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2c7fd46e11
When using customized decode error handlers, it is possible for builtin decoders to write out-of-bounds and then crash.
1125 lines
43 KiB
Python
1125 lines
43 KiB
Python
import codecs
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import html.entities
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import sys
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import test.support
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import unicodedata
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import unittest
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class PosReturn:
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# this can be used for configurable callbacks
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def __init__(self):
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self.pos = 0
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def handle(self, exc):
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oldpos = self.pos
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realpos = oldpos
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if realpos<0:
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realpos = len(exc.object) + realpos
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# if we don't advance this time, terminate on the next call
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# otherwise we'd get an endless loop
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if realpos <= exc.start:
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self.pos = len(exc.object)
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return ("<?>", oldpos)
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# A UnicodeEncodeError object with a bad start attribute
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class BadStartUnicodeEncodeError(UnicodeEncodeError):
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def __init__(self):
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UnicodeEncodeError.__init__(self, "ascii", "", 0, 1, "bad")
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self.start = []
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# A UnicodeEncodeError object with a bad object attribute
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class BadObjectUnicodeEncodeError(UnicodeEncodeError):
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def __init__(self):
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UnicodeEncodeError.__init__(self, "ascii", "", 0, 1, "bad")
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self.object = []
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# A UnicodeDecodeError object without an end attribute
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class NoEndUnicodeDecodeError(UnicodeDecodeError):
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def __init__(self):
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UnicodeDecodeError.__init__(self, "ascii", bytearray(b""), 0, 1, "bad")
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del self.end
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# A UnicodeDecodeError object with a bad object attribute
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class BadObjectUnicodeDecodeError(UnicodeDecodeError):
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def __init__(self):
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UnicodeDecodeError.__init__(self, "ascii", bytearray(b""), 0, 1, "bad")
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self.object = []
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# A UnicodeTranslateError object without a start attribute
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class NoStartUnicodeTranslateError(UnicodeTranslateError):
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def __init__(self):
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UnicodeTranslateError.__init__(self, "", 0, 1, "bad")
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del self.start
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# A UnicodeTranslateError object without an end attribute
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class NoEndUnicodeTranslateError(UnicodeTranslateError):
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def __init__(self):
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UnicodeTranslateError.__init__(self, "", 0, 1, "bad")
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del self.end
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# A UnicodeTranslateError object without an object attribute
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class NoObjectUnicodeTranslateError(UnicodeTranslateError):
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def __init__(self):
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UnicodeTranslateError.__init__(self, "", 0, 1, "bad")
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del self.object
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class CodecCallbackTest(unittest.TestCase):
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def test_xmlcharrefreplace(self):
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# replace unencodable characters which numeric character entities.
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# For ascii, latin-1 and charmaps this is completely implemented
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# in C and should be reasonably fast.
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s = "\u30b9\u30d1\u30e2 \xe4nd eggs"
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self.assertEqual(
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s.encode("ascii", "xmlcharrefreplace"),
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b"スパモ änd eggs"
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)
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self.assertEqual(
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s.encode("latin-1", "xmlcharrefreplace"),
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b"スパモ \xe4nd eggs"
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)
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def test_xmlcharnamereplace(self):
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# This time use a named character entity for unencodable
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# characters, if one is available.
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def xmlcharnamereplace(exc):
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if not isinstance(exc, UnicodeEncodeError):
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raise TypeError("don't know how to handle %r" % exc)
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l = []
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for c in exc.object[exc.start:exc.end]:
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try:
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l.append("&%s;" % html.entities.codepoint2name[ord(c)])
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except KeyError:
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l.append("&#%d;" % ord(c))
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return ("".join(l), exc.end)
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codecs.register_error(
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"test.xmlcharnamereplace", xmlcharnamereplace)
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sin = "\xab\u211c\xbb = \u2329\u1234\u20ac\u232a"
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sout = b"«ℜ» = ⟨ሴ€⟩"
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self.assertEqual(sin.encode("ascii", "test.xmlcharnamereplace"), sout)
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sout = b"\xabℜ\xbb = ⟨ሴ€⟩"
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self.assertEqual(sin.encode("latin-1", "test.xmlcharnamereplace"), sout)
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sout = b"\xabℜ\xbb = ⟨ሴ\xa4⟩"
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self.assertEqual(sin.encode("iso-8859-15", "test.xmlcharnamereplace"), sout)
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def test_uninamereplace(self):
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# We're using the names from the unicode database this time,
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# and we're doing "syntax highlighting" here, i.e. we include
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# the replaced text in ANSI escape sequences. For this it is
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# useful that the error handler is not called for every single
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# unencodable character, but for a complete sequence of
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# unencodable characters, otherwise we would output many
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# unnecessary escape sequences.
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def uninamereplace(exc):
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if not isinstance(exc, UnicodeEncodeError):
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raise TypeError("don't know how to handle %r" % exc)
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l = []
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for c in exc.object[exc.start:exc.end]:
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l.append(unicodedata.name(c, "0x%x" % ord(c)))
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return ("\033[1m%s\033[0m" % ", ".join(l), exc.end)
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codecs.register_error(
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"test.uninamereplace", uninamereplace)
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sin = "\xac\u1234\u20ac\u8000"
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sout = b"\033[1mNOT SIGN, ETHIOPIC SYLLABLE SEE, EURO SIGN, CJK UNIFIED IDEOGRAPH-8000\033[0m"
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self.assertEqual(sin.encode("ascii", "test.uninamereplace"), sout)
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sout = b"\xac\033[1mETHIOPIC SYLLABLE SEE, EURO SIGN, CJK UNIFIED IDEOGRAPH-8000\033[0m"
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self.assertEqual(sin.encode("latin-1", "test.uninamereplace"), sout)
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sout = b"\xac\033[1mETHIOPIC SYLLABLE SEE\033[0m\xa4\033[1mCJK UNIFIED IDEOGRAPH-8000\033[0m"
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self.assertEqual(sin.encode("iso-8859-15", "test.uninamereplace"), sout)
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def test_backslashescape(self):
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# Does the same as the "unicode-escape" encoding, but with different
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# base encodings.
