This GitHub Action applies clang-format to check the formatting of your C++ codebase. It's designed to ensure your code adheres to a consistent style by checking it against the formatting rules defined in your .clang-format file.

This check will be performed on every push, and you can see the results even on your pull requests.

To integrate this action into your workflow, add a .github/workflows/clang-format-check.yml file to your repository with the following content:

name: clang-format Check
on: [push]
jobs:
  formatting-check:
    name: Formatting Check
    runs-on: ubuntu-20.04
    steps:
    - uses: actions/checkout@v2
    - name: Run clang-format style check for Cpp programs.
      uses: ydementieiev/clang-format-action-cpp@master
      with:
        include_folders: 'src,include'               # Optional.
        exclude_folders: 'src/3rdparty,src/external' # Optional.
        style_guide: 'some_folder/.clang-format'     # Optional.

This configuration will trigger the clang-format check on every push to the repository. It will check files in the include_folders directories, while excluding any files found in exclude_folders. But you can customize folders as described below.

• include_folders: Comma-separated list of folders to include in the formatting check. It's not required and default is './'.
• exclude_folders: Comma-separated list of folders to exclude from the formatting check. It's not required and default is ''.
• style_guide: Path to the clang-format style guide file. Adjust if your style guide file is located elsewhere. It's not required and defaults to .clang-format at the project's root.

Contributions to improve this action are welcome! Feel free to open issues or submit pull requests.