/brz/remove-bazaar

# Copyright (C) 2008 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

from bzrlib.bzrdir import BzrDir

from bzrlib.repository import Repository

from bzrlib.plugins.git.fetch import import_git_objects

from bzrlib.plugins.git.mapping import default_mapping

from dulwich.server import Backend

from dulwich.pack import Pack, PackData, write_pack_index_v2

from dulwich.objects import ShaFile

import os, tempfile

class BzrBackend(Backend):

    def __init__(self, directory):

        self.directory = directory

        self.mapping = default_mapping

    def get_refs(self):

        """ return a dict of all tags and branches in repository (and shas) """

        return {}

    def apply_pack(self, refs, read):

        """ apply pack from client to current repository """

        fd, path = tempfile.mkstemp(suffix=".pack")

        f = os.fdopen(fd, 'w')

        f.write(read())

        f.close()

        p = PackData(path)

        entries = p.sorted_entries()

        write_pack_index_v2(path[:-5]+".idx", entries, p.calculate_checksum())

        def get_objects():

            pack = Pack(path[:-5])

            for obj in pack.iterobjects():

                yield obj

        target = Repository.open(self.directory)

        target.lock_write()

        try:

            target.start_write_group()

            try:

                import_git_objects(target, self.mapping, iter(get_objects()))

            finally:

                target.commit_write_group()

        finally:

            target.unlock()

        for oldsha, sha, ref in refs:

            if ref[:11] == 'refs/heads/':

                branch_nick = ref[11:]

                try:

                    target_dir = BzrDir.open(self.directory + "/" + branch_nick)

                except:

                    target_dir = BzrDir.create(self.directory + "/" + branch_nick)

                try:

                    target_branch = target_dir.open_branch()

                except:

                    target_branch = target_dir.create_branch()

                rev_id = self.mapping.revision_id_foreign_to_bzr(sha)

                target_branch.generate_revision_history(rev_id) 

    def fetch_objects(self, determine_wants, graph_walker, progress):

        """ yield git objects to send to client """