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# Copyright (C) 2005, 2006, 2007, 2008 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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"""BzrDir logic. The BzrDir is the basic control directory used by bzr.
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At format 7 this was split out into Branch, Repository and Checkout control
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Note: This module has a lot of ``open`` functions/methods that return
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references to in-memory objects. As a rule, there are no matching ``close``
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methods. To free any associated resources, simply stop referencing the
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# TODO: Move old formats into a plugin to make this file smaller.
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from cStringIO import StringIO
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from bzrlib.lazy_import import lazy_import
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lazy_import(globals(), """
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from stat import S_ISDIR
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from warnings import warn
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revision as _mod_revision,
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from bzrlib.osutils import (
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from bzrlib.repository import Repository
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from bzrlib.smart.client import _SmartClient
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from bzrlib.smart import protocol
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from bzrlib.store.versioned import WeaveStore
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from bzrlib.transactions import WriteTransaction
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from bzrlib.transport import (
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do_catching_redirections,
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from bzrlib.weave import Weave
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from bzrlib.trace import (
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from bzrlib.transport.local import LocalTransport
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from bzrlib.symbol_versioning import (
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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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found within .bzr - checkouts, branches and repositories.
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the transport which this bzr dir is rooted at (i.e. file:///.../.bzr/)
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a transport connected to the directory this bzr was opened from
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(i.e. the parent directory holding the .bzr directory).
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Everything in the bzrdir should have the same file permissions.
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def break_lock(self):
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"""Invoke break_lock on the first object in the bzrdir.
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If there is a tree, the tree is opened and break_lock() called.
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Otherwise, branch is tried, and finally repository.
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# XXX: This seems more like a UI function than something that really
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# belongs in this class.
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thing_to_unlock = self.open_workingtree()
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except (errors.NotLocalUrl, errors.NoWorkingTree):
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thing_to_unlock = self.open_branch()
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except errors.NotBranchError:
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thing_to_unlock = self.open_repository()
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except errors.NoRepositoryPresent:
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thing_to_unlock.break_lock()
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def can_convert_format(self):
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"""Return true if this bzrdir is one whose format we can convert from."""
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def check_conversion_target(self, target_format):
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target_repo_format = target_format.repository_format
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source_repo_format = self._format.repository_format
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source_repo_format.check_conversion_target(target_repo_format)
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def _check_supported(format, allow_unsupported,
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recommend_upgrade=True,
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"""Give an error or warning on old formats.
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:param format: may be any kind of format - workingtree, branch,
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:param allow_unsupported: If true, allow opening
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formats that are strongly deprecated, and which may
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have limited functionality.
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:param recommend_upgrade: If true (default), warn
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the user through the ui object that they may wish
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to upgrade the object.
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# TODO: perhaps move this into a base Format class; it's not BzrDir
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# specific. mbp 20070323
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if not allow_unsupported and not format.is_supported():
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# see open_downlevel to open legacy branches.
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raise errors.UnsupportedFormatError(format=format)
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if recommend_upgrade \
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and getattr(format, 'upgrade_recommended', False):
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ui.ui_factory.recommend_upgrade(
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format.get_format_description(),
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def clone(self, url, revision_id=None, force_new_repo=False,
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preserve_stacking=False):
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"""Clone this bzrdir and its contents to url verbatim.
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:param url: The url create the clone at. If url's last component does
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not exist, it will be created.
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:param revision_id: The tip revision-id to use for any branch or
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working tree. If not None, then the clone operation may tune
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itself to download less data.
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:param force_new_repo: Do not use a shared repository for the target
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even if one is available.
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:param preserve_stacking: When cloning a stacked branch, stack the
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new branch on top of the other branch's stacked-on branch.
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return self.clone_on_transport(get_transport(url),
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revision_id=revision_id,
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force_new_repo=force_new_repo,
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preserve_stacking=preserve_stacking)
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def clone_on_transport(self, transport, revision_id=None,
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force_new_repo=False, preserve_stacking=False):
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"""Clone this bzrdir and its contents to transport verbatim.
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:param transport: The transport for the location to produce the clone
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at. If the target directory does not exist, it will be created.
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:param revision_id: The tip revision-id to use for any branch or
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working tree. If not None, then the clone operation may tune
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itself to download less data.
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:param force_new_repo: Do not use a shared repository for the target,
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even if one is available.
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:param preserve_stacking: When cloning a stacked branch, stack the
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new branch on top of the other branch's stacked-on branch.
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transport.ensure_base()
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result = self.cloning_metadir().initialize_on_transport(transport)
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repository_policy = None
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local_repo = self.find_repository()
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except errors.NoRepositoryPresent:
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local_branch = self.open_branch()
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except errors.NotBranchError:
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# enable fallbacks when branch is not a branch reference
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if local_branch.repository.has_same_location(local_repo):
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local_repo = local_branch.repository
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if preserve_stacking:
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stack_on = local_branch.get_stacked_on_url()
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except (errors.UnstackableBranchFormat,
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errors.UnstackableRepositoryFormat,
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# may need to copy content in
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repository_policy = result.determine_repository_policy(
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force_new_repo, stack_on, self.root_transport.base)
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make_working_trees = local_repo.make_working_trees()
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result_repo = repository_policy.acquire_repository(
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make_working_trees, local_repo.is_shared())
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result_repo.fetch(local_repo, revision_id=revision_id)
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# 1 if there is a branch present
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# make sure its content is available in the target repository
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if local_branch is not None:
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result_branch = local_branch.clone(result, revision_id=revision_id)
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if repository_policy is not None:
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repository_policy.configure_branch(result_branch)
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if result_repo is None or result_repo.make_working_trees():
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self.open_workingtree().clone(result)
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except (errors.NoWorkingTree, errors.NotLocalUrl):
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# TODO: This should be given a Transport, and should chdir up; otherwise
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# this will open a new connection.
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def _make_tail(self, url):
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t = get_transport(url)
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def create(cls, base, format=None, possible_transports=None):
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"""Create a new BzrDir at the url 'base'.
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:param format: If supplied, the format of branch to create. If not
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supplied, the default is used.
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:param possible_transports: If supplied, a list of transports that
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can be reused to share a remote connection.
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if cls is not BzrDir:
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raise AssertionError("BzrDir.create always creates the default"
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" format, not one of %r" % cls)
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t = get_transport(base, possible_transports)
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format = BzrDirFormat.get_default_format()
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return format.initialize_on_transport(t)
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def find_bzrdirs(transport, evaluate=None, list_current=None):
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"""Find bzrdirs recursively from current location.
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This is intended primarily as a building block for more sophisticated
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functionality, like finding trees under a directory, or finding
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branches that use a given repository.
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:param evaluate: An optional callable that yields recurse, value,
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where recurse controls whether this bzrdir is recursed into
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and value is the value to yield. By default, all bzrdirs
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are recursed into, and the return value is the bzrdir.
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:param list_current: if supplied, use this function to list the current
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directory, instead of Transport.list_dir
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:return: a generator of found bzrdirs, or whatever evaluate returns.
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if list_current is None:
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def list_current(transport):
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return transport.list_dir('')
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def evaluate(bzrdir):
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pending = [transport]
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while len(pending) > 0:
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current_transport = pending.pop()
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bzrdir = BzrDir.open_from_transport(current_transport)
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except errors.NotBranchError:
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recurse, value = evaluate(bzrdir)
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subdirs = list_current(current_transport)
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except errors.NoSuchFile:
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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 find_branches(transport):
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"""Find all branches under a transport.
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This will find all branches below the transport, including branches
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inside other branches. Where possible, it will use
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Repository.find_branches.
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To list all the branches that use a particular Repository, see
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Repository.find_branches
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def evaluate(bzrdir):
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repository = bzrdir.open_repository()
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except errors.NoRepositoryPresent:
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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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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):
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"""Create a branch in this BzrDir.
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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):
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"""Destroy the branch in this BzrDir"""
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raise NotImplementedError(self.destroy_branch)
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def create_branch_and_repo(base, force_new_repo=False, format=None):
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"""Create a new BzrDir, Branch and Repository at the url 'base'.
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This will use the current default BzrDirFormat unless one is
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specified, and use whatever
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repository format that that uses via bzrdir.create_branch and
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create_repository. If a shared repository is available that is used
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The created Branch object is returned.
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:param base: The URL to create the branch at.
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:param force_new_repo: If True a new repository is always created.
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:param format: If supplied, the format of branch to create. If not
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supplied, the default is used.
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bzrdir = BzrDir.create(base, format)
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bzrdir._find_or_create_repository(force_new_repo)
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return bzrdir.create_branch()
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def determine_repository_policy(self, force_new_repo=False, stack_on=None,
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stack_on_pwd=None, require_stacking=False):
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"""Return an object representing a policy to use.
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This controls whether a new repository is created, or a shared
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repository used instead.
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If stack_on is supplied, will not seek a containing shared repo.
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:param force_new_repo: If True, require a new repository to be created.
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:param stack_on: If supplied, the location to stack on. If not
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supplied, a default_stack_on location may be used.
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:param stack_on_pwd: If stack_on is relative, the location it is
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def repository_policy(found_bzrdir):
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# does it have a repository ?
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repository = found_bzrdir.open_repository()
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except errors.NoRepositoryPresent:
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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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return UseExistingRepository(repository, stack_on,
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stack_on_pwd, require_stacking=require_stacking), True
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return CreateRepository(self, stack_on, stack_on_pwd,
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require_stacking=require_stacking), True
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if not force_new_repo:
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policy = self._find_containing(repository_policy)
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if policy is not None:
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return UseExistingRepository(self.open_repository(),
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stack_on, stack_on_pwd,
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require_stacking=require_stacking)
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except errors.NoRepositoryPresent:
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return CreateRepository(self, stack_on, stack_on_pwd,
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require_stacking=require_stacking)
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def _find_or_create_repository(self, force_new_repo):
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"""Create a new repository if needed, returning the repository."""
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policy = self.determine_repository_policy(force_new_repo)
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return policy.acquire_repository()
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def create_branch_convenience(base, force_new_repo=False,
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force_new_tree=None, format=None,
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possible_transports=None):
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"""Create a new BzrDir, Branch and Repository at the url 'base'.
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This is a convenience function - it will use an existing repository
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if possible, can be told explicitly whether to create a working tree or
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This will use the current default BzrDirFormat unless one is
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specified, and use whatever
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repository format that that uses via bzrdir.create_branch and
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create_repository. If a shared repository is available that is used
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preferentially. Whatever repository is used, its tree creation policy
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The created Branch object is returned.
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If a working tree cannot be made due to base not being a file:// url,
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no error is raised unless force_new_tree is True, in which case no
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data is created on disk and NotLocalUrl is raised.
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:param base: The URL to create the branch at.
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:param force_new_repo: If True a new repository is always created.
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:param force_new_tree: If True or False force creation of a tree or
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prevent such creation respectively.
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:param format: Override for the bzrdir format to create.
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:param possible_transports: An optional reusable transports list.
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# check for non local urls
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t = get_transport(base, possible_transports)
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if not isinstance(t, LocalTransport):
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raise errors.NotLocalUrl(base)
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bzrdir = BzrDir.create(base, format, possible_transports)
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repo = bzrdir._find_or_create_repository(force_new_repo)
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result = bzrdir.create_branch()
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if force_new_tree or (repo.make_working_trees() and
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force_new_tree is None):
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bzrdir.create_workingtree()
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except errors.NotLocalUrl:
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def create_standalone_workingtree(base, format=None):
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"""Create a new BzrDir, WorkingTree, Branch and Repository at 'base'.
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'base' must be a local path or a file:// url.
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This will use the current default BzrDirFormat unless one is
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specified, and use whatever
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repository format that that uses for bzrdirformat.create_workingtree,
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create_branch and create_repository.
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:param format: Override for the bzrdir format to create.
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:return: The WorkingTree object.
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t = get_transport(base)
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if not isinstance(t, LocalTransport):
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raise errors.NotLocalUrl(base)
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bzrdir = BzrDir.create_branch_and_repo(base,
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format=format).bzrdir
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return bzrdir.create_workingtree()
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def create_workingtree(self, revision_id=None, from_branch=None,
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accelerator_tree=None, hardlink=False):
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"""Create a working tree at this BzrDir.
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:param revision_id: create it as of this revision id.
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:param from_branch: override bzrdir branch (for lightweight checkouts)
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:param accelerator_tree: A tree which can be used for retrieving file
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contents more quickly than the revision tree, i.e. a workingtree.
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The revision tree will be used for cases where accelerator_tree's
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content is different.
