third_party/liblouis/copy_tables.py

   1 #!/usr/bin/env python
   2 # Copyright 2015 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 '''Copies the liblouis braille translation tables to a destination.'''
   7
   8 import liblouis_list_tables
   9 import optparse
  10 import os
  11 import shutil
  12
  13
  14 def LinkOrCopyFiles(sources, dest_dir):
  15   def LinkOrCopyOneFile(src, dst):
  16     if os.path.exists(dst):
  17       os.unlink(dst)
  18     try:
  19       os.link(src, dst)
  20     except:
  21       shutil.copy(src, dst)
  22
  23   if not os.path.exists(dest_dir):
  24     os.makedirs(dest_dir)
  25   for source in sources:
  26     LinkOrCopyOneFile(source, os.path.join(dest_dir, os.path.basename(source)))
  27
  28
  29 def WriteDepfile(depfile, infiles):
  30   stampfile = depfile + '.stamp'
  31   with open(stampfile, 'w'):
  32     os.utime(stampfile, None)
  33   content = '%s: %s' % (stampfile, ' '.join(infiles))
  34   open(depfile, 'w').write(content)
  35
  36
  37
  38 def main():
  39   parser = optparse.OptionParser(description=__doc__)
  40   parser.add_option('-D', '--directory', dest='directories',
  41                      action='append', help='Where to search for table files')
  42   parser.add_option('-e', '--extra_file', dest='extra_files', action='append',
  43                     default=[], help='Extra liblouis table file to process')
  44   parser.add_option('-d', '--dest_dir', action='store', metavar='DIR',
  45                     help=('Destination directory.  Used when translating ' +
  46                           'input paths to output paths and when copying '
  47                           'files.'))
  48   parser.add_option('--depfile', metavar='FILENAME',
  49                     help=('Store .d style dependencies in FILENAME and touch '
  50                           'FILENAME.stamp after copying the files'))
  51   options, args = parser.parse_args()
  52
  53   if len(args) != 1:
  54     parser.error('Expecting exactly one argument')
  55   if not options.directories:
  56     parser.error('At least one --directory option must be specified')
  57   if not options.dest_dir:
  58     parser.error('At least one --dest_dir option must be specified')
  59   files = liblouis_list_tables.GetTableFiles(args[0], options.directories,
  60                                              options.extra_files)
  61   LinkOrCopyFiles(files, options.dest_dir)
  62   if options.depfile:
  63     WriteDepfile(options.depfile, files)
  64
  65
  66 if __name__ == '__main__':
  67   main()