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sin = "a\xac\u1234\u20ac\u8000\U0010ffff"
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sout = b"a\\xac\\u1234\\u20ac\\u8000\\U0010ffff"
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self.assertEqual(sin.encode("ascii", "backslashreplace"), sout)
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sout = b"a\xac\\u1234\\u20ac\\u8000\\U0010ffff"
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self.assertEqual(sin.encode("latin-1", "backslashreplace"), sout)
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sout = b"a\xac\\u1234\xa4\\u8000\\U0010ffff"
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self.assertEqual(sin.encode("iso-8859-15", "backslashreplace"), sout)
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def test_nameescape(self):
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# Does the same as backslashescape, but prefers ``\N{...}`` escape
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# sequences.
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sin = "a\xac\u1234\u20ac\u8000\U0010ffff"
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sout = (b'a\\N{NOT SIGN}\\N{ETHIOPIC SYLLABLE SEE}\\N{EURO SIGN}'
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b'\\N{CJK UNIFIED IDEOGRAPH-8000}\\U0010ffff')
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self.assertEqual(sin.encode("ascii", "namereplace"), sout)
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sout = (b'a\xac\\N{ETHIOPIC SYLLABLE SEE}\\N{EURO SIGN}'
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b'\\N{CJK UNIFIED IDEOGRAPH-8000}\\U0010ffff')
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self.assertEqual(sin.encode("latin-1", "namereplace"), sout)
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sout = (b'a\xac\\N{ETHIOPIC SYLLABLE SEE}\xa4'
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b'\\N{CJK UNIFIED IDEOGRAPH-8000}\\U0010ffff')
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self.assertEqual(sin.encode("iso-8859-15", "namereplace"), sout)
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def test_decoding_callbacks(self):
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# This is a test for a decoding callback handler
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# that allows the decoding of the invalid sequence
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# "\xc0\x80" and returns "\x00" instead of raising an error.
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# All other illegal sequences will be handled strictly.
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def relaxedutf8(exc):
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if not isinstance(exc, UnicodeDecodeError):
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raise TypeError("don't know how to handle %r" % exc)
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if exc.object[exc.start:exc.start+2] == b"\xc0\x80":
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return ("\x00", exc.start+2) # retry after two bytes
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else:
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raise exc
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codecs.register_error("test.relaxedutf8", relaxedutf8)
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# all the "\xc0\x80" will be decoded to "\x00"
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sin = b"a\x00b\xc0\x80c\xc3\xbc\xc0\x80\xc0\x80"
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sout = "a\x00b\x00c\xfc\x00\x00"
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self.assertEqual(sin.decode("utf-8", "test.relaxedutf8"), sout)
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# "\xc0\x81" is not valid and a UnicodeDecodeError will be raised
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sin = b"\xc0\x80\xc0\x81"
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self.assertRaises(UnicodeDecodeError, sin.decode,
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"utf-8", "test.relaxedutf8")
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def test_charmapencode(self):
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# For charmap encodings the replacement string will be
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# mapped through the encoding again. This means, that
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# to be able to use e.g. the "replace" handler, the
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# charmap has to have a mapping for "?".
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charmap = dict((ord(c), bytes(2*c.upper(), 'ascii')) for c in "abcdefgh")
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sin = "abc"
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sout = b"AABBCC"
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self.assertEqual(codecs.charmap_encode(sin, "strict", charmap)[0], sout)
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sin = "abcA"
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self.assertRaises(UnicodeError, codecs.charmap_encode, sin, "strict", charmap)
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charmap[ord("?")] = b"XYZ"
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sin = "abcDEF"
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sout = b"AABBCCXYZXYZXYZ"
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self.assertEqual(codecs.charmap_encode(sin, "replace", charmap)[0], sout)
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charmap[ord("?")] = "XYZ" # wrong type in mapping
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self.assertRaises(TypeError, codecs.charmap_encode, sin, "replace", charmap)
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def test_decodeunicodeinternal(self):
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with test.support.check_warnings(('unicode_internal codec has been '
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'deprecated', DeprecationWarning)):
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self.assertRaises(
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UnicodeDecodeError,
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b"\x00\x00\x00\x00\x00".decode,
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"unicode-internal",
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)