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raise NotImplementedError(self.create_workingtree)
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def retire_bzrdir(self, limit=10000):
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"""Permanently disable the bzrdir.
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This is done by renaming it to give the user some ability to recover
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if there was a problem.
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This will have horrible consequences if anyone has anything locked or
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:param limit: number of times to retry
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to_path = '.bzr.retired.%d' % i
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self.root_transport.rename('.bzr', to_path)
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note("renamed %s to %s"
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% (self.root_transport.abspath('.bzr'), to_path))
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except (errors.TransportError, IOError, errors.PathError):
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def destroy_workingtree(self):
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"""Destroy the working tree at this BzrDir.
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Formats that do not support this may raise UnsupportedOperation.
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raise NotImplementedError(self.destroy_workingtree)
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def destroy_workingtree_metadata(self):
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"""Destroy the control files for the working tree at this BzrDir.
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The contents of working tree files are not affected.
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Formats that do not support this may raise UnsupportedOperation.
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raise NotImplementedError(self.destroy_workingtree_metadata)
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def _find_containing(self, evaluate):
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"""Find something in a containing control directory.
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This method will scan containing control dirs, until it finds what
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it is looking for, decides that it will never find it, or runs out
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of containing control directories to check.
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It is used to implement find_repository and
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determine_repository_policy.
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:param evaluate: A function returning (value, stop). If stop is True,
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the value will be returned.
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result, stop = evaluate(found_bzrdir)
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next_transport = found_bzrdir.root_transport.clone('..')
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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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found_bzrdir = BzrDir.open_containing_from_transport(
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except errors.NotBranchError:
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def find_repository(self):
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"""Find the repository that should be used.
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This does not require a branch as we use it to find the repo for
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new branches as well as to hook existing branches up to their
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def usable_repository(found_bzrdir):
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# does it have a repository ?
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repository = found_bzrdir.open_repository()
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except errors.NoRepositoryPresent:
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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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found_repo = self._find_containing(usable_repository)
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if found_repo is None:
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raise errors.NoRepositoryPresent(self)
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def get_branch_reference(self):
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"""Return the referenced URL for the branch in this bzrdir.
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:raises NotBranchError: If there is no Branch.
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:return: The URL the branch in this bzrdir references if it is a
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reference branch, or None for regular branches.
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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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IncompatibleFormat if the branch format they are given has
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a format string, and vice versa.
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If branch_format is None, the transport is returned with no
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checking. If it is not None, then the returned transport is
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guaranteed to point to an existing directory ready for use.
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raise NotImplementedError(self.get_branch_transport)
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def _find_creation_modes(self):
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"""Determine the appropriate modes for files and directories.
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They're always set to be consistent with the base directory,
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assuming that this transport allows setting modes.
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# TODO: Do we need or want an option (maybe a config setting) to turn
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# this off or override it for particular locations? -- mbp 20080512
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if self._mode_check_done:
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self._mode_check_done = True
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st = self.transport.stat('.')
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except errors.TransportNotPossible:
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self._dir_mode = None
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self._file_mode = None
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# Check the directory mode, but also make sure the created
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# directories and files are read-write for this user. This is
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# mostly a workaround for filesystems which lie about being able to
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# write to a directory (cygwin & win32)
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self._dir_mode = (st.st_mode & 07777) | 00700
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# Remove the sticky and execute bits for files
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self._file_mode = self._dir_mode & ~07111
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def _get_file_mode(self):
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"""Return Unix mode for newly created files, or None.
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if not self._mode_check_done:
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self._find_creation_modes()
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return self._file_mode
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def _get_dir_mode(self):
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"""Return Unix mode for newly created directories, or None.
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if not self._mode_check_done:
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self._find_creation_modes()
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return self._dir_mode
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def get_repository_transport(self, repository_format):
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"""Get the transport for use by repository format in this BzrDir.
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Note that bzr dirs that do not support format strings will raise
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IncompatibleFormat if the repository format they are given has
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a format string, and vice versa.
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If repository_format is None, the transport is returned with no
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checking. If it is not None, then the returned transport is
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guaranteed to point to an existing directory ready for use.
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raise NotImplementedError(self.get_repository_transport)
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def get_workingtree_transport(self, tree_format):
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"""Get the transport for use by workingtree format in this BzrDir.
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Note that bzr dirs that do not support format strings will raise
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IncompatibleFormat if the workingtree format they are given has a
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format string, and vice versa.
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If workingtree_format is None, the transport is returned with no
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checking. If it is not None, then the returned transport is
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guaranteed to point to an existing directory ready for use.
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raise NotImplementedError(self.get_workingtree_transport)
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def get_config(self):
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if getattr(self, '_get_config', None) is None:
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return self._get_config()
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def __init__(self, _transport, _format):
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"""Initialize a Bzr control dir object.
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Only really common logic should reside here, concrete classes should be
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made with varying behaviours.
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:param _format: the format that is creating this BzrDir instance.
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:param _transport: the transport this dir is based at.
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self._format = _format
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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 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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:param filename: A filename within the root transport of this bzrdir.
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This is true IF and ONLY IF the filename is part of the namespace reserved
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for bzr control dirs. Currently this is the '.bzr' directory in the root
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of the root_transport. it is expected that plugins will need to extend
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this in the future - for instance to make bzr talk with svn working
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# this might be better on the BzrDirFormat class because it refers to
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# all the possible bzrdir disk formats.
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# This method is tested via the workingtree is_control_filename tests-
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# it was extracted from WorkingTree.is_control_filename. If the method's
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# contract is extended beyond the current trivial implementation, please
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# add new tests for it to the appropriate place.
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return filename == '.bzr' or filename.startswith('.bzr/')
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def needs_format_conversion(self, format=None):
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"""Return true if this bzrdir needs convert_format run on it.
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For instance, if the repository format is out of date but the
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branch and working tree are not, this should return True.
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:param format: Optional parameter indicating a specific desired
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format we plan to arrive at.
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raise NotImplementedError(self.needs_format_conversion)
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def open_unsupported(base):
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"""Open a branch which is not supported."""
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return BzrDir.open(base, _unsupported=True)
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def open(base, _unsupported=False, possible_transports=None):
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"""Open an existing bzrdir, rooted at 'base' (url).
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:param _unsupported: a private parameter to the BzrDir class.
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t = get_transport(base, possible_transports=possible_transports)
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return BzrDir.open_from_transport(t, _unsupported=_unsupported)
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def open_from_transport(transport, _unsupported=False,
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_server_formats=True):
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"""Open a bzrdir within a particular directory.
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:param transport: Transport containing the bzrdir.
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:param _unsupported: private.
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base = transport.base
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def find_format(transport):
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return transport, BzrDirFormat.find_format(
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transport, _server_formats=_server_formats)
772
def redirected(transport, e, redirection_notice):
773
qualified_source = e.get_source_url()
774
relpath = transport.relpath(qualified_source)
775
if not e.target.endswith(relpath):
776
# Not redirected to a branch-format, not a branch
777
raise errors.NotBranchError(path=e.target)
778
target = e.target[:-len(relpath)]
779
note('%s is%s redirected to %s',
780
transport.base, e.permanently, target)
781
# Let's try with a new transport
782
# FIXME: If 'transport' has a qualifier, this should
783
# be applied again to the new transport *iff* the
784
# schemes used are the same. Uncomment this code
785
# once the function (and tests) exist.
787
#target = urlutils.copy_url_qualifiers(original, target)
788
return get_transport(target)
791
transport, format = do_catching_redirections(find_format,
794
except errors.TooManyRedirections:
795
raise errors.NotBranchError(base)
797
BzrDir._check_supported(format, _unsupported)
798
return format.open(transport, _found=True)
800
def open_branch(self, unsupported=False):
801
"""Open the branch object at this BzrDir if one is present.
803
If unsupported is True, then no longer supported branch formats can
806
TODO: static convenience version of this?
808
raise NotImplementedError(self.open_branch)
811
def open_containing(url, possible_transports=None):
812
"""Open an existing branch which contains url.
814
:param url: url to search from.
815
See open_containing_from_transport for more detail.
817
transport = get_transport(url, possible_transports)
818
return BzrDir.open_containing_from_transport(transport)
821
def open_containing_from_transport(a_transport):
822
"""Open an existing branch which contains a_transport.base.
824
This probes for a branch at a_transport, and searches upwards from there.
826
Basically we keep looking up until we find the control directory or
827
run into the root. If there isn't one, raises NotBranchError.
828
If there is one and it is either an unrecognised format or an unsupported
829
format, UnknownFormatError or UnsupportedFormatError are raised.
830
If there is one, it is returned, along with the unused portion of url.
832
:return: The BzrDir that contains the path, and a Unicode path
833
for the rest of the URL.
835
# this gets the normalised url back. I.e. '.' -> the full path.
836
url = a_transport.base
839
result = BzrDir.open_from_transport(a_transport)
840
return result, urlutils.unescape(a_transport.relpath(url))
841
except errors.NotBranchError, e:
844
new_t = a_transport.clone('..')
845
except errors.InvalidURLJoin:
846
# reached the root, whatever that may be
847
raise errors.NotBranchError(path=url)
848
if new_t.base == a_transport.base:
849
# reached the root, whatever that may be
850
raise errors.NotBranchError(path=url)
853
def _get_tree_branch(self):
854
"""Return the branch and tree, if any, for this bzrdir.
856
Return None for tree if not present or inaccessible.
857
Raise NotBranchError if no branch is present.
858
:return: (tree, branch)
861
tree = self.open_workingtree()
862
except (errors.NoWorkingTree, errors.NotLocalUrl):
864
branch = self.open_branch()
870
def open_tree_or_branch(klass, location):
871
"""Return the branch and working tree at a location.
873
If there is no tree at the location, tree will be None.
874
If there is no branch at the location, an exception will be
876
:return: (tree, branch)
878
bzrdir = klass.open(location)
879
return bzrdir._get_tree_branch()
882
def open_containing_tree_or_branch(klass, location):
883
"""Return the branch and working tree contained by a location.
885
Returns (tree, branch, relpath).
886
If there is no tree at containing the location, tree will be None.
887
If there is no branch containing the location, an exception will be
889
relpath is the portion of the path that is contained by the branch.
891
bzrdir, relpath = klass.open_containing(location)
892
tree, branch = bzrdir._get_tree_branch()
893
return tree, branch, relpath
896
def open_containing_tree_branch_or_repository(klass, location):
897
"""Return the working tree, branch and repo contained by a location.
899
Returns (tree, branch, repository, relpath).
900
If there is no tree containing the location, tree will be None.
901
If there is no branch containing the location, branch will be None.
902
If there is no repository containing the location, repository will be
904
relpath is the portion of the path that is contained by the innermost
907
If no tree, branch or repository is found, a NotBranchError is raised.
909
bzrdir, relpath = klass.open_containing(location)
911
tree, branch = bzrdir._get_tree_branch()
912
except errors.NotBranchError:
914
repo = bzrdir.find_repository()
915
return None, None, repo, relpath
916
except (errors.NoRepositoryPresent):
917
raise errors.NotBranchError(location)
918
return tree, branch, branch.repository, relpath
920
def open_repository(self, _unsupported=False):
921
"""Open the repository object at this BzrDir if one is present.
923
This will not follow the Branch object pointer - it's strictly a direct
924
open facility. Most client code should use open_branch().repository to
927
:param _unsupported: a private parameter, not part of the api.
928
TODO: static convenience version of this?
930
raise NotImplementedError(self.open_repository)
932
def open_workingtree(self, _unsupported=False,
933
recommend_upgrade=True, from_branch=None):
934
"""Open the workingtree object at this BzrDir if one is present.
936
:param recommend_upgrade: Optional keyword parameter, when True (the
937
default), emit through the ui module a recommendation that the user
938
upgrade the working tree when the workingtree being opened is old
939
(but still fully supported).
940
:param from_branch: override bzrdir branch (for lightweight checkouts)
942
raise NotImplementedError(self.open_workingtree)
944
def has_branch(self):
945
"""Tell if this bzrdir contains a branch.
947
Note: if you're going to open the branch, you should just go ahead
948
and try, and not ask permission first. (This method just opens the
949
branch and discards it, and that's somewhat expensive.)
954
except errors.NotBranchError:
957
def has_workingtree(self):
958
"""Tell if this bzrdir contains a working tree.
960
This will still raise an exception if the bzrdir has a workingtree that
961
is remote & inaccessible.
963
Note: if you're going to open the working tree, you should just go ahead
964
and try, and not ask permission first. (This method just opens the
965
workingtree and discards it, and that's somewhat expensive.)
