462 lines
13 KiB
Python
462 lines
13 KiB
Python
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"""Extract reference documentation from the pypa/packaging source tree.
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In the process of copying, some unused methods / classes were removed.
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These include:
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- parse()
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- anything involving LegacyVersion
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This software is made available under the terms of *either* of the licenses
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found in LICENSE.APACHE or LICENSE.BSD. Contributions to this software is made
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under the terms of *both* these licenses.
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Vendored from:
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- https://github.com/pypa/packaging/
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- commit ba07d8287b4554754ac7178d177033ea3f75d489 (09/09/2021)
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"""
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# This file is dual licensed under the terms of the Apache License, Version
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# 2.0, and the BSD License. See the LICENSE file in the root of this repository
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# for complete details.
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import collections
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import itertools
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import re
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from typing import Callable, Optional, SupportsInt, Tuple, Union
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__all__ = ["Version", "InvalidVersion", "VERSION_PATTERN"]
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# Vendored from https://github.com/pypa/packaging/blob/main/packaging/_structures.py
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class InfinityType:
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def __repr__(self) -> str:
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return "Infinity"
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def __hash__(self) -> int:
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return hash(repr(self))
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def __lt__(self, other: object) -> bool:
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return False
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def __le__(self, other: object) -> bool:
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return False
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def __eq__(self, other: object) -> bool:
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return isinstance(other, self.__class__)
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def __ne__(self, other: object) -> bool:
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return not isinstance(other, self.__class__)
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def __gt__(self, other: object) -> bool:
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return True
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def __ge__(self, other: object) -> bool:
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return True
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def __neg__(self: object) -> "NegativeInfinityType":
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return NegativeInfinity
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Infinity = InfinityType()
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class NegativeInfinityType:
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def __repr__(self) -> str:
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return "-Infinity"
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def __hash__(self) -> int:
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return hash(repr(self))
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def __lt__(self, other: object) -> bool:
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return True
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def __le__(self, other: object) -> bool:
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return True
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def __eq__(self, other: object) -> bool:
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return isinstance(other, self.__class__)
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def __ne__(self, other: object) -> bool:
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return not isinstance(other, self.__class__)
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def __gt__(self, other: object) -> bool:
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return False
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def __ge__(self, other: object) -> bool:
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return False
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def __neg__(self: object) -> InfinityType:
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return Infinity
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NegativeInfinity = NegativeInfinityType()
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# Vendored from https://github.com/pypa/packaging/blob/main/packaging/version.py
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InfiniteTypes = Union[InfinityType, NegativeInfinityType]
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PrePostDevType = Union[InfiniteTypes, Tuple[str, int]]
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SubLocalType = Union[InfiniteTypes, int, str]
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LocalType = Union[
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NegativeInfinityType,
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Tuple[
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Union[
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SubLocalType,
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Tuple[SubLocalType, str],
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Tuple[NegativeInfinityType, SubLocalType],
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],
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...,
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],
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]
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CmpKey = Tuple[
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int, Tuple[int, ...], PrePostDevType, PrePostDevType, PrePostDevType, LocalType
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]
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LegacyCmpKey = Tuple[int, Tuple[str, ...]]
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VersionComparisonMethod = Callable[
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[Union[CmpKey, LegacyCmpKey], Union[CmpKey, LegacyCmpKey]], bool
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]
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_Version = collections.namedtuple(
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"_Version", ["epoch", "release", "dev", "pre", "post", "local"]
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)
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class InvalidVersion(ValueError):
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"""
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An invalid version was found, users should refer to PEP 440.
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"""
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class _BaseVersion:
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_key: Union[CmpKey, LegacyCmpKey]
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def __hash__(self) -> int:
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return hash(self._key)
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# Please keep the duplicated `isinstance` check
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# in the six comparisons hereunder
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# unless you find a way to avoid adding overhead function calls.
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def __lt__(self, other: "_BaseVersion") -> bool:
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if not isinstance(other, _BaseVersion):
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return NotImplemented
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return self._key < other._key
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def __le__(self, other: "_BaseVersion") -> bool:
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if not isinstance(other, _BaseVersion):
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return NotImplemented
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return self._key <= other._key
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def __eq__(self, other: object) -> bool:
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if not isinstance(other, _BaseVersion):
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return NotImplemented
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return self._key == other._key
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def __ge__(self, other: "_BaseVersion") -> bool:
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if not isinstance(other, _BaseVersion):
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return NotImplemented
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return self._key >= other._key
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def __gt__(self, other: "_BaseVersion") -> bool:
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if not isinstance(other, _BaseVersion):
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return NotImplemented
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return self._key > other._key
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def __ne__(self, other: object) -> bool:
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if not isinstance(other, _BaseVersion):
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return NotImplemented
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return self._key != other._key
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# Deliberately not anchored to the start and end of the string, to make it
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# easier for 3rd party code to reuse
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VERSION_PATTERN = r"""
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v?