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if len('\0'.encode('unicode-internal')) == 4:
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def handler_unicodeinternal(exc):
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if not isinstance(exc, UnicodeDecodeError):
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raise TypeError("don't know how to handle %r" % exc)
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return ("\x01", 1)
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self.assertEqual(
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b"\x00\x00\x00\x00\x00".decode("unicode-internal", "ignore"),
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"\u0000"
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)
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self.assertEqual(
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b"\x00\x00\x00\x00\x00".decode("unicode-internal", "replace"),
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"\u0000\ufffd"
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)
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self.assertEqual(
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b"\x00\x00\x00\x00\x00".decode("unicode-internal", "backslashreplace"),
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"\u0000\\x00"
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)
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codecs.register_error("test.hui", handler_unicodeinternal)
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self.assertEqual(
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b"\x00\x00\x00\x00\x00".decode("unicode-internal", "test.hui"),
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"\u0000\u0001\u0000"
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)
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def test_callbacks(self):
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def handler1(exc):
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r = range(exc.start, exc.end)
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if isinstance(exc, UnicodeEncodeError):
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l = ["<%d>" % ord(exc.object[pos]) for pos in r]
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elif isinstance(exc, UnicodeDecodeError):
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l = ["<%d>" % exc.object[pos] for pos in r]
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else:
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raise TypeError("don't know how to handle %r" % exc)
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return ("[%s]" % "".join(l), exc.end)
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codecs.register_error("test.handler1", handler1)
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def handler2(exc):
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if not isinstance(exc, UnicodeDecodeError):
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raise TypeError("don't know how to handle %r" % exc)
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l = ["<%d>" % exc.object[pos] for pos in range(exc.start, exc.end)]
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return ("[%s]" % "".join(l), exc.end+1) # skip one character
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codecs.register_error("test.handler2", handler2)
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s = b"\x00\x81\x7f\x80\xff"
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self.assertEqual(
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s.decode("ascii", "test.handler1"),
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"\x00[<129>]\x7f[<128>][<255>]"
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)
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self.assertEqual(
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s.decode("ascii", "test.handler2"),
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"\x00[<129>][<128>]"
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)
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self.assertEqual(
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b"\\u3042\\u3xxx".decode("unicode-escape", "test.handler1"),
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"\u3042[<92><117><51>]xxx"
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)
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self.assertEqual(
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b"\\u3042\\u3xx".decode("unicode-escape", "test.handler1"),
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"\u3042[<92><117><51>]xx"
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)
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self.assertEqual(
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codecs.charmap_decode(b"abc", "test.handler1", {ord("a"): "z"})[0],
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"z[<98>][<99>]"
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)
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self.assertEqual(
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"g\xfc\xdfrk".encode("ascii", "test.handler1"),
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b"g[<252><223>]rk"
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)
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self.assertEqual(
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"g\xfc\xdf".encode("ascii", "test.handler1"),
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b"g[<252><223>]"
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)
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def test_longstrings(self):
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# test long strings to check for memory overflow problems
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errors = [ "strict", "ignore", "replace", "xmlcharrefreplace",
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"backslashreplace", "namereplace"]
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# register the handlers under different names,
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# to prevent the codec from recognizing the name
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for err in errors:
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codecs.register_error("test." + err, codecs.lookup_error(err))
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l = 1000
