~bzr-pqm/bzr/bzr.dev

# Copyright (C) 2006-2010 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

from bzrlib import (

    inventory,

    xml6,

    )

class Serializer_v7(xml6.Serializer_v6):

    """A Serializer that supports tree references"""

    # this format is used by BzrBranch6

    supported_kinds = set(['file', 'directory', 'symlink', 'tree-reference'])

    format_num = '7'

    def _unpack_entry(self, elt, entry_cache=None, return_from_cache=False):

        kind = elt.tag

        if not kind in self.supported_kinds:

            raise AssertionError('unsupported entry kind %s' % kind)

        if kind == 'tree-reference':

            file_id = elt.attrib['file_id']

            name = elt.attrib['name']

            parent_id = elt.attrib['parent_id']

            revision = elt.get('revision')

            reference_revision = elt.get('reference_revision')

            return inventory.TreeReference(file_id, name, parent_id, revision,

                                           reference_revision)

        else:

            return xml6.Serializer_v6._unpack_entry(self, elt,

                entry_cache=entry_cache, return_from_cache=return_from_cache)

serializer_v7 = Serializer_v7()