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File Name : unicode_utils.py

import sys
import unicodedata
from configparser import RawConfigParser

from .compat import py39
from .warnings import SetuptoolsDeprecationWarning

# HFS Plus uses decomposed UTF-8
def decompose(path):
    if isinstance(path, str):
        return unicodedata.normalize('NFD', path)
    try:
        path = path.decode('utf-8')
        path = unicodedata.normalize('NFD', path)
        path = path.encode('utf-8')
    except UnicodeError:
        pass  # Not UTF-8
    return path

def filesys_decode(path):
    """
    Ensure that the given path is decoded,
    ``None`` when no expected encoding works
    """

if isinstance(path, str):
        return path

fs_enc = sys.getfilesystemencoding() or 'utf-8'
    candidates = fs_enc, 'utf-8'

for enc in candidates:
        try:
            return path.decode(enc)
        except UnicodeDecodeError:
            continue

return None

def try_encode(string, enc):
    "turn unicode encoding into a functional routine"
    try:
        return string.encode(enc)
    except UnicodeEncodeError:
        return None

def _read_utf8_with_fallback(file: str, fallback_encoding=py39.LOCALE_ENCODING) -> str:
    """
    First try to read the file with UTF-8, if there is an error fallback to a
    different encoding ("locale" by default). Returns the content of the file.
    Also useful when reading files that might have been produced by an older version of
    setuptools.
    """
    try:
        with open(file, "r", encoding="utf-8") as f:
            return f.read()
    except UnicodeDecodeError:  # pragma: no cover
        _Utf8EncodingNeeded.emit(file=file, fallback_encoding=fallback_encoding)
        with open(file, "r", encoding=fallback_encoding) as f:
            return f.read()

def _cfg_read_utf8_with_fallback(
    cfg: RawConfigParser, file: str, fallback_encoding=py39.LOCALE_ENCODING
) -> None:
    """Same idea as :func:`_read_utf8_with_fallback`, but for the
    :meth:`RawConfigParser.read` method.

This method may call ``cfg.clear()``.
    """
    try:
        cfg.read(file, encoding="utf-8")
    except UnicodeDecodeError:  # pragma: no cover
        _Utf8EncodingNeeded.emit(file=file, fallback_encoding=fallback_encoding)
        cfg.clear()
        cfg.read(file, encoding=fallback_encoding)

class _Utf8EncodingNeeded(SetuptoolsDeprecationWarning):
    _SUMMARY = """
    `encoding="utf-8"` fails with {file!r}, trying `encoding={fallback_encoding!r}`.
    """

_DETAILS = """
    Fallback behavior for UTF-8 is considered **deprecated** and future versions of
    `setuptools` may not implement it.

Please encode {file!r} with "utf-8" to ensure future builds will succeed.

If this file was produced by `setuptools` itself, cleaning up the cached files
    and re-building/re-installing the package with a newer version of `setuptools`
    (e.g. by updating `build-system.requires` in its `pyproject.toml`)
    might solve the problem.
    """
    # TODO: Add a deadline?
    #       Will we be able to remove this?
    #       The question comes to mind mainly because of sdists that have been produced
    #       by old versions of setuptools and published to PyPI...

Name	Type	Size	Owner/Group	Permission	Last Modified	Actions
.	dir	-	root/root	0755	2026-06-01 12:02:44
..	dir	-	root/root	0755	2026-06-01 12:02:45
__pycache__	dir	-	root/root	0755	2026-06-01 12:02:45
_distutils	dir	-	root/root	0755	2026-06-01 12:02:44
_vendor	dir	-	root/root	0755	2026-06-01 12:02:39
command	dir	-	root/root	0755	2026-06-01 12:02:45
compat	dir	-	root/root	0755	2026-06-01 12:02:45
config	dir	-	root/root	0755	2026-06-01 12:02:45
tests	dir	-	root/root	0755	2026-06-01 12:02:45
__init__.py	text/plain	9.3 KB	root/root	0644	2026-04-29 07:00:53
_core_metadata.py	text/plain	11.7 KB	root/root	0644	2026-04-29 07:00:53
_discovery.py	text/x-python	836 B	root/root	0644	2026-04-29 07:00:53
_entry_points.py	text/x-python	2.41 KB	root/root	0644	2026-04-29 07:00:53
_imp.py	text/plain	2.38 KB	root/root	0644	2026-04-29 07:00:53
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_itertools.py	text/x-python	657 B	root/root	0644	2026-04-29 07:00:53
_normalization.py	text/plain	5.66 KB	root/root	0644	2026-04-29 07:00:53
_path.py	text/x-python	2.91 KB	root/root	0644	2026-04-29 07:00:53
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_static.py	text/x-python	4.74 KB	root/root	0644	2026-04-29 07:00:53
archive_util.py	text/plain	7.18 KB	root/root	0644	2026-04-29 07:00:53
build_meta.py	text/plain	19.76 KB	root/root	0644	2026-04-29 07:00:53
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depends.py	text/x-python	5.83 KB	root/root	0644	2026-04-29 07:00:53
discovery.py	text/plain	20.79 KB	root/root	0644	2026-04-29 07:00:53
dist.py	text/x-python	44.13 KB	root/root	0644	2026-04-29 07:00:53
errors.py	text/plain	2.95 KB	root/root	0644	2026-04-29 07:00:53
extension.py	text/x-python	6.66 KB	root/root	0644	2026-04-29 07:00:53
glob.py	text/plain	5.92 KB	root/root	0644	2026-04-29 07:00:53
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installer.py	text/x-python	5.06 KB	root/root	0644	2026-04-29 07:00:53
launch.py	text/plain	820 B	root/root	0644	2026-04-29 07:00:53
launcher manifest.xml	text/xml	628 B	root/root	0644	2026-04-29 07:00:53
logging.py	text/x-python	1.23 KB	root/root	0644	2026-04-29 07:00:53
modified.py	text/x-python	568 B	root/root	0644	2026-04-29 07:00:53
monkey.py	text/plain	3.65 KB	root/root	0644	2026-04-29 07:00:53
msvc.py	text/plain	41.9 KB	root/root	0644	2026-04-29 07:00:53
namespaces.py	text/x-python	2.97 KB	root/root	0644	2026-04-29 07:00:53
script (dev).tmpl	text/plain	218 B	root/root	0644	2026-04-29 07:00:53
script.tmpl	text/plain	138 B	root/root	0644	2026-04-29 07:00:53
unicode_utils.py	text/x-python	3.11 KB	root/root	0644	2026-04-29 07:00:53
version.py	text/x-python	161 B	root/root	0644	2026-04-29 07:00:53
warnings.py	text/plain	3.71 KB	root/root	0644	2026-04-29 07:00:53
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windows_support.py	text/x-python	726 B	root/root	0644	2026-04-29 07:00:53