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Name	Size	Permission	Date
__pycache__	[ DIR ]	drwxr-xr-x	2025-03-31 10:37
__init__.py	5.75 KB	-rw-r--r--	2025-03-04 12:23
aliases.py	15.34 KB	-rw-r--r--	2025-03-04 12:23
ascii.py	1.22 KB	-rw-r--r--	2025-03-04 12:23
base64_codec.py	1.5 KB	-rw-r--r--	2025-03-04 12:23
big5.py	1019 B	-rw-r--r--	2025-03-04 12:23
big5hkscs.py	1.01 KB	-rw-r--r--	2025-03-04 12:23
bz2_codec.py	2.2 KB	-rw-r--r--	2025-03-04 12:23
charmap.py	2.04 KB	-rw-r--r--	2025-03-04 12:23
cp037.py	12.81 KB	-rw-r--r--	2025-03-04 12:23
cp1006.py	13.25 KB	-rw-r--r--	2025-03-04 12:23
cp1026.py	12.81 KB	-rw-r--r--	2025-03-04 12:23
cp1125.py	33.79 KB	-rw-r--r--	2025-03-04 12:23
cp1140.py	12.8 KB	-rw-r--r--	2025-03-04 12:23
cp1250.py	13.37 KB	-rw-r--r--	2025-03-04 12:23
cp1251.py	13.05 KB	-rw-r--r--	2025-03-04 12:23
cp1252.py	13.19 KB	-rw-r--r--	2025-03-04 12:23
cp1253.py	12.79 KB	-rw-r--r--	2025-03-04 12:23
cp1254.py	13.19 KB	-rw-r--r--	2025-03-04 12:23
cp1255.py	12.17 KB	-rw-r--r--	2025-03-04 12:23
cp1256.py	12.51 KB	-rw-r--r--	2025-03-04 12:23
cp1257.py	13.06 KB	-rw-r--r--	2025-03-04 12:23
cp1258.py	13.05 KB	-rw-r--r--	2025-03-04 12:23
cp273.py	13.8 KB	-rw-r--r--	2025-03-04 12:23
cp424.py	11.77 KB	-rw-r--r--	2025-03-04 12:23
cp437.py	33.75 KB	-rw-r--r--	2025-03-04 12:23
cp500.py	12.81 KB	-rw-r--r--	2025-03-04 12:23
cp720.py	13.37 KB	-rw-r--r--	2025-03-04 12:23
cp737.py	33.87 KB	-rw-r--r--	2025-03-04 12:23
cp775.py	33.67 KB	-rw-r--r--	2025-03-04 12:23
cp850.py	33.31 KB	-rw-r--r--	2025-03-04 12:23
cp852.py	34.18 KB	-rw-r--r--	2025-03-04 12:23
cp855.py	33.06 KB	-rw-r--r--	2025-03-04 12:23
cp856.py	12.13 KB	-rw-r--r--	2025-03-04 12:23
cp857.py	33.11 KB	-rw-r--r--	2025-03-04 12:23
cp858.py	33.22 KB	-rw-r--r--	2025-03-04 12:23
cp860.py	33.87 KB	-rw-r--r--	2025-03-04 12:23
cp861.py	33.82 KB	-rw-r--r--	2025-03-04 12:23
cp862.py	32.59 KB	-rw-r--r--	2025-03-04 12:23
cp863.py	33.45 KB	-rw-r--r--	2025-03-04 12:23
cp864.py	32.87 KB	-rw-r--r--	2025-03-04 12:23
cp865.py	33.81 KB	-rw-r--r--	2025-03-04 12:23
cp866.py	33.59 KB	-rw-r--r--	2025-03-04 12:23
cp869.py	32.19 KB	-rw-r--r--	2025-03-04 12:23
cp874.py	12.3 KB	-rw-r--r--	2025-03-04 12:23
cp875.py	12.55 KB	-rw-r--r--	2025-03-04 12:23
cp932.py	1023 B	-rw-r--r--	2025-03-04 12:23
cp949.py	1023 B	-rw-r--r--	2025-03-04 12:23
cp950.py	1023 B	-rw-r--r--	2025-03-04 12:23
euc_jis_2004.py	1.03 KB	-rw-r--r--	2025-03-04 12:23
euc_jisx0213.py	1.03 KB	-rw-r--r--	2025-03-04 12:23
euc_jp.py	1 KB	-rw-r--r--	2025-03-04 12:23
euc_kr.py	1 KB	-rw-r--r--	2025-03-04 12:23
gb18030.py	1.01 KB	-rw-r--r--	2025-03-04 12:23
gb2312.py	1 KB	-rw-r--r--	2025-03-04 12:23
gbk.py	1015 B	-rw-r--r--	2025-03-04 12:23
hex_codec.py	1.47 KB	-rw-r--r--	2025-03-04 12:23
hp_roman8.py	13.16 KB	-rw-r--r--	2025-03-04 12:23
hz.py	1011 B	-rw-r--r--	2025-03-04 12:23
idna.py	12.94 KB	-rw-r--r--	2025-03-04 12:23
iso2022_jp.py	1.03 KB	-rw-r--r--	2025-03-04 12:23
iso2022_jp_1.py	1.04 KB	-rw-r--r--	2025-03-04 12:23
iso2022_jp_2.py	1.04 KB	-rw-r--r--	2025-03-04 12:23
