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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 copy import deepcopy
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from unittest import TestSuite
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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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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_containing(url):
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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)
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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 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 _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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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 revision_id is None:
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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 bzrlib.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 bzrlib.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)
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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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raise NotImplementedError(self.get_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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new_history = self.revision_history()
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if revision_id is not None:
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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 repostory 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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except errors.FileExists:
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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()
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for path, file_id in basis_tree.iter_references():
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reference_parent = self.reference_parent(file_id, path)
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reference_parent.create_checkout(tree.abspath(path),
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basis_tree.get_reference_revision(file_id, path),
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def reference_parent(self, file_id, path):
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"""Return the parent branch for a tree-reference file_id
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:param file_id: The file_id of the tree reference
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:param path: The path of the file_id in the tree
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:return: A branch associated with the file_id
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# FIXME should provide multiple branches, based on config
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return Branch.open(self.bzrdir.root_transport.clone(path).base)
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def supports_tags(self):
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return self._format.supports_tags()
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class BranchFormat(object):
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"""An encapsulation of the initialization and open routines for a format.
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Formats provide three things:
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* An initialization routine,
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Formats are placed in an dict by their format string for reference
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during branch opening. Its not required that these be instances, they
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can be classes themselves with class methods - it simply depends on
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whether state is needed for a given format or not.
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Once a format is deprecated, just deprecate the initialize and open
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methods on the format class. Do not deprecate the object, as the
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object will be created every time regardless.
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_default_format = None
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"""The default format used for new branches."""
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"""The known formats."""
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def find_format(klass, a_bzrdir):
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"""Return the format for the branch object in a_bzrdir."""
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transport = a_bzrdir.get_branch_transport(None)
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format_string = transport.get("format").read()
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return klass._formats[format_string]
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raise NotBranchError(path=transport.base)
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raise errors.UnknownFormatError(format=format_string)
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def get_default_format(klass):
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"""Return the current default format."""
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return klass._default_format
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def get_format_string(self):
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"""Return the ASCII format string that identifies this format."""
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raise NotImplementedError(self.get_format_string)
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def get_format_description(self):
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"""Return the short format description for this format."""
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raise NotImplementedError(self.get_format_description)
824
def _initialize_helper(self, a_bzrdir, utf8_files, lock_type='metadir',
826
"""Initialize a branch in a bzrdir, with specified files
828
:param a_bzrdir: The bzrdir to initialize the branch in
829
:param utf8_files: The files to create as a list of
830
(filename, content) tuples
831
:param set_format: If True, set the format with
832
self.get_format_string. (BzrBranch4 has its format set
834
:return: a branch in this format
836
mutter('creating branch %r in %s', self, a_bzrdir.transport.base)
837
branch_transport = a_bzrdir.get_branch_transport(self)
839
'metadir': ('lock', lockdir.LockDir),
840
'branch4': ('branch-lock', lockable_files.TransportLock),
842
lock_name, lock_class = lock_map[lock_type]
843
control_files = lockable_files.LockableFiles(branch_transport,
844
lock_name, lock_class)
845
control_files.create_lock()
846
control_files.lock_write()
848
control_files.put_utf8('format', self.get_format_string())
850
for file, content in utf8_files:
851
control_files.put_utf8(file, content)
853
control_files.unlock()
854
return self.open(a_bzrdir, _found=True)
856
def initialize(self, a_bzrdir):
857
"""Create a branch of this format in a_bzrdir."""
858
raise NotImplementedError(self.initialize)
860
def is_supported(self):
861
"""Is this format supported?
863
Supported formats can be initialized and opened.
864
Unsupported formats may not support initialization or committing or
865
some other features depending on the reason for not being supported.
869
def open(self, a_bzrdir, _found=False):
870
"""Return the branch object for a_bzrdir
872
_found is a private parameter, do not use it. It is used to indicate
873
if format probing has already be done.
875
raise NotImplementedError(self.open)
878
def register_format(klass, format):
879
klass._formats[format.get_format_string()] = format
882
def set_default_format(klass, format):
883
klass._default_format = format
886
def unregister_format(klass, format):
887
assert klass._formats[format.get_format_string()] is format
888
del klass._formats[format.get_format_string()]
891
return self.get_format_string().rstrip()
893
def supports_tags(self):
894
"""True if this format supports tags stored in the branch"""
895
return False # by default
897
# XXX: Probably doesn't really belong here -- mbp 20070212
898
def _initialize_control_files(self, a_bzrdir, utf8_files, lock_filename,
900
branch_transport = a_bzrdir.get_branch_transport(self)
901
control_files = lockable_files.LockableFiles(branch_transport,
902
lock_filename, lock_class)
903
control_files.create_lock()
904
control_files.lock_write()
906
for filename, content in utf8_files:
907
control_files.put_utf8(filename, content)
909
control_files.unlock()
912
class BranchHooks(Hooks):
913
"""A dictionary mapping hook name to a list of callables for branch hooks.
