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# Copyright (C) 2010-2012 Linaro Limited
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# Author: Zygmunt Krynicki <zygmunt.krynicki@linaro.org>
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# This file is part of versiontools.
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# versiontools is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Lesser General Public License version 3
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# as published by the Free Software Foundation
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# versiontools is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU Lesser General Public License
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# along with versiontools. If not, see <http://www.gnu.org/licenses/>.
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versiontools.setuptools_hooks
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=============================
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Plugins for setuptools that add versintools features.
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Setuptools has a framework where external packages, such as versiontools, can
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hook into setup.py metadata and commands. We use this feature to intercept
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special values of the ``version`` keyword argument to ``setup()``. This
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argument handled by the following method:
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from distutils.errors import DistutilsSetupError
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from versiontools import Version, _get_exception_message
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def version(dist, attr, value):
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Handle the ``version`` keyword to setuptools.setup()
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This function is normally called by setuptools, it is advertised in the
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entry points of versiontools as setuptools extension. There is no need
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# We need to look at dist.metadata.version to actually see the version
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# that was passed to setup. Something in between does not seem to like our
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# version string and we get 0 here, odd.
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value = dist.metadata.version
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if sys.version_info[:1] < (3,):
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isstring = lambda string: isinstance(string, basestring)
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isstring = lambda string: isinstance(string, str)
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if not (isstring(value)
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and value.startswith(":versiontools:")):
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# Peel away the magic tag
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value = value[len(":versiontools:"):]
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# Lookup the version object
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version = Version.from_expression(value)
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# Update distribution metadata
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dist.metadata.version = str(version)
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message = _get_exception_message(*sys.exc_info())
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if message.startswith(": "):
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raise DistutilsSetupError(message)
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removed
versiontools-1.9.1-py2.7.egg/versiontools/setuptools_hooks.py
