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Patch #1443155: Add the incremental codecs support for CJK codecs.

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(reviewed by Walter Dörwald)
This commit is contained in:
Hye-Shik Chang 2006-03-26 02:34:59 +00:00
parent a531e5b84c
commit e2ac4abd01
31 changed files with 1624 additions and 822 deletions
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127
Lib/test/test_multibytecodec.py
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@ -9,11 +9,106 @@
from test import test_multibytecodec_support
import unittest, StringIO, codecs
class Test_MultibyteCodec(unittest.TestCase):
def test_nullcoding(self):
self.assertEqual(''.decode('gb18030'), u'')
self.assertEqual(unicode('', 'gb18030'), u'')
self.assertEqual(u''.encode('gb18030'), '')
def test_str_decode(self):
self.assertEqual('abcd'.encode('gb18030'), 'abcd')
class Test_IncrementalEncoder(unittest.TestCase):
def test_stateless(self):
# cp949 encoder isn't stateful at all.
encoder = codecs.getincrementalencoder('cp949')()
self.assertEqual(encoder.encode(u'\ud30c\uc774\uc36c \ub9c8\uc744'),
'\xc6\xc4\xc0\xcc\xbd\xe3 \xb8\xb6\xc0\xbb')
self.assertEqual(encoder.reset(), None)
self.assertEqual(encoder.encode(u'\u2606\u223c\u2606', True),
'\xa1\xd9\xa1\xad\xa1\xd9')
self.assertEqual(encoder.reset(), None)
self.assertEqual(encoder.encode(u'', True), '')
self.assertEqual(encoder.encode(u'', False), '')
self.assertEqual(encoder.reset(), None)
def test_stateful(self):
# jisx0213 encoder is stateful for a few codepoints. eg)
# U+00E6 => A9DC
# U+00E6 U+0300 => ABC4
# U+0300 => ABDC
encoder = codecs.getincrementalencoder('jisx0213')()
self.assertEqual(encoder.encode(u'\u00e6\u0300'), '\xab\xc4')
self.assertEqual(encoder.encode(u'\u00e6'), '')
self.assertEqual(encoder.encode(u'\u0300'), '\xab\xc4')
self.assertEqual(encoder.encode(u'\u00e6', True), '\xa9\xdc')
self.assertEqual(encoder.reset(), None)
self.assertEqual(encoder.encode(u'\u0300'), '\xab\xdc')
self.assertEqual(encoder.encode(u'\u00e6'), '')
self.assertEqual(encoder.encode('', True), '\xa9\xdc')
self.assertEqual(encoder.encode('', True), '')
def test_stateful_keep_buffer(self):
encoder = codecs.getincrementalencoder('jisx0213')()
self.assertEqual(encoder.encode(u'\u00e6'), '')
self.assertRaises(UnicodeEncodeError, encoder.encode, u'\u0123')
self.assertEqual(encoder.encode(u'\u0300\u00e6'), '\xab\xc4')
self.assertRaises(UnicodeEncodeError, encoder.encode, u'\u0123')
self.assertEqual(encoder.reset(), None)
self.assertEqual(encoder.encode(u'\u0300'), '\xab\xdc')
self.assertEqual(encoder.encode(u'\u00e6'), '')
self.assertRaises(UnicodeEncodeError, encoder.encode, u'\u0123')
self.assertEqual(encoder.encode(u'', True), '\xa9\xdc')
class Test_IncrementalDecoder(unittest.TestCase):
def test_dbcs(self):
