fdkaac/git2changelog.py

45 lines
1.5 KiB
Python
Executable File

#!/usr/bin/env python
# Copyright (C) 2013 nu774
# For conditions of distribution and use, see copyright notice in COPYING
import sys
import re
from subprocess import Popen, PIPE
from itertools import groupby
from collections import namedtuple
GITLOG_FMT = 'commit %H%nauthor %cn <%ae>%ndate %ad%nsubject %s%nref %d%n%n'
GITLOG_CMD = ['git','log','--date=short','--format={0}'.format(GITLOG_FMT)]
Commit = namedtuple('Commit', 'commit author date subject ref')
def parse_gitlog(stream):
re_decode_ref = re.compile(r'(?<=\()([^,)]+)')
re_strip_tag = re.compile(r'^tag: ')
commit = dict()
for line in stream:
fields = line.decode('utf-8').rstrip('\r\n').split(' ', 1)
if len(fields) == 2:
key, value = fields
if key == 'ref':
m = re_decode_ref.search(value)
if m:
value = ' [{0}]'.format(re_strip_tag.sub('', m.group()))
else:
value = ''
commit[key] = value
elif commit:
yield Commit(**commit)
commit = dict()
output=sys.stdout.write
with Popen(GITLOG_CMD, shell=False, stdout=PIPE).stdout as pipe:
commits = parse_gitlog(pipe)
commits_by_date_author = groupby(commits, key=lambda x: (x.date, x.author))
for (date, author), commits in commits_by_date_author:
output('{0} {1}\n\n'.format(date, author))
for c in commits:
output(' * {0}{1}\n\n'.format(c.subject, c.ref))