iso2022_jp_2004.py	1.05 KB	-rw-r--r--	2025-03-04 12:23
iso2022_jp_3.py	1.04 KB	-rw-r--r--	2025-03-04 12:23
iso2022_jp_ext.py	1.04 KB	-rw-r--r--	2025-03-04 12:23
iso2022_kr.py	1.03 KB	-rw-r--r--	2025-03-04 12:23
iso8859_1.py	12.87 KB	-rw-r--r--	2025-03-04 12:23
iso8859_10.py	13.27 KB	-rw-r--r--	2025-03-04 12:23
iso8859_11.py	12.05 KB	-rw-r--r--	2025-03-04 12:23
iso8859_13.py	12.96 KB	-rw-r--r--	2025-03-04 12:23
iso8859_14.py	13.33 KB	-rw-r--r--	2025-03-04 12:23
iso8859_15.py	12.9 KB	-rw-r--r--	2025-03-04 12:23
iso8859_16.py	13.24 KB	-rw-r--r--	2025-03-04 12:23
iso8859_2.py	13.09 KB	-rw-r--r--	2025-03-04 12:23
iso8859_3.py	12.78 KB	-rw-r--r--	2025-03-04 12:23
iso8859_4.py	13.06 KB	-rw-r--r--	2025-03-04 12:23
iso8859_5.py	12.71 KB	-rw-r--r--	2025-03-04 12:23
iso8859_6.py	10.58 KB	-rw-r--r--	2025-03-04 12:23
iso8859_7.py	12.54 KB	-rw-r--r--	2025-03-04 12:23
iso8859_8.py	10.78 KB	-rw-r--r--	2025-03-04 12:23
iso8859_9.py	12.85 KB	-rw-r--r--	2025-03-04 12:23
johab.py	1023 B	-rw-r--r--	2025-03-04 12:23
koi8_r.py	13.46 KB	-rw-r--r--	2025-03-04 12:23
koi8_t.py	12.88 KB	-rw-r--r--	2025-03-04 12:23
koi8_u.py	13.44 KB	-rw-r--r--	2025-03-04 12:23
kz1048.py	13.4 KB	-rw-r--r--	2025-03-04 12:23
latin_1.py	1.23 KB	-rw-r--r--	2025-03-04 12:23
mac_arabic.py	35.61 KB	-rw-r--r--	2025-03-04 12:23
mac_croatian.py	13.31 KB	-rw-r--r--	2025-03-04 12:23
mac_cyrillic.py	13.14 KB	-rw-r--r--	2025-03-04 12:23
mac_farsi.py	14.81 KB	-rw-r--r--	2025-03-04 12:23
mac_greek.py	13.4 KB	-rw-r--r--	2025-03-04 12:23
mac_iceland.py	13.18 KB	-rw-r--r--	2025-03-04 12:23
mac_latin2.py	13.79 KB	-rw-r--r--	2025-03-04 12:23
mac_roman.py	13.16 KB	-rw-r--r--	2025-03-04 12:23
mac_romanian.py	13.34 KB	-rw-r--r--	2025-03-04 12:23
mac_turkish.py	13.2 KB	-rw-r--r--	2025-03-04 12:23
mbcs.py	1.18 KB	-rw-r--r--	2025-03-04 12:23
oem.py	1019 B	-rw-r--r--	2025-03-04 12:23
palmos.py	13.2 KB	-rw-r--r--	2025-03-04 12:23
ptcp154.py	13.69 KB	-rw-r--r--	2025-03-04 12:23
punycode.py	7.45 KB	-rw-r--r--	2025-03-04 12:23
quopri_codec.py	1.49 KB	-rw-r--r--	2025-03-04 12:23
raw_unicode_escape.py	1.3 KB	-rw-r--r--	2025-03-04 12:23
rot_13.py	2.41 KB	-rwxr-xr-x	2025-03-04 12:23
shift_jis.py	1.01 KB	-rw-r--r--	2025-03-04 12:23
shift_jis_2004.py	1.03 KB	-rw-r--r--	2025-03-04 12:23
shift_jisx0213.py	1.03 KB	-rw-r--r--	2025-03-04 12:23
tis_620.py	12.01 KB	-rw-r--r--	2025-03-04 12:23
undefined.py	1.27 KB	-rw-r--r--	2025-03-04 12:23
unicode_escape.py	1.27 KB	-rw-r--r--	2025-03-04 12:23
utf_16.py	5.16 KB	-rw-r--r--	2025-03-04 12:23
utf_16_be.py	1.01 KB	-rw-r--r--	2025-03-04 12:23
utf_16_le.py	1.01 KB	-rw-r--r--	2025-03-04 12:23
utf_32.py	5.05 KB	-rw-r--r--	2025-03-04 12:23
utf_32_be.py	930 B	-rw-r--r--	2025-03-04 12:23
utf_32_le.py	930 B	-rw-r--r--	2025-03-04 12:23
utf_7.py	946 B	-rw-r--r--	2025-03-04 12:23
utf_8.py	1005 B	-rw-r--r--	2025-03-04 12:23
utf_8_sig.py	4.04 KB	-rw-r--r--	2025-03-04 12:23
uu_codec.py	2.78 KB	-rw-r--r--	2025-03-04 12:23
zlib_codec.py	2.15 KB	-rw-r--r--	2025-03-04 12:23