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errors += [ "test." + err for err in errors ]
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for uni in [ s*l for s in ("x", "\u3042", "a\xe4") ]:
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for enc in ("ascii", "latin-1", "iso-8859-1", "iso-8859-15",
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"utf-8", "utf-7", "utf-16", "utf-32"):
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for err in errors:
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try:
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uni.encode(enc, err)
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except UnicodeError:
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pass
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def check_exceptionobjectargs(self, exctype, args, msg):
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# Test UnicodeError subclasses: construction, attribute assignment and __str__ conversion
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# check with one missing argument
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self.assertRaises(TypeError, exctype, *args[:-1])
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# check with one argument too much
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self.assertRaises(TypeError, exctype, *(args + ["too much"]))
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# check with one argument of the wrong type
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wrongargs = [ "spam", b"eggs", b"spam", 42, 1.0, None ]
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for i in range(len(args)):
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for wrongarg in wrongargs:
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if type(wrongarg) is type(args[i]):
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continue
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# build argument array
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callargs = []
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for j in range(len(args)):
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if i==j:
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callargs.append(wrongarg)
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else:
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callargs.append(args[i])
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self.assertRaises(TypeError, exctype, *callargs)
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# check with the correct number and type of arguments
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exc = exctype(*args)
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self.assertEqual(str(exc), msg)
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def test_unicodeencodeerror(self):
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self.check_exceptionobjectargs(
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UnicodeEncodeError,
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["ascii", "g\xfcrk", 1, 2, "ouch"],
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"'ascii' codec can't encode character '\\xfc' in position 1: ouch"
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)
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self.check_exceptionobjectargs(
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UnicodeEncodeError,
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["ascii", "g\xfcrk", 1, 4, "ouch"],
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"'ascii' codec can't encode characters in position 1-3: ouch"
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)
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self.check_exceptionobjectargs(
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UnicodeEncodeError,
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["ascii", "\xfcx", 0, 1, "ouch"],
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"'ascii' codec can't encode character '\\xfc' in position 0: ouch"
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)
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self.check_exceptionobjectargs(
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UnicodeEncodeError,
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["ascii", "\u0100x", 0, 1, "ouch"],
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"'ascii' codec can't encode character '\\u0100' in position 0: ouch"
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)
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self.check_exceptionobjectargs(
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UnicodeEncodeError,
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["ascii", "\uffffx", 0, 1, "ouch"],
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"'ascii' codec can't encode character '\\uffff' in position 0: ouch"
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)
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self.check_exceptionobjectargs(
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UnicodeEncodeError,
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["ascii", "\U00010000x", 0, 1, "ouch"],
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"'ascii' codec can't encode character '\\U00010000' in position 0: ouch"
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)
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def test_unicodedecodeerror(self):
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self.check_exceptionobjectargs(
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UnicodeDecodeError,
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["ascii", bytearray(b"g\xfcrk"), 1, 2, "ouch"],
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"'ascii' codec can't decode byte 0xfc in position 1: ouch"
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)
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self.check_exceptionobjectargs(
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UnicodeDecodeError,
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["ascii", bytearray(b"g\xfcrk"), 1, 3, "ouch"],
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"'ascii' codec can't decode bytes in position 1-2: ouch"
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)
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|
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def test_unicodetranslateerror(self):
