~bzr-pqm/bzr/bzr.dev

#! /usr/bin/env python

# Copyright (C) 2005, 2006, 2007 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 -- a free distributed version-control tool"""

import os

import 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', 'python2.5')

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)

profiling = False

if '--profile-imports' in sys.argv:

    sys.argv.remove('--profile-imports')

    import profile_imports

    profile_imports.install()

    profiling = True

try:

    import bzrlib

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

import bzrlib.inspect_for_copy

bzrlib.inspect_for_copy.import_copy_with_hacked_inspect()

import bzrlib.lazy_regex

bzrlib.lazy_regex.install_lazy_compile()

import bzrlib.breakin

bzrlib.breakin.hook_sigquit()

import bzrlib.decorators

if ('--lsprof' in sys.argv

    or '--lsprof-file' in sys.argv

    or '--profile' in sys.argv

    or '--lsprof-timed' in sys.argv):

    bzrlib.decorators.use_pretty_decorators()

else:

    bzrlib.decorators.use_fast_decorators()

import bzrlib.commands

import bzrlib.trace

if bzrlib.version_info[:3] != (0, 18, 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()

    exit_val = bzrlib.commands.main(sys.argv)

    if profiling:

        profile_imports.log_stack_info(sys.stderr)

    # run anything registered by atexit, because it won't be run in the normal

    # way

    sys.exitfunc()

    # By this point we really have completed everything we want to do, and

    # there's no point doing any additional cleanup.  Abruptly exiting here

    # stops any background threads getting into trouble as code is unloaded,

    # and it may also be slightly faster, through avoiding gc of objects that

    # are just about to be discarded anyhow.  This does mean that atexit hooks

    # won't run but we don't use them.  Also file buffers won't be flushed,

    # but our policy is to always close files from a finally block. -- mbp 20070215

    try:

        sys.stdout.flush()

        sys.stderr.flush()

    except IOError, e:

        import errno

        if sys.platform != 'win32' or e.errno != errno.EINVAL:

            raise

    if bzrlib.trace._trace_file:

        # this is also _bzr_log

        bzrlib.trace._trace_file.flush()

    os._exit(exit_val)

else:

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