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# Copyright (C) 2006-2010 Canonical Ltd
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# Copyright (C) 2005, 2006, 2007, 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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class ControlComponent(object):
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"""Abstract base class for control directory components.
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This provides interfaces that are common across bzrdirs,
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repositories, branches, and workingtree control directories.
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They all expose two urls and transports: the *user* URL is the
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one that stops above the control directory (eg .bzr) and that
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should normally be used in messages, and the *control* URL is
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under that in eg .bzr/checkout and is used to read the control
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This can be used as a mixin and is intended to fit with
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def control_transport(self):
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raise NotImplementedError
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def control_url(self):
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return self.control_transport.base
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def user_transport(self):
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raise NotImplementedError
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return self.user_transport.base
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class BzrDir(ControlComponent):
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"""A .bzr control diretory.
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BzrDir instances let you create or open any of the things that can be
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# copied, and finally if we are copying up to a specific
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# revision_id then we can use the pending-ancestry-result which
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# does not require traversing all of history to describe it.
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if (result_repo.user_url == result.user_url
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and not require_stacking and
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if (result_repo.bzrdir.root_transport.base ==
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result.root_transport.base and not require_stacking and
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revision_id is not None):
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fetch_spec = graph.PendingAncestryResult(
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[revision_id], local_repo)
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for subdir in sorted(subdirs, reverse=True):
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pending.append(current_transport.clone(subdir))
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def list_branches(self):
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"""Return a sequence of all branches local to this control directory.
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return [self.open_branch()]
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except errors.NotBranchError:
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def find_branches(transport):
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"""Find all branches under a transport.
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except errors.NoRepositoryPresent:
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return False, ([], repository)
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return True, (bzrdir.list_branches(), None)
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for branches, repo in BzrDir.find_bzrdirs(transport,
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return False, (None, repository)
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branch = bzrdir.open_branch()
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except errors.NotBranchError:
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return True, (None, None)
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return True, (branch, None)
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for branch, repo in BzrDir.find_bzrdirs(transport, evaluate=evaluate):
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if repo is not None:
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ret.extend(repo.find_branches())
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if branches is not None:
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branches.extend(repo.find_branches())
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if branch is not None:
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branches.append(branch)
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def destroy_repository(self):
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"""Destroy the repository in this BzrDir"""
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raise NotImplementedError(self.destroy_repository)
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def create_branch(self, name=None):
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def create_branch(self):
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"""Create a branch in this BzrDir.
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:param name: Name of the colocated branch to create, None for
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The bzrdir's format will control what branch format is created.
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For more control see BranchFormatXX.create(a_bzrdir).
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raise NotImplementedError(self.create_branch)
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def destroy_branch(self, name=None):
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"""Destroy a branch in this BzrDir.
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:param name: Name of the branch to destroy, None for the default
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def destroy_branch(self):
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"""Destroy the branch in this BzrDir"""
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raise NotImplementedError(self.destroy_branch)
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except errors.NoRepositoryPresent:
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repository = None
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if (found_bzrdir.user_url != self.user_url
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and not repository.is_shared()):
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if ((found_bzrdir.root_transport.base !=
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self.root_transport.base) and not repository.is_shared()):
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# Don't look higher, can't use a higher shared repo.
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repository = None
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:return: Tuple with old path name and new path name
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def name_gen(base='backup.bzr'):
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name = "%s.~%d~" % (base, counter)
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while self.root_transport.has(name):
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name = "%s.~%d~" % (base, counter)
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backup_dir=name_gen()
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pb = ui.ui_factory.nested_progress_bar()
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# FIXME: bug 300001 -- the backup fails if the backup directory
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# already exists, but it should instead either remove it or make
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# a new backup directory.
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# FIXME: bug 262450 -- the backup directory should have the same
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# permissions as the .bzr directory (probably a bug in copy_tree)
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old_path = self.root_transport.abspath('.bzr')
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new_path = self.root_transport.abspath(backup_dir)
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ui.ui_factory.note('making backup of %s\n to %s' % (old_path, new_path,))
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self.root_transport.copy_tree('.bzr', backup_dir)
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new_path = self.root_transport.abspath('backup.bzr')
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pb.note('making backup of %s' % (old_path,))
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pb.note(' to %s' % (new_path,))
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self.root_transport.copy_tree('.bzr', 'backup.bzr')
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return (old_path, new_path)
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next_transport = found_bzrdir.root_transport.clone('..')