968
self.open_workingtree(recommend_upgrade=False)
970
except errors.NoWorkingTree:
973
def _cloning_metadir(self):
974
"""Produce a metadir suitable for cloning with.
976
:returns: (destination_bzrdir_format, source_repository)
978
result_format = self._format.__class__()
981
branch = self.open_branch()
982
source_repository = branch.repository
983
except errors.NotBranchError:
985
source_repository = self.open_repository()
986
except errors.NoRepositoryPresent:
987
source_repository = None
989
# XXX TODO: This isinstance is here because we have not implemented
990
# the fix recommended in bug # 103195 - to delegate this choice the
992
repo_format = source_repository._format
993
if not isinstance(repo_format, remote.RemoteRepositoryFormat):
994
result_format.repository_format = repo_format
996
# TODO: Couldn't we just probe for the format in these cases,
997
# rather than opening the whole tree? It would be a little
998
# faster. mbp 20070401
999
tree = self.open_workingtree(recommend_upgrade=False)
1000
except (errors.NoWorkingTree, errors.NotLocalUrl):
1001
result_format.workingtree_format = None
1003
result_format.workingtree_format = tree._format.__class__()
1004
return result_format, source_repository
1006
def cloning_metadir(self):
1007
"""Produce a metadir suitable for cloning or sprouting with.
1009
These operations may produce workingtrees (yes, even though they're
1010
"cloning" something that doesn't have a tree), so a viable workingtree
1011
format must be selected.
1013
:returns: a BzrDirFormat with all component formats either set
1014
appropriately or set to None if that component should not be
1017
format, repository = self._cloning_metadir()
1018
if format._workingtree_format is None:
1019
if repository is None:
1021
tree_format = repository._format._matchingbzrdir.workingtree_format
1022
format.workingtree_format = tree_format.__class__()
1025
def checkout_metadir(self):
1026
return self.cloning_metadir()
1028
def sprout(self, url, revision_id=None, force_new_repo=False,
1029
recurse='down', possible_transports=None,
1030
accelerator_tree=None, hardlink=False, stacked=False):
1031
"""Create a copy of this bzrdir prepared for use as a new line of
1034
If url's last component does not exist, it will be created.
1036
Attributes related to the identity of the source branch like
1037
branch nickname will be cleaned, a working tree is created
1038
whether one existed before or not; and a local branch is always
1041
if revision_id is not None, then the clone operation may tune
1042
itself to download less data.
1043
:param accelerator_tree: A tree which can be used for retrieving file
1044
contents more quickly than the revision tree, i.e. a workingtree.
1045
The revision tree will be used for cases where accelerator_tree's
1046
content is different.
1047
:param hardlink: If true, hard-link files from accelerator_tree,
1049
:param stacked: If true, create a stacked branch referring to the
1050
location of this control directory.
1052
target_transport = get_transport(url, possible_transports)
1053
target_transport.ensure_base()
1054
cloning_format = self.cloning_metadir()
1055
result = cloning_format.initialize_on_transport(target_transport)
1057
source_branch = self.open_branch()
1058
source_repository = source_branch.repository
1060
stacked_branch_url = self.root_transport.base
1062
# if a stacked branch wasn't requested, we don't create one
1063
# even if the origin was stacked
1064
stacked_branch_url = None
1065
except errors.NotBranchError:
1066
source_branch = None
1068
source_repository = self.open_repository()
1069
except errors.NoRepositoryPresent:
1070
source_repository = None
1071
stacked_branch_url = None
1072
repository_policy = result.determine_repository_policy(
1073
force_new_repo, stacked_branch_url, require_stacking=stacked)
1074
result_repo = repository_policy.acquire_repository()
1075
if source_repository is not None:
1076
# XXX: Isn't this redundant with the copy_content_into used below
1077
# after creating the branch? -- mbp 20080724
1078
result_repo.fetch(source_repository, revision_id=revision_id)
1080
# Create/update the result branch
1081
format_forced = False
1083
or repository_policy._require_stacking
1084
or repository_policy._stack_on)
1085
and not result._format.get_branch_format().supports_stacking()):
1086
# We need to make a stacked branch, but the default format for the
1087
# target doesn't support stacking. So force a branch that *can*
1089
from bzrlib.branch import BzrBranchFormat7
1090
format = BzrBranchFormat7()
1091
result_branch = format.initialize(result)
1092
mutter("using %r for stacking" % (format,))
1093
format_forced = True
1094
elif source_branch is None:
1095
# this is for sprouting a bzrdir without a branch; is that
1097
result_branch = result.create_branch()
1099
result_branch = source_branch.sprout(
1100
result, revision_id=revision_id)
1101
mutter("created new branch %r" % (result_branch,))
1102
repository_policy.configure_branch(result_branch)
1103
if source_branch is not None and format_forced:
1104
# XXX: this duplicates Branch.sprout(); it probably belongs on an
1105
# InterBranch method? -- mbp 20080724
1106
source_branch.copy_content_into(result_branch,
1107
revision_id=revision_id)
1108
result_branch.set_parent(self.root_transport.base)
1110
# Create/update the result working tree
1111
if isinstance(target_transport, LocalTransport) and (
1112
result_repo is None or result_repo.make_working_trees()):
1113
wt = result.create_workingtree(accelerator_tree=accelerator_tree,
1117
if wt.path2id('') is None:
1119
wt.set_root_id(self.open_workingtree.get_root_id())
1120
except errors.NoWorkingTree:
1126
if recurse == 'down':
1128
basis = wt.basis_tree()
1130
subtrees = basis.iter_references()
1131
elif source_branch is not None:
1132
basis = source_branch.basis_tree()
1134
subtrees = basis.iter_references()
1139
for path, file_id in subtrees:
1140
target = urlutils.join(url, urlutils.escape(path))
1141
sublocation = source_branch.reference_parent(file_id, path)
1142
sublocation.bzrdir.sprout(target,
1143
basis.get_reference_revision(file_id, path),
1144
force_new_repo=force_new_repo, recurse=recurse,
1147
if basis is not None:
1152
class BzrDirPreSplitOut(BzrDir):
1153
"""A common class for the all-in-one formats."""
1155
def __init__(self, _transport, _format):
1156
"""See BzrDir.__init__."""
1157
super(BzrDirPreSplitOut, self).__init__(_transport, _format)
1158
self._control_files = lockable_files.LockableFiles(
1159
self.get_branch_transport(None),
1160
self._format._lock_file_name,
1161
self._format._lock_class)
1163
def break_lock(self):
1164
"""Pre-splitout bzrdirs do not suffer from stale locks."""
1165
raise NotImplementedError(self.break_lock)
1167
def cloning_metadir(self):
1168
"""Produce a metadir suitable for cloning with."""
1169
return self._format.__class__()
1171
def clone(self, url, revision_id=None, force_new_repo=False,
1172
preserve_stacking=False):
1173
"""See BzrDir.clone().
1175
force_new_repo has no effect, since this family of formats always
1176
require a new repository.
1177
preserve_stacking has no effect, since no source branch using this
1178
family of formats can be stacked, so there is no stacking to preserve.
1180
from bzrlib.workingtree import WorkingTreeFormat2
1181
self._make_tail(url)
1182
result = self._format._initialize_for_clone(url)
1183
self.open_repository().clone(result, revision_id=revision_id)
1184
from_branch = self.open_branch()
1185
from_branch.clone(result, revision_id=revision_id)
1187
self.open_workingtree().clone(result)
1188
except errors.NotLocalUrl:
1189
# make a new one, this format always has to have one.
1191
WorkingTreeFormat2().initialize(result)
1192
except errors.NotLocalUrl:
1193
# but we cannot do it for remote trees.
1194
to_branch = result.open_branch()
1195
WorkingTreeFormat2()._stub_initialize_remote(to_branch)
1198
def create_branch(self):
1199
"""See BzrDir.create_branch."""
1200
return self.open_branch()
1202
def destroy_branch(self):
1203
"""See BzrDir.destroy_branch."""
1204
raise errors.UnsupportedOperation(self.destroy_branch, self)
1206
def create_repository(self, shared=False):
1207
"""See BzrDir.create_repository."""
1209
raise errors.IncompatibleFormat('shared repository', self._format)
1210
return self.open_repository()
1212
def destroy_repository(self):
1213
"""See BzrDir.destroy_repository."""
1214
raise errors.UnsupportedOperation(self.destroy_repository, self)
1216
def create_workingtree(self, revision_id=None, from_branch=None,
1217
accelerator_tree=None, hardlink=False):
1218
"""See BzrDir.create_workingtree."""
1219
# this looks buggy but is not -really-
1220
# because this format creates the workingtree when the bzrdir is
1222
# clone and sprout will have set the revision_id
1223
# and that will have set it for us, its only
1224
# specific uses of create_workingtree in isolation
1225
# that can do wonky stuff here, and that only
1226
# happens for creating checkouts, which cannot be
1227
# done on this format anyway. So - acceptable wart.
1228
result = self.open_workingtree(recommend_upgrade=False)
1229
if revision_id is not None:
1230
if revision_id == _mod_revision.NULL_REVISION:
1231
result.set_parent_ids([])
1233
result.set_parent_ids([revision_id])
1236
def destroy_workingtree(self):
1237
"""See BzrDir.destroy_workingtree."""
1238
raise errors.UnsupportedOperation(self.destroy_workingtree, self)
1240
def destroy_workingtree_metadata(self):
1241
"""See BzrDir.destroy_workingtree_metadata."""
1242
raise errors.UnsupportedOperation(self.destroy_workingtree_metadata,
1245
def get_branch_transport(self, branch_format):
1246
"""See BzrDir.get_branch_transport()."""
1247
if branch_format is None:
1248
return self.transport
1250
branch_format.get_format_string()
1251
except NotImplementedError:
1252
return self.transport
1253
raise errors.IncompatibleFormat(branch_format, self._format)
1255
def get_repository_transport(self, repository_format):
1256
"""See BzrDir.get_repository_transport()."""
1257
if repository_format is None:
1258
return self.transport
1260
repository_format.get_format_string()
1261
except NotImplementedError:
1262
return self.transport
1263
raise errors.IncompatibleFormat(repository_format, self._format)
1265
def get_workingtree_transport(self, workingtree_format):
1266
"""See BzrDir.get_workingtree_transport()."""
1267
if workingtree_format is None:
1268
return self.transport
1270
workingtree_format.get_format_string()
1271
except NotImplementedError:
1272
return self.transport
1273
raise errors.IncompatibleFormat(workingtree_format, self._format)
1275
def needs_format_conversion(self, format=None):
1276
"""See BzrDir.needs_format_conversion()."""
1277
# if the format is not the same as the system default,
1278
# an upgrade is needed.
1280
format = BzrDirFormat.get_default_format()
1281
return not isinstance(self._format, format.__class__)
1283
def open_branch(self, unsupported=False):
1284
"""See BzrDir.open_branch."""
1285
from bzrlib.branch import BzrBranchFormat4
1286
format = BzrBranchFormat4()
1287
self._check_supported(format, unsupported)
1288
return format.open(self, _found=True)
1290
def sprout(self, url, revision_id=None, force_new_repo=False,
1291
possible_transports=None, accelerator_tree=None,
1292
hardlink=False, stacked=False):
1293
"""See BzrDir.sprout()."""
1295
raise errors.UnstackableBranchFormat(
1296
self._format, self.root_transport.base)
1297
from bzrlib.workingtree import WorkingTreeFormat2
1298
self._make_tail(url)
1299
result = self._format._initialize_for_clone(url)
1301
self.open_repository().clone(result, revision_id=revision_id)
1302
except errors.NoRepositoryPresent:
1305
self.open_branch().sprout(result, revision_id=revision_id)
1306
except errors.NotBranchError:
1308
# we always want a working tree
1309
WorkingTreeFormat2().initialize(result,
1310
accelerator_tree=accelerator_tree,
1315
class BzrDir4(BzrDirPreSplitOut):
1316
"""A .bzr version 4 control object.
1318
This is a deprecated format and may be removed after sept 2006.
1321
def create_repository(self, shared=False):
1322
"""See BzrDir.create_repository."""
1323
return self._format.repository_format.initialize(self, shared)
1325
def needs_format_conversion(self, format=None):
1326
"""Format 4 dirs are always in need of conversion."""
1329
def open_repository(self):
1330
"""See BzrDir.open_repository."""
