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# Copyright (C) 2005 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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"""bzr upgrade logic."""
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# change upgrade from .bzr to create a '.bzr-new', then do a bait and switch.
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from bzrlib.bzrdir import ConvertBzrDir4To5, ConvertBzrDir5To6, BzrDir, BzrDirFormat4, BzrDirFormat5
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import bzrlib.errors as errors
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from bzrlib.transport import get_transport
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import bzrlib.ui as ui
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class Convert(object):
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def __init__(self, url, format):
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self.bzrdir = BzrDir.open_unsupported(url)
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if self.bzrdir.root_transport.is_readonly():
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raise errors.UpgradeReadonly
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self.transport = self.bzrdir.root_transport
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self.pb = ui.ui_factory.progress_bar()
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branch = self.bzrdir.open_branch()
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if branch.bzrdir.root_transport.base != self.bzrdir.root_transport.base:
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self.pb.note("This is a checkout. The branch (%s) needs to be "
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"upgraded separately.",
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branch.bzrdir.root_transport.base)
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if not self.bzrdir.needs_format_conversion(self.format):
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raise errors.UpToDateFormat(self.bzrdir._format)
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if not self.bzrdir.can_convert_format():
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raise errors.BzrError("cannot upgrade from branch format %s" %
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self.pb.note('starting upgrade of %s', self.transport.base)
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self._backup_control_dir()
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while self.bzrdir.needs_format_conversion(self.format):
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converter = self.bzrdir._format.get_converter(self.format)
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self.bzrdir = converter.convert(self.bzrdir, self.pb)
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self.pb.note("finished")
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def _backup_control_dir(self):
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self.pb.note('making backup of tree history')
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self.transport.copy_tree('.bzr', '.bzr.backup')
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self.pb.note('%s.bzr has been backed up to %s.bzr.backup',
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self.pb.note('if conversion fails, you can move this directory back to .bzr')
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self.pb.note('if it succeeds, you can remove this directory if you wish')
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def upgrade(url, format=None):
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"""Upgrade to format, or the default bzrdir format if not supplied."""