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):  # type: (str) -> str
    # 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 i, c in enumerate(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 UnicodeEncodeError("idna", label, i, i+1, f"Invalid character {c!r}")

# 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.
        for i, x in enumerate(label):
            if stringprep.in_table_d2(x):
                raise UnicodeEncodeError("idna", label, i, i+1,
                                         "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]:
            raise UnicodeEncodeError("idna", label, 0, 1,
                                     "Violation of BIDI requirement 3")
        if not RandAL[-1]:
            raise UnicodeEncodeError("idna", label, len(label)-1, len(label),
                                     "Violation of BIDI requirement 3")

return label

def ToASCII(label):  # type: (str) -> bytes
    try:
        # Step 1: try ASCII
        label_ascii = label.encode("ascii")
    except UnicodeEncodeError:
        pass
    else:
        # Skip to step 3: UseSTD3ASCIIRules is false, so
        # Skip to step 8.
        if 0 < len(label_ascii) < 64:
            return label_ascii
        if len(label) == 0:
            raise UnicodeEncodeError("idna", label, 0, 1, "label empty")
        else:
            raise UnicodeEncodeError("idna", label, 0, len(label), "label too long")

# Step 2: nameprep
    label = nameprep(label)

# Step 3: UseSTD3ASCIIRules is false
    # Step 4: try ASCII
    try:
        label_ascii = label.encode("ascii")
    except UnicodeEncodeError:
        pass
    else:
        # Skip to step 8.
        if 0 < len(label) < 64:
            return label_ascii
        if len(label) == 0:
            raise UnicodeEncodeError("idna", label, 0, 1, "label empty")
        else:
            raise UnicodeEncodeError("idna", label, 0, len(label), "label too long")

# Step 5: Check ACE prefix
    if label.lower().startswith(sace_prefix):
        raise UnicodeEncodeError(
            "idna", label, 0, len(sace_prefix), "Label starts with ACE prefix")

