# This file is part of Buildbot.  Buildbot is free software: you can
# redistribute it and/or modify it under the terms of the GNU General Public
# License as published by the Free Software Foundation, version 2.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
# details.
#
# You should have received a copy of the GNU General Public License along with
# this program; if not, write to the Free Software Foundation, Inc., 51
# Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
# Copyright Buildbot Team Members

from __future__ import with_statement

# strategy:
#
# if there is a VERSION file, use its contents. otherwise, call git to
# get a version string. if that also fails, use 'latest'.
#
import os

version = "latest"

try:
    fn = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'VERSION')
    with open(fn) as f:
        version = f.read().strip()

except IOError:
    from subprocess import Popen, PIPE
    import re

    VERSION_MATCH = re.compile(r'\d+\.\d+\.\d+(\w|-)*')

    try:
        dir = os.path.dirname(os.path.abspath(__file__))
        p = Popen(['git', 'describe', '--tags', '--always'], cwd=dir,
                  stdout=PIPE, stderr=PIPE)
        out = p.communicate()[0]

        if (not p.returncode) and out:
            v = VERSION_MATCH.search(out)
            if v:
                version = v.group()
    except OSError:
        pass
