name: Commit checker on: pull_request: jobs: commit-checker: name: Commit checker runs-on: ubuntu-latest steps: - name: Checkout uses: actions/checkout@v2 with: fetch-depth: 4 - name: Get pull-request commits run: | set -x # actions/checkout did a merge checkout of the pull-request. As such, the first # commit is the merge commit. This means that on HEAD^ is the base branch, and # on HEAD^2 are the commits from the pull-request. We now check if those trees # have a common parent. If not, we fetch a few more commits till we do. In result, # the log between HEAD^ and HEAD^2 will be the commits in the pull-request. DEPTH=4 while [ -z "$(git merge-base HEAD^ HEAD^2)" ]; do git -c protocol.version=2 fetch --no-tags --prune --progress --no-recurse-submodules --deepen=${DEPTH} origin HEAD DEPTH=$(( ${DEPTH} * 4 )) done # Just to show which commits we are going to evaluate. git log --oneline HEAD^..HEAD^2 - name: Checkout commit-checker uses: actions/checkout@v2 with: repository: OpenTTD/OpenTTD-git-hooks path: git-hooks ref: master - name: Check commits run: | set -x HOOKS_DIR=./git-hooks/hooks GIT_DIR=.git ./git-hooks/hooks/check-commits.sh HEAD^..HEAD^2 echo "Commit checks passed"