.index + peek, line, column}, + foot: text, + }) + scan_mark = yaml_mark_t{parser.mark.index + peek, line, column} + token_mark = scan_mark + text = nil + } + } else { + if len(text) > 0 && parser.buffer[parser.buffer_pos+peek] != 0 { + text = append(text, '\n') + } + } + } + if !is_break(parser.buffer, parser.buffer_pos+peek) { + break + } + first_empty = false + recent_empty = true + column = 0 + line++ + continue + } + + if len(text) > 0 && (close_flow || column-1 < next_indent && column != start_mark.column) { + // The comment at the different indentation is a foot of the + // preceding data rather than a head of the upcoming one. + parser.comments = append(parser.comments, yaml_comment_t{ + scan_mark: scan_mark, + token_mark: token_mark, + start_mark: start_mark, + end_mark: yaml_mark_t{parser.mark.index + peek, line, column}, + foot: text, + }) + scan_mark = yaml_mark_t{parser.mark.index + peek, line, column} + token_mark = scan_mark + text = nil + } + + if parser.buffer[parser.buffer_pos+peek] != '#' { + break + } + + if len(text) == 0 { + start_mark = yaml_mark_t{parser.mark.index + peek, line, column} + } else { + text = append(text, '\n') + } + + recent_empty = false + + // Consume until after the consumed comment line. + seen := parser.mark.index+peek + for { + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + if is_breakz(parser.buffer, parser.buffer_pos) { + if parser.mark.index >= seen { + break + } + if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) { + return false + } + skip_line(parser) + } else if parser.mark.index >= seen { + text = read(parser, text) + } else { + skip(parser) + } + } + + peek = 0 + column = 0 + line = parser.mark.line + next_indent = parser.indent + if next_indent < 0 { + next_indent = 0 + } + } + + if len(text) > 0 { + parser.comments = append(parser.comments, yaml_comment_t{ + scan_mark: scan_mark, + token_mark: start_mark, + start_mark: start_mark, + end_mark: yaml_mark_t{parser.mark.index + peek - 1, line, column}, + head: text, + }) + } + return true +} diff --git a/vendor/gopkg.in/yaml.v3/sorter.go b/vendor/gopkg.in/yaml.v3/sorter.go new file mode 100644 index 000000000..9210ece7e --- /dev/null +++ b/vendor/gopkg.in/yaml.v3/sorter.go @@ -0,0 +1,134 @@ +// +// Copyright (c) 2011-2019 Canonical Ltd +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package yaml + +import ( + "reflect" + "unicode" +) + +type keyList []reflect.Value + +func (l keyList) Len() int { return len(l) } +func (l keyList) Swap(i, j int) { l[i], l[j] = l[j], l[i] } +func (l keyList) Less(i, j int) bool { + a := l[i] + b := l[j] + ak := a.Kind() + bk := b.Kind() + for (ak == reflect.Interface || ak == reflect.Ptr) && !a.IsNil() { + a = a.Elem() + ak = a.Kind() + } + for (bk == reflect.Interface || bk == reflect.Ptr) && !b.IsNil() { + b = b.Elem() + bk = b.Kind() + } + af, aok := keyFloat(a) + bf, bok := keyFloat(b) + if aok && bok { + if af != bf { + return af < bf + } + if ak != bk { + return ak < bk + } + return numLess(a, b) + } + if ak != reflect.String || bk != reflect.String { + return ak < bk + } + ar, br := []rune(a.String()), []rune(b.String()) + digits := false + for i := 0; i < len(ar) && i < len(br); i++ { + if ar[i] == br[i] { + digits = unicode.IsDigit(ar[i]) + continue + } + al := unicode.IsLetter(ar[i]) + bl := unicode.IsLetter(br[i]) + if al && bl { + return ar[i] < br[i] + } + if al || bl { + if digits { + return al + } else { + return bl + } + } + var ai, bi int + var an, bn int64 + if ar[i] == '0' || br[i] == '0' { + for j := i - 1; j >= 0 && unicode.IsDigit(ar[j]); j-- { + if ar[j] != '0' { + an = 1 + bn = 1 + break + } + } + } + for ai = i; ai < len(ar) && unicode.IsDigit(ar[ai]); ai++ { + an = an*10 + int64(ar[ai]-'0') + } + for bi = i; bi < len(br) && unicode.IsDigit(br[bi]); bi++ { + bn = bn*10 + int64(br[bi]-'0') + } + if an != bn { + return an < bn + } + if ai != bi { + return ai < bi + } + return ar[i] < br[i] + } + return len(ar) < len(br) +} + +// keyFloat returns a float value for v if it is a number/bool +// and whether it is a number/bool or not. +func keyFloat(v reflect.Value) (f float64, ok bool) { + switch v.Kind() { + case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64: + return float64(v.Int()), true + case reflect.Float32, reflect.Float64: + return v.Float(), true + case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr: + return float64(v.Uint()), true + case reflect.Bool: + if v.Bool() { + return 1, true + } + return 0, true + } + return 0, false +} + +// numLess returns whether a < b. +// a and b must necessarily have the same kind. +func numLess(a, b reflect.Value) bool { + switch a.Kind() { + case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64: + return a.Int() < b.Int() + case reflect.Float32, reflect.Float64: + return a.Float() < b.Float() + case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr: + return a.Uint() < b.Uint() + case reflect.Bool: + return !a.Bool() && b.Bool() + } + panic("not a number") +} diff --git a/vendor/gopkg.in/yaml.v3/writerc.go b/vendor/gopkg.in/yaml.v3/writerc.go new file mode 100644 index 000000000..b8a116bf9 --- /dev/null +++ b/vendor/gopkg.in/yaml.v3/writerc.go @@ -0,0 +1,48 @@ +// +// Copyright (c) 2011-2019 Canonical Ltd +// Copyright (c) 2006-2010 Kirill Simonov +// +// Permission is hereby granted, free of charge, to any person obtaining a copy of +// this software and associated documentation files (the "Software"), to deal in +// the Software without restriction, including without limitation the rights to +// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies +// of the Software, and to permit persons to whom the Software is furnished to do +// so, subject to the following conditions: +// +// The above copyright notice and this permission notice shall be included in all +// copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +// SOFTWARE. + +package yaml + +// Set the writer error and return false. +func yaml_emitter_set_writer_error(emitter *yaml_emitter_t, problem string) bool { + emitter.error = yaml_WRITER_ERROR + emitter.problem = problem + return false +} + +// Flush the output buffer. +func yaml_emitter_flush(emitter *yaml_emitter_t) bool { + if emitter.write_handler == nil { + panic("write handler not set") + } + + // Check if the buffer is empty. + if emitter.buffer_pos == 0 { + return true + } + + if err := emitter.write_handler(emitter, emitter.buffer[:emitter.buffer_pos]); err != nil { + return yaml_emitter_set_writer_error(emitter, "write error: "+err.Error()) + } + emitter.buffer_pos = 0 + return true +} diff --git a/vendor/gopkg.in/yaml.v3/yaml.go b/vendor/gopkg.in/yaml.v3/yaml.go new file mode 100644 index 000000000..8cec6da48 --- /dev/null +++ b/vendor/gopkg.in/yaml.v3/yaml.go @@ -0,0 +1,698 @@ +// +// Copyright (c) 2011-2019 Canonical Ltd +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Package yaml implements YAML support for the Go language. +// +// Source code and other details for the project are available at GitHub: +// +// https://github.com/go-yaml/yaml +// +package yaml + +import ( + "errors" + "fmt" + "io" + "reflect" + "strings" + "sync" + "unicode/utf8" +) + +// The Unmarshaler interface may be implemented by types to customize their +// behavior when being unmarshaled from a YAML document. +type Unmarshaler interface { + UnmarshalYAML(value *Node) error +} + +type obsoleteUnmarshaler interface { + UnmarshalYAML(unmarshal func(interface{}) error) error +} + +// The Marshaler interface may be implemented by types to customize their +// behavior when being marshaled into a YAML document. The returned value +// is marshaled in place of the original value implementing Marshaler. +// +// If an error is returned by MarshalYAML, the marshaling procedure stops +// and returns with the