1 #!/usr/bin/env python

     2 

     3 """ Compare the output of two codecs.

     4 

     5 (c) Copyright 2005, Marc-Andre Lemburg (mal@lemburg.com).

     6 

     7     Licensed to PSF under a Contributor Agreement.

     8 

     9 """

    10 import sys

    11 

    12 def compare_codecs(encoding1, encoding2):

    13 

    14     print 'Comparing encoding/decoding of   %r and   %r' % (encoding1, encoding2)

    15     mismatch = 0

    16     # Check encoding

    17     for i in range(sys.maxunicode):

    18         u = unichr(i)

    19         try:

    20             c1 = u.encode(encoding1)

    21         except UnicodeError, reason:

    22             c1 = '<undefined>'

    23         try:

    24             c2 = u.encode(encoding2)

    25         except UnicodeError, reason:

    26             c2 = '<undefined>'

    27         if c1 != c2:

    28             print ' * encoding mismatch for 0x%04X: %-14r != %r' % \

    29                   (i, c1, c2)

    30             mismatch += 1

    31     # Check decoding

    32     for i in range(256):

    33         c = chr(i)

    34         try:

    35             u1 = c.decode(encoding1)

    36         except UnicodeError:

    37             u1 = u'<undefined>'

    38         try:

    39             u2 = c.decode(encoding2)

    40         except UnicodeError:

    41             u2 = u'<undefined>'

    42         if u1 != u2:

    43             print ' * decoding mismatch for 0x%04X: %-14r != %r' % \

    44                   (i, u1, u2)

    45             mismatch += 1

    46     if mismatch:

    47         print

    48         print 'Found %i mismatches' % mismatch

    49     else:

    50         print '-> Codecs are identical.'

    51 

    52 if __name__ == '__main__':

    53     compare_codecs(sys.argv[1], sys.argv[2])