Port chromevox build to GN.

third_party/liblouis/liblouis_list_tables.py

 #!/usr/bin/env python
 # Copyright 2013 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.
 
 import os
 import re
 import sys
 
 import json
@@ skipping 41 matching lines @@
 
 def ProcessFile(output_set, filename, directories):
   fullname = FindFile(filename, directories)
   if fullname in output_set:
     return
   output_set.add(fullname)
   for include_file in GetIncludeFiles(fullname):
     ProcessFile(output_set, include_file, directories)
 
 
+def GetTableFiles(tables_file, directories, extra_files):
+  tables = LoadTablesFile(tables_file)
+  output_set = set()
+  for table in tables:
+    for name in table['fileNames'].split(','):
+      ProcessFile(output_set, name, directories)
+  for name in extra_files:
+    ProcessFile(output_set, name, directories)
+  return output_set
+
+
 def DoMain(argv):
   "Entry point for gyp's pymod_do_main command."
   parser = optparse.OptionParser()
   # Give a clearer error message when this is used as a module.
   parser.prog = 'liblouis_list_tables'
   parser.set_usage('usage: %prog [options] listfile')
   parser.add_option('-D', '--directory', dest='directories',
                      action='append', help='Where to search for table files')
   parser.add_option('-e', '--extra_file', dest='extra_files', action='append',
                     default=[], help='Extra liblouis table file to process')
   (options, args) = parser.parse_args(argv)
 
   if len(args) != 1:
     parser.error('Expecting exactly one argument')
   if not options.directories:
     parser.error('At least one --directory option must be specified')
-
-  tables = LoadTablesFile(args[0])
-  output_set = set()
-  for table in tables:
-    for name in table['fileNames'].split(','):
-      ProcessFile(output_set, name, options.directories)
-  for name in options.extra_files:
-    ProcessFile(output_set, name, options.directories)
-  return '\n'.join(output_set)
+  files = GetTableFiles(args[0], options.directories, options.extra_files)
+  return '\n'.join(files)
 
 
 def main(argv):
   print DoMain(argv[1:])
 
 
 if __name__ == '__main__':
   try:
     sys.exit(main(sys.argv))
   except KeyboardInterrupt:
     Error('interrupted')