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# Copyright (C) 2005 Canonical Ltd
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# Copyright (C) 2005, 2008, 2009 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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"""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, BzrDirFormat
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from bzrlib.bzrdir import BzrDir, BzrDirFormat
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import bzrlib.errors as errors
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from bzrlib.remote import RemoteBzrDir
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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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format = BzrDirFormat.get_default_format()
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self.format = format
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self.bzrdir = BzrDir.open_unsupported(url)
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if isinstance(self.bzrdir, RemoteBzrDir):
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self.bzrdir._ensure_real()
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self.bzrdir = self.bzrdir._real_bzrdir
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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.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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except errors.NotBranchError:
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except (errors.NotBranchError, errors.IncompatibleRepositories):
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# might not be a format we can open without upgrading; see e.g.
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# https://bugs.launchpad.net/bzr/+bug/253891
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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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raise errors.BzrError("cannot upgrade from bzrdir format %s" %
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self.bzrdir._format)
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if self.format is None:
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target_format = BzrDirFormat.get_default_format()
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target_format = self.format
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self.bzrdir.check_conversion_target(target_format)
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self.bzrdir.check_conversion_target(self.format)
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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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self.bzrdir.backup_bzrdir()
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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', 'backup.bzr')
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self.pb.note('%s.bzr has been backed up to %sbackup.bzr',
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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."""