1
# Copyright (C) 2005 Canonical Ltd
3
# This program is free software; you can redistribute it and/or modify
4
# it under the terms of the GNU General Public License as published by
5
# the Free Software Foundation; either version 2 of the License, or
6
# (at your option) any later version.
8
# This program is distributed in the hope that it will be useful,
9
# but WITHOUT ANY WARRANTY; without even the implied warranty of
10
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11
# GNU General Public License for more details.
13
# You should have received a copy of the GNU General Public License
14
# along with this program; if not, write to the Free Software
15
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17
"""bzr upgrade logic."""
19
# change upgrade from .bzr to create a '.bzr-new', then do a bait and switch.
22
from bzrlib.bzrdir import ConvertBzrDir4To5, ConvertBzrDir5To6, BzrDir, BzrDirFormat4, BzrDirFormat5
23
import bzrlib.errors as errors
24
from bzrlib.transport import get_transport
25
import bzrlib.ui as ui
28
class Convert(object):
30
def __init__(self, url, format):
32
self.bzrdir = BzrDir.open_unsupported(url)
33
if self.bzrdir.root_transport.is_readonly():
34
raise errors.UpgradeReadonly
35
self.transport = self.bzrdir.root_transport
36
self.pb = ui.ui_factory.nested_progress_bar()
44
branch = self.bzrdir.open_branch()
45
if branch.bzrdir.root_transport.base != \
46
self.bzrdir.root_transport.base:
47
self.pb.note("This is a checkout. The branch (%s) needs to be "
48
"upgraded separately.",
49
branch.bzrdir.root_transport.base)
50
except errors.NotBranchError:
52
if not self.bzrdir.needs_format_conversion(self.format):
53
raise errors.UpToDateFormat(self.bzrdir._format)
54
if not self.bzrdir.can_convert_format():
55
raise errors.BzrError("cannot upgrade from branch format %s" %
57
self.pb.note('starting upgrade of %s', self.transport.base)
58
self._backup_control_dir()
59
while self.bzrdir.needs_format_conversion(self.format):
60
converter = self.bzrdir._format.get_converter(self.format)
61
self.bzrdir = converter.convert(self.bzrdir, self.pb)
62
self.pb.note("finished")
64
def _backup_control_dir(self):
65
self.pb.note('making backup of tree history')
66
self.transport.copy_tree('.bzr', '.bzr.backup')
67
self.pb.note('%s.bzr has been backed up to %s.bzr.backup',
70
self.pb.note('if conversion fails, you can move this directory back to .bzr')
71
self.pb.note('if it succeeds, you can remove this directory if you wish')
73
def upgrade(url, format=None):
74
"""Upgrade to format, or the default bzrdir format if not supplied."""