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if (found_bzrdir.user_url == next_transport.base):
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if (found_bzrdir.root_transport.base == next_transport.base):
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# top of the file system
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# find the next containing bzrdir
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repository = found_bzrdir.open_repository()
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except errors.NoRepositoryPresent:
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return None, False
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if found_bzrdir.user_url == self.user_url:
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if found_bzrdir.root_transport.base == self.root_transport.base:
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return repository, True
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elif repository.is_shared():
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return repository, True
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def get_branch_transport(self, branch_format, name=None):
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def get_branch_transport(self, branch_format):
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"""Get the transport for use by branch format in this BzrDir.
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Note that bzr dirs that do not support format strings will raise
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:param _transport: the transport this dir is based at.
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self._format = _format
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# these are also under the more standard names of
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# control_transport and user_transport
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self.transport = _transport.clone('.bzr')
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self.root_transport = _transport
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self._mode_check_done = False
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def user_transport(self):
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return self.root_transport
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def control_transport(self):
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return self.transport
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def is_control_filename(self, filename):
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"""True if filename is the name of a path which is reserved for bzrdir's.
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BzrDir._check_supported(format, _unsupported)
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return format.open(transport, _found=True)
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def open_branch(self, name=None, unsupported=False,
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ignore_fallbacks=False):
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def open_branch(self, unsupported=False, ignore_fallbacks=False):
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"""Open the branch object at this BzrDir if one is present.
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If unsupported is True, then no longer supported branch formats can
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raise NotImplementedError(self.open_workingtree)
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def has_branch(self, name=None):
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def has_branch(self):
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"""Tell if this bzrdir contains a branch.
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Note: if you're going to open the branch, you should just go ahead
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self.create_hook(hooks.HookPoint('pre_open',
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"Invoked before attempting to open a BzrDir with the transport "
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"that the open will use.", (1, 14), None))
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self.create_hook(hooks.HookPoint('post_repo_init',
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"Invoked after a repository has been initialized. "
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"post_repo_init is called with a "
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"bzrlib.bzrdir.RepoInitHookParams.",
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# install the default hooks
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BzrDir.hooks = BzrDirHooks()
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class RepoInitHookParams(object):
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"""Object holding parameters passed to *_repo_init hooks.
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There are 4 fields that hooks may wish to access:
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:ivar repository: Repository created
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:ivar format: Repository format
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:ivar bzrdir: The bzrdir for the repository
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:ivar shared: The repository is shared
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def __init__(self, repository, format, a_bzrdir, shared):
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"""Create a group of RepoInitHook parameters.
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:param repository: Repository created
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:param format: Repository format
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:param bzrdir: The bzrdir for the repository
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:param shared: The repository is shared
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self.repository = repository
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self.format = format
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self.bzrdir = a_bzrdir
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self.shared = shared
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def __eq__(self, other):
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return self.__dict__ == other.__dict__
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return "<%s for %s>" % (self.__class__.__name__,
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return "<%s for %s>" % (self.__class__.__name__,
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class BzrDirPreSplitOut(BzrDir):
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"""A common class for the all-in-one formats."""
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tree.clone(result)
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def create_branch(self, name=None):
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def create_branch(self):
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"""See BzrDir.create_branch."""
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return self._format.get_branch_format().initialize(self, name=name)
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return self._format.get_branch_format().initialize(self)
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def destroy_branch(self, name=None):
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def destroy_branch(self):
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"""See BzrDir.destroy_branch."""
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raise errors.UnsupportedOperation(self.destroy_branch, self)
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raise errors.UnsupportedOperation(self.destroy_workingtree_metadata,
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def get_branch_transport(self, branch_format, name=None):
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def get_branch_transport(self, branch_format):
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"""See BzrDir.get_branch_transport()."""
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if name is not None:
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raise errors.NoColocatedBranchSupport(self)
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if branch_format is None:
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return self.transport
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format = BzrDirFormat.get_default_format()
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return not isinstance(self._format, format.__class__)
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def open_branch(self, name=None, unsupported=False,
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ignore_fallbacks=False):
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def open_branch(self, unsupported=False, ignore_fallbacks=False):
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"""See BzrDir.open_branch."""
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from bzrlib.branch import BzrBranchFormat4
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format = BzrBranchFormat4()
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self._check_supported(format, unsupported)
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return format.open(self, name, _found=True)
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return format.open(self, _found=True)
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def sprout(self, url, revision_id=None, force_new_repo=False,
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possible_transports=None, accelerator_tree=None,
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"""See BzrDir.can_convert_format()."""
