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📁 ..	-	2026-03-21 15:53
📄 __init__.py # coding: utf-8 """ webencodings ~~~~~~~~~~~~ This is a Python implementation of the `WHATWG Encoding standard <http://encoding.spec.whatwg.org/>`. See README for details. :copyright: Copyright 2012 by Simon Sapin :license: BSD, see LICENSE for details. """ from __future__ import unicode_literals import codecs from .labels import LABELS VERSION = '0.5.1' # Some names in Encoding are not valid Python aliases. Remap these. PYTHON_NAMES = { 'iso-8859-8-i': 'iso-8859-8', 'x-mac-cyrillic': 'mac-cyrillic', 'macintosh': 'mac-roman', 'windows-874': 'cp874'} CACHE = {} def ascii_lower(string): r"""Transform (only) ASCII letters to lower case: A-Z is mapped to a-z. :param string: An Unicode string. :returns: A new Unicode string. This is used for `ASCII case-insensitive <http://encoding.spec.whatwg.org/#ascii-case-insensitive>`_ matching of encoding labels. The same matching is also used, among other things, for `CSS keywords <http://dev.w3.org/csswg/css-values/#keywords>`_. This is different from the :meth:`~py:str.lower` method of Unicode strings which also affect non-ASCII characters, sometimes mapping them into the ASCII range: >>> keyword = u'Bac\N{KELVIN SIGN}ground' >>> assert keyword.lower() == u'background' >>> assert ascii_lower(keyword) != keyword.lower() >>> assert ascii_lower(keyword) == u'bac\N{KELVIN SIGN}ground' """ # This turns out to be faster than unicode.translate() return string.encode('utf8').lower().decode('utf8') def lookup(label): """ Look for an encoding by its label. This is the spec’s `get an encoding <http://encoding.spec.whatwg.org/#concept-encoding-get>`_ algorithm. Supported labels are listed there. :param label: A string. :returns: An :class:`Encoding` object, or :obj:`None` for an unknown label. """ # Only strip ASCII whitespace: U+0009, U+000A, U+000C, U+000D, and U+0020. label = ascii_lower(label.strip('\t\n\f\r ')) name = LABELS.get(label) if name is None: return None encoding = CACHE.get(name) if encoding is None: if name == 'x-user-defined': from .x_user_defined import codec_info else: python_name = PYTHON_NAMES.get(name, name) # Any python_name value that gets to here should be valid. codec_info = codecs.lookup(python_name) encoding = Encoding(name, codec_info) CACHE[name] = encoding return encoding def _get_encoding(encoding_or_label): """ Accept either an encoding object or label. :param encoding: An :class:`Encoding` object or a label string. :returns: An :class:`Encoding` object. :raises: :exc:`~exceptions.LookupError` for an unknown label. """ if hasattr(encoding_or_label, 'codec_info'): return encoding_or_label encoding = lookup(encoding_or_label) if encoding is None: raise LookupError('Unknown encoding label: %r' % encoding_or_label) return encoding class Encoding(object): """Reresents a character encoding such as UTF-8, that can be used for decoding or encoding. .. attribute:: name Canonical name of the encoding .. attribute:: codec_info The actual implementation of the encoding, a stdlib :class:`~codecs.CodecInfo` object. See :func:`codecs.register`. """ def __init__(self, name, codec_info): self.name = name