check_diff.yml

name: PR analysis

on:
  pull_request:

concurrency:
  group: ${{ github.ref }}-${{ github.head_ref }}-checkdiff
  cancel-in-progress: true

jobs:
  check_diff:
    name: Check files changed
    runs-on: ubuntu-20.04
    env:
      BASE_REF: ${{ github.event.pull_request.base.ref }}
      HEAD_REF: ${{ github.event.pull_request.head.ref }}
    steps:
      - name: Checkout code
        uses: actions/checkout@v4
        with:
          fetch-depth: 0
      - name: Add forked repository as remote
        run: |
          git remote add fork ${{ github.event.pull_request.head.repo.clone_url }}
      - name: Fetch base branch from main repository
        run: |
          git fetch origin ${BASE_REF}
      - name: Fetch head branch from forked repository
        run: |
          git fetch fork ${HEAD_REF}
      - name: Get files changed
        run: |
          git diff --name-only --diff-filter=ACMRTUXB origin/${BASE_REF}..fork/${HEAD_REF} > check_diff.txt
      - name: Check files changed
        run: |
          if grep -v -E "^(Docs|\.github)/|\.azure-pipelines\.yml$" check_diff.txt; then
            echo "skip=false"
            echo "skip=false" >> ${GITHUB_OUTPUT}
          else
            echo "skip=true"
            echo "skip=true" >> ${GITHUB_OUTPUT}
          fi
          echo "GITHUB_OUTPUT = ${GITHUB_OUTPUT}"
    outputs:
      skip: ${{ steps.check.outputs.skip }}