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def create_branch(self, name=None):
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def create_branch(self):
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"""See BzrDir.create_branch."""
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return self._format.get_branch_format().initialize(self, name=name)
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return self._format.get_branch_format().initialize(self)
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def destroy_branch(self, name=None):
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def destroy_branch(self):
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"""See BzrDir.create_branch."""
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if name is not None:
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raise errors.NoColocatedBranchSupport(self)
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self.transport.delete_tree('branch')
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def create_repository(self, shared=False):
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format = BranchFormat.find_format(self)
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return format.get_reference(self)
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def get_branch_transport(self, branch_format, name=None):
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def get_branch_transport(self, branch_format):
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"""See BzrDir.get_branch_transport()."""
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if name is not None:
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raise errors.NoColocatedBranchSupport(self)
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# XXX: this shouldn't implicitly create the directory if it's just
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# promising to get a transport -- mbp 20090727
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if branch_format is None:
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except errors.NoRepositoryPresent:
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for branch in self.list_branches():
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if not isinstance(branch._format,
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if not isinstance(self.open_branch()._format,
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format.get_branch_format().__class__):
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# the branch needs an upgrade.
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except errors.NotBranchError:
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my_wt = self.open_workingtree(recommend_upgrade=False)
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if not isinstance(my_wt._format,
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def open_branch(self, name=None, unsupported=False,
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ignore_fallbacks=False):
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def open_branch(self, unsupported=False, ignore_fallbacks=False):
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"""See BzrDir.open_branch."""
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format = self.find_branch_format()
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self._check_supported(format, unsupported)
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return format.open(self, name=name,
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_found=True, ignore_fallbacks=ignore_fallbacks)
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return format.open(self, _found=True, ignore_fallbacks=ignore_fallbacks)
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def open_repository(self, unsupported=False):
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"""See BzrDir.open_repository."""
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Once a format is deprecated, just deprecate the initialize and open
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methods on the format class. Do not deprecate the object, as the
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object will be created every system load.
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:cvar colocated_branches: Whether this formats supports colocated branches.
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_default_format = None
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_lock_file_name = 'branch-lock'
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colocated_branches = False
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"""Whether co-located branches are supported for this control dir format.
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# _lock_class must be set in subclasses to the lock type, typ.
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# TransportLock or LockDir
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def probe_transport(klass, transport):
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"""Return the .bzrdir style format present in a directory."""
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format_string = transport.get_bytes(".bzr/branch-format")
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format_string = transport.get(".bzr/branch-format").read()
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except errors.NoSuchFile:
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raise errors.NotBranchError(path=transport.base)
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def convert(self, to_convert, pb):
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"""See Converter.convert()."""
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self.bzrdir = to_convert
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warnings.warn("pb parameter to convert() is deprecated")
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self.pb = ui.ui_factory.nested_progress_bar()
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ui.ui_factory.note('starting upgrade from format 4 to 5')
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if isinstance(self.bzrdir.transport, local.LocalTransport):
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self.bzrdir.get_workingtree_transport(None).delete('stat-cache')
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self._convert_to_weaves()
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return BzrDir.open(self.bzrdir.user_url)
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self.pb.note('starting upgrade from format 4 to 5')
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if isinstance(self.bzrdir.transport, local.LocalTransport):
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self.bzrdir.get_workingtree_transport(None).delete('stat-cache')
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self._convert_to_weaves()
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return BzrDir.open(self.bzrdir.root_transport.base)
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def _convert_to_weaves(self):
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ui.ui_factory.note('note: upgrade may be faster if all store files are ungzipped first')
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self.pb.note('note: upgrade may be faster if all store files are ungzipped first')
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# TODO permissions
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stat = self.bzrdir.transport.stat('weaves')
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self.pb.clear()
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self._write_all_weaves()
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self._write_all_revs()
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ui.ui_factory.note('upgraded to weaves:')
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ui.ui_factory.note(' %6d revisions and inventories' % len(self.revisions))
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ui.ui_factory.note(' %6d revisions not present' % len(self.absent_revisions))
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ui.ui_factory.note(' %6d texts' % self.text_count)
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self.pb.note('upgraded to weaves:')
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self.pb.note(' %6d revisions and inventories', len(self.revisions))
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self.pb.note(' %6d revisions not present', len(self.absent_revisions))
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self.pb.note(' %6d texts', self.text_count)
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self._cleanup_spare_files_after_format4()
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self.branch._transport.put_bytes(
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'branch-format',
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len(self.known_revisions))
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if not self.branch.repository.has_revision(rev_id):
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self.pb.clear()
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ui.ui_factory.note('revision {%s} not present in branch; '
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'will be converted as a ghost' %
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self.pb.note('revision {%s} not present in branch; '
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'will be converted as a ghost',
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self.absent_revisions.add(rev_id)
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def convert(self, to_convert, pb):
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"""See Converter.convert()."""