915
e.g. ['set_rh'] Is the list of items to be called when the
916
set_revision_history function is invoked.
920
"""Create the default hooks.
922
These are all empty initially, because by default nothing should get
926
# Introduced in 0.15:
927
# invoked whenever the revision history has been set
928
# with set_revision_history. The api signature is
929
# (branch, revision_history), and the branch will
932
# invoked after a push operation completes.
933
# the api signature is
935
# containing the members
936
# (source, local, master, old_revno, old_revid, new_revno, new_revid)
937
# where local is the local branch or None, master is the target
938
# master branch, and the rest should be self explanatory. The source
939
# is read locked and the target branches write locked. Source will
940
# be the local low-latency branch.
941
self['post_push'] = []
942
# invoked after a pull operation completes.
943
# the api signature is
945
# containing the members
946
# (source, local, master, old_revno, old_revid, new_revno, new_revid)
947
# where local is the local branch or None, master is the target
948
# master branch, and the rest should be self explanatory. The source
949
# is read locked and the target branches write locked. The local
950
# branch is the low-latency branch.
951
self['post_pull'] = []
952
# invoked after a commit operation completes.
953
# the api signature is
954
# (local, master, old_revno, old_revid, new_revno, new_revid)
955
# old_revid is NULL_REVISION for the first commit to a branch.
956
self['post_commit'] = []
957
# invoked after a uncommit operation completes.
958
# the api signature is
959
# (local, master, old_revno, old_revid, new_revno, new_revid) where
960
# local is the local branch or None, master is the target branch,
961
# and an empty branch recieves new_revno of 0, new_revid of None.
962
self['post_uncommit'] = []
965
# install the default hooks into the Branch class.
966
Branch.hooks = BranchHooks()
969
class BzrBranchFormat4(BranchFormat):
970
"""Bzr branch format 4.
973
- a revision-history file.
974
- a branch-lock lock file [ to be shared with the bzrdir ]
977
def get_format_description(self):
978
"""See BranchFormat.get_format_description()."""
979
return "Branch format 4"
981
def initialize(self, a_bzrdir):
982
"""Create a branch of this format in a_bzrdir."""
983
utf8_files = [('revision-history', ''),
986
return self._initialize_helper(a_bzrdir, utf8_files,
987
lock_type='branch4', set_format=False)
990
super(BzrBranchFormat4, self).__init__()
991
self._matchingbzrdir = bzrdir.BzrDirFormat6()
993
def open(self, a_bzrdir, _found=False):
994
"""Return the branch object for a_bzrdir
996
_found is a private parameter, do not use it. It is used to indicate
997
if format probing has already be done.
1000
# we are being called directly and must probe.
1001
raise NotImplementedError
1002
return BzrBranch(_format=self,
1003
_control_files=a_bzrdir._control_files,
1005
_repository=a_bzrdir.open_repository())
1008
return "Bazaar-NG branch format 4"
1011
class BzrBranchFormat5(BranchFormat):
1012
"""Bzr branch format 5.
1015
- a revision-history file.
1017
- a lock dir guarding the branch itself
1018
- all of this stored in a branch/ subdirectory
1019
- works with shared repositories.
1021
This format is new in bzr 0.8.
1024
def get_format_string(self):
1025
"""See BranchFormat.get_format_string()."""
1026
return "Bazaar-NG branch format 5\n"
1028
def get_format_description(self):
1029
"""See BranchFormat.get_format_description()."""
1030
return "Branch format 5"
1032
def initialize(self, a_bzrdir):
1033
"""Create a branch of this format in a_bzrdir."""
1034
utf8_files = [('revision-history', ''),
1035
('branch-name', ''),
1037
return self._initialize_helper(a_bzrdir, utf8_files)
1040
super(BzrBranchFormat5, self).__init__()
1041
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
1043
def open(self, a_bzrdir, _found=False):
1044
"""Return the branch object for a_bzrdir
1046
_found is a private parameter, do not use it. It is used to indicate
1047
if format probing has already be done.