1331
from bzrlib.repofmt.weaverepo import RepositoryFormat4
1332
return RepositoryFormat4().open(self, _found=True)
1335
class BzrDir5(BzrDirPreSplitOut):
1336
"""A .bzr version 5 control object.
1338
This is a deprecated format and may be removed after sept 2006.
1341
def open_repository(self):
1342
"""See BzrDir.open_repository."""
1343
from bzrlib.repofmt.weaverepo import RepositoryFormat5
1344
return RepositoryFormat5().open(self, _found=True)
1346
def open_workingtree(self, _unsupported=False,
1347
recommend_upgrade=True):
1348
"""See BzrDir.create_workingtree."""
1349
from bzrlib.workingtree import WorkingTreeFormat2
1350
wt_format = WorkingTreeFormat2()
1351
# we don't warn here about upgrades; that ought to be handled for the
1353
return wt_format.open(self, _found=True)
1356
class BzrDir6(BzrDirPreSplitOut):
1357
"""A .bzr version 6 control object.
1359
This is a deprecated format and may be removed after sept 2006.
1362
def open_repository(self):
1363
"""See BzrDir.open_repository."""
1364
from bzrlib.repofmt.weaverepo import RepositoryFormat6
1365
return RepositoryFormat6().open(self, _found=True)
1367
def open_workingtree(self, _unsupported=False,
1368
recommend_upgrade=True):
1369
"""See BzrDir.create_workingtree."""
1370
# we don't warn here about upgrades; that ought to be handled for the
1372
from bzrlib.workingtree import WorkingTreeFormat2
1373
return WorkingTreeFormat2().open(self, _found=True)
1376
class BzrDirMeta1(BzrDir):
1377
"""A .bzr meta version 1 control object.
1379
This is the first control object where the
1380
individual aspects are really split out: there are separate repository,
1381
workingtree and branch subdirectories and any subset of the three can be
1382
present within a BzrDir.
1385
def can_convert_format(self):
1386
"""See BzrDir.can_convert_format()."""
1389
def create_branch(self):
1390
"""See BzrDir.create_branch."""
1391
return self._format.get_branch_format().initialize(self)
1393
def destroy_branch(self):
1394
"""See BzrDir.create_branch."""
1395
self.transport.delete_tree('branch')
1397
def create_repository(self, shared=False):
1398
"""See BzrDir.create_repository."""
1399
return self._format.repository_format.initialize(self, shared)
1401
def destroy_repository(self):
1402
"""See BzrDir.destroy_repository."""
1403
self.transport.delete_tree('repository')
1405
def create_workingtree(self, revision_id=None, from_branch=None,
1406
accelerator_tree=None, hardlink=False):
1407
"""See BzrDir.create_workingtree."""
1408
return self._format.workingtree_format.initialize(
1409
self, revision_id, from_branch=from_branch,
1410
accelerator_tree=accelerator_tree, hardlink=hardlink)
1412
def destroy_workingtree(self):
1413
"""See BzrDir.destroy_workingtree."""
1414
wt = self.open_workingtree(recommend_upgrade=False)
1415
repository = wt.branch.repository
1416
empty = repository.revision_tree(_mod_revision.NULL_REVISION)
1417
wt.revert(old_tree=empty)
1418
self.destroy_workingtree_metadata()
1420
def destroy_workingtree_metadata(self):
1421
self.transport.delete_tree('checkout')
1423
def find_branch_format(self):
1424
"""Find the branch 'format' for this bzrdir.
1426
This might be a synthetic object for e.g. RemoteBranch and SVN.
1428
from bzrlib.branch import BranchFormat
1429
return BranchFormat.find_format(self)
1431
def _get_mkdir_mode(self):
1432
"""Figure out the mode to use when creating a bzrdir subdir."""
1433
temp_control = lockable_files.LockableFiles(self.transport, '',
1434
lockable_files.TransportLock)
1435
return temp_control._dir_mode
1437
def get_branch_reference(self):
1438
"""See BzrDir.get_branch_reference()."""
1439
from bzrlib.branch import BranchFormat
1440
format = BranchFormat.find_format(self)
1441
return format.get_reference(self)
1443
def get_branch_transport(self, branch_format):
1444
"""See BzrDir.get_branch_transport()."""
1445
if branch_format is None:
1446
return self.transport.clone('branch')
1448
branch_format.get_format_string()
1449
except NotImplementedError:
1450
raise errors.IncompatibleFormat(branch_format, self._format)
1452
self.transport.mkdir('branch', mode=self._get_mkdir_mode())
1453
except errors.FileExists:
1455
return self.transport.clone('branch')
1457
def get_repository_transport(self, repository_format):
1458
"""See BzrDir.get_repository_transport()."""
1459
if repository_format is None:
1460
return self.transport.clone('repository')
1462
repository_format.get_format_string()
1463
except NotImplementedError:
1464
raise errors.IncompatibleFormat(repository_format, self._format)
1466
self.transport.mkdir('repository', mode=self._get_mkdir_mode())
1467
except errors.FileExists:
1469
return self.transport.clone('repository')
1471
def get_workingtree_transport(self, workingtree_format):
1472
"""See BzrDir.get_workingtree_transport()."""
1473
if workingtree_format is None:
1474
return self.transport.clone('checkout')
1476
workingtree_format.get_format_string()
1477
except NotImplementedError:
1478
raise errors.IncompatibleFormat(workingtree_format, self._format)
1480
self.transport.mkdir('checkout', mode=self._get_mkdir_mode())
1481
except errors.FileExists:
1483
return self.transport.clone('checkout')
1485
def needs_format_conversion(self, format=None):
1486
"""See BzrDir.needs_format_conversion()."""
1488
format = BzrDirFormat.get_default_format()
1489
if not isinstance(self._format, format.__class__):
1490
# it is not a meta dir format, conversion is needed.
1492
# we might want to push this down to the repository?
1494
if not isinstance(self.open_repository()._format,
1495
format.repository_format.__class__):
1496
# the repository needs an upgrade.
1498
except errors.NoRepositoryPresent:
1501
if not isinstance(self.open_branch()._format,
1502
format.get_branch_format().__class__):
1503
# the branch needs an upgrade.
1505
except errors.NotBranchError:
1508
my_wt = self.open_workingtree(recommend_upgrade=False)
1509
if not isinstance(my_wt._format,
1510
format.workingtree_format.__class__):
1511
# the workingtree needs an upgrade.
1513
except (errors.NoWorkingTree, errors.NotLocalUrl):
1517
def open_branch(self, unsupported=False):
1518
"""See BzrDir.open_branch."""
1519
format = self.find_branch_format()
1520
self._check_supported(format, unsupported)
1521
return format.open(self, _found=True)
1523
def open_repository(self, unsupported=False):
1524
"""See BzrDir.open_repository."""
1525
from bzrlib.repository import RepositoryFormat
1526
format = RepositoryFormat.find_format(self)
1527
self._check_supported(format, unsupported)
1528
return format.open(self, _found=True)
1530
def open_workingtree(self, unsupported=False,
1531
recommend_upgrade=True):
1532
"""See BzrDir.open_workingtree."""
1533
from bzrlib.workingtree import WorkingTreeFormat
1534
format = WorkingTreeFormat.find_format(self)
1535
self._check_supported(format, unsupported,
1537
basedir=self.root_transport.base)
1538
return format.open(self, _found=True)
1540
def _get_config(self):
1541
return config.BzrDirConfig(self.transport)
1544
class BzrDirFormat(object):
1545
"""An encapsulation of the initialization and open routines for a format.
1547
Formats provide three things:
1548
* An initialization routine,
1552
Formats are placed in a dict by their format string for reference
1553
during bzrdir opening. These should be subclasses of BzrDirFormat
1556
Once a format is deprecated, just deprecate the initialize and open
1557
methods on the format class. Do not deprecate the object, as the
1558
object will be created every system load.
1561
_default_format = None
1562
"""The default format used for new .bzr dirs."""
1565
"""The known formats."""
1567
_control_formats = []
1568
"""The registered control formats - .bzr, ....
1570
This is a list of BzrDirFormat objects.
1573
_control_server_formats = []
1574
"""The registered control server formats, e.g. RemoteBzrDirs.
1576
This is a list of BzrDirFormat objects.
1579
_lock_file_name = 'branch-lock'
1581
# _lock_class must be set in subclasses to the lock type, typ.
1582
# TransportLock or LockDir
1585
def find_format(klass, transport, _server_formats=True):
1586
"""Return the format present at transport."""
1588
formats = klass._control_server_formats + klass._control_formats
1590
formats = klass._control_formats
1591
for format in formats:
1593
return format.probe_transport(transport)
1594
except errors.NotBranchError:
1595
# this format does not find a control dir here.
1597
raise errors.NotBranchError(path=transport.base)
1600
def probe_transport(klass, transport):
1601
"""Return the .bzrdir style format present in a directory."""
1603
format_string = transport.get(".bzr/branch-format").read()
1604
except errors.NoSuchFile:
1605
raise errors.NotBranchError(path=transport.base)
1608
return klass._formats[format_string]
1610
raise errors.UnknownFormatError(format=format_string, kind='bzrdir')
1613
def get_default_format(klass):
1614
"""Return the current default format."""
1615
return klass._default_format
1617
def get_format_string(self):
1618
"""Return the ASCII format string that identifies this format."""
1619
raise NotImplementedError(self.get_format_string)
1621
def get_format_description(self):
1622
"""Return the short description for this format."""
1623
raise NotImplementedError(self.get_format_description)
1625
def get_converter(self, format=None):
1626
"""Return the converter to use to convert bzrdirs needing converts.
1628
This returns a bzrlib.bzrdir.Converter object.
1630
This should return the best upgrader to step this format towards the
1631
current default format. In the case of plugins we can/should provide
1632
some means for them to extend the range of returnable converters.
1634
:param format: Optional format to override the default format of the
1637
raise NotImplementedError(self.get_converter)
1639
def initialize(self, url, possible_transports=None):
1640
"""Create a bzr control dir at this url and return an opened copy.
1642
Subclasses should typically override initialize_on_transport
1643
instead of this method.
1645
return self.initialize_on_transport(get_transport(url,
1646
possible_transports))
1648
def initialize_on_transport(self, transport):
1649
"""Initialize a new bzrdir in the base directory of a Transport."""
1650
# Since we don't have a .bzr directory, inherit the
1651
# mode from the root directory
1652
temp_control = lockable_files.LockableFiles(transport,
1653
'', lockable_files.TransportLock)
1654
temp_control._transport.mkdir('.bzr',
1655
# FIXME: RBC 20060121 don't peek under
1657
mode=temp_control._dir_mode)
1658
if sys.platform == 'win32' and isinstance(transport, LocalTransport):
1659
win32utils.set_file_attr_hidden(transport._abspath('.bzr'))
1660
file_mode = temp_control._file_mode
1662
bzrdir_transport = transport.clone('.bzr')
1663
utf8_files = [('README',
1664
"This is a Bazaar control directory.\n"
1665
"Do not change any files in this directory.\n"
1666
"See http://bazaar-vcs.org/ for more information about Bazaar.\n"),
1667
('branch-format', self.get_format_string()),
1669
# NB: no need to escape relative paths that are url safe.
1670
control_files = lockable_files.LockableFiles(bzrdir_transport,
1671
self._lock_file_name, self._lock_class)
1672
control_files.create_lock()
1673
control_files.lock_write()
1675
for (filename, content) in utf8_files:
1676
bzrdir_transport.put_bytes(filename, content,
1679
control_files.unlock()
1680
return self.open(transport, _found=True)
1682
def is_supported(self):
1683
"""Is this format supported?
1685
Supported formats must be initializable and openable.
1686
Unsupported formats may not support initialization or committing or
1687
some other features depending on the reason for not being supported.
1691
def same_model(self, target_format):
1692
return (self.repository_format.rich_root_data ==
1693
target_format.rich_root_data)
1696
def known_formats(klass):
1697
"""Return all the known formats.
1699
Concrete formats should override _known_formats.
1701
# There is double indirection here to make sure that control
1702
# formats used by more than one dir format will only be probed
1703
# once. This can otherwise be quite expensive for remote connections.
1705
for format in klass._control_formats:
1706
result.update(format._known_formats())
1710
def _known_formats(klass):
1711
"""Return the known format instances for this control format."""
1712
return set(klass._formats.values())
1714
def open(self, transport, _found=False):
1715
"""Return an instance of this format for the dir transport points at.
1717
_found is a private parameter, do not use it.
