.github/workflows/check-whitespace.yml

   1 name: check-whitespace
   2
   3 # Get the repo with the commits(+1) in the series.
   4 # Process `git log --check` output to extract just the check errors.
   5 # Add a comment to the pull request with the check errors.
   6
   7 on:
   8   pull_request:
   9     types: [opened, synchronize]
  10
  11 jobs:
  12   check-whitespace:
  13     runs-on: ubuntu-latest
  14     steps:
  15     - name: Set commit count
  16       shell: bash
  17       run: echo "COMMIT_DEPTH=$((1+$COMMITS))" >>$GITHUB_ENV
  18       env:
  19         COMMITS: ${{ github.event.pull_request.commits }}
  20
  21     - uses: actions/checkout@v2
  22       with:
  23         fetch-depth: ${{ env.COMMIT_DEPTH }}
  24
  25     - name: git log --check
  26       id: check_out
  27       run: |
  28         log=
  29         commit=
  30         while read dash etc
  31         do
  32           case "${dash}" in
  33           "---")
  34             commit="${etc}"
  35             ;;
  36           "")
  37             ;;
  38           *)
  39             if test -n "${commit}"
  40             then
  41               log="${log}\n${commit}"
  42               echo ""
  43               echo "--- ${commit}"
  44             fi
  45             commit=
  46             log="${log}\n${dash} ${etc}"
  47             echo "${dash} ${etc}"
  48             ;;
  49           esac
  50         done <<< $(git log --check --pretty=format:"---% h% s" -${{github.event.pull_request.commits}})
  51
  52         if test -n "${log}"
  53         then
  54           echo "::set-output name=checkout::"${log}""
  55           exit 2
  56         fi
  57
  58     - name: Add Check Output as Comment
  59       uses: actions/github-script@v3
  60       id: add-comment
  61       with:
  62         script: |
  63             github.issues.createComment({
  64               issue_number: context.issue.number,
  65               owner: context.repo.owner,
  66               repo: context.repo.repo,
  67               body: "Whitespace errors found in workflow ${{ github.workflow }}:\n\n${{ steps.check_out.outputs.checkout }}"
  68             })
  69       if: ${{ failure() }}