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self.check_exceptionobjectargs(
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UnicodeTranslateError,
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["g\xfcrk", 1, 2, "ouch"],
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"can't translate character '\\xfc' in position 1: ouch"
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)
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self.check_exceptionobjectargs(
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UnicodeTranslateError,
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["g\u0100rk", 1, 2, "ouch"],
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"can't translate character '\\u0100' in position 1: ouch"
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)
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self.check_exceptionobjectargs(
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UnicodeTranslateError,
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["g\uffffrk", 1, 2, "ouch"],
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"can't translate character '\\uffff' in position 1: ouch"
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)
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self.check_exceptionobjectargs(
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UnicodeTranslateError,
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["g\U00010000rk", 1, 2, "ouch"],
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"can't translate character '\\U00010000' in position 1: ouch"
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)
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self.check_exceptionobjectargs(
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UnicodeTranslateError,
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["g\xfcrk", 1, 3, "ouch"],
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"can't translate characters in position 1-2: ouch"
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)
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|
def test_badandgoodstrictexceptions(self):
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# "strict" complains about a non-exception passed in
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self.assertRaises(
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TypeError,
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codecs.strict_errors,
|
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42
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)
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# "strict" complains about the wrong exception type
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self.assertRaises(
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Exception,
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codecs.strict_errors,
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Exception("ouch")
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)
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# If the correct exception is passed in, "strict" raises it
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self.assertRaises(
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UnicodeEncodeError,
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codecs.strict_errors,
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UnicodeEncodeError("ascii", "\u3042", 0, 1, "ouch")
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)
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self.assertRaises(
|
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UnicodeDecodeError,
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codecs.strict_errors,
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UnicodeDecodeError("ascii", bytearray(b"\xff"), 0, 1, "ouch")
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)
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self.assertRaises(
|
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UnicodeTranslateError,
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codecs.strict_errors,
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UnicodeTranslateError("\u3042", 0, 1, "ouch")
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)
|
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|
|
def test_badandgoodignoreexceptions(self):
|
|
# "ignore" complains about a non-exception passed in
|
|
self.assertRaises(
|
|
TypeError,
|
|
codecs.ignore_errors,
|
|
42
|
|
)
|
|
# "ignore" complains about the wrong exception type
|
|
self.assertRaises(
|
|
TypeError,
|
|
codecs.ignore_errors,
|
|
UnicodeError("ouch")
|
|
)
|
|
# If the correct exception is passed in, "ignore" returns an empty replacement
|
|
self.assertEqual(
|
|
codecs.ignore_errors(
|
|
UnicodeEncodeError("ascii", "a\u3042b", 1, 2, "ouch")),
|
|
("", 2)
|
|
)
|
|
self.assertEqual(
|
|
codecs.ignore_errors(
|
|
UnicodeDecodeError("ascii", bytearray(b"a\xffb"), 1, 2, "ouch")),
|
|
("", 2)
|
|
)
|
|
self.assertEqual(
|
|
codecs.ignore_errors(
|
|
UnicodeTranslateError("a\u3042b", 1, 2, "ouch")),
|
|
("", 2)
|
|
)
|
|
|
|
def test_badandgoodreplaceexceptions(self):
|
|
# "replace" complains about a non-exception passed in
|
|
self.assertRaises(
|
|
TypeError,
|
|
codecs.replace_errors,
|
|
42
|
|
)
|
|
# "replace" complains about the wrong exception type
|
|
self.assertRaises(
|
|
TypeError,
|
|
codecs.replace_errors,
|
|
UnicodeError("ouch")
|
|
)
|
|
self.assertRaises(
|
|
TypeError,
|
|
codecs.replace_errors,
|
|
BadObjectUnicodeEncodeError()
|
|
)
|
|
self.assertRaises(
|
|
TypeError,
|
|
codecs.replace_errors,
|
|
BadObjectUnicodeDecodeError()
|
|
)
|
|
# With the correct exception, "replace" returns an "?" or "\ufffd" replacement
|
|
self.assertEqual(
|
|
codecs.replace_errors(
|
|
UnicodeEncodeError("ascii", "a\u3042b", 1, 2, "ouch")),
|
|
("?", 2)
|
|
)
|
|
self.assertEqual(
|
|
codecs.replace_errors(
|
|
UnicodeDecodeError("ascii", bytearray(b"a\xffb"), 1, 2, "ouch")),
|
|
("\ufffd", 2)
|
|
)
|
|
self.assertEqual(
|
|
codecs.replace_errors(
|
|
UnicodeTranslateError("a\u3042b", 1, 2, "ouch")),
|
|
("\ufffd", 2)
|
|
)
|
|
|
|
def test_badandgoodxmlcharrefreplaceexceptions(self):
|
|
# "xmlcharrefreplace" complains about a non-exception passed in
|
|
self.assertRaises(
|
|
TypeError,
|
|
codecs.xmlcharrefreplace_errors,
|
|
42
|
|
)
|
|
# "xmlcharrefreplace" complains about the wrong exception types
|
