Added --no-overwrite flag in lib install command (#1793)

* Added no_overwrite field in LibraryInstall

* Added tests

* Check if libraries needs to be installed prior to download/install

* Update rpc/cc/arduino/cli/commands/v1/lib.proto

Co-authored-by: per1234 <accounts@perglass.com>

Co-authored-by: per1234 <accounts@perglass.com>

Author: cmaglie

cli/lib/install.go

@@ -37,9 +37,10 @@ import (
 )
 
 var (
-	noDeps  bool
-	gitURL  bool
-	zipPath bool
+	noDeps      bool
+	noOverwrite bool
+	gitURL      bool
+	zipPath     bool
 )
 
 func initInstallCommand() *cobra.Command {
@@ -59,6 +60,7 @@ func initInstallCommand() *cobra.Command {
 		},
 	}
 	installCommand.Flags().BoolVar(&noDeps, "no-deps", false, tr("Do not install dependencies."))
+	installCommand.Flags().BoolVar(&noOverwrite, "no-overwrite", false, tr("Do not overwrite already installed libraries."))
 	installCommand.Flags().BoolVar(&gitURL, "git-url", false, tr("Enter git url for libraries hosted on repositories"))
 	installCommand.Flags().BoolVar(&zipPath, "zip-path", false, tr("Enter a path to zip file"))
 	return installCommand
@@ -87,7 +89,7 @@ func runInstallCommand(cmd *cobra.Command, args []string) {
 			err := lib.ZipLibraryInstall(context.Background(), &rpc.ZipLibraryInstallRequest{
 				Instance:  instance,
 				Path:      path,
-				Overwrite: true,
+				Overwrite: !noOverwrite,
 			}, output.TaskProgress())
 			if err != nil {
 				feedback.Errorf(tr("Error installing Zip Library: %v"), err)
@@ -110,7 +112,7 @@ func runInstallCommand(cmd *cobra.Command, args []string) {
 			err := lib.GitLibraryInstall(context.Background(), &rpc.GitLibraryInstallRequest{
 				Instance:  instance,
 				Url:       url,
-				Overwrite: true,
+				Overwrite: !noOverwrite,
 			}, output.TaskProgress())
 			if err != nil {
 				feedback.Errorf(tr("Error installing Git Library: %v"), err)
@@ -128,10 +130,11 @@ func runInstallCommand(cmd *cobra.Command, args []string) {
 
 	for _, libRef := range libRefs {
 		libraryInstallRequest := &rpc.LibraryInstallRequest{
-			Instance: instance,
-			Name:     libRef.Name,
-			Version:  libRef.Version,
-			NoDeps:   noDeps,
+			Instance:    instance,
+			Name:        libRef.Name,
+			Version:     libRef.Version,
+			NoDeps:      noDeps,
+			NoOverwrite: noOverwrite,
 		}
 		err := lib.LibraryInstall(context.Background(), libraryInstallRequest, output.ProgressBar(), output.TaskProgress())
 		if err != nil {

commands/lib/install.go

@@ -18,6 +18,7 @@ package lib
 import (
 	"context"
 	"errors"
+	"fmt"
 
 	"github.com/arduino/arduino-cli/arduino"
 	"github.com/arduino/arduino-cli/arduino/libraries/librariesindex"
@@ -64,7 +65,8 @@ func LibraryInstall(ctx context.Context, req *rpc.LibraryInstallRequest, downloa
 		}
 	}
 
-	didInstall := false
+	// Find the libReleasesToInstall to install
+	libReleasesToInstall := []*librariesindex.Release{}
 	for _, lib := range toInstall {
 		libRelease, err := findLibraryIndexRelease(lm, &rpc.LibraryInstallRequest{
 			Name:    lib.Name,
@@ -73,7 +75,31 @@ func LibraryInstall(ctx context.Context, req *rpc.LibraryInstallRequest, downloa
 		if err != nil {
 			return err
 		}
+		libReleasesToInstall = append(libReleasesToInstall, libRelease)
+	}
 
+	// Check if any of the libraries to install is already installed and remove it from the list
+	j := 0
+	for i, libRelease := range libReleasesToInstall {
+		_, libReplaced, err := lm.InstallPrerequisiteCheck(libRelease)
+		if errors.Is(err, librariesmanager.ErrAlreadyInstalled) {
+			taskCB(&rpc.TaskProgress{Message: tr("Already installed %s", libRelease), Completed: true})
+		} else if err != nil {
+			return err
+		} else {
+			libReleasesToInstall[j] = libReleasesToInstall[i]
+			j++
+		}
+		if req.GetNoOverwrite() {
+			if libReplaced != nil {
+				return fmt.Errorf(tr("Library %[1]s is already installed, but with a different version: %[2]s", libRelease, libReplaced))
+			}
+		}
+	}
+	libReleasesToInstall = libReleasesToInstall[:j]
+
+	didInstall := false
+	for _, libRelease := range libReleasesToInstall {
 		if err := downloadLibrary(lm, libRelease, downloadCB, taskCB); err != nil {
 			return err
 		}