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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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require_stacking = (stacked_on is not None)
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metadir = self.cloning_metadir(require_stacking)
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result = 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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stacked_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, stacked_on, self.root_transport.base,
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require_stacking=require_stacking)
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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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config = found_bzrdir.get_config()
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if config is not None:
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stack_on = config.get_default_stack_on()
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if stack_on is not None:
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stack_on_pwd = found_bzrdir.root_transport.base
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note('Using default stacking branch %s at %s', stack_on,
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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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if (st.st_mode & 07777 == 00000):
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# FTP allows stat but does not return dir/file modes
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self._dir_mode = None
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self._file_mode = None
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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):
767
"""Open an existing bzrdir, rooted at 'base' (url).
769
:param _unsupported: a private parameter to the BzrDir class.
771
t = get_transport(base, possible_transports=possible_transports)
772
return BzrDir.open_from_transport(t, _unsupported=_unsupported)
775
def open_from_transport(transport, _unsupported=False,
776
_server_formats=True):
777
"""Open a bzrdir within a particular directory.
779
:param transport: Transport containing the bzrdir.
780
:param _unsupported: private.
782
base = transport.base
784
def find_format(transport):
785
return transport, BzrDirFormat.find_format(
786
transport, _server_formats=_server_formats)
788
def redirected(transport, e, redirection_notice):
789
qualified_source = e.get_source_url()
790
relpath = transport.relpath(qualified_source)
791
if not e.target.endswith(relpath):
792
# Not redirected to a branch-format, not a branch
793
raise errors.NotBranchError(path=e.target)
794
target = e.target[:-len(relpath)]
795
note('%s is%s redirected to %s',
796
transport.base, e.permanently, target)
797
# Let's try with a new transport
798
# FIXME: If 'transport' has a qualifier, this should
799
# be applied again to the new transport *iff* the
800
# schemes used are the same. Uncomment this code
801
# once the function (and tests) exist.
803
#target = urlutils.copy_url_qualifiers(original, target)
804
return get_transport(target)
807
transport, format = do_catching_redirections(find_format,
810
except errors.TooManyRedirections:
811
raise errors.NotBranchError(base)
813
BzrDir._check_supported(format, _unsupported)
814
return format.open(transport, _found=True)
816
def open_branch(self, unsupported=False):
817
"""Open the branch object at this BzrDir if one is present.
819
If unsupported is True, then no longer supported branch formats can
822
TODO: static convenience version of this?
824
raise NotImplementedError(self.open_branch)
827
def open_containing(url, possible_transports=None):
828
"""Open an existing branch which contains url.
830
:param url: url to search from.
831
See open_containing_from_transport for more detail.
833
transport = get_transport(url, possible_transports)
834
return BzrDir.open_containing_from_transport(transport)
837
def open_containing_from_transport(a_transport):
838
"""Open an existing branch which contains a_transport.base.
840
This probes for a branch at a_transport, and searches upwards from there.
842
Basically we keep looking up until we find the control directory or
843
run into the root. If there isn't one, raises NotBranchError.
844
If there is one and it is either an unrecognised format or an unsupported
845
format, UnknownFormatError or UnsupportedFormatError are raised.
846
If there is one, it is returned, along with the unused portion of url.
848
:return: The BzrDir that contains the path, and a Unicode path
849
for the rest of the URL.
851
# this gets the normalised url back. I.e. '.' -> the full path.
852
url = a_transport.base
855
result = BzrDir.open_from_transport(a_transport)
856
return result, urlutils.unescape(a_transport.relpath(url))
857
except errors.NotBranchError, e:
860
new_t = a_transport.clone('..')
861
except errors.InvalidURLJoin:
862
# reached the root, whatever that may be
863
raise errors.NotBranchError(path=url)
864
if new_t.base == a_transport.base:
865
# reached the root, whatever that may be
866
raise errors.NotBranchError(path=url)
869
def _get_tree_branch(self):
870
"""Return the branch and tree, if any, for this bzrdir.
872
Return None for tree if not present or inaccessible.
873
Raise NotBranchError if no branch is present.
874
:return: (tree, branch)
877
tree = self.open_workingtree()
878
except (errors.NoWorkingTree, errors.NotLocalUrl):
880
branch = self.open_branch()
886
def open_tree_or_branch(klass, location):
887
"""Return the branch and working tree at a location.
889
If there is no tree at the location, tree will be None.
890
If there is no branch at the location, an exception will be
892
:return: (tree, branch)
894
bzrdir = klass.open(location)
895
return bzrdir._get_tree_branch()
898
def open_containing_tree_or_branch(klass, location):
899
"""Return the branch and working tree contained by a location.
901
Returns (tree, branch, relpath).
902
If there is no tree at containing the location, tree will be None.
903
If there is no branch containing the location, an exception will be
905
relpath is the portion of the path that is contained by the branch.
907
bzrdir, relpath = klass.open_containing(location)
908
tree, branch = bzrdir._get_tree_branch()
909
return tree, branch, relpath
912
def open_containing_tree_branch_or_repository(klass, location):
913
"""Return the working tree, branch and repo contained by a location.
915
Returns (tree, branch, repository, relpath).
916
If there is no tree containing the location, tree will be None.
917
If there is no branch containing the location, branch will be None.
918
If there is no repository containing the location, repository will be
920
relpath is the portion of the path that is contained by the innermost
923
If no tree, branch or repository is found, a NotBranchError is raised.
925
bzrdir, relpath = klass.open_containing(location)
927
tree, branch = bzrdir._get_tree_branch()
928
except errors.NotBranchError:
930
repo = bzrdir.find_repository()
931
return None, None, repo, relpath
932
except (errors.NoRepositoryPresent):
933
raise errors.NotBranchError(location)
934
return tree, branch, branch.repository, relpath
936
def open_repository(self, _unsupported=False):
937
"""Open the repository object at this BzrDir if one is present.
939
This will not follow the Branch object pointer - it's strictly a direct
940
open facility. Most client code should use open_branch().repository to
943
:param _unsupported: a private parameter, not part of the api.
944
TODO: static convenience version of this?
946
raise NotImplementedError(self.open_repository)
948
def open_workingtree(self, _unsupported=False,
949
recommend_upgrade=True, from_branch=None):
950
"""Open the workingtree object at this BzrDir if one is present.
952
:param recommend_upgrade: Optional keyword parameter, when True (the
953
default), emit through the ui module a recommendation that the user
954
upgrade the working tree when the workingtree being opened is old
955
(but still fully supported).
956
:param from_branch: override bzrdir branch (for lightweight checkouts)
958
raise NotImplementedError(self.open_workingtree)
960
def has_branch(self):
961
"""Tell if this bzrdir contains a branch.
963
Note: if you're going to open the branch, you should just go ahead
964
and try, and not ask permission first. (This method just opens the
965
branch and discards it, and that's somewhat expensive.)
970
except errors.NotBranchError:
973
def has_workingtree(self):
974
"""Tell if this bzrdir contains a working tree.
976
This will still raise an exception if the bzrdir has a workingtree that
977
is remote & inaccessible.
979
Note: if you're going to open the working tree, you should just go ahead
980
and try, and not ask permission first. (This method just opens the
981
workingtree and discards it, and that's somewhat expensive.)
984
self.open_workingtree(recommend_upgrade=False)
986
except errors.NoWorkingTree:
989
def _cloning_metadir(self):
990
"""Produce a metadir suitable for cloning with.
992
:returns: (destination_bzrdir_format, source_repository)
994
result_format = self._format.__class__()
997
branch = self.open_branch()
998
source_repository = branch.repository
999
result_format._branch_format = branch._format
1000
except errors.NotBranchError:
1001
source_branch = None
1002
source_repository = self.open_repository()
1003
except errors.NoRepositoryPresent:
1004
source_repository = None
1006
# XXX TODO: This isinstance is here because we have not implemented
1007
# the fix recommended in bug # 103195 - to delegate this choice the
1008
# repository itself.
1009
repo_format = source_repository._format
1010
if isinstance(repo_format, remote.RemoteRepositoryFormat):
1011
source_repository._ensure_real()
1012
repo_format = source_repository._real_repository._format
1013
result_format.repository_format = repo_format
1015
# TODO: Couldn't we just probe for the format in these cases,
1016
# rather than opening the whole tree? It would be a little
1017
# faster. mbp 20070401
1018
tree = self.open_workingtree(recommend_upgrade=False)
1019
except (errors.NoWorkingTree, errors.NotLocalUrl):
1020
result_format.workingtree_format = None
1022
result_format.workingtree_format = tree._format.__class__()
1023
return result_format, source_repository
1025
def cloning_metadir(self, require_stacking=False):
1026
"""Produce a metadir suitable for cloning or sprouting with.
1028
These operations may produce workingtrees (yes, even though they're
1029
"cloning" something that doesn't have a tree), so a viable workingtree
1030
format must be selected.
1032
:require_stacking: If True, non-stackable formats will be upgraded
1033
to similar stackable formats.
1034
:returns: a BzrDirFormat with all component formats either set
1035
appropriately or set to None if that component should not be
1038
format, repository = self._cloning_metadir()
1039
if format._workingtree_format is None:
1040
if repository is None:
1042
tree_format = repository._format._matchingbzrdir.workingtree_format
1043
format.workingtree_format = tree_format.__class__()
1044
if (require_stacking and not
1045
format.get_branch_format().supports_stacking()):
1046
# We need to make a stacked branch, but the default format for the
1047
# target doesn't support stacking. So force a branch that *can*
1049
from bzrlib.branch import BzrBranchFormat7
1050
format._branch_format = BzrBranchFormat7()
1051
mutter("using %r for stacking" % (format._branch_format,))
1052
from bzrlib.repofmt import pack_repo
1053
if format.repository_format.rich_root_data:
1054
bzrdir_format_name = '1.6.1-rich-root'
1055
repo_format = pack_repo.RepositoryFormatKnitPack5RichRoot()
1057
bzrdir_format_name = '1.6'
1058
repo_format = pack_repo.RepositoryFormatKnitPack5()
1059
note('Source format does not support stacking, using format:'
1061
bzrdir_format_name, repo_format.get_format_description())
1062
format.repository_format = repo_format
1065
def checkout_metadir(self):
1066
return self.cloning_metadir()
1068
def sprout(self, url, revision_id=None, force_new_repo=False,
1069
recurse='down', possible_transports=None,
1070
accelerator_tree=None, hardlink=False, stacked=False):
1071
"""Create a copy of this bzrdir prepared for use as a new line of
1074
If url's last component does not exist, it will be created.