|
self.assertRaises(
|
|
TypeError,
|
|
codecs.xmlcharrefreplace_errors,
|
|
UnicodeError("ouch")
|
|
)
|
|
# "xmlcharrefreplace" can only be used for encoding
|
|
self.assertRaises(
|
|
TypeError,
|
|
codecs.xmlcharrefreplace_errors,
|
|
UnicodeDecodeError("ascii", bytearray(b"\xff"), 0, 1, "ouch")
|
|
)
|
|
self.assertRaises(
|
|
TypeError,
|
|
codecs.xmlcharrefreplace_errors,
|
|
UnicodeTranslateError("\u3042", 0, 1, "ouch")
|
|
)
|
|
# Use the correct exception
|
|
cs = (0, 1, 9, 10, 99, 100, 999, 1000, 9999, 10000, 99999, 100000,
|
|
999999, 1000000)
|
|
cs += (0xd800, 0xdfff)
|
|
s = "".join(chr(c) for c in cs)
|
|
self.assertEqual(
|
|
codecs.xmlcharrefreplace_errors(
|
|
UnicodeEncodeError("ascii", "a" + s + "b",
|
|
1, 1 + len(s), "ouch")
|
|
),
|
|
("".join("&#%d;" % c for c in cs), 1 + len(s))
|
|
)
|
|
|
|
def test_badandgoodbackslashreplaceexceptions(self):
|
|
# "backslashreplace" complains about a non-exception passed in
|
|
self.assertRaises(
|
|
TypeError,
|
|
codecs.backslashreplace_errors,
|
|
42
|
|
)
|
|
# "backslashreplace" complains about the wrong exception types
|
|
self.assertRaises(
|
|
TypeError,
|
|
codecs.backslashreplace_errors,
|
|
UnicodeError("ouch")
|
|
)
|
|
# Use the correct exception
|
|
tests = [
|
|
("\u3042", "\\u3042"),
|
|
("\n", "\\x0a"),
|
|
("a", "\\x61"),
|
|
("\x00", "\\x00"),
|
|
("\xff", "\\xff"),
|
|
("\u0100", "\\u0100"),
|
|
("\uffff", "\\uffff"),
|
|
("\U00010000", "\\U00010000"),
|
|
("\U0010ffff", "\\U0010ffff"),
|
|
# Lone surrogates
|
|
("\ud800", "\\ud800"),
|
|
("\udfff", "\\udfff"),
|
|
("\ud800\udfff", "\\ud800\\udfff"),
|
|
]
|
|
for s, r in tests:
|
|
with self.subTest(str=s):
|
|
self.assertEqual(
|
|
codecs.backslashreplace_errors(
|
|
UnicodeEncodeError("ascii", "a" + s + "b",
|
|
1, 1 + len(s), "ouch")),
|
|
(r, 1 + len(s))
|
|
)
|
|
self.assertEqual(
|
|
codecs.backslashreplace_errors(
|
|
UnicodeTranslateError("a" + s + "b",
|
|
1, 1 + len(s), "ouch")),
|
|
(r, 1 + len(s))
|
|
)
|
|
tests = [
|
|
(b"a", "\\x61"),
|
|
(b"\n", "\\x0a"),
|
|
(b"\x00", "\\x00"),
|
|
(b"\xff", "\\xff"),
|
|
]
|
|
for b, r in tests:
|
|
with self.subTest(bytes=b):
|
|
self.assertEqual(
|
|
codecs.backslashreplace_errors(
|
|
UnicodeDecodeError("ascii", bytearray(b"a" + b + b"b"),
|
|
1, 2, "ouch")),
|
|
(r, 2)
|
|
)
|
|
|
|
def test_badandgoodnamereplaceexceptions(self):
|
|
# "namereplace" complains about a non-exception passed in
|
|
self.assertRaises(
|
|
TypeError,
|
|
codecs.namereplace_errors,
|
|
42
|
|
)
|
|
# "namereplace" complains about the wrong exception types
|
|
self.assertRaises(
|
|
TypeError,
|
|
codecs.namereplace_errors,
|
|
UnicodeError("ouch")
|
|
)
|
|
# "namereplace" can only be used for encoding
|
|
self.assertRaises(
|
|
TypeError,
|
|
codecs.namereplace_errors,
|
|
UnicodeDecodeError("ascii", bytearray(b"\xff"), 0, 1, "ouch")
|
|
)
|
|
self.assertRaises(
|
|
TypeError,
|
|
codecs.namereplace_errors,
|
|
UnicodeTranslateError("\u3042", 0, 1, "ouch")
|
|
)
|
|
# Use the correct exception
|
|
tests = [
|
|
("\u3042", "\\N{HIRAGANA LETTER A}"),
|
|
("\x00", "\\x00"),
|
|
("\ufbf9", "\\N{ARABIC LIGATURE UIGHUR KIRGHIZ YEH WITH "
|
|
"HAMZA ABOVE WITH ALEF MAKSURA ISOLATED FORM}"),
|
|
("\U000e007f", "\\N{CANCEL TAG}"),
|
|
("\U0010ffff", "\\U0010ffff"),
|
|
# Lone surrogates
|
|
("\ud800", "\\ud800"),
|
|
("\udfff", "\\udfff"),
|
|
("\ud800\udfff", "\\ud800\\udfff"),
|
|
]
|
|
for s, r in tests:
|
|
with self.subTest(str=s):
|
|
self.assertEqual(
|
|
codecs.namereplace_errors(
|
|
UnicodeEncodeError("ascii", "a" + s + "b",
|
|
1, 1 + len(s), "ouch")),
|
|
(r, 1 + len(s))
|
|
)
|
|
|
|
def test_badandgoodsurrogateescapeexceptions(self):
|
|
surrogateescape_errors = codecs.lookup_error('surrogateescape')
|
|
# "surrogateescape" complains about a non-exception passed in
|
|
self.assertRaises(
|
|
TypeError,
|
|
surrogateescape_errors,
|
|
42
|
|
)
|
|
# "surrogateescape" complains about the wrong exception types
|
|
self.assertRaises(
|
|
TypeError,
|
|
surrogateescape_errors,
|
|
UnicodeError("ouch")
|
|
)
|
|
# "surrogateescape" can not be used for translating
|
|
self.assertRaises(
|
|
TypeError,
|
|
surrogateescape_errors,
|
|
UnicodeTranslateError("\udc80", 0, 1, "ouch")
|
|
)
|
|
# Use the correct exception
|
|
for s in ("a", "\udc7f", "\udd00"):
|
|
with self.subTest(str=s):
|
|
self.assertRaises(
|
|
UnicodeEncodeError,
|
|
surrogateescape_errors,
|
|
UnicodeEncodeError("ascii", s, 0, 1, "ouch")
|
|
)
|
|
self.assertEqual(
|
|
surrogateescape_errors(
|
|
UnicodeEncodeError("ascii", "a\udc80b", 1, 2, "ouch")),
|
|
(b"\x80", 2)
|
|
)
|
|
self.assertRaises(
|
|
UnicodeDecodeError,
|
|
surrogateescape_errors,
|
|
UnicodeDecodeError("ascii", bytearray(b"a"), 0, 1, "ouch")
|
|
)
|
|
self.assertEqual(
|
|
surrogateescape_errors(
|
|
UnicodeDecodeError("ascii", bytearray(b"a\x80b"), 1, 2, "ouch")),
|
|
("\udc80", 2)
|
|
)
|
|
|
|
def test_badandgoodsurrogatepassexceptions(self):
|
|
surrogatepass_errors = codecs.lookup_error('surrogatepass')
|
|
# "surrogatepass" complains about a non-exception passed in
|
|
self.assertRaises(
|
|
TypeError,
|
|
surrogatepass_errors,
|
|
42
|
|
)
|
|
# "surrogatepass" complains about the wrong exception types
|
|
self.assertRaises(
|
|
TypeError,
|
|
surrogatepass_errors,
|
|
UnicodeError("ouch")
|
|
)
|
|
# "surrogatepass" can not be used for translating
|
|
self.assertRaises(
|
|
TypeError,
|
|
surrogatepass_errors,
|
|
UnicodeTranslateError("\ud800", 0, 1, "ouch")
|
|
)
|
|
# Use the correct exception
|
|
for enc in ("utf-8", "utf-16le", "utf-16be", "utf-32le", "utf-32be"):
|
|
with self.subTest(encoding=enc):
|
|
self.assertRaises(
|
|
UnicodeEncodeError,
|
|
surrogatepass_errors,
|
|
UnicodeEncodeError(enc, "a", 0, 1, "ouch")
|
|
)
|
|
self.assertRaises(
|
|
UnicodeDecodeError,
|
|
surrogatepass_errors,
|
|
UnicodeDecodeError(enc, "a".encode(enc), 0, 1, "ouch")
|
|
)
|
|
for s in ("\ud800", "\udfff", "\ud800\udfff"):
|
|
with self.subTest(str=s):
|
|
self.assertRaises(
|
|
UnicodeEncodeError,
|
|
surrogatepass_errors,
|
|
UnicodeEncodeError("ascii", s, 0, len(s), "ouch")
|
|
)
|
|
tests = [
|
|
("utf-8", "\ud800", b'\xed\xa0\x80', 3),
|
|
("utf-16le", "\ud800", b'\x00\xd8', 2),
|
|
("utf-16be", "\ud800", b'\xd8\x00', 2),
|
|
("utf-32le", "\ud800", b'\x00\xd8\x00\x00', 4),
|
|
("utf-32be", "\ud800", b'\x00\x00\xd8\x00', 4),
|
|
("utf-8", "\udfff", b'\xed\xbf\xbf', 3),
|
|
("utf-16le", "\udfff", b'\xff\xdf', 2),
