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#!/usr/bin/env python3
# gentoo-infra: infra/githooks.git:local/git.gentoo.org/pre-receive.gentoo-news
# vim:fileencoding=utf-8 et st=4 sts=4
# Copyright 2012-2019 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
# $Id$
# Author: Michał Górny <mgorny@gentoo.org>
# Author: Robin H. Johnson <robbat2@gentoo.org> (hook fixups)
# Based on work of: Ulrich Müller <ulm@gentoo.org>
import datetime
import os
import re
import subprocess
import sys
import fileinput
PATH_REGEX = re.compile(r'''
(?P<year> \d{4}) - (?P<month> \d{2}) - (?P<day> \d{2})
- (?P<name> [a-z0-9+_-]+) /
(?P=year) - (?P=month) - (?P=day) - (?P=name)
. (?P<lang> [a-z]{2}) .txt (?: .asc )?
''', re.VERBOSE)
# special git commit id
ZEROS = '0000000000000000000000000000000000000000'
def main(prog, *argv):
if 'GIT_DIR' not in os.environ:
return '%s: GIT_DIR unset' % (prog, )
results = []
for line in fileinput.input():
if isinstance(line, bytes):
line = line.decode()
# <old-value> SP <new-value> SP <ref-name> LF
(oldrev, newrev, refname) = line.split()
results += [validate(oldrev, newrev, refname)]
results = [x for x in results if x != 0]
if len(results) == 0:
return 0
print('%s: errors in commits' % (prog, ))
print(''.join([x+"\n" for x in results]))
return 1
def validate(oldrev, newrev, refname):
# Deletion of a branch means no work to do anyway.
# And git-diff will fail
if newrev == ZEROS:
return 0
# New branch or tag, find where it forked from master
if oldrev == ZEROS:
proc = subprocess.Popen( \
['git', 'merge-base', \
'refs/heads/master', newrev],
stdout=subprocess.PIPE)
merge_base = proc.communicate()[0].rstrip()
if isinstance(merge_base, bytes):
merge_base = merge_base.decode()
if len(merge_base) > 0:
oldrev = merge_base
proc = subprocess.Popen( \
['git', 'diff', \
'--name-only', '--diff-filter=A', \
'%s..%s' % (oldrev, newrev)],
stdout=subprocess.PIPE)
added = proc.communicate()[0]
if isinstance(added, bytes):
added = added.decode()
added = added.rstrip().split('\n')
for filename in [f for f in added if len(f) > 0]:
# GLEP 42: name should take the form of:
# yyyy-mm-dd-<name>/yyyy-mm-dd-<name>.<lang>.txt[.asc]
# where <name>: [a-z0-9+_-]+, <lang>: [a-z][a-z]
match = PATH_REGEX.match(filename)
if not match:
return 'Path syntax invalid: %s' % filename
date = [int(match.group(x)) for x in ('year', 'month', 'day')]
try:
datetime.date(*date)
except ValueError:
return 'Date invalid: %s' % '-'.join(date)
# return nothing if good
return 0
if __name__ == '__main__':
_args = sys.argv[1:]
sys.exit(main(sys.argv[0], *_args))
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