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d3de7c1 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 | from typing import Any, Union
from .core import decode, encode
def ToASCII(label: str) -> bytes:
"""Compatibility shim for :rfc:`3490` ``ToASCII``.
Delegates to :func:`idna.encode` (IDNA 2008). Provided to ease porting
of code written against the legacy :mod:`encodings.idna` API; new code
should call :func:`idna.encode` directly.
:param label: The label or domain to encode.
:returns: The encoded form as ASCII :class:`bytes`.
"""
return encode(label)
def ToUnicode(label: Union[bytes, bytearray]) -> str:
"""Compatibility shim for :rfc:`3490` ``ToUnicode``.
Delegates to :func:`idna.decode` (IDNA 2008). Provided to ease porting
of code written against the legacy :mod:`encodings.idna` API; new code
should call :func:`idna.decode` directly.
:param label: The label or domain to decode.
:returns: The decoded Unicode form.
"""
return decode(label)
def nameprep(s: Any) -> None:
"""Stub for :rfc:`3491` Nameprep, which is not used by IDNA 2008.
IDNA 2008 (:rfc:`5891`) replaces Nameprep with the per-codepoint
validity classes from :rfc:`5892`; this function exists only to
return a clear error if legacy code attempts to call it.
:raises NotImplementedError: Always.
"""
raise NotImplementedError("IDNA 2008 does not utilise nameprep protocol")
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