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#!/usr/bin/env python3
from __future__ import annotations
from typing import List
from typing import Tuple
import subprocess
import sys
ALLOWED_TAGS = [
'ci',
'cfix',
'new',
'cq',
'feat',
'fix',
'perf',
'refactor',
'chore',
'change',
'release',
'other',
'imprv',
'revert',
]
def parse_args() -> Tuple[str, str, str]:
ref_name = sys.argv[1]
old_ref = sys.argv[2]
new_ref = sys.argv[3]
return ref_name, old_ref, new_ref
def get_commit_subject(sha: str) -> str:
data = subprocess.check_output(
['git', 'log', '-1', '--pretty=format:%s', sha])
return data.decode()
def get_commit_shas(start_ref: str, end_ref: str) -> List[str]:
arg = f'{start_ref}..{end_ref}'
data = subprocess.check_output(['git', 'rev-list', arg])
text = data.decode()
text = text.strip()
if not text:
# Can happen if commits are deleted after force push
return []
return text.split('\n')
def enforce_message_rules(subject: str) -> None:
try:
tag, subject = subject.split(': ', maxsplit=1)
except ValueError:
print('Unknown commit message tag:', subject)
sys.exit(1)
if tag not in ALLOWED_TAGS:
print('Unknown commit message tag:', tag)
sys.exit(1)
if tag == 'release':
if not subject[0].isdigit():
print('Release commits should be of the form "release: X.X.X"')
sys.exit(1)
return
if not subject[0].isupper():
print('First letter after tag must be uppercase')
sys.exit(1)
def main(args: Tuple[str, str, str]) -> None:
ref_name, old_ref, new_ref = args
print('UPDATE', ref_name, old_ref, new_ref)
if ref_name != 'refs/heads/master':
# We enforce only for master branch
return
shas = get_commit_shas(old_ref, new_ref)
for sha in shas:
print('Check', sha)
subject = get_commit_subject(sha)
enforce_message_rules(subject)
if __name__ == "__main__":
args = parse_args()
main(args)
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