self.codec_info = codec_info def __repr__(self): return '<Encoding %s>' % self.name #: The UTF-8 encoding. Should be used for new content and formats. UTF8 = lookup('utf-8') _UTF16LE = lookup('utf-16le') _UTF16BE = lookup('utf-16be') def decode(input, fallback_encoding, errors='replace'): """ Decode a single string. :param input: A byte string :param fallback_encoding: An :class:`Encoding` object or a label string. The encoding to use if :obj:`input` does note have a BOM. :param errors: Type of error handling. See :func:`codecs.register`. :raises: :exc:`~exceptions.LookupError` for an unknown encoding label. :return: A ``(output, encoding)`` tuple of an Unicode string and an :obj:`Encoding`. """ # Fail early if `encoding` is an invalid label. fallback_encoding = _get_encoding(fallback_encoding) bom_encoding, input = _detect_bom(input) encoding = bom_encoding or fallback_encoding return encoding.codec_info.decode(input, errors)[0], encoding def _detect_bom(input): """Return (bom_encoding, input), with any BOM removed from the input.""" if input.startswith(b'\xFF\xFE'): return _UTF16LE, input[2:] if input.startswith(b'\xFE\xFF'): return _UTF16BE, input[2:] if input.startswith(b'\xEF\xBB\xBF'): return UTF8, input[3:] return None, input def encode(input, encoding=UTF8, errors='strict'): """ Encode a single string. :param input: An Unicode string. :param encoding: An :class:`Encoding` object or a label string. :param errors: Type of error handling. See :func:`codecs.register`. :raises: :exc:`~exceptions.LookupError` for an unknown encoding label. :return: A byte string. """ return _get_encoding(encoding).codec_info.encode(input, errors)[0] def iter_decode(input, fallback_encoding, errors='replace'): """ "Pull"-based decoder. :param input: An iterable of byte strings. The input is first consumed just enough to determine the encoding based on the precense of a BOM, then consumed on demand when the return value is. :param fallback_encoding: An :class:`Encoding` object or a label string. The encoding to use if :obj:`input` does note have a BOM. :param errors: Type of error handling. See :func:`codecs.register`. :raises: :exc:`~exceptions.LookupError` for an unknown encoding label. :returns: An ``(output, encoding)`` tuple. :obj:`output` is an iterable of Unicode strings, :obj:`encoding` is the :obj:`Encoding` that is being used. """ decoder = IncrementalDecoder(fallback_encoding, errors) generator = _iter_decode_generator(input, decoder) encoding = next(generator) return generator, encoding def _iter_decode_generator(input, decoder): """Return a generator that first yields the :obj:`Encoding`, then yields output chukns as Unicode strings. """ decode = decoder.decode input = iter(input) for chunck in input: output = decode(chunck) if output: assert decoder.encoding is not None yield decoder.encoding yield output break else: # Input exhausted without determining the encoding output = decode(b'', final=True) assert decoder.encoding is not None yield decoder.encoding if output: yield output return for chunck in input: output = decode(chunck) if output: yield output output = decode(b'', final=True) if output: yield output def iter_encode(input, encoding=UTF8, errors='strict'): """ “Pull”-based encoder. :param input: An iterable of Unicode strings. :param encoding: An :class:`Encoding` object or a label string. :param errors: Type of error handling. See :func:`codecs.register`. :raises: :exc:`~exceptions.LookupError` for an unknown encoding label. :returns: An iterable of byte strings. """ # Fail early if `encoding` is an invalid label. encode = IncrementalEncoder(encoding, errors).encode return _iter_encode_generator(input, encode) def _iter_encode_generator(input, encode): for chunck in input: output = encode(chunck) if output: yield output output = encode('', final=True) if output: yield output class IncrementalDecoder(object): """ “Push”-based decoder. :param fallback_encoding: An :class:`Encoding` object or a label string. The encoding to use if :obj:`input` does note have a BOM. :param errors: Type of error handling. See :func:`codecs.register`. :raises: :exc:`~exceptions.LookupError` for an unknown encoding label. """ def __init__(self, fallback_encoding, errors='replace'): # Fail early if `encoding` is an invalid label. self._fallback_encoding = _get_encoding(fallback_encoding) self._errors = errors self._buffer = b'' self._decoder = None #: The actual :class:`Encoding` that is being used, #: or :obj:`None` if that is not determined yet. #: (Ie. if there is not enough input yet to determine #: if there is a BOM.) self.encoding = None # Not known yet. def decode(self, input, final=False): """Decode one chunk of the input. :param input: A byte string. :param final: Indicate that no more input is available. Must be :obj:`True` if this is the last call. :returns: An Unicode string. """ decoder = self._decoder if decoder is not None: return decoder(input, final) input = self._buffer + input encoding, input = _detect_bom(input) if encoding is None: if len(input) < 3 and not final: # Not enough data yet. self._buffer = input return '' else: # No BOM encoding = self._fallback_encoding decoder = encoding.codec_info.incrementaldecoder(self._errors).decode self._decoder = decoder self.encoding = encoding return decoder(input, final) class IncrementalEncoder(object): """ “Push”-based encoder. :param encoding: An :class:`Encoding` object or a label string. :param errors: Type of error handling. See :func:`codecs.register`. :raises: :exc:`~exceptions.LookupError` for an unknown encoding label. .. method:: encode(input, final=False) :param input: An Unicode string. :param final: Indicate that no more input is available. Must be :obj:`True` if this is the last call. :returns: A byte string. """ def __init__(self, encoding=UTF8, errors='strict'): encoding = _get_encoding(encoding) self.encode = encoding.codec_info.incrementalencoder(errors).encode	10.33 KB	2026-01-07 23:39
📁 __pycache__	-	2026-03-21 15:53
