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#!/usr/bin/python -u
# vim: set fileencoding=utf-8 :
#
# (C) 2009 Guido Guenther <agx@sigxcpu.org>
#    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
#
# inspired by dom-git-checkout
#
"""clone a repo and set it up for gbp"""

import sys
import os, os.path
from gbp.config import (GbpOptionParser, GbpOptionGroup)
from gbp.git import (GitRepositoryError, GitRepository)
from gbp.command_wrappers import (GitClone, Command, CommandExecFailed, GitBranch)
from gbp.errors import GbpError


def main(argv):
    retval = 0
    pristine_tar_branch = 'pristine-tar'

    parser = GbpOptionParser(command=os.path.basename(argv[0]), prefix='',
                             usage='%prog [options] repository - clone a remote repository')
    branch_group = GbpOptionGroup(parser, "branch options", "branch layout options")
    parser.add_option_group(branch_group)

    branch_group.add_config_file_option(option_name="upstream-branch", dest="upstream_branch")
    branch_group.add_config_file_option(option_name="debian-branch", dest="debian_branch")
    branch_group.add_boolean_config_file_option(option_name="pristine-tar", dest="pristine_tar")
    parser.add_option("-v", "--verbose", action="store_true", dest="verbose", default=False,
                      help="verbose command execution")

    (options, args) = parser.parse_args(argv)

    if len(args) != 2:
        print >>sys.stderr, "Need a repository to clone.\n"
        parser.print_help()
        return 1
    else:
        repo = args[1]

    if options.verbose:
        Command.verbose = True

    try:
        repo = GitRepository(os.path.curdir)
        print >>sys.stderr, "Can't run inside a git repository."
        return 1
    except GitRepositoryError:
        pass


    branches = [ options.debian_branch, options.upstream_branch ]
    try:
        GitClone()([repo])

        (clone, dummy) = os.path.splitext(repo.rsplit('/',1)[1])
        os.chdir(clone)

        repo = GitRepository(os.path.curdir)

        if options.pristine_tar:
            branches += [ pristine_tar_branch ]

        for branch in branches:
            remote = 'origin/%s' % branch
            if repo.has_branch(remote, remote=True) and \
               not repo.has_branch(branch):
                GitBranch()(branch, remote)

    except CommandExecFailed:
        retval = 1
    except GbpError, err:
        if len(err.__str__()):
            print >>sys.stderr, err
        retval = 1

    return retval

if __name__ == '__main__':
    sys.exit(main(sys.argv))