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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+
+from __future__ import absolute_import
+
+from bzrlib.bundle.serializer import _get_bundle_header
+from bzrlib.bundle.serializer.v08 import BundleSerializerV08, BundleReader
+from bzrlib.testament import StrictTestament3
+from bzrlib.bundle.bundle_data import BundleInfo
+
+
+"""Serializer for bundle format 0.9"""
+
+
+class BundleSerializerV09(BundleSerializerV08):
+ """Serializer for bzr bundle format 0.9
+
+ This format supports rich root data, for the nested-trees work, but also
+ supports repositories that don't have rich root data. It cannot be
+ used to transfer from a knit2 repo into a knit1 repo, because that would
+ be lossy.
+ """
+
+ def check_compatible(self):
+ pass
+
+ def _write_main_header(self):
+ """Write the header for the changes"""
+ f = self.to_file
+ f.write(_get_bundle_header('0.9') + '#\n')
+
+ def _testament_sha1(self, revision_id):
+ return StrictTestament3.from_revision(self.source,
+ revision_id).as_sha1()
+
+ def read(self, f):
+ """Read the rest of the bundles from the supplied file.
+
+ :param f: The file to read from
+ :return: A list of bundles
+ """
+ return BundleReaderV09(f).info
+
+
+class BundleInfo09(BundleInfo):
+ """BundleInfo that uses StrictTestament3
+
+ This means that the root data is included in the testament.
+ """
+
+ def _testament_sha1_from_revision(self, repository, revision_id):
+ testament = StrictTestament3.from_revision(repository, revision_id)
+ return testament.as_sha1()
+
+ def _testament_sha1(self, revision, tree):
+ return StrictTestament3(revision, tree).as_sha1()
+
+
+class BundleReaderV09(BundleReader):
+ """BundleReader for 0.9 bundles"""
+
+ def _get_info(self):
+ return BundleInfo09()