clang.yml

name: Clang-format

on:
  pull_request:
    branches: [ "main" ]
  workflow_dispatch:

permissions:
  contents: read

jobs:
  check-formatting:
    name: Formatting Check
    runs-on: ubuntu-latest
    steps:
    - name: Harden Runner
      uses: step-security/harden-runner@8d3c67de8e2fe68ef647c8db1e6a09f647780f40 # v2.19.0
      with:
        egress-policy: audit

    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
    
    - name: Install clang-format
      run: |
        sudo apt-get update
        sudo apt-get install -y clang-format-17

    - name: Run clang-format style check
      run: |
        # Find all C/C++ files, excluding include directory
        files=$(find . -type f \( -name "*.cpp" -o -name "*.h" -o -name "*.c" \) \
          ! -path "./include/*" ! -path "./.git/*" | sort)

        if [ -z "$files" ]; then
          echo "No C/C++ files found"
          exit 0
        fi

        # Check formatting (--dry-run -Werror exits non-zero if changes needed)
        echo "$files" | xargs clang-format-17 --verbose --dry-run -Werror --style=file --fallback-style=Microsoft