1050
format = BranchFormat.find_format(a_bzrdir)
1051
assert format.__class__ == self.__class__
1052
transport = a_bzrdir.get_branch_transport(None)
1053
control_files = lockable_files.LockableFiles(transport, 'lock',
1055
return BzrBranch5(_format=self,
1056
_control_files=control_files,
1058
_repository=a_bzrdir.find_repository())
1061
class BzrBranchFormat6(BzrBranchFormat5):
1062
"""Branch format with last-revision
1064
Unlike previous formats, this has no explicit revision history. Instead,
1065
this just stores the last-revision, and the left-hand history leading
1066
up to there is the history.
1068
This format was introduced in bzr 0.15
1071
def get_format_string(self):
1072
"""See BranchFormat.get_format_string()."""
1073
return "Bazaar Branch Format 6 (bzr 0.15)\n"
1075
def get_format_description(self):
1076
"""See BranchFormat.get_format_description()."""
1077
return "Branch format 6"
1079
def initialize(self, a_bzrdir):
1080
"""Create a branch of this format in a_bzrdir."""
1081
utf8_files = [('last-revision', '0 null:\n'),
1082
('branch-name', ''),
1083
('branch.conf', ''),
1086
return self._initialize_helper(a_bzrdir, utf8_files)
1088
def open(self, a_bzrdir, _found=False):
1089
"""Return the branch object for a_bzrdir
1091
_found is a private parameter, do not use it. It is used to indicate
1092
if format probing has already be done.
1095
format = BranchFormat.find_format(a_bzrdir)
1096
assert format.__class__ == self.__class__
1097
transport = a_bzrdir.get_branch_transport(None)
1098
control_files = lockable_files.LockableFiles(transport, 'lock',
1100
return BzrBranch6(_format=self,
1101
_control_files=control_files,
1103
_repository=a_bzrdir.find_repository())
1105
def supports_tags(self):
1109
class BranchReferenceFormat(BranchFormat):
1110
"""Bzr branch reference format.
1112
Branch references are used in implementing checkouts, they
1113
act as an alias to the real branch which is at some other url.
1120
def get_format_string(self):
1121
"""See BranchFormat.get_format_string()."""
1122
return "Bazaar-NG Branch Reference Format 1\n"
1124
def get_format_description(self):
1125
"""See BranchFormat.get_format_description()."""
1126
return "Checkout reference format 1"
1128
def initialize(self, a_bzrdir, target_branch=None):
1129
"""Create a branch of this format in a_bzrdir."""
1130
if target_branch is None:
1131
# this format does not implement branch itself, thus the implicit
1132
# creation contract must see it as uninitializable
1133
raise errors.UninitializableFormat(self)
1134
mutter('creating branch reference in %s', a_bzrdir.transport.base)
1135
branch_transport = a_bzrdir.get_branch_transport(self)
1136
branch_transport.put_bytes('location',
1137
target_branch.bzrdir.root_transport.base)
1138
branch_transport.put_bytes('format', self.get_format_string())
1139
return self.open(a_bzrdir, _found=True)
1142
super(BranchReferenceFormat, self).__init__()
1143
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
1145
def _make_reference_clone_function(format, a_branch):
1146
"""Create a clone() routine for a branch dynamically."""
1147
def clone(to_bzrdir, revision_id=None):
1148
"""See Branch.clone()."""
1149
return format.initialize(to_bzrdir, a_branch)
1150
# cannot obey revision_id limits when cloning a reference ...
1151
# FIXME RBC 20060210 either nuke revision_id for clone, or
1152
# emit some sort of warning/error to the caller ?!
1155
def open(self, a_bzrdir, _found=False):
1156
"""Return the branch that the branch reference in a_bzrdir points at.
1158
_found is a private parameter, do not use it. It is used to indicate
1159
if format probing has already be done.
1162
format = BranchFormat.find_format(a_bzrdir)
1163
assert format.__class__ == self.__class__
1164
transport = a_bzrdir.get_branch_transport(None)
1165
real_bzrdir = bzrdir.BzrDir.open(transport.get('location').read())
1166
result = real_bzrdir.open_branch()
1167
# this changes the behaviour of result.clone to create a new reference
1168
# rather than a copy of the content of the branch.
1169
# I did not use a proxy object because that needs much more extensive
1170
# testing, and we are only changing one behaviour at the moment.
1171
# If we decide to alter more behaviours - i.e. the implicit nickname
1172
# then this should be refactored to introduce a tested proxy branch
1173
# and a subclass of that for use in overriding clone() and ....
1175
result.clone = self._make_reference_clone_function(result)
1179
# formats which have no format string are not discoverable
1180
# and not independently creatable, so are not registered.
1181
__default_format = BzrBranchFormat5()
1182
BranchFormat.register_format(__default_format)
1183
BranchFormat.register_format(BranchReferenceFormat())
1184
BranchFormat.register_format(BzrBranchFormat6())
1185
BranchFormat.set_default_format(__default_format)
1186
_legacy_formats = [BzrBranchFormat4(),
1189
class BzrBranch(Branch):
1190
"""A branch stored in the actual filesystem.
