version.py

#
# Copyright (c) 2010-2012 Liraz Siri <liraz@turnkeylinux.org>
#
# This file is part of TKLBAM (TurnKey Linux BAckup and Migration).
#
# TKLBAM is open source 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; either version 3 of
# the License, or (at your option) any later version.
#
import re
import executil

class Error(Exception):
    pass

def get_turnkey_version():
    try:
        return file("/etc/turnkey_version").readline().strip()
    except:
        pass

    try:
        return executil.getoutput("turnkey-version")
    except executil.ExecError:
        return None

def codename(version):
    m = re.match(r'turnkey-(.*?)-([\d\.]+|beta)', version)
    if not m:
        raise Error("can't parse codename from '%s'" % version)

    codename, release = m.groups()
    return codename