~bzr-pqm/bzr/bzr.dev

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#! /usr/bin/env python

# Copyright (C) 2005 by Canonical Ltd

# This program 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; either version 2 of the License, or
# (at your option) any later version.

# 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

import os, sys

try:
    version_info = sys.version_info
except AttributeError:
    version_info = 1, 5 # 1.5 or older


REINVOKE = "__BZR_REINVOKE"    
NEED_VERS = (2, 4)
KNOWN_PYTHONS = ('python2.4',)

if version_info < NEED_VERS:
    if not os.environ.has_key(REINVOKE):
        # mutating os.environ doesn't work in old Pythons
        os.putenv(REINVOKE, "1")
        for python in KNOWN_PYTHONS:
            try:
                os.execvp(python, [python] + sys.argv)
            except OSError:
                pass
    print >>sys.stderr, "bzr: error: cannot find a suitable python interpreter"
    print >>sys.stderr, "  (need %d.%d or later)" % NEED_VERS
    sys.exit(1)
os.unsetenv(REINVOKE)

import bzrlib
import bzrlib.commands
import bzrlib.trace

if __name__ == '__main__':
    bzrlib.trace.enable_default_logging()
    sys.exit(bzrlib.commands.main(sys.argv))