📄 labels.py """ webencodings.labels ~~~~~~~~~~~~~~~~~~~ Map encoding labels to their name. :copyright: Copyright 2012 by Simon Sapin :license: BSD, see LICENSE for details. """ # XXX Do not edit! # This file is automatically generated by mklabels.py LABELS = { 'unicode-1-1-utf-8': 'utf-8', 'utf-8': 'utf-8', 'utf8': 'utf-8', '866': 'ibm866', 'cp866': 'ibm866', 'csibm866': 'ibm866', 'ibm866': 'ibm866', 'csisolatin2': 'iso-8859-2', 'iso-8859-2': 'iso-8859-2', 'iso-ir-101': 'iso-8859-2', 'iso8859-2': 'iso-8859-2', 'iso88592': 'iso-8859-2', 'iso_8859-2': 'iso-8859-2', 'iso_8859-2:1987': 'iso-8859-2', 'l2': 'iso-8859-2', 'latin2': 'iso-8859-2', 'csisolatin3': 'iso-8859-3', 'iso-8859-3': 'iso-8859-3', 'iso-ir-109': 'iso-8859-3', 'iso8859-3': 'iso-8859-3', 'iso88593': 'iso-8859-3', 'iso_8859-3': 'iso-8859-3', 'iso_8859-3:1988': 'iso-8859-3', 'l3': 'iso-8859-3', 'latin3': 'iso-8859-3', 'csisolatin4': 'iso-8859-4', 'iso-8859-4': 'iso-8859-4', 'iso-ir-110': 'iso-8859-4', 'iso8859-4': 'iso-8859-4', 'iso88594': 'iso-8859-4', 'iso_8859-4': 'iso-8859-4', 'iso_8859-4:1988': 'iso-8859-4', 'l4': 'iso-8859-4', 'latin4': 'iso-8859-4', 'csisolatincyrillic': 'iso-8859-5', 'cyrillic': 'iso-8859-5', 'iso-8859-5': 'iso-8859-5', 'iso-ir-144': 'iso-8859-5', 'iso8859-5': 'iso-8859-5', 'iso88595': 'iso-8859-5', 'iso_8859-5': 'iso-8859-5', 'iso_8859-5:1988': 'iso-8859-5', 'arabic': 'iso-8859-6', 'asmo-708': 'iso-8859-6', 'csiso88596e': 'iso-8859-6', 'csiso88596i': 'iso-8859-6', 'csisolatinarabic': 'iso-8859-6', 'ecma-114': 'iso-8859-6', 'iso-8859-6': 'iso-8859-6', 'iso-8859-6-e': 'iso-8859-6', 'iso-8859-6-i': 'iso-8859-6', 'iso-ir-127': 'iso-8859-6', 'iso8859-6': 'iso-8859-6', 'iso88596': 'iso-8859-6', 'iso_8859-6': 'iso-8859-6', 'iso_8859-6:1987': 'iso-8859-6', 'csisolatingreek': 'iso-8859-7', 'ecma-118': 'iso-8859-7', 'elot_928': 'iso-8859-7', 'greek': 'iso-8859-7', 'greek8': 'iso-8859-7', 'iso-8859-7': 'iso-8859-7', 'iso-ir-126': 'iso-8859-7', 'iso8859-7': 'iso-8859-7', 'iso88597': 'iso-8859-7', 'iso_8859-7': 'iso-8859-7', 'iso_8859-7:1987': 'iso-8859-7', 'sun_eu_greek': 'iso-8859-7', 'csiso88598e': 'iso-8859-8', 'csisolatinhebrew': 'iso-8859-8', 'hebrew': 'iso-8859-8', 'iso-8859-8': 'iso-8859-8', 'iso-8859-8-e': 'iso-8859-8', 'iso-ir-138': 'iso-8859-8', 'iso8859-8': 'iso-8859-8', 'iso88598': 'iso-8859-8', 'iso_8859-8': 'iso-8859-8', 'iso_8859-8:1988': 'iso-8859-8', 'visual': 'iso-8859-8', 'csiso88598i': 'iso-8859-8-i', 'iso-8859-8-i': 'iso-8859-8-i', 'logical': 'iso-8859-8-i', 'csisolatin6': 'iso-8859-10', 'iso-8859-10': 'iso-8859-10', 'iso-ir-157': 'iso-8859-10', 'iso8859-10': 'iso-8859-10', 'iso885910': 'iso-8859-10', 'l6': 'iso-8859-10', 'latin6': 'iso-8859-10', 'iso-8859-13': 'iso-8859-13', 'iso8859-13': 'iso-8859-13', 'iso885913': 'iso-8859-13', 'iso-8859-14': 'iso-8859-14', 'iso8859-14': 'iso-8859-14', 'iso885914': 'iso-8859-14', 'csisolatin9': 'iso-8859-15', 'iso-8859-15': 'iso-8859-15', 'iso8859-15': 'iso-8859-15', 'iso885915': 'iso-8859-15', 'iso_8859-15': 'iso-8859-15', 'l9': 'iso-8859-15', 'iso-8859-16': 'iso-8859-16', 'cskoi8r': 'koi8-r', 'koi': 'koi8-r', 'koi8': 'koi8-r', 'koi8-r': 'koi8-r', 'koi8_r': 'koi8-r', 'koi8-u': 'koi8-u', 'csmacintosh': 'macintosh', 'mac': 'macintosh', 'macintosh': 'macintosh', 'x-mac-roman': 'macintosh', 'dos-874': 'windows-874', 'iso-8859-11': 'windows-874', 'iso8859-11': 'windows-874', 'iso885911': 'windows-874', 'tis-620': 'windows-874', 'windows-874': 'windows-874', 'cp1250': 'windows-1250', 'windows-1250': 'windows-1250', 'x-cp1250': 'windows-1250', 'cp1251': 'windows-1251', 'windows-1251': 'windows-1251', 'x-cp1251': 