pr-check-file-encodings.yml

name: check file encodings in PR
on: 
  pull_request:
  merge_group:
jobs:
  file-encoding:
    name: file encoding check
    runs-on: ubuntu-latest
    timeout-minutes: 5

    steps:
      - name: run the checkout action
        uses: actions/checkout@v4
        with:
          fetch-depth: 0
      - name: list all changed files
        run: |
          files=$(git diff --name-only origin/main...${{ github.sha }})
          IFS=$'\n'; files=($files); unset IFS;  # split the string into an array
          file --mime "${files[@]}"
      - name: list all changed files with the wrong encoding
        run: |
          files=$(git diff --name-only origin/main...${{ github.sha }})
          IFS=$'\n'; files=($files); unset IFS;  # split the string into an array
          ! file --mime "${files[@]}" | grep -v "charset=utf-8\|charset=us-ascii\|charset=binary\| (No such file or directory)$"