1192
Note that it's "local" in the context of the filesystem; it doesn't
1193
really matter if it's on an nfs/smb/afs/coda/... share, as long as
1194
it's writable, and can be accessed via the normal filesystem API.
1197
def __init__(self, _format=None,
1198
_control_files=None, a_bzrdir=None, _repository=None):
1199
"""Create new branch object at a particular location."""
1200
Branch.__init__(self)
1201
if a_bzrdir is None:
1202
raise ValueError('a_bzrdir must be supplied')
1204
self.bzrdir = a_bzrdir
1205
# self._transport used to point to the directory containing the
1206
# control directory, but was not used - now it's just the transport
1207
# for the branch control files. mbp 20070212
1208
self._base = self.bzrdir.transport.clone('..').base
1209
self._format = _format
1210
if _control_files is None:
1211
raise ValueError('BzrBranch _control_files is None')
1212
self.control_files = _control_files
1213
self._transport = _control_files._transport
1214
self.repository = _repository
1217
return '%s(%r)' % (self.__class__.__name__, self.base)
1221
def _get_base(self):
1222
"""Returns the directory containing the control directory."""
1225
base = property(_get_base, doc="The URL for the root of this branch.")
1227
def abspath(self, name):
1228
"""See Branch.abspath."""
1229
return self.control_files._transport.abspath(name)
1232
@deprecated_method(zero_sixteen)
1234
def get_root_id(self):
1235
"""See Branch.get_root_id."""
1236
tree = self.repository.revision_tree(self.last_revision())
1237
return tree.inventory.root.file_id
1239
def is_locked(self):
1240
return self.control_files.is_locked()
1242
def lock_write(self, token=None):
1243
repo_token = self.repository.lock_write()
1245
token = self.control_files.lock_write(token=token)
1247
self.repository.unlock()
1251
def lock_read(self):
1252
self.repository.lock_read()
1254
self.control_files.lock_read()
1256
self.repository.unlock()
1260
# TODO: test for failed two phase locks. This is known broken.
1262
self.control_files.unlock()
1264
self.repository.unlock()
1265
if not self.control_files.is_locked():
1266
# we just released the lock
1267
self._clear_cached_state()
1269
def peek_lock_mode(self):
1270
if self.control_files._lock_count == 0:
1273
return self.control_files._lock_mode
1275
def get_physical_lock_status(self):
1276
return self.control_files.get_physical_lock_status()
1279
def print_file(self, file, revision_id):
1280
"""See Branch.print_file."""
1281
return self.repository.print_file(file, revision_id)
1284
def append_revision(self, *revision_ids):
1285
"""See Branch.append_revision."""
1286
revision_ids = [osutils.safe_revision_id(r) for r in revision_ids]
1287
for revision_id in revision_ids:
1288
_mod_revision.check_not_reserved_id(revision_id)
1289
mutter("add {%s} to revision-history" % revision_id)
1290
rev_history = self.revision_history()
1291
rev_history.extend(revision_ids)
1292
self.set_revision_history(rev_history)
1294
def _write_revision_history(self, history):
1295
"""Factored out of set_revision_history.
1297
This performs the actual writing to disk.
1298
It is intended to be called by BzrBranch5.set_revision_history."""
1299
self.control_files.put_bytes(
1300
'revision-history', '\n'.join(history))
1303
def set_revision_history(self, rev_history):
1304
"""See Branch.set_revision_history."""
1305
rev_history = [osutils.safe_revision_id(r) for r in rev_history]
1306
self._write_revision_history(rev_history)
1307
self._cache_revision_history(rev_history)
1308
for hook in Branch.hooks['set_rh']:
1309
hook(self, rev_history)
1312
def set_last_revision_info(self, revno, revision_id):
1313
revision_id = osutils.safe_revision_id(revision_id)
1314
history = self._lefthand_history(revision_id)
1315
assert len(history) == revno, '%d != %d' % (len(history), revno)
1316
self.set_revision_history(history)
1318
def _gen_revision_history(self):
1319
history = self.control_files.get('revision-history').read().split('\n')
1320
if history[-1:] == ['']:
1321
# There shouldn't be a trailing newline, but just in case.
1325
def _lefthand_history(self, revision_id, last_rev=None,
1327
# stop_revision must be a descendant of last_revision
1328
stop_graph = self.repository.get_revision_graph(revision_id)
1329
if last_rev is not None and last_rev not in stop_graph:
1330
# our previous tip is not merged into stop_revision
1331
raise errors.DivergedBranches(self, other_branch)
1332
# make a new revision history from the graph
1333
current_rev_id = revision_id
1335
while current_rev_id not in (None, _mod_revision.NULL_REVISION):
1336
new_history.append(current_rev_id)
1337
current_rev_id_parents = stop_graph[current_rev_id]
1339
current_rev_id = current_rev_id_parents[0]
1341
current_rev_id = None
1342
new_history.reverse()
1346
def generate_revision_history(self, revision_id, last_rev=None,
1348
"""Create a new revision history that will finish with revision_id.
1350
:param revision_id: the new tip to use.
1351
:param last_rev: The previous last_revision. If not None, then this
1352
must be a ancestory of revision_id, or DivergedBranches is raised.
1353
:param other_branch: The other branch that DivergedBranches should
1354
raise with respect to.
1356
revision_id = osutils.safe_revision_id(revision_id)
1357
self.set_revision_history(self._lefthand_history(revision_id,
1358
last_rev, other_branch))
1361
def update_revisions(self, other, stop_revision=None):
1362
"""See Branch.update_revisions."""
1365
if stop_revision is None:
1366
stop_revision = other.last_revision()
1367
if stop_revision is None:
1368
# if there are no commits, we're done.
1371
stop_revision = osutils.safe_revision_id(stop_revision)
1372
# whats the current last revision, before we fetch [and change it
1374
last_rev = self.last_revision()
1375
# we fetch here regardless of whether we need to so that we pickup
1377
self.fetch(other, stop_revision)
1378
my_ancestry = self.repository.get_ancestry(last_rev)
1379
if stop_revision in my_ancestry:
1380
# last_revision is a descendant of stop_revision
1382
self.generate_revision_history(stop_revision, last_rev=last_rev,
1387
def basis_tree(self):
1388
"""See Branch.basis_tree."""
1389
return self.repository.revision_tree(self.last_revision())
1391
@deprecated_method(zero_eight)
1392
def working_tree(self):
1393
"""Create a Working tree object for this branch."""
1395
from bzrlib.transport.local import LocalTransport
1396
if (self.base.find('://') != -1 or
1397
not isinstance(self._transport, LocalTransport)):
1398
raise NoWorkingTree(self.base)
1399
return self.bzrdir.open_workingtree()
1402
def pull(self, source, overwrite=False, stop_revision=None,
1403
_hook_master=None, _run_hooks=True):
1406
:param _hook_master: Private parameter - set the branch to
1407
be supplied as the master to push hooks.
1408
:param _run_hooks: Private parameter - allow disabling of
1409
hooks, used when pushing to a master branch.
1411
result = PullResult()
1412
result.source_branch = source
1413
result.target_branch = self
1416
result.old_revno, result.old_revid = self.last_revision_info()
1418
self.update_revisions(source, stop_revision)
1419
except DivergedBranches:
1423
if stop_revision is None:
1424
stop_revision = source.last_revision()
1425
self.generate_revision_history(stop_revision)
1426
result.tag_conflicts = source.tags.merge_to(self.tags)
1427
result.new_revno, result.new_revid = self.last_revision_info()
1429
result.master_branch = _hook_master
1430
result.local_branch = self
1432
result.master_branch = self
1433
result.local_branch = None
1435
for hook in Branch.hooks['post_pull']:
1441
def _get_parent_location(self):
1442
_locs = ['parent', 'pull', 'x-pull']
1445
return self.control_files.get(l).read().strip('\n')
1451
def push(self, target, overwrite=False, stop_revision=None,
1452
_hook_master=None, _run_hooks=True):
1455
:param _hook_master: Private parameter - set the branch to
1456
be supplied as the master to push hooks.
1457
:param _run_hooks: Private parameter - allow disabling of
1458
hooks, used when pushing to a master branch.
1460
result = PushResult()
1461
result.source_branch = self
1462
result.target_branch = target
1465
result.old_revno, result.old_revid = target.last_revision_info()
1467
target.update_revisions(self, stop_revision)
1468
except DivergedBranches:
1472
target.set_revision_history(self.revision_history())
1473
result.tag_conflicts = self.tags.merge_to(target.tags)
1474
result.new_revno, result.new_revid = target.last_revision_info()
1476
result.master_branch = _hook_master
1477
result.local_branch = target
1479
result.master_branch = target
1480
result.local_branch = None
1482
for hook in Branch.hooks['post_push']:
1488
def get_parent(self):
1489
"""See Branch.get_parent."""