1076
Attributes related to the identity of the source branch like
1077
branch nickname will be cleaned, a working tree is created
1078
whether one existed before or not; and a local branch is always
1081
if revision_id is not None, then the clone operation may tune
1082
itself to download less data.
1083
:param accelerator_tree: A tree which can be used for retrieving file
1084
contents more quickly than the revision tree, i.e. a workingtree.
1085
The revision tree will be used for cases where accelerator_tree's
1086
content is different.
1087
:param hardlink: If true, hard-link files from accelerator_tree,
1089
:param stacked: If true, create a stacked branch referring to the
1090
location of this control directory.
1092
target_transport = get_transport(url, possible_transports)
1093
target_transport.ensure_base()
1094
cloning_format = self.cloning_metadir(stacked)
1095
# Create/update the result branch
1096
result = cloning_format.initialize_on_transport(target_transport)
1098
source_branch = self.open_branch()
1099
source_repository = source_branch.repository
1101
stacked_branch_url = self.root_transport.base
1103
# if a stacked branch wasn't requested, we don't create one
1104
# even if the origin was stacked
1105
stacked_branch_url = None
1106
except errors.NotBranchError:
1107
source_branch = None
1109
source_repository = self.open_repository()
1110
except errors.NoRepositoryPresent:
1111
source_repository = None
1112
stacked_branch_url = None
1113
repository_policy = result.determine_repository_policy(
1114
force_new_repo, stacked_branch_url, require_stacking=stacked)
1115
result_repo = repository_policy.acquire_repository()
1116
if source_repository is not None:
1117
# Fetch while stacked to prevent unstacked fetch from
1119
result_repo.fetch(source_repository, revision_id=revision_id)
1121
if source_branch is None:
1122
# this is for sprouting a bzrdir without a branch; is that
1124
# Not especially, but it's part of the contract.
1125
result_branch = result.create_branch()
1127
# Force NULL revision to avoid using repository before stacking
1129
result_branch = source_branch.sprout(
1130
result, revision_id=_mod_revision.NULL_REVISION)
1131
parent_location = result_branch.get_parent()
1132
mutter("created new branch %r" % (result_branch,))
1133
repository_policy.configure_branch(result_branch)
1134
if source_branch is not None:
1135
source_branch.copy_content_into(result_branch, revision_id)
1136
# Override copy_content_into
1137
result_branch.set_parent(parent_location)
1139
# Create/update the result working tree
1140
if isinstance(target_transport, LocalTransport) and (
1141
result_repo is None or result_repo.make_working_trees()):
1142
wt = result.create_workingtree(accelerator_tree=accelerator_tree,
1146
if wt.path2id('') is None:
1148
wt.set_root_id(self.open_workingtree.get_root_id())
1149
except errors.NoWorkingTree:
1155
if recurse == 'down':
1157
basis = wt.basis_tree()
1159
subtrees = basis.iter_references()
1160
elif source_branch is not None:
1161
basis = source_branch.basis_tree()
1163
subtrees = basis.iter_references()
1168
for path, file_id in subtrees:
1169
target = urlutils.join(url, urlutils.escape(path))
1170
sublocation = source_branch.reference_parent(file_id, path)
1171
sublocation.bzrdir.sprout(target,
1172
basis.get_reference_revision(file_id, path),
1173
force_new_repo=force_new_repo, recurse=recurse,
1176
if basis is not None:
1181
class BzrDirPreSplitOut(BzrDir):
1182
"""A common class for the all-in-one formats."""
1184
def __init__(self, _transport, _format):
1185
"""See BzrDir.__init__."""
1186
super(BzrDirPreSplitOut, self).__init__(_transport, _format)
1187
self._control_files = lockable_files.LockableFiles(
1188
self.get_branch_transport(None),
1189
self._format._lock_file_name,
1190
self._format._lock_class)
1192
def break_lock(self):
1193
"""Pre-splitout bzrdirs do not suffer from stale locks."""
1194
raise NotImplementedError(self.break_lock)
1196
def cloning_metadir(self, require_stacking=False):
1197
"""Produce a metadir suitable for cloning with."""
1198
if require_stacking:
1199
return format_registry.make_bzrdir('1.6')
1200
return self._format.__class__()
1202
def clone(self, url, revision_id=None, force_new_repo=False,
1203
preserve_stacking=False):
1204
"""See BzrDir.clone().
1206
force_new_repo has no effect, since this family of formats always
1207
require a new repository.
1208
preserve_stacking has no effect, since no source branch using this
1209
family of formats can be stacked, so there is no stacking to preserve.
1211
self._make_tail(url)
1212
result = self._format._initialize_for_clone(url)
1213
self.open_repository().clone(result, revision_id=revision_id)
1214
from_branch = self.open_branch()
1215
from_branch.clone(result, revision_id=revision_id)
1217
tree = self.open_workingtree()
1218
except errors.NotLocalUrl:
1219
# make a new one, this format always has to have one.
1220
result._init_workingtree()
1225
def create_branch(self):
1226
"""See BzrDir.create_branch."""
1227
return self._format.get_branch_format().initialize(self)
1229
def destroy_branch(self):
1230
"""See BzrDir.destroy_branch."""
1231
raise errors.UnsupportedOperation(self.destroy_branch, self)
1233
def create_repository(self, shared=False):
1234
"""See BzrDir.create_repository."""
1236
raise errors.IncompatibleFormat('shared repository', self._format)
1237
return self.open_repository()
1239
def destroy_repository(self):
1240
"""See BzrDir.destroy_repository."""
1241
raise errors.UnsupportedOperation(self.destroy_repository, self)
1243
def create_workingtree(self, revision_id=None, from_branch=None,
1244
accelerator_tree=None, hardlink=False):
1245
"""See BzrDir.create_workingtree."""
1246
# The workingtree is sometimes created when the bzrdir is created,
1247
# but not when cloning.
1249
# this looks buggy but is not -really-
1250
# because this format creates the workingtree when the bzrdir is
1252
# clone and sprout will have set the revision_id
1253
# and that will have set it for us, its only
1254
# specific uses of create_workingtree in isolation
1255
# that can do wonky stuff here, and that only
1256
# happens for creating checkouts, which cannot be
1257
# done on this format anyway. So - acceptable wart.
1259
result = self.open_workingtree(recommend_upgrade=False)
1260
except errors.NoSuchFile:
1261
result = self._init_workingtree()
1262
if revision_id is not None:
1263
if revision_id == _mod_revision.NULL_REVISION:
1264
result.set_parent_ids([])
1266
result.set_parent_ids([revision_id])
1269
def _init_workingtree(self):
1270
from bzrlib.workingtree import WorkingTreeFormat2
1272
return WorkingTreeFormat2().initialize(self)
1273
except errors.NotLocalUrl:
1274
# Even though we can't access the working tree, we need to
1275
# create its control files.
1276
return WorkingTreeFormat2()._stub_initialize_on_transport(
1277
self.transport, self._control_files._file_mode)
1279
def destroy_workingtree(self):
1280
"""See BzrDir.destroy_workingtree."""
1281
raise errors.UnsupportedOperation(self.destroy_workingtree, self)
1283
def destroy_workingtree_metadata(self):
1284
"""See BzrDir.destroy_workingtree_metadata."""
1285
raise errors.UnsupportedOperation(self.destroy_workingtree_metadata,
1288
def get_branch_transport(self, branch_format):
1289
"""See BzrDir.get_branch_transport()."""
1290
if branch_format is None:
1291
return self.transport
1293
branch_format.get_format_string()
1294
except NotImplementedError:
1295
return self.transport
1296
raise errors.IncompatibleFormat(branch_format, self._format)
1298
def get_repository_transport(self, repository_format):
1299
"""See BzrDir.get_repository_transport()."""
1300
if repository_format is None:
1301
return self.transport
1303
repository_format.get_format_string()
1304
except NotImplementedError:
1305
return self.transport
1306
raise errors.IncompatibleFormat(repository_format, self._format)
1308
def get_workingtree_transport(self, workingtree_format):
1309
"""See BzrDir.get_workingtree_transport()."""
1310
if workingtree_format is None:
1311
return self.transport
1313
workingtree_format.get_format_string()
1314
except NotImplementedError:
1315
return self.transport
1316
raise errors.IncompatibleFormat(workingtree_format, self._format)
1318
def needs_format_conversion(self, format=None):
1319
"""See BzrDir.needs_format_conversion()."""
1320
# if the format is not the same as the system default,
1321
# an upgrade is needed.
1323
format = BzrDirFormat.get_default_format()
1324
return not isinstance(self._format, format.__class__)
1326
def open_branch(self, unsupported=False):
1327
"""See BzrDir.open_branch."""
1328
from bzrlib.branch import BzrBranchFormat4
1329
format = BzrBranchFormat4()
1330
self._check_supported(format, unsupported)
1331
return format.open(self, _found=True)
1333
def sprout(self, url, revision_id=None, force_new_repo=False,
1334
possible_transports=None, accelerator_tree=None,
1335
hardlink=False, stacked=False):
1336
"""See BzrDir.sprout()."""
1338
raise errors.UnstackableBranchFormat(
1339
self._format, self.root_transport.base)
1340
from bzrlib.workingtree import WorkingTreeFormat2
1341
self._make_tail(url)
1342
result = self._format._initialize_for_clone(url)
1344
self.open_repository().clone(result, revision_id=revision_id)
1345
except errors.NoRepositoryPresent:
1348
self.open_branch().sprout(result, revision_id=revision_id)
1349
except errors.NotBranchError:
1351
# we always want a working tree
1352
WorkingTreeFormat2().initialize(result,
1353
accelerator_tree=accelerator_tree,
1358
class BzrDir4(BzrDirPreSplitOut):
1359
"""A .bzr version 4 control object.
1361
This is a deprecated format and may be removed after sept 2006.
1364
def create_repository(self, shared=False):
1365
"""See BzrDir.create_repository."""
