githooks-pre-push

#!/bin/bash

z40=0000000000000000000000000000000000000000
while read local_ref local_sha remote_ref remote_sha
do
  echo "$0 $@"
  echo "local_ref ${local_ref}"
  echo "local_sha ${local_sha}"
  echo "remote_ref ${remote_ref}"
  echo "remote_sha ${remote_sha}"

  # Don't allow pushing to remote "mywork" unless the branch name starts
  # with my username. Only works if the Github CLI is installed
  if type -t gh 2>&1 >/dev/null
  then
    username=$( gh api user --jq ".login" )
    echo "Pushing to $1 for $username"
    if [[ "$local_ref" == "(delete)" ]]
    then
      branch=$(
        git rev-parse --abbrev-ref --symbolic-full-name "${remote_ref}"
      )
    else
      branch=$(
        git rev-parse --abbrev-ref --symbolic-full-name "${local_ref}"
      )
    fi
    echo "---- Branch name is ${branch}"
    if [[ -n "${username}" && "$1" == "mywork" ]]
    then
      if ! [[ "${branch}" =~ ^${username}/ ]]
      then
        echo "---- Bad branch name"
        exit 1
      fi
    elif [[ -n "${username}" && "$1" == "origin" ]]
    then
      if [[ "${branch}" =~ ^${username}/ ]]
      then
        echo "---- Bad branch name"
        exit 1
      fi
    fi
  fi


  # Format all files that are different from the remote, committed or not
  if [[ -f .clang-format ]] && type -t git-clang-format >& /dev/null \
    && [[ ! -f "diff.$(git rev-parse --abbrev-ref HEAD | sed 's/\//./g')" ]]
  then
      if [[ "${#branches}" -gt 0 || "${local_ref}" == "(delete)" ]]
      then
        continue
      fi
      if [ "${remote_sha}" = ${z40} ]
      then
        # new branch
        base="upstream/$( git head-branch upstream )" || \
          base="origin/$( git head-branch origin )" || \
          ( r=$( git remote | head -1 ) && \
            base="$r/$( git head-branch $r )" )
        branches=( "${base}" "${local_ref}" )
      else
        branches=( "${remote_sha}" "${local_ref}" )
        if type -t gh 2>&1 >/dev/null && \
          [[ "$( gh base )" != "" ]]
        then
          branches=( $( gh base ) "${local_ref}" )
        elif false && [[ "${compare}" != "${remote_sha}" ]] && \
          git branch -r | grep -q "upstream/develop"
        then
          branches=( "upstream/develop" "${local_ref}" )
        fi
      fi
      if [[ -e .pre-commit-config.yaml && \
        -e $( git config core.hookspath )/pre-commit ]] && \
        type -t pre-commit 2>&1 >/dev/null
      then
        pre-commit run -a
      else
        echo "Get common ancestor of ${branches[@]}"
        compare=$( git merge-base --octopus "${branches[@]}" )
        echo "Checking formatting of files changed since ${compare}:"
        git log -1 ${compare} | head -10
        git-clang-format --extensions c,cpp,h,cxx,ipp "${compare}"
      fi

    # Only uncomment the following line if you want to aggressively ensure
    # that all formatting across the project is correct, and your version
    # of `clang-format` doesn't have any incompatibilities.
    # find src/ripple src/test -type f \( -name '*.cpp' -o -name '*.h' -o -name '*.ipp' \) -print0 | xargs -0 clang-format -i

    # Comment the following line if you want to let the push complete even if
    # there are formatting problems.
    git diff --exit-code
  fi
done