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Name	Size	Permission	Date
__pycache__	[ DIR ]	drwxr-xr-x	2025-09-09 19:28
__init__.py	5.46 KB	-rw-r--r--	2024-12-03 17:50
aliases.py	15.31 KB	-rw-r--r--	2024-12-03 17:50
ascii.py	1.22 KB	-rw-r--r--	2024-12-03 17:50
base64_codec.py	1.5 KB	-rw-r--r--	2024-12-03 17:50
big5.py	1019 B	-rw-r--r--	2024-12-03 17:50
big5hkscs.py	1.01 KB	-rw-r--r--	2024-12-03 17:50
bz2_codec.py	2.2 KB	-rw-r--r--	2024-12-03 17:50
charmap.py	2.04 KB	-rw-r--r--	2024-12-03 17:50
cp037.pyc	2.37 KB	-rw-r--r--	2025-09-02 07:04
cp1006.pyc	2.44 KB	-rw-r--r--	2025-09-02 07:04
cp1026.pyc	2.37 KB	-rw-r--r--	2025-09-02 07:04
cp1125.py	33.79 KB	-rw-r--r--	2024-12-03 17:50
cp1140.pyc	2.36 KB	-rw-r--r--	2025-09-02 07:04
cp1250.pyc	2.39 KB	-rw-r--r--	2025-09-02 07:04
cp1251.pyc	2.39 KB	-rw-r--r--	2025-09-02 07:04
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cp1253.pyc	2.41 KB	-rw-r--r--	2025-09-02 07:04
cp1254.pyc	2.4 KB	-rw-r--r--	2025-09-02 07:04
cp1255.pyc	2.41 KB	-rw-r--r--	2025-09-02 07:04
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cp1258.pyc	2.4 KB	-rw-r--r--	2025-09-02 07:04
cp273.pyc	2.35 KB	-rw-r--r--	2025-09-02 07:04
cp424.pyc	2.4 KB	-rw-r--r--	2025-09-02 07:04
cp437.pyc	7.66 KB	-rw-r--r--	2025-09-02 07:04
cp500.pyc	2.37 KB	-rw-r--r--	2025-09-02 07:04
cp720.py	13.37 KB	-rw-r--r--	2024-12-03 17:50
cp737.pyc	7.98 KB	-rw-r--r--	2025-09-02 07:04
cp775.pyc	7.69 KB	-rw-r--r--	2025-09-02 07:04
cp850.pyc	7.33 KB	-rw-r--r--	2025-09-02 07:04
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cp856.pyc	2.43 KB	-rw-r--r--	2025-09-02 07:04
cp857.pyc	7.31 KB	-rw-r--r--	2025-09-02 07:04
cp858.py	33.22 KB	-rw-r--r--	2024-12-03 17:50
cp860.pyc	7.64 KB	-rw-r--r--	2025-09-02 07:04
cp861.pyc	7.66 KB	-rw-r--r--	2025-09-02 07:04
cp862.pyc	7.84 KB	-rw-r--r--	2025-09-02 07:04
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cp864.pyc	7.8 KB	-rw-r--r--	2025-09-02 07:04
cp865.pyc	7.66 KB	-rw-r--r--	2025-09-02 07:04
cp866.pyc	7.98 KB	-rw-r--r--	2025-09-02 07:04
cp869.pyc	7.68 KB	-rw-r--r--	2025-09-02 07:04
cp874.pyc	2.49 KB	-rw-r--r--	2025-09-02 07:04
cp875.pyc	2.36 KB	-rw-r--r--	2025-09-02 07:04
cp932.py	1023 B	-rw-r--r--	2024-12-03 17:50
cp949.py	1023 B	-rw-r--r--	2024-12-03 17:50
cp950.py	1023 B	-rw-r--r--	2024-12-03 17:50
euc_jis_2004.py	1.03 KB	-rw-r--r--	2024-12-03 17:50
euc_jisx0213.py	1.03 KB	-rw-r--r--	2024-12-03 17:50
euc_jp.py	1 KB	-rw-r--r--	2024-12-03 17:50
euc_kr.py	1 KB	-rw-r--r--	2024-12-03 17:50
gb18030.py	1.01 KB	-rw-r--r--	2024-12-03 17:50
gb2312.py	1 KB	-rw-r--r--	2024-12-03 17:50
gbk.py	1015 B	-rw-r--r--	2024-12-03 17:50
hex_codec.py	1.47 KB	-rw-r--r--	2024-12-03 17:50
hp_roman8.pyc	2.56 KB	-rw-r--r--	2025-09-02 07:04
hz.py	1011 B	-rw-r--r--	2024-12-03 17:50
idna.py	8.88 KB	-rw-r--r--	2024-12-03 17:50
iso2022_jp.py	1.03 KB	-rw-r--r--	2024-12-03 17:50
iso2022_jp_1.py	1.04 KB	-rw-r--r--	2024-12-03 17:50
iso2022_jp_2.py	1.04 KB	-rw-r--r--	2024-12-03 17:50