1491
assert self.base[-1] == '/'
1492
parent = self._get_parent_location()
1495
# This is an old-format absolute path to a local branch
1496
# turn it into a url
1497
if parent.startswith('/'):
1498
parent = urlutils.local_path_to_url(parent.decode('utf8'))
1500
return urlutils.join(self.base[:-1], parent)
1501
except errors.InvalidURLJoin, e:
1502
raise errors.InaccessibleParent(parent, self.base)
1504
def get_push_location(self):
1505
"""See Branch.get_push_location."""
1506
push_loc = self.get_config().get_user_option('push_location')
1509
def set_push_location(self, location):
1510
"""See Branch.set_push_location."""
1511
self.get_config().set_user_option(
1512
'push_location', location,
1513
store=_mod_config.STORE_LOCATION_NORECURSE)
1516
def set_parent(self, url):
1517
"""See Branch.set_parent."""
1518
# TODO: Maybe delete old location files?
1519
# URLs should never be unicode, even on the local fs,
1520
# FIXUP this and get_parent in a future branch format bump:
1521
# read and rewrite the file, and have the new format code read
1522
# using .get not .get_utf8. RBC 20060125
1524
if isinstance(url, unicode):
1526
url = url.encode('ascii')
1527
except UnicodeEncodeError:
1528
raise bzrlib.errors.InvalidURL(url,
1529
"Urls must be 7-bit ascii, "
1530
"use bzrlib.urlutils.escape")
1531
url = urlutils.relative_url(self.base, url)
1532
self._set_parent_location(url)
1534
def _set_parent_location(self, url):
1536
self.control_files._transport.delete('parent')
1538
assert isinstance(url, str)
1539
self.control_files.put_bytes('parent', url + '\n')
1541
@deprecated_function(zero_nine)
1542
def tree_config(self):
1543
"""DEPRECATED; call get_config instead.
1544
TreeConfig has become part of BranchConfig."""
1545
return TreeConfig(self)
1548
class BzrBranch5(BzrBranch):
1549
"""A format 5 branch. This supports new features over plan branches.
1551
It has support for a master_branch which is the data for bound branches.
1559
super(BzrBranch5, self).__init__(_format=_format,
1560
_control_files=_control_files,
1562
_repository=_repository)
1565
def pull(self, source, overwrite=False, stop_revision=None,
1567
"""Extends branch.pull to be bound branch aware.
1569
:param _run_hooks: Private parameter used to force hook running
1570
off during bound branch double-pushing.
1572
bound_location = self.get_bound_location()
1573
master_branch = None
1574
if bound_location and source.base != bound_location:
1575
# not pulling from master, so we need to update master.
1576
master_branch = self.get_master_branch()
1577
master_branch.lock_write()
1580
# pull from source into master.
1581
master_branch.pull(source, overwrite, stop_revision,
1583
return super(BzrBranch5, self).pull(source, overwrite,
1584
stop_revision, _hook_master=master_branch,
1585
_run_hooks=_run_hooks)
1588
master_branch.unlock()
1591
def push(self, target, overwrite=False, stop_revision=None):
1592
"""Updates branch.push to be bound branch aware."""
1593
bound_location = target.get_bound_location()
1594
master_branch = None
1595
if bound_location and target.base != bound_location:
1596
# not pushing to master, so we need to update master.
1597
master_branch = target.get_master_branch()
1598
master_branch.lock_write()
1601
# push into the master from this branch.
1602
super(BzrBranch5, self).push(master_branch, overwrite,
1603
stop_revision, _run_hooks=False)
1604
# and push into the target branch from this. Note that we push from
1605
# this branch again, because its considered the highest bandwidth
1607
return super(BzrBranch5, self).push(target, overwrite,
1608
stop_revision, _hook_master=master_branch)
1611
master_branch.unlock()
1613
def get_bound_location(self):
1615
return self.control_files.get_utf8('bound').read()[:-1]
1616
except errors.NoSuchFile:
1620
def get_master_branch(self):
1621
"""Return the branch we are bound to.
1623
:return: Either a Branch, or None
1625
This could memoise the branch, but if thats done
1626
it must be revalidated on each new lock.
1627
So for now we just don't memoise it.
