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# Copyright (C) 2005, 2006, 2007 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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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 warnings import warn
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config as _mod_config,
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revision as _mod_revision,
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from bzrlib.config import BranchConfig, TreeConfig
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from bzrlib.lockable_files import LockableFiles, TransportLock
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from bzrlib.tag import (
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from bzrlib.decorators import needs_read_lock, needs_write_lock
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from bzrlib.errors import (BzrError, BzrCheckError, DivergedBranches,
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HistoryMissing, InvalidRevisionId,
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InvalidRevisionNumber, LockError, NoSuchFile,
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NoSuchRevision, NoWorkingTree, NotVersionedError,
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NotBranchError, UninitializableFormat,
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UnlistableStore, UnlistableBranch,
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from bzrlib.hooks import Hooks
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from bzrlib.symbol_versioning import (deprecated_function,
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zero_eight, zero_nine, zero_sixteen,
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from bzrlib.trace import mutter, note
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BZR_BRANCH_FORMAT_4 = "Bazaar-NG branch, format 0.0.4\n"
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BZR_BRANCH_FORMAT_5 = "Bazaar-NG branch, format 5\n"
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BZR_BRANCH_FORMAT_6 = "Bazaar Branch Format 6 (bzr 0.15)\n"
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# TODO: Maybe include checks for common corruption of newlines, etc?
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# TODO: Some operations like log might retrieve the same revisions
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# repeatedly to calculate deltas. We could perhaps have a weakref
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# cache in memory to make this faster. In general anything can be
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# cached in memory between lock and unlock operations. .. nb thats
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# what the transaction identity map provides
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######################################################################
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"""Branch holding a history of revisions.
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Base directory/url of the branch.
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hooks: An instance of BranchHooks.
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# this is really an instance variable - FIXME move it there
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# override this to set the strategy for storing tags
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return DisabledTags(self)
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def __init__(self, *ignored, **ignored_too):
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self.tags = self._make_tags()
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self._revision_history_cache = None
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self._revision_id_to_revno_cache = None
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def break_lock(self):
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"""Break a lock if one is present from another instance.
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Uses the ui factory to ask for confirmation if the lock may be from
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This will probe the repository for its lock as well.
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self.control_files.break_lock()
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self.repository.break_lock()
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master = self.get_master_branch()
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if master is not None:
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@deprecated_method(zero_eight)
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def open_downlevel(base):
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"""Open a branch which may be of an old format."""
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return Branch.open(base, _unsupported=True)
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def open(base, _unsupported=False):
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"""Open the branch rooted at base.
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For instance, if the branch is at URL/.bzr/branch,
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Branch.open(URL) -> a Branch instance.
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control = bzrdir.BzrDir.open(base, _unsupported)
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return control.open_branch(_unsupported)
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def open_from_transport(transport, _unsupported=False):
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"""Open the branch rooted at transport"""
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control = bzrdir.BzrDir.open_from_transport(transport, _unsupported)
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return control.open_branch(_unsupported)
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def open_containing(url, possible_transports=None):
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"""Open an existing branch which contains url.
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This probes for a branch at url, and searches upwards from there.
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Basically we keep looking up until we find the control directory or
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run into the root. If there isn't one, raises NotBranchError.
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If there is one and it is either an unrecognised format or an unsupported
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format, UnknownFormatError or UnsupportedFormatError are raised.
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If there is one, it is returned, along with the unused portion of url.
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control, relpath = bzrdir.BzrDir.open_containing(url,
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return control.open_branch(), relpath
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@deprecated_function(zero_eight)
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def initialize(base):
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"""Create a new working tree and branch, rooted at 'base' (url)
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NOTE: This will soon be deprecated in favour of creation
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return bzrdir.BzrDir.create_standalone_workingtree(base).branch
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@deprecated_function(zero_eight)
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def setup_caching(self, cache_root):
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"""Subclasses that care about caching should override this, and set
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up cached stores located under cache_root.
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NOTE: This is unused.
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def get_config(self):
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return BranchConfig(self)
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return self.get_config().get_nickname()
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def _set_nick(self, nick):
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self.get_config().set_user_option('nickname', nick, warn_masked=True)
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nick = property(_get_nick, _set_nick)
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raise NotImplementedError(self.is_locked)
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def lock_write(self):
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raise NotImplementedError(self.lock_write)
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raise NotImplementedError(self.lock_read)
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raise NotImplementedError(self.unlock)
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def peek_lock_mode(self):
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"""Return lock mode for the Branch: 'r', 'w' or None"""
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raise NotImplementedError(self.peek_lock_mode)
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def get_physical_lock_status(self):
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raise NotImplementedError(self.get_physical_lock_status)
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def get_revision_id_to_revno_map(self):
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"""Return the revision_id => dotted revno map.
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This will be regenerated on demand, but will be cached.
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:return: A dictionary mapping revision_id => dotted revno.
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This dictionary should not be modified by the caller.
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if self._revision_id_to_revno_cache is not None:
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mapping = self._revision_id_to_revno_cache
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mapping = self._gen_revno_map()
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self._cache_revision_id_to_revno(mapping)
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# TODO: jam 20070417 Since this is being cached, should we be returning
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# I would rather not, and instead just declare that users should not
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# modify the return value.
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def _gen_revno_map(self):
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"""Create a new mapping from revision ids to dotted revnos.
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Dotted revnos are generated based on the current tip in the revision
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This is the worker function for get_revision_id_to_revno_map, which
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just caches the return value.
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:return: A dictionary mapping revision_id => dotted revno.
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last_revision = self.last_revision()
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revision_graph = self.repository.get_revision_graph(last_revision)
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merge_sorted_revisions = tsort.merge_sort(
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revision_id_to_revno = dict((rev_id, revno)
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for seq_num, rev_id, depth, revno, end_of_merge
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in merge_sorted_revisions)
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return revision_id_to_revno
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def leave_lock_in_place(self):
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"""Tell this branch object not to release the physical lock when this
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If lock_write doesn't return a token, then this method is not supported.
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self.control_files.leave_in_place()
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def dont_leave_lock_in_place(self):
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"""Tell this branch object to release the physical lock when this
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object is unlocked, even if it didn't originally acquire it.
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If lock_write doesn't return a token, then this method is not supported.
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self.control_files.dont_leave_in_place()
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def abspath(self, name):
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"""Return absolute filename for something in the branch
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XXX: Robert Collins 20051017 what is this used for? why is it a branch
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method and not a tree method.
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raise NotImplementedError(self.abspath)
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def bind(self, other):
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"""Bind the local branch the other branch.
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:param other: The branch to bind to
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raise errors.UpgradeRequired(self.base)
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def fetch(self, from_branch, last_revision=None, pb=None):
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"""Copy revisions from from_branch into this branch.
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:param from_branch: Where to copy from.
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:param last_revision: What revision to stop at (None for at the end
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:param pb: An optional progress bar to use.
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Returns the copied revision count and the failed revisions in a tuple:
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if self.base == from_branch.base:
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nested_pb = ui.ui_factory.nested_progress_bar()
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from_branch.lock_read()
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if last_revision is None:
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pb.update('get source history')
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last_revision = from_branch.last_revision()
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if last_revision is None:
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last_revision = _mod_revision.NULL_REVISION
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return self.repository.fetch(from_branch.repository,
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revision_id=last_revision,
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if nested_pb is not None:
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def get_bound_location(self):
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"""Return the URL of the branch we are bound to.
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Older format branches cannot bind, please be sure to use a metadir
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def get_old_bound_location(self):
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"""Return the URL of the branch we used to be bound to
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raise errors.UpgradeRequired(self.base)
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def get_commit_builder(self, parents, config=None, timestamp=None,
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timezone=None, committer=None, revprops=None,
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"""Obtain a CommitBuilder for this branch.
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:param parents: Revision ids of the parents of the new revision.
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:param config: Optional configuration to use.