# cp949 decoder is simple with only 1 or 2 bytes sequences.
decoder = codecs.getincrementaldecoder('cp949')()
self.assertEqual(decoder.decode('\xc6\xc4\xc0\xcc\xbd'),
u'\ud30c\uc774')
self.assertEqual(decoder.decode('\xe3 \xb8\xb6\xc0\xbb'),
u'\uc36c \ub9c8\uc744')
self.assertEqual(decoder.decode(''), u'')
def test_dbcs_keep_buffer(self):
decoder = codecs.getincrementaldecoder('cp949')()
self.assertEqual(decoder.decode('\xc6\xc4\xc0'), u'\ud30c')
self.assertRaises(UnicodeDecodeError, decoder.decode, '', True)
self.assertEqual(decoder.decode('\xcc'), u'\uc774')
self.assertEqual(decoder.decode('\xc6\xc4\xc0'), u'\ud30c')
self.assertRaises(UnicodeDecodeError, decoder.decode, '\xcc\xbd', True)
self.assertEqual(decoder.decode('\xcc'), u'\uc774')
def test_iso2022(self):
decoder = codecs.getincrementaldecoder('iso2022-jp')()
ESC = '\x1b'
self.assertEqual(decoder.decode(ESC + '('), u'')
self.assertEqual(decoder.decode('B', True), u'')
self.assertEqual(decoder.decode(ESC + '$'), u'')
self.assertEqual(decoder.decode('B@$'), u'\u4e16')
self.assertEqual(decoder.decode('@$@'), u'\u4e16')
self.assertEqual(decoder.decode('$', True), u'\u4e16')
self.assertEqual(decoder.reset(), None)
self.assertEqual(decoder.decode('@$'), u'@$')
self.assertEqual(decoder.decode(ESC + '$'), u'')
self.assertRaises(UnicodeDecodeError, decoder.decode, '', True)
self.assertEqual(decoder.decode('B@$'), u'\u4e16')
class Test_StreamWriter(unittest.TestCase):
if len(u'\U00012345') == 2: # UCS2
def test_gb18030(self):
s= StringIO.StringIO()
c = codecs.lookup('gb18030')[3](s)
c = codecs.getwriter('gb18030')(s)
c.write(u'123')
self.assertEqual(s.getvalue(), '123')
c.write(u'\U00012345')
@ -30,15 +125,16 @@ def test_gb18030(self):
self.assertEqual(s.getvalue(),
'123\x907\x959\x907\x959\x907\x959\x827\xcf5\x810\x851')
# standard utf-8 codecs has broken StreamReader
if test_multibytecodec_support.__cjkcodecs__:
def test_utf_8(self):
s= StringIO.StringIO()
c = codecs.lookup('utf-8')[3](s)
c.write(u'123')
self.assertEqual(s.getvalue(), '123')
c.write(u'\U00012345')
self.assertEqual(s.getvalue(), '123\xf0\x92\x8d\x85')
def test_utf_8(self):
s= StringIO.StringIO()
c = codecs.getwriter('utf-8')(s)
c.write(u'123')
self.assertEqual(s.getvalue(), '123')
c.write(u'\U00012345')
self.assertEqual(s.getvalue(), '123\xf0\x92\x8d\x85')
# Python utf-8 codec can't buffer surrogate pairs yet.
if 0:
c.write(u'\U00012345'[0])
self.assertEqual(s.getvalue(), '123\xf0\x92\x8d\x85')
c.write(u'\U00012345'[1] + u'\U00012345' + u'\uac00\u00ac')
@ -61,14 +157,6 @@ def test_utf_8(self):
else: # UCS4
pass
def test_nullcoding(self):
self.assertEqual(''.decode('gb18030'), u'')
self.assertEqual(unicode('', 'gb18030'), u'')
self.assertEqual(u''.encode('gb18030'), '')
def test_str_decode(self):
self.assertEqual('abcd'.encode('gb18030'), 'abcd')
def test_streamwriter_strwrite(self):
s = StringIO.StringIO()
wr = codecs.getwriter('gb18030')(s)
@ -83,6 +171,9 @@ def test_g2(self):
def test_main():
suite = unittest.TestSuite()
suite.addTest(unittest.makeSuite(Test_MultibyteCodec))
suite.addTest(unittest.makeSuite(Test_IncrementalEncoder))
suite.addTest(unittest.makeSuite(Test_IncrementalDecoder))
suite.addTest(unittest.makeSuite(Test_StreamWriter))
suite.addTest(unittest.makeSuite(Test_ISO2022))
test_support.run_suite(suite)