iso2022_jp_2004.py	1.05 KB	-rw-r--r--	2024-12-03 17:50
iso2022_jp_3.py	1.04 KB	-rw-r--r--	2024-12-03 17:50
iso2022_jp_ext.py	1.04 KB	-rw-r--r--	2024-12-03 17:50
iso2022_kr.py	1.03 KB	-rw-r--r--	2024-12-03 17:50
iso8859_1.pyc	2.37 KB	-rw-r--r--	2025-09-02 07:04
iso8859_10.pyc	2.37 KB	-rw-r--r--	2025-09-02 07:04
iso8859_11.pyc	2.46 KB	-rw-r--r--	2025-09-02 07:04
iso8859_13.pyc	2.37 KB	-rw-r--r--	2025-09-02 07:04
iso8859_14.pyc	2.39 KB	-rw-r--r--	2025-09-02 07:04
iso8859_15.pyc	2.37 KB	-rw-r--r--	2025-09-02 07:04
iso8859_16.pyc	2.37 KB	-rw-r--r--	2025-09-02 07:04
iso8859_2.pyc	2.37 KB	-rw-r--r--	2025-09-02 07:04
iso8859_3.pyc	2.37 KB	-rw-r--r--	2025-09-02 07:04
iso8859_4.pyc	2.37 KB	-rw-r--r--	2025-09-02 07:04
iso8859_5.pyc	2.37 KB	-rw-r--r--	2025-09-02 07:04
iso8859_6.pyc	2.41 KB	-rw-r--r--	2025-09-02 07:04
iso8859_7.pyc	2.37 KB	-rw-r--r--	2025-09-02 07:04
iso8859_8.pyc	2.4 KB	-rw-r--r--	2025-09-02 07:04
iso8859_9.pyc	2.37 KB	-rw-r--r--	2025-09-02 07:04
johab.py	1023 B	-rw-r--r--	2024-12-03 17:50
koi8_r.pyc	2.42 KB	-rw-r--r--	2025-09-02 07:04
koi8_t.py	12.88 KB	-rw-r--r--	2024-12-03 17:50
koi8_u.pyc	2.4 KB	-rw-r--r--	2025-09-02 07:04
kz1048.pyc	2.38 KB	-rw-r--r--	2025-09-02 07:04
latin_1.py	1.23 KB	-rw-r--r--	2024-12-03 17:50
mac_arabic.pyc	7.56 KB	-rw-r--r--	2025-09-02 07:04
mac_croatian.pyc	2.41 KB	-rw-r--r--	2025-09-02 07:04
mac_cyrillic.pyc	2.4 KB	-rw-r--r--	2025-09-02 07:04
mac_farsi.pyc	2.35 KB	-rw-r--r--	2025-09-02 07:04
mac_greek.pyc	2.39 KB	-rw-r--r--	2025-09-02 07:04
mac_iceland.pyc	2.41 KB	-rw-r--r--	2025-09-02 07:04
mac_latin2.pyc	2.54 KB	-rw-r--r--	2025-09-02 07:04
mac_roman.pyc	2.4 KB	-rw-r--r--	2025-09-02 07:04
mac_romanian.pyc	2.41 KB	-rw-r--r--	2025-09-02 07:04
mac_turkish.pyc	2.41 KB	-rw-r--r--	2025-09-02 07:04
mbcs.py	1.18 KB	-rw-r--r--	2024-12-03 17:50
oem.py	1019 B	-rw-r--r--	2024-12-03 17:50
palmos.py	13.2 KB	-rw-r--r--	2024-12-03 17:50
ptcp154.pyc	2.49 KB	-rw-r--r--	2025-09-02 07:04
punycode.py	6.72 KB	-rw-r--r--	2024-12-03 17:50
quopri_codec.py	1.49 KB	-rw-r--r--	2024-12-03 17:50
raw_unicode_escape.py	1.3 KB	-rw-r--r--	2024-12-03 17:50
rot_13.py	2.39 KB	-rwxr-xr-x	2024-12-03 17:50
shift_jis.py	1.01 KB	-rw-r--r--	2024-12-03 17:50
shift_jis_2004.py	1.03 KB	-rw-r--r--	2024-12-03 17:50
shift_jisx0213.py	1.03 KB	-rw-r--r--	2024-12-03 17:50
tis_620.pyc	2.45 KB	-rw-r--r--	2025-09-02 07:04
undefined.py	1.27 KB	-rw-r--r--	2024-12-03 17:50
unicode_escape.py	1.27 KB	-rw-r--r--	2024-12-03 17:50
utf_16.py	5.11 KB	-rw-r--r--	2024-12-03 17:50
utf_16_be.py	1.01 KB	-rw-r--r--	2024-12-03 17:50
utf_16_le.py	1.01 KB	-rw-r--r--	2024-12-03 17:50
utf_32.py	5.01 KB	-rw-r--r--	2024-12-03 17:50
utf_32_be.py	930 B	-rw-r--r--	2024-12-03 17:50
utf_32_le.py	930 B	-rw-r--r--	2024-12-03 17:50
utf_7.py	946 B	-rw-r--r--	2024-12-03 17:50
utf_8.py	1005 B	-rw-r--r--	2024-12-03 17:50
utf_8_sig.py	4.04 KB	-rw-r--r--	2024-12-03 17:50
uu_codec.py	2.78 KB	-rw-r--r--	2024-12-03 17:50
zlib_codec.py	2.15 KB	-rw-r--r--	2024-12-03 17:50