|
|
("utf-16be", "\udfff", b'\xdf\xff', 2),
|
|
("utf-32le", "\udfff", b'\xff\xdf\x00\x00', 4),
|
|
("utf-32be", "\udfff", b'\x00\x00\xdf\xff', 4),
|
|
("utf-8", "\ud800\udfff", b'\xed\xa0\x80\xed\xbf\xbf', 3),
|
|
("utf-16le", "\ud800\udfff", b'\x00\xd8\xff\xdf', 2),
|
|
("utf-16be", "\ud800\udfff", b'\xd8\x00\xdf\xff', 2),
|
|
("utf-32le", "\ud800\udfff", b'\x00\xd8\x00\x00\xff\xdf\x00\x00', 4),
|
|
("utf-32be", "\ud800\udfff", b'\x00\x00\xd8\x00\x00\x00\xdf\xff', 4),
|
|
]
|
|
for enc, s, b, n in tests:
|
|
with self.subTest(encoding=enc, str=s, bytes=b):
|
|
self.assertEqual(
|
|
surrogatepass_errors(
|
|
UnicodeEncodeError(enc, "a" + s + "b",
|
|
1, 1 + len(s), "ouch")),
|
|
(b, 1 + len(s))
|
|
)
|
|
self.assertEqual(
|
|
surrogatepass_errors(
|
|
UnicodeDecodeError(enc, bytearray(b"a" + b[:n] + b"b"),
|
|
1, 1 + n, "ouch")),
|
|
(s[:1], 1 + n)
|
|
)
|
|
|
|
def test_badhandlerresults(self):
|
|
results = ( 42, "foo", (1,2,3), ("foo", 1, 3), ("foo", None), ("foo",), ("foo", 1, 3), ("foo", None), ("foo",) )
|
|
encs = ("ascii", "latin-1", "iso-8859-1", "iso-8859-15")
|
|
|
|
for res in results:
|
|
codecs.register_error("test.badhandler", lambda x: res)
|
|
for enc in encs:
|
|
self.assertRaises(
|
|
TypeError,
|
|
"\u3042".encode,
|
|
enc,
|
|
"test.badhandler"
|
|
)
|
|
for (enc, bytes) in (
|
|
("ascii", b"\xff"),
|
|
("utf-8", b"\xff"),
|
|
("utf-7", b"+x-"),
|
|
("unicode-internal", b"\x00"),
|
|
):
|
|
with test.support.check_warnings():
|
|
# unicode-internal has been deprecated
|
|
self.assertRaises(
|
|
TypeError,
|
|
bytes.decode,
|
|
enc,
|
|
"test.badhandler"
|
|
)
|
|
|
|
def test_lookup(self):
|
|
self.assertEqual(codecs.strict_errors, codecs.lookup_error("strict"))
|
|
self.assertEqual(codecs.ignore_errors, codecs.lookup_error("ignore"))
|
|
self.assertEqual(codecs.strict_errors, codecs.lookup_error("strict"))
|
|
self.assertEqual(
|
|
codecs.xmlcharrefreplace_errors,
|
|
codecs.lookup_error("xmlcharrefreplace")
|
|
)
|
|
self.assertEqual(
|
|
codecs.backslashreplace_errors,
|
|
codecs.lookup_error("backslashreplace")
|
|
)
|
|
self.assertEqual(
|
|
codecs.namereplace_errors,
|
|
codecs.lookup_error("namereplace")
|
|
)
|
|
|
|
def test_unencodablereplacement(self):
|
|
def unencrepl(exc):
|
|
if isinstance(exc, UnicodeEncodeError):
|
|
return ("\u4242", exc.end)
|
|
else:
|
|
raise TypeError("don't know how to handle %r" % exc)
|
|
codecs.register_error("test.unencreplhandler", unencrepl)
|
|
for enc in ("ascii", "iso-8859-1", "iso-8859-15"):
|
|
self.assertRaises(
|
|
UnicodeEncodeError,
|
|
"\u4242".encode,
|
|
enc,
|
|
"test.unencreplhandler"
|
|
)
|
|
|
|
def test_badregistercall(self):
|
|
# enhance coverage of:
|
|
# Modules/_codecsmodule.c::register_error()
|
|
# Python/codecs.c::PyCodec_RegisterError()
|
|
self.assertRaises(TypeError, codecs.register_error, 42)
|
|
self.assertRaises(TypeError, codecs.register_error, "test.dummy", 42)
|
|
|
|
def test_badlookupcall(self):
|
|
# enhance coverage of:
|
|
# Modules/_codecsmodule.c::lookup_error()
|
|
self.assertRaises(TypeError, codecs.lookup_error)
|
|
|
|
def test_unknownhandler(self):
|
|
# enhance coverage of:
|
|
# Modules/_codecsmodule.c::lookup_error()
|
|
self.assertRaises(LookupError, codecs.lookup_error, "test.unknown")
|
|
|
|
def test_xmlcharrefvalues(self):
|
|
# enhance coverage of:
|
|
# Python/codecs.c::PyCodec_XMLCharRefReplaceErrors()
|
|
# and inline implementations
|
|
v = (1, 5, 10, 50, 100, 500, 1000, 5000, 10000, 50000, 100000,
|
|
500000, 1000000)
|
|
s = "".join([chr(x) for x in v])
|
|
codecs.register_error("test.xmlcharrefreplace", codecs.xmlcharrefreplace_errors)
|
|
for enc in ("ascii", "iso-8859-15"):
|
|
for err in ("xmlcharrefreplace", "test.xmlcharrefreplace"):
|
|
s.encode(enc, err)
|
|
|
|
def test_decodehelper(self):
|
|
# enhance coverage of:
|
|
# Objects/unicodeobject.c::unicode_decode_call_errorhandler()
|
|
# and callers
|
|
self.assertRaises(LookupError, b"\xff".decode, "ascii", "test.unknown")
|
|
|
|
def baddecodereturn1(exc):
|
|
return 42
|
|
codecs.register_error("test.baddecodereturn1", baddecodereturn1)
|
|
self.assertRaises(TypeError, b"\xff".decode, "ascii", "test.baddecodereturn1")
|
|
self.assertRaises(TypeError, b"\\".decode, "unicode-escape", "test.baddecodereturn1")
|
|
self.assertRaises(TypeError, b"\\x0".decode, "unicode-escape", "test.baddecodereturn1")
|
|
self.assertRaises(TypeError, b"\\x0y".decode, "unicode-escape", "test.baddecodereturn1")
|
|
self.assertRaises(TypeError, b"\\Uffffeeee".decode, "unicode-escape", "test.baddecodereturn1")
|
|
self.assertRaises(TypeError, b"\\uyyyy".decode, "raw-unicode-escape", "test.baddecodereturn1")
|
|
|
|
def baddecodereturn2(exc):
|
|
return ("?", None)
|
|
codecs.register_error("test.baddecodereturn2", baddecodereturn2)
|
|
self.assertRaises(TypeError, b"\xff".decode, "ascii", "test.baddecodereturn2")
|
|
|
|
handler = PosReturn()
|
|
codecs.register_error("test.posreturn", handler.handle)
|
|
|
|
# Valid negative position
|
|
handler.pos = -1
|
|
self.assertEqual(b"\xff0".decode("ascii", "test.posreturn"), "<?>0")
|
|
|
|
# Valid negative position
|
|
handler.pos = -2
|
|
self.assertEqual(b"\xff0".decode("ascii", "test.posreturn"), "<?><?>")
|
|
|
|
# Negative position out of bounds
|
|
handler.pos = -3
|
|
self.assertRaises(IndexError, b"\xff0".decode, "ascii", "test.posreturn")
|
|
|
|
# Valid positive position
|
|
handler.pos = 1
|
|
self.assertEqual(b"\xff0".decode("ascii", "test.posreturn"), "<?>0")
|
|
|
|
# Largest valid positive position (one beyond end of input)
|
|
handler.pos = 2
|
|
self.assertEqual(b"\xff0".decode("ascii", "test.posreturn"), "<?>")
|
|
|
|
# Invalid positive position
|
|
handler.pos = 3
|
|
self.assertRaises(IndexError, b"\xff0".decode, "ascii", "test.posreturn")
|
|
|
|
# Restart at the "0"
|
|
handler.pos = 6
|
|
self.assertEqual(b"\\uyyyy0".decode("raw-unicode-escape", "test.posreturn"), "<?>0")
|
|
|
|
class D(dict):
|
|
def __getitem__(self, key):
|
|
raise ValueError
|
|
self.assertRaises(UnicodeError, codecs.charmap_decode, b"\xff", "strict", {0xff: None})
|
|
self.assertRaises(ValueError, codecs.charmap_decode, b"\xff", "strict", D())
|
|
self.assertRaises(TypeError, codecs.charmap_decode, b"\xff", "strict", {0xff: sys.maxunicode+1})
|
|
|
|
def test_encodehelper(self):
|
|
# enhance coverage of:
|
|
# Objects/unicodeobject.c::unicode_encode_call_errorhandler()
|
|
# and callers
|
|
