cef/tools/patcher.py

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# Copyright (c) 2009 The Chromium Embedded Framework Authors. All rights
# reserved. Use of this source code is governed by a BSD-style license that
# can be found in the LICENSE file.
import pickle
from optparse import OptionParser
import os
import sys
from file_util import *
from patch_util import *
# Cannot be loaded as a module.
if __name__ != "__main__":
sys.stdout.write('This file cannot be loaded as a module!')
sys.exit()
def normalize_dir(dir):
''' Normalize the directory value. '''
dir = dir.replace('\\', '/')
if dir[-1] != '/':
dir += '/'
return dir
def patch_file(patch_file, patch_dir):
''' Apply a single patch file in a single directory. '''
if not os.path.isfile(patch_file):
raise Exception('Patch file %s does not exist.' % patch_file)
sys.stdout.write('Reading patch file %s\n' % patch_file)
patchObj = from_file(patch_file)
patchObj.apply(normalize_dir(patch_dir))
def patch_config(config_file):
''' Apply patch files based on a configuration file. '''
# Normalize the patch directory value.
patchdir = normalize_dir(os.path.dirname(os.path.abspath(config_file)))
if not os.path.isfile(config_file):
raise Exception('Patch config file %s does not exist.' % config_file)
# Parse the configuration file.
scope = {}
execfile(config_file, scope)
patches = scope["patches"]
for patch in patches:
file = patchdir+'patches/'+patch['name']+'.patch'
dopatch = True
if 'condition' in patch:
# Check that the environment variable is set.
if patch['condition'] not in os.environ:
sys.stdout.write('Skipping patch file %s\n' % file)
dopatch = False
if dopatch:
patch_file(file, patch['path'])
if 'note' in patch:
separator = '-' * 79 + '\n'
sys.stdout.write(separator)
sys.stdout.write('NOTE: %s\n' % patch['note'])
sys.stdout.write(separator)
# Parse command-line options.
disc = """
This utility applies patch files.
"""
parser = OptionParser(description=disc)
parser.add_option('--patch-config', dest='patchconfig', metavar='DIR',
help='patch configuration file')
parser.add_option('--patch-file', dest='patchfile', metavar='FILE',
help='patch source file')
parser.add_option('--patch-dir', dest='patchdir', metavar='DIR',
help='patch target directory')
(options, args) = parser.parse_args()
if not options.patchconfig is None:
patch_config(options.patchconfig)
elif not options.patchfile is None and not options.patchdir is None:
patch_file(options.patchfile, options.patchdir)
else:
parser.print_help(sys.stdout)
sys.exit()