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:param timestamp: Optional timestamp recorded for commit.
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:param timezone: Optional timezone for timestamp.
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:param committer: Optional committer to set for commit.
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:param revprops: Optional dictionary of revision properties.
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:param revision_id: Optional revision id.
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config = self.get_config()
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return self.repository.get_commit_builder(self, parents, config,
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timestamp, timezone, committer, revprops, revision_id)
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def get_master_branch(self):
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"""Return the branch we are bound to.
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:return: Either a Branch, or None
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def get_revision_delta(self, revno):
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"""Return the delta for one revision.
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The delta is relative to its mainline predecessor, or the
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empty tree for revision 1.
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assert isinstance(revno, int)
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rh = self.revision_history()
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if not (1 <= revno <= len(rh)):
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raise InvalidRevisionNumber(revno)
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return self.repository.get_revision_delta(rh[revno-1])
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@deprecated_method(zero_sixteen)
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def get_root_id(self):
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"""Return the id of this branches root
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Deprecated: branches don't have root ids-- trees do.
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Use basis_tree().get_root_id() instead.
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raise NotImplementedError(self.get_root_id)
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def print_file(self, file, revision_id):
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"""Print `file` to stdout."""
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raise NotImplementedError(self.print_file)
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def append_revision(self, *revision_ids):
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raise NotImplementedError(self.append_revision)
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def set_revision_history(self, rev_history):
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raise NotImplementedError(self.set_revision_history)
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def _cache_revision_history(self, rev_history):
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"""Set the cached revision history to rev_history.
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The revision_history method will use this cache to avoid regenerating
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the revision history.
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This API is semi-public; it only for use by subclasses, all other code
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should consider it to be private.
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self._revision_history_cache = rev_history
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def _cache_revision_id_to_revno(self, revision_id_to_revno):
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"""Set the cached revision_id => revno map to revision_id_to_revno.
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This API is semi-public; it only for use by subclasses, all other code
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should consider it to be private.
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self._revision_id_to_revno_cache = revision_id_to_revno
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def _clear_cached_state(self):
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"""Clear any cached data on this branch, e.g. cached revision history.
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This means the next call to revision_history will need to call
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_gen_revision_history.
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This API is semi-public; it only for use by subclasses, all other code
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should consider it to be private.
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self._revision_history_cache = None
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self._revision_id_to_revno_cache = None
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def _gen_revision_history(self):
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"""Return sequence of revision hashes on to this branch.
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Unlike revision_history, this method always regenerates or rereads the
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revision history, i.e. it does not cache the result, so repeated calls
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Concrete subclasses should override this instead of revision_history so
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that subclasses do not need to deal with caching logic.
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This API is semi-public; it only for use by subclasses, all other code
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should consider it to be private.
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raise NotImplementedError(self._gen_revision_history)
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def revision_history(self):
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"""Return sequence of revision hashes on to this branch.
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This method will cache the revision history for as long as it is safe to
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if self._revision_history_cache is not None:
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history = self._revision_history_cache
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history = self._gen_revision_history()
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self._cache_revision_history(history)
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"""Return current revision number for this branch.
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That is equivalent to the number of revisions committed to
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return len(self.revision_history())
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"""Older format branches cannot bind or unbind."""
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raise errors.UpgradeRequired(self.base)
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def set_append_revisions_only(self, enabled):
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"""Older format branches are never restricted to append-only"""
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raise errors.UpgradeRequired(self.base)
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def last_revision(self):
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"""Return last revision id, or None"""
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ph = self.revision_history()
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def last_revision_info(self):
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"""Return information about the last revision.
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:return: A tuple (revno, last_revision_id).
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rh = self.revision_history()
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return (revno, rh[-1])
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return (0, _mod_revision.NULL_REVISION)
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def missing_revisions(self, other, stop_revision=None):
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"""Return a list of new revisions that would perfectly fit.
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If self and other have not diverged, return a list of the revisions
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present in other, but missing from self.
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self_history = self.revision_history()
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self_len = len(self_history)
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other_history = other.revision_history()
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other_len = len(other_history)
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common_index = min(self_len, other_len) -1
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if common_index >= 0 and \
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self_history[common_index] != other_history[common_index]:
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raise DivergedBranches(self, other)
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if stop_revision is None:
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stop_revision = other_len
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assert isinstance(stop_revision, int)
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if stop_revision > other_len:
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raise errors.NoSuchRevision(self, stop_revision)
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return other_history[self_len:stop_revision]
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def update_revisions(self, other, stop_revision=None):
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"""Pull in new perfect-fit revisions.
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:param other: Another Branch to pull from
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:param stop_revision: Updated until the given revision
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raise NotImplementedError(self.update_revisions)
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def revision_id_to_revno(self, revision_id):
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"""Given a revision id, return its revno"""
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if _mod_revision.is_null(revision_id):
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revision_id = osutils.safe_revision_id(revision_id)
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history = self.revision_history()
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return history.index(revision_id) + 1
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raise errors.NoSuchRevision(self, revision_id)
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def get_rev_id(self, revno, history=None):
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"""Find the revision id of the specified revno."""
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history = self.revision_history()
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if revno <= 0 or revno > len(history):
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raise errors.NoSuchRevision(self, revno)
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return history[revno - 1]
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def pull(self, source, overwrite=False, stop_revision=None):
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"""Mirror source into this branch.
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This branch is considered to be 'local', having low latency.
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:returns: PullResult instance
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raise NotImplementedError(self.pull)
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def push(self, target, overwrite=False, stop_revision=None):
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"""Mirror this branch into target.
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This branch is considered to be 'local', having low latency.
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raise NotImplementedError(self.push)
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def basis_tree(self):
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"""Return `Tree` object for last revision."""
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return self.repository.revision_tree(self.last_revision())
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def rename_one(self, from_rel, to_rel):
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This can change the directory or the filename or both.
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raise NotImplementedError(self.rename_one)
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def move(self, from_paths, to_name):
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to_name must exist as a versioned directory.
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If to_name exists and is a directory, the files are moved into
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it, keeping their old names. If it is a directory,
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Note that to_name is only the last component of the new name;
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this doesn't change the directory.
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This returns a list of (from_path, to_path) pairs for each
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raise NotImplementedError(self.move)
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def get_parent(self):
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"""Return the parent location of the branch.
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This is the default location for push/pull/missing. The usual
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pattern is that the user can override it by specifying a
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raise NotImplementedError(self.get_parent)
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def _set_config_location(self, name, url, config=None,
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make_relative=False):
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config = self.get_config()
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url = urlutils.relative_url(self.base, url)
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config.set_user_option(name, url, warn_masked=True)
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def _get_config_location(self, name, config=None):
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config = self.get_config()
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location = config.get_user_option(name)
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def get_submit_branch(self):
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"""Return the submit location of the branch.
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This is the default location for bundle. The usual
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pattern is that the user can override it by specifying a
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return self.get_config().get_user_option('submit_branch')
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def set_submit_branch(self, location):
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"""Return the submit location of the branch.
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This is the default location for bundle. The usual
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pattern is that the user can override it by specifying a
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self.get_config().set_user_option('submit_branch', location,
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def get_public_branch(self):
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"""Return the public location of the branch.
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This is is used by merge directives.
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return self._get_config_location('public_branch')
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def set_public_branch(self, location):
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"""Return the submit location of the branch.
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This is the default location for bundle. The usual
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pattern is that the user can override it by specifying a
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self._set_config_location('public_branch', location)
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def get_push_location(self):
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"""Return the None or the location to push this branch to."""
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push_loc = self.get_config().get_user_option('push_location')
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def set_push_location(self, location):
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"""Set a new push location for this branch."""
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raise NotImplementedError(self.set_push_location)
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def set_parent(self, url):
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raise NotImplementedError(self.set_parent)
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"""Synchronise this branch with the master branch if any.
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:return: None or the last_revision pivoted out during the update.