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self.bzrdir = to_convert
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pb = ui.ui_factory.nested_progress_bar()
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ui.ui_factory.note('starting upgrade from format 5 to 6')
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self._convert_to_prefixed()
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return BzrDir.open(self.bzrdir.user_url)
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self.pb.note('starting upgrade from format 5 to 6')
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self._convert_to_prefixed()
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return BzrDir.open(self.bzrdir.root_transport.base)
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def _convert_to_prefixed(self):
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from bzrlib.store import TransportStore
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self.bzrdir.transport.delete('branch-format')
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for store_name in ["weaves", "revision-store"]:
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ui.ui_factory.note("adding prefixes to %s" % store_name)
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self.pb.note("adding prefixes to %s" % store_name)
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store_transport = self.bzrdir.transport.clone(store_name)
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store = TransportStore(store_transport, prefixed=True)
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for urlfilename in store_transport.list_dir('.'):
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from bzrlib.repofmt.weaverepo import RepositoryFormat7
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from bzrlib.branch import BzrBranchFormat5
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self.bzrdir = to_convert
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self.pb = ui.ui_factory.nested_progress_bar()
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self.total = 20 # the steps we know about
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self.garbage_inventories = []
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self.dir_mode = self.bzrdir._get_dir_mode()
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self.file_mode = self.bzrdir._get_file_mode()
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ui.ui_factory.note('starting upgrade from format 6 to metadir')
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self.pb.note('starting upgrade from format 6 to metadir')
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self.bzrdir.transport.put_bytes(
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'branch-format',
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"Converting to format 6",
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has_checkout = True
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if not has_checkout:
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ui.ui_factory.note('No working tree.')
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self.pb.note('No working tree.')
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# If some checkout files are there, we may as well get rid of them.
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for name, mandatory in checkout_files:
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if name in bzrcontents:
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'branch-format',
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BzrDirMetaFormat1().get_format_string(),
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mode=self.file_mode)
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return BzrDir.open(self.bzrdir.user_url)
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return BzrDir.open(self.bzrdir.root_transport.base)
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def make_lock(self, name):
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"""Make a lock for the new control dir name."""
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def convert(self, to_convert, pb):
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"""See Converter.convert()."""
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self.bzrdir = to_convert
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self.pb = ui.ui_factory.nested_progress_bar()
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self.step('checking repository format')
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if not isinstance(repo._format, self.target_format.repository_format.__class__):
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from bzrlib.repository import CopyConverter
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ui.ui_factory.note('starting repository conversion')
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self.pb.note('starting repository conversion')
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converter = CopyConverter(self.target_format.repository_format)
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converter.convert(repo, pb)
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for branch in self.bzrdir.list_branches():
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branch = self.bzrdir.open_branch()
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except errors.NotBranchError:
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# TODO: conversions of Branch and Tree should be done by
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# InterXFormat lookups/some sort of registry.
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# Avoid circular imports
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def __init__(self):
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BzrDirMetaFormat1.__init__(self)
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# XXX: It's a bit ugly that the network name is here, because we'd
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# like to believe that format objects are stateless or at least
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# immutable, However, we do at least avoid mutating the name after
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# it's returned. See <https://bugs.edge.launchpad.net/bzr/+bug/504102>
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self._network_name = None
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return "%s(_network_name=%r)" % (self.__class__.__name__,
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def get_format_description(self):
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if self._network_name:
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real_format = network_format_registry.get(self._network_name)
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return 'Remote: ' + real_format.get_format_description()
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return 'bzr remote bzrdir'
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def get_format_string(self):
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args.append(self._serialize_NoneString(repo_format_name))
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args.append(self._serialize_NoneTrueFalse(make_working_trees))
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args.append(self._serialize_NoneTrueFalse(shared_repo))
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request_network_name = self._network_name or \
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if self._network_name is None:
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self._network_name = \
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BzrDirFormat.get_default_format().network_name()
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response = client.call('BzrDirFormat.initialize_ex_1.16',
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request_network_name, path, *args)
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self.network_name(), path, *args)
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except errors.UnknownSmartMethod:
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client._medium._remember_remote_is_before((1,16))
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local_dir_format = BzrDirMetaFormat1()
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experimental_pairs.append((key, help))
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output += wrapped(key, help, info)
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output += "\nSee :doc:`formats-help` for more about storage formats."
