chrome/browser/resources/chromeos/chromevox/tools/generate_test_messages.py

   1 #!/usr/bin/env python
   2
   3 # Copyright 2014 The Chromium Authors. All rights reserved.
   4 # Use of this source code is governed by a BSD-style license that can be
   5 # found in the LICENSE file.
   6
   7 '''Generates test_messages.js from an extension message json file.'''
   8
   9 import optparse
  10 import sys
  11
  12 def Die(message):
  13   '''Prints an error message and exit the program.'''
  14   print >>sys.stderr, message
  15   sys.exit(1)
  16
  17
  18 # Tempalte for the test_messages.js.
  19 _JS_TEMPLATE = '''// GENERATED FROM %(in_file)s
  20
  21 goog.provide('cvox.TestMessages');
  22
  23 cvox.TestMessages = %(json)s;
  24 '''
  25
  26
  27 def main():
  28   parser = optparse.OptionParser(description=__doc__)
  29   parser.add_option('-o', '--output_file', action='store',
  30                     metavar='SPEC',
  31                     help=('Where to output the generated deps file.'))
  32   options, args = parser.parse_args()
  33   if options.output_file is None:
  34     Die('Output file not specified')
  35   if len(args) != 1:
  36     Die('Exactly one input file must be specified')
  37   in_file_name = args[0]
  38   with open(in_file_name) as in_file:
  39     json = in_file.read().strip()
  40   with open(options.output_file, 'w') as out_file:
  41     out_file.write(_JS_TEMPLATE % {'in_file': in_file_name, 'json': json})
  42
  43
  44 if __name__ == '__main__':
  45   main()