1720
found_format = BzrDirFormat.find_format(transport)
1721
if not isinstance(found_format, self.__class__):
1722
raise AssertionError("%s was asked to open %s, but it seems to need "
1724
% (self, transport, found_format))
1725
return self._open(transport)
1727
def _open(self, transport):
1728
"""Template method helper for opening BzrDirectories.
1730
This performs the actual open and any additional logic or parameter
1733
raise NotImplementedError(self._open)
1736
def register_format(klass, format):
1737
klass._formats[format.get_format_string()] = format
1740
def register_control_format(klass, format):
1741
"""Register a format that does not use '.bzr' for its control dir.
1743
TODO: This should be pulled up into a 'ControlDirFormat' base class
1744
which BzrDirFormat can inherit from, and renamed to register_format
1745
there. It has been done without that for now for simplicity of
1748
klass._control_formats.append(format)
1751
def register_control_server_format(klass, format):
1752
"""Register a control format for client-server environments.
1754
These formats will be tried before ones registered with
1755
register_control_format. This gives implementations that decide to the
1756
chance to grab it before anything looks at the contents of the format
1759
klass._control_server_formats.append(format)
1762
def _set_default_format(klass, format):
1763
"""Set default format (for testing behavior of defaults only)"""
1764
klass._default_format = format
1768
return self.get_format_string().rstrip()
1771
def unregister_format(klass, format):
1772
del klass._formats[format.get_format_string()]
1775
def unregister_control_format(klass, format):
1776
klass._control_formats.remove(format)
1779
class BzrDirFormat4(BzrDirFormat):
1780
"""Bzr dir format 4.
1782
This format is a combined format for working tree, branch and repository.
1784
- Format 1 working trees [always]
1785
- Format 4 branches [always]
1786
- Format 4 repositories [always]
1788
This format is deprecated: it indexes texts using a text it which is
1789
removed in format 5; write support for this format has been removed.
1792
_lock_class = lockable_files.TransportLock
1794
def get_format_string(self):
1795
"""See BzrDirFormat.get_format_string()."""
1796
return "Bazaar-NG branch, format 0.0.4\n"
1798
def get_format_description(self):
1799
"""See BzrDirFormat.get_format_description()."""
1800
return "All-in-one format 4"
1802
def get_converter(self, format=None):
1803
"""See BzrDirFormat.get_converter()."""
1804
# there is one and only one upgrade path here.
1805
return ConvertBzrDir4To5()
1807
def initialize_on_transport(self, transport):
1808
"""Format 4 branches cannot be created."""
1809
raise errors.UninitializableFormat(self)
1811
def is_supported(self):
1812
"""Format 4 is not supported.
1814
It is not supported because the model changed from 4 to 5 and the
1815
conversion logic is expensive - so doing it on the fly was not
1820
def _open(self, transport):
1821
"""See BzrDirFormat._open."""
1822
return BzrDir4(transport, self)
1824
def __return_repository_format(self):
1825
"""Circular import protection."""
1826
from bzrlib.repofmt.weaverepo import RepositoryFormat4
1827
return RepositoryFormat4()
1828
repository_format = property(__return_repository_format)
1831
class BzrDirFormat5(BzrDirFormat):
1832
"""Bzr control format 5.
1834
This format is a combined format for working tree, branch and repository.
1836
- Format 2 working trees [always]
1837
- Format 4 branches [always]
1838
- Format 5 repositories [always]
1839
Unhashed stores in the repository.
1842
_lock_class = lockable_files.TransportLock
1844
def get_format_string(self):
1845
"""See BzrDirFormat.get_format_string()."""
1846
return "Bazaar-NG branch, format 5\n"
1848
def get_format_description(self):
1849
"""See BzrDirFormat.get_format_description()."""
1850
return "All-in-one format 5"
1852
def get_converter(self, format=None):
1853
"""See BzrDirFormat.get_converter()."""
1854
# there is one and only one upgrade path here.
1855
return ConvertBzrDir5To6()
1857
def _initialize_for_clone(self, url):
1858
return self.initialize_on_transport(get_transport(url), _cloning=True)
1860
def initialize_on_transport(self, transport, _cloning=False):
1861
"""Format 5 dirs always have working tree, branch and repository.
1863
Except when they are being cloned.
1865
from bzrlib.branch import BzrBranchFormat4
1866
from bzrlib.repofmt.weaverepo import RepositoryFormat5
1867
from bzrlib.workingtree import WorkingTreeFormat2
1868
result = (super(BzrDirFormat5, self).initialize_on_transport(transport))
1869
RepositoryFormat5().initialize(result, _internal=True)
1871
branch = BzrBranchFormat4().initialize(result)
1873
WorkingTreeFormat2().initialize(result)
1874
except errors.NotLocalUrl:
1875
# Even though we can't access the working tree, we need to
1876
# create its control files.
1877
WorkingTreeFormat2()._stub_initialize_remote(branch)
1880
def _open(self, transport):
1881
"""See BzrDirFormat._open."""
1882
return BzrDir5(transport, self)
1884
def __return_repository_format(self):
1885
"""Circular import protection."""
1886
from bzrlib.repofmt.weaverepo import RepositoryFormat5
1887
return RepositoryFormat5()
1888
repository_format = property(__return_repository_format)
1891
class BzrDirFormat6(BzrDirFormat):
1892
"""Bzr control format 6.
1894
This format is a combined format for working tree, branch and repository.
1896
- Format 2 working trees [always]
1897
- Format 4 branches [always]
1898
- Format 6 repositories [always]
1901
_lock_class = lockable_files.TransportLock
1903
def get_format_string(self):
1904
"""See BzrDirFormat.get_format_string()."""
1905
return "Bazaar-NG branch, format 6\n"
1907
def get_format_description(self):
1908
"""See BzrDirFormat.get_format_description()."""
1909
return "All-in-one format 6"
1911
def get_converter(self, format=None):
1912
"""See BzrDirFormat.get_converter()."""
1913
# there is one and only one upgrade path here.
1914
return ConvertBzrDir6ToMeta()
1916
def _initialize_for_clone(self, url):
1917
return self.initialize_on_transport(get_transport(url), _cloning=True)
1919
def initialize_on_transport(self, transport, _cloning=False):
1920
"""Format 6 dirs always have working tree, branch and repository.
1922
Except when they are being cloned.
1924
from bzrlib.branch import BzrBranchFormat4
1925
from bzrlib.repofmt.weaverepo import RepositoryFormat6
1926
from bzrlib.workingtree import WorkingTreeFormat2
1927
result = super(BzrDirFormat6, self).initialize_on_transport(transport)
1928
RepositoryFormat6().initialize(result, _internal=True)
1930
branch = BzrBranchFormat4().initialize(result)
1932
WorkingTreeFormat2().initialize(result)
1933
except errors.NotLocalUrl:
1934
# Even though we can't access the working tree, we need to
1935
# create its control files.
1936
WorkingTreeFormat2()._stub_initialize_remote(branch)
1939
def _open(self, transport):
1940
"""See BzrDirFormat._open."""
1941
return BzrDir6(transport, self)
1943
def __return_repository_format(self):
1944
"""Circular import protection."""
1945
from bzrlib.repofmt.weaverepo import RepositoryFormat6
1946
return RepositoryFormat6()
1947
repository_format = property(__return_repository_format)
1950
class BzrDirMetaFormat1(BzrDirFormat):
1951
"""Bzr meta control format 1
1953
This is the first format with split out working tree, branch and repository
1956
- Format 3 working trees [optional]
1957
- Format 5 branches [optional]
1958
- Format 7 repositories [optional]
1961
_lock_class = lockdir.LockDir
1964
self._workingtree_format = None
1965
self._branch_format = None
1967
def __eq__(self, other):
1968
if other.__class__ is not self.__class__:
1970
if other.repository_format != self.repository_format:
1972
if other.workingtree_format != self.workingtree_format:
1976
def __ne__(self, other):
1977
return not self == other
1979
def get_branch_format(self):
1980
if self._branch_format is None:
1981
from bzrlib.branch import BranchFormat
1982
self._branch_format = BranchFormat.get_default_format()
1983
return self._branch_format
1985
def set_branch_format(self, format):
1986
self._branch_format = format
1988
def get_converter(self, format=None):
1989
"""See BzrDirFormat.get_converter()."""
1991
format = BzrDirFormat.get_default_format()
1992
if not isinstance(self, format.__class__):
1993
# converting away from metadir is not implemented
1994
raise NotImplementedError(self.get_converter)
1995
return ConvertMetaToMeta(format)
1997
def get_format_string(self):
1998
"""See BzrDirFormat.get_format_string()."""
1999
return "Bazaar-NG meta directory, format 1\n"
2001
def get_format_description(self):
2002
"""See BzrDirFormat.get_format_description()."""
2003
return "Meta directory format 1"
2005
def _open(self, transport):
2006
"""See BzrDirFormat._open."""
2007
return BzrDirMeta1(transport, self)
2009
def __return_repository_format(self):
2010
"""Circular import protection."""
2011
if getattr(self, '_repository_format', None):
2012
return self._repository_format
2013
from bzrlib.repository import RepositoryFormat
2014
return RepositoryFormat.get_default_format()
2016
def __set_repository_format(self, value):
2017
"""Allow changing the repository format for metadir formats."""
2018
self._repository_format = value
2020
repository_format = property(__return_repository_format, __set_repository_format)
2022
def __get_workingtree_format(self):
2023
if self._workingtree_format is None:
2024
from bzrlib.workingtree import WorkingTreeFormat
2025
self._workingtree_format = WorkingTreeFormat.get_default_format()
2026
return self._workingtree_format
2028
def __set_workingtree_format(self, wt_format):
2029
self._workingtree_format = wt_format
2031
workingtree_format = property(__get_workingtree_format,
2032
__set_workingtree_format)
2035
# Register bzr control format
2036
BzrDirFormat.register_control_format(BzrDirFormat)
2038
# Register bzr formats
2039
BzrDirFormat.register_format(BzrDirFormat4())
2040
BzrDirFormat.register_format(BzrDirFormat5())
2041
BzrDirFormat.register_format(BzrDirFormat6())
2042
__default_format = BzrDirMetaFormat1()
2043
BzrDirFormat.register_format(__default_format)
2044
BzrDirFormat._default_format = __default_format
2047
class Converter(object):
2048
"""Converts a disk format object from one format to another."""
2050
def convert(self, to_convert, pb):
2051
"""Perform the conversion of to_convert, giving feedback via pb.
2053
:param to_convert: The disk object to convert.
2054
:param pb: a progress bar to use for progress information.
2057
def step(self, message):
2058
"""Update the pb by a step."""
2060
self.pb.update(message, self.count, self.total)
2063
class ConvertBzrDir4To5(Converter):
2064
"""Converts format 4 bzr dirs to format 5."""
2067
super(ConvertBzrDir4To5, self).__init__()
2068
self.converted_revs = set()
2069
self.absent_revisions = set()
2073
def convert(self, to_convert, pb):
2074
"""See Converter.convert()."""