1628
# RBC 20060304 review this decision.
1630
bound_loc = self.get_bound_location()
1634
return Branch.open(bound_loc)
1635
except (errors.NotBranchError, errors.ConnectionError), e:
1636
raise errors.BoundBranchConnectionFailure(
1640
def set_bound_location(self, location):
1641
"""Set the target where this branch is bound to.
1643
:param location: URL to the target branch
1646
self.control_files.put_utf8('bound', location+'\n')
1649
self.control_files._transport.delete('bound')
1655
def bind(self, other):
1656
"""Bind this branch to the branch other.
1658
This does not push or pull data between the branches, though it does
1659
check for divergence to raise an error when the branches are not
1660
either the same, or one a prefix of the other. That behaviour may not
1661
be useful, so that check may be removed in future.
1663
:param other: The branch to bind to
1666
# TODO: jam 20051230 Consider checking if the target is bound
1667
# It is debatable whether you should be able to bind to
1668
# a branch which is itself bound.
1669
# Committing is obviously forbidden,
1670
# but binding itself may not be.
1671
# Since we *have* to check at commit time, we don't
1672
# *need* to check here
1674
# we want to raise diverged if:
1675
# last_rev is not in the other_last_rev history, AND
1676
# other_last_rev is not in our history, and do it without pulling
1678
last_rev = self.last_revision()
1679
if last_rev is not None:
1682
other_last_rev = other.last_revision()
1683
if other_last_rev is not None:
1684
# neither branch is new, we have to do some work to
1685
# ascertain diversion.
1686
remote_graph = other.repository.get_revision_graph(
1688
local_graph = self.repository.get_revision_graph(last_rev)
1689
if (last_rev not in remote_graph and
1690
other_last_rev not in local_graph):
1691
raise errors.DivergedBranches(self, other)
1694
self.set_bound_location(other.base)
1698
"""If bound, unbind"""
1699
return self.set_bound_location(None)
1703
"""Synchronise this branch with the master branch if any.
1705
:return: None or the last_revision that was pivoted out during the
1708
master = self.get_master_branch()
1709
if master is not None:
1710
old_tip = self.last_revision()
1711
self.pull(master, overwrite=True)
1712
if old_tip in self.repository.get_ancestry(self.last_revision()):
1718
class BzrBranchExperimental(BzrBranch5):
1719
"""Bzr experimental branch format
1722
- a revision-history file.
1724
- a lock dir guarding the branch itself
1725
- all of this stored in a branch/ subdirectory
1726
- works with shared repositories.
1727
- a tag dictionary in the branch
1729
This format is new in bzr 0.15, but shouldn't be used for real data,
1732
This class acts as it's own BranchFormat.
1735
_matchingbzrdir = bzrdir.BzrDirMetaFormat1()
1738
def get_format_string(cls):
1739
"""See BranchFormat.get_format_string()."""
1740
return "Bazaar-NG branch format experimental\n"
1743
def get_format_description(cls):
1744
"""See BranchFormat.get_format_description()."""
1745
return "Experimental branch format"
1748
def _initialize_control_files(cls, a_bzrdir, utf8_files, lock_filename,
1750
branch_transport = a_bzrdir.get_branch_transport(cls)
1751
control_files = lockable_files.LockableFiles(branch_transport,
1752
lock_filename, lock_class)
1753
control_files.create_lock()
1754
control_files.lock_write()
1756
for filename, content in utf8_files:
1757
control_files.put_utf8(filename, content)
1759
control_files.unlock()
1762
def initialize(cls, a_bzrdir):
1763
"""Create a branch of this format in a_bzrdir."""
1764
utf8_files = [('format', cls.get_format_string()),
1765
('revision-history', ''),
1766
('branch-name', ''),
1769
cls._initialize_control_files(a_bzrdir, utf8_files,
1770
'lock', lockdir.LockDir)
1771
return cls.open(a_bzrdir, _found=True)
1774
def open(cls, a_bzrdir, _found=False):
1775
"""Return the branch object for a_bzrdir
1777
_found is a private parameter, do not use it. It is used to indicate
1778
if format probing has already be done.
