/usr/lib/python2.7/dist-packages/packaging/utils.py is in python-packaging 17.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 | # 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 .version import InvalidVersion, Version
_canonicalize_regex = re.compile(r"[-_.]+")
def canonicalize_name(name):
# This is taken from PEP 503.
return _canonicalize_regex.sub("-", name).lower()
def canonicalize_version(version):
"""
This is very similar to Version.__str__, but has one subtle differences
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)
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