sphinx.yml

# From: https://github.com/rkdarst/sphinx-actions-test/blob/master/.github/workflows/sphinx-build.yml

name: sphinx
on: [push, pull_request]

jobs:
  build-and-deploy:
    name: Build and gh-pages
    runs-on: ubuntu-latest
    steps:
      # https://github.com/marketplace/actions/checkout
      - uses: actions/checkout@v2
      # https://github.com/marketplace/actions/setup-python
      # ^-- This gives info on matrix testing.
      - name: Install Python
        uses: actions/setup-python@v1
        with:
          python-version: 3.8
      - name: Fetch all refs
        run: |
          git fetch
      # I don't know where the "run" thing is documented.
      - name: Install dependencies
        run: |
          pip install -r requirements.txt
      - name: Debugging information
        run: |
          echo "github.ref:" ${{github.ref}}
          echo "github.event_name:" ${{github.event_name}}
          echo "github.head_ref:" ${{github.head_ref}}
          echo "github.base_ref:" ${{github.base_ref}}
          echo "GITHUB_REPOSITORY" "$GITHUB_REPOSITORY"
          echo "GITHUB_ACTION" "$GITHUB_ACTION"
          echo "GITHUB_REF" "$GITHUB_REF"
          git rev-parse --abbrev-ref HEAD
          git branch
          git branch -a
          git remote -v

      # Build
      - uses: ammaraskar/sphinx-problem-matcher@master
      - name: Build Sphinx docs
        run: |
          make dirhtml


      # The following supports building all branches and combining on
      # gh-pages

      # Clone and set up the old gh-pages branch
      - name: Clone old gh-pages
        if: ${{ github.event_name == 'push' }}
        run: |
          set -x
          ( git branch gh-pages remotes/origin/gh-pages && git clone . --branch=gh-pages _gh-pages/ ) || mkdir _gh-pages
          rm -rf _gh-pages/.git/
          mkdir -p _gh-pages/branch/
      # If a push and master, copy build to _gh-pages/ as the "main"
      # deployment.
      - name: Copy new build (master)
        if: ${{ github.event_name == 'push' && github.ref == 'refs/heads/master' }}
        run: |
          set -x
          # Delete everything under _gh-pages/ that is from the
          # primary branch deployment.  Eicludes the other branches
          # _gh-pages/branch-* paths, and not including
          # _gh-pages itself.
          find _gh-pages/ -mindepth 1 ! -path '_gh-pages/branch*' -delete
          rsync -a _build/dirhtml/ _gh-pages/
      # If a push and not on master, then copy the build to
      # _gh-pages/branch/$brname (transforming '/' into '--')
      - name: Copy new build (branch)
        if: ${{ github.event_name == 'push' && github.ref != 'refs/heads/master' }}
        run: |
          set -x
          #brname=$(git rev-parse --abbrev-ref HEAD)
          brname="${{github.ref}}"
          brname="${brname##refs/heads/}"
          brdir=${brname//\//--}   # replace '/' with '--'
          rm -rf   _gh-pages/branch/${brdir}
          rsync -a _build/dirhtml/ _gh-pages/branch/${brdir}
      # Go through each branch in _gh-pages/branch/, if it's not a
      # ref, then delete it.
      - name: Delete old feature branches
        if: ${{ github.event_name == 'push' }}
        run: |
          set -x
          for brdir in `ls _gh-pages/branch/` ; do
              brname=${brdir//--/\/}   # replace '--' with '/'
              if ! git show-ref remotes/origin/$brname ; then
                  echo "Removing $brdir"
                  rm -r _gh-pages/branch/$brdir/
              fi
          done

      # Deploy
      # https://github.com/peaceiris/actions-gh-pages
      - name: Deploy
        uses: peaceiris/actions-gh-pages@v3
        if: ${{ github.event_name == 'push' }}
        #if: ${{ success() && github.event_name == 'push' && github.ref == 'refs/heads/master' }}
        with:
          publish_branch: gh-pages
          github_token: ${{ secrets.GITHUB_TOKEN }}
          publish_dir: _gh-pages/
          force_orphan: true