1366
return self._format.repository_format.initialize(self, shared)
1368
def needs_format_conversion(self, format=None):
1369
"""Format 4 dirs are always in need of conversion."""
1372
def open_repository(self):
1373
"""See BzrDir.open_repository."""
1374
from bzrlib.repofmt.weaverepo import RepositoryFormat4
1375
return RepositoryFormat4().open(self, _found=True)
1378
class BzrDir5(BzrDirPreSplitOut):
1379
"""A .bzr version 5 control object.
1381
This is a deprecated format and may be removed after sept 2006.
1384
def open_repository(self):
1385
"""See BzrDir.open_repository."""
1386
from bzrlib.repofmt.weaverepo import RepositoryFormat5
1387
return RepositoryFormat5().open(self, _found=True)
1389
def open_workingtree(self, _unsupported=False,
1390
recommend_upgrade=True):
1391
"""See BzrDir.create_workingtree."""
1392
from bzrlib.workingtree import WorkingTreeFormat2
1393
wt_format = WorkingTreeFormat2()
1394
# we don't warn here about upgrades; that ought to be handled for the
1396
return wt_format.open(self, _found=True)
1399
class BzrDir6(BzrDirPreSplitOut):
1400
"""A .bzr version 6 control object.
1402
This is a deprecated format and may be removed after sept 2006.
1405
def open_repository(self):
1406
"""See BzrDir.open_repository."""
1407
from bzrlib.repofmt.weaverepo import RepositoryFormat6
1408
return RepositoryFormat6().open(self, _found=True)
1410
def open_workingtree(self, _unsupported=False,
1411
recommend_upgrade=True):
1412
"""See BzrDir.create_workingtree."""
1413
# we don't warn here about upgrades; that ought to be handled for the
1415
from bzrlib.workingtree import WorkingTreeFormat2
1416
return WorkingTreeFormat2().open(self, _found=True)
1419
class BzrDirMeta1(BzrDir):
1420
"""A .bzr meta version 1 control object.
1422
This is the first control object where the
1423
individual aspects are really split out: there are separate repository,
1424
workingtree and branch subdirectories and any subset of the three can be
1425
present within a BzrDir.
1428
def can_convert_format(self):
1429
"""See BzrDir.can_convert_format()."""
1432
def create_branch(self):
1433
"""See BzrDir.create_branch."""
1434
return self._format.get_branch_format().initialize(self)
1436
def destroy_branch(self):
1437
"""See BzrDir.create_branch."""
1438
self.transport.delete_tree('branch')
1440
def create_repository(self, shared=False):
1441
"""See BzrDir.create_repository."""
1442
return self._format.repository_format.initialize(self, shared)
1444
def destroy_repository(self):
1445
"""See BzrDir.destroy_repository."""
1446
self.transport.delete_tree('repository')
1448
def create_workingtree(self, revision_id=None, from_branch=None,
1449
accelerator_tree=None, hardlink=False):
1450
"""See BzrDir.create_workingtree."""
1451
return self._format.workingtree_format.initialize(
1452
self, revision_id, from_branch=from_branch,
1453
accelerator_tree=accelerator_tree, hardlink=hardlink)
1455
def destroy_workingtree(self):
1456
"""See BzrDir.destroy_workingtree."""
1457
wt = self.open_workingtree(recommend_upgrade=False)
1458
repository = wt.branch.repository
1459
empty = repository.revision_tree(_mod_revision.NULL_REVISION)
1460
wt.revert(old_tree=empty)
1461
self.destroy_workingtree_metadata()
1463
def destroy_workingtree_metadata(self):
1464
self.transport.delete_tree('checkout')
1466
def find_branch_format(self):
1467
"""Find the branch 'format' for this bzrdir.
1469
This might be a synthetic object for e.g. RemoteBranch and SVN.
1471
from bzrlib.branch import BranchFormat
1472
return BranchFormat.find_format(self)
1474
def _get_mkdir_mode(self):
1475
"""Figure out the mode to use when creating a bzrdir subdir."""
1476
temp_control = lockable_files.LockableFiles(self.transport, '',
1477
lockable_files.TransportLock)
1478
return temp_control._dir_mode
1480
def get_branch_reference(self):
1481
"""See BzrDir.get_branch_reference()."""
1482
from bzrlib.branch import BranchFormat
1483
format = BranchFormat.find_format(self)
1484
return format.get_reference(self)
1486
def get_branch_transport(self, branch_format):
1487
"""See BzrDir.get_branch_transport()."""
1488
if branch_format is None:
1489
return self.transport.clone('branch')
1491
branch_format.get_format_string()
1492
except NotImplementedError:
1493
raise errors.IncompatibleFormat(branch_format, self._format)
1495
self.transport.mkdir('branch', mode=self._get_mkdir_mode())
1496
except errors.FileExists:
1498
return self.transport.clone('branch')
1500
def get_repository_transport(self, repository_format):
1501
"""See BzrDir.get_repository_transport()."""
1502
if repository_format is None:
1503
return self.transport.clone('repository')
1505
repository_format.get_format_string()
1506
except NotImplementedError:
1507
raise errors.IncompatibleFormat(repository_format, self._format)
1509
self.transport.mkdir('repository', mode=self._get_mkdir_mode())
1510
except errors.FileExists:
1512
return self.transport.clone('repository')
1514
def get_workingtree_transport(self, workingtree_format):
1515
"""See BzrDir.get_workingtree_transport()."""
1516
if workingtree_format is None:
1517
return self.transport.clone('checkout')
1519
workingtree_format.get_format_string()
1520
except NotImplementedError:
1521
raise errors.IncompatibleFormat(workingtree_format, self._format)
1523
self.transport.mkdir('checkout', mode=self._get_mkdir_mode())
1524
except errors.FileExists:
1526
return self.transport.clone('checkout')
1528
def needs_format_conversion(self, format=None):
1529
"""See BzrDir.needs_format_conversion()."""
1531
format = BzrDirFormat.get_default_format()
1532
if not isinstance(self._format, format.__class__):
1533
# it is not a meta dir format, conversion is needed.
1535
# we might want to push this down to the repository?
1537
if not isinstance(self.open_repository()._format,
1538
format.repository_format.__class__):
1539
# the repository needs an upgrade.
1541
except errors.NoRepositoryPresent:
1544
if not isinstance(self.open_branch()._format,
1545
format.get_branch_format().__class__):
1546
# the branch needs an upgrade.
1548
except errors.NotBranchError:
1551
my_wt = self.open_workingtree(recommend_upgrade=False)
1552
if not isinstance(my_wt._format,
1553
format.workingtree_format.__class__):
1554
# the workingtree needs an upgrade.
1556
except (errors.NoWorkingTree, errors.NotLocalUrl):
1560
def open_branch(self, unsupported=False):
1561
"""See BzrDir.open_branch."""
1562
format = self.find_branch_format()
1563
self._check_supported(format, unsupported)
1564
return format.open(self, _found=True)
1566
def open_repository(self, unsupported=False):
1567
"""See BzrDir.open_repository."""
1568
from bzrlib.repository import RepositoryFormat
1569
format = RepositoryFormat.find_format(self)
1570
self._check_supported(format, unsupported)
1571
return format.open(self, _found=True)
1573
def open_workingtree(self, unsupported=False,
1574
recommend_upgrade=True):
1575
"""See BzrDir.open_workingtree."""
1576
from bzrlib.workingtree import WorkingTreeFormat
1577
format = WorkingTreeFormat.find_format(self)
1578
self._check_supported(format, unsupported,
1580
basedir=self.root_transport.base)
1581
return format.open(self, _found=True)
1583
def _get_config(self):
1584
return config.BzrDirConfig(self.transport)
1587
class BzrDirFormat(object):
1588
"""An encapsulation of the initialization and open routines for a format.
1590
Formats provide three things:
1591
* An initialization routine,
1595
Formats are placed in a dict by their format string for reference
1596
during bzrdir opening. These should be subclasses of BzrDirFormat
1599
Once a format is deprecated, just deprecate the initialize and open
1600
methods on the format class. Do not deprecate the object, as the
1601
object will be created every system load.
1604
_default_format = None
1605
"""The default format used for new .bzr dirs."""
1608
"""The known formats."""
1610
_control_formats = []
1611
"""The registered control formats - .bzr, ....
1613
This is a list of BzrDirFormat objects.
1616
_control_server_formats = []
1617
"""The registered control server formats, e.g. RemoteBzrDirs.
1619
This is a list of BzrDirFormat objects.
1622
_lock_file_name = 'branch-lock'
1624
# _lock_class must be set in subclasses to the lock type, typ.
1625
# TransportLock or LockDir
1628
def find_format(klass, transport, _server_formats=True):
1629
"""Return the format present at transport."""
1631
formats = klass._control_server_formats + klass._control_formats
1633
formats = klass._control_formats
1634
for format in formats:
1636
return format.probe_transport(transport)
1637
except errors.NotBranchError:
1638
# this format does not find a control dir here.
1640
raise errors.NotBranchError(path=transport.base)
1643
def probe_transport(klass, transport):
1644
"""Return the .bzrdir style format present in a directory."""
1646
format_string = transport.get(".bzr/branch-format").read()
1647
except errors.NoSuchFile:
1648
raise errors.NotBranchError(path=transport.base)
1651
return klass._formats[format_string]
1653
raise errors.UnknownFormatError(format=format_string, kind='bzrdir')
1656
def get_default_format(klass):
1657
"""Return the current default format."""
1658
return klass._default_format
1660
def get_format_string(self):
1661
"""Return the ASCII format string that identifies this format."""
1662
raise NotImplementedError(self.get_format_string)
1664
def get_format_description(self):
1665
"""Return the short description for this format."""
1666
raise NotImplementedError(self.get_format_description)
1668
def get_converter(self, format=None):
1669
"""Return the converter to use to convert bzrdirs needing converts.
1671
This returns a bzrlib.bzrdir.Converter object.
1673
This should return the best upgrader to step this format towards the
1674
current default format. In the case of plugins we can/should provide
1675
some means for them to extend the range of returnable converters.
1677
:param format: Optional format to override the default format of the
1680
raise NotImplementedError(self.get_converter)
1682
def initialize(self, url, possible_transports=None):
1683
"""Create a bzr control dir at this url and return an opened copy.
