| import collections |
| import re |
| import itertools |
| import functools |
| |
| _Version = collections.namedtuple( |
| "_Version", ["release", "patch_l", "pre_l", "pre_v"] |
| ) |
| |
| @functools.total_ordering |
| class Version(): |
| |
| def __init__(self, version, suffix=None): |
| |
| suffixes = ["alphabetical", "patch"] |
| |
| if str(suffix) == "alphabetical": |
| version_pattern = r"""r?v?(?:(?P<release>[0-9]+(?:[-\.][0-9]+)*)(?P<patch>[-_\.]?(?P<patch_l>[a-z]))?(?P<pre>[-_\.]?(?P<pre_l>(rc|alpha|beta|pre|preview|dev))[-_\.]?(?P<pre_v>[0-9]+)?)?)(.*)?""" |
| elif str(suffix) == "patch": |
| version_pattern = r"""r?v?(?:(?P<release>[0-9]+(?:[-\.][0-9]+)*)(?P<patch>[-_\.]?(p|patch)(?P<patch_l>[0-9]+))?(?P<pre>[-_\.]?(?P<pre_l>(rc|alpha|beta|pre|preview|dev))[-_\.]?(?P<pre_v>[0-9]+)?)?)(.*)?""" |
| else: |
| version_pattern = r"""r?v?(?:(?P<release>[0-9]+(?:[-\.][0-9]+)*)(?P<pre>[-_\.]?(?P<pre_l>(rc|alpha|beta|pre|preview|dev))[-_\.]?(?P<pre_v>[0-9]+)?)?)(.*)?""" |
| regex = re.compile(r"^\s*" + version_pattern + r"\s*$", re.VERBOSE | re.IGNORECASE) |
| |
| match = regex.search(version) |
| if not match: |
| raise Exception("Invalid version: '{0}'".format(version)) |
| |
| self._version = _Version( |
| release=tuple(int(i) for i in match.group("release").replace("-",".").split(".")), |
| patch_l=match.group("patch_l") if str(suffix) in suffixes and match.group("patch_l") else "", |
| pre_l=match.group("pre_l"), |
| pre_v=match.group("pre_v") |
| ) |
| |
| self._key = _cmpkey( |
| self._version.release, |
| self._version.patch_l, |
| self._version.pre_l, |
| self._version.pre_v |
| ) |
| |
| def __eq__(self, other): |
| if not isinstance(other, Version): |
| return NotImplemented |
| return self._key == other._key |
| |
| def __gt__(self, other): |
| if not isinstance(other, Version): |
| return NotImplemented |
| return self._key > other._key |
| |
| def _cmpkey(release, patch_l, pre_l, pre_v): |
| # remove leading 0 |
| _release = tuple( |
| reversed(list(itertools.dropwhile(lambda x: x == 0, reversed(release)))) |
| ) |
| |
| _patch = patch_l.upper() |
| |
| if pre_l is None and pre_v is None: |
| _pre = float('inf') |
| else: |
| _pre = float(pre_v) if pre_v else float('-inf') |
| return _release, _patch, _pre |