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output += "\nSee ``bzr help formats`` for more about storage formats."
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other_output = ""
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if len(experimental_pairs) > 0:
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other_output += "Experimental formats are shown below.\n\n"
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stack_on = urlutils.rebase_url(self._stack_on,
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self._stack_on_pwd,
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branch.bzrdir.root_transport.base)
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except errors.InvalidRebaseURLs:
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stack_on = self._get_full_stack_on()
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format_registry.register('weave', BzrDirFormat6,
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'Pre-0.8 format. Slower than knit and does not'
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' support checkouts or shared repositories.',
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deprecated=True)
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format_registry.register_metadir('metaweave',
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'bzrlib.repofmt.weaverepo.RepositoryFormat7',
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'Transitional format in 0.8. Slower than knit.',
3846
3712
branch_format='bzrlib.branch.BzrBranchFormat5',
3847
3713
tree_format='bzrlib.workingtree.WorkingTreeFormat3',
3849
3714
deprecated=True)
3850
3715
format_registry.register_metadir('knit',
3851
3716
'bzrlib.repofmt.knitrepo.RepositoryFormatKnit1',
3852
3717
'Format using knits. Recommended for interoperation with bzr <= 0.14.',
3853
3718
branch_format='bzrlib.branch.BzrBranchFormat5',
3854
3719
tree_format='bzrlib.workingtree.WorkingTreeFormat3',
3856
3720
deprecated=True)
3857
3721
format_registry.register_metadir('dirstate',
3858
3722
'bzrlib.repofmt.knitrepo.RepositoryFormatKnit1',
3862
3726
# this uses bzrlib.workingtree.WorkingTreeFormat4 because importing
3863
3727
# directly from workingtree_4 triggers a circular import.
3864
3728
tree_format='bzrlib.workingtree.WorkingTreeFormat4',
3866
3729
deprecated=True)
3867
3730
format_registry.register_metadir('dirstate-tags',
3868
3731
'bzrlib.repofmt.knitrepo.RepositoryFormatKnit1',
3871
3734
' Incompatible with bzr < 0.15.',
3872
3735
branch_format='bzrlib.branch.BzrBranchFormat6',
3873
3736
tree_format='bzrlib.workingtree.WorkingTreeFormat4',
3875
3737
deprecated=True)
3876
3738
format_registry.register_metadir('rich-root',
3877
3739
'bzrlib.repofmt.knitrepo.RepositoryFormatKnit4',
3880
3742
branch_format='bzrlib.branch.BzrBranchFormat6',
3881
3743
tree_format='bzrlib.workingtree.WorkingTreeFormat4',
3883
3744
deprecated=True)
3884
3745
format_registry.register_metadir('dirstate-with-subtree',
3885
3746
'bzrlib.repofmt.knitrepo.RepositoryFormatKnit3',
3896
3757
help='New in 0.92: Pack-based format with data compatible with '
3897
3758
'dirstate-tags format repositories. Interoperates with '
3898
3759
'bzr repositories before 0.92 but cannot be read by bzr < 0.92. '
3760
'Previously called knitpack-experimental. '
3761
'For more information, see '
3762
'http://doc.bazaar-vcs.org/latest/developers/packrepo.html.',
3900
3763
branch_format='bzrlib.branch.BzrBranchFormat6',
3901
3764
tree_format='bzrlib.workingtree.WorkingTreeFormat4',
3905
3768
help='New in 0.92: Pack-based format with data compatible with '
3906
3769
'dirstate-with-subtree format repositories. Interoperates with '
3907
3770
'bzr repositories before 0.92 but cannot be read by bzr < 0.92. '
3771
'Previously called knitpack-experimental. '
3772
'For more information, see '
3773
'http://doc.bazaar-vcs.org/latest/developers/packrepo.html.',