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def check_revno(self, revno):
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Check whether a revno corresponds to any revision.
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Zero (the NULL revision) is considered valid.
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self.check_real_revno(revno)
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def check_real_revno(self, revno):
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Check whether a revno corresponds to a real revision.
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Zero (the NULL revision) is considered invalid
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if revno < 1 or revno > self.revno():
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raise InvalidRevisionNumber(revno)
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def clone(self, to_bzrdir, revision_id=None):
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"""Clone this branch into to_bzrdir preserving all semantic values.
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revision_id: if not None, the revision history in the new branch will
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be truncated to end with revision_id.
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result = self._format.initialize(to_bzrdir)
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self.copy_content_into(result, revision_id=revision_id)
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def sprout(self, to_bzrdir, revision_id=None):
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"""Create a new line of development from the branch, into to_bzrdir.
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revision_id: if not None, the revision history in the new branch will
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be truncated to end with revision_id.
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result = self._format.initialize(to_bzrdir)
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self.copy_content_into(result, revision_id=revision_id)
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result.set_parent(self.bzrdir.root_transport.base)
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def _synchronize_history(self, destination, revision_id):
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"""Synchronize last revision and revision history between branches.
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This version is most efficient when the destination is also a
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BzrBranch5, but works for BzrBranch6 as long as the revision
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history is the true lefthand parent history, and all of the revisions
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are in the destination's repository. If not, set_revision_history
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:param destination: The branch to copy the history into
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:param revision_id: The revision-id to truncate history at. May
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be None to copy complete history.
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if revision_id == _mod_revision.NULL_REVISION:
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new_history = self.revision_history()
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if revision_id is not None and new_history != []:
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revision_id = osutils.safe_revision_id(revision_id)
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new_history = new_history[:new_history.index(revision_id) + 1]
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rev = self.repository.get_revision(revision_id)
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new_history = rev.get_history(self.repository)[1:]
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destination.set_revision_history(new_history)
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def copy_content_into(self, destination, revision_id=None):
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"""Copy the content of self into destination.
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revision_id: if not None, the revision history in the new branch will
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be truncated to end with revision_id.
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self._synchronize_history(destination, revision_id)
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parent = self.get_parent()
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except errors.InaccessibleParent, e:
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mutter('parent was not accessible to copy: %s', e)
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destination.set_parent(parent)
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self.tags.merge_to(destination.tags)
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"""Check consistency of the branch.
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In particular this checks that revisions given in the revision-history
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do actually match up in the revision graph, and that they're all
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present in the repository.
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Callers will typically also want to check the repository.
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:return: A BranchCheckResult.
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mainline_parent_id = None
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for revision_id in self.revision_history():
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revision = self.repository.get_revision(revision_id)
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except errors.NoSuchRevision, e:
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raise errors.BzrCheckError("mainline revision {%s} not in repository"
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# In general the first entry on the revision history has no parents.
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# But it's not illegal for it to have parents listed; this can happen
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# in imports from Arch when the parents weren't reachable.
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if mainline_parent_id is not None:
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if mainline_parent_id not in revision.parent_ids:
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raise errors.BzrCheckError("previous revision {%s} not listed among "
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% (mainline_parent_id, revision_id))
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mainline_parent_id = revision_id
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return BranchCheckResult(self)
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def _get_checkout_format(self):
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"""Return the most suitable metadir for a checkout of this branch.
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Weaves are used if this branch's repository uses weaves.
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if isinstance(self.bzrdir, bzrdir.BzrDirPreSplitOut):
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from bzrlib.repofmt import weaverepo
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format = bzrdir.BzrDirMetaFormat1()
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format.repository_format = weaverepo.RepositoryFormat7()
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format = self.repository.bzrdir.checkout_metadir()
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format.set_branch_format(self._format)
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def create_checkout(self, to_location, revision_id=None,
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"""Create a checkout of a branch.
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:param to_location: The url to produce the checkout at
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:param revision_id: The revision to check out
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:param lightweight: If True, produce a lightweight checkout, otherwise,
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produce a bound branch (heavyweight checkout)
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:return: The tree of the created checkout
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t = transport.get_transport(to_location)
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format = self._get_checkout_format()
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checkout = format.initialize_on_transport(t)
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BranchReferenceFormat().initialize(checkout, self)
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format = self._get_checkout_format()
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checkout_branch = bzrdir.BzrDir.create_branch_convenience(
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to_location, force_new_tree=False, format=format)
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checkout = checkout_branch.bzrdir
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checkout_branch.bind(self)
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# pull up to the specified revision_id to set the initial
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# branch tip correctly, and seed it with history.
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checkout_branch.pull(self, stop_revision=revision_id)
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tree = checkout.create_workingtree(revision_id)
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basis_tree = tree.basis_tree()
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basis_tree.lock_read()
812
for path, file_id in basis_tree.iter_references():
813
reference_parent = self.reference_parent(file_id, path)
814
reference_parent.create_checkout(tree.abspath(path),
815
basis_tree.get_reference_revision(file_id, path),
821
def reference_parent(self, file_id, path):
822
"""Return the parent branch for a tree-reference file_id
823
:param file_id: The file_id of the tree reference
824
:param path: The path of the file_id in the tree
825
:return: A branch associated with the file_id
827
# FIXME should provide multiple branches, based on config
828
return Branch.open(self.bzrdir.root_transport.clone(path).base)
830
def supports_tags(self):
831
return self._format.supports_tags()
834
class BranchFormat(object):
835
"""An encapsulation of the initialization and open routines for a format.
837
Formats provide three things:
838
* An initialization routine,
842
Formats are placed in an dict by their format string for reference
843
during branch opening. Its not required that these be instances, they
844
can be classes themselves with class methods - it simply depends on
845
whether state is needed for a given format or not.
847
Once a format is deprecated, just deprecate the initialize and open
848
methods on the format class. Do not deprecate the object, as the
849
object will be created every time regardless.
852
_default_format = None
853
"""The default format used for new branches."""
856
"""The known formats."""
858
def __eq__(self, other):
859
return self.__class__ is other.__class__
861
def __ne__(self, other):
862
return not (self == other)
865
def find_format(klass, a_bzrdir):
866
"""Return the format for the branch object in a_bzrdir."""
868
transport = a_bzrdir.get_branch_transport(None)
869
format_string = transport.get("format").read()
870
return klass._formats[format_string]
872
raise NotBranchError(path=transport.base)
874
raise errors.UnknownFormatError(format=format_string)
877
def get_default_format(klass):
878
"""Return the current default format."""
879
return klass._default_format
881
def get_reference(self, a_bzrdir):
882
"""Get the target reference of the branch in a_bzrdir.
884
format probing must have been completed before calling
885
this method - it is assumed that the format of the branch
886
in a_bzrdir is correct.
888
:param a_bzrdir: The bzrdir to get the branch data from.
889
:return: None if the branch is not a reference branch.
893
def get_format_string(self):
894
"""Return the ASCII format string that identifies this format."""
895
raise NotImplementedError(self.get_format_string)
897
def get_format_description(self):
898
"""Return the short format description for this format."""
899
raise NotImplementedError(self.get_format_description)
901
def _initialize_helper(self, a_bzrdir, utf8_files, lock_type='metadir',
903
"""Initialize a branch in a bzrdir, with specified files
905
:param a_bzrdir: The bzrdir to initialize the branch in
906
:param utf8_files: The files to create as a list of
907
(filename, content) tuples
908
:param set_format: If True, set the format with
909
self.get_format_string. (BzrBranch4 has its format set
911
:return: a branch in this format
913
mutter('creating branch %r in %s', self, a_bzrdir.transport.base)
914
branch_transport = a_bzrdir.get_branch_transport(self)
916
'metadir': ('lock', lockdir.LockDir),
917
'branch4': ('branch-lock', lockable_files.TransportLock),
919
lock_name, lock_class = lock_map[lock_type]
920
control_files = lockable_files.LockableFiles(branch_transport,
921
lock_name, lock_class)
922
control_files.create_lock()
923
control_files.lock_write()
925
control_files.put_utf8('format', self.get_format_string())
927
for file, content in utf8_files:
928
control_files.put_utf8(file, content)
930
control_files.unlock()
931
return self.open(a_bzrdir, _found=True)
933
def initialize(self, a_bzrdir):
934
"""Create a branch of this format in a_bzrdir."""
