diff options
Diffstat (limited to 'third_party/python/setuptools/setuptools/_vendor/packaging/utils.py')
-rw-r--r-- | third_party/python/setuptools/setuptools/_vendor/packaging/utils.py | 132 |
1 files changed, 104 insertions, 28 deletions
diff --git a/third_party/python/setuptools/setuptools/_vendor/packaging/utils.py b/third_party/python/setuptools/setuptools/_vendor/packaging/utils.py index 19579c1a0f..33c613b749 100644 --- a/third_party/python/setuptools/setuptools/_vendor/packaging/utils.py +++ b/third_party/python/setuptools/setuptools/_vendor/packaging/utils.py @@ -1,65 +1,141 @@ # 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 FrozenSet, NewType, Tuple, Union, cast -from ._typing import TYPE_CHECKING, cast +from .tags import Tag, parse_tag from .version import InvalidVersion, Version -if TYPE_CHECKING: # pragma: no cover - from typing import NewType, Union +BuildTag = Union[Tuple[()], Tuple[int, str]] +NormalizedName = NewType("NormalizedName", str) + + +class InvalidWheelFilename(ValueError): + """ + An invalid wheel filename was found, users should refer to PEP 427. + """ + + +class InvalidSdistFilename(ValueError): + """ + An invalid sdist filename was found, users should refer to the packaging user guide. + """ - NormalizedName = NewType("NormalizedName", str) _canonicalize_regex = re.compile(r"[-_.]+") +# PEP 427: The build number must start with a digit. +_build_tag_regex = re.compile(r"(\d+)(.*)") -def canonicalize_name(name): - # type: (str) -> NormalizedName +def canonicalize_name(name: str) -> NormalizedName: # This is taken from PEP 503. value = _canonicalize_regex.sub("-", name).lower() - return cast("NormalizedName", value) + return cast(NormalizedName, value) -def canonicalize_version(_version): - # type: (str) -> Union[Version, str] +def canonicalize_version( + version: Union[Version, str], *, strip_trailing_zero: bool = True +) -> 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 + if isinstance(version, str): + try: + parsed = Version(version) + except InvalidVersion: + # Legacy versions cannot be normalized + return version + else: + parsed = version parts = [] # Epoch - if version.epoch != 0: - parts.append("{0}!".format(version.epoch)) + if parsed.epoch != 0: + parts.append(f"{parsed.epoch}!") # Release segment - # NB: This strips trailing '.0's to normalize - parts.append(re.sub(r"(\.0)+$", "", ".".join(str(x) for x in version.release))) + release_segment = ".".join(str(x) for x in parsed.release) + if strip_trailing_zero: + # NB: This strips trailing '.0's to normalize + release_segment = re.sub(r"(\.0)+$", "", release_segment) + parts.append(release_segment) # Pre-release - if version.pre is not None: - parts.append("".join(str(x) for x in version.pre)) + if parsed.pre is not None: + parts.append("".join(str(x) for x in parsed.pre)) # Post-release - if version.post is not None: - parts.append(".post{0}".format(version.post)) + if parsed.post is not None: + parts.append(f".post{parsed.post}") # Development release - if version.dev is not None: - parts.append(".dev{0}".format(version.dev)) + if parsed.dev is not None: + parts.append(f".dev{parsed.dev}") # Local version segment - if version.local is not None: - parts.append("+{0}".format(version.local)) + if parsed.local is not None: + parts.append(f"+{parsed.local}") return "".join(parts) + + +def parse_wheel_filename( + filename: str, +) -> Tuple[NormalizedName, Version, BuildTag, FrozenSet[Tag]]: + if not filename.endswith(".whl"): + raise InvalidWheelFilename( + f"Invalid wheel filename (extension must be '.whl'): {filename}" + ) + + filename = filename[:-4] + dashes = filename.count("-") + if dashes not in (4, 5): + raise InvalidWheelFilename( + f"Invalid wheel filename (wrong number of parts): {filename}" + ) + + parts = filename.split("-", dashes - 2) + name_part = parts[0] + # See PEP 427 for the rules on escaping the project name + if "__" in name_part or re.match(r"^[\w\d._]*$", name_part, re.UNICODE) is None: + raise InvalidWheelFilename(f"Invalid project name: {filename}") + name = canonicalize_name(name_part) + version = Version(parts[1]) + if dashes == 5: + build_part = parts[2] + build_match = _build_tag_regex.match(build_part) + if build_match is None: + raise InvalidWheelFilename( + f"Invalid build number: {build_part} in '{filename}'" + ) + build = cast(BuildTag, (int(build_match.group(1)), build_match.group(2))) + else: + build = () + tags = parse_tag(parts[-1]) + return (name, version, build, tags) + + +def parse_sdist_filename(filename: str) -> Tuple[NormalizedName, Version]: + if filename.endswith(".tar.gz"): + file_stem = filename[: -len(".tar.gz")] + elif filename.endswith(".zip"): + file_stem = filename[: -len(".zip")] + else: + raise InvalidSdistFilename( + f"Invalid sdist filename (extension must be '.tar.gz' or '.zip'):" + f" {filename}" + ) + + # We are requiring a PEP 440 version, which cannot contain dashes, + # so we split on the last dash. + name_part, sep, version_part = file_stem.rpartition("-") + if not sep: + raise InvalidSdistFilename(f"Invalid sdist filename: {filename}") + + name = canonicalize_name(name_part) + version = Version(version_part) + return (name, version) |