2075
self.bzrdir = to_convert
2077
self.pb.note('starting upgrade from format 4 to 5')
2078
if isinstance(self.bzrdir.transport, LocalTransport):
2079
self.bzrdir.get_workingtree_transport(None).delete('stat-cache')
2080
self._convert_to_weaves()
2081
return BzrDir.open(self.bzrdir.root_transport.base)
2083
def _convert_to_weaves(self):
2084
self.pb.note('note: upgrade may be faster if all store files are ungzipped first')
2087
stat = self.bzrdir.transport.stat('weaves')
2088
if not S_ISDIR(stat.st_mode):
2089
self.bzrdir.transport.delete('weaves')
2090
self.bzrdir.transport.mkdir('weaves')
2091
except errors.NoSuchFile:
2092
self.bzrdir.transport.mkdir('weaves')
2093
# deliberately not a WeaveFile as we want to build it up slowly.
2094
self.inv_weave = Weave('inventory')
2095
# holds in-memory weaves for all files
2096
self.text_weaves = {}
2097
self.bzrdir.transport.delete('branch-format')
2098
self.branch = self.bzrdir.open_branch()
2099
self._convert_working_inv()
2100
rev_history = self.branch.revision_history()
2101
# to_read is a stack holding the revisions we still need to process;
2102
# appending to it adds new highest-priority revisions
2103
self.known_revisions = set(rev_history)
2104
self.to_read = rev_history[-1:]
2106
rev_id = self.to_read.pop()
2107
if (rev_id not in self.revisions
2108
and rev_id not in self.absent_revisions):
2109
self._load_one_rev(rev_id)
2111
to_import = self._make_order()
2112
for i, rev_id in enumerate(to_import):
2113
self.pb.update('converting revision', i, len(to_import))
2114
self._convert_one_rev(rev_id)
2116
self._write_all_weaves()
2117
self._write_all_revs()
2118
self.pb.note('upgraded to weaves:')
2119
self.pb.note(' %6d revisions and inventories', len(self.revisions))
2120
self.pb.note(' %6d revisions not present', len(self.absent_revisions))
2121
self.pb.note(' %6d texts', self.text_count)
2122
self._cleanup_spare_files_after_format4()
2123
self.branch._transport.put_bytes(
2125
BzrDirFormat5().get_format_string(),
2126
mode=self.bzrdir._get_file_mode())
2128
def _cleanup_spare_files_after_format4(self):
2129
# FIXME working tree upgrade foo.
2130
for n in 'merged-patches', 'pending-merged-patches':
2132
## assert os.path.getsize(p) == 0
2133
self.bzrdir.transport.delete(n)
2134
except errors.NoSuchFile:
2136
self.bzrdir.transport.delete_tree('inventory-store')
2137
self.bzrdir.transport.delete_tree('text-store')
2139
def _convert_working_inv(self):
2140
inv = xml4.serializer_v4.read_inventory(
2141
self.branch._transport.get('inventory'))
2142
new_inv_xml = xml5.serializer_v5.write_inventory_to_string(inv, working=True)
2143
self.branch._transport.put_bytes('inventory', new_inv_xml,
2144
mode=self.bzrdir._get_file_mode())
2146
def _write_all_weaves(self):
2147
controlweaves = WeaveStore(self.bzrdir.transport, prefixed=False)
2148
weave_transport = self.bzrdir.transport.clone('weaves')
2149
weaves = WeaveStore(weave_transport, prefixed=False)
2150
transaction = WriteTransaction()
2154
for file_id, file_weave in self.text_weaves.items():
2155
self.pb.update('writing weave', i, len(self.text_weaves))
2156
weaves._put_weave(file_id, file_weave, transaction)
2158
self.pb.update('inventory', 0, 1)
2159
controlweaves._put_weave('inventory', self.inv_weave, transaction)
2160
self.pb.update('inventory', 1, 1)
2164
def _write_all_revs(self):
2165
"""Write all revisions out in new form."""
2166
self.bzrdir.transport.delete_tree('revision-store')
2167
self.bzrdir.transport.mkdir('revision-store')
2168
revision_transport = self.bzrdir.transport.clone('revision-store')
2170
from bzrlib.xml5 import serializer_v5
2171
from bzrlib.repofmt.weaverepo import RevisionTextStore
2172
revision_store = RevisionTextStore(revision_transport,
2173
serializer_v5, False, versionedfile.PrefixMapper(),
2174
lambda:True, lambda:True)
2176
for i, rev_id in enumerate(self.converted_revs):
2177
self.pb.update('write revision', i, len(self.converted_revs))
2178
text = serializer_v5.write_revision_to_string(
2179
self.revisions[rev_id])
2181
revision_store.add_lines(key, None, osutils.split_lines(text))
2185
def _load_one_rev(self, rev_id):
2186
"""Load a revision object into memory.
2188
Any parents not either loaded or abandoned get queued to be
2190
self.pb.update('loading revision',
2191
len(self.revisions),
2192
len(self.known_revisions))
2193
if not self.branch.repository.has_revision(rev_id):
2195
self.pb.note('revision {%s} not present in branch; '
2196
'will be converted as a ghost',
2198
self.absent_revisions.add(rev_id)
2200
rev = self.branch.repository.get_revision(rev_id)
2201
for parent_id in rev.parent_ids:
2202
self.known_revisions.add(parent_id)
2203
self.to_read.append(parent_id)
2204
self.revisions[rev_id] = rev
2206
def _load_old_inventory(self, rev_id):
2207
old_inv_xml = self.branch.repository.inventory_store.get(rev_id).read()
2208
inv = xml4.serializer_v4.read_inventory_from_string(old_inv_xml)
2209
inv.revision_id = rev_id
2210
rev = self.revisions[rev_id]
2213
def _load_updated_inventory(self, rev_id):
2214
inv_xml = self.inv_weave.get_text(rev_id)
2215
inv = xml5.serializer_v5.read_inventory_from_string(inv_xml, rev_id)
2218
def _convert_one_rev(self, rev_id):
2219
"""Convert revision and all referenced objects to new format."""
2220
rev = self.revisions[rev_id]
2221
inv = self._load_old_inventory(rev_id)
2222
present_parents = [p for p in rev.parent_ids
2223
if p not in self.absent_revisions]
2224
self._convert_revision_contents(rev, inv, present_parents)
2225
self._store_new_inv(rev, inv, present_parents)
2226
self.converted_revs.add(rev_id)
2228
def _store_new_inv(self, rev, inv, present_parents):
2229
new_inv_xml = xml5.serializer_v5.write_inventory_to_string(inv)
2230
new_inv_sha1 = sha_string(new_inv_xml)
2231
self.inv_weave.add_lines(rev.revision_id,
2233
new_inv_xml.splitlines(True))
2234
rev.inventory_sha1 = new_inv_sha1
2236
def _convert_revision_contents(self, rev, inv, present_parents):
2237
"""Convert all the files within a revision.
2239
Also upgrade the inventory to refer to the text revision ids."""
2240
rev_id = rev.revision_id
2241
mutter('converting texts of revision {%s}',
2243
parent_invs = map(self._load_updated_inventory, present_parents)
2244
entries = inv.iter_entries()
2246
for path, ie in entries:
2247
self._convert_file_version(rev, ie, parent_invs)
2249
def _convert_file_version(self, rev, ie, parent_invs):
2250
"""Convert one version of one file.
2252
The file needs to be added into the weave if it is a merge
2253
of >=2 parents or if it's changed from its parent.
2255
file_id = ie.file_id
2256
rev_id = rev.revision_id
2257
w = self.text_weaves.get(file_id)
2260
self.text_weaves[file_id] = w
2261
text_changed = False
2262
parent_candiate_entries = ie.parent_candidates(parent_invs)
2263
heads = graph.Graph(self).heads(parent_candiate_entries.keys())
2264
# XXX: Note that this is unordered - and this is tolerable because
2265
# the previous code was also unordered.
2266
previous_entries = dict((head, parent_candiate_entries[head]) for head
2268
self.snapshot_ie(previous_entries, ie, w, rev_id)
2271
@symbol_versioning.deprecated_method(symbol_versioning.one_one)
2272
def get_parents(self, revision_ids):
2273
for revision_id in revision_ids:
2274
yield self.revisions[revision_id].parent_ids
2276
def get_parent_map(self, revision_ids):
2277
"""See graph._StackedParentsProvider.get_parent_map"""
2278
return dict((revision_id, self.revisions[revision_id])
2279
for revision_id in revision_ids
2280
if revision_id in self.revisions)
2282
def snapshot_ie(self, previous_revisions, ie, w, rev_id):
2283
# TODO: convert this logic, which is ~= snapshot to
2284
# a call to:. This needs the path figured out. rather than a work_tree
2285
# a v4 revision_tree can be given, or something that looks enough like
2286
# one to give the file content to the entry if it needs it.
2287
# and we need something that looks like a weave store for snapshot to
2289
#ie.snapshot(rev, PATH, previous_revisions, REVISION_TREE, InMemoryWeaveStore(self.text_weaves))
2290
if len(previous_revisions) == 1:
2291
previous_ie = previous_revisions.values()[0]
2292
if ie._unchanged(previous_ie):
2293
ie.revision = previous_ie.revision
2296
text = self.branch.repository._text_store.get(ie.text_id)
2297
file_lines = text.readlines()
2298
w.add_lines(rev_id, previous_revisions, file_lines)
2299
self.text_count += 1
2301
w.add_lines(rev_id, previous_revisions, [])
2302
ie.revision = rev_id
2304
def _make_order(self):
2305
"""Return a suitable order for importing revisions.
2307
The order must be such that an revision is imported after all
2308
its (present) parents.
2310
todo = set(self.revisions.keys())
2311
done = self.absent_revisions.copy()
2314
# scan through looking for a revision whose parents
2316
for rev_id in sorted(list(todo)):
2317
rev = self.revisions[rev_id]
2318
parent_ids = set(rev.parent_ids)
2319
if parent_ids.issubset(done):
2320
# can take this one now
2321
order.append(rev_id)
2327
class ConvertBzrDir5To6(Converter):
2328
"""Converts format 5 bzr dirs to format 6."""
2330
def convert(self, to_convert, pb):
2331
"""See Converter.convert()."""
2332
self.bzrdir = to_convert
2334
self.pb.note('starting upgrade from format 5 to 6')
2335
self._convert_to_prefixed()
2336
return BzrDir.open(self.bzrdir.root_transport.base)
2338
def _convert_to_prefixed(self):
2339
from bzrlib.store import TransportStore
2340
self.bzrdir.transport.delete('branch-format')
2341
for store_name in ["weaves", "revision-store"]:
2342
self.pb.note("adding prefixes to %s" % store_name)
2343
store_transport = self.bzrdir.transport.clone(store_name)
2344
store = TransportStore(store_transport, prefixed=True)
2345
for urlfilename in store_transport.list_dir('.'):
2346
filename = urlutils.unescape(urlfilename)
2347
if (filename.endswith(".weave") or
2348
filename.endswith(".gz") or
2349
filename.endswith(".sig")):
2350
file_id, suffix = os.path.splitext(filename)
2354
new_name = store._mapper.map((file_id,)) + suffix
2355
# FIXME keep track of the dirs made RBC 20060121
2357
store_transport.move(filename, new_name)
2358
except errors.NoSuchFile: # catches missing dirs strangely enough
2359
store_transport.mkdir(osutils.dirname(new_name))
2360
store_transport.move(filename, new_name)
2361
self.bzrdir.transport.put_bytes(
2363
BzrDirFormat6().get_format_string(),
2364
mode=self.bzrdir._get_file_mode())
2367
class ConvertBzrDir6ToMeta(Converter):
2368
"""Converts format 6 bzr dirs to metadirs."""
2370
def convert(self, to_convert, pb):
2371
"""See Converter.convert()."""
2372
from bzrlib.repofmt.weaverepo import RepositoryFormat7
2373
from bzrlib.branch import BzrBranchFormat5
2374
self.bzrdir = to_convert
2377
self.total = 20 # the steps we know about
2378
self.garbage_inventories = []
2379
self.dir_mode = self.bzrdir._get_dir_mode()
2380
self.file_mode = self.bzrdir._get_file_mode()
2382
self.pb.note('starting upgrade from format 6 to metadir')
2383
self.bzrdir.transport.put_bytes(
2385
"Converting to format 6",
2386
mode=self.file_mode)
2387
# its faster to move specific files around than to open and use the apis...
2388
# first off, nuke ancestry.weave, it was never used.
2390
self.step('Removing ancestry.weave')
2391
self.bzrdir.transport.delete('ancestry.weave')
2392
except errors.NoSuchFile:
2394
# find out whats there
2395
self.step('Finding branch files')
2396
last_revision = self.bzrdir.open_branch().last_revision()
2397
bzrcontents = self.bzrdir.transport.list_dir('.')
2398
for name in bzrcontents:
2399
if name.startswith('basis-inventory.'):
2400
self.garbage_inventories.append(name)
2401
# create new directories for repository, working tree and branch
2402
repository_names = [('inventory.weave', True),
2403
('revision-store', True),
2405
self.step('Upgrading repository ')
2406
self.bzrdir.transport.mkdir('repository', mode=self.dir_mode)
2407
self.make_lock('repository')
2408
# we hard code the formats here because we are converting into
2409
# the meta format. The meta format upgrader can take this to a
2410
# future format within each component.
2411
self.put_format('repository', RepositoryFormat7())
2412
for entry in repository_names:
2413
self.move_entry('repository', entry)
2415
self.step('Upgrading branch ')
2416
self.bzrdir.transport.mkdir('branch', mode=self.dir_mode)
2417
self.make_lock('branch')
2418
self.put_format('branch', BzrBranchFormat5())
2419
branch_files = [('revision-history', True),
2420
('branch-name', True),
2422
for entry in branch_files:
2423
self.move_entry('branch', entry)
2425
checkout_files = [('pending-merges', True),
2426
('inventory', True),
2427
('stat-cache', False)]
2428
# If a mandatory checkout file is not present, the branch does not have
2429
# a functional checkout. Do not create a checkout in the converted
2431
for name, mandatory in checkout_files:
2432
if mandatory and name not in bzrcontents:
2433
has_checkout = False
2437
if not has_checkout:
2438
self.pb.note('No working tree.')
