~bzr-pqm/bzr/bzr.dev

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# Copyright (C) 2006 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 import (
    inventory, 
    xml6,
    )


class Serializer_v7(xml6.Serializer_v6):
    """A Serializer that supports tree references"""

    supported_kinds = set(['file', 'directory', 'symlink', 'tree-reference'])
    format_num = '7'

    def _unpack_entry(self, elt, none_parents):
        assert none_parents is True
        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, none_parents)

serializer_v7 = Serializer_v7()