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Diffstat (limited to 'venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_vendor/packaging/version.py')
| -rw-r--r-- | venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_vendor/packaging/version.py | 420 |
1 files changed, 0 insertions, 420 deletions
diff --git a/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_vendor/packaging/version.py b/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_vendor/packaging/version.py deleted file mode 100644 index 95157a1..0000000 --- a/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_vendor/packaging/version.py +++ /dev/null @@ -1,420 +0,0 @@ -# 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 collections -import itertools -import re - -from ._structures import Infinity - - -__all__ = ["parse", "Version", "LegacyVersion", "InvalidVersion", "VERSION_PATTERN"] - - -_Version = collections.namedtuple( - "_Version", ["epoch", "release", "dev", "pre", "post", "local"] -) - - -def parse(version): - """ - Parse the given version string and return either a :class:`Version` object - or a :class:`LegacyVersion` object depending on if the given version is - a valid PEP 440 version or a legacy version. - """ - try: - return Version(version) - except InvalidVersion: - return LegacyVersion(version) - - -class InvalidVersion(ValueError): - """ - An invalid version was found, users should refer to PEP 440. - """ - - -class _BaseVersion(object): - def __hash__(self): - return hash(self._key) - - def __lt__(self, other): - return self._compare(other, lambda s, o: s < o) - - def __le__(self, other): - return self._compare(other, lambda s, o: s <= o) - - def __eq__(self, other): - return self._compare(other, lambda s, o: s == o) - - def __ge__(self, other): - return self._compare(other, lambda s, o: s >= o) - - def __gt__(self, other): - return self._compare(other, lambda s, o: s > o) - - def __ne__(self, other): - return self._compare(other, lambda s, o: s != o) - - def _compare(self, other, method): - if not isinstance(other, _BaseVersion): - return NotImplemented - - return method(self._key, other._key) - - -class LegacyVersion(_BaseVersion): - def __init__(self, version): - self._version = str(version) - self._key = _legacy_cmpkey(self._version) - - def __str__(self): - return self._version - - def __repr__(self): - return "<LegacyVersion({0})>".format(repr(str(self))) - - @property - def public(self): - return self._version - - @property - def base_version(self): - return self._version - - @property - def epoch(self): - return -1 - - @property - def release(self): - return None - - @property - def pre(self): - return None - - @property - def post(self): - return None - - @property - def dev(self): - return None - - @property - def local(self): - return None - - @property - def is_prerelease(self): - return False - - @property - def is_postrelease(self): - return False - - @property - def is_devrelease(self): - return False - - -_legacy_version_component_re = re.compile(r"(\d+ | [a-z]+ | \.| -)", re.VERBOSE) - -_legacy_version_replacement_map = { - "pre": "c", - "preview": "c", - "-": "final-", - "rc": "c", - "dev": "@", -} - - -def _parse_version_parts(s): - for part in _legacy_version_component_re.split(s): - part = _legacy_version_replacement_map.get(part, part) - - if not part or part == ".": - continue - - if part[:1] in "0123456789": - # pad for numeric comparison - yield part.zfill(8) - else: - yield "*" + part - - # ensure that alpha/beta/candidate are before final - yield "*final" - - -def _legacy_cmpkey(version): - # We hardcode an epoch of -1 here. A PEP 440 version can only have a epoch - # greater than or equal to 0. This will effectively put the LegacyVersion, - # which uses the defacto standard originally implemented by setuptools, - # as before all PEP 440 versions. - epoch = -1 - - # This scheme is taken from pkg_resources.parse_version setuptools prior to - # it's adoption of the packaging library. - parts = [] - for part in _parse_version_parts(version.lower()): - if part.startswith("*"): - # remove "-" before a prerelease tag - if part < "*final": - while parts and parts[-1] == "*final-": - parts.pop() - - # remove trailing zeros from each series of numeric parts - while parts and parts[-1] == "00000000": - parts.pop() - - parts.append(part) - parts = tuple(parts) - - return epoch, parts - - -# Deliberately not anchored to the start and end of the string, to make it -# easier for 3rd party code to reuse -VERSION_PATTERN = r""" - v? - (?: - (?:(?P<epoch>[0-9]+)!)? # epoch - (?P<release>[0-9]+(?:\.[0-9]+)*) # release segment - (?P<pre> # pre-release - [-_\.]? - (?P<pre_l>(a|b|c|rc|alpha|beta|pre|preview)) - [-_\.]? - (?P<pre_n>[0-9]+)? - )? - (?P<post> # post release - (?:-(?P<post_n1>[0-9]+)) - | - (?: - [-_\.]? - (?P<post_l>post|rev|r) - [-_\.]? - (?P<post_n2>[0-9]+)? - ) - )? - (?P<dev> # dev release - [-_\.]