935
raise NotImplementedError(self.initialize)
937
def is_supported(self):
938
"""Is this format supported?
940
Supported formats can be initialized and opened.
941
Unsupported formats may not support initialization or committing or
942
some other features depending on the reason for not being supported.
946
def open(self, a_bzrdir, _found=False):
947
"""Return the branch object for a_bzrdir
949
_found is a private parameter, do not use it. It is used to indicate
950
if format probing has already be done.
952
raise NotImplementedError(self.open)
955
def register_format(klass, format):
956
klass._formats[format.get_format_string()] = format
959
def set_default_format(klass, format):
960
klass._default_format = format
963
def unregister_format(klass, format):
964
assert klass._formats[format.get_format_string()] is format
965
del klass._formats[format.get_format_string()]
968
return self.get_format_string().rstrip()
970
def supports_tags(self):
971
"""True if this format supports tags stored in the branch"""
972
return False # by default
974
# XXX: Probably doesn't really belong here -- mbp 20070212
975
def _initialize_control_files(self, a_bzrdir, utf8_files, lock_filename,
977
branch_transport = a_bzrdir.get_branch_transport(self)
978
control_files = lockable_files.LockableFiles(branch_transport,
979
lock_filename, lock_class)
980
control_files.create_lock()
981
control_files.lock_write()
983
for filename, content in utf8_files:
984
control_files.put_utf8(filename, content)
986
control_files.unlock()
989
class BranchHooks(Hooks):
990
"""A dictionary mapping hook name to a list of callables for branch hooks.
992
e.g. ['set_rh'] Is the list of items to be called when the
993
set_revision_history function is invoked.
997
"""Create the default hooks.
999
These are all empty initially, because by default nothing should get
1002
Hooks.__init__(self)
1003
# Introduced in 0.15:
1004
# invoked whenever the revision history has been set
1005
# with set_revision_history. The api signature is
1006
# (branch, revision_history), and the branch will
1009
# invoked after a push operation completes.
1010
# the api signature is
1012
# containing the members
1013
# (source, local, master, old_revno, old_revid, new_revno, new_revid)
1014
# where local is the local target branch or None, master is the target
1015
# master branch, and the rest should be self explanatory. The source
1016
# is read locked and the target branches write locked. Source will
1017
# be the local low-latency branch.
1018
self['post_push'] = []
1019
# invoked after a pull operation completes.
1020
# the api signature is
1022
# containing the members
1023
# (source, local, master, old_revno, old_revid, new_revno, new_revid)
1024
# where local is the local branch or None, master is the target
1025
# master branch, and the rest should be self explanatory. The source
1026
# is read locked and the target branches write locked. The local
1027
# branch is the low-latency branch.
1028
self['post_pull'] = []
1029
# invoked after a commit operation completes.
1030
# the api signature is
1031
# (local, master, old_revno, old_revid, new_revno, new_revid)
1032
# old_revid is NULL_REVISION for the first commit to a branch.
1033
self['post_commit'] = []
1034
# invoked after a uncommit operation completes.
1035
# the api signature is
1036
# (local, master, old_revno, old_revid, new_revno, new_revid) where
1037
# local is the local branch or None, master is the target branch,
1038
# and an empty branch recieves new_revno of 0, new_revid of None.
1039
self['post_uncommit'] = []
1042
# install the default hooks into the Branch class.
1043
Branch.hooks = BranchHooks()
1046
class BzrBranchFormat4(BranchFormat):
1047
"""Bzr branch format 4.
1050
- a revision-history file.
1051
- a branch-lock lock file [ to be shared with the bzrdir ]
1054
def get_format_description(self):
1055
"""See BranchFormat.get_format_description()."""
1056
return "Branch format 4"
1058
def initialize(self, a_bzrdir):
1059
"""Create a branch of this format in a_bzrdir."""
1060
utf8_files = [('revision-history', ''),
1061
('branch-name', ''),
1063
return self._initialize_helper(a_bzrdir, utf8_files,
1064
lock_type='branch4', set_format=False)
1067
super(BzrBranchFormat4, self).__init__()
1068
self._matchingbzrdir = bzrdir.BzrDirFormat6()
1070
def open(self, a_bzrdir, _found=False):
1071
"""Return the branch object for a_bzrdir
1073
_found is a private parameter, do not use it. It is used to indicate
1074
if format probing has already be done.
1077
# we are being called directly and must probe.
1078
raise NotImplementedError
1079
return BzrBranch(_format=self,
1080
_control_files=a_bzrdir._control_files,
1082
_repository=a_bzrdir.open_repository())
1085
return "Bazaar-NG branch format 4"
1088
class BzrBranchFormat5(BranchFormat):
1089
"""Bzr branch format 5.
1092
- a revision-history file.
1094
- a lock dir guarding the branch itself
1095
- all of this stored in a branch/ subdirectory
1096
- works with shared repositories.
1098
This format is new in bzr 0.8.
1101
def get_format_string(self):
1102
"""See BranchFormat.get_format_string()."""
1103
return "Bazaar-NG branch format 5\n"
1105
def get_format_description(self):
1106
"""See BranchFormat.get_format_description()."""
1107
return "Branch format 5"
1109
def initialize(self, a_bzrdir):
1110
"""Create a branch of this format in a_bzrdir."""
1111
utf8_files = [('revision-history', ''),
1112
('branch-name', ''),
1114
return self._initialize_helper(a_bzrdir, utf8_files)
1117
super(BzrBranchFormat5, self).__init__()
1118
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
1120
def open(self, a_bzrdir, _found=False):
1121
"""Return the branch object for a_bzrdir
1123
_found is a private parameter, do not use it. It is used to indicate
1124
if format probing has already be done.
1127
format = BranchFormat.find_format(a_bzrdir)
1128
assert format.__class__ == self.__class__
1130
transport = a_bzrdir.get_branch_transport(None)
1131
control_files = lockable_files.LockableFiles(transport, 'lock',
1133
return BzrBranch5(_format=self,
1134
_control_files=control_files,
1136
_repository=a_bzrdir.find_repository())
1138
raise NotBranchError(path=transport.base)
1141
class BzrBranchFormat6(BzrBranchFormat5):
1142
"""Branch format with last-revision
1144
Unlike previous formats, this has no explicit revision history. Instead,
1145
this just stores the last-revision, and the left-hand history leading
1146
up to there is the history.
1148
This format was introduced in bzr 0.15
1151
def get_format_string(self):
1152
"""See BranchFormat.get_format_string()."""
1153
return "Bazaar Branch Format 6 (bzr 0.15)\n"
1155
def get_format_description(self):
1156
"""See BranchFormat.get_format_description()."""
1157
return "Branch format 6"
1159
def initialize(self, a_bzrdir):
1160
"""Create a branch of this format in a_bzrdir."""
1161
utf8_files = [('last-revision', '0 null:\n'),
1162
('branch-name', ''),
1163
('branch.conf', ''),
1166
return self._initialize_helper(a_bzrdir, utf8_files)
1168
def open(self, a_bzrdir, _found=False):
1169
"""Return the branch object for a_bzrdir
1171
_found is a private parameter, do not use it. It is used to indicate
1172
if format probing has already be done.
1175
format = BranchFormat.find_format(a_bzrdir)
1176
assert format.__class__ == self.__class__
1177
transport = a_bzrdir.get_branch_transport(None)
1178
control_files = lockable_files.LockableFiles(transport, 'lock',
1180
return BzrBranch6(_format=self,
1181
_control_files=control_files,
1183
_repository=a_bzrdir.find_repository())
1185
def supports_tags(self):
1189
class BranchReferenceFormat(BranchFormat):
1190
"""Bzr branch reference format.