'windows-1251', 'ansi_x3.4-1968': 'windows-1252', 'ascii': 'windows-1252', 'cp1252': 'windows-1252', 'cp819': 'windows-1252', 'csisolatin1': 'windows-1252', 'ibm819': 'windows-1252', 'iso-8859-1': 'windows-1252', 'iso-ir-100': 'windows-1252', 'iso8859-1': 'windows-1252', 'iso88591': 'windows-1252', 'iso_8859-1': 'windows-1252', 'iso_8859-1:1987': 'windows-1252', 'l1': 'windows-1252', 'latin1': 'windows-1252', 'us-ascii': 'windows-1252', 'windows-1252': 'windows-1252', 'x-cp1252': 'windows-1252', 'cp1253': 'windows-1253', 'windows-1253': 'windows-1253', 'x-cp1253': 'windows-1253', 'cp1254': 'windows-1254', 'csisolatin5': 'windows-1254', 'iso-8859-9': 'windows-1254', 'iso-ir-148': 'windows-1254', 'iso8859-9': 'windows-1254', 'iso88599': 'windows-1254', 'iso_8859-9': 'windows-1254', 'iso_8859-9:1989': 'windows-1254', 'l5': 'windows-1254', 'latin5': 'windows-1254', 'windows-1254': 'windows-1254', 'x-cp1254': 'windows-1254', 'cp1255': 'windows-1255', 'windows-1255': 'windows-1255', 'x-cp1255': 'windows-1255', 'cp1256': 'windows-1256', 'windows-1256': 'windows-1256', 'x-cp1256': 'windows-1256', 'cp1257': 'windows-1257', 'windows-1257': 'windows-1257', 'x-cp1257': 'windows-1257', 'cp1258': 'windows-1258', 'windows-1258': 'windows-1258', 'x-cp1258': 'windows-1258', 'x-mac-cyrillic': 'x-mac-cyrillic', 'x-mac-ukrainian': 'x-mac-cyrillic', 'chinese': 'gbk', 'csgb2312': 'gbk', 'csiso58gb231280': 'gbk', 'gb2312': 'gbk', 'gb_2312': 'gbk', 'gb_2312-80': 'gbk', 'gbk': 'gbk', 'iso-ir-58': 'gbk', 'x-gbk': 'gbk', 'gb18030': 'gb18030', 'hz-gb-2312': 'hz-gb-2312', 'big5': 'big5', 'big5-hkscs': 'big5', 'cn-big5': 'big5', 'csbig5': 'big5', 'x-x-big5': 'big5', 'cseucpkdfmtjapanese': 'euc-jp', 'euc-jp': 'euc-jp', 'x-euc-jp': 'euc-jp', 'csiso2022jp': 'iso-2022-jp', 'iso-2022-jp': 'iso-2022-jp', 'csshiftjis': 'shift_jis', 'ms_kanji': 'shift_jis', 'shift-jis': 'shift_jis', 'shift_jis': 'shift_jis', 'sjis': 'shift_jis', 'windows-31j': 'shift_jis', 'x-sjis': 'shift_jis', 'cseuckr': 'euc-kr', 'csksc56011987': 'euc-kr', 'euc-kr': 'euc-kr', 'iso-ir-149': 'euc-kr', 'korean': 'euc-kr', 'ks_c_5601-1987': 'euc-kr', 'ks_c_5601-1989': 'euc-kr', 'ksc5601': 'euc-kr', 'ksc_5601': 'euc-kr', 'windows-949': 'euc-kr', 'csiso2022kr': 'iso-2022-kr', 'iso-2022-kr': 'iso-2022-kr', 'utf-16be': 'utf-16be', 'utf-16': 'utf-16le', 'utf-16le': 'utf-16le', 'x-user-defined': 'x-user-defined', }	8.77 KB	2026-01-07 23:39
📄 mklabels.py """ webencodings.mklabels ~~~~~~~~~~~~~~~~~~~~~ Regenarate the webencodings.labels module. :copyright: Copyright 2012 by Simon Sapin :license: BSD, see LICENSE for details. """ import json try: from urllib import urlopen except ImportError: from urllib.request import urlopen def assert_lower(string): assert string == string.lower() return string def generate(url): parts = ['''\ """ webencodings.labels ~~~~~~~~~~~~~~~~~~~ Map encoding labels to their name. :copyright: Copyright 2012 by Simon Sapin :license: BSD, see LICENSE for details. """ # XXX Do not edit! # This file is automatically generated by mklabels.py LABELS = { '''] labels = [ (repr(assert_lower(label)).lstrip('u'), repr(encoding['name']).lstrip('u')) for category in json.loads(urlopen(url).read().decode('ascii')) for encoding in category['encodings'] for label in encoding['labels']] max_len = max(len(label) for label, name in labels) parts.extend( ' %s:%s %s,\n' % (label, ' ' * (max_len - len(label)), name) for label, name in labels) parts.append('}') return ''.join(parts) if __name__ == '__main__': print(generate('http://encoding.spec.whatwg.org/encodings.json'))	1.27 KB	2026-01-07 23:39
