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#!/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.
"""
import sys
def compare_codecs(encoding1, encoding2):
print('Comparing encoding/decoding of %r and %r' % (encoding1, encoding2))
mismatch = 0
# Check encoding
for i in range(sys.maxunicode+1):
u = chr(i)
try:
c1 = u.encode(encoding1)
except UnicodeError as reason:
c1 = '<undefined>'
try:
c2 = u.encode(encoding2)
except UnicodeError as reason:
c2 = '<undefined>'
if c1 != c2:
print(' * encoding mismatch for 0x%04X: %-14r != %r' % \
(i, c1, c2))
mismatch += 1
# Check decoding
for i in range(256):
c = bytes([i])
try:
u1 = c.decode(encoding1)
except UnicodeError:
u1 = '<undefined>'
try:
u2 = c.decode(encoding2)
except UnicodeError:
u2 = '<undefined>'
if u1 != u2:
print(' * decoding mismatch for 0x%04X: %-14r != %r' % \
(i, u1, u2))
mismatch += 1
if mismatch:
print()
print('Found %i mismatches' % mismatch)
else:
print('-> Codecs are identical.')
if __name__ == '__main__':
compare_codecs(sys.argv[1], sys.argv[2])
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