1685
Subclasses should typically override initialize_on_transport
1686
instead of this method.
1688
return self.initialize_on_transport(get_transport(url,
1689
possible_transports))
1691
def initialize_on_transport(self, transport):
1692
"""Initialize a new bzrdir in the base directory of a Transport."""
1693
# Since we don't have a .bzr directory, inherit the
1694
# mode from the root directory
1695
temp_control = lockable_files.LockableFiles(transport,
1696
'', lockable_files.TransportLock)
1697
temp_control._transport.mkdir('.bzr',
1698
# FIXME: RBC 20060121 don't peek under
1700
mode=temp_control._dir_mode)
1701
if sys.platform == 'win32' and isinstance(transport, LocalTransport):
1702
win32utils.set_file_attr_hidden(transport._abspath('.bzr'))
1703
file_mode = temp_control._file_mode
1705
bzrdir_transport = transport.clone('.bzr')
1706
utf8_files = [('README',
1707
"This is a Bazaar control directory.\n"
1708
"Do not change any files in this directory.\n"
1709
"See http://bazaar-vcs.org/ for more information about Bazaar.\n"),
1710
('branch-format', self.get_format_string()),
1712
# NB: no need to escape relative paths that are url safe.
1713
control_files = lockable_files.LockableFiles(bzrdir_transport,
1714
self._lock_file_name, self._lock_class)
1715
control_files.create_lock()
1716
control_files.lock_write()
1718
for (filename, content) in utf8_files:
1719
bzrdir_transport.put_bytes(filename, content,
1722
control_files.unlock()
1723
return self.open(transport, _found=True)
1725
def is_supported(self):
1726
"""Is this format supported?
1728
Supported formats must be initializable and openable.
1729
Unsupported formats may not support initialization or committing or
1730
some other features depending on the reason for not being supported.
1734
def same_model(self, target_format):
1735
return (self.repository_format.rich_root_data ==
1736
target_format.rich_root_data)
1739
def known_formats(klass):
1740
"""Return all the known formats.
1742
Concrete formats should override _known_formats.
1744
# There is double indirection here to make sure that control
1745
# formats used by more than one dir format will only be probed
1746
# once. This can otherwise be quite expensive for remote connections.
1748
for format in klass._control_formats:
1749
result.update(format._known_formats())
1753
def _known_formats(klass):
1754
"""Return the known format instances for this control format."""
1755
return set(klass._formats.values())
1757
def open(self, transport, _found=False):
1758
"""Return an instance of this format for the dir transport points at.
1760
_found is a private parameter, do not use it.
1763
found_format = BzrDirFormat.find_format(transport)
1764
if not isinstance(found_format, self.__class__):
1765
raise AssertionError("%s was asked to open %s, but it seems to need "
1767
% (self, transport, found_format))
1768
return self._open(transport)
1770
def _open(self, transport):
1771
"""Template method helper for opening BzrDirectories.
1773
This performs the actual open and any additional logic or parameter
1776
raise NotImplementedError(self._open)
1779
def register_format(klass, format):
1780
klass._formats[format.get_format_string()] = format
1783
def register_control_format(klass, format):
1784
"""Register a format that does not use '.bzr' for its control dir.
1786
TODO: This should be pulled up into a 'ControlDirFormat' base class
1787
which BzrDirFormat can inherit from, and renamed to register_format
1788
there. It has been done without that for now for simplicity of
1791
klass._control_formats.append(format)
1794
def register_control_server_format(klass, format):
1795
"""Register a control format for client-server environments.
1797
These formats will be tried before ones registered with
1798
register_control_format. This gives implementations that decide to the
1799
chance to grab it before anything looks at the contents of the format
1802
klass._control_server_formats.append(format)
1805
def _set_default_format(klass, format):
1806
"""Set default format (for testing behavior of defaults only)"""
1807
klass._default_format = format
1811
return self.get_format_string().rstrip()
1814
def unregister_format(klass, format):
1815
del klass._formats[format.get_format_string()]
1818
def unregister_control_format(klass, format):
1819
klass._control_formats.remove(format)
1822
class BzrDirFormat4(BzrDirFormat):
1823
"""Bzr dir format 4.
1825
This format is a combined format for working tree, branch and repository.
1827
- Format 1 working trees [always]
1828
- Format 4 branches [always]
1829
- Format 4 repositories [always]
1831
This format is deprecated: it indexes texts using a text it which is
1832
removed in format 5; write support for this format has been removed.
1835
_lock_class = lockable_files.TransportLock
1837
def get_format_string(self):
1838
"""See BzrDirFormat.get_format_string()."""
1839
return "Bazaar-NG branch, format 0.0.4\n"
1841
def get_format_description(self):
1842
"""See BzrDirFormat.get_format_description()."""
1843
return "All-in-one format 4"
1845
def get_converter(self, format=None):
1846
"""See BzrDirFormat.get_converter()."""
1847
# there is one and only one upgrade path here.
1848
return ConvertBzrDir4To5()
1850
def initialize_on_transport(self, transport):
1851
"""Format 4 branches cannot be created."""
1852
raise errors.UninitializableFormat(self)
1854
def is_supported(self):
1855
"""Format 4 is not supported.
1857
It is not supported because the model changed from 4 to 5 and the
1858
conversion logic is expensive - so doing it on the fly was not
1863
def _open(self, transport):
1864
"""See BzrDirFormat._open."""
1865
return BzrDir4(transport, self)
1867
def __return_repository_format(self):
1868
"""Circular import protection."""
1869
from bzrlib.repofmt.weaverepo import RepositoryFormat4
1870
return RepositoryFormat4()
1871
repository_format = property(__return_repository_format)
1874
class BzrDirFormat5(BzrDirFormat):
1875
"""Bzr control format 5.
1877
This format is a combined format for working tree, branch and repository.
1879
- Format 2 working trees [always]
1880
- Format 4 branches [always]
1881
- Format 5 repositories [always]
1882
Unhashed stores in the repository.
1885
_lock_class = lockable_files.TransportLock
1887
def get_format_string(self):
1888
"""See BzrDirFormat.get_format_string()."""
1889
return "Bazaar-NG branch, format 5\n"
1891
def get_branch_format(self):
1892
from bzrlib import branch
1893
return branch.BzrBranchFormat4()
1895
def get_format_description(self):
1896
"""See BzrDirFormat.get_format_description()."""
1897
return "All-in-one format 5"
1899
def get_converter(self, format=None):
1900
"""See BzrDirFormat.get_converter()."""
1901
# there is one and only one upgrade path here.
1902
return ConvertBzrDir5To6()
1904
def _initialize_for_clone(self, url):
1905
return self.initialize_on_transport(get_transport(url), _cloning=True)
1907
def initialize_on_transport(self, transport, _cloning=False):
1908
"""Format 5 dirs always have working tree, branch and repository.
1910
Except when they are being cloned.
1912
from bzrlib.branch import BzrBranchFormat4
1913
from bzrlib.repofmt.weaverepo import RepositoryFormat5
1914
result = (super(BzrDirFormat5, self).initialize_on_transport(transport))
1915
RepositoryFormat5().initialize(result, _internal=True)
1917
branch = BzrBranchFormat4().initialize(result)
1918
result._init_workingtree()
1921
def _open(self, transport):
1922
"""See BzrDirFormat._open."""
1923
return BzrDir5(transport, self)
1925
def __return_repository_format(self):
1926
"""Circular import protection."""
1927
from bzrlib.repofmt.weaverepo import RepositoryFormat5
1928
return RepositoryFormat5()
1929
repository_format = property(__return_repository_format)
1932
class BzrDirFormat6(BzrDirFormat):
1933
"""Bzr control format 6.
1935
This format is a combined format for working tree, branch and repository.
1937
- Format 2 working trees [always]
1938
- Format 4 branches [always]
1939
- Format 6 repositories [always]
1942
_lock_class = lockable_files.TransportLock
1944
def get_format_string(self):
1945
"""See BzrDirFormat.get_format_string()."""
1946
return "Bazaar-NG branch, format 6\n"
1948
def get_format_description(self):
1949
"""See BzrDirFormat.get_format_description()."""
1950
return "All-in-one format 6"
1952
def get_branch_format(self):
1953
from bzrlib import branch
1954
return branch.BzrBranchFormat4()
1956
def get_converter(self, format=None):
1957
"""See BzrDirFormat.get_converter()."""
1958
# there is one and only one upgrade path here.
1959
return ConvertBzrDir6ToMeta()
1961
def _initialize_for_clone(self, url):
1962
return self.initialize_on_transport(get_transport(url), _cloning=True)
1964
def initialize_on_transport(self, transport, _cloning=False):
1965
"""Format 6 dirs always have working tree, branch and repository.
1967
Except when they are being cloned.
1969
from bzrlib.branch import BzrBranchFormat4
1970
from bzrlib.repofmt.weaverepo import RepositoryFormat6
1971
result = super(BzrDirFormat6, self).initialize_on_transport(transport)
1972
RepositoryFormat6().initialize(result, _internal=True)
1974
branch = BzrBranchFormat4().initialize(result)
1975
result._init_workingtree()
1978
def _open(self, transport):
1979
"""See BzrDirFormat._open."""
1980
return BzrDir6(transport, self)
1982
def __return_repository_format(self):
1983
"""Circular import protection."""
1984
from bzrlib.repofmt.weaverepo import RepositoryFormat6
1985
return RepositoryFormat6()
1986
repository_format = property(__return_repository_format)
1989
class BzrDirMetaFormat1(BzrDirFormat):
1990
"""Bzr meta control format 1
1992
This is the first format with split out working tree, branch and repository
1995
- Format 3 working trees [optional]
1996
- Format 5 branches [optional]
1997
- Format 7 repositories [optional]
2000
_lock_class = lockdir.LockDir
2003
self._workingtree_format = None
2004
self._branch_format = None
2006
def __eq__(self, other):
2007
if other.__class__ is not self.__class__:
2009
if other.repository_format != self.repository_format:
2011
if other.workingtree_format != self.workingtree_format:
2015
def __ne__(self, other):
2016
return not self == other
2018
def get_branch_format(self):
2019
if self._branch_format is None:
2020
from bzrlib.branch import BranchFormat
2021
self._branch_format = BranchFormat.get_default_format()
2022
return self._branch_format
2024
def set_branch_format(self, format):
2025
self._branch_format = format
2027
def get_converter(self, format=None):
2028
"""See BzrDirFormat.get_converter()."""
