@@ -0,0 +1,38 @@
1+name: commit-validation
2+on: [ push, pull_request ]
3+
4+jobs:
5+ check-commit-msg-length:
6+ runs-on: ubuntu-latest
7+ steps:
8+ - uses: actions/checkout@v1
9+ - name: Check commit message length
10+ run: |
11+ # Get last commit messages
12+ if [ "${{github.event_name}}" = "push" ]; then
13+ if [ "${{github.event.before}}" = "0000000000000000000000000000000000000000" ]; then
14+ # We are on a new branch
15+ current="$(echo '${{github.ref}}' | sed 's!^refs/heads!origin!')"
16+ readarray -t other < <(git show-ref | awk -F' ' '{ sub(/^refs\/remotes\//,"",$NF); }($NF != "'"$current"'"){print "^" $NF;}')
17+ LOG_RANGE=( "$current" "${other[@]}" )
18+ unset current other
19+ else
20+ # We are on existing branch
21+ LOG_RANGE=( "${{github.event.before}}.." )
22+ fi
23+ elif [ "${{github.event_name}}" = "pull_request" ]; then
24+ LOG_RANGE=( "origin/${{github.base_ref}}.." )
25+ fi
26+ if [[ -v LOG_RANGE ]]; then
27+ if git log --no-merges --pretty=format:"%s" "${LOG_RANGE[@]}" -- | grep -qE "^[^#].{78}"; then
28+ echo -e "Last commit log contains a line with more than 78 characters:\n"
29+ git log --no-merges --pretty=format:"%h: %s" "${LOG_RANGE[@]}" -- | grep -E "^[^:]+: [^#].{78}"
30+ echo
31+ exit 1
32+ else
33+ echo "Commit log looks good."
34+ fi
35+ unset LOG_RANGE
36+ else
37+ echo "Not checking commits on ${{github.event_name}}"
38+ fi