172 lines
6.6 KiB
Python
172 lines
6.6 KiB
Python
# Copyright 2019 Gordon Messmer <gordon.messmer@gmail.com>
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#
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# Upstream: https://github.com/gordonmessmer/pyreq2rpm
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#
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# Permission is hereby granted, free of charge, to any person
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# obtaining a copy of this software and associated documentation files
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# (the "Software"), to deal in the Software without restriction,
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# including without limitation the rights to use, copy, modify, merge,
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# publish, distribute, sublicense, and/or sell copies of the Software,
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# and to permit persons to whom the Software is furnished to do so,
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# subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be
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# included in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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# SOFTWARE.
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from packaging.requirements import Requirement
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from packaging.version import parse as parse_version
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class RpmVersion():
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def __init__(self, version_id):
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version = parse_version(version_id)
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if isinstance(version._version, str):
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self.version = version._version
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else:
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self.epoch = version._version.epoch
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self.version = list(version._version.release)
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self.pre = version._version.pre
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self.dev = version._version.dev
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self.post = version._version.post
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# version.local is ignored as it is not expected to appear
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# in public releases
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# https://www.python.org/dev/peps/pep-0440/#local-version-identifiers
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def is_legacy(self):
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return isinstance(self.version, str)
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def increment(self):
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self.version[-1] += 1
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self.pre = None
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self.dev = None
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self.post = None
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return self
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def __str__(self):
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if self.is_legacy():
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return self.version
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if self.epoch:
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rpm_epoch = str(self.epoch) + ':'
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else:
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rpm_epoch = ''
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while len(self.version) > 1 and self.version[-1] == 0:
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self.version.pop()
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rpm_version = '.'.join(str(x) for x in self.version)
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if self.pre:
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rpm_suffix = '~{}'.format(''.join(str(x) for x in self.pre))
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elif self.dev:
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rpm_suffix = '~~{}'.format(''.join(str(x) for x in self.dev))
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elif self.post:
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rpm_suffix = '^post{}'.format(self.post[1])
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else:
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rpm_suffix = ''
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return '{}{}{}'.format(rpm_epoch, rpm_version, rpm_suffix)
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def convert_compatible(name, operator, version_id):
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if version_id.endswith('.*'):
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return 'Invalid version'
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version = RpmVersion(version_id)
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if version.is_legacy():
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# LegacyVersions are not supported in this context
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return 'Invalid version'
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if len(version.version) == 1:
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return 'Invalid version'
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upper_version = RpmVersion(version_id)
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upper_version.version.pop()
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upper_version.increment()
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return '({} >= {} with {} < {})'.format(
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name, version, name, upper_version)
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def convert_equal(name, operator, version_id):
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if version_id.endswith('.*'):
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version_id = version_id[:-2] + '.0'
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return convert_compatible(name, '~=', version_id)
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version = RpmVersion(version_id)
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return '{} = {}'.format(name, version)
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def convert_arbitrary_equal(name, operator, version_id):
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if version_id.endswith('.*'):
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return 'Invalid version'
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version = RpmVersion(version_id)
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return '{} = {}'.format(name, version)
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def convert_not_equal(name, operator, version_id):
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if version_id.endswith('.*'):
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version_id = version_id[:-2]
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version = RpmVersion(version_id)
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if version.is_legacy():
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# LegacyVersions are not supported in this context
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return 'Invalid version'
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version_gt = RpmVersion(version_id).increment()
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version_gt_operator = '>='
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# Prevent dev and pre-releases from satisfying a < requirement
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version = '{}~~'.format(version)
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else:
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version = RpmVersion(version_id)
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version_gt = version
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version_gt_operator = '>'
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return '({} < {} or {} {} {})'.format(
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name, version, name, version_gt_operator, version_gt)
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def convert_ordered(name, operator, version_id):
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if version_id.endswith('.*'):
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# PEP 440 does not define semantics for prefix matching
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# with ordered comparisons
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# see: https://github.com/pypa/packaging/issues/320
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# and: https://github.com/pypa/packaging/issues/321
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# This style of specifier is officially "unsupported",
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# even though it is processed. Support may be removed
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# in version 21.0.
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version_id = version_id[:-2]
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version = RpmVersion(version_id)
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if operator == '>':
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# distutils will allow a prefix match with '>'
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operator = '>='
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if operator == '<=':
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# distutils will not allow a prefix match with '<='
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operator = '<'
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else:
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version = RpmVersion(version_id)
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# For backwards compatibility, fallback to previous behavior with LegacyVersions
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if not version.is_legacy():
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# Prevent dev and pre-releases from satisfying a < requirement
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if operator == '<' and not version.pre and not version.dev and not version.post:
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version = '{}~~'.format(version)
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# Prevent post-releases from satisfying a > requirement
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if operator == '>' and not version.pre and not version.dev and not version.post:
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version = '{}.0'.format(version)
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return '{} {} {}'.format(name, operator, version)
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OPERATORS = {'~=': convert_compatible,
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'==': convert_equal,
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'===': convert_arbitrary_equal,
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'!=': convert_not_equal,
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'<=': convert_ordered,
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'<': convert_ordered,
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'>=': convert_ordered,
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'>': convert_ordered}
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def convert(name, operator, version_id):
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return OPERATORS[operator](name, operator, version_id)
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def convert_requirement(req):
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parsed_req = Requirement.parse(req)
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reqs = []
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for spec in parsed_req.specs:
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reqs.append(convert(parsed_req.project_name, spec[0], spec[1]))
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if len(reqs) == 0:
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return parsed_req.project_name
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if len(reqs) == 1:
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return reqs[0]
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else:
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reqs.sort()
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return '({})'.format(' with '.join(reqs))
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