Tools/unicode/listcodecs.py

   1 """ List all available codec modules.
   2
   3 (c) Copyright 2005, Marc-Andre Lemburg (mal@lemburg.com).
   4
   5     Licensed to PSF under a Contributor Agreement.
   6
   7 """
   8
   9 import os, codecs, encodings
  10
  11 _debug = 0
  12
  13 def listcodecs(dir):
  14     names = []
  15     for filename in os.listdir(dir):
  16         if filename[-3:] != '.py':
  17             continue
  18         name = filename[:-3]
  19         # Check whether we've found a true codec
  20         try:
  21             codecs.lookup(name)
  22         except LookupError:
  23             # Codec not found
  24             continue
  25         except Exception, reason:
  26             # Probably an error from importing the codec; still it's
  27             # a valid code name
  28             if _debug:
  29                 print '* problem importing codec %r: %s' % \
  30                       (name, reason)
  31         names.append(name)
  32     return names
  33
  34
  35 if __name__ == '__main__':
  36     names = listcodecs(encodings.__path__[0])
  37     names.sort()
  38     print 'all_codecs = ['
  39     for name in names:
  40         print '    %r,' % name
  41     print ']'