2030
format = BzrDirFormat.get_default_format()
2031
if not isinstance(self, format.__class__):
2032
# converting away from metadir is not implemented
2033
raise NotImplementedError(self.get_converter)
2034
return ConvertMetaToMeta(format)
2036
def get_format_string(self):
2037
"""See BzrDirFormat.get_format_string()."""
2038
return "Bazaar-NG meta directory, format 1\n"
2040
def get_format_description(self):
2041
"""See BzrDirFormat.get_format_description()."""
2042
return "Meta directory format 1"
2044
def _open(self, transport):
2045
"""See BzrDirFormat._open."""
2046
return BzrDirMeta1(transport, self)
2048
def __return_repository_format(self):
2049
"""Circular import protection."""
2050
if getattr(self, '_repository_format', None):
2051
return self._repository_format
2052
from bzrlib.repository import RepositoryFormat
2053
return RepositoryFormat.get_default_format()
2055
def __set_repository_format(self, value):
2056
"""Allow changing the repository format for metadir formats."""
2057
self._repository_format = value
2059
repository_format = property(__return_repository_format, __set_repository_format)
2061
def __get_workingtree_format(self):
2062
if self._workingtree_format is None:
2063
from bzrlib.workingtree import WorkingTreeFormat
2064
self._workingtree_format = WorkingTreeFormat.get_default_format()
2065
return self._workingtree_format
2067
def __set_workingtree_format(self, wt_format):
2068
self._workingtree_format = wt_format
2070
workingtree_format = property(__get_workingtree_format,
2071
__set_workingtree_format)
2074
# Register bzr control format
2075
BzrDirFormat.register_control_format(BzrDirFormat)
2077
# Register bzr formats
2078
BzrDirFormat.register_format(BzrDirFormat4())
2079
BzrDirFormat.register_format(BzrDirFormat5())
2080
BzrDirFormat.register_format(BzrDirFormat6())
2081
__default_format = BzrDirMetaFormat1()
2082
BzrDirFormat.register_format(__default_format)
2083
BzrDirFormat._default_format = __default_format
2086
class Converter(object):
2087
"""Converts a disk format object from one format to another."""
2089
def convert(self, to_convert, pb):
2090
"""Perform the conversion of to_convert, giving feedback via pb.
2092
:param to_convert: The disk object to convert.
2093
:param pb: a progress bar to use for progress information.
2096
def step(self, message):
2097
"""Update the pb by a step."""
2099
self.pb.update(message, self.count, self.total)
2102
class ConvertBzrDir4To5(Converter):
2103
"""Converts format 4 bzr dirs to format 5."""
2106
super(ConvertBzrDir4To5, self).__init__()
2107
self.converted_revs = set()
2108
self.absent_revisions = set()
2112
def convert(self, to_convert, pb):
2113
"""See Converter.convert()."""
2114
self.bzrdir = to_convert
2116
self.pb.note('starting upgrade from format 4 to 5')
2117
if isinstance(self.bzrdir.transport, LocalTransport):
2118
self.bzrdir.get_workingtree_transport(None).delete('stat-cache')
2119
self._convert_to_weaves()
2120
return BzrDir.open(self.bzrdir.root_transport.base)
2122
def _convert_to_weaves(self):
2123
self.pb.note('note: upgrade may be faster if all store files are ungzipped first')
2126
stat = self.bzrdir.transport.stat('weaves')
2127
if not S_ISDIR(stat.st_mode):
2128
self.bzrdir.transport.delete('weaves')
2129
self.bzrdir.transport.mkdir('weaves')
2130
except errors.NoSuchFile:
2131
self.bzrdir.transport.mkdir('weaves')
2132
# deliberately not a WeaveFile as we want to build it up slowly.
2133
self.inv_weave = Weave('inventory')
2134
# holds in-memory weaves for all files
2135
self.text_weaves = {}
2136
self.bzrdir.transport.delete('branch-format')
2137
self.branch = self.bzrdir.open_branch()
2138
self._convert_working_inv()
2139
rev_history = self.branch.revision_history()
2140
# to_read is a stack holding the revisions we still need to process;
2141
# appending to it adds new highest-priority revisions
2142
self.known_revisions = set(rev_history)
2143
self.to_read = rev_history[-1:]
2145
rev_id = self.to_read.pop()
2146
if (rev_id not in self.revisions
2147
and rev_id not in self.absent_revisions):
2148
self._load_one_rev(rev_id)
2150
to_import = self._make_order()
2151
for i, rev_id in enumerate(to_import):
2152
self.pb.update('converting revision', i, len(to_import))
2153
self._convert_one_rev(rev_id)
2155
self._write_all_weaves()
2156
self._write_all_revs()
2157
self.pb.note('upgraded to weaves:')
2158
self.pb.note(' %6d revisions and inventories', len(self.revisions))
2159
self.pb.note(' %6d revisions not present', len(self.absent_revisions))
2160
self.pb.note(' %6d texts', self.text_count)
2161
self._cleanup_spare_files_after_format4()
2162
self.branch._transport.put_bytes(
2164
BzrDirFormat5().get_format_string(),
2165
mode=self.bzrdir._get_file_mode())
2167
def _cleanup_spare_files_after_format4(self):
2168
# FIXME working tree upgrade foo.
2169
for n in 'merged-patches', 'pending-merged-patches':
2171
## assert os.path.getsize(p) == 0
2172
self.bzrdir.transport.delete(n)
2173
except errors.NoSuchFile:
2175
self.bzrdir.transport.delete_tree('inventory-store')
2176
self.bzrdir.transport.delete_tree('text-store')
2178
def _convert_working_inv(self):
2179
inv = xml4.serializer_v4.read_inventory(
2180
self.branch._transport.get('inventory'))
2181
new_inv_xml = xml5.serializer_v5.write_inventory_to_string(inv, working=True)
2182
self.branch._transport.put_bytes('inventory', new_inv_xml,
2183
mode=self.bzrdir._get_file_mode())
2185
def _write_all_weaves(self):
2186
controlweaves = WeaveStore(self.bzrdir.transport, prefixed=False)
2187
weave_transport = self.bzrdir.transport.clone('weaves')
2188
weaves = WeaveStore(weave_transport, prefixed=False)
2189
transaction = WriteTransaction()
2193
for file_id, file_weave in self.text_weaves.items():
2194
self.pb.update('writing weave', i, len(self.text_weaves))
2195
weaves._put_weave(file_id, file_weave, transaction)
2197
self.pb.update('inventory', 0, 1)
2198
controlweaves._put_weave('inventory', self.inv_weave, transaction)
2199
self.pb.update('inventory', 1, 1)
2203
def _write_all_revs(self):
2204
"""Write all revisions out in new form."""
2205
self.bzrdir.transport.delete_tree('revision-store')
2206
self.bzrdir.transport.mkdir('revision-store')
2207
revision_transport = self.bzrdir.transport.clone('revision-store')
2209
from bzrlib.xml5 import serializer_v5
2210
from bzrlib.repofmt.weaverepo import RevisionTextStore
2211
revision_store = RevisionTextStore(revision_transport,
2212
serializer_v5, False, versionedfile.PrefixMapper(),
2213
lambda:True, lambda:True)
2215
for i, rev_id in enumerate(self.converted_revs):
2216
self.pb.update('write revision', i, len(self.converted_revs))
2217
text = serializer_v5.write_revision_to_string(
2218
self.revisions[rev_id])
2220
revision_store.add_lines(key, None, osutils.split_lines(text))
2224
def _load_one_rev(self, rev_id):
2225
"""Load a revision object into memory.
2227
Any parents not either loaded or abandoned get queued to be
2229
self.pb.update('loading revision',
2230
len(self.revisions),
2231
len(self.known_revisions))
2232
if not self.branch.repository.has_revision(rev_id):
2234
self.pb.note('revision {%s} not present in branch; '
2235
'will be converted as a ghost',
2237
self.absent_revisions.add(rev_id)
2239
rev = self.branch.repository.get_revision(rev_id)
2240
for parent_id in rev.parent_ids:
2241
self.known_revisions.add(parent_id)
2242
self.to_read.append(parent_id)
2243
self.revisions[rev_id] = rev
2245
def _load_old_inventory(self, rev_id):
2246
old_inv_xml = self.branch.repository.inventory_store.get(rev_id).read()
2247
inv = xml4.serializer_v4.read_inventory_from_string(old_inv_xml)
2248
inv.revision_id = rev_id
2249
rev = self.revisions[rev_id]
2252
def _load_updated_inventory(self, rev_id):
2253
inv_xml = self.inv_weave.get_text(rev_id)
2254
inv = xml5.serializer_v5.read_inventory_from_string(inv_xml, rev_id)
2257
def _convert_one_rev(self, rev_id):
2258
"""Convert revision and all referenced objects to new format."""
2259
rev = self.revisions[rev_id]
2260
inv = self._load_old_inventory(rev_id)
2261
present_parents = [p for p in rev.parent_ids
2262
if p not in self.absent_revisions]
2263
self._convert_revision_contents(rev, inv, present_parents)
2264
self._store_new_inv(rev, inv, present_parents)
2265
self.converted_revs.add(rev_id)
2267
def _store_new_inv(self, rev, inv, present_parents):
2268
new_inv_xml = xml5.serializer_v5.write_inventory_to_string(inv)
2269
new_inv_sha1 = sha_string(new_inv_xml)
2270
self.inv_weave.add_lines(rev.revision_id,
2272
new_inv_xml.splitlines(True))
2273
rev.inventory_sha1 = new_inv_sha1
2275
def _convert_revision_contents(self, rev, inv, present_parents):
2276
"""Convert all the files within a revision.
2278
Also upgrade the inventory to refer to the text revision ids."""
