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#!/usr/bin/env python
# SPDX-License-Identifier: LGPL-2.0-or-later
#
# -*- mode: python -*-
#
# This python program has been copied from
# https://github.com/GNOME/gnet/blob/master/gen-changelog.py
#
# It has been authored by Edward Hervey, of GStreamer fame. I have
# asked his permission to copy it and re-use it here, as part of the
# Libabigail project. He granted me the permission to distribute the
# program under the terms of the GNU Lesser Public License as
# published by the Free Software Foundaion; either version 2, or (at
# your option) any later version.
#
import sys
import subprocess
import re
# Makes a GNU-Style ChangeLog from a git repository
# Handles git-svn repositories also
# Arguments : same as for git log
release_refs={}
def process_commit(lines, files):
# DATE NAME
# BLANK LINE
# Subject
# BLANK LINE
# ...
# FILES
fileincommit = False
lines = [x.strip() for x in lines if x.strip() and not x.startswith('git-svn-id')]
files = [x.strip() for x in files if x.strip()]
for l in lines:
if l.startswith('* '):
fileincommit = True
break
top_line = lines[0]
subject_line_index = 0 if lines[1].startswith('*') else 1;
first_cl_body_line_index = 0;
for i in range(1, len(lines)):
if lines[i].startswith('*'):
first_cl_body_line_index = i
break;
# Clean up top line of ChangeLog entry:
fields = top_line.split(' ')
# 1. remove the time and timezone stuff in "2008-05-13 07:10:28 +0000 name"
if fields[2].startswith('+') or fields[2].startswith('-'):
del fields[2]
if fields[1][2] == ':' and fields[1][5] == ':':
del fields[1]
# 2. munge at least my @src.gnome.org e-mail address...
if fields[-1] == '<tpm@src.gnome.org>':
fields[-1] = '<tim@centricular.net>'
top_line = ' '.join(fields)
print(top_line.strip())
print()
if subject_line_index > 0:
print('\t%s' % lines[subject_line_index].strip())
if not fileincommit:
for f in files:
print('\t* %s:' % f.strip())
print()
if first_cl_body_line_index > 0:
for l in lines[first_cl_body_line_index:]:
if l.startswith('Signed-off-by:'):
continue
print('\t%s' % l.strip())
print()
def output_commits():
cmd = ['git', 'log', '--pretty=format:--START-COMMIT--%H%n%ai %an <%ae>%n%n%s%n%b%n--END-COMMIT--',
'--date=short', '--name-only']
start_tag = find_start_tag()
if start_tag is None:
cmd.extend(sys.argv[1:])
else:
cmd.extend(["%s..HEAD" % (start_tag)])
p = subprocess.Popen(args=cmd, shell=False,
stdout=subprocess.PIPE,
text=True)
buf = []
files = []
filemode = False
for lin in p.stdout.readlines():
if lin.startswith("--START-COMMIT--"):
if buf != []:
process_commit(buf, files)
hash = lin[16:].strip()
try:
rel = release_refs[hash]
except:
pass
buf = []
files = []
filemode = False
elif lin.startswith("--END-COMMIT--"):
filemode = True
elif filemode == True:
files.append(lin)
else:
buf.append(lin)
if buf != []:
process_commit(buf, files)
def get_rel_tags():
# Populate the release_refs dict with the tags for previous releases
reltagre = re.compile("^([a-z0-9]{40}) refs/tags/libabigail-([0-9]+)[-_.]([0-9]+)[-_.]([0-9]+)")
cmd = ['git', 'show-ref', '--tags', '--dereference']
p = subprocess.Popen(args=cmd, shell=False,
stdout=subprocess.PIPE,
text=True)
for lin in p.stdout:
match = reltagre.search(lin)
if match:
(sha, maj, min, nano) = match.groups()
release_refs[sha] = (maj, min, nano)
def find_start_tag():
starttagre = re.compile("^([a-z0-9]{40}) refs/tags/CHANGELOG_START")
cmd = ['git', 'show-ref', '--tags']
p = subprocess.Popen(args=cmd, shell=False,
stdout=subprocess.PIPE,
text=True)
for lin in p.stdout:
match = starttagre.search(lin)
if match:
return match.group(1)
return None
if __name__ == "__main__":
get_rel_tags()
output_commits()
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