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

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

# Step 8: Check size
    # do not check for empty as we prepend ace_prefix.
    if len(label_ascii) < 64:
        return label_ascii
    raise UnicodeEncodeError("idna", label, 0, len(label), "label too long")

def ToUnicode(label):
    if len(label) > 1024:
        # Protection from https://github.com/python/cpython/issues/98433.
        # https://datatracker.ietf.org/doc/html/rfc5894#section-6
        # doesn't specify a label size limit prior to NAMEPREP. But having
        # one makes practical sense.
        # This leaves ample room for nameprep() to remove Nothing characters
        # per https://www.rfc-editor.org/rfc/rfc3454#section-3.1 while still
        # preventing us from wasting time decoding a big thing that'll just
        # hit the actual <= 63 length limit in Step 6.
        if isinstance(label, str):
            label = label.encode("utf-8", errors="backslashreplace")
        raise UnicodeDecodeError("idna", label, 0, len(label), "label way too long")
    # Step 1: Check for ASCII
    if isinstance(label, bytes):
        pure_ascii = True
    else:
        try:
            label = label.encode("ascii")
            pure_ascii = True
        except UnicodeEncodeError:
            pure_ascii = False
    if not pure_ascii:
        assert isinstance(label, str)
        # 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 UnicodeEncodeError as exc:
            raise UnicodeEncodeError("idna", label, exc.start, exc.end,
                                     "Invalid character in IDN label")
    # Step 3: Check for ACE prefix
    assert isinstance(label, bytes)
    if not label.lower().startswith(ace_prefix):
        return str(label, "ascii")

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

# Step 5: Decode using PUNYCODE
    try:
        result = label1.decode("punycode")
    except UnicodeDecodeError as exc:
        offset = len(ace_prefix)
        raise UnicodeDecodeError("idna", label, offset+exc.start, offset+exc.end, exc.reason)

# 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 UnicodeDecodeError("idna", label, 0, len(label),
                                 f"IDNA does not round-trip, '{label!r}' != '{label2!r}'")

# 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(f"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 i, label in enumerate(labels[:-1]):
                if len(label) == 0:
                    offset = sum(len(l) for l in labels[:i]) + i
                    raise UnicodeEncodeError("idna", input, offset, offset+1,
                                             "label empty")
            for i, label in enumerate(labels):
                if len(label) >= 64:
                    offset = sum(len(l) for l in labels[:i]) + i
                    raise UnicodeEncodeError("idna", input, offset, offset+len(label),
                                             "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 i, label in enumerate(labels):
            if result:
                # Join with U+002E
                result.extend(b'.')
            try:
                result.extend(ToASCII(label))
            except (UnicodeEncodeError, UnicodeDecodeError) as exc:
                offset = sum(len(l) for l in labels[:i]) + i
                raise UnicodeEncodeError(
                    "idna",
                    input,
                    offset + exc.start,
                    offset + exc.end,
                    exc.reason,
                )
        return bytes(result+trailing_dot), len(input)

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

if errors != 'strict':
            raise UnicodeError(f"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.lower():
            # 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 i, label in enumerate(labels):
            try:
                u_label = ToUnicode(label)
            except (UnicodeEncodeError, UnicodeDecodeError) as exc:
                offset = sum(len(x) for x in labels[:i]) + len(labels[:i])
                raise UnicodeDecodeError(
                    "idna", input, offset+exc.start, offset+exc.end, exc.reason)
            else:
                result.append(u_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(f"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
            try:
                result.extend(ToASCII(label))
            except (UnicodeEncodeError, UnicodeDecodeError) as exc:
                raise UnicodeEncodeError(
                    "idna",
                    input,
                    size + exc.start,
                    size + exc.end,
                    exc.reason,
                )
            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
            try:
                input = str(input, "ascii")
            except (UnicodeEncodeError, UnicodeDecodeError) as exc:
                raise UnicodeDecodeError("idna", input,
                                         exc.start, exc.end, exc.reason)
            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:
            try:
                u_label = ToUnicode(label)
            except (UnicodeEncodeError, UnicodeDecodeError) as exc:
                raise UnicodeDecodeError(
                    "idna",
                    input.encode("ascii", errors="backslashreplace"),
                    size + exc.start,
                    size + exc.end,
                    exc.reason,
                )
            else:
                result.append(u_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,
    )