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# Copyright (C) 2005, 2006, 2007 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 cache_utf8, inventory, errors, xml5
class Serializer_v6(xml5.Serializer_v5):
"""This serialiser adds rich roots."""
format_num = '6'
root_id = None
def _append_inventory_root(self, append, inv):
"""Append the inventory root to output."""
if inv.revision_id is not None:
revid1 = ' revision_id="'
revid2 = xml5._encode_and_escape(inv.revision_id)
else:
revid1 = ""
revid2 = ""
append('<inventory format="%s"%s%s>\n' % (
self.format_num, revid1, revid2))
append('<directory file_id="%s name="%s revision="%s />\n' % (
xml5._encode_and_escape(inv.root.file_id),
xml5._encode_and_escape(inv.root.name),
xml5._encode_and_escape(inv.root.revision)))
def _check_revisions(self, inv):
"""Extension point for subclasses to check during serialisation.
By default no checking is done.
:param inv: An inventory about to be serialised, to be checked.
:raises: AssertionError if an error has occured.
"""
assert inv.revision_id is not None
assert inv.root.revision is not None
def _unpack_inventory(self, elt, revision_id=None):
"""Construct from XML Element"""
if elt.tag != 'inventory':
raise errors.UnexpectedInventoryFormat('Root tag is %r' % elt.tag)
format = elt.get('format')
if format != self.format_num:
raise errors.UnexpectedInventoryFormat('Invalid format version %r'
% format)
revision_id = elt.get('revision_id')
if revision_id is not None:
revision_id = cache_utf8.encode(revision_id)
inv = inventory.Inventory(root_id=None, revision_id=revision_id)
for e in elt:
ie = self._unpack_entry(e)
inv.add(ie)
assert inv.root.revision is not None
return inv
serializer_v6 = Serializer_v6()
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