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71 lines
1.7 KiB
Python
71 lines
1.7 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright: (c) 2019-2020, Ansible Project
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# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
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"""Version comparison helpers."""
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from __future__ import (absolute_import, division, print_function)
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__metaclass__ = type
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import operator
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from distutils.version import LooseVersion
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from ansible.utils.version import SemanticVersion
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def is_pre_release(version):
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# type: (str) -> bool
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"""Figure out if a given version is a pre-release."""
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try:
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return SemanticVersion(version).is_prerelease
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except ValueError:
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return False
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def meets_requirements(version, requirements):
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# type: (str, str) -> bool
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"""Verify if a given version satisfies all the requirements.
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Supported version identifiers are:
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* '=='
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* '!='
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* '>'
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* '>='
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* '<'
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* '<='
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* '*'
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Each requirement is delimited by ','.
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"""
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op_map = {
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'!=': operator.ne,
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'==': operator.eq,
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'=': operator.eq,
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'>=': operator.ge,
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'>': operator.gt,
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'<=': operator.le,
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'<': operator.lt,
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}
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for req in requirements.split(','):
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op_pos = 2 if len(req) > 1 and req[1] == '=' else 1
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op = op_map.get(req[:op_pos])
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requirement = req[op_pos:]
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if not op:
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requirement = req
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op = operator.eq
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if requirement == '*' or version == '*':
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continue
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if not op(
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SemanticVersion(version),
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SemanticVersion.from_loose_version(LooseVersion(requirement)),
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):
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break
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else:
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return True
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# The loop was broken early, it does not meet all the requirements
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return False
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