2279
rev_id = rev.revision_id
2280
mutter('converting texts of revision {%s}',
2282
parent_invs = map(self._load_updated_inventory, present_parents)
2283
entries = inv.iter_entries()
2285
for path, ie in entries:
2286
self._convert_file_version(rev, ie, parent_invs)
2288
def _convert_file_version(self, rev, ie, parent_invs):
2289
"""Convert one version of one file.
2291
The file needs to be added into the weave if it is a merge
2292
of >=2 parents or if it's changed from its parent.
2294
file_id = ie.file_id
2295
rev_id = rev.revision_id
2296
w = self.text_weaves.get(file_id)
2299
self.text_weaves[file_id] = w
2300
text_changed = False
2301
parent_candiate_entries = ie.parent_candidates(parent_invs)
2302
heads = graph.Graph(self).heads(parent_candiate_entries.keys())
2303
# XXX: Note that this is unordered - and this is tolerable because
2304
# the previous code was also unordered.
2305
previous_entries = dict((head, parent_candiate_entries[head]) for head
2307
self.snapshot_ie(previous_entries, ie, w, rev_id)
2310
@symbol_versioning.deprecated_method(symbol_versioning.one_one)
2311
def get_parents(self, revision_ids):
2312
for revision_id in revision_ids:
2313
yield self.revisions[revision_id].parent_ids
2315
def get_parent_map(self, revision_ids):
2316
"""See graph._StackedParentsProvider.get_parent_map"""
2317
return dict((revision_id, self.revisions[revision_id])
2318
for revision_id in revision_ids
2319
if revision_id in self.revisions)
2321
def snapshot_ie(self, previous_revisions, ie, w, rev_id):
2322
# TODO: convert this logic, which is ~= snapshot to
2323
# a call to:. This needs the path figured out. rather than a work_tree
2324
# a v4 revision_tree can be given, or something that looks enough like
2325
# one to give the file content to the entry if it needs it.
2326
# and we need something that looks like a weave store for snapshot to
2328
#ie.snapshot(rev, PATH, previous_revisions, REVISION_TREE, InMemoryWeaveStore(self.text_weaves))
2329
if len(previous_revisions) == 1:
2330
previous_ie = previous_revisions.values()[0]
2331
if ie._unchanged(previous_ie):
2332
ie.revision = previous_ie.revision
2335
text = self.branch.repository._text_store.get(ie.text_id)
2336
file_lines = text.readlines()
2337
w.add_lines(rev_id, previous_revisions, file_lines)
2338
self.text_count += 1
2340
w.add_lines(rev_id, previous_revisions, [])
2341
ie.revision = rev_id
2343
def _make_order(self):
2344
"""Return a suitable order for importing revisions.
2346
The order must be such that an revision is imported after all
2347
its (present) parents.
2349
todo = set(self.revisions.keys())
2350
done = self.absent_revisions.copy()
2353
# scan through looking for a revision whose parents
2355
for rev_id in sorted(list(todo)):
2356
rev = self.revisions[rev_id]
2357
parent_ids = set(rev.parent_ids)
2358
if parent_ids.issubset(done):
2359
# can take this one now
2360
order.append(rev_id)
2366
class ConvertBzrDir5To6(Converter):
2367
"""Converts format 5 bzr dirs to format 6."""
2369
def convert(self, to_convert, pb):
2370
"""See Converter.convert()."""
2371
self.bzrdir = to_convert
2373
self.pb.note('starting upgrade from format 5 to 6')
2374
self._convert_to_prefixed()
2375
return BzrDir.open(self.bzrdir.root_transport.base)
2377
def _convert_to_prefixed(self):
2378
from bzrlib.store import TransportStore
2379
self.bzrdir.transport.delete('branch-format')
2380
for store_name in ["weaves", "revision-store"]:
2381
self.pb.note("adding prefixes to %s" % store_name)
2382
store_transport = self.bzrdir.transport.clone(store_name)
2383
store = TransportStore(store_transport, prefixed=True)
2384
for urlfilename in store_transport.list_dir('.'):
2385
filename = urlutils.unescape(urlfilename)
2386
if (filename.endswith(".weave") or
2387
filename.endswith(".gz") or
2388
filename.endswith(".sig")):
2389
file_id, suffix = os.path.splitext(filename)
2393
new_name = store._mapper.map((file_id,)) + suffix
2394
# FIXME keep track of the dirs made RBC 20060121
2396
store_transport.move(filename, new_name)
2397
except errors.NoSuchFile: # catches missing dirs strangely enough
2398
store_transport.mkdir(osutils.dirname(new_name))
2399
store_transport.move(filename, new_name)
2400
self.bzrdir.transport.put_bytes(
2402
BzrDirFormat6().get_format_string(),
2403
mode=self.bzrdir._get_file_mode())
2406
class ConvertBzrDir6ToMeta(Converter):
2407
"""Converts format 6 bzr dirs to metadirs."""
2409
def convert(self, to_convert, pb):
2410
"""See Converter.convert()."""
2411
from bzrlib.repofmt.weaverepo import RepositoryFormat7
2412
from bzrlib.branch import BzrBranchFormat5
2413
self.bzrdir = to_convert
2416
self.total = 20 # the steps we know about
2417
self.garbage_inventories = []
2418
self.dir_mode = self.bzrdir._get_dir_mode()
2419
self.file_mode = self.bzrdir._get_file_mode()
2421
self.pb.note('starting upgrade from format 6 to metadir')
2422
self.bzrdir.transport.put_bytes(
2424
"Converting to format 6",
2425
mode=self.file_mode)
2426
# its faster to move specific files around than to open and use the apis...
2427
# first off, nuke ancestry.weave, it was never used.
2429
self.step('Removing ancestry.weave')
2430
self.bzrdir.transport.delete('ancestry.weave')
2431
except errors.NoSuchFile:
2433
# find out whats there
2434
self.step('Finding branch files')
2435
last_revision = self.bzrdir.open_branch().last_revision()
2436
bzrcontents = self.bzrdir.transport.list_dir('.')
2437
for name in bzrcontents:
2438
if name.startswith('basis-inventory.'):
2439
self.garbage_inventories.append(name)
2440
# create new directories for repository, working tree and branch
2441
repository_names = [('inventory.weave', True),
2442
('revision-store', True),
2444
self.step('Upgrading repository ')
2445
self.bzrdir.transport.mkdir('repository', mode=self.dir_mode)
2446
self.make_lock('repository')
2447
# we hard code the formats here because we are converting into
2448
# the meta format. The meta format upgrader can take this to a
2449
# future format within each component.
2450
self.put_format('repository', RepositoryFormat7())
2451
for entry in repository_names:
2452
self.move_entry('repository', entry)
2454
self.step('Upgrading branch ')
2455
self.bzrdir.transport.mkdir('branch', mode=self.dir_mode)
2456
self.make_lock('branch')
2457
self.put_format('branch', BzrBranchFormat5())
2458
branch_files = [('revision-history', True),
2459
('branch-name', True),
2461
for entry in branch_files:
2462
self.move_entry('branch', entry)
2464
checkout_files = [('pending-merges', True),
2465
('inventory', True),
2466
('stat-cache', False)]
2467
# If a mandatory checkout file is not present, the branch does not have
2468
# a functional checkout. Do not create a checkout in the converted
2470
for name, mandatory in checkout_files:
2471
if mandatory and name not in bzrcontents:
2472
has_checkout = False
2476
if not has_checkout:
2477
self.pb.note('No working tree.')
2478
# If some checkout files are there, we may as well get rid of them.
2479
for name, mandatory in checkout_files:
2480
if name in bzrcontents:
2481
self.bzrdir.transport.delete(name)
2483
from bzrlib.workingtree import WorkingTreeFormat3
2484
self.step('Upgrading working tree')
2485
self.bzrdir.transport.mkdir('checkout', mode=self.dir_mode)
2486
self.make_lock('checkout')
2488
'checkout', WorkingTreeFormat3())
2489
self.bzrdir.transport.delete_multi(
2490
self.garbage_inventories, self.pb)
2491
for entry in checkout_files:
2492
self.move_entry('checkout', entry)
2493
if last_revision is not None:
2494
self.bzrdir.transport.put_bytes(
2495
'checkout/last-revision', last_revision)
2496
self.bzrdir.transport.put_bytes(
2498
BzrDirMetaFormat1().get_format_string(),
2499
mode=self.file_mode)
2500
return BzrDir.open(self.bzrdir.root_transport.base)
2502
def make_lock(self, name):
2503
"""Make a lock for the new control dir name."""
2504
self.step('Make %s lock' % name)
2505
ld = lockdir.LockDir(self.bzrdir.transport,
2507
file_modebits=self.file_mode,
2508
dir_modebits=self.dir_mode)
2511
def move_entry(self, new_dir, entry):
2512
"""Move then entry name into new_dir."""
2514
mandatory = entry[1]
2515
self.step('Moving %s' % name)
2517
self.bzrdir.transport.move(name, '%s/%s' % (new_dir, name))
2518
except errors.NoSuchFile:
2522
def put_format(self, dirname, format):
2523
self.bzrdir.transport.put_bytes('%s/format' % dirname,
2524
format.get_format_string(),
2528
class ConvertMetaToMeta(Converter):
2529
"""Converts the components of metadirs."""
2531
def __init__(self, target_format):
2532
"""Create a metadir to metadir converter.
2534
:param target_format: The final metadir format that is desired.
2536
self.target_format = target_format
2538
def convert(self, to_convert, pb):
2539
"""See Converter.convert()."""
