comparecodecs.py

#!/usr/bin/env python3

""" Compare the output of two codecs.

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

 Licensed to PSF under a Contributor Agreement.

"""
importsys

defcompare_codecs(encoding1, encoding2):

print('Comparing encoding/decoding of %r and %r'% (encoding1, encoding2))
mismatch=0
# Check encoding
foriinrange(sys.maxunicode+1):
u=chr(i)
try:
c1=u.encode(encoding1)
exceptUnicodeErrorasreason:
c1='<undefined>'
try:
c2=u.encode(encoding2)
exceptUnicodeErrorasreason:
c2='<undefined>'
ifc1!=c2:
print(' * encoding mismatch for 0x%04X: %-14r != %r'% \
 (i, c1, c2))
mismatch+=1
# Check decoding
foriinrange(256):
c=bytes([i])
try:
u1=c.decode(encoding1)
exceptUnicodeError:
u1='<undefined>'
try:
u2=c.decode(encoding2)
exceptUnicodeError:
u2='<undefined>'
ifu1!=u2:
print(' * decoding mismatch for 0x%04X: %-14r != %r'% \
 (i, u1, u2))
mismatch+=1
ifmismatch:
print()
print('Found %i mismatches'%mismatch)
else:
print('-> Codecs are identical.')

if__name__=='__main__':
compare_codecs(sys.argv[1], sys.argv[2])