2439
# If some checkout files are there, we may as well get rid of them.
2440
for name, mandatory in checkout_files:
2441
if name in bzrcontents:
2442
self.bzrdir.transport.delete(name)
2444
from bzrlib.workingtree import WorkingTreeFormat3
2445
self.step('Upgrading working tree')
2446
self.bzrdir.transport.mkdir('checkout', mode=self.dir_mode)
2447
self.make_lock('checkout')
2449
'checkout', WorkingTreeFormat3())
2450
self.bzrdir.transport.delete_multi(
2451
self.garbage_inventories, self.pb)
2452
for entry in checkout_files:
2453
self.move_entry('checkout', entry)
2454
if last_revision is not None:
2455
self.bzrdir.transport.put_bytes(
2456
'checkout/last-revision', last_revision)
2457
self.bzrdir.transport.put_bytes(
2459
BzrDirMetaFormat1().get_format_string(),
2460
mode=self.file_mode)
2461
return BzrDir.open(self.bzrdir.root_transport.base)
2463
def make_lock(self, name):
2464
"""Make a lock for the new control dir name."""
2465
self.step('Make %s lock' % name)
2466
ld = lockdir.LockDir(self.bzrdir.transport,
2468
file_modebits=self.file_mode,
2469
dir_modebits=self.dir_mode)
2472
def move_entry(self, new_dir, entry):
2473
"""Move then entry name into new_dir."""
2475
mandatory = entry[1]
2476
self.step('Moving %s' % name)
2478
self.bzrdir.transport.move(name, '%s/%s' % (new_dir, name))
2479
except errors.NoSuchFile:
2483
def put_format(self, dirname, format):
2484
self.bzrdir.transport.put_bytes('%s/format' % dirname,
2485
format.get_format_string(),
2489
class ConvertMetaToMeta(Converter):
2490
"""Converts the components of metadirs."""
2492
def __init__(self, target_format):
2493
"""Create a metadir to metadir converter.
2495
:param target_format: The final metadir format that is desired.
2497
self.target_format = target_format
2499
def convert(self, to_convert, pb):
2500
"""See Converter.convert()."""
2501
self.bzrdir = to_convert
2505
self.step('checking repository format')
2507
repo = self.bzrdir.open_repository()
2508
except errors.NoRepositoryPresent:
2511
if not isinstance(repo._format, self.target_format.repository_format.__class__):
2512
from bzrlib.repository import CopyConverter
2513
self.pb.note('starting repository conversion')
2514
converter = CopyConverter(self.target_format.repository_format)
2515
converter.convert(repo, pb)
2517
branch = self.bzrdir.open_branch()
2518
except errors.NotBranchError:
2521
# TODO: conversions of Branch and Tree should be done by
2522
# InterXFormat lookups/some sort of registry.
2523
# Avoid circular imports
2524
from bzrlib import branch as _mod_branch
2525
old = branch._format.__class__
2526
new = self.target_format.get_branch_format().__class__
2528
if (old == _mod_branch.BzrBranchFormat5 and
2529
new in (_mod_branch.BzrBranchFormat6,
2530
_mod_branch.BzrBranchFormat7)):
2531
branch_converter = _mod_branch.Converter5to6()
2532
elif (old == _mod_branch.BzrBranchFormat6 and
2533
new == _mod_branch.BzrBranchFormat7):
2534
branch_converter = _mod_branch.Converter6to7()
2536
raise errors.BadConversionTarget("No converter", new)
2537
branch_converter.convert(branch)
2538
branch = self.bzrdir.open_branch()
2539
old = branch._format.__class__
2541
tree = self.bzrdir.open_workingtree(recommend_upgrade=False)
2542
except (errors.NoWorkingTree, errors.NotLocalUrl):
2545
# TODO: conversions of Branch and Tree should be done by
2546
# InterXFormat lookups
2547
if (isinstance(tree, workingtree.WorkingTree3) and
2548
not isinstance(tree, workingtree_4.WorkingTree4) and
2549
isinstance(self.target_format.workingtree_format,
2550
workingtree_4.WorkingTreeFormat4)):
2551
workingtree_4.Converter3to4().convert(tree)
2555
# This is not in remote.py because it's small, and needs to be registered.
2556
# Putting it in remote.py creates a circular import problem.
2557
# we can make it a lazy object if the control formats is turned into something
2559
class RemoteBzrDirFormat(BzrDirMetaFormat1):
2560
"""Format representing bzrdirs accessed via a smart server"""
2562
def get_format_description(self):
2563
return 'bzr remote bzrdir'
2566
def probe_transport(klass, transport):
2567
"""Return a RemoteBzrDirFormat object if it looks possible."""
2569
medium = transport.get_smart_medium()
2570
except (NotImplementedError, AttributeError,
2571
errors.TransportNotPossible, errors.NoSmartMedium,
2572
errors.SmartProtocolError):
2573
# no smart server, so not a branch for this format type.
2574
raise errors.NotBranchError(path=transport.base)
2576
# Decline to open it if the server doesn't support our required
2577
# version (3) so that the VFS-based transport will do it.
2578
if medium.should_probe():
2580
server_version = medium.protocol_version()
2581
except errors.SmartProtocolError:
2582
# Apparently there's no usable smart server there, even though
2583
# the medium supports the smart protocol.
2584
raise errors.NotBranchError(path=transport.base)
2585
if server_version != '2':
2586
raise errors.NotBranchError(path=transport.base)
2589
def initialize_on_transport(self, transport):
2591
# hand off the request to the smart server
2592
client_medium = transport.get_smart_medium()
2593
except errors.NoSmartMedium:
2594
# TODO: lookup the local format from a server hint.
2595
local_dir_format = BzrDirMetaFormat1()
2596
return local_dir_format.initialize_on_transport(transport)
2597
client = _SmartClient(client_medium)
2598
path = client.remote_path_from_transport(transport)
2599
response = client.call('BzrDirFormat.initialize', path)
2600
if response[0] != 'ok':
2601
raise errors.SmartProtocolError('unexpected response code %s' % (response,))
2602
return remote.RemoteBzrDir(transport)
2604
def _open(self, transport):
2605
return remote.RemoteBzrDir(transport)
2607
def __eq__(self, other):
2608
if not isinstance(other, RemoteBzrDirFormat):
2610
return self.get_format_description() == other.get_format_description()
2613
BzrDirFormat.register_control_server_format(RemoteBzrDirFormat)
2616
class BzrDirFormatInfo(object):
2618
def __init__(self, native, deprecated, hidden, experimental):
2619
self.deprecated = deprecated
2620
self.native = native
2621
self.hidden = hidden
2622
self.experimental = experimental
2625
class BzrDirFormatRegistry(registry.Registry):
2626
"""Registry of user-selectable BzrDir subformats.
2628
Differs from BzrDirFormat._control_formats in that it provides sub-formats,
2629
e.g. BzrDirMeta1 with weave repository. Also, it's more user-oriented.
2633
"""Create a BzrDirFormatRegistry."""
2634
self._aliases = set()
2635
super(BzrDirFormatRegistry, self).__init__()
2638
"""Return a set of the format names which are aliases."""
2639
return frozenset(self._aliases)
2641
def register_metadir(self, key,
2642
repository_format, help, native=True, deprecated=False,
2648
"""Register a metadir subformat.
2650
These all use a BzrDirMetaFormat1 bzrdir, but can be parameterized
2651
by the Repository format.
2653
:param repository_format: The fully-qualified repository format class
2655
:param branch_format: Fully-qualified branch format class name as
2657
:param tree_format: Fully-qualified tree format class name as
2660
# This should be expanded to support setting WorkingTree and Branch
2661
# formats, once BzrDirMetaFormat1 supports that.
2662
def _load(full_name):
2663
mod_name, factory_name = full_name.rsplit('.', 1)
2665
mod = __import__(mod_name, globals(), locals(),
2667
except ImportError, e:
2668
raise ImportError('failed to load %s: %s' % (full_name, e))
2670
factory = getattr(mod, factory_name)
2671
except AttributeError:
2672
raise AttributeError('no factory %s in module %r'
2677
bd = BzrDirMetaFormat1()
2678
if branch_format is not None:
2679
bd.set_branch_format(_load(branch_format))
2680
if tree_format is not None:
2681
bd.workingtree_format = _load(tree_format)
2682
if repository_format is not None:
2683
bd.repository_format = _load(repository_format)
2685
self.register(key, helper, help, native, deprecated, hidden,
2686
experimental, alias)
2688
def register(self, key, factory, help, native=True, deprecated=False,
2689
hidden=False, experimental=False, alias=False):
2690
"""Register a BzrDirFormat factory.
2692
The factory must be a callable that takes one parameter: the key.
2693
It must produce an instance of the BzrDirFormat when called.
2695
This function mainly exists to prevent the info object from being
2698
registry.Registry.register(self, key, factory, help,
2699
BzrDirFormatInfo(native, deprecated, hidden, experimental))
2701
self._aliases.add(key)
2703
def register_lazy(self, key, module_name, member_name, help, native=True,
2704
deprecated=False, hidden=False, experimental=False, alias=False):
2705
registry.Registry.register_lazy(self, key, module_name, member_name,
2706
help, BzrDirFormatInfo(native, deprecated, hidden, experimental))
2708
self._aliases.add(key)
2710
def set_default(self, key):
2711
"""Set the 'default' key to be a clone of the supplied key.
2713
This method must be called once and only once.
2715
registry.Registry.register(self, 'default', self.get(key),
2716
self.get_help(key), info=self.get_info(key))
2717
self._aliases.add('default')
2719
def set_default_repository(self, key):
2720
"""Set the FormatRegistry default and Repository default.
2722
This is a transitional method while Repository.set_default_format
2725
if 'default' in self:
2726
self.remove('default')
2727
self.set_default(key)
2728
format = self.get('default')()
2730
def make_bzrdir(self, key):
2731
return self.get(key)()
2733
def help_topic(self, topic):
2734
output = textwrap.dedent("""\
2735
These formats can be used for creating branches, working trees, and
2739
default_realkey = None
2740
default_help = self.get_help('default')
2742
for key in self.keys():
2743
if key == 'default':
2745
help = self.get_help(key)
2746
if help == default_help:
2747
default_realkey = key
2749
help_pairs.append((key, help))
2751
def wrapped(key, help, info):
2753
help = '(native) ' + help
2754
return ':%s:\n%s\n\n' % (key,
2755
textwrap.fill(help, initial_indent=' ',
2756
subsequent_indent=' '))
2757
if default_realkey is not None:
2758
output += wrapped(default_realkey, '(default) %s' % default_help,
2759
self.get_info('default'))
2760
deprecated_pairs = []
2761
experimental_pairs = []
2762
for key, help in help_pairs:
2763
info = self.get_info(key)
2766
elif info.deprecated:
2767
deprecated_pairs.append((key, help))
2768
elif info.experimental:
2769
experimental_pairs.append((key, help))
2771
output += wrapped(key, help, info)
2772
if len(experimental_pairs) > 0:
2773
output += "Experimental formats are shown below.\n\n"
2774
for key, help in experimental_pairs:
2775
info = self.get_info(key)
2776
output += wrapped(key, help, info)
2777
if len(deprecated_pairs) > 0:
2778
output += "Deprecated formats are shown below.\n\n"
2779
for key, help in deprecated_pairs:
2780
info = self.get_info(key)
2781
output += wrapped(key, help, info)
2786
class RepositoryAcquisitionPolicy(object):
2787
"""Abstract base class for repository acquisition policies.
2789
A repository acquisition policy decides how a BzrDir acquires a repository
2790
for a branch that is being created. The most basic policy decision is
2791
whether to create a new repository or use an existing one.
2793
def __init__(self, stack_on, stack_on_pwd, require_stacking):
2796
:param stack_on: A location to stack on
2797
:param stack_on_pwd: If stack_on is relative, the location it is
2799
:param require_stacking: If True, it is a failure to not stack.
2801
self._stack_on = stack_on
2802
self._stack_on_pwd = stack_on_pwd
2803
self._require_stacking = require_stacking
2805
def configure_branch(self, branch):
2806
"""Apply any configuration data from this policy to the branch.
2808
Default implementation sets repository stacking.