? - (?P<dev_l>dev) - [-_\.]? - (?P<dev_n>[0-9]+)? - )? - ) - (?:\+(?P<local>[a-z0-9]+(?:[-_\.][a-z0-9]+)*))? # local version -""" - - -class Version(_BaseVersion): - - _regex = re.compile(r"^\s*" + VERSION_PATTERN + r"\s*$", re.VERBOSE | re.IGNORECASE) - - def __init__(self, version): - # Validate the version and parse it into pieces - match = self._regex.search(version) - if not match: - raise InvalidVersion("Invalid version: '{0}'".format(version)) - - # Store the parsed out pieces of the version - self._version = _Version( - epoch=int(match.group("epoch")) if match.group("epoch") else 0, - release=tuple(int(i) for i in match.group("release").split(".")), - pre=_parse_letter_version(match.group("pre_l"), match.group("pre_n")), - post=_parse_letter_version( - match.group("post_l"), match.group("post_n1") or match.group("post_n2") - ), - dev=_parse_letter_version(match.group("dev_l"), match.group("dev_n")), - local=_parse_local_version(match.group("local")), - ) - - # Generate a key which will be used for sorting - self._key = _cmpkey( - self._version.epoch, - self._version.release, - self._version.pre, - self._version.post, - self._version.dev, - self._version.local, - ) - - def __repr__(self): - return "<Version({0})>".format(repr(str(self))) - - def __str__(self): - parts = [] - - # Epoch - if self.epoch != 0: - parts.append("{0}!".format(self.epoch)) - - # Release segment - parts.append(".".join(str(x) for x in self.release)) - - # Pre-release - if self.pre is not None: - parts.append("".join(str(x) for x in self.pre)) - - # Post-release - if self.post is not None: - parts.append(".post{0}".format(self.post)) - - # Development release - if self.dev is not None: - parts.append(".dev{0}".format(self.dev)) - - # Local version segment - if self.local is not None: - parts.append("+{0}".format(self.local)) - - return "".join(parts) - - @property - def epoch(self): - return self._version.epoch - - @property - def release(self): - return self._version.release - - @property - def pre(self): - return self._version.pre - - @property - def post(self): - return self._version.post[1] if self._version.post else None - - @property - def dev(self): - return self._version.dev[1] if self._version.dev else None - - @property - def local(self): - if self._version.local: - return ".".join(str(x) for x in self._version.local) - else: - return None - - @property - def public(self): - return str(self).split("+", 1)[0] - - @property - def base_version(self): - parts = [] - - # Epoch - if self.epoch != 0: - parts.append("{0}!".format(self.epoch)) - - # Release segment - parts.append(".".join(str(x) for x in self.release)) - - return "".join(parts) - - @property - def is_prerelease(self): - return self.dev is not None or self.pre is not None - - @property - def is_postrelease(self): - return self.post is not None - - @property - def is_devrelease(self): - return self.dev is not None - - -def _parse_letter_version(letter, number): - if letter: - # We consider there to be an implicit 0 in a pre-release if there is - # not a numeral associated with it. - if number is None: - number = 0 - - # We normalize any letters to their lower case form - letter = letter.lower() - - # We consider some words to be alternate spellings of other words and - # in those cases we want to normalize the spellings to our preferred - # spelling. - if letter == "alpha": - letter = "a" - elif letter == "beta": - letter = "b" - elif letter in ["c", "pre", "preview"]: - letter = "rc" - elif letter in ["rev", "r"]: - letter = "post" - - return letter, int(number) - if not letter and number: - # We assume if we are given a number, but we are not given a letter - # then this is using the implicit post release syntax (e.g. 1.0-1) - letter = "post" - - return letter, int(number) - - -_local_version_separators = re.compile(r"[\._-]") - - -def _parse_local_version(local): - """ - Takes a string like abc.1.twelve and turns it into ("abc", 1, "twelve"). - """ - if local is not None: - return tuple( - part.lower() if not part.isdigit() else int(part) - for part in _local_version_separators.split(local) - ) - - -def _cmpkey(epoch, release, pre, post, dev, local): - # 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 = -Infinity - # Versions without a pre-release (except as noted above) should sort after - # those with one. - elif pre is None: - pre = Infinity - - # Versions without a post segment should sort before those with one. - if post is None: - post = -Infinity - - # Versions without a development segment should sort after those with one. - if dev is None: - dev = Infinity - - if local is None: - # Versions without a local segment should sort before those with one. - local = -Infinity - 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 (-Infinity, i) for i in local) - - return epoch, release, pre, post, dev, local |