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#!/usr/bin/python3
import sys
import os
import re
import subprocess
from debian_linux.debian import Changelog, VersionLinux
def base_version(ver):
# Assume base version is at least 3.0, thus only 2 components wanted
match = re.match(r'^(\d+\.\d+)', ver)
assert match
return match.group(1)
def add_update(ver, inc):
base = base_version(ver)
if base == ver:
update = 0
else:
update = int(ver[len(base)+1:])
update += inc
if update == 0:
return base
else:
return '{}.{}'.format(base, update)
def next_update(ver):
return add_update(ver, 1)
def print_stable_log(log, cur_ver, new_ver):
major_ver = re.sub(r'^(\d+)\..*', r'\1', cur_ver)
while cur_ver != new_ver:
next_ver = next_update(cur_ver)
print(' https://www.kernel.org/pub/linux/kernel/v{}.x/ChangeLog-{}'
.format(major_ver, next_ver),
file=log)
log.flush() # serialise our output with git's
subprocess.check_call(['git', 'log', '--reverse',
'--pretty= - %s',
'v{}..v{}^'.format(cur_ver, next_ver)],
stdout=log)
cur_ver = next_ver
def main(repo, new_ver):
if os.path.exists(os.path.join(repo, '.git')):
os.environ['GIT_DIR'] = os.path.join(repo, '.git')
else:
os.environ['GIT_DIR'] = repo
changelog = Changelog(version=VersionLinux)
cur_pkg_ver = changelog[0].version
cur_ver = cur_pkg_ver.linux_upstream_full
if base_version(new_ver) != base_version(cur_ver):
print('{} is not on the same stable series as {}'
.format(new_ver, cur_ver),
file=sys.stderr)
sys.exit(2)
new_pkg_ver = new_ver + '-1'
if cur_pkg_ver.linux_revision_experimental:
new_pkg_ver += '~exp1'
# Three possible cases:
# 1. The current version has been released so we need to add a new
# version to the changelog.
# 2. The current version has not been released so we're changing its
# version string.
# (a) There are no stable updates included in the current version,
# so we need to insert an introductory line, the URL(s) and
# git log(s) and a blank line at the top.
# (b) One or more stable updates are already included in the current
# version, so we need to insert the URL(s) and git log(s) after
# them.
changelog_intro = 'New upstream stable update:'
# Case 1
if changelog[0].distribution != 'UNRELEASED':
subprocess.check_call(['dch', '-v', new_pkg_ver, '-D', 'UNRELEASED',
changelog_intro])
with open('debian/changelog', 'r') as old_log:
with open('debian/changelog.new', 'w') as new_log:
line_no = 0
inserted = False
intro_line = ' * {}\n'.format(changelog_intro)
for line in old_log:
line_no += 1
# Case 2
if changelog[0].distribution == 'UNRELEASED' and line_no == 1:
print('{} ({}) UNRELEASED; urgency={}'
.format(changelog[0].source, new_pkg_ver,
changelog[0].urgency),
file=new_log)
continue
if not inserted:
# Case 2(a)
if line_no == 3 and line != intro_line:
new_log.write(intro_line)
print_stable_log(new_log, cur_ver, new_ver)
new_log.write('\n')
inserted = True
# Case 1 or 2(b)
elif line_no > 3 and line == '\n':
print_stable_log(new_log, cur_ver, new_ver)
inserted = True
# Check that we inserted before hitting the end of the
# first version entry
assert not (line.startswith(' -- ') and not inserted)
new_log.write(line)
os.rename('debian/changelog.new', 'debian/changelog')
if __name__ == '__main__':
if len(sys.argv) != 3:
print('''\
Usage: {} REPO VERSION
REPO is the git repository to generate a changelog from
VERSION is the stable version (without leading v)'''.format(sys.argv[0]),
file=sys.stderr)
sys.exit(2)
main(*sys.argv[1:])
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