3909
3774
branch_format='bzrlib.branch.BzrBranchFormat6',
3910
3775
tree_format='bzrlib.workingtree.WorkingTreeFormat4',
3917
3782
'(needed for bzr-svn and bzr-git).',
3918
3783
branch_format='bzrlib.branch.BzrBranchFormat6',
3919
3784
tree_format='bzrlib.workingtree.WorkingTreeFormat4',
3922
3786
format_registry.register_metadir('1.6',
3923
3787
'bzrlib.repofmt.pack_repo.RepositoryFormatKnitPack5',
3926
3790
'not present locally.',
3927
3791
branch_format='bzrlib.branch.BzrBranchFormat7',
3928
3792
tree_format='bzrlib.workingtree.WorkingTreeFormat4',
3931
3794
format_registry.register_metadir('1.6.1-rich-root',
3932
3795
'bzrlib.repofmt.pack_repo.RepositoryFormatKnitPack5RichRoot',
3934
3797
'(needed for bzr-svn and bzr-git).',
3935
3798
branch_format='bzrlib.branch.BzrBranchFormat7',
3936
3799
tree_format='bzrlib.workingtree.WorkingTreeFormat4',
3939
3801
format_registry.register_metadir('1.9',
3940
3802
'bzrlib.repofmt.pack_repo.RepositoryFormatKnitPack6',
3943
3805
'performance for most operations.',
3944
3806
branch_format='bzrlib.branch.BzrBranchFormat7',
3945
3807
tree_format='bzrlib.workingtree.WorkingTreeFormat4',
3948
3809
format_registry.register_metadir('1.9-rich-root',
3949
3810
'bzrlib.repofmt.pack_repo.RepositoryFormatKnitPack6RichRoot',
3951
3812
'(needed for bzr-svn and bzr-git).',
3952
3813
branch_format='bzrlib.branch.BzrBranchFormat7',
3953
3814
tree_format='bzrlib.workingtree.WorkingTreeFormat4',
3956
3816
format_registry.register_metadir('1.14',
3957
3817
'bzrlib.repofmt.pack_repo.RepositoryFormatKnitPack6',
3973
3833
'to and from rich-root-pack (and anything compatible with '
3974
3834
'rich-root-pack) format repositories. Repositories and branches in '
3975
3835
'this format can only be read by bzr.dev. Please read '
3976
'http://doc.bazaar.canonical.com/latest/developers/development-repo.html '
3836
'http://doc.bazaar-vcs.org/latest/developers/development-repo.html '
3978
3838
branch_format='bzrlib.branch.BzrBranchFormat7',
3979
3839
tree_format='bzrlib.workingtree.WorkingTreeFormat6',
3980
3840
experimental=True,
3984
3843
format_registry.register_metadir('development-subtree',
3985
3844
'bzrlib.repofmt.pack_repo.RepositoryFormatPackDevelopment2Subtree',
3987
3846
'from pack-0.92-subtree (and anything compatible with '
3988
3847
'pack-0.92-subtree) format repositories. Repositories and branches in '
3989
3848
'this format can only be read by bzr.dev. Please read '
3990
'http://doc.bazaar.canonical.com/latest/developers/development-repo.html '
3849
'http://doc.bazaar-vcs.org/latest/developers/development-repo.html '
3992
3851
branch_format='bzrlib.branch.BzrBranchFormat7',
3993
3852
tree_format='bzrlib.workingtree.WorkingTreeFormat6',
3994
3853
experimental=True,
3996
3854
alias=False, # Restore to being an alias when an actual development subtree format is added
3997
3855
# This current non-alias status is simply because we did not introduce a
3998
3856
# chk based subtree format.
4003
3861
'bzrlib.repofmt.groupcompress_repo.RepositoryFormatCHK1',
4004
3862
help='pack-1.9 with 255-way hashed CHK inv, group compress, rich roots '
4006
'http://doc.bazaar.canonical.com/latest/developers/development-repo.html '
3864
'http://doc.bazaar-vcs.org/latest/developers/development-repo.html '
4008
3866
branch_format='bzrlib.branch.BzrBranchFormat7',
4009
3867
tree_format='bzrlib.workingtree.WorkingTreeFormat6',
4015
3873
'bzrlib.repofmt.groupcompress_repo.RepositoryFormatCHK2',
4016
3874
help='pack-1.9 with 255-way hashed CHK inv, bencode revision, group compress, '
4017
3875
'rich roots. Please read '
4018
'http://doc.bazaar.canonical.com/latest/developers/development-repo.html '
3876
'http://doc.bazaar-vcs.org/latest/developers/development-repo.html '
4020
3878
branch_format='bzrlib.branch.BzrBranchFormat7',
4021
3879
tree_format='bzrlib.workingtree.WorkingTreeFormat6',
added
removed
bzrlib/bzrdir.py
