~bzr-pqm/bzr/bzr.dev

# 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()