shaka-packager/packager/tools/extract_from_changelog.py

51 lines
1.5 KiB
Python
Executable File

#!/usr/bin/python3
#
# Copyright 2018 Google Inc. All rights reserved.
#
# Use of this source code is governed by a BSD-style
# license that can be found in the LICENSE file or at
# https://developers.google.com/open-source/licenses/bsd
"""This script extracts a version or release notes from the changelog."""
import argparse
import re
import sys
def main():
parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument('--release_notes', action='store_true',
help='Print the latest release notes from the changelog')
parser.add_argument('--version', action='store_true',
help='Print the latest version from the changelog')
args = parser.parse_args()
with open('CHANGELOG.md', 'r', encoding='utf8') as f:
contents = f.read()
# This excludes the header line with the release name and date, to match the
# style of releases done before the automation was introduced.
latest_entry = re.split(r'^(?=## \[)', contents, flags=re.M)[1]
lines = latest_entry.strip().split('\n')
first_line = lines[0]
release_notes = '\n'.join(lines[1:])
match = re.match(r'^## \[(.*)\]', first_line)
if not match:
raise RuntimeError('Unable to parse first line of CHANGELOG.md!')
version = match[1]
if not version.startswith('v'):
version = 'v' + version
if args.version:
print(version)
if args.release_notes:
print(release_notes)
return 0
if __name__ == '__main__':
sys.exit(main())