tools/data_pack/repack.py

   1 #!/usr/bin/python
   2 # Copyright (c) 2008 The Chromium Authors. All rights reserved.
   3 # Use of this source code is governed by a BSD-style license that can be
   4 # found in the LICENSE file.
   5
   6 """A simple utility function to merge data pack files into a single data pack.
   7 See base/pack_file* for details about the file format.
   8 """
   9
  10 import exceptions
  11 import struct
  12 import sys
  13
  14 import data_pack
  15
  16 def RePack(output_file, input_files):
  17   """Write a new data pack to |output_file| based on a list of filenames
  18   (|input_files|)"""
  19   resources = {}
  20   for filename in input_files:
  21     new_resources = data_pack.ReadDataPack(filename)
  22
  23     # Make sure we have no dups.
  24     duplicate_keys = set(new_resources.keys()) & set(resources.keys())
  25     if len(duplicate_keys) != 0:
  26       raise exceptions.KeyError("Duplicate keys: " + str(list(duplicate_keys)))
  27
  28     resources.update(new_resources)
  29
  30   data_pack.WriteDataPack(resources, output_file)
  31
  32 def main(argv):
  33   if len(argv) < 3:
  34     print ("Usage:\n  %s <output_filename> <input_file1> [input_file2] ... " %
  35            argv[0])
  36     sys.exit(-1)
  37   RePack(argv[1], argv[2:])
  38
  39 if '__main__' == __name__:
  40   main(sys.argv)