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#!/usr/bin/python
# Copyright (c) 2006-2008 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.
'''Reads the Webkit Version.xcconfig file looking for MAJOR_VERSION and
MINOR_VERSION, emitting them into a webkit_version.h header file as
WEBKIT_MAJOR_VERSION and WEBKIT_MINOR_VERSION macros.
'''
import os
import re
import sys
def ReadVersionFile(fname):
'''Reads the Webkit Version.xcconfig file looking for MAJOR_VERSION and
MINOR_VERSION. This function doesn't attempt to support the full syntax
of xcconfig files.'''
re_major = re.compile('MAJOR_VERSION\s*=\s*(\d+).*')
re_minor = re.compile('MINOR_VERSION\s*=\s*(\d+).*')
major = -1
minor = -1
f = open(fname, 'rb')
line = "not empty"
while line and not (major >= 0 and minor >= 0):
line = f.readline()
if major == -1:
match = re_major.match(line)
if match:
major = int(match.group(1))
continue
if minor == -1:
match = re_minor.match(line)
if match:
minor = int(match.group(1))
continue
assert(major >= 0 and minor >= 0)
return (major, minor)
def EmitVersionHeader(version_file, output_dir):
'''Given webkit's version file, emit a header file that we can use from
within webkit_glue.cc.
'''
(major, minor) = ReadVersionFile(version_file)
fname = os.path.join(output_dir, "webkit_version.h")
f = open(fname, 'wb')
template = """// webkit_version.h
// generated from %s
#define WEBKIT_VERSION_MAJOR %d
#define WEBKIT_VERSION_MINOR %d
""" % (version_file, major, minor)
f.write(template)
f.close()
def main():
EmitVersionHeader(sys.argv[1], sys.argv[2])
if __name__ == "__main__":
main()
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