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Filename : utils.py

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# This file is dual licensed under the terms of the Apache License, Version
# 2.0, and the BSD License. See the LICENSE file in the root of this repository
# for complete details.
from __future__ import absolute_import, division, print_function

import re

from ._typing import MYPY_CHECK_RUNNING
from .version import InvalidVersion, Version

if MYPY_CHECK_RUNNING:  # pragma: no cover
    from typing import Union

_canonicalize_regex = re.compile(r"[-_.]+")


def canonicalize_name(name):
    # type: (str) -> str
    # This is taken from PEP 503.
    return _canonicalize_regex.sub("-", name).lower()


def canonicalize_version(_version):
    # type: (str) -> Union[Version, str]
    """
    This is very similar to Version.__str__, but has one subtle difference
    with the way it handles the release segment.
    """

    try:
        version = Version(_version)
    except InvalidVersion:
        # Legacy versions cannot be normalized
        return _version

    parts = []

    # Epoch
    if version.epoch != 0:
        parts.append("{0}!".format(version.epoch))

    # Release segment
    # NB: This strips trailing '.0's to normalize
    parts.append(re.sub(r"(\.0)+$", "", ".".join(str(x) for x in version.release)))

    # Pre-release
    if version.pre is not None:
        parts.append("".join(str(x) for x in version.pre))

    # Post-release
    if version.post is not None:
        parts.append(".post{0}".format(version.post))

    # Development release
    if version.dev is not None:
        parts.append(".dev{0}".format(version.dev))

    # Local version segment
    if version.local is not None:
        parts.append("+{0}".format(version.local))

    return "".join(parts)

Name	Size	Last Modified	Owner	Permissions
__pycache__	Dir	December 28 2023 9:21:46	root	0755
__about__.py	0.727 KB	December 28 2023 9:20:56	root	0755
__init__.py	0.549 KB	December 28 2023 9:20:56	root	0755
_compat.py	1.111 KB	December 28 2023 9:20:57	root	0755
_structures.py	1.975 KB	December 28 2023 9:20:57	root	0755
_typing.py	1.415 KB	April 29 2020 6:57:10	root	0755
markers.py	9.278 KB	December 28 2023 9:20:56	root	0755
requirements.py	4.798 KB	December 28 2023 9:20:56	root	0755
specifiers.py	30.58 KB	December 28 2023 9:20:56	root	0755
tags.py	23.148 KB	April 29 2020 6:57:10	root	0755
utils.py	1.66 KB	December 28 2023 9:20:57	root	0755
version.py	15.117 KB	December 28 2023 9:20:57	root	0755

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