1192
Branch references are used in implementing checkouts, they
1193
act as an alias to the real branch which is at some other url.
1200
def get_format_string(self):
1201
"""See BranchFormat.get_format_string()."""
1202
return "Bazaar-NG Branch Reference Format 1\n"
1204
def get_format_description(self):
1205
"""See BranchFormat.get_format_description()."""
1206
return "Checkout reference format 1"
1208
def get_reference(self, a_bzrdir):
1209
"""See BranchFormat.get_reference()."""
1210
transport = a_bzrdir.get_branch_transport(None)
1211
return transport.get('location').read()
1213
def initialize(self, a_bzrdir, target_branch=None):
1214
"""Create a branch of this format in a_bzrdir."""
1215
if target_branch is None:
1216
# this format does not implement branch itself, thus the implicit
1217
# creation contract must see it as uninitializable
1218
raise errors.UninitializableFormat(self)
1219
mutter('creating branch reference in %s', a_bzrdir.transport.base)
1220
branch_transport = a_bzrdir.get_branch_transport(self)
1221
branch_transport.put_bytes('location',
1222
target_branch.bzrdir.root_transport.base)
1223
branch_transport.put_bytes('format', self.get_format_string())
1224
return self.open(a_bzrdir, _found=True)
1227
super(BranchReferenceFormat, self).__init__()
1228
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
1230
def _make_reference_clone_function(format, a_branch):
1231
"""Create a clone() routine for a branch dynamically."""
1232
def clone(to_bzrdir, revision_id=None):
1233
"""See Branch.clone()."""
1234
return format.initialize(to_bzrdir, a_branch)
1235
# cannot obey revision_id limits when cloning a reference ...
1236
# FIXME RBC 20060210 either nuke revision_id for clone, or
1237
# emit some sort of warning/error to the caller ?!
1240
def open(self, a_bzrdir, _found=False, location=None):
1241
"""Return the branch that the branch reference in a_bzrdir points at.
1243
_found is a private parameter, do not use it. It is used to indicate
1244
if format probing has already be done.
1247
format = BranchFormat.find_format(a_bzrdir)
1248
assert format.__class__ == self.__class__
1249
if location is None:
1250
location = self.get_reference(a_bzrdir)
1251
real_bzrdir = bzrdir.BzrDir.open(location)
1252
result = real_bzrdir.open_branch()
1253
# this changes the behaviour of result.clone to create a new reference
1254
# rather than a copy of the content of the branch.
1255
# I did not use a proxy object because that needs much more extensive
1256
# testing, and we are only changing one behaviour at the moment.
1257
# If we decide to alter more behaviours - i.e. the implicit nickname
1258
# then this should be refactored to introduce a tested proxy branch
1259
# and a subclass of that for use in overriding clone() and ....
1261
result.clone = self._make_reference_clone_function(result)
1265
# formats which have no format string are not discoverable
1266
# and not independently creatable, so are not registered.
1267
__default_format = BzrBranchFormat5()
1268
BranchFormat.register_format(__default_format)
1269
BranchFormat.register_format(BranchReferenceFormat())
1270
BranchFormat.register_format(BzrBranchFormat6())
1271
BranchFormat.set_default_format(__default_format)
1272
_legacy_formats = [BzrBranchFormat4(),
1275
class BzrBranch(Branch):
1276
"""A branch stored in the actual filesystem.
1278
Note that it's "local" in the context of the filesystem; it doesn't
1279
really matter if it's on an nfs/smb/afs/coda/... share, as long as
1280
it's writable, and can be accessed via the normal filesystem API.
1283
def __init__(self, _format=None,
1284
_control_files=None, a_bzrdir=None, _repository=None):
1285
"""Create new branch object at a particular location."""
1286
Branch.__init__(self)
1287
if a_bzrdir is None:
1288
raise ValueError('a_bzrdir must be supplied')
1290
self.bzrdir = a_bzrdir
1291
# self._transport used to point to the directory containing the
1292
# control directory, but was not used - now it's just the transport
1293
# for the branch control files. mbp 20070212
1294
self._base = self.bzrdir.transport.clone('..').base
1295
self._format = _format
1296
if _control_files is None:
1297
raise ValueError('BzrBranch _control_files is None')
1298
self.control_files = _control_files
1299
self._transport = _control_files._transport
1300
self.repository = _repository
1303
return '%s(%r)' % (self.__class__.__name__, self.base)
1307
def _get_base(self):
1308
"""Returns the directory containing the control directory."""
1311
base = property(_get_base, doc="The URL for the root of this branch.")
1313
def abspath(self, name):
1314
"""See Branch.abspath."""
1315
return self.control_files._transport.abspath(name)
1318
@deprecated_method(zero_sixteen)
1320
def get_root_id(self):
1321
"""See Branch.get_root_id."""
1322
tree = self.repository.revision_tree(self.last_revision())
1323
return tree.inventory.root.file_id
1325
def is_locked(self):
1326
return self.control_files.is_locked()
1328
def lock_write(self, token=None):
1329
repo_token = self.repository.lock_write()
1331
token = self.control_files.lock_write(token=token)
1333
self.repository.unlock()
1337
def lock_read(self):
1338
self.repository.lock_read()
1340
self.control_files.lock_read()
1342
self.repository.unlock()
1346
# TODO: test for failed two phase locks. This is known broken.
1348
self.control_files.unlock()
1350
self.repository.unlock()
1351
if not self.control_files.is_locked():
1352
# we just released the lock
1353
self._clear_cached_state()
1355
def peek_lock_mode(self):
1356
if self.control_files._lock_count == 0:
1359
return self.control_files._lock_mode
1361
def get_physical_lock_status(self):
1362
return self.control_files.get_physical_lock_status()
1365
def print_file(self, file, revision_id):
1366
"""See Branch.print_file."""
1367
return self.repository.print_file(file, revision_id)
1370
def append_revision(self, *revision_ids):
1371
"""See Branch.append_revision."""
1372
revision_ids = [osutils.safe_revision_id(r) for r in revision_ids]
1373
for revision_id in revision_ids:
1374
_mod_revision.check_not_reserved_id(revision_id)
1375
mutter("add {%s} to revision-history" % revision_id)
1376
rev_history = self.revision_history()
1377
rev_history.extend(revision_ids)
1378
self.set_revision_history(rev_history)
1380
def _write_revision_history(self, history):
1381
"""Factored out of set_revision_history.
1383
This performs the actual writing to disk.
1384
It is intended to be called by BzrBranch5.set_revision_history."""
1385
self.control_files.put_bytes(
1386
'revision-history', '\n'.join(history))
1389
def set_revision_history(self, rev_history):
1390
"""See Branch.set_revision_history."""
1391
rev_history = [osutils.safe_revision_id(r) for r in rev_history]
1392
self._clear_cached_state()
1393
self._write_revision_history(rev_history)
1394
self._cache_revision_history(rev_history)
1395
for hook in Branch.hooks['set_rh']:
1396
hook(self, rev_history)
1399
def set_last_revision_info(self, revno, revision_id):
1400
revision_id = osutils.safe_revision_id(revision_id)
1401
history = self._lefthand_history(revision_id)
1402
assert len(history) == revno, '%d != %d' % (len(history), revno)
1403
self.set_revision_history(history)
1405
def _gen_revision_history(self):
1406
history = self.control_files.get('revision-history').read().split('\n')
1407
if history[-1:] == ['']:
1408
# There shouldn't be a trailing newline, but just in case.
1412
def _lefthand_history(self, revision_id, last_rev=None,
1414
# stop_revision must be a descendant of last_revision
1415
stop_graph = self.repository.get_revision_graph(revision_id)
1416
if (last_rev is not None and last_rev != _mod_revision.NULL_REVISION
1417
and last_rev not in stop_graph):
1418
# our previous tip is not merged into stop_revision
1419
raise errors.DivergedBranches(self, other_branch)
1420
# make a new revision history from the graph
1421
current_rev_id = revision_id
1423
while current_rev_id not in (None, _mod_revision.NULL_REVISION):
1424
new_history.append(current_rev_id)
1425
current_rev_id_parents = stop_graph[current_rev_id]
1427
current_rev_id = current_rev_id_parents[0]
1429
current_rev_id = None
1430
new_history.reverse()
1434
def generate_revision_history(self, revision_id, last_rev=None,
1436
"""Create a new revision history that will finish with revision_id.