self.assertRaises(LookupError, "\xff".encode, "ascii", "test.unknown")
|
|
|
|
def badencodereturn1(exc):
|
|
return 42
|
|
codecs.register_error("test.badencodereturn1", badencodereturn1)
|
|
self.assertRaises(TypeError, "\xff".encode, "ascii", "test.badencodereturn1")
|
|
|
|
def badencodereturn2(exc):
|
|
return ("?", None)
|
|
codecs.register_error("test.badencodereturn2", badencodereturn2)
|
|
self.assertRaises(TypeError, "\xff".encode, "ascii", "test.badencodereturn2")
|
|
|
|
handler = PosReturn()
|
|
codecs.register_error("test.posreturn", handler.handle)
|
|
|
|
# Valid negative position
|
|
handler.pos = -1
|
|
self.assertEqual("\xff0".encode("ascii", "test.posreturn"), b"<?>0")
|
|
|
|
# Valid negative position
|
|
handler.pos = -2
|
|
self.assertEqual("\xff0".encode("ascii", "test.posreturn"), b"<?><?>")
|
|
|
|
# Negative position out of bounds
|
|
handler.pos = -3
|
|
self.assertRaises(IndexError, "\xff0".encode, "ascii", "test.posreturn")
|
|
|
|
# Valid positive position
|
|
handler.pos = 1
|
|
self.assertEqual("\xff0".encode("ascii", "test.posreturn"), b"<?>0")
|
|
|
|
# Largest valid positive position (one beyond end of input
|
|
handler.pos = 2
|
|
self.assertEqual("\xff0".encode("ascii", "test.posreturn"), b"<?>")
|
|
|
|
# Invalid positive position
|
|
handler.pos = 3
|
|
self.assertRaises(IndexError, "\xff0".encode, "ascii", "test.posreturn")
|
|
|
|
handler.pos = 0
|
|
|
|
class D(dict):
|
|
def __getitem__(self, key):
|
|
raise ValueError
|
|
for err in ("strict", "replace", "xmlcharrefreplace",
|
|
"backslashreplace", "namereplace", "test.posreturn"):
|
|
self.assertRaises(UnicodeError, codecs.charmap_encode, "\xff", err, {0xff: None})
|
|
self.assertRaises(ValueError, codecs.charmap_encode, "\xff", err, D())
|
|
self.assertRaises(TypeError, codecs.charmap_encode, "\xff", err, {0xff: 300})
|
|
|
|
def test_translatehelper(self):
|
|
# enhance coverage of:
|
|
# Objects/unicodeobject.c::unicode_encode_call_errorhandler()
|
|
# and callers
|
|
# (Unfortunately the errors argument is not directly accessible
|
|
# from Python, so we can't test that much)
|
|
class D(dict):
|
|
def __getitem__(self, key):
|
|
raise ValueError
|
|
#self.assertRaises(ValueError, "\xff".translate, D())
|
|
self.assertRaises(ValueError, "\xff".translate, {0xff: sys.maxunicode+1})
|
|
self.assertRaises(TypeError, "\xff".translate, {0xff: ()})
|
|
|
|
def test_bug828737(self):
|
|
charmap = {
|
|
ord("&"): "&",
|
|
ord("<"): "<",
|
|
ord(">"): ">",
|
|
ord('"'): """,
|
|
}
|
|
|
|
for n in (1, 10, 100, 1000):
|
|
text = 'abc<def>ghi'*n
|
|
text.translate(charmap)
|
|
|
|
def test_mutatingdecodehandler(self):
|
|
baddata = [
|
|
("ascii", b"\xff"),
|
|
("utf-7", b"++"),
|
|
("utf-8", b"\xff"),
|
|
("utf-16", b"\xff"),
|
|
("utf-32", b"\xff"),
|
|
("unicode-escape", b"\\u123g"),
|
|
("raw-unicode-escape", b"\\u123g"),
|
|
("unicode-internal", b"\xff"),
|
|
]
|
|
|
|
def replacing(exc):
|
|
if isinstance(exc, UnicodeDecodeError):
|
|
exc.object = 42
|
|
return ("\u4242", 0)
|
|
else:
|
|
raise TypeError("don't know how to handle %r" % exc)
|
|
codecs.register_error("test.replacing", replacing)
|
|
|
|
with test.support.check_warnings():
|
|
# unicode-internal has been deprecated
|
|
for (encoding, data) in baddata:
|
|
with self.assertRaises(TypeError):
|
|
data.decode(encoding, "test.replacing")
|
|
|
|
def mutating(exc):
|
|
if isinstance(exc, UnicodeDecodeError):
|
|
exc.object = b""
|
|
return ("\u4242", 0)
|
|
else:
|
|
raise TypeError("don't know how to handle %r" % exc)
|
|
codecs.register_error("test.mutating", mutating)
|
|
# If the decoder doesn't pick up the modified input the following
|
|
# will lead to an endless loop
|
|
with test.support.check_warnings():
|
|
# unicode-internal has been deprecated
|
|
for (encoding, data) in baddata:
|
|
self.assertEqual(data.decode(encoding, "test.mutating"), "\u4242")
|
|
|
|
# issue32583
|
|
def test_crashing_decode_handler(self):
|
|
# better generating one more character to fill the extra space slot
|
|
# so in debug build it can steadily fail
|
|
def forward_shorter_than_end(exc):
|
|
if isinstance(exc, UnicodeDecodeError):
|
|
# size one character, 0 < forward < exc.end
|
|
return ('\ufffd', exc.start+1)
|
|
else:
|
|
raise TypeError("don't know how to handle %r" % exc)
|
|
codecs.register_error(
|
|
"test.forward_shorter_than_end", forward_shorter_than_end)
|
|
|
|
self.assertEqual(
|
|
b'\xd8\xd8\xd8\xd8\xd8\x00\x00\x00'.decode(
|
|
'utf-16-le', 'test.forward_shorter_than_end'),
|
|
'\ufffd\ufffd\ufffd\ufffd\xd8\x00'
|
|
)
|
|
self.assertEqual(
|
|
b'\xd8\xd8\xd8\xd8\x00\xd8\x00\x00'.decode(
|
|
'utf-16-be', 'test.forward_shorter_than_end'),
|
|
'\ufffd\ufffd\ufffd\ufffd\xd8\x00'
|
|
)
|
|
self.assertEqual(
|
|
b'\x11\x11\x11\x11\x11\x00\x00\x00\x00\x00\x00'.decode(
|
|
'utf-32-le', 'test.forward_shorter_than_end'),
|
|
'\ufffd\ufffd\ufffd\u1111\x00'
|
|
)
|
|
self.assertEqual(
|
|
b'\x11\x11\x11\x00\x00\x11\x11\x00\x00\x00\x00'.decode(
|
|
'utf-32-be', 'test.forward_shorter_than_end'),
|
|
'\ufffd\ufffd\ufffd\u1111\x00'
|
|
)
|
|
|
|
def replace_with_long(exc):
|
|
if isinstance(exc, UnicodeDecodeError):
|
|
exc.object = b"\x00" * 8
|
|
return ('\ufffd', exc.start)
|
|
else:
|
|
raise TypeError("don't know how to handle %r" % exc)
|
|
codecs.register_error("test.replace_with_long", replace_with_long)
|
|
|
|
self.assertEqual(
|
|
b'\x00'.decode('utf-16', 'test.replace_with_long'),
|
|
'\ufffd\x00\x00\x00\x00'
|
|
)
|
|
self.assertEqual(
|
|
b'\x00'.decode('utf-32', 'test.replace_with_long'),
|
|
'\ufffd\x00\x00'
|
|
)
|
|
|
|
|
|
def test_fake_error_class(self):
|
|
handlers = [
|
|
codecs.strict_errors,
|
|
codecs.ignore_errors,
|
|
codecs.replace_errors,
|
|
codecs.backslashreplace_errors,
|
|
codecs.namereplace_errors,
|
|
codecs.xmlcharrefreplace_errors,
|
|
codecs.lookup_error('surrogateescape'),
|
|
codecs.lookup_error('surrogatepass'),
|
|
]
|
|
for cls in UnicodeEncodeError, UnicodeDecodeError, UnicodeTranslateError:
|
|
class FakeUnicodeError(str):
|
|
__class__ = cls
|
|
for handler in handlers:
|
|
with self.subTest(handler=handler, error_class=cls):
|
|
self.assertRaises(TypeError, handler, FakeUnicodeError())
|
|
class FakeUnicodeError(Exception):
|
|
__class__ = cls
|
|
for handler in handlers:
|
|
with self.subTest(handler=handler, error_class=cls):
|
|
with self.assertRaises((TypeError, FakeUnicodeError)):
|
|
handler(FakeUnicodeError())
|
|
|
|
|
|
if __name__ == "__main__":
|
|
unittest.main()
|