📄 tests.py # coding: utf-8 """ webencodings.tests ~~~~~~~~~~~~~~~~~~ A basic test suite for Encoding. :copyright: Copyright 2012 by Simon Sapin :license: BSD, see LICENSE for details. """ from __future__ import unicode_literals from . import (lookup, LABELS, decode, encode, iter_decode, iter_encode, IncrementalDecoder, IncrementalEncoder, UTF8) def assert_raises(exception, function, args, kwargs): try: function(args, *kwargs) except exception: return else: # pragma: no cover raise AssertionError('Did not raise %s.' % exception) def test_labels(): assert lookup('utf-8').name == 'utf-8' assert lookup('Utf-8').name == 'utf-8' assert lookup('UTF-8').name == 'utf-8' assert lookup('utf8').name == 'utf-8' assert lookup('utf8').name == 'utf-8' assert lookup('utf8 ').name == 'utf-8' assert lookup(' \r\nutf8\t').name == 'utf-8' assert lookup('u8') is None # Python label. assert lookup('utf-8 ') is None # Non-ASCII white space. assert lookup('US-ASCII').name == 'windows-1252' assert lookup('iso-8859-1').name == 'windows-1252' assert lookup('latin1').name == 'windows-1252' assert lookup('LATIN1').name == 'windows-1252' assert lookup('latin-1') is None assert lookup('LATİN1') is None # ASCII-only case insensitivity. def test_all_labels(): for label in LABELS: assert decode(b'', label) == ('', lookup(label)) assert encode('', label) == b'' for repeat in [0, 1, 12]: output, _ = iter_decode([b''] repeat, label) assert list(output) == [] assert list(iter_encode([''] * repeat, label)) == [] decoder = IncrementalDecoder(label) assert decoder.decode(b'') == '' assert decoder.decode(b'', final=True) == '' encoder = IncrementalEncoder(label) assert encoder.encode('') == b'' assert encoder.encode('', final=True) == b'' # All encoding names are valid labels too: for name in set(LABELS.values()): assert lookup(name).name == name def test_invalid_label(): assert_raises(LookupError, decode, b'\xEF\xBB\xBF\xc3\xa9', 'invalid') assert_raises(LookupError, encode, 'é', 'invalid') assert_raises(LookupError, iter_decode, [], 'invalid') assert_raises(LookupError, iter_encode, [], 'invalid') assert_raises(LookupError, IncrementalDecoder, 'invalid') assert_raises(LookupError, IncrementalEncoder, 'invalid') def test_decode(): assert decode(b'\x80', 'latin1') == ('€', lookup('latin1')) assert decode(b'\x80', lookup('latin1')) == ('€', lookup('latin1')) assert decode(b'\xc3\xa9', 'utf8') == ('é', lookup('utf8')) assert decode(b'\xc3\xa9', UTF8) == ('é', lookup('utf8')) assert decode(b'\xc3\xa9', 'ascii') == ('Ã©', lookup('ascii')) assert decode(b'\xEF\xBB\xBF\xc3\xa9', 'ascii') == ('é', lookup('utf8')) # UTF-8 with BOM assert decode(b'\xFE\xFF\x00\xe9', 'ascii') == ('é', lookup('utf-16be')) # UTF-16-BE with BOM assert decode(b'\xFF\xFE\xe9\x00', 'ascii') == ('é', lookup('utf-16le')) # UTF-16-LE