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.path
import sys
from file_util import *
from patch_util import *
# cannot be loaded as a module
if __name__ != "__main__":
sys.stderr.write('This file cannot be loaded as a module!')
sys.exit()
# 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')
(options, args) = parser.parse_args()
# the patchconfig option is required
if options.patchconfig is None:
parser.print_help(sys.stdout)
sys.exit()
# normalize the patch directory value
patchdir = os.path.dirname(os.path.abspath(options.patchconfig)).replace('\\', '/')
if patchdir[-1] != '/':
patchdir += '/'
# check if the patching should be skipped
if os.path.isfile(patchdir + 'NOPATCH'):
nopatch = True
sys.stdout.write('NOPATCH exists -- files have not been patched.\n')
else:
nopatch = False
# locate the patch configuration file
if not os.path.isfile(options.patchconfig):
sys.stderr.write('File '+options.patchconfig+' does not exist.\n')
sys.exit()
scope = {}
execfile(options.patchconfig, scope)
patches = scope["patches"]
for name in patches.keys():
file = patchdir+'patches/'+name+'.patch'
if not os.path.isfile(file):
sys.stderr.write('Patch file '+file+' does not exist.\n')
else:
sys.stderr.write('Reading patch file '+file+'\n')
dir = patches[name]
patchObj = from_file(file)
patchObj.apply(dir)
# read the current include file, if any
incfile = patchdir + 'patch_state.h'
if nopatch:
incnew = """// This file is generated by the patch tool and should not be edited manually.
#ifndef _PATCH_STATE_H
#define _PATCH_STATE_H
// No patches have been applied to the Chromium/WebKit source base.
#define CEF_PATCHES_APPLIED 0
#endif // _PATCH_STATE_H
"""
else:
incnew = """// This file is generated by the patch tool and should not be edited manually.
#ifndef _PATCH_STATE_H
#define _PATCH_STATE_H
// Patches have been applied to the Chromium/WebKit source base.
#define CEF_PATCHES_APPLIED 1
#endif // _PATCH_STATE_H
"""
inccur = ''
if os.path.isfile(incfile):
inccur = read_file(incfile)
if inccur != incnew:
sys.stdout.write('Writing file '+incfile+'.\n')
write_file(incfile, incnew)