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# Copyright (C) 2005, 2006, 2007 Canonical Ltd
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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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# 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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# 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 cache_utf8, inventory, errors, xml5
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class Serializer_v8(xml5.Serializer_v5):
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"""This serialiser adds rich roots.
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Its revision format number matches its inventory number.
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def _append_inventory_root(self, append, inv):
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"""Append the inventory root to output."""
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if inv.revision_id is not None:
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revid1 = ' revision_id="'
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revid2 = xml5._encode_and_escape(inv.revision_id)
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append('<inventory format="%s"%s%s>\n' % (
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self.format_num, revid1, revid2))
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append('<directory file_id="%s name="%s revision="%s />\n' % (
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xml5._encode_and_escape(inv.root.file_id),
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xml5._encode_and_escape(inv.root.name),
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xml5._encode_and_escape(inv.root.revision)))
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def _check_revisions(self, inv):
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"""Extension point for subclasses to check during serialisation.
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By default no checking is done.
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:param inv: An inventory about to be serialised, to be checked.
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:raises: AssertionError if an error has occured.
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assert inv.revision_id is not None
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assert inv.root.revision is not None
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def _unpack_inventory(self, elt, revision_id=None):
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"""Construct from XML Element"""
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if elt.tag != 'inventory':
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raise errors.UnexpectedInventoryFormat('Root tag is %r' % elt.tag)
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format = elt.get('format')
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if format != self.format_num:
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raise errors.UnexpectedInventoryFormat('Invalid format version %r'
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revision_id = elt.get('revision_id')
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if revision_id is not None:
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revision_id = cache_utf8.encode(revision_id)
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inv = inventory.Inventory(root_id=None, revision_id=revision_id)
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ie = self._unpack_entry(e)
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assert inv.root.revision is not None
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serializer_v8 = Serializer_v8()