~bzr-pqm/bzr/bzr.dev

#! /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

"""Bazaar-NG -- a free distributed version-control tool"""

import os, sys

if __doc__ is None:

    print "bzr does not support python -OO."

    sys.exit(2)

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)

if hasattr(os, "unsetenv"):

    os.unsetenv(REINVOKE)

try:

    import bzrlib

    import bzrlib.commands

    import bzrlib.trace

except ImportError, e:

    sys.stderr.write("bzr: ERROR: "

                     "Couldn't import bzrlib and dependencies.\n"

                     "Please check bzrlib is on your PYTHONPATH.\n"

                     "\n")

    raise

if bzrlib.version_info[:3] != (0, 7, 0):

    sys.stderr.write("bzr: WARNING: bzrlib version doesn't match the bzr program.\n"

            "This may indicate an installation problem.\n"

            "bzrlib from %s is version %r\n"

            % (bzrlib.__path__, bzrlib.version_info))

if __name__ == '__main__':

    bzrlib.trace.enable_default_logging()

    sys.exit(bzrlib.commands.main(sys.argv))

else:

    pass    # should this give an error? - it can't be used as a lib