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(?:
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(?:(?P<epoch>[0-9]+)!)? # epoch
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(?P<release>[0-9]+(?:\.[0-9]+)*) # release segment
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(?P<pre> # pre-release
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[-_\.]?
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(?P<pre_l>(a|b|c|rc|alpha|beta|pre|preview))
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[-_\.]?
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(?P<pre_n>[0-9]+)?
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)?
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(?P<post> # post release
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(?:-(?P<post_n1>[0-9]+))
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(?:
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[-_\.]?
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(?P<post_l>post|rev|r)
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[-_\.]?
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(?P<post_n2>[0-9]+)?
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)
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)?
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(?P<dev> # dev release
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[-_\.]?
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(?P<dev_l>dev)
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[-_\.]?
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(?P<dev_n>[0-9]+)?
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)?
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)
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(?:\+(?P<local>[a-z0-9]+(?:[-_\.][a-z0-9]+)*))? # local version
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"""
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class Version(_BaseVersion):
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_regex = re.compile(r"^\s*" + VERSION_PATTERN + r"\s*$", re.VERBOSE | re.IGNORECASE)
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def __init__(self, version: str) -> None:
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# Validate the version and parse it into pieces
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match = self._regex.search(version)
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if not match:
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raise InvalidVersion(f"Invalid version: '{version}'")
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# Store the parsed out pieces of the version
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self._version = _Version(
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epoch=int(match.group("epoch")) if match.group("epoch") else 0,
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release=tuple(int(i) for i in match.group("release").split(".")),
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pre=_parse_letter_version(match.group("pre_l"), match.group("pre_n")),
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post=_parse_letter_version(
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match.group("post_l"), match.group("post_n1") or match.group("post_n2")
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),
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dev=_parse_letter_version(match.group("dev_l"), match.group("dev_n")),
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local=_parse_local_version(match.group("local")),
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)
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# Generate a key which will be used for sorting
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self._key = _cmpkey(
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self._version.epoch,
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self._version.release,
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self._version.pre,
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self._version.post,
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self._version.dev,
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self._version.local,
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)
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def __repr__(self) -> str:
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return f"<Version('{self}')>"
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def __str__(self) -> str:
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parts = []
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# Epoch
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if self.epoch != 0:
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parts.append(f"{self.epoch}!")
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# Release segment
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parts.append(".".join(str(x) for x in self.release))
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# Pre-release
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if self.pre is not None:
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parts.append("".join(str(x) for x in self.pre))
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# Post-release
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if self.post is not None:
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parts.append(f".post{self.post}")
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# Development release
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if self.dev is not None:
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parts.append(f".dev{self.dev}")
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# Local version segment
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if self.local is not None:
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parts.append(f"+{self.local}")
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return "".join(parts)
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@property
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def epoch(self) -> int:
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_epoch: int = self._version.epoch
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return _epoch
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@property
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def release(self) -> Tuple[int, ...]:
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_release: Tuple[int, ...] = self._version.release
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return _release
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@property
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def pre(self) -> Optional[Tuple[str, int]]:
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_pre: Optional[Tuple[str, int]] = self._version.pre
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return _pre
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@property
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def post(self) -> Optional[int]:
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return self._version.post[1] if self._version.post else None
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@property
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def dev(self) -> Optional[int]:
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return self._version.dev[1] if self._version.dev else None
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@property
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def local(self) -> Optional[str]:
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if self._version.local:
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return ".".join(str(x) for x in self._version.local)
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else:
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return None
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@property
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def public(self) -> str:
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return str(self).split("+", 1)[0]
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@property
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def base_version(self) -> str:
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parts = []
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# Epoch
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if self.epoch != 0:
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parts.append(f"{self.epoch}!")
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# Release segment
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parts.append(".".join(str(x) for x in self.release))
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return "".join(parts)
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@property
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def is_prerelease(self) -> bool:
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return self.dev is not None or self.pre is not None
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@property
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def is_postrelease(self) -> bool:
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return self.post is not None
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@property
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def is_devrelease(self) -> bool:
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return self.dev is not None
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@property
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def major(self) -> int:
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return self.release[0] if len(self.release) >= 1 else 0
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@property
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def minor(self) -> int:
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return self.release[1] if len(self.release) >= 2 else 0
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@property
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def micro(self) -> int:
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return self.release[2] if len(self.release) >= 3 else 0
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def _parse_letter_version(
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letter: str, number: Union[str, bytes, SupportsInt]
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) -> Optional[Tuple[str, int]]:
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if letter:
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# We consider there to be an implicit 0 in a pre-release if there is
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# not a numeral associated with it.