1438
:param revision_id: the new tip to use.
1439
:param last_rev: The previous last_revision. If not None, then this
1440
must be a ancestory of revision_id, or DivergedBranches is raised.
1441
:param other_branch: The other branch that DivergedBranches should
1442
raise with respect to.
1444
revision_id = osutils.safe_revision_id(revision_id)
1445
self.set_revision_history(self._lefthand_history(revision_id,
1446
last_rev, other_branch))
1449
def update_revisions(self, other, stop_revision=None):
1450
"""See Branch.update_revisions."""
1453
if stop_revision is None:
1454
stop_revision = other.last_revision()
1455
if stop_revision is None:
1456
# if there are no commits, we're done.
1459
stop_revision = osutils.safe_revision_id(stop_revision)
1460
# whats the current last revision, before we fetch [and change it
1462
last_rev = _mod_revision.ensure_null(self.last_revision())
1463
# we fetch here regardless of whether we need to so that we pickup
1465
self.fetch(other, stop_revision)
1466
my_ancestry = self.repository.get_ancestry(last_rev,
1468
if stop_revision in my_ancestry:
1469
# last_revision is a descendant of stop_revision
1471
self.generate_revision_history(stop_revision, last_rev=last_rev,
1476
def basis_tree(self):
1477
"""See Branch.basis_tree."""
1478
return self.repository.revision_tree(self.last_revision())
1480
@deprecated_method(zero_eight)
1481
def working_tree(self):
1482
"""Create a Working tree object for this branch."""
1484
from bzrlib.transport.local import LocalTransport
1485
if (self.base.find('://') != -1 or
1486
not isinstance(self._transport, LocalTransport)):
1487
raise NoWorkingTree(self.base)
1488
return self.bzrdir.open_workingtree()
1491
def pull(self, source, overwrite=False, stop_revision=None,
1492
_hook_master=None, run_hooks=True):
1495
:param _hook_master: Private parameter - set the branch to
1496
be supplied as the master to push hooks.
1497
:param run_hooks: Private parameter - if false, this branch
1498
is being called because it's the master of the primary branch,
1499
so it should not run its hooks.
1501
result = PullResult()
1502
result.source_branch = source
1503
result.target_branch = self
1506
result.old_revno, result.old_revid = self.last_revision_info()
1508
self.update_revisions(source, stop_revision)
1509
except DivergedBranches:
1513
if stop_revision is None:
1514
stop_revision = source.last_revision()
1515
self.generate_revision_history(stop_revision)
1516
result.tag_conflicts = source.tags.merge_to(self.tags)
1517
result.new_revno, result.new_revid = self.last_revision_info()
1519
result.master_branch = _hook_master
1520
result.local_branch = self
1522
result.master_branch = self
1523
result.local_branch = None
1525
for hook in Branch.hooks['post_pull']:
1531
def _get_parent_location(self):
1532
_locs = ['parent', 'pull', 'x-pull']
1535
return self.control_files.get(l).read().strip('\n')
1541
def push(self, target, overwrite=False, stop_revision=None,
1542
_override_hook_source_branch=None):
1545
This is the basic concrete implementation of push()
1547
:param _override_hook_source_branch: If specified, run
1548
the hooks passing this Branch as the source, rather than self.
1549
This is for use of RemoteBranch, where push is delegated to the
1550
underlying vfs-based Branch.
1552
# TODO: Public option to disable running hooks - should be trivial but
1556
result = self._push_with_bound_branches(target, overwrite,
1558
_override_hook_source_branch=_override_hook_source_branch)
1563
def _push_with_bound_branches(self, target, overwrite,
1565
_override_hook_source_branch=None):
1566
"""Push from self into target, and into target's master if any.
1568
This is on the base BzrBranch class even though it doesn't support
1569
bound branches because the *target* might be bound.
1572
if _override_hook_source_branch:
1573
result.source_branch = _override_hook_source_branch
1574
for hook in Branch.hooks['post_push']:
1577
bound_location = target.get_bound_location()
1578
if bound_location and target.base != bound_location:
1579
# there is a master branch.
1581
# XXX: Why the second check? Is it even supported for a branch to
1582
# be bound to itself? -- mbp 20070507
1583
master_branch = target.get_master_branch()
1584
master_branch.lock_write()
1586
# push into the master from this branch.
1587
self._basic_push(master_branch, overwrite, stop_revision)
1588
# and push into the target branch from this. Note that we push from
1589
# this branch again, because its considered the highest bandwidth
1591
result = self._basic_push(target, overwrite, stop_revision)
1592
result.master_branch = master_branch
1593
result.local_branch = target
1597
master_branch.unlock()
1600
result = self._basic_push(target, overwrite, stop_revision)
1601
# TODO: Why set master_branch and local_branch if there's no
1602
# binding? Maybe cleaner to just leave them unset? -- mbp
1604
result.master_branch = target
1605
result.local_branch = None
1609
def _basic_push(self, target, overwrite, stop_revision):
1610
"""Basic implementation of push without bound branches or hooks.
1612
Must be called with self read locked and target write locked.
1614
result = PushResult()
1615
result.source_branch = self
1616
result.target_branch = target
1617
result.old_revno, result.old_revid = target.last_revision_info()
1619
target.update_revisions(self, stop_revision)
1620
except DivergedBranches:
1624
target.set_revision_history(self.revision_history())
1625
result.tag_conflicts = self.tags.merge_to(target.tags)
1626
result.new_revno, result.new_revid = target.last_revision_info()
1629
def get_parent(self):
1630
"""See Branch.get_parent."""
1632
assert self.base[-1] == '/'
1633
parent = self._get_parent_location()
1636
# This is an old-format absolute path to a local branch
1637
# turn it into a url
1638
if parent.startswith('/'):
1639
parent = urlutils.local_path_to_url(parent.decode('utf8'))
1641
return urlutils.join(self.base[:-1], parent)
1642
except errors.InvalidURLJoin, e:
1643
raise errors.InaccessibleParent(parent, self.base)
1645
def set_push_location(self, location):
1646
"""See Branch.set_push_location."""
1647
self.get_config().set_user_option(
1648
'push_location', location,
1649
store=_mod_config.STORE_LOCATION_NORECURSE)
1652
def set_parent(self, url):
1653
"""See Branch.set_parent."""
1654
# TODO: Maybe delete old location files?
1655
# URLs should never be unicode, even on the local fs,
1656
# FIXUP this and get_parent in a future branch format bump:
1657
# read and rewrite the file, and have the new format code read
1658
# using .get not .get_utf8. RBC 20060125
1660
if isinstance(url, unicode):
1662
url = url.encode('ascii')
1663
except UnicodeEncodeError:
1664
raise errors.InvalidURL(url,
1665
"Urls must be 7-bit ascii, "
1666
"use bzrlib.urlutils.escape")
1667
url = urlutils.relative_url(self.base, url)
1668
self._set_parent_location(url)
1670
def _set_parent_location(self, url):
1672
self.control_files._transport.delete('parent')
1674
assert isinstance(url, str)
1675
self.control_files.put_bytes('parent', url + '\n')
1677
@deprecated_function(zero_nine)
1678
def tree_config(self):
1679
"""DEPRECATED; call get_config instead.
