formatting.yml

name: Code Formatting

on:
  push:
    branches: [main, development]
  pull_request:
    branches: [main, development]

jobs:
  format:
    runs-on: macos-latest

    steps:
      - uses: actions/checkout@v5

      - name: Install clang-format
        run: brew install clang-format || true

      # Fail loudly if clang-format is missing — otherwise the check below
      # would pass vacuously on empty output.
      - name: Verify clang-format is available
        run: clang-format --version

      # The \( ... \) grouping matters: without it, -print0 binds only to
      # the *.h branch and .c files are never checked.
      - name: Check C formatting
        run: |
          misformatted=$(find . \( -name '*.c' -o -name '*.h' \) -print0 | xargs -0 clang-format -style=file -output-replacements-xml | grep "<replacement " || true)
          if [ -n "$misformatted" ]; then
            echo "ERROR: Some files are not properly formatted. Run clang-format -i."
            exit 1
          else
            echo "All files are properly formatted."
            exit 0
          fi