1781
format = BranchFormat.find_format(a_bzrdir)
1782
assert format.__class__ == cls
1783
transport = a_bzrdir.get_branch_transport(None)
1784
control_files = lockable_files.LockableFiles(transport, 'lock',
1786
return cls(_format=cls,
1787
_control_files=control_files,
1789
_repository=a_bzrdir.find_repository())
1792
def is_supported(cls):
1795
def _make_tags(self):
1796
return BasicTags(self)
1799
def supports_tags(cls):
1803
BranchFormat.register_format(BzrBranchExperimental)
1806
class BzrBranch6(BzrBranch5):
1809
def last_revision_info(self):
1810
revision_string = self.control_files.get('last-revision').read()
1811
revno, revision_id = revision_string.rstrip('\n').split(' ', 1)
1812
revision_id = cache_utf8.get_cached_utf8(revision_id)
1814
return revno, revision_id
1816
def last_revision(self):
1817
"""Return last revision id, or None"""
1818
revision_id = self.last_revision_info()[1]
1819
if revision_id == _mod_revision.NULL_REVISION:
1823
def _write_last_revision_info(self, revno, revision_id):
1824
"""Simply write out the revision id, with no checks.
1826
Use set_last_revision_info to perform this safely.
1828
Does not update the revision_history cache.
1829
Intended to be called by set_last_revision_info and
1830
_write_revision_history.
1832
if revision_id is None:
1833
revision_id = 'null:'
1834
out_string = '%d %s\n' % (revno, revision_id)
1835
self.control_files.put_bytes('last-revision', out_string)
1838
def set_last_revision_info(self, revno, revision_id):
1839
revision_id = osutils.safe_revision_id(revision_id)
1840
if self._get_append_revisions_only():
1841
self._check_history_violation(revision_id)
1842
self._write_last_revision_info(revno, revision_id)
1843
self._clear_cached_state()
1845
def _check_history_violation(self, revision_id):
1846
last_revision = self.last_revision()
1847
if last_revision is None:
1849
if last_revision not in self._lefthand_history(revision_id):
1850
raise errors.AppendRevisionsOnlyViolation(self.base)
1852
def _gen_revision_history(self):
1853
"""Generate the revision history from last revision
1855
history = list(self.repository.iter_reverse_revision_history(
1856
self.last_revision()))
1860
def _write_revision_history(self, history):
1861
"""Factored out of set_revision_history.
1863
This performs the actual writing to disk, with format-specific checks.
1864
It is intended to be called by BzrBranch5.set_revision_history.
1866
if len(history) == 0:
1867
last_revision = 'null:'
1869
if history != self._lefthand_history(history[-1]):
1870
raise errors.NotLefthandHistory(history)
1871
last_revision = history[-1]
1872
if self._get_append_revisions_only():
1873
self._check_history_violation(last_revision)
1874
self._write_last_revision_info(len(history), last_revision)
1877
def append_revision(self, *revision_ids):
1878
revision_ids = [osutils.safe_revision_id(r) for r in revision_ids]
1879
if len(revision_ids) == 0:
1881
prev_revno, prev_revision = self.last_revision_info()
1882
for revision in self.repository.get_revisions(revision_ids):
1883
if prev_revision == _mod_revision.NULL_REVISION:
1884
if revision.parent_ids != []:
1885
raise errors.NotLeftParentDescendant(self, prev_revision,
1886
revision.revision_id)
1888
if revision.parent_ids[0] != prev_revision:
1889
raise errors.NotLeftParentDescendant(self, prev_revision,
1890
revision.revision_id)
1891
prev_revision = revision.revision_id
1892
self.set_last_revision_info(prev_revno + len(revision_ids),
1896
def _set_parent_location(self, url):
1897
"""Set the parent branch"""
1898
self._set_config_location('parent_location', url, make_relative=True)
1901
def _get_parent_location(self):
1902
"""Set the parent branch"""
1903
return self._get_config_location('parent_location')
1905
def set_push_location(self, location):
1906
"""See Branch.set_push_location."""
1907
self._set_config_location('push_location', location)
1909
def set_bound_location(self, location):
1910
"""See Branch.set_push_location."""
1912
config = self.get_config()
1913
if location is None:
1914
if config.get_user_option('bound') != 'True':
1917
config.set_user_option('bound', 'False')
1920
self._set_config_location('bound_location', location,
1922
config.set_user_option('bound', 'True')
1925
def _get_bound_location(self, bound):
1926
"""Return the bound location in the config file.
1928
Return None if the bound parameter does not match"""
1929
config = self.get_config()
1930
config_bound = (config.get_user_option('bound') == 'True')
1931
if config_bound != bound:
1933
return self._get_config_location('bound_location', config=config)
1935
def get_bound_location(self):
1936
"""See Branch.set_push_location."""
1937
return self._get_bound_location(True)
1939
def get_old_bound_location(self):
1940
"""See Branch.get_old_bound_location"""
1941
return self._get_bound_location(False)
1943
def set_append_revisions_only(self, enabled):
1948
self.get_config().set_user_option('append_revisions_only', value)
1950
def _get_