[NaCl SDK] Convert python scripts from optparse to argparse.

native_client_sdk/src/doc/doxygen/doxy_cleanup.py

 #!/usr/bin/env python
 # Copyright (c) 2011 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.
 
 '''This utility cleans up the html files as emitted by doxygen so
 that they are suitable for publication on a Google documentation site.
 '''
 
+import argparse
 import glob
-import optparse
 import os
 import re
 import shutil
 import sys
+
 try:
   from BeautifulSoup import BeautifulSoup, Tag
 except (ImportError, NotImplementedError):
   print ("This tool requires the BeautifulSoup package "
          "(see http://www.crummy.com/software/BeautifulSoup/).\n"
          "Make sure that the file BeautifulSoup.py is either in this directory "
          "or is available in your PYTHON_PATH")
   raise
 
 
@@ skipping 114 matching lines @@
     return re.sub(r'(_\d_\d)(?=[": <])', '', html)
 
   def FixAll(self):
     self.FixTableHeadings()
     self.RemoveTopHeadings()
     html = str(self.soup)
     html = self.RemoveVersionNumbers(html)
     return html
 
 
-def main(argv):
+def main(args):
   """Main entry for the doxy_cleanup utility
 
   doxy_cleanup cleans up the html files generated by doxygen.
   """
 
-  parser = optparse.OptionParser(usage='Usage: %prog [options] directory')
-  parser.add_option('-v', '--verbose', help='verbose output.',
-                    action='store_true')
-  options, files = parser.parse_args(argv)
+  parser = argparse.ArgumentParser(description=__doc__)
+  parser.add_argument('-v', '--verbose', help='verbose output.',
+                      action='store_true')
+  parser.add_argument('directory')
 
-  if len(files) != 1:
-    parser.error('Expected one directory')
+  options = parser.parse_args(args)
 
   if options.verbose:
     Trace.verbose = True
 
-  root_dir = files[0]
+  root_dir = options.directory
   html_dir = os.path.join(root_dir, 'html')
 
   # Doxygen puts all files in an 'html' directory.
   # First, move all files from that directory to root_dir.
   for filename in glob.glob(os.path.join(html_dir, '*')):
     Trace('Moving %s -> %s' % (filename, root_dir))
     shutil.move(filename, root_dir)
 
   # Now remove the 'html' directory.
   Trace('Removing %s' % html_dir)
@@ skipping 31 matching lines @@
 
   return 0
 
 if __name__ == '__main__':
   try:
     rtn = main(sys.argv[1:])
   except KeyboardInterrupt:
     sys.stderr.write('%s: interrupted\n' % os.path.basename(__file__))
     rtn = 1
   sys.exit(rtn)