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#!/usr/bin/env python
# Copyright (c) 2011 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Generate a CL to roll webkit to the specified revision number and post
it to Rietveld so that the CL will land automatically if it passes the
commit-queue's checks.
"""
import logging
import optparse
import os
import re
import sys
import find_depot_tools
import scm
import subprocess2
def die_with_error(msg):
print >> sys.stderr, msg
sys.exit(1)
def process_deps(path, new_rev):
"""Update webkit_revision to |new_issue|.
A bit hacky, could it be made better?
"""
content = open(path).read()
old_line = r'(\s+)"webkit_revision": "(\d+)",'
new_line = r'\1"webkit_revision": "%d",' % new_rev
new_content = re.sub(old_line, new_line, content, 1)
if new_content == content:
die_with_error('Failed to update the DEPS file')
open(path, 'w').write(new_content)
def main():
tool_dir = os.path.dirname(os.path.abspath(__file__))
parser = optparse.OptionParser(usage='<new webkit rev>')
parser.add_option('-v', '--verbose', action='count', default=0)
options, args = parser.parse_args()
logging.basicConfig(
level=
[logging.WARNING, logging.INFO, logging.DEBUG][
min(2, options.verbose)])
if len(args) != 1:
parser.error('Need only one arg: new webkit revision to roll to.')
root_dir = os.path.dirname(tool_dir)
os.chdir(root_dir)
new_rev = int(args[0])
msg = 'Roll webkit revision to %s' % new_rev
print msg
# Silence the editor.
os.environ['EDITOR'] = 'true'
old_branch = scm.GIT.GetBranch(root_dir)
if old_branch == 'webkit_roll':
parser.error(
'Please delete the branch webkit_roll and move to a different branch')
subprocess2.check_output(
['git', 'checkout', '-b', 'webkit_roll', 'origin/trunk'])
try:
process_deps(os.path.join(root_dir, 'DEPS'), new_rev)
commit_msg = msg + '\n\nTBR=\n'
subprocess2.check_output(['git', 'commit', '-m', commit_msg, 'DEPS'])
subprocess2.check_call(['git', 'diff', 'origin/trunk'])
subprocess2.check_call(['git', 'cl', 'upload', '--use-commit-queue'])
finally:
subprocess2.check_output(['git', 'checkout', old_branch])
subprocess2.check_output(['git', 'branch', '-D', 'webkit_roll'])
return 0
if __name__ == '__main__':
sys.exit(main())
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