2540
self.bzrdir = to_convert
2544
self.step('checking repository format')
2546
repo = self.bzrdir.open_repository()
2547
except errors.NoRepositoryPresent:
2550
if not isinstance(repo._format, self.target_format.repository_format.__class__):
2551
from bzrlib.repository import CopyConverter
2552
self.pb.note('starting repository conversion')
2553
converter = CopyConverter(self.target_format.repository_format)
2554
converter.convert(repo, pb)
2556
branch = self.bzrdir.open_branch()
2557
except errors.NotBranchError:
2560
# TODO: conversions of Branch and Tree should be done by
2561
# InterXFormat lookups/some sort of registry.
2562
# Avoid circular imports
2563
from bzrlib import branch as _mod_branch
2564
old = branch._format.__class__
2565
new = self.target_format.get_branch_format().__class__
2567
if (old == _mod_branch.BzrBranchFormat5 and
2568
new in (_mod_branch.BzrBranchFormat6,
2569
_mod_branch.BzrBranchFormat7)):
2570
branch_converter = _mod_branch.Converter5to6()
2571
elif (old == _mod_branch.BzrBranchFormat6 and
2572
new == _mod_branch.BzrBranchFormat7):
2573
branch_converter = _mod_branch.Converter6to7()
2575
raise errors.BadConversionTarget("No converter", new)
2576
branch_converter.convert(branch)
2577
branch = self.bzrdir.open_branch()
2578
old = branch._format.__class__
2580
tree = self.bzrdir.open_workingtree(recommend_upgrade=False)
2581
except (errors.NoWorkingTree, errors.NotLocalUrl):
2584
# TODO: conversions of Branch and Tree should be done by
2585
# InterXFormat lookups
2586
if (isinstance(tree, workingtree.WorkingTree3) and
2587
not isinstance(tree, workingtree_4.WorkingTree4) and
2588
isinstance(self.target_format.workingtree_format,
2589
workingtree_4.WorkingTreeFormat4)):
2590
workingtree_4.Converter3to4().convert(tree)
2594
# This is not in remote.py because it's small, and needs to be registered.
2595
# Putting it in remote.py creates a circular import problem.
2596
# we can make it a lazy object if the control formats is turned into something
2598
class RemoteBzrDirFormat(BzrDirMetaFormat1):
2599
"""Format representing bzrdirs accessed via a smart server"""
2601
def get_format_description(self):
2602
return 'bzr remote bzrdir'
2605
def probe_transport(klass, transport):
2606
"""Return a RemoteBzrDirFormat object if it looks possible."""
2608
medium = transport.get_smart_medium()
2609
except (NotImplementedError, AttributeError,
2610
errors.TransportNotPossible, errors.NoSmartMedium,
2611
errors.SmartProtocolError):
2612
# no smart server, so not a branch for this format type.
2613
raise errors.NotBranchError(path=transport.base)
2615
# Decline to open it if the server doesn't support our required
2616
# version (3) so that the VFS-based transport will do it.
2617
if medium.should_probe():
2619
server_version = medium.protocol_version()
2620
except errors.SmartProtocolError:
2621
# Apparently there's no usable smart server there, even though
2622
# the medium supports the smart protocol.
2623
raise errors.NotBranchError(path=transport.base)
2624
if server_version != '2':
2625
raise errors.NotBranchError(path=transport.base)
2628
def initialize_on_transport(self, transport):
2630
# hand off the request to the smart server
2631
client_medium = transport.get_smart_medium()
2632
except errors.NoSmartMedium:
2633
# TODO: lookup the local format from a server hint.
2634
local_dir_format = BzrDirMetaFormat1()
2635
return local_dir_format.initialize_on_transport(transport)
2636
client = _SmartClient(client_medium)
2637
path = client.remote_path_from_transport(transport)
2638
response = client.call('BzrDirFormat.initialize', path)
2639
if response[0] != 'ok':
2640
raise errors.SmartProtocolError('unexpected response code %s' % (response,))
2641
return remote.RemoteBzrDir(transport)
2643
def _open(self, transport):
2644
return remote.RemoteBzrDir(transport)
2646
def __eq__(self, other):
2647
if not isinstance(other, RemoteBzrDirFormat):
2649
return self.get_format_description() == other.get_format_description()
2652
BzrDirFormat.register_control_server_format(RemoteBzrDirFormat)
2655
class BzrDirFormatInfo(object):
2657
def __init__(self, native, deprecated, hidden, experimental):
2658
self.deprecated = deprecated
2659
self.native = native
2660
self.hidden = hidden
2661
self.experimental = experimental
2664
class BzrDirFormatRegistry(registry.Registry):
2665
"""Registry of user-selectable BzrDir subformats.
2667
Differs from BzrDirFormat._control_formats in that it provides sub-formats,
2668
e.g. BzrDirMeta1 with weave repository. Also, it's more user-oriented.
2672
"""Create a BzrDirFormatRegistry."""
2673
self._aliases = set()
2674
super(BzrDirFormatRegistry, self).__init__()
2677
"""Return a set of the format names which are aliases."""
2678
return frozenset(self._aliases)
2680
def register_metadir(self, key,
2681
repository_format, help, native=True, deprecated=False,
2687
"""Register a metadir subformat.
2689
These all use a BzrDirMetaFormat1 bzrdir, but can be parameterized
2690
by the Repository format.
2692
:param repository_format: The fully-qualified repository format class
2694
:param branch_format: Fully-qualified branch format class name as
2696
:param tree_format: Fully-qualified tree format class name as
2699
# This should be expanded to support setting WorkingTree and Branch
2700
# formats, once BzrDirMetaFormat1 supports that.
2701
def _load(full_name):
2702
mod_name, factory_name = full_name.rsplit('.', 1)
2704
mod = __import__(mod_name, globals(), locals(),
2706
except ImportError, e:
2707
raise ImportError('failed to load %s: %s' % (full_name, e))
2709
factory = getattr(mod, factory_name)
2710
except AttributeError:
2711
raise AttributeError('no factory %s in module %r'
2716
bd = BzrDirMetaFormat1()
2717
if branch_format is not None:
2718
bd.set_branch_format(_load(branch_format))
2719
if tree_format is not None:
2720
bd.workingtree_format = _load(tree_format)
2721
if repository_format is not None:
2722
bd.repository_format = _load(repository_format)
2724
self.register(key, helper, help, native, deprecated, hidden,
2725
experimental, alias)
2727
def register(self, key, factory, help, native=True, deprecated=False,
2728
hidden=False, experimental=False, alias=False):
2729
"""Register a BzrDirFormat factory.
2731
The factory must be a callable that takes one parameter: the key.
2732
It must produce an instance of the BzrDirFormat when called.
2734
This function mainly exists to prevent the info object from being
2737
registry.Registry.register(self, key, factory, help,
2738
BzrDirFormatInfo(native, deprecated, hidden, experimental))
2740
self._aliases.add(key)
2742
def register_lazy(self, key, module_name, member_name, help, native=True,
2743
deprecated=False, hidden=False, experimental=False, alias=False):
2744
registry.Registry.register_lazy(self, key, module_name, member_name,
2745
help, BzrDirFormatInfo(native, deprecated, hidden, experimental))
2747
self._aliases.add(key)
2749
def set_default(self, key):
2750
"""Set the 'default' key to be a clone of the supplied key.
2752
This method must be called once and only once.
2754
registry.Registry.register(self, 'default', self.get(key),
2755
self.get_help(key), info=self.get_info(key))
2756
self._aliases.add('default')
2758
def set_default_repository(self, key):
2759
"""Set the FormatRegistry default and Repository default.
2761
This is a transitional method while Repository.set_default_format
2764
if 'default' in self:
2765
self.remove('default')
2766
self.set_default(key)
2767
format = self.get('default')()
2769
def make_bzrdir(self, key):
2770
return self.get(key)()
2772
def help_topic(self, topic):
2773
output = textwrap.dedent("""\
2774
These formats can be used for creating branches, working trees, and
2778
default_realkey = None
2779
default_help = self.get_help('default')
2781
for key in self.keys():
2782
if key == 'default':
2784
help = self.get_help(key)
2785
if help == default_help:
2786
default_realkey = key
2788
help_pairs.append((key, help))
2790
def wrapped(key, help, info):
2792
help = '(native) ' + help
2793
return ':%s:\n%s\n\n' % (key,
2794
textwrap.fill(help, initial_indent=' ',
2795
subsequent_indent=' '))
2796
if default_realkey is not None:
2797
output += wrapped(default_realkey, '(default) %s' % default_help,
2798
self.get_info('default'))
2799
deprecated_pairs = []
2800
experimental_pairs = []
2801
for key, help in help_pairs:
2802
info = self.get_info(key)
2805
elif info.deprecated:
2806
deprecated_pairs.append((key, help))
2807
elif info.experimental:
2808
experimental_pairs.append((key, help))
2810
output += wrapped(key, help, info)
2811
if len(experimental_pairs) > 0:
2812
output += "Experimental formats are shown below.\n\n"
2813
for key, help in experimental_pairs:
2814
info = self.get_info(key)
2815
output += wrapped(key, help, info)
2816
if len(deprecated_pairs) > 0:
2817
output += "Deprecated formats are shown below.\n\n"
2818
for key, help in deprecated_pairs:
2819
info = self.get_info(key)
2820
output += wrapped(key, help, info)
2825
class RepositoryAcquisitionPolicy(object):
2826
"""Abstract base class for repository acquisition policies.
2828
A repository acquisition policy decides how a BzrDir acquires a repository
2829
for a branch that is being created. The most basic policy decision is
2830
whether to create a new repository or use an existing one.
2832
def __init__(self, stack_on, stack_on_pwd, require_stacking):
2835
:param stack_on: A location to stack on
2836
:param stack_on_pwd: If stack_on is relative, the location it is
2838
:param require_stacking: If True, it is a failure to not stack.
2840
self._stack_on = stack_on
2841
self._stack_on_pwd = stack_on_pwd
2842
self._require_stacking = require_stacking
2844
def configure_branch(self, branch):
2845
"""Apply any configuration data from this policy to the branch.
2847
Default implementation sets repository stacking.
2849
if self._stack_on is None:
2851
if self._stack_on_pwd is None:
2852
stack_on = self._stack_on
2855
stack_on = urlutils.rebase_url(self._stack_on,
2857
branch.bzrdir.root_transport.base)
2858
except errors.InvalidRebaseURLs:
2859
stack_on = self._get_full_stack_on()
2861
branch.set_stacked_on_url(stack_on)
2862
except errors.UnstackableBranchFormat:
2863
if self._require_stacking:
2866
def _get_full_stack_on(self):
2867
"""Get a fully-qualified URL for the stack_on location."""
2868
if self._stack_on is None:
2870
if self._stack_on_pwd is None:
2871
return self._stack_on
2873
return urlutils.join(self._stack_on_pwd, self._stack_on)
2875
def _add_fallback(self, repository):
2876
"""Add a fallback to the supplied repository, if stacking is set."""