provided error. +type Marshaler interface { + MarshalYAML() (interface{}, error) +} + +// Unmarshal decodes the first document found within the in byte slice +// and assigns decoded values into the out value. +// +// Maps and pointers (to a struct, string, int, etc) are accepted as out +// values. If an internal pointer within a struct is not initialized, +// the yaml package will initialize it if necessary for unmarshalling +// the provided data. The out parameter must not be nil. +// +// The type of the decoded values should be compatible with the respective +// values in out. If one or more values cannot be decoded due to a type +// mismatches, decoding continues partially until the end of the YAML +// content, and a *yaml.TypeError is returned with details for all +// missed values. +// +// Struct fields are only unmarshalled if they are exported (have an +// upper case first letter), and are unmarshalled using the field name +// lowercased as the default key. Custom keys may be defined via the +// "yaml" name in the field tag: the content preceding the first comma +// is used as the key, and the following comma-separated options are +// used to tweak the marshalling process (see Marshal). +// Conflicting names result in a runtime error. +// +// For example: +// +// type T struct { +// F int `yaml:"a,omitempty"` +// B int +// } +// var t T +// yaml.Unmarshal([]byte("a: 1\nb: 2"), &t) +// +// See the documentation of Marshal for the format of tags and a list of +// supported tag options. +// +func Unmarshal(in []byte, out interface{}) (err error) { + return unmarshal(in, out, false) +} + +// A Decoder reads and decodes YAML values from an input stream. +type Decoder struct { + parser *parser + knownFields bool +} + +// NewDecoder returns a new decoder that reads from r. +// +// The decoder introduces its own buffering and may read +// data from r beyond the YAML values requested. +func NewDecoder(r io.Reader) *Decoder { + return &Decoder{ + parser: newParserFromReader(r), + } +} + +// KnownFields ensures that the keys in decoded mappings to +// exist as fields in the struct being decoded into. +func (dec *Decoder) KnownFields(enable bool) { + dec.knownFields = enable +} + +// Decode reads the next YAML-encoded value from its input +// and stores it in the value pointed to by v. +// +// See the documentation for Unmarshal for details about the +// conversion of YAML into a Go value. +func (dec *Decoder) Decode(v interface{}) (err error) { + d := newDecoder() + d.knownFields = dec.knownFields + defer handleErr(&err) + node := dec.parser.parse() + if node == nil { + return io.EOF + } + out := reflect.ValueOf(v) + if out.Kind() == reflect.Ptr && !out.IsNil() { + out = out.Elem() + } + d.unmarshal(node, out) + if len(d.terrors) > 0 { + return &TypeError{d.terrors} + } + return nil +} + +// Decode decodes the node and stores its data into the value pointed to by v. +// +// See the documentation for Unmarshal for details about the +// conversion of YAML into a Go value. +func (n *Node) Decode(v interface{}) (err error) { + d := newDecoder() + defer handleErr(&err) + out := reflect.ValueOf(v) + if out.Kind() == reflect.Ptr && !out.IsNil() { + out = out.Elem() + } + d.unmarshal(n, out) + if len(d.terrors) > 0 { + return &TypeError{d.terrors} + } + return nil +} + +func unmarshal(in []byte, out interface{}, strict bool) (err error) { + defer handleErr(&err) + d := newDecoder() + p := newParser(in) + defer p.destroy() + node := p.parse() + if node != nil { + v := reflect.ValueOf(out) + if v.Kind() == reflect.Ptr && !v.IsNil() { + v = v.Elem() + } + d.unmarshal(node, v) + } + if len(d.terrors) > 0 { + return &TypeError{d.terrors} + } + return nil +} + +// Marshal serializes the value provided into a YAML document. The structure +// of the generated document will reflect the structure of the value itself. +// Maps and pointers (to struct, string, int, etc) are accepted as the in value. +// +// Struct fields are only marshalled if they are exported (have an upper case +// first letter), and are marshalled using the field name lowercased as the +// default key. Custom keys may be defined via the "yaml" name in the field +// tag: the content preceding the first comma is used as the key, and the +// following comma-separated options are used to tweak the marshalling process. +// Conflicting names result in a runtime error. +// +// The field tag format accepted is: +// +// `(...) yaml:"[][,[,]]" (...)` +// +// The following flags are currently supported: +// +// omitempty Only include the field if it's not set to the zero +// value for the type or to empty slices or maps. +// Zero valued structs will be omitted if all their public +// fields are zero, unless they implement an IsZero +// method (see the IsZeroer interface type), in which +// case the field will be excluded if IsZero returns true. +// +// flow Marshal using a flow style (useful for structs, +// sequences and maps). +// +// inline Inline the field, which must be a struct or a map, +// causing all of its fields or keys to be processed as if +// they were part of the outer struct. For maps, keys must +// not conflict with the yaml keys of other struct fields. +// +// In addition, if the key is "-", the field is ignored. +// +// For example: +// +// type T struct { +// F int `yaml:"a,omitempty"` +// B int +// } +// yaml.Marshal(&T{B: 2}) // Returns "b: 2\n" +// yaml.Marshal(&T{F: 1}} // Returns "a: 1\nb: 0\n" +// +func Marshal(in interface{}) (out []byte, err error) { + defer handleErr(&err) + e := newEncoder() + defer e.destroy() + e.marshalDoc("", reflect.ValueOf(in)) + e.finish() + out = e.out + return +} + +// An Encoder writes YAML values to an output stream. +type Encoder struct { + encoder *encoder +} + +// NewEncoder returns a new encoder that writes to w. +// The Encoder should be closed after use to flush all data +// to w. +func NewEncoder(w io.Writer) *Encoder { + return &Encoder{ + encoder: newEncoderWithWriter(w), + } +} + +// Encode writes the YAML encoding of v to the stream. +// If multiple items are encoded to the stream, the +// second and subsequent document will be preceded +// with a "---" document separator, but the first will not. +// +// See the documentation for Marshal for details about the conversion of Go +// values to YAML. +func (e *Encoder) Encode(v interface{}) (err error) { + defer handleErr(&err) + e.encoder.marshalDoc("", reflect.ValueOf(v)) + return nil +} + +// Encode encodes value v and stores its representation in n. +// +// See the documentation for Marshal for details about the +// conversion of Go values into YAML. +func (n *Node) Encode(v interface{}) (err error) { + defer handleErr(&err) + e := newEncoder() + defer e.destroy() + e.marshalDoc("", reflect.ValueOf(v)) + e.finish() + p := newParser(e.out) + p.textless = true + defer p.destroy() + doc := p.parse() + *n = *doc.Content[0] + return nil +} + +// SetIndent changes the used indentation used when encoding. +func (e *Encoder) SetIndent(spaces int) { + if spaces < 0 { + panic("yaml: cannot indent to a negative number of spaces") + } + e.encoder.indent = spaces +} + +// Close closes the encoder by writing any remaining data. +// It does not write a stream terminating string "...". +func (e *Encoder) Close() (err error) { + defer handleErr(&err) + e.encoder.finish() + return nil +} + +func handleErr(err *error) { + if v := recover(); v != nil { + if e, ok := v.(yamlError); ok { + *err = e.err + } else { + panic(v) + } + } +} + +type yamlError struct { + err error +} + +func fail(err error) { + panic(yamlError{err}) +} + +func failf(format string, args ...interface{}) { + panic(yamlError{fmt.Errorf("yaml: "+format, args...)