format.yml

name: Clang format

on: [pull_request]

jobs:
  clang-format:
    runs-on: ubuntu-24.04
    steps:
    - uses: actions/checkout@v4
      with:
        ref: ${{ github.event.pull_request.head.sha }}
    - name: Run clang-format on changed files
      run: |
        set -x
        sudo apt install clang-format
        git config --global --add safe.directory '*'
        git fetch origin ${{ github.event.pull_request.base.ref }}
        git fetch origin pull/${{ github.event.pull_request.number }}/head:${{ github.event.pull_request.head.ref }}
        BASE_COMMIT=$(git rev-parse ${{ github.event.pull_request.base.sha }})
        COMMIT_FILES=$(git diff --name-only "${BASE_COMMIT}" | grep -i -v LinkDef)
        RESULT_OUTPUT=$(git clang-format --commit "${BASE_COMMIT}" --diff --binary "$(which clang-format)" -- "${COMMIT_FILES}")
        if [ "$RESULT_OUTPUT" == "no modified files to format" ] || [ "$RESULT_OUTPUT" == "clang-format did not modify any files" ]; then
          exit 0
        else
          git clang-format --commit "$BASE_COMMIT" --diff --binary "$(which clang-format)"
          echo "$RESULT_OUTPUT"
          exit 1
        fi