~bzr-pqm/bzr/bzr.dev

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# Copyright (C) 2006, 2007 Canonical Ltd
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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from bzrlib import (
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    inventory,
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    xml6,
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    )
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class Serializer_v7(xml6.Serializer_v6):
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    """A Serializer that supports tree references"""
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    # this format is used by BzrBranch6
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    supported_kinds = set(['file', 'directory', 'symlink', 'tree-reference'])
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    format_num = '7'
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    def _unpack_entry(self, elt):
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        kind = elt.tag
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        if not kind in self.supported_kinds:
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            raise AssertionError('unsupported entry kind %s' % kind)
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        if kind == 'tree-reference':
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            file_id = elt.attrib['file_id']
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            name = elt.attrib['name']
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            parent_id = elt.attrib['parent_id']
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            revision = elt.get('revision')
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            reference_revision = elt.get('reference_revision')
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            return inventory.TreeReference(file_id, name, parent_id, revision,
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                                           reference_revision)
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        else:
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            return xml6.Serializer_v6._unpack_entry(self, elt)
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serializer_v7 = Serializer_v7()