}) +} + +// A TypeError is returned by Unmarshal when one or more fields in +// the YAML document cannot be properly decoded into the requested +// types. When this error is returned, the value is still +// unmarshaled partially. +type TypeError struct { + Errors []string +} + +func (e *TypeError) Error() string { + return fmt.Sprintf("yaml: unmarshal errors:\n %s", strings.Join(e.Errors, "\n ")) +} + +type Kind uint32 + +const ( + DocumentNode Kind = 1 << iota + SequenceNode + MappingNode + ScalarNode + AliasNode +) + +type Style uint32 + +const ( + TaggedStyle Style = 1 << iota + DoubleQuotedStyle + SingleQuotedStyle + LiteralStyle + FoldedStyle + FlowStyle +) + +// Node represents an element in the YAML document hierarchy. While documents +// are typically encoded and decoded into higher level types, such as structs +// and maps, Node is an intermediate representation that allows detailed +// control over the content being decoded or encoded. +// +// It's worth noting that although Node offers access into details such as +// line numbers, colums, and comments, the content when re-encoded will not +// have its original textual representation preserved. An effort is made to +// render the data plesantly, and to preserve comments near the data they +// describe, though. +// +// Values that make use of the Node type interact with the yaml package in the +// same way any other type would do, by encoding and decoding yaml data +// directly or indirectly into them. +// +// For example: +// +// var person struct { +// Name string +// Address yaml.Node +// } +// err := yaml.Unmarshal(data, &person) +// +// Or by itself: +// +// var person Node +// err := yaml.Unmarshal(data, &person) +// +type Node struct { + // Kind defines whether the node is a document, a mapping, a sequence, + // a scalar value, or an alias to another node. The specific data type of + // scalar nodes may be obtained via the ShortTag and LongTag methods. + Kind Kind + + // Style allows customizing the apperance of the node in the tree. + Style Style + + // Tag holds the YAML tag defining the data type for the value. + // When decoding, this field will always be set to the resolved tag, + // even when it wasn't explicitly provided in the YAML content. + // When encoding, if this field is unset the value type will be + // implied from the node properties, and if it is set, it will only + // be serialized into the representation if TaggedStyle is used or + // the implicit tag diverges from the provided one. + Tag string + + // Value holds the unescaped and unquoted represenation of the value. + Value string + + // Anchor holds the anchor name for this node, which allows aliases to point to it. + Anchor string + + // Alias holds the node that this alias points to. Only valid when Kind is AliasNode. + Alias *Node + + // Content holds contained nodes for documents, mappings, and sequences. + Content []*Node + + // HeadComment holds any comments in the lines preceding the node and + // not separated by an empty line. + HeadComment string + + // LineComment holds any comments at the end of the line where the node is in. + LineComment string + + // FootComment holds any comments following the node and before empty lines. + FootComment string + + // Line and Column hold the node position in the decoded YAML text. + // These fields are not respected when encoding the node. + Line int + Column int +} + +// IsZero returns whether the node has all of its fields unset. +func (n *Node) IsZero() bool { + return n.Kind == 0 && n.Style == 0 && n.Tag == "" && n.Value == "" && n.Anchor == "" && n.Alias == nil && n.Content == nil && + n.HeadComment == "" && n.LineComment == "" && n.FootComment == "" && n.Line == 0 && n.Column == 0 +} + + +// LongTag returns the long form of the tag that indicates the data type for +// the node. If the Tag field isn't explicitly defined, one will be computed +// based on the node properties. +func (n *Node) LongTag() string { + return longTag(n.ShortTag()) +} + +// ShortTag returns the short form of the YAML tag that indicates data type for +// the node. If the Tag field isn't explicitly defined, one will be computed +// based on the node properties. +func (n *Node) ShortTag() string { + if n.indicatedString() { + return strTag + } + if n.Tag == "" || n.Tag == "!" { + switch n.Kind { + case MappingNode: + return mapTag + case SequenceNode: + return seqTag + case AliasNode: + if n.Alias != nil { + return n.Alias.ShortTag() + } + case ScalarNode: + tag, _ := resolve("", n.Value) + return tag + case 0: + // Special case to make the zero value convenient. + if n.IsZero() { + return nullTag + } + } + return "" + } + return shortTag(n.Tag) +} + +func (n *Node) indicatedString() bool { + return n.Kind == ScalarNode && + (shortTag(n.Tag) == strTag || + (n.Tag == "" || n.Tag == "!") && n.Style&(SingleQuotedStyle|DoubleQuotedStyle|LiteralStyle|FoldedStyle) != 0) +} + +// SetString is a convenience function that sets the node to a string value +// and defines its style in a pleasant way depending on its content. +func (n *Node) SetString(s string) { + n.Kind = ScalarNode + if utf8.ValidString(s) { + n.Value = s + n.Tag = strTag + } else { + n.Value = encodeBase64(s) + n.Tag = binaryTag + } + if strings.Contains(n.Value, "\n") { + n.Style = LiteralStyle + } +} + +// -------------------------------------------------------------------------- +// Maintain a mapping of keys to structure field indexes + +// The code in this section was copied from mgo/bson. + +// structInfo holds details for the serialization of fields of +// a given struct. +type structInfo struct { + FieldsMap map[string]fieldInfo + FieldsList []fieldInfo + + // InlineMap is the number of the field in the struct that + // contains an ,inline map, or -1 if there's none. + InlineMap int + + // InlineUnmarshalers holds indexes to inlined fields that + // contain unmarshaler values. + InlineUnmarshalers [][]int +} + +type fieldInfo struct { + Key string + Num int + OmitEmpty bool + Flow bool + // Id holds the unique field identifier, so we can cheaply + // check for field duplicates without maintaining an extra map. + Id int + + // Inline holds the field index if the field is part of an inlined struct. + Inline []int +} + +var structMap = make(map[reflect.Type]*structInfo) +var fieldMapMutex sync.RWMutex +var unmarshalerType reflect.Type + +func init() { + var v Unmarshaler + unmarshalerType = reflect.ValueOf(&v).Elem().Type() +} + +func getStructInfo(st reflect.Type) (*structInfo, error) { + fieldMapMutex.RLock() + sinfo, found := structMap[st] + fieldMapMutex.RUnlock() + if found { + return sinfo, nil + } + + n := st.NumField() + fieldsMap := make(map[string]fieldInfo) + fieldsList := make([]fieldInfo, 0, n) + inlineMap := -1 + inlineUnmarshalers := [][]int(nil) + for i := 0; i != n; i++ { + field := st.Field(i) + if field.PkgPath != "" && !field.Anonymous { + continue // Private field + } + + info := fieldInfo{Num: i} + + tag := field.Tag.Get("yaml") + if tag == "" && strings.Index(string(field.Tag), ":") < 0 { + tag = string(field.Tag) + } + if tag == "-" { + continue + } + + inline := false + fields := strings.Split(tag, ",") + if len(fields) > 1 { + for _, flag := range fields[1:] { + switch flag { + case "omitempty": + info.OmitEmpty = true + case "flow": + info.Flow = true + case "inline": + inline = true + default: + return nil, errors.New(fmt.Sprintf("unsupported flag %q in tag %q of type %s", flag, tag, st)) + } + } + tag = fields[0] + } + + if inline { + switch field.Type.Kind() { + case reflect.Map: + if inlineMap >= 0 { + return nil, errors.New("multiple ,inline maps in struct " + st.String()) + } + if field.Type.Key() != reflect.TypeOf("") { + return nil, errors.New("option ,inline needs a map with string keys in struct " + st.String()) + } + inlineMap = info.Num + case reflect.Struct, reflect.Ptr: + ftype := field.Type + for ftype.Kind() == reflect.Ptr { + ftype = ftype.Elem() + } + if ftype.Kind() != reflect.Struct { + return nil, errors.New("option ,inline may only be used on a struct or map field") + } + if reflect.PtrTo(ftype).Implements(unmarshalerType) { + inlineUnmarshalers = append(inlineUnmarshalers, []int{i}) + } else { + sinfo, err := getStructInfo(ftype) + if err != nil { + return nil, err + } + for _, index := range sinfo.InlineUnmarshalers { + inlineUnmarshalers = append(inlineUnmarshalers, append([]int{i}, index...)) + } + for _, finfo := range sinfo.FieldsList { + if _, found := fieldsMap[finfo.Key]; found { + msg := "duplicated key '" + finfo.Key + "' in struct " + st.String() + return nil, errors.New(msg) + } + if finfo.Inline == nil { + finfo.Inline = []int{i, finfo.Num} + } else { + finfo.Inline = append([]int{i}, finfo.Inline...) + } + finfo.Id = len(fieldsList) + fieldsMap[finfo.Key] = finfo + fieldsList = append(fieldsList, finfo) + } + } + default: + return nil, errors.New("option ,inline may only be used on a struct or map field") + } + continue + } + + if tag != "" { + info.Key = tag + } else { + info.Key = strings.ToLower(field.Name) + } + + if _, found = fieldsMap[info.Key]; found { + msg := "duplicated key '" + info.Key + "' in struct " + st.String() + return nil, errors.New(msg) + } + + info.Id = len(fieldsList) + fieldsList = append(fieldsList, info) + fieldsMap[info.Key] = info + } + + sinfo = &structInfo{ + FieldsMap: fieldsMap, + FieldsList: fieldsList, + InlineMap: inlineMap, + InlineUnmarshalers: inlineUnmarshalers, + } + + fieldMapMutex.Lock() + structMap[st] = sinfo + fieldMapMutex.Unlock() + return sinfo, nil +} + +// IsZeroer is used to check whether an object is zero to +// determine whether it should be omitted when marshaling +// with the omitempty flag. One notable implementation +// is time.Time. +type IsZeroer interface { + IsZero() bool +} + +func isZero(v reflect.Value) bool { + kind := v.Kind() + if z, ok := v.Interface().(IsZeroer); ok { + if (kind == reflect.Ptr || kind == reflect.Interface) && v.IsNil() { + return true + } + return z.IsZero() + } + switch kind { + case reflect.String: + return len(v.String()) == 0 + case reflect.Interface, reflect.Ptr: + return v.IsNil() + case reflect.Slice: + return v.Len() == 0 + case reflect.Map: + return v.Len() == 0 + case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64: + return v.Int() == 0 + case reflect.Float32, reflect.Float64: + return v.Float() == 0 + case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr: + return v.Uint() == 0 + case reflect.Bool: + return !v.Bool() + case reflect.Struct: + vt := v.Type() + for i := v.NumField() - 1; i >= 0; i-- { + if vt.Field(i).PkgPath != "" { + continue // Private field + } + if !isZero(v.Field(i)) { + return false + } + } + return true + } + return false +} diff --git a/vendor/gopkg.in/yaml.v3/yamlh.go b/vendor/gopkg.in/yaml.v3/yamlh.go new file mode 100644 index 000000000..7c6d00770 --- /dev/null +++ b/vendor/gopkg.in/yaml.v3/yamlh.go @@ -0,0 +1,807 @@ +// +// Copyright (c) 2011-2019 Canonical Ltd +// Copyright (c) 2006-2010 Kirill Simonov +// +// Permission is hereby granted, free of charge, to any person obtaining a copy of +// this software and associated documentation files (the "Software"), to deal in +// the Software without restriction, including without limitation the rights to +// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies +// of the Software, and to permit persons to whom the Software is furnished to do +// so, subject to the following conditions: +// +// The above copyright notice and this permission notice shall be included in all +// copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +// SOFTWARE. + +package yaml + +import ( + "fmt" + "io" +) + +// The version directive data. +type yaml_version_directive_t struct { + major int8 // The major version number. + minor int8 // The minor version number. +} + +// The tag directive data. +type yaml_tag_directive_t struct { + handle []byte // The tag handle. + prefix []byte // The tag prefix. +} + +type yaml_encoding_t int + +// The stream encoding. +const ( + // Let the parser choose the encoding. + yaml_ANY_ENCODING yaml_encoding_t = iota + + yaml_UTF8_ENCODING // The default UTF-8 encoding. + yaml_UTF16LE_ENCODING // The UTF-16-LE encoding with BOM. + yaml_UTF16BE_ENCODING // The UTF-16-BE encoding with BOM. +) + +type yaml_break_t int + +// Line break types. +const ( + // Let the parser choose the break type. + yaml_ANY_BREAK yaml_break_t = iota + + yaml_CR_BREAK // Use CR for line breaks (Mac style). + yaml_LN_BREAK // Use LN for line breaks (Unix style). + yaml_CRLN_BREAK // Use CR LN for line breaks (DOS style). +) + +type yaml_error_type_t int + +// Many bad things could happen with the parser and emitter. +const ( + // No error is produced. + yaml_NO_ERROR yaml_error_type_t = iota + + yaml_MEMORY_ERROR // Cannot allocate or reallocate a block of memory. + yaml_READER_ERROR // Cannot read or decode the input stream. + yaml_SCANNER_ERROR // Cannot scan the input stream. + yaml_PARSER_ERROR // Cannot parse the input stream. + yaml_COMPOSER_ERROR // Cannot compose a YAML document. + yaml_WRITER_ERROR // Cannot write to the output stream. + yaml_EMITTER_ERROR // Cannot emit a YAML stream. +) + +// The pointer position. +type yaml_mark_t struct { + index int // The position index. + line int // The position line. + column int // The position column. +} + +// Node Styles + +type yaml_style_t int8 + +type yaml_scalar_style_t yaml_style_t + +// Scalar styles. +const ( + // Let the emitter choose the style. + yaml_ANY_SCALAR_STYLE yaml_scalar_style_t = 0 + + yaml_PLAIN_SCALAR_STYLE yaml_scalar_style_t = 1 << iota // The plain scalar style. + yaml_SINGLE_QUOTED_SCALAR_STYLE // The single-quoted scalar style. + yaml_DOUBLE_QUOTED_SCALAR_STYLE // The double-quoted scalar style. + yaml_LITERAL_SCALAR_STYLE // The literal scalar style. + yaml_FOLDED_SCALAR_STYLE // The folded scalar style. +) + +type yaml_sequence_style_t yaml_style_t + +// Sequence styles. +const ( + // Let the emitter choose the style. + yaml_ANY_SEQUENCE_STYLE yaml_sequence_style_t = iota + + yaml_BLOCK_SEQUENCE_STYLE // The block sequence style. + yaml_FLOW_SEQUENCE_STYLE // The flow sequence style. +) + +type yaml_mapping_style_t yaml_style_t + +// Mapping styles. +const ( + // Let the emitter choose the style. + yaml_ANY_MAPPING_STYLE yaml_mapping_style_t = iota + + yaml_BLOCK_MAPPING_STYLE // The block mapping style. + yaml_FLOW_MAPPING_STYLE // The flow mapping style. +) + +// Tokens + +type yaml_token_type_t int + +// Token types. +const ( + // An empty token. + yaml_NO_TOKEN yaml_token_type_t = iota + + yaml_STREAM_START_TOKEN // A STREAM-START token. + yaml_STREAM_END_TOKEN // A STREAM-END token. + + yaml_VERSION_DIRECTIVE_TOKEN // A VERSION-DIRECTIVE token. + yaml_TAG_DIRECTIVE_TOKEN // A TAG-DIRECTIVE token. + yaml_DOCUMENT_START_TOKEN // A DOCUMENT-START token. + yaml_DOCUMENT_END_TOKEN // A DOCUMENT-END token. + + yaml_BLOCK_SEQUENCE_START_TOKEN // A BLOCK-SEQUENCE-START token. + yaml_BLOCK_MAPPING_START_TOKEN // A BLOCK-SEQUENCE-END token. + yaml_BLOCK_END_TOKEN // A BLOCK-END token. + + yaml_FLOW_SEQUENCE_START_TOKEN // A FLOW-SEQUENCE-START token. + yaml_FLOW_SEQUENCE_END_TOKEN // A FLOW-SEQUENCE-END token. + yaml_FLOW_MAPPING_START_TOKEN // A FLOW-MAPPING-START token. + yaml_FLOW_MAPPING_END_TOKEN // A FLOW-MAPPING-END token. + + yaml_BLOCK_ENTRY_TOKEN // A BLOCK-ENTRY token. + yaml_FLOW_ENTRY_TOKEN // A FLOW-ENTRY token. + yaml_KEY_TOKEN // A KEY token. + yaml_VALUE_TOKEN // A VALUE token. + + yaml_ALIAS_TOKEN // An ALIAS token. + yaml_ANCHOR_TOKEN // An ANCHOR token. + yaml_TAG_TOKEN // A TAG token. + yaml_SCALAR_TOKEN // A SCALAR token. +) + +func (tt yaml_token_type_t) String() string { + switch tt { + case yaml_NO_TOKEN: + return "yaml_NO_TOKEN" + case yaml_STREAM_START_TOKEN: + return "yaml_STREAM_START_TOKEN" + case yaml_STREAM_END_TOKEN: + return "yaml_STREAM_END_TOKEN" + case yaml_VERSION_DIRECTIVE_TOKEN: + return "yaml_VERSION_DIRECTIVE_TOKEN" + case yaml_TAG_DIRECTIVE_TOKEN: + return "yaml_TAG_DIRECTIVE_TOKEN" + case yaml_DOCUMENT_START_TOKEN: + return "yaml_DOCUMENT_START_TOKEN" + case yaml_DOCUMENT_END_TOKEN: + return "yaml_DOCUMENT_END_TOKEN" + case yaml_BLOCK_SEQUENCE_START_TOKEN: + return "yaml_BLOCK_SEQUENCE_START_TOKEN" + case yaml_BLOCK_MAPPING_START_TOKEN: + return "yaml_BLOCK_MAPPING_START_TOKEN" + case yaml_BLOCK_END_TOKEN: + return "yaml_BLOCK_END_TOKEN" + case yaml_FLOW_SEQUENCE_START_TOKEN: + return "yaml_FLOW_SEQUENCE_START_TOKEN" + case yaml_FLOW_SEQUENCE_END_TOKEN: + return "yaml_FLOW_SEQUENCE_END_TOKEN" + case yaml_FLOW_MAPPING_START_TOKEN: + return "yaml_FLOW_MAPPING_START_TOKEN" + case yaml_FLOW_MAPPING_END_TOKEN: + return "yaml_FLOW_MAPPING_END_TOKEN" + case yaml_BLOCK_ENTRY_TOKEN: + return "yaml_BLOCK_ENTRY_TOKEN" + case yaml_FLOW_ENTRY_TOKEN: + return "yaml_FLOW_ENTRY_TOKEN" + case yaml_KEY_TOKEN: + return "yaml_KEY_TOKEN" + case yaml_VALUE_TOKEN: + return "yaml_VALUE_TOKEN" + case yaml_ALIAS_TOKEN: + return "yaml_ALIAS_TOKEN" + case yaml_ANCHOR_TOKEN: + return "yaml_ANCHOR_TOKEN" + case yaml_TAG_TOKEN: + return "yaml_TAG_TOKEN" + case yaml_SCALAR_TOKEN: + return "yaml_SCALAR_TOKEN" + } + return "" +} + +// The token structure. +type yaml_token_t struct { + // The token type. + typ yaml_token_type_t + + // The start/end of the token. + start_mark, end_mark yaml_mark_t + + // The stream encoding (for yaml_STREAM_START_TOKEN). + encoding yaml_encoding_t + + // The alias/anchor/scalar value or tag/tag directive handle + // (for yaml_ALIAS_TOKEN, yaml_ANCHOR_TOKEN, yaml_SCALAR_TOKEN, yaml_TAG_TOKEN, yaml_TAG_DIRECTIVE_TOKEN). + value []byte + + // The tag suffix (for yaml_TAG_TOKEN). + suffix []byte + + // The tag directive prefix (for yaml_TAG_DIRECTIVE_TOKEN). + prefix []byte + + // The scalar style (for yaml_SCALAR_TOKEN). + style yaml_scalar_style_t + + // The version directive major/minor (for yaml_VERSION_DIRECTIVE_TOKEN). + major, minor int8 +} + +// Events + +type yaml_event_type_t int8 + +// Event types. +const ( + // An empty event. + yaml_NO_EVENT yaml_event_type_t = iota + + yaml_STREAM_START_EVENT // A STREAM-START event. + yaml_STREAM_END_EVENT // A STREAM-END event. + yaml_DOCUMENT_START_EVENT // A DOCUMENT-START event. + yaml_DOCUMENT_END_EVENT // A DOCUMENT-END event. + yaml_ALIAS_EVENT // An ALIAS event. + yaml_SCALAR_EVENT // A SCALAR event. + yaml_SEQUENCE_START_EVENT // A SEQUENCE-START event. + yaml_SEQUENCE_END_EVENT // A SEQUENCE-END event. + yaml_MAPPING_START_EVENT // A MAPPING-START event. + yaml_MAPPING_END_EVENT // A MAPPING-END event. + yaml_TAIL_COMMENT_EVENT +) + +var eventStrings = []string{ + yaml_NO_EVENT: "none", + yaml_STREAM_START_EVENT: "stream start", + yaml_STREAM_END_EVENT: "stream end", + yaml_DOCUMENT_START_EVENT: "document start", + yaml_DOCUMENT_END_EVENT: "document end", + yaml_ALIAS_EVENT: "alias", + yaml_SCALAR_EVENT: "scalar", + yaml_SEQUENCE_START_EVENT: "sequence start", + yaml_SEQUENCE_END_EVENT: "sequence end", + yaml_MAPPING_START_EVENT: "mapping start", + yaml_MAPPING_END_EVENT: "mapping end", + yaml_TAIL_COMMENT_EVENT: "tail comment", +} + +func (e yaml_event_type_t) String() string { + if e < 0 || int(e) >= len(eventStrings) { + return fmt.Sprintf("unknown event %d", e) + } + return eventStrings[e] +} + +// The event structure. +type yaml_event_t struct { + + // The event type. + typ yaml_event_type_t + + // The start and end of the event. + start_mark, end_mark yaml_mark_t + + // The document encoding (for yaml_STREAM_START_EVENT). + encoding yaml_encoding_t + + // The version directive (for yaml_DOCUMENT_START_EVENT). + version_directive *yaml_version_directive_t + + // The list of tag directives (for yaml_DOCUMENT_START_EVENT). + tag_directives []yaml_tag_directive_t + + // The comments + head_comment []byte + line_comment []byte + foot_comment []byte + tail_comment []byte + + // The anchor (for yaml_SCALAR_EVENT, yaml_SEQUENCE_START_EVENT, yaml_MAPPING_START_EVENT, yaml_ALIAS_EVENT). + anchor []byte + + // The tag (for yaml_SCALAR_EVENT, yaml_SEQUENCE_START_EVENT, yaml_MAPPING_START_EVENT). + tag []byte + + // The scalar value (for yaml_SCALAR_EVENT). + value []byte + + // Is the document start/end indicator implicit, or the tag optional? + // (for yaml_DOCUMENT_START_EVENT, yaml_DOCUMENT_END_EVENT, yaml_SEQUENCE_START_EVENT, yaml_MAPPING_START_EVENT, yaml_SCALAR_EVENT). + implicit bool + + // Is the tag optional for any non-plain style? (for yaml_SCALAR_EVENT). + quoted_implicit bool + + // The style (for yaml_SCALAR_EVENT, yaml_SEQUENCE_START_EVENT, yaml_MAPPING_START_EVENT). + style yaml_style_t +} + +func (e *yaml_event_t) scalar_style() yaml_scalar_style_t { return yaml_scalar_style_t(e.style) } +func (e *yaml_event_t) sequence_style() yaml_sequence_style_t { return yaml_sequence_style_t(e.style) } +func (e *yaml_event_t) mapping_style() yaml_mapping_style_t { return yaml_mapping_style_t(e.style) } + +// Nodes + +const ( + yaml_NULL_TAG = "tag:yaml.org,2002:null" // The tag !!null with the only possible value: null. + yaml_BOOL_TAG = "tag:yaml.org,2002:bool" // The tag !!bool with the values: true and false. + yaml_STR_TAG = "tag:yaml.org,2002:str" // The tag !!str for string values. + yaml_INT_TAG = "tag:yaml.org,2002:int" // The tag !!int for integer values. + yaml_FLOAT_TAG = "tag:yaml.org,2002:float" // The tag !!float for float values. + yaml_TIMESTAMP_TAG = "tag:yaml.org,2002:timestamp" // The tag !!timestamp for date and time values. + + yaml_SEQ_TAG = "tag:yaml.org,2002:seq" // The tag !!seq is used to denote sequences. + yaml_MAP_TAG = "tag:yaml.org,2002:map" // The tag !!map is used to denote mapping. + + // Not in original libyaml. + yaml_BINARY_TAG = "tag:yaml.org,2002:binary" + yaml_MERGE_TAG = "tag:yaml.org,2002:merge" + + yaml_DEFAULT_SCALAR_TAG = yaml_STR_TAG // The default scalar tag is !!str. + yaml_DEFAULT_SEQUENCE_TAG = yaml_SEQ_TAG // The default sequence tag is !!seq. + yaml_DEFAULT_MAPPING_TAG = yaml_MAP_TAG // The default mapping tag is !!map. +) + +type yaml_node_type_t int + +// Node types. +const ( + // An empty node. + yaml_NO_NODE yaml_node_type_t = iota + + yaml_SCALAR_NODE // A scalar node. + yaml_SEQUENCE_NODE // A sequence node. + yaml_MAPPING_NODE // A mapping node. +) + +// An element of a sequence node. +type yaml_node_item_t int + +// An element of a mapping node. +type yaml_node_pair_t struct { + key int // The key of the element. + value int // The value of the element. +} + +// The node structure. +type yaml_node_t struct { + typ yaml_node_type_t // The node type. + tag []byte // The node tag. + + // The node data. + + // The scalar parameters (for yaml_SCALAR_NODE). + scalar struct { + value []byte // The scalar value. + length int // The length of the scalar value. + style yaml_scalar_style_t // The scalar style. + } + + // The sequence parameters (for YAML_SEQUENCE_NODE). + sequence struct { + items_data []yaml_node_item_t // The stack of sequence items. + style yaml_sequence_style_t // The sequence style. + } + + // The mapping parameters (for yaml_MAPPING_NODE). + mapping struct { + pairs_data []yaml_node_pair_t // The stack of mapping pairs (key, value). + pairs_start *yaml_node_pair_t // The beginning of the stack. + pairs_end *yaml_node_pair_t // The end of the stack. + pairs_top *yaml_node_pair_t // The top of the stack. + style yaml_mapping_style_t // The mapping style. + } + + start_mark yaml_mark_t // The beginning of the node. + end_mark