2810
if self._stack_on is None:
2812
if self._stack_on_pwd is None:
2813
stack_on = self._stack_on
2816
stack_on = urlutils.rebase_url(self._stack_on,
2818
branch.bzrdir.root_transport.base)
2819
except errors.InvalidRebaseURLs:
2820
stack_on = self._get_full_stack_on()
2822
branch.set_stacked_on_url(stack_on)
2823
except errors.UnstackableBranchFormat:
2824
if self._require_stacking:
2827
def _get_full_stack_on(self):
2828
"""Get a fully-qualified URL for the stack_on location."""
2829
if self._stack_on is None:
2831
if self._stack_on_pwd is None:
2832
return self._stack_on
2834
return urlutils.join(self._stack_on_pwd, self._stack_on)
2836
def _add_fallback(self, repository):
2837
"""Add a fallback to the supplied repository, if stacking is set."""
2838
stack_on = self._get_full_stack_on()
2839
if stack_on is None:
2841
stacked_dir = BzrDir.open(stack_on)
2843
stacked_repo = stacked_dir.open_branch().repository
2844
except errors.NotBranchError:
2845
stacked_repo = stacked_dir.open_repository()
2847
repository.add_fallback_repository(stacked_repo)
2848
except errors.UnstackableRepositoryFormat:
2849
if self._require_stacking:
2852
def acquire_repository(self, make_working_trees=None, shared=False):
2853
"""Acquire a repository for this bzrdir.
2855
Implementations may create a new repository or use a pre-exising
2857
:param make_working_trees: If creating a repository, set
2858
make_working_trees to this value (if non-None)
2859
:param shared: If creating a repository, make it shared if True
2860
:return: A repository
2862
raise NotImplemented(RepositoryAcquisitionPolicy.acquire_repository)
2865
class CreateRepository(RepositoryAcquisitionPolicy):
2866
"""A policy of creating a new repository"""
2868
def __init__(self, bzrdir, stack_on=None, stack_on_pwd=None,
2869
require_stacking=False):
2872
:param bzrdir: The bzrdir to create the repository on.
2873
:param stack_on: A location to stack on
2874
:param stack_on_pwd: If stack_on is relative, the location it is
2877
RepositoryAcquisitionPolicy.__init__(self, stack_on, stack_on_pwd,
2879
self._bzrdir = bzrdir
2881
def acquire_repository(self, make_working_trees=None, shared=False):
2882
"""Implementation of RepositoryAcquisitionPolicy.acquire_repository
2884
Creates the desired repository in the bzrdir we already have.
2886
if self._stack_on or self._require_stacking:
2887
# we may be coming from a format that doesn't support stacking,
2888
# but we require it in the destination, so force creation of a new
2891
# TODO: perhaps this should be treated as a distinct repository
2892
# acquisition policy?
2893
repository_format = self._bzrdir._format.repository_format
2894
if not repository_format.supports_external_lookups:
2895
# should possibly be controlled by the registry rather than
2897
from bzrlib.repofmt import pack_repo
2898
if repository_format.rich_root_data:
2899
repository_format = \
2900
pack_repo.RepositoryFormatKnitPack5RichRoot()
2902
repository_format = pack_repo.RepositoryFormatKnitPack5()
2903
note("using %r for stacking" % (repository_format,))
2904
repository = repository_format.initialize(self._bzrdir,
2908
repository = self._bzrdir.create_repository(shared=shared)
2909
self._add_fallback(repository)
2910
if make_working_trees is not None:
2911
repository.set_make_working_trees(make_working_trees)
2915
class UseExistingRepository(RepositoryAcquisitionPolicy):
2916
"""A policy of reusing an existing repository"""
2918
def __init__(self, repository, stack_on=None, stack_on_pwd=None,
2919
require_stacking=False):
2922
:param repository: The repository to use.
2923
:param stack_on: A location to stack on
2924
:param stack_on_pwd: If stack_on is relative, the location it is
2927
RepositoryAcquisitionPolicy.__init__(self, stack_on, stack_on_pwd,
2929
self._repository = repository
2931
def acquire_repository(self, make_working_trees=None, shared=False):
2932
"""Implementation of RepositoryAcquisitionPolicy.acquire_repository
2934
Returns an existing repository to use
2936
self._add_fallback(self._repository)
2937
return self._repository
2940
format_registry = BzrDirFormatRegistry()
2941
format_registry.register('weave', BzrDirFormat6,
2942
'Pre-0.8 format. Slower than knit and does not'
2943
' support checkouts or shared repositories.',
2945
format_registry.register_metadir('knit',
2946
'bzrlib.repofmt.knitrepo.RepositoryFormatKnit1',
2947
'Format using knits. Recommended for interoperation with bzr <= 0.14.',
2948
branch_format='bzrlib.branch.BzrBranchFormat5',
2949
tree_format='bzrlib.workingtree.WorkingTreeFormat3')
2950
format_registry.register_metadir('metaweave',
2951
'bzrlib.repofmt.weaverepo.RepositoryFormat7',
2952
'Transitional format in 0.8. Slower than knit.',
2953
branch_format='bzrlib.branch.BzrBranchFormat5',
2954
tree_format='bzrlib.workingtree.WorkingTreeFormat3',
2956
format_registry.register_metadir('dirstate',
2957
'bzrlib.repofmt.knitrepo.RepositoryFormatKnit1',
2958
help='New in 0.15: Fast local operations. Compatible with bzr 0.8 and '
2959
'above when accessed over the network.',
2960
branch_format='bzrlib.branch.BzrBranchFormat5',
2961
# this uses bzrlib.workingtree.WorkingTreeFormat4 because importing
2962
# directly from workingtree_4 triggers a circular import.
2963
tree_format='bzrlib.workingtree.WorkingTreeFormat4',
2965
format_registry.register_metadir('dirstate-tags',
2966
'bzrlib.repofmt.knitrepo.RepositoryFormatKnit1',
2967
help='New in 0.15: Fast local operations and improved scaling for '
2968
'network operations. Additionally adds support for tags.'
2969
' Incompatible with bzr < 0.15.',
2970
branch_format='bzrlib.branch.BzrBranchFormat6',
2971
tree_format='bzrlib.workingtree.WorkingTreeFormat4',
2973
format_registry.register_metadir('rich-root',
2974
'bzrlib.repofmt.knitrepo.RepositoryFormatKnit4',
2975
help='New in 1.0. Better handling of tree roots. Incompatible with'
2977
branch_format='bzrlib.branch.BzrBranchFormat6',
2978
tree_format='bzrlib.workingtree.WorkingTreeFormat4',
2980
format_registry.register_metadir('dirstate-with-subtree',
2981
'bzrlib.repofmt.knitrepo.RepositoryFormatKnit3',
2982
help='New in 0.15: Fast local operations and improved scaling for '
2983
'network operations. Additionally adds support for versioning nested '
2984
'bzr branches. Incompatible with bzr < 0.15.',
2985
branch_format='bzrlib.branch.BzrBranchFormat6',
2986
tree_format='bzrlib.workingtree.WorkingTreeFormat4',
2990
format_registry.register_metadir('pack-0.92',
2991
'bzrlib.repofmt.pack_repo.RepositoryFormatKnitPack1',
2992
help='New in 0.92: Pack-based format with data compatible with '
2993
'dirstate-tags format repositories. Interoperates with '
2994
'bzr repositories before 0.92 but cannot be read by bzr < 0.92. '
2995
'Previously called knitpack-experimental. '
2996
'For more information, see '
2997
'http://doc.bazaar-vcs.org/latest/developers/packrepo.html.',
2998
branch_format='bzrlib.branch.BzrBranchFormat6',
2999
tree_format='bzrlib.workingtree.WorkingTreeFormat4',
3001
format_registry.register_metadir('pack-0.92-subtree',
3002
'bzrlib.repofmt.pack_repo.RepositoryFormatKnitPack3',
3003
help='New in 0.92: Pack-based format with data compatible with '
3004
'dirstate-with-subtree format repositories. Interoperates with '
3005
'bzr repositories before 0.92 but cannot be read by bzr < 0.92. '
3006
'Previously called knitpack-experimental. '
3007
'For more information, see '
3008
'http://doc.bazaar-vcs.org/latest/developers/packrepo.html.',
3009
branch_format='bzrlib.branch.BzrBranchFormat6',
3010
tree_format='bzrlib.workingtree.WorkingTreeFormat4',
3014
format_registry.register_metadir('rich-root-pack',
3015
'bzrlib.repofmt.pack_repo.RepositoryFormatKnitPack4',
3016
help='New in 1.0: Pack-based format with data compatible with '
3017
'rich-root format repositories. Incompatible with'
3019
branch_format='bzrlib.branch.BzrBranchFormat6',
3020
tree_format='bzrlib.workingtree.WorkingTreeFormat4',
3022
format_registry.register_metadir('1.6',
3023
'bzrlib.repofmt.pack_repo.RepositoryFormatKnitPack5',
3024
help='A branch and pack based repository that supports stacking. ',
3025
branch_format='bzrlib.branch.BzrBranchFormat7',
3026
tree_format='bzrlib.workingtree.WorkingTreeFormat4',
3028
format_registry.register_metadir('1.6.1-rich-root',
3029
'bzrlib.repofmt.pack_repo.RepositoryFormatKnitPack5RichRoot',
3030
help='A branch and pack based repository that supports stacking '
3031
'and rich root data (needed for bzr-svn). ',
3032
branch_format='bzrlib.branch.BzrBranchFormat7',
3033
tree_format='bzrlib.workingtree.WorkingTreeFormat4',
3035
# The following two formats should always just be aliases.
3036
format_registry.register_metadir('development',
3037
'bzrlib.repofmt.pack_repo.RepositoryFormatPackDevelopment1',
3038
help='Current development format. Can convert data to and from pack-0.92 '
3039
'(and anything compatible with pack-0.92) format repositories. '
3040
'Repositories and branches in this format can only be read by bzr.dev. '
3042
'http://doc.bazaar-vcs.org/latest/developers/development-repo.html '
3044
branch_format='bzrlib.branch.BzrBranchFormat7',
3045
tree_format='bzrlib.workingtree.WorkingTreeFormat4',
3049
format_registry.register_metadir('development-subtree',
3050
'bzrlib.repofmt.pack_repo.RepositoryFormatPackDevelopment1Subtree',
3051
help='Current development format, subtree variant. Can convert data to and '
3052
'from pack-0.92-subtree (and anything compatible with '
3053
'pack-0.92-subtree) format repositories. Repositories and branches in '
3054
'this format can only be read by bzr.dev. Please read '
3055
'http://doc.bazaar-vcs.org/latest/developers/development-repo.html '
3057
branch_format='bzrlib.branch.BzrBranchFormat7',
3058
tree_format='bzrlib.workingtree.WorkingTreeFormat4',
3062
# And the development formats which the will have aliased one of follow:
3063
format_registry.register_metadir('development0',
3064
'bzrlib.repofmt.pack_repo.RepositoryFormatPackDevelopment0',
3065
help='Trivial rename of pack-0.92 to provide a development format. '
3067
'http://doc.bazaar-vcs.org/latest/developers/development-repo.html '
3069
branch_format='bzrlib.branch.BzrBranchFormat6',
3070
tree_format='bzrlib.workingtree.WorkingTreeFormat4',
3074
format_registry.register_metadir('development0-subtree',
3075
'bzrlib.repofmt.pack_repo.RepositoryFormatPackDevelopment0Subtree',
3076
help='Trivial rename of pack-0.92-subtree to provide a development format. '
3078
'http://doc.bazaar-vcs.org/latest/developers/development-repo.html '
3080
branch_format='bzrlib.branch.BzrBranchFormat6',
3081
tree_format='bzrlib.workingtree.WorkingTreeFormat4',
3085
format_registry.register_metadir('development1',
3086
'bzrlib.repofmt.pack_repo.RepositoryFormatPackDevelopment1',
3087
help='A branch and pack based repository that supports stacking. '
3089
'http://doc.bazaar-vcs.org/latest/developers/development-repo.html '
3091
branch_format='bzrlib.branch.BzrBranchFormat7',
3092
tree_format='bzrlib.workingtree.WorkingTreeFormat4',
3096
format_registry.register_metadir('development1-subtree',
3097
'bzrlib.repofmt.pack_repo.RepositoryFormatPackDevelopment1Subtree',
3098
help='A branch and pack based repository that supports stacking. '
3100
'http://doc.bazaar-vcs.org/latest/developers/development-repo.html '
3102
branch_format='bzrlib.branch.BzrBranchFormat7',
3103
tree_format='bzrlib.workingtree.WorkingTreeFormat4',
3107
# The current format that is made on 'bzr init'.
3108
format_registry.set_default('pack-0.92')
added
removed
bzrlib/bzrdir.py