2877
stack_on = self._get_full_stack_on()
2878
if stack_on is None:
2880
stacked_dir = BzrDir.open(stack_on)
2882
stacked_repo = stacked_dir.open_branch().repository
2883
except errors.NotBranchError:
2884
stacked_repo = stacked_dir.open_repository()
2886
repository.add_fallback_repository(stacked_repo)
2887
except errors.UnstackableRepositoryFormat:
2888
if self._require_stacking:
2891
def acquire_repository(self, make_working_trees=None, shared=False):
2892
"""Acquire a repository for this bzrdir.
2894
Implementations may create a new repository or use a pre-exising
2896
:param make_working_trees: If creating a repository, set
2897
make_working_trees to this value (if non-None)
2898
:param shared: If creating a repository, make it shared if True
2899
:return: A repository
2901
raise NotImplemented(RepositoryAcquisitionPolicy.acquire_repository)
2904
class CreateRepository(RepositoryAcquisitionPolicy):
2905
"""A policy of creating a new repository"""
2907
def __init__(self, bzrdir, stack_on=None, stack_on_pwd=None,
2908
require_stacking=False):
2911
:param bzrdir: The bzrdir to create the repository on.
2912
:param stack_on: A location to stack on
2913
:param stack_on_pwd: If stack_on is relative, the location it is
2916
RepositoryAcquisitionPolicy.__init__(self, stack_on, stack_on_pwd,
2918
self._bzrdir = bzrdir
2920
def acquire_repository(self, make_working_trees=None, shared=False):
2921
"""Implementation of RepositoryAcquisitionPolicy.acquire_repository
2923
Creates the desired repository in the bzrdir we already have.
2925
repository = self._bzrdir.create_repository(shared=shared)
2926
self._add_fallback(repository)
2927
if make_working_trees is not None:
2928
repository.set_make_working_trees(make_working_trees)
2932
class UseExistingRepository(RepositoryAcquisitionPolicy):
2933
"""A policy of reusing an existing repository"""
2935
def __init__(self, repository, stack_on=None, stack_on_pwd=None,
2936
require_stacking=False):
2939
:param repository: The repository to use.
2940
:param stack_on: A location to stack on
2941
:param stack_on_pwd: If stack_on is relative, the location it is
2944
RepositoryAcquisitionPolicy.__init__(self, stack_on, stack_on_pwd,
2946
self._repository = repository
2948
def acquire_repository(self, make_working_trees=None, shared=False):
2949
"""Implementation of RepositoryAcquisitionPolicy.acquire_repository
2951
Returns an existing repository to use
2953
self._add_fallback(self._repository)
2954
return self._repository
2957
format_registry = BzrDirFormatRegistry()
2958
format_registry.register('weave', BzrDirFormat6,
2959
'Pre-0.8 format. Slower than knit and does not'
2960
' support checkouts or shared repositories.',
2962
format_registry.register_metadir('knit',
2963
'bzrlib.repofmt.knitrepo.RepositoryFormatKnit1',
2964
'Format using knits. Recommended for interoperation with bzr <= 0.14.',
2965
branch_format='bzrlib.branch.BzrBranchFormat5',
2966
tree_format='bzrlib.workingtree.WorkingTreeFormat3')
2967
format_registry.register_metadir('metaweave',
2968
'bzrlib.repofmt.weaverepo.RepositoryFormat7',
2969
'Transitional format in 0.8. Slower than knit.',
2970
branch_format='bzrlib.branch.BzrBranchFormat5',
2971
tree_format='bzrlib.workingtree.WorkingTreeFormat3',
2973
format_registry.register_metadir('dirstate',
2974
'bzrlib.repofmt.knitrepo.RepositoryFormatKnit1',
2975
help='New in 0.15: Fast local operations. Compatible with bzr 0.8 and '
2976
'above when accessed over the network.',
2977
branch_format='bzrlib.branch.BzrBranchFormat5',
2978
# this uses bzrlib.workingtree.WorkingTreeFormat4 because importing
2979
# directly from workingtree_4 triggers a circular import.
2980
tree_format='bzrlib.workingtree.WorkingTreeFormat4',
2982
format_registry.register_metadir('dirstate-tags',
2983
'bzrlib.repofmt.knitrepo.RepositoryFormatKnit1',
2984
help='New in 0.15: Fast local operations and improved scaling for '
2985
'network operations. Additionally adds support for tags.'
2986
' Incompatible with bzr < 0.15.',
2987
branch_format='bzrlib.branch.BzrBranchFormat6',
2988
tree_format='bzrlib.workingtree.WorkingTreeFormat4',
2990
format_registry.register_metadir('rich-root',
2991
'bzrlib.repofmt.knitrepo.RepositoryFormatKnit4',
2992
help='New in 1.0. Better handling of tree roots. Incompatible with'
2994
branch_format='bzrlib.branch.BzrBranchFormat6',
2995
tree_format='bzrlib.workingtree.WorkingTreeFormat4',
2997
format_registry.register_metadir('dirstate-with-subtree',
2998
'bzrlib.repofmt.knitrepo.RepositoryFormatKnit3',
2999
help='New in 0.15: Fast local operations and improved scaling for '
3000
'network operations. Additionally adds support for versioning nested '
3001
'bzr branches. Incompatible with bzr < 0.15.',
3002
branch_format='bzrlib.branch.BzrBranchFormat6',
3003
tree_format='bzrlib.workingtree.WorkingTreeFormat4',
3007
format_registry.register_metadir('pack-0.92',
3008
'bzrlib.repofmt.pack_repo.RepositoryFormatKnitPack1',
3009
help='New in 0.92: Pack-based format with data compatible with '
3010
'dirstate-tags format repositories. Interoperates with '
3011
'bzr repositories before 0.92 but cannot be read by bzr < 0.92. '
3012
'Previously called knitpack-experimental. '
3013
'For more information, see '
3014
'http://doc.bazaar-vcs.org/latest/developers/packrepo.html.',
3015
branch_format='bzrlib.branch.BzrBranchFormat6',
3016
tree_format='bzrlib.workingtree.WorkingTreeFormat4',
3018
format_registry.register_metadir('pack-0.92-subtree',
3019
'bzrlib.repofmt.pack_repo.RepositoryFormatKnitPack3',
3020
help='New in 0.92: Pack-based format with data compatible with '
3021
'dirstate-with-subtree format repositories. Interoperates with '
3022
'bzr repositories before 0.92 but cannot be read by bzr < 0.92. '
3023
'Previously called knitpack-experimental. '
3024
'For more information, see '
3025
'http://doc.bazaar-vcs.org/latest/developers/packrepo.html.',
3026
branch_format='bzrlib.branch.BzrBranchFormat6',
3027
tree_format='bzrlib.workingtree.WorkingTreeFormat4',
3031
format_registry.register_metadir('rich-root-pack',
3032
'bzrlib.repofmt.pack_repo.RepositoryFormatKnitPack4',
3033
help='New in 1.0: Pack-based format with data compatible with '
3034
'rich-root format repositories. Incompatible with'
3036
branch_format='bzrlib.branch.BzrBranchFormat6',
3037
tree_format='bzrlib.workingtree.WorkingTreeFormat4',
3039
format_registry.register_metadir('1.6',
3040
'bzrlib.repofmt.pack_repo.RepositoryFormatKnitPack5',
3041
help='A branch and pack based repository that supports stacking. ',
3042
branch_format='bzrlib.branch.BzrBranchFormat7',
3043
tree_format='bzrlib.workingtree.WorkingTreeFormat4',
3045
format_registry.register_metadir('1.6.1-rich-root',
3046
'bzrlib.repofmt.pack_repo.RepositoryFormatKnitPack5RichRoot',
3047
help='A branch and pack based repository that supports stacking '
3048
'and rich root data (needed for bzr-svn). ',
3049
branch_format='bzrlib.branch.BzrBranchFormat7',
3050
tree_format='bzrlib.workingtree.WorkingTreeFormat4',
3052
# The following two formats should always just be aliases.
3053
format_registry.register_metadir('development',
3054
'bzrlib.repofmt.pack_repo.RepositoryFormatPackDevelopment1',
3055
help='Current development format. Can convert data to and from pack-0.92 '
3056
'(and anything compatible with pack-0.92) format repositories. '
3057
'Repositories and branches in this format can only be read by bzr.dev. '
3059
'http://doc.bazaar-vcs.org/latest/developers/development-repo.html '
3061
branch_format='bzrlib.branch.BzrBranchFormat7',
3062
tree_format='bzrlib.workingtree.WorkingTreeFormat4',
3066
format_registry.register_metadir('development-subtree',
3067
'bzrlib.repofmt.pack_repo.RepositoryFormatPackDevelopment1Subtree',
3068
help='Current development format, subtree variant. Can convert data to and '
3069
'from pack-0.92-subtree (and anything compatible with '
3070
'pack-0.92-subtree) format repositories. Repositories and branches in '
3071
'this format can only be read by bzr.dev. Please read '
3072
'http://doc.bazaar-vcs.org/latest/developers/development-repo.html '
3074
branch_format='bzrlib.branch.BzrBranchFormat7',
3075
tree_format='bzrlib.workingtree.WorkingTreeFormat4',
3079
# And the development formats which the will have aliased one of follow:
3080
format_registry.register_metadir('development1',
3081
'bzrlib.repofmt.pack_repo.RepositoryFormatPackDevelopment1',
3082
help='A branch and pack based repository that supports stacking. '
3084
'http://doc.bazaar-vcs.org/latest/developers/development-repo.html '
3086
branch_format='bzrlib.branch.BzrBranchFormat7',
3087
tree_format='bzrlib.workingtree.WorkingTreeFormat4',
3091
format_registry.register_metadir('development1-subtree',
3092
'bzrlib.repofmt.pack_repo.RepositoryFormatPackDevelopment1Subtree',
3093
help='A branch and pack based repository that supports stacking. '
3095
'http://doc.bazaar-vcs.org/latest/developers/development-repo.html '
3097
branch_format='bzrlib.branch.BzrBranchFormat7',
3098
tree_format='bzrlib.workingtree.WorkingTreeFormat4',
3102
# The current format that is made on 'bzr init'.
3103
format_registry.set_default('pack-0.92')
added
removed
bzrlib/bzrdir.py