yaml_mark_t // The end of the node. + +} + +// The document structure. +type yaml_document_t struct { + + // The document nodes. + nodes []yaml_node_t + + // The version directive. + version_directive *yaml_version_directive_t + + // The list of tag directives. + tag_directives_data []yaml_tag_directive_t + tag_directives_start int // The beginning of the tag directives list. + tag_directives_end int // The end of the tag directives list. + + start_implicit int // Is the document start indicator implicit? + end_implicit int // Is the document end indicator implicit? + + // The start/end of the document. + start_mark, end_mark yaml_mark_t +} + +// The prototype of a read handler. +// +// The read handler is called when the parser needs to read more bytes from the +// source. The handler should write not more than size bytes to the buffer. +// The number of written bytes should be set to the size_read variable. +// +// [in,out] data A pointer to an application data specified by +// yaml_parser_set_input(). +// [out] buffer The buffer to write the data from the source. +// [in] size The size of the buffer. +// [out] size_read The actual number of bytes read from the source. +// +// On success, the handler should return 1. If the handler failed, +// the returned value should be 0. On EOF, the handler should set the +// size_read to 0 and return 1. +type yaml_read_handler_t func(parser *yaml_parser_t, buffer []byte) (n int, err error) + +// This structure holds information about a potential simple key. +type yaml_simple_key_t struct { + possible bool // Is a simple key possible? + required bool // Is a simple key required? + token_number int // The number of the token. + mark yaml_mark_t // The position mark. +} + +// The states of the parser. +type yaml_parser_state_t int + +const ( + yaml_PARSE_STREAM_START_STATE yaml_parser_state_t = iota + + yaml_PARSE_IMPLICIT_DOCUMENT_START_STATE // Expect the beginning of an implicit document. + yaml_PARSE_DOCUMENT_START_STATE // Expect DOCUMENT-START. + yaml_PARSE_DOCUMENT_CONTENT_STATE // Expect the content of a document. + yaml_PARSE_DOCUMENT_END_STATE // Expect DOCUMENT-END. + yaml_PARSE_BLOCK_NODE_STATE // Expect a block node. + yaml_PARSE_BLOCK_NODE_OR_INDENTLESS_SEQUENCE_STATE // Expect a block node or indentless sequence. + yaml_PARSE_FLOW_NODE_STATE // Expect a flow node. + yaml_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE // Expect the first entry of a block sequence. + yaml_PARSE_BLOCK_SEQUENCE_ENTRY_STATE // Expect an entry of a block sequence. + yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE // Expect an entry of an indentless sequence. + yaml_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE // Expect the first key of a block mapping. + yaml_PARSE_BLOCK_MAPPING_KEY_STATE // Expect a block mapping key. + yaml_PARSE_BLOCK_MAPPING_VALUE_STATE // Expect a block mapping value. + yaml_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE // Expect the first entry of a flow sequence. + yaml_PARSE_FLOW_SEQUENCE_ENTRY_STATE // Expect an entry of a flow sequence. + yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE // Expect a key of an ordered mapping. + yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE // Expect a value of an ordered mapping. + yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE // Expect the and of an ordered mapping entry. + yaml_PARSE_FLOW_MAPPING_FIRST_KEY_STATE // Expect the first key of a flow mapping. + yaml_PARSE_FLOW_MAPPING_KEY_STATE // Expect a key of a flow mapping. + yaml_PARSE_FLOW_MAPPING_VALUE_STATE // Expect a value of a flow mapping. + yaml_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE // Expect an empty value of a flow mapping. + yaml_PARSE_END_STATE // Expect nothing. +) + +func (ps yaml_parser_state_t) String() string { + switch ps { + case yaml_PARSE_STREAM_START_STATE: + return "yaml_PARSE_STREAM_START_STATE" + case yaml_PARSE_IMPLICIT_DOCUMENT_START_STATE: + return "yaml_PARSE_IMPLICIT_DOCUMENT_START_STATE" + case yaml_PARSE_DOCUMENT_START_STATE: + return "yaml_PARSE_DOCUMENT_START_STATE" + case yaml_PARSE_DOCUMENT_CONTENT_STATE: + return "yaml_PARSE_DOCUMENT_CONTENT_STATE" + case yaml_PARSE_DOCUMENT_END_STATE: + return "yaml_PARSE_DOCUMENT_END_STATE" + case yaml_PARSE_BLOCK_NODE_STATE: + return "yaml_PARSE_BLOCK_NODE_STATE" + case yaml_PARSE_BLOCK_NODE_OR_INDENTLESS_SEQUENCE_STATE: + return "yaml_PARSE_BLOCK_NODE_OR_INDENTLESS_SEQUENCE_STATE" + case yaml_PARSE_FLOW_NODE_STATE: + return "yaml_PARSE_FLOW_NODE_STATE" + case yaml_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE: + return "yaml_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE" + case yaml_PARSE_BLOCK_SEQUENCE_ENTRY_STATE: + return "yaml_PARSE_BLOCK_SEQUENCE_ENTRY_STATE" + case yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE: + return "yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE" + case yaml_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE: + return "yaml_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE" + case yaml_PARSE_BLOCK_MAPPING_KEY_STATE: + return "yaml_PARSE_BLOCK_MAPPING_KEY_STATE" + case yaml_PARSE_BLOCK_MAPPING_VALUE_STATE: + return "yaml_PARSE_BLOCK_MAPPING_VALUE_STATE" + case yaml_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE: + return "yaml_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE" + case yaml_PARSE_FLOW_SEQUENCE_ENTRY_STATE: + return "yaml_PARSE_FLOW_SEQUENCE_ENTRY_STATE" + case yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE: + return "yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE" + case yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE: + return "yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE" + case yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE: + return "yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE" + case yaml_PARSE_FLOW_MAPPING_FIRST_KEY_STATE: + return "yaml_PARSE_FLOW_MAPPING_FIRST_KEY_STATE" + case yaml_PARSE_FLOW_MAPPING_KEY_STATE: + return "yaml_PARSE_FLOW_MAPPING_KEY_STATE" + case yaml_PARSE_FLOW_MAPPING_VALUE_STATE: + return "yaml_PARSE_FLOW_MAPPING_VALUE_STATE" + case yaml_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE: + return "yaml_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE" + case yaml_PARSE_END_STATE: + return "yaml_PARSE_END_STATE" + } + return "" +} + +// This structure holds aliases data. +type yaml_alias_data_t struct { + anchor []byte // The anchor. + index int // The node id. + mark yaml_mark_t // The anchor mark. +} + +// The parser structure. +// +// All members are internal. Manage the structure using the +// yaml_parser_ family of functions. +type yaml_parser_t struct { + + // Error handling + + error yaml_error_type_t // Error type. + + problem string // Error description. + + // The byte about which the problem occurred. + problem_offset int + problem_value int + problem_mark yaml_mark_t + + // The error context. + context string + context_mark yaml_mark_t + + // Reader stuff + + read_handler yaml_read_handler_t // Read handler. + + input_reader io.Reader // File input data. + input []byte // String input data. + input_pos int + + eof bool // EOF flag + + buffer []byte // The working buffer. + buffer_pos int // The current position of the buffer. + + unread int // The number of unread characters in the buffer. + + newlines int // The number of line breaks since last non-break/non-blank character + + raw_buffer []byte // The raw buffer. + raw_buffer_pos int // The current position of the buffer. + + encoding yaml_encoding_t // The input encoding. + + offset int // The offset of the current position (in bytes). + mark yaml_mark_t // The mark of the current position. + + // Comments + + head_comment []byte // The current head comments + line_comment []byte // The current line comments + foot_comment []byte // The current foot comments + tail_comment []byte // Foot comment that happens at the end of a block. + stem_comment []byte // Comment in item preceding a nested structure (list inside list item, etc) + + comments []yaml_comment_t // The folded comments for all parsed tokens + comments_head int + + // Scanner stuff + + stream_start_produced bool // Have we started to scan the input stream? + stream_end_produced bool // Have we reached the end of the input stream? + + flow_level int // The number of unclosed '[' and '{' indicators. + + tokens []yaml_token_t // The tokens queue. + tokens_head int // The head of the tokens queue. + tokens_parsed int // The number of tokens fetched from the queue. + token_available bool // Does the tokens queue contain a token ready for dequeueing. + + indent int // The current indentation level. + indents []int // The indentation levels stack. + + simple_key_allowed bool // May a simple key occur at the current position? + simple_keys []yaml_simple_key_t // The stack of simple keys. + simple_keys_by_tok map[int]int // possible simple_key indexes indexed by token_number + + // Parser stuff + + state yaml_parser_state_t // The current parser state. + states []yaml_parser_state_t // The parser states stack. + marks []yaml_mark_t // The stack of marks. + tag_directives []yaml_tag_directive_t // The list of TAG directives. + + // Dumper stuff + + aliases []yaml_alias_data_t // The alias data. + + document *yaml_document_t // The currently parsed document. +} + +type yaml_comment_t struct { + + scan_mark yaml_mark_t // Position where scanning for comments started + token_mark yaml_mark_t // Position after which tokens will be associated with this comment + start_mark yaml_mark_t // Position of '#' comment mark + end_mark yaml_mark_t // Position where comment terminated + + head []byte + line []byte + foot []byte +} + +// Emitter Definitions + +// The prototype of a write handler. +// +// The write handler is called when the emitter needs to flush the accumulated +// characters to the output. The handler should write @a size bytes of the +// @a buffer to the output. +// +// @param[in,out] data A pointer to an application data specified by +// yaml_emitter_set_output(). +// @param[in] buffer The buffer with bytes to be written. +// @param[in] size The size of the buffer. +// +// @returns On success, the handler should return @c 1. If the handler failed, +// the returned value should be @c 0. +// +type yaml_write_handler_t func(emitter *yaml_emitter_t, buffer []byte) error + +type yaml_emitter_state_t int + +// The emitter states. +const ( + // Expect STREAM-START. + yaml_EMIT_STREAM_START_STATE yaml_emitter_state_t = iota + + yaml_EMIT_FIRST_DOCUMENT_START_STATE // Expect the first DOCUMENT-START or STREAM-END. + yaml_EMIT_DOCUMENT_START_STATE // Expect DOCUMENT-START or STREAM-END. + yaml_EMIT_DOCUMENT_CONTENT_STATE // Expect the content of a document. + yaml_EMIT_DOCUMENT_END_STATE // Expect DOCUMENT-END. + yaml_EMIT_FLOW_SEQUENCE_FIRST_ITEM_STATE // Expect the first item of a flow sequence. + yaml_EMIT_FLOW_SEQUENCE_TRAIL_ITEM_STATE // Expect the next item of a flow sequence, with the comma already written out + yaml_EMIT_FLOW_SEQUENCE_ITEM_STATE // Expect an item of a flow sequence. + yaml_EMIT_FLOW_MAPPING_FIRST_KEY_STATE // Expect the first key of a flow mapping. + yaml_EMIT_FLOW_MAPPING_TRAIL_KEY_STATE // Expect the next key of a flow mapping, with the comma already written out + yaml_EMIT_FLOW_MAPPING_KEY_STATE // Expect a key of a flow mapping. + yaml_EMIT_FLOW_MAPPING_SIMPLE_VALUE_STATE // Expect a value for a simple key of a flow mapping. + yaml_EMIT_FLOW_MAPPING_VALUE_STATE // Expect a value of a flow mapping. + yaml_EMIT_BLOCK_SEQUENCE_FIRST_ITEM_STATE // Expect the first item of a block sequence. + yaml_EMIT_BLOCK_SEQUENCE_ITEM_STATE // Expect an item of a block sequence. + yaml_EMIT_BLOCK_MAPPING_FIRST_KEY_STATE // Expect the first key of a block mapping. + yaml_EMIT_BLOCK_MAPPING_KEY_STATE // Expect the key of a block mapping. + yaml_EMIT_BLOCK_MAPPING_SIMPLE_VALUE_STATE // Expect a value for a simple key of a block mapping. + yaml_EMIT_BLOCK_MAPPING_VALUE_STATE // Expect a value of a block mapping. + yaml_EMIT_END_STATE // Expect nothing. +) + +// The emitter structure. +// +// All members are internal. Manage the structure using the @c yaml_emitter_ +// family of functions. +type yaml_emitter_t struct { + + // Error handling + + error yaml_error_type_t // Error type. + problem string // Error description. + + // Writer stuff + + write_handler yaml_write_handler_t // Write handler. + + output_buffer *[]byte // String output data. + output_writer io.Writer // File output data. + + buffer []byte // The working buffer. + buffer_pos int // The current position of the buffer. + + raw_buffer []byte // The raw buffer. + raw_buffer_pos int // The current position of the buffer. + + encoding yaml_encoding_t // The stream encoding. + + // Emitter stuff + + canonical bool // If the output is in the canonical style? + best_indent int // The number of indentation spaces. + best_width int // The preferred width of the output lines. + unicode bool // Allow unescaped non-ASCII characters? + line_break yaml_break_t // The preferred line break. + + state yaml_emitter_state_t // The current emitter state. + states []yaml_emitter_state_t // The stack of states. + + events []yaml_event_t // The event queue. + events_head int // The head of the event queue. + + indents []int // The stack of indentation levels. + + tag_directives []yaml_tag_directive_t // The list of tag directives. + + indent int // The current indentation level. + + flow_level int // The current flow level. + + root_context bool // Is it the document root context? + sequence_context bool // Is it a sequence context? + mapping_context bool // Is it a mapping context? + simple_key_context bool // Is it a simple mapping key context? + + line int // The current line. + column int // The current column. + whitespace bool // If the last character was a whitespace? + indention bool // If the last character was an indentation character (' ', '-', '?', ':')? + open_ended bool // If an explicit document end is required? + + space_above bool // Is there's an empty line above? + foot_indent int // The indent used to write the foot comment above, or -1 if none. + + // Anchor analysis. + anchor_data struct { + anchor []byte // The anchor value. + alias bool // Is it an alias? + } + + // Tag analysis. + tag_data struct { + handle []byte // The tag handle. + suffix []byte // The tag suffix. + } + + // Scalar analysis. + scalar_data struct { + value []byte // The scalar value. + multiline bool // Does the scalar contain line breaks? + flow_plain_allowed bool // Can the scalar be expessed in the flow plain style? + block_plain_allowed bool // Can the scalar be expressed in the block plain style? + single_quoted_allowed bool // Can the scalar be expressed in the single quoted style? + block_allowed bool // Can the scalar be expressed in the literal or folded styles? + style yaml_scalar_style_t // The output style. + } + + // Comments + head_comment []byte + line_comment []byte + foot_comment []byte + tail_comment []byte + + key_line_comment []byte + + // Dumper stuff + + opened bool // If the stream was already opened? + closed bool // If the stream was already closed? + + // The information associated with the document nodes. + anchors *struct { + references int // The number of references. + anchor int // The anchor id. + serialized bool // If the node has been emitted? + } + + last_anchor_id int // The last assigned anchor id. + + document *yaml_document_t // The currently emitted document. +} diff --git a/vendor/gopkg.in/yaml.v3/yamlprivateh.go