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if number is None:
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number = 0
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# We normalize any letters to their lower case form
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letter = letter.lower()
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# We consider some words to be alternate spellings of other words and
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# in those cases we want to normalize the spellings to our preferred
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# spelling.
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if letter == "alpha":
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letter = "a"
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elif letter == "beta":
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letter = "b"
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elif letter in ["c", "pre", "preview"]:
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letter = "rc"
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elif letter in ["rev", "r"]:
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letter = "post"
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return letter, int(number)
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if not letter and number:
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# We assume if we are given a number, but we are not given a letter
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# then this is using the implicit post release syntax (e.g. 1.0-1)
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letter = "post"
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return letter, int(number)
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return None
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_local_version_separators = re.compile(r"[\._-]")
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def _parse_local_version(local: str) -> Optional[LocalType]:
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"""
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Takes a string like abc.1.twelve and turns it into ("abc", 1, "twelve").
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"""
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if local is not None:
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return tuple(
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part.lower() if not part.isdigit() else int(part)
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for part in _local_version_separators.split(local)
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)
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return None
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def _cmpkey(
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epoch: int,
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release: Tuple[int, ...],
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pre: Optional[Tuple[str, int]],
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post: Optional[Tuple[str, int]],
|
||
|
|
dev: Optional[Tuple[str, int]],
|
||
|
|
local: Optional[Tuple[SubLocalType]],
|
||
|
|
) -> CmpKey:
|
||
|
|
|
||
|
|
# When we compare a release version, we want to compare it with all of the
|
||
|
|
# trailing zeros removed. So we'll use a reverse the list, drop all the now
|
||
|
|
# leading zeros until we come to something non zero, then take the rest
|
||
|
|
# re-reverse it back into the correct order and make it a tuple and use
|
||
|
|
# that for our sorting key.
|
||
|
|
_release = tuple(
|
||
|
|
reversed(list(itertools.dropwhile(lambda x: x == 0, reversed(release))))
|
||
|
|
)
|
||
|
|
|
||
|
|
# We need to "trick" the sorting algorithm to put 1.0.dev0 before 1.0a0.
|
||
|
|
# We'll do this by abusing the pre segment, but we _only_ want to do this
|
||
|
|
# if there is not a pre or a post segment. If we have one of those then
|
||
|
|
# the normal sorting rules will handle this case correctly.
|
||
|
|
if pre is None and post is None and dev is not None:
|
||
|
|
_pre: PrePostDevType = NegativeInfinity
|
||
|
|
# Versions without a pre-release (except as noted above) should sort after
|
||
|
|
# those with one.
|
||
|
|
elif pre is None:
|
||
|
|
_pre = Infinity
|
||
|
|
else:
|
||
|
|
_pre = pre
|
||
|
|
|
||
|
|
# Versions without a post segment should sort before those with one.
|
||
|
|
if post is None:
|
||
|
|
_post: PrePostDevType = NegativeInfinity
|
||
|
|
|
||
|
|
else:
|
||
|
|
_post = post
|
||
|
|
|
||
|
|
# Versions without a development segment should sort after those with one.
|
||
|
|
if dev is None:
|
||
|
|
_dev: PrePostDevType = Infinity
|
||
|
|
|
||
|
|
else:
|
||
|
|
_dev = dev
|
||
|
|
|
||
|
|
if local is None:
|
||
|
|
# Versions without a local segment should sort before those with one.
|
||
|
|
_local: LocalType = NegativeInfinity
|
||
|
|
else:
|
||
|
|
# Versions with a local segment need that segment parsed to implement
|
||
|
|
# the sorting rules in PEP440.
|
||
|
|
# - Alpha numeric segments sort before numeric segments
|
||
|
|
# - Alpha numeric segments sort lexicographically
|
||
|
|
# - Numeric segments sort numerically
|
||
|
|
# - Shorter versions sort before longer versions when the prefixes
|
||
|
|
# match exactly
|
||
|
|
_local = tuple(
|
||
|
|
(i, "") if isinstance(i, int) else (NegativeInfinity, i) for i in local
|
||
|
|
)
|
||
|
|
|
||
|
|
return epoch, _release, _pre, _post, _dev, _local
|