name: clang-format

on: [push, pull_request]

jobs:
  check:
    runs-on: ubuntu-18.04
    env:
      CLANG_VERSION: 10
    steps:
    - uses: actions/checkout@v2
    - name: Install clang-format
      run: |
        sudo tee /etc/apt/sources.list.d/llvm.list >/dev/null <<EOF
        deb http://apt.llvm.org/bionic/ llvm-toolchain-bionic-${CLANG_VERSION} main
        deb-src http://apt.llvm.org/bionic/ llvm-toolchain-bionic-${CLANG_VERSION} main
        EOF
        wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add
        sudo apt-get update
        sudo apt-get install clang-format-${CLANG_VERSION}
    - name: Format src/ripple
      run: find src/ripple -type f \( -name '*.cpp' -o -name '*.h' -o -name '*.ipp' \) -print0 | xargs -0 clang-format-${CLANG_VERSION} -i
    - name: Format src/test
      run: find src/test -type f \( -name '*.cpp' -o -name '*.h' -o -name '*.ipp' \) -print0 | xargs -0 clang-format-${CLANG_VERSION} -i
    - name: Check for differences
      run: git diff --exit-code