b/vendor/gopkg.in/yaml.v3/yamlprivateh.go new file mode 100644 index 000000000..e88f9c54a --- /dev/null +++ b/vendor/gopkg.in/yaml.v3/yamlprivateh.go @@ -0,0 +1,198 @@ +// +// Copyright (c) 2011-2019 Canonical Ltd +// Copyright (c) 2006-2010 Kirill Simonov +// +// Permission is hereby granted, free of charge, to any person obtaining a copy of +// this software and associated documentation files (the "Software"), to deal in +// the Software without restriction, including without limitation the rights to +// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies +// of the Software, and to permit persons to whom the Software is furnished to do +// so, subject to the following conditions: +// +// The above copyright notice and this permission notice shall be included in all +// copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +// SOFTWARE. + +package yaml + +const ( + // The size of the input raw buffer. + input_raw_buffer_size = 512 + + // The size of the input buffer. + // It should be possible to decode the whole raw buffer. + input_buffer_size = input_raw_buffer_size * 3 + + // The size of the output buffer. + output_buffer_size = 128 + + // The size of the output raw buffer. + // It should be possible to encode the whole output buffer. + output_raw_buffer_size = (output_buffer_size*2 + 2) + + // The size of other stacks and queues. + initial_stack_size = 16 + initial_queue_size = 16 + initial_string_size = 16 +) + +// Check if the character at the specified position is an alphabetical +// character, a digit, '_', or '-'. +func is_alpha(b []byte, i int) bool { + return b[i] >= '0' && b[i] <= '9' || b[i] >= 'A' && b[i] <= 'Z' || b[i] >= 'a' && b[i] <= 'z' || b[i] == '_' || b[i] == '-' +} + +// Check if the character at the specified position is a digit. +func is_digit(b []byte, i int) bool { + return b[i] >= '0' && b[i] <= '9' +} + +// Get the value of a digit. +func as_digit(b []byte, i int) int { + return int(b[i]) - '0' +} + +// Check if the character at the specified position is a hex-digit. +func is_hex(b []byte, i int) bool { + return b[i] >= '0' && b[i] <= '9' || b[i] >= 'A' && b[i] <= 'F' || b[i] >= 'a' && b[i] <= 'f' +} + +// Get the value of a hex-digit. +func as_hex(b []byte, i int) int { + bi := b[i] + if bi >= 'A' && bi <= 'F' { + return int(bi) - 'A' + 10 + } + if bi >= 'a' && bi <= 'f' { + return int(bi) - 'a' + 10 + } + return int(bi) - '0' +} + +// Check if the character is ASCII. +func is_ascii(b []byte, i int) bool { + return b[i] <= 0x7F +} + +// Check if the character at the start of the buffer can be printed unescaped. +func is_printable(b []byte, i int) bool { + return ((b[i] == 0x0A) || // . == #x0A + (b[i] >= 0x20 && b[i] <= 0x7E) || // #x20 <= . <= #x7E + (b[i] == 0xC2 && b[i+1] >= 0xA0) || // #0xA0 <= . <= #xD7FF + (b[i] > 0xC2 && b[i] < 0xED) || + (b[i] == 0xED && b[i+1] < 0xA0) || + (b[i] == 0xEE) || + (b[i] == 0xEF && // #xE000 <= . <= #xFFFD + !(b[i+1] == 0xBB && b[i+2] == 0xBF) && // && . != #xFEFF + !(b[i+1] == 0xBF && (b[i+2] == 0xBE || b[i+2] == 0xBF)))) +} + +// Check if the character at the specified position is NUL. +func is_z(b []byte, i int) bool { + return b[i] == 0x00 +} + +// Check if the beginning of the buffer is a BOM. +func is_bom(b []byte, i int) bool { + return b[0] == 0xEF && b[1] == 0xBB && b[2] == 0xBF +} + +// Check if the character at the specified position is space. +func is_space(b []byte, i int) bool { + return b[i] == ' ' +} + +// Check if the character at the specified position is tab. +func is_tab(b []byte, i int) bool { + return b[i] == '\t' +} + +// Check if the character at the specified position is blank (space or tab). +func is_blank(b []byte, i int) bool { + //return is_space(b, i) || is_tab(b, i) + return b[i] == ' ' || b[i] == '\t' +} + +// Check if the character at the specified position is a line break. +func is_break(b []byte, i int) bool { + return (b[i] == '\r' || // CR (#xD) + b[i] == '\n' || // LF (#xA) + b[i] == 0xC2 && b[i+1] == 0x85 || // NEL (#x85) + b[i] == 0xE2 && b[i+1] == 0x80 && b[i+2] == 0xA8 || // LS (#x2028) + b[i] == 0xE2 && b[i+1] == 0x80 && b[i+2] == 0xA9) // PS (#x2029) +} + +func is_crlf(b []byte, i int) bool { + return b[i] == '\r' && b[i+1] == '\n' +} + +// Check if the character is a line break or NUL. +func is_breakz(b []byte, i int) bool { + //return is_break(b, i) || is_z(b, i) + return ( + // is_break: + b[i] == '\r' || // CR (#xD) + b[i] == '\n' || // LF (#xA) + b[i] == 0xC2 && b[i+1] == 0x85 || // NEL (#x85) + b[i] == 0xE2 && b[i+1] == 0x80 && b[i+2] == 0xA8 || // LS (#x2028) + b[i] == 0xE2 && b[i+1] == 0x80 && b[i+2] == 0xA9 || // PS (#x2029) + // is_z: + b[i] == 0) +} + +// Check if the character is a line break, space, or NUL. +func is_spacez(b []byte, i int) bool { + //return is_space(b, i) || is_breakz(b, i) + return ( + // is_space: + b[i] == ' ' || + // is_breakz: + b[i] == '\r' || // CR (#xD) + b[i] == '\n' || // LF (#xA) + b[i] == 0xC2 && b[i+1] == 0x85 || // NEL (#x85) + b[i] == 0xE2 && b[i+1] == 0x80 && b[i+2] == 0xA8 || // LS (#x2028) + b[i] == 0xE2 && b[i+1] == 0x80 && b[i+2] == 0xA9 || // PS (#x2029) + b[i] == 0) +} + +// Check if the character is a line break, space, tab, or NUL. +func is_blankz(b []byte, i int) bool { + //return is_blank(b, i) || is_breakz(b, i) + return ( + // is_blank: + b[i] == ' ' || b[i] == '\t' || + // is_breakz: + b[i] == '\r' || // CR (#xD) + b[i] == '\n' || // LF (#xA) + b[i] == 0xC2 && b[i+1] == 0x85 || // NEL (#x85) + b[i] == 0xE2 && b[i+1] == 0x80 && b[i+2] == 0xA8 || // LS (#x2028) + b[i] == 0xE2 && b[i+1] == 0x80 && b[i+2] == 0xA9 || // PS (#x2029) + b[i] == 0) +} + +// Determine the width of the character. +func width(b byte) int { + // Don't replace these by a switch without first + // confirming that it is being inlined. + if b&0x80 == 0x00 { + return 1 + } + if b&0xE0 == 0xC0 { + return 2 + } + if b&0xF0 == 0xE0 { + return 3 + } + if b&0xF8 == 0xF0 { + return 4 + } + return 0 + +} diff --git a/vendor/modules.txt b/vendor/modules.txt index 4a8d087ec..3552b7a55 100644 --- a/vendor/modules.txt +++ b/vendor/modules.txt @@ -9,8 +9,8 @@ github.com/MakeNowJust/heredoc github.com/PuerkitoBio/purell # github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578 github.com/PuerkitoBio/urlesc -# github.com/cpuguy83/go-md2man v1.0.10 -github.com/cpuguy83/go-md2man/md2man +# github.com/cpuguy83/go-md2man/v2 v2.0.2 +github.com/cpuguy83/go-md2man/v2/md2man # github.com/davecgh/go-spew v1.1.1 github.com/davecgh/go-spew/spew # github.com/docker/docker v0.7.3-0.20190327010347-be7ac8be2ae0 @@ -91,7 +91,7 @@ github.com/hashicorp/hcl/json/scanner github.com/hashicorp/hcl/json/token # github.com/imdario/mergo v0.3.9 github.com/imdario/mergo -# github.com/inconshreveable/mousetrap v1.0.0 +# github.com/inconshreveable/mousetrap v1.0.1 github.com/inconshreveable/mousetrap # github.com/json-iterator/go v1.1.10 github.com/json-iterator/go @@ -130,6 +130,8 @@ github.com/prometheus/client_golang/api/prometheus/v1 github.com/prometheus/common/model # github.com/russross/blackfriday v1.5.2 github.com/russross/blackfriday +# github.com/russross/blackfriday/v2 v2.1.0 +github.com/russross/blackfriday/v2 # github.com/sirupsen/logrus v1.4.2 github.com/sirupsen/logrus # github.com/spf13/afero v1.2.2 @@ -137,7 +139,7 @@ github.com/spf13/afero github.com/spf13/afero/mem # github.com/spf13/cast v1.3.0 github.com/spf13/cast -# github.com/spf13/cobra v0.0.5 +# github.com/spf13/cobra v1.6.1 github.com/spf13/cobra github.com/spf13/cobra/doc # github.com/spf13/jwalterweatherman v1.0.0 @@ -231,6 +233,8 @@ gopkg.in/inf.v0 gopkg.in/ini.v1 # gopkg.in/yaml.v2 v2.3.0 gopkg.in/yaml.v2 +# gopkg.in/yaml.v3 v3.0.1 +gopkg.in/yaml.v3 # istio.io/api v0.0.0-20180824201241-76349c53b87f istio.io/api/networking/v1alpha3 # k8s.io/api v0.18.6 => k8s.io/api v0.18.5