with BOM assert decode(b'\xFE\xFF\xe9\x00', 'ascii') == ('\ue900', lookup('utf-16be')) assert decode(b'\xFF\xFE\x00\xe9', 'ascii') == ('\ue900', lookup('utf-16le')) assert decode(b'\x00\xe9', 'UTF-16BE') == ('é', lookup('utf-16be')) assert decode(b'\xe9\x00', 'UTF-16LE') == ('é', lookup('utf-16le')) assert decode(b'\xe9\x00', 'UTF-16') == ('é', lookup('utf-16le')) assert decode(b'\xe9\x00', 'UTF-16BE') == ('\ue900', lookup('utf-16be')) assert decode(b'\x00\xe9', 'UTF-16LE') == ('\ue900', lookup('utf-16le')) assert decode(b'\x00\xe9', 'UTF-16') == ('\ue900', lookup('utf-16le')) def test_encode(): assert encode('é', 'latin1') == b'\xe9' assert encode('é', 'utf8') == b'\xc3\xa9' assert encode('é', 'utf8') == b'\xc3\xa9' assert encode('é', 'utf-16') == b'\xe9\x00' assert encode('é', 'utf-16le') == b'\xe9\x00' assert encode('é', 'utf-16be') == b'\x00\xe9' def test_iter_decode(): def iter_decode_to_string(input, fallback_encoding): output, _encoding = iter_decode(input, fallback_encoding) return ''.join(output) assert iter_decode_to_string([], 'latin1') == '' assert iter_decode_to_string([b''], 'latin1') == '' assert iter_decode_to_string([b'\xe9'], 'latin1') == 'é' assert iter_decode_to_string([b'hello'], 'latin1') == 'hello' assert iter_decode_to_string([b'he', b'llo'], 'latin1') == 'hello' assert iter_decode_to_string([b'hell', b'o'], 'latin1') == 'hello' assert iter_decode_to_string([b'\xc3\xa9'], 'latin1') == 'Ã©' assert iter_decode_to_string([b'\xEF\xBB\xBF\xc3\xa9'], 'latin1') == 'é' assert iter_decode_to_string([ b'\xEF\xBB\xBF', b'\xc3', b'\xa9'], 'latin1') == 'é' assert iter_decode_to_string([ b'\xEF\xBB\xBF', b'a', b'\xc3'], 'latin1') == 'a\uFFFD' assert iter_decode_to_string([ b'', b'\xEF', b'', b'', b'\xBB\xBF\xc3', b'\xa9'], 'latin1') == 'é' assert iter_decode_to_string([b'\xEF\xBB\xBF'], 'latin1') == '' assert iter_decode_to_string([b'\xEF\xBB'], 'latin1') == 'ï»' assert iter_decode_to_string([b'\xFE\xFF\x00\xe9'], 'latin1') == 'é' assert iter_decode_to_string([b'\xFF\xFE\xe9\x00'], 'latin1') == 'é' assert iter_decode_to_string([ b'', b'\xFF', b'', b'', b'\xFE\xe9', b'\x00'], 'latin1') == 'é' assert iter_decode_to_string([ b'', b'h\xe9', b'llo'], 'x-user-defined') == 'h\uF7E9llo' def test_iter_encode(): assert b''.join(iter_encode([], 'latin1')) == b'' assert b''.join(iter_encode([''], 'latin1')) == b'' assert b''.join(iter_encode(['é'], 'latin1')) == b'\xe9' assert b''.join(iter_encode(['', 'é', '', ''], 'latin1')) == b'\xe9' assert b''.join(iter_encode(['', 'é', '', ''], 'utf-16')) == b'\xe9\x00' assert b''.join(iter_encode(['', 'é', '', ''], 'utf-16le')) == b'\xe9\x00' assert b''.join(iter_encode(['', 'é', '', ''], 'utf-16be')) == b'\x00\xe9' assert b''.join(iter_encode([ '', 'h\uF7E9', '', 'llo'], 'x-user-defined')) == b'h\xe9llo' def test_x_user_defined(): encoded = b'2,\x0c\x0b\x1aO\xd9#\xcb\x0f\xc9\xbbt\xcf\xa8\xca' decoded = '2,\x0c\x0b\x1aO\uf7d9#\uf7cb\x0f\uf7c9\uf7bbt\uf7cf\uf7a8\uf7ca' encoded = b'aa' decoded = 'aa' assert decode(encoded, 'x-user-defined') == (decoded, lookup('x-user-defined')) assert encode(decoded, 'x-user-defined') == encoded	6.41 KB	2026-01-07 23:39
📄 x_user_defined.py # coding: utf-8 """ webencodings.x_user_defined ~~~~~~~~~~~~~~~~~~~~~~~~~~~ An implementation of the x-user-defined encoding. :copyright: Copyright 2012 by Simon Sapin :license: BSD, see LICENSE for details. """ from __future__ import unicode_literals import codecs ### Codec APIs class Codec(codecs.Codec): def encode(self, input, errors='strict'): return codecs.charmap_encode(input, errors, encoding_table) def decode(self, input, errors='strict'): return codecs.charmap_decode(input, errors, decoding_table) class IncrementalEncoder(codecs.IncrementalEncoder): def encode(self, input, final=False): return codecs.charmap_encode(input, self.errors, encoding_table)[0] class IncrementalDecoder(codecs.IncrementalDecoder): def decode(self, input, final=False): return codecs.charmap_decode(input, self.errors, decoding_table)[0] class StreamWriter(Codec, codecs.StreamWriter): pass class StreamReader(Codec, codecs.StreamReader): pass ### encodings module API codec_info = codecs.CodecInfo( name='x-user-defined', encode=Codec().encode, decode=Codec().decode, incrementalencoder=IncrementalEncoder, incrementaldecoder=IncrementalDecoder, streamreader=StreamReader, streamwriter=StreamWriter, ) ### Decoding Table # Python 3: # for c in range(256): print(' %r' % chr(c if c < 128 else c + 0xF700)) decoding_table = ( '\x00' '\x01' '\x02' '\x03' '\x04' '\x05' '\x06' '\x07' '\x08' '\t' '\n' '\x0b' '\x0c' '\r' '\x0e' '\x0f' '\x10' '\x11' '\x12' '\x13' '\x14' '\x15' '\x16' '\x17' '\x18' '\x19' '\x1a' '\x1b' '\x1c' '\x1d' '\x1e' '\x1f' ' ' '!' '"' '#' '$' '%' '&' "'" '(' ')' '*' '+' ',' '-' '.' '/' '0' '1' '2' '3' '4' '5' '6' '7' '8' '9' ':' ';' '<' '=' '>' '?' '@' 'A' 'B' 'C' 'D' 'E' 'F' 'G' 'H' 'I' 'J' 'K' 'L' 'M' 'N' 'O' 'P' 'Q' 'R' 'S' 'T' 'U' 'V' 'W' 'X' 'Y' 'Z' '[' '\\' ']' '^' '_' '`' 'a' 'b' 'c' 'd' 'e' 'f' 'g' 'h' 'i' 'j' 'k' 'l' 'm' 'n' 'o' 'p' 'q' 'r' 's' 't' 'u' 'v' 'w' 'x' 'y' 'z' '{' '\|' '}' '~' '\x7f' '\uf780' '\uf781' '\uf782' '\uf783' '\uf784' '\uf785' '\uf786' '\uf787' '\uf788' '\uf789' '\uf78a' '\uf78b' '\uf78c' '\uf78d' '\uf78e' '\uf78f' '\uf790' '\uf791' '\uf792' '\uf793' '\uf794' '\uf795' '\uf796' '\uf797' '\uf798' '\uf799' '\uf79a' '\uf79b' '\uf79c' '\uf79d' '\uf79e' '\uf79f' '\uf7a0' '\uf7a1' '\uf7a2' '\uf7a3' '\uf7a4' '\uf7a5' '\uf7a6' '\uf7a7' '\uf7a8' '\uf7a9' '\uf7aa' '\uf7ab' '\uf7ac' '\uf7ad' '\uf7ae' '\uf7af' '\uf7b0' '\uf7b1' '\uf7b2' '\uf7b3' '\uf7b4' '\uf7b5' '\uf7b6' '\uf7b7' '\uf7b8' '\uf7b9' '\uf7ba' '\uf7bb' '\uf7bc' '\uf7bd' '\uf7be' '\uf7bf' '\uf7c0' '\uf7c1' '\uf7c2' '\uf7c3' '\uf7c4' '\uf7c5' '\uf7c6' '\uf7c7' '\uf7c8' '\uf7c9' '\uf7ca' '\uf7cb' '\uf7cc' '\uf7cd' '\uf7ce' '\uf7cf' '\uf7d0' '\uf7d1' '\uf7d2' '\uf7d3' '\uf7d4' '\uf7d5' '\uf7d6' '\uf7d7' '\uf7d8' '\uf7d9' '\uf7da' '\uf7db' '\uf7dc' '\uf7dd' '\uf7de' '\uf7df' '\uf7e0' '\uf7e1' '\uf7e2' '\uf7e3' '\uf7e4' '\uf7e5' '\uf7e6' '\uf7e7' '\uf7e8' '\uf7e9' '\uf7ea' '\uf7eb' '\uf7ec' '\uf7ed' '\uf7ee' '\uf7ef' '\uf7f0' '\uf7f1' '\uf7f2' '\uf7f3' '\uf7f4' '\uf7f5' '\uf7f6' '\uf7f7' '\uf7f8' '\uf7f9' '\uf7fa' '\uf7fb' '\uf7fc' '\uf7fd' '\uf7fe' '\uf7ff' ) ### Encoding table encoding_table = codecs.charmap_build(decoding_table)	4.21 KB	2026-01-07 23:39

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