1680
TreeConfig has become part of BranchConfig."""
1681
return TreeConfig(self)
1684
class BzrBranch5(BzrBranch):
1685
"""A format 5 branch. This supports new features over plan branches.
1687
It has support for a master_branch which is the data for bound branches.
1695
super(BzrBranch5, self).__init__(_format=_format,
1696
_control_files=_control_files,
1698
_repository=_repository)
1701
def pull(self, source, overwrite=False, stop_revision=None,
1703
"""Pull from source into self, updating my master if any.
1705
:param run_hooks: Private parameter - if false, this branch
1706
is being called because it's the master of the primary branch,
1707
so it should not run its hooks.
1709
bound_location = self.get_bound_location()
1710
master_branch = None
1711
if bound_location and source.base != bound_location:
1712
# not pulling from master, so we need to update master.
1713
master_branch = self.get_master_branch()
1714
master_branch.lock_write()
1717
# pull from source into master.
1718
master_branch.pull(source, overwrite, stop_revision,
1720
return super(BzrBranch5, self).pull(source, overwrite,
1721
stop_revision, _hook_master=master_branch,
1722
run_hooks=run_hooks)
1725
master_branch.unlock()
1727
def get_bound_location(self):
1729
return self.control_files.get_utf8('bound').read()[:-1]
1730
except errors.NoSuchFile:
1734
def get_master_branch(self):
1735
"""Return the branch we are bound to.
1737
:return: Either a Branch, or None
1739
This could memoise the branch, but if thats done
1740
it must be revalidated on each new lock.
1741
So for now we just don't memoise it.
1742
# RBC 20060304 review this decision.
1744
bound_loc = self.get_bound_location()
1748
return Branch.open(bound_loc)
1749
except (errors.NotBranchError, errors.ConnectionError), e:
1750
raise errors.BoundBranchConnectionFailure(
1754
def set_bound_location(self, location):
1755
"""Set the target where this branch is bound to.
1757
:param location: URL to the target branch
1760
self.control_files.put_utf8('bound', location+'\n')
1763
self.control_files._transport.delete('bound')
1769
def bind(self, other):
1770
"""Bind this branch to the branch other.
1772
This does not push or pull data between the branches, though it does
1773
check for divergence to raise an error when the branches are not
1774
either the same, or one a prefix of the other. That behaviour may not
1775
be useful, so that check may be removed in future.
1777
:param other: The branch to bind to
1780
# TODO: jam 20051230 Consider checking if the target is bound
1781
# It is debatable whether you should be able to bind to
1782
# a branch which is itself bound.
1783
# Committing is obviously forbidden,
1784
# but binding itself may not be.
1785
# Since we *have* to check at commit time, we don't
1786
# *need* to check here
1788
# we want to raise diverged if:
1789
# last_rev is not in the other_last_rev history, AND
1790
# other_last_rev is not in our history, and do it without pulling
1792
last_rev = _mod_revision.ensure_null(self.last_revision())
1793
if last_rev != _mod_revision.NULL_REVISION:
1796
other_last_rev = other.last_revision()
1797
if not _mod_revision.is_null(other_last_rev):
1798
# neither branch is new, we have to do some work to
1799
# ascertain diversion.
1800
remote_graph = other.repository.get_revision_graph(
1802
local_graph = self.repository.get_revision_graph(last_rev)
1803
if (last_rev not in remote_graph and
1804
other_last_rev not in local_graph):
1805
raise errors.DivergedBranches(self, other)
1808
self.set_bound_location(other.base)
1812
"""If bound, unbind"""
1813
return self.set_bound_location(None)
1817
"""Synchronise this branch with the master branch if any.
1819
:return: None or the last_revision that was pivoted out during the
1822
master = self.get_master_branch()
1823
if master is not None:
1824
old_tip = self.last_revision()
1825
self.pull(master, overwrite=True)
1826
if old_tip in self.repository.get_ancestry(
1827
_mod_revision.ensure_null(self.last_revision()),
1834
class BzrBranchExperimental(BzrBranch5):
1835
"""Bzr experimental branch format
1838
- a revision-history file.
1840
- a lock dir guarding the branch itself
1841
- all of this stored in a branch/ subdirectory
1842
- works with shared repositories.
1843
- a tag dictionary in the branch
1845
This format is new in bzr 0.15, but shouldn't be used for real data,
1848
This class acts as it's own BranchFormat.
1851
_matchingbzrdir = bzrdir.BzrDirMetaFormat1()
1854
def get_format_string(cls):
1855
"""See BranchFormat.get_format_string()."""
1856
return "Bazaar-NG branch format experimental\n"
1859
def get_format_description(cls):
1860
"""See BranchFormat.get_format_description()."""
1861
return "Experimental branch format"
1864
def get_reference(cls, a_bzrdir):
1865
"""Get the target reference of the branch in a_bzrdir.
1867
format probing must have been completed before calling
1868
this method - it is assumed that the format of the branch
1869
in a_bzrdir is correct.
1871
:param a_bzrdir: The bzrdir to get the branch data from.
1872
:return: None if the branch is not a reference branch.
1877
def _initialize_control_files(cls, a_bzrdir, utf8_files, lock_filename,
1879
branch_transport = a_bzrdir.get_branch_transport(cls)
1880
control_files = lockable_files.LockableFiles(branch_transport,
1881
lock_filename, lock_class)
1882
control_files.create_lock()
1883
control_files.lock_write()
1885
for filename, content in utf8_files:
1886
control_files.put_utf8(filename, content)
1888
control_files.unlock()
1891
def initialize(cls, a_bzrdir):
1892
"""Create a branch of this format in a_bzrdir."""
1893
utf8_files = [('format', cls.get_format_string()),
1894
('revision-history', ''),
1895
('branch-name', ''),
1898
cls._initialize_control_files(a_bzrdir, utf8_files,
1899
'lock', lockdir.LockDir)
1900
return cls.open(a_bzrdir, _found=True)
1903
def open(cls, a_bzrdir, _found=False):
1904
"""Return the branch object for a_bzrdir
1906
_found is a private parameter, do not use it. It is used to indicate
1907
if format probing has already be done.
1910
format = BranchFormat.find_format(a_bzrdir)
1911
assert format.__class__ == cls
1912
transport = a_bzrdir.get_branch_transport(None)
1913
control_files = lockable_files.LockableFiles(transport, 'lock',
1915
return cls(_format=cls,
1916
_control_files=control_files,
1918
_repository=a_bzrdir.find_repository())
1921
def is_supported(cls):
1924
def _make_tags(self):
1925
return BasicTags(self)
1928
def supports_tags(cls):
1932
BranchFormat.register_format(BzrBranchExperimental)
1935
class BzrBranch6(BzrBranch5):
1938
def last_revision_info(self):
1939
revision_string = self.control_files.get('last-revision').read()
1940
revno, revision_id = revision_string.rstrip('\n').split(' ', 1)
1941
revision_id = cache_utf8.get_cached_utf8(revision_id)
1943
return revno, revision_id
1945
def last_revision(self):
1946
"""Return last revision id, or None"""
1947
revision_id = self.last_revision_info()[1]
1948
if revision_id == _mod_revision.NULL_REVISION:
1952
def _write_last_revision_info(self, revno, revision_id):
1953
"""Simply write out the revision id, with no checks.
1955
Use set_last_revision_info to perform this safely.
1957
Does not update the revision_history cache.
1958
Intended to be called by set_last_revision_info and
1959
_write_revision_history.
