82 lines
2.6 KiB
Python
82 lines
2.6 KiB
Python
# -*- coding: utf-8 -*-
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# *****************************************************************************
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# MLZ library of Tango servers
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# Copyright (c) 2015-2017 by the authors, see LICENSE
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#
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# This program is free software; you can redistribute it and/or modify it under
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# the terms of the GNU General Public License as published by the Free Software
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# Foundation; either version 2 of the License, or (at your option) any later
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# version.
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#
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# This program is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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# details.
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#
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# You should have received a copy of the GNU General Public License along with
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# this program; if not, write to the Free Software Foundation, Inc.,
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# 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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# Module authors:
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# Douglas Creager <dcreager@dcreager.net>
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# This file is placed into the public domain.
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#
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# *****************************************************************************
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from __future__ import print_function
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import os.path
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from subprocess import Popen, PIPE
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__all__ = ['get_version']
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RELEASE_VERSION_FILE = os.path.join(os.path.dirname(__file__),
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'RELEASE-VERSION')
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GIT_REPO = os.path.join(os.path.dirname(__file__), '..', '.git')
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def get_git_version(abbrev=4, cwd=None):
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try:
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p = Popen(['git', '--git-dir=%s' % GIT_REPO,
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'describe', '--abbrev=%d' % abbrev],
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stdout=PIPE, stderr=PIPE)
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stdout, _stderr = p.communicate()
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return stdout.strip().decode('utf-8', 'ignore')
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except Exception:
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return None
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def read_release_version():
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try:
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with open(RELEASE_VERSION_FILE) as f:
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return f.readline().strip()
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except Exception:
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return None
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def write_release_version(version):
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with open(RELEASE_VERSION_FILE, 'w') as f:
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f.write("%s\n" % version)
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def get_version(abbrev=4):
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# determine the version from git and from RELEASE-VERSION
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git_version = get_git_version(abbrev)
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release_version = read_release_version()
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# if we have a git version, it is authoritative
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if git_version:
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if git_version != release_version:
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write_release_version(git_version)
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return git_version
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elif release_version:
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return release_version
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else:
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raise ValueError('Cannot find a version number - make sure that '
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'git is installed or a RELEASE-VERSION file is '
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'present!')
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if __name__ == "__main__":
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print(get_version())
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