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#!/usr/bin/python
# Copyright (c) 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.
"""A simple utility function to merge data pack files into a single data pack.
See base/pack_file* for details about the file format.
"""
import exceptions
import struct
import sys
import data_pack
def RePack(output_file, input_files):
"""Write a new data pack to |output_file| based on a list of filenames
(|input_files|)"""
resources = {}
for filename in input_files:
new_resources = data_pack.ReadDataPack(filename)
# Make sure we have no dups.
duplicate_keys = set(new_resources.keys()) & set(resources.keys())
if len(duplicate_keys) != 0:
raise exceptions.KeyError("Duplicate keys: " + str(list(duplicate_keys)))
resources.update(new_resources)
data_pack.WriteDataPack(resources, output_file)
def main(argv):
if len(argv) < 3:
print ("Usage:\n %s <output_filename> <input_file1> [input_file2] ... " %
argv[0])
sys.exit(-1)
RePack(argv[1], argv[2:])
if '__main__' == __name__:
main(sys.argv)
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