1961
if revision_id is None:
1962
revision_id = 'null:'
1963
out_string = '%d %s\n' % (revno, revision_id)
1964
self.control_files.put_bytes('last-revision', out_string)
1967
def set_last_revision_info(self, revno, revision_id):
1968
revision_id = osutils.safe_revision_id(revision_id)
1969
if self._get_append_revisions_only():
1970
self._check_history_violation(revision_id)
1971
self._write_last_revision_info(revno, revision_id)
1972
self._clear_cached_state()
1974
def _check_history_violation(self, revision_id):
1975
last_revision = _mod_revision.ensure_null(self.last_revision())
1976
if _mod_revision.is_null(last_revision):
1978
if last_revision not in self._lefthand_history(revision_id):
1979
raise errors.AppendRevisionsOnlyViolation(self.base)
1981
def _gen_revision_history(self):
1982
"""Generate the revision history from last revision
1984
history = list(self.repository.iter_reverse_revision_history(
1985
self.last_revision()))
1989
def _write_revision_history(self, history):
1990
"""Factored out of set_revision_history.
1992
This performs the actual writing to disk, with format-specific checks.
1993
It is intended to be called by BzrBranch5.set_revision_history.
1995
if len(history) == 0:
1996
last_revision = 'null:'
1998
if history != self._lefthand_history(history[-1]):
1999
raise errors.NotLefthandHistory(history)
2000
last_revision = history[-1]
2001
if self._get_append_revisions_only():
2002
self._check_history_violation(last_revision)
2003
self._write_last_revision_info(len(history), last_revision)
2006
def append_revision(self, *revision_ids):
2007
revision_ids = [osutils.safe_revision_id(r) for r in revision_ids]
2008
if len(revision_ids) == 0:
2010
prev_revno, prev_revision = self.last_revision_info()
2011
for revision in self.repository.get_revisions(revision_ids):
2012
if prev_revision == _mod_revision.NULL_REVISION:
2013
if revision.parent_ids != []:
2014
raise errors.NotLeftParentDescendant(self, prev_revision,
2015
revision.revision_id)
2017
if revision.parent_ids[0] != prev_revision:
2018
raise errors.NotLeftParentDescendant(self, prev_revision,
2019
revision.revision_id)
2020
prev_revision = revision.revision_id
2021
self.set_last_revision_info(prev_revno + len(revision_ids),
2025
def _set_parent_location(self, url):
2026
"""Set the parent branch"""
2027
self._set_config_location('parent_location', url, make_relative=True)
2030
def _get_parent_location(self):
2031
"""Set the parent branch"""
2032
return self._get_config_location('parent_location')
2034
def set_push_location(self, location):
2035
"""See Branch.set_push_location."""
2036
self._set_config_location('push_location', location)
2038
def set_bound_location(self, location):
2039
"""See Branch.set_push_location."""
2041
config = self.get_config()
2042
if location is None:
2043
if config.get_user_option('bound') != 'True':
2046
config.set_user_option('bound', 'False', warn_masked=True)
2049
self._set_config_location('bound_location', location,
2051
config.set_user_option('bound', 'True', warn_masked=True)
2054
def _get_bound_location(self, bound):
2055
"""Return the bound location in the config file.
2057
Return None if the bound parameter does not match"""
2058
config = self.get_config()
2059
config_bound = (config.get_user_option('bound') == 'True')
2060
if config_bound != bound:
2062
return self._get_config_location('bound_location', config=config)
2064
def get_bound_location(self):
2065
"""See Branch.set_push_location."""
2066
return self._get_bound_location(True)
2068
def get_old_bound_location(self):
2069
"""See Branch.get_old_bound_location"""
2070
return self._get_bound_location(False)
2072
def set_append_revisions_only(self, enabled):
2077
self.get_config().set_user_option('append_revisions_only', value,
2080
def _get_append_revisions_only(self):
2081
value = self.get_config().get_user_option('append_revisions_only')
2082
return value == 'True'
2084
def _synchronize_history(self, destination, revision_id):
2085
"""Synchronize last revision and revision history between branches.
2087
This version is most efficient when the destination is also a
2088
BzrBranch6, but works for BzrBranch5, as long as the destination's
2089
repository contains all the lefthand ancestors of the intended
2090
last_revision. If not, set_last_revision_info will fail.
2092
:param destination: The branch to copy the history into
2093
:param revision_id: The revision-id to truncate history at. May
2094
be None to copy complete history.
2096
if revision_id is None:
2097
revno, revision_id = self.last_revision_info()
2099
# To figure out the revno for a random revision, we need to build
2100
# the revision history, and count its length.
2101
# We don't care about the order, just how long it is.
2102
# Alternatively, we could start at the current location, and count
2103
# backwards. But there is no guarantee that we will find it since
2104
# it may be a merged revision.
2105
revno = len(list(self.repository.iter_reverse_revision_history(
2107
destination.set_last_revision_info(revno, revision_id)
2109
def _make_tags(self):
2110
return BasicTags(self)
2113
######################################################################
2114
# results of operations
2117
class _Result(object):
2119
def _show_tag_conficts(self, to_file):
2120
if not getattr(self, 'tag_conflicts', None):
2122
to_file.write('Conflicting tags:\n')
2123
for name, value1, value2 in self.tag_conflicts:
2124
to_file.write(' %s\n' % (name, ))
2127
class PullResult(_Result):
2128
"""Result of a Branch.pull operation.
2130
:ivar old_revno: Revision number before pull.
2131
:ivar new_revno: Revision number after pull.
2132
:ivar old_revid: Tip revision id before pull.
2133
:ivar new_revid: Tip revision id after pull.
2134
:ivar source_branch: Source (local) branch object.
2135
:ivar master_branch: Master branch of the target, or None.
2136
:ivar target_branch: Target/destination branch object.
2140
# DEPRECATED: pull used to return the change in revno
2141
return self.new_revno - self.old_revno
2143
def report(self, to_file):
2144
if self.old_revid == self.new_revid:
2145
to_file.write('No revisions to pull.\n')
2147
to_file.write('Now on revision %d.\n' % self.new_revno)
2148
self._show_tag_conficts(to_file)
2151
class PushResult(_Result):
2152
"""Result of a Branch.push operation.
2154
:ivar old_revno: Revision number before push.
2155
:ivar new_revno: Revision number after push.
2156
:ivar old_revid: Tip revision id before push.
2157
:ivar new_revid: Tip revision id after push.
2158
:ivar source_branch: Source branch object.
2159
:ivar master_branch: Master branch of the target, or None.
2160
:ivar target_branch: Target/destination branch object.
2164
# DEPRECATED: push used to return the change in revno
2165
return self.new_revno - self.old_revno
2167
def report(self, to_file):
2168
"""Write a human-readable description of the result."""
2169
if self.old_revid == self.new_revid:
2170
to_file.write('No new revisions to push.\n')
2172
to_file.write('Pushed up to revision %d.\n' % self.new_revno)
2173
self._show_tag_conficts(to_file)
2176
class BranchCheckResult(object):
2177
"""Results of checking branch consistency.
2182
def __init__(self, branch):
2183
self.branch = branch
2185
def report_results(self, verbose):
2186
"""Report the check results via trace.note.
2188
:param verbose: Requests more detailed display of what was checked,
2191
note('checked branch %s format %s',
2193
self.branch._format)
2196
class Converter5to6(object):
2197
"""Perform an in-place upgrade of format 5 to format 6"""
2199
def convert(self, branch):
2200
# Data for 5 and 6 can peacefully coexist.
2201
format = BzrBranchFormat6()
2202
new_branch = format.open(branch.bzrdir, _found=True)
2204
# Copy source data into target
2205
new_branch.set_last_revision_info(*branch.last_revision_info())
2206
new_branch.set_parent(branch.get_parent())
2207
new_branch.set_bound_location(branch.get_bound_location())
2208
new_branch.set_push_location(branch.get_push_location())
2210
# New branch has no tags by default
2211
new_branch.tags._set_tag_dict({})
2213
# Copying done; now update target format
2214
new_branch.control_files.put_utf8('format',
2215
format.get_format_string())
2217
# Clean up old files
2218
new_branch.control_files._transport.delete('revision-history')
2220
branch.set_parent(None)
2223
branch.set_bound_location(None)
added
removed
bzrlib/branch.py