Rename

# This module implements the RFCs 3490 (IDNA) and 3491 (Nameprep)

import stringprep, re, codecs
from unicodedata import ucd_3_2_0 as unicodedata

# IDNA section 3.1
dots = re.compile("[\u002E\u3002\uFF0E\uFF61]")

# IDNA section 5
ace_prefix = b"xn--"
sace_prefix = "xn--"

# This assumes query strings, so AllowUnassigned is true
def nameprep(label):
    # Map
    newlabel = []
    for c in label:
        if stringprep.in_table_b1(c):
            # Map to nothing
            continue
        newlabel.append(stringprep.map_table_b2(c))
    label = "".join(newlabel)

# Normalize
    label = unicodedata.normalize("NFKC", label)

# Prohibit
    for c in label:
        if stringprep.in_table_c12(c) or \
           stringprep.in_table_c22(c) or \
           stringprep.in_table_c3(c) or \
           stringprep.in_table_c4(c) or \
           stringprep.in_table_c5(c) or \
           stringprep.in_table_c6(c) or \
           stringprep.in_table_c7(c) or \
           stringprep.in_table_c8(c) or \
           stringprep.in_table_c9(c):
            raise UnicodeError("Invalid character %r" % c)

# Check bidi
    RandAL = [stringprep.in_table_d1(x) for x in label]
    if any(RandAL):
        # There is a RandAL char in the string. Must perform further
        # tests:
        # 1) The characters in section 5.8 MUST be prohibited.
        # This is table C.8, which was already checked
        # 2) If a string contains any RandALCat character, the string
        # MUST NOT contain any LCat character.
        if any(stringprep.in_table_d2(x) for x in label):
            raise UnicodeError("Violation of BIDI requirement 2")
        # 3) If a string contains any RandALCat character, a
        # RandALCat character MUST be the first character of the
        # string, and a RandALCat character MUST be the last
        # character of the string.
        if not RandAL[0] or not RandAL[-1]:
            raise UnicodeError("Violation of BIDI requirement 3")

return label

def ToASCII(label):
    try:
        # Step 1: try ASCII
        label = label.encode("ascii")
    except UnicodeError:
        pass
    else:
        # Skip to step 3: UseSTD3ASCIIRules is false, so
        # Skip to step 8.
        if 0 < len(label) < 64:
            return label
        raise UnicodeError("label empty or too long")

# Step 2: nameprep
    label = nameprep(label)

# Step 3: UseSTD3ASCIIRules is false
    # Step 4: try ASCII
    try:
        label = label.encode("ascii")
    except UnicodeError:
        pass
    else:
        # Skip to step 8.
        if 0 < len(label) < 64:
            return label
        raise UnicodeError("label empty or too long")

# Step 5: Check ACE prefix
    if label.startswith(sace_prefix):
        raise UnicodeError("Label starts with ACE prefix")

# Step 6: Encode with PUNYCODE
    label = label.encode("punycode")

# Step 7: Prepend ACE prefix
    label = ace_prefix + label

# Step 8: Check size
    if 0 < len(label) < 64:
        return label
    raise UnicodeError("label empty or too long")

def ToUnicode(label):
    # Step 1: Check for ASCII
    if isinstance(label, bytes):
        pure_ascii = True
    else:
        try:
            label = label.encode("ascii")
            pure_ascii = True
        except UnicodeError:
            pure_ascii = False
    if not pure_ascii:
        # Step 2: Perform nameprep
        label = nameprep(label)
        # It doesn't say this, but apparently, it should be ASCII now
        try:
            label = label.encode("ascii")
        except UnicodeError:
            raise UnicodeError("Invalid character in IDN label")
    # Step 3: Check for ACE prefix
    if not label.startswith(ace_prefix):
        return str(label, "ascii")

# Step 4: Remove ACE prefix
    label1 = label[len(ace_prefix):]

# Step 5: Decode using PUNYCODE
    result = label1.decode("punycode")

# Step 6: Apply ToASCII
    label2 = ToASCII(result)

# Step 7: Compare the result of step 6 with the one of step 3
    # label2 will already be in lower case.
    if str(label, "ascii").lower() != str(label2, "ascii"):
        raise UnicodeError("IDNA does not round-trip", label, label2)

# Step 8: return the result of step 5
    return result

### Codec APIs

class Codec(codecs.Codec):
    def encode(self, input, errors='strict'):

if errors != 'strict':
            # IDNA is quite clear that implementations must be strict
            raise UnicodeError("unsupported error handling "+errors)

if not input:
            return b'', 0

try:
            result = input.encode('ascii')
        except UnicodeEncodeError:
            pass
        else:
            # ASCII name: fast path
            labels = result.split(b'.')
            for label in labels[:-1]:
                if not (0 < len(label) < 64):
                    raise UnicodeError("label empty or too long")
            if len(labels[-1]) >= 64:
                raise UnicodeError("label too long")
            return result, len(input)

result = bytearray()
        labels = dots.split(input)
        if labels and not labels[-1]:
            trailing_dot = b'.'
            del labels[-1]
        else:
            trailing_dot = b''
        for label in labels:
            if result:
                # Join with U+002E
                result.extend(b'.')
            result.extend(ToASCII(label))
        return bytes(result+trailing_dot), len(input)

def decode(self, input, errors='strict'):

if errors != 'strict':
            raise UnicodeError("Unsupported error handling "+errors)

if not input:
            return "", 0

# IDNA allows decoding to operate on Unicode strings, too.
        if not isinstance(input, bytes):
            # XXX obviously wrong, see #3232
            input = bytes(input)

if ace_prefix not in input:
            # Fast path
            try:
                return input.decode('ascii'), len(input)
            except UnicodeDecodeError:
                pass

labels = input.split(b".")

if labels and len(labels[-1]) == 0:
            trailing_dot = '.'
            del labels[-1]
        else:
            trailing_dot = ''

result = []
        for label in labels:
            result.append(ToUnicode(label))

return ".".join(result)+trailing_dot, len(input)

class IncrementalEncoder(codecs.BufferedIncrementalEncoder):
    def _buffer_encode(self, input, errors, final):
        if errors != 'strict':
            # IDNA is quite clear that implementations must be strict
            raise UnicodeError("unsupported error handling "+errors)

if not input:
            return (b'', 0)

labels = dots.split(input)
        trailing_dot = b''
        if labels:
            if not labels[-1]:
                trailing_dot = b'.'
                del labels[-1]
            elif not final:
                # Keep potentially unfinished label until the next call
                del labels[-1]
                if labels:
                    trailing_dot = b'.'

result = bytearray()
        size = 0
        for label in labels:
            if size:
                # Join with U+002E
                result.extend(b'.')
                size += 1
            result.extend(ToASCII(label))
            size += len(label)

result += trailing_dot
        size += len(trailing_dot)
        return (bytes(result), size)

class IncrementalDecoder(codecs.BufferedIncrementalDecoder):
    def _buffer_decode(self, input, errors, final):
        if errors != 'strict':
            raise UnicodeError("Unsupported error handling "+errors)

if not input:
            return ("", 0)

# IDNA allows decoding to operate on Unicode strings, too.
        if isinstance(input, str):
            labels = dots.split(input)
        else:
            # Must be ASCII string
            input = str(input, "ascii")
            labels = input.split(".")

trailing_dot = ''
        if labels:
            if not labels[-1]:
                trailing_dot = '.'
                del labels[-1]
            elif not final:
                # Keep potentially unfinished label until the next call
                del labels[-1]
                if labels:
                    trailing_dot = '.'

result = []
        size = 0
        for label in labels:
            result.append(ToUnicode(label))
            if size:
                size += 1
            size += len(label)

result = ".".join(result) + trailing_dot
        size += len(trailing_dot)
        return (result, size)

class StreamWriter(Codec,codecs.StreamWriter):
    pass

class StreamReader(Codec,codecs.StreamReader):
    pass

### encodings module API

def getregentry():
    return codecs.CodecInfo(
        name='idna',
        encode=Codec().encode,
        decode=Codec().decode,
        incrementalencoder=IncrementalEncoder,
        incrementaldecoder=IncrementalDecoder,
        streamwriter=StreamWriter,
        streamreader=StreamReader,
    )