tdesktop/Telegram/build/changelog2appdata.py

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#!/usr/bin/env python3
import re
import datetime
from xml.etree import ElementTree as ET
import argparse
def parse_changelog(changelog_path):
version_re = re.compile(r'([\d.-]+)\s+(\w+)?\s*\((\d{2}.\d{2}\.\d{2})\)')
entry_re = re.compile(r'-\s(.*)')
with open(changelog_path, "r", encoding="utf-8") as f:
changelog_lines = f.read().splitlines()
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releases = []
for l in changelog_lines:
version_match = version_re.match(l)
entry_match = entry_re.match(l)
if version_match is not None:
version, prerelease, date = version_match.groups()
release = (version,
prerelease,
datetime.datetime.strptime(date, '%d.%m.%y').date(),
[])
releases.append(release)
elif entry_match is not None:
release[3].append(entry_match.group(1))
return releases
def get_release_xml(version, prerelease, date, changes):
release = ET.Element("release")
if prerelease is None:
ver_str = version
else:
ver_str = f"{version}~{prerelease}"
release.set("version", ver_str)
release.set("date", date.isoformat())
description = ET.SubElement(release, "description")
changelist = ET.SubElement(description, "ul")
for c in changes:
change = ET.SubElement(changelist, "li")
change.text = c
return release
def get_changelog_xml(changelog, max_items=None):
releases = ET.Element("releases")
if max_items is not None:
changelog = changelog[:max_items]
for rel in changelog:
release = get_release_xml(*rel)
releases.append(release)
return releases
def update_appdata(appdata_path, changelog, max_items=None):
appdata = ET.parse(appdata_path)
root = appdata.getroot()
releases = root.find("releases")
if releases is not None:
root.remove(releases)
root.append(
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get_changelog_xml(changelog, max_items)
)
appdata.write(appdata_path, encoding="utf-8", xml_declaration=True)
def main():
ap = argparse.ArgumentParser("Parse Telegram changelog")
ap.add_argument("-c", "--changelog-path", default="changelog.txt")
ap.add_argument("-a", "--appdata-path", default="lib/xdg/org.telegram.desktop.metainfo.xml")
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ap.add_argument("-n", "--num-releases", type=int, default=None)
args = ap.parse_args()
update_appdata(args.appdata_path,
parse_changelog(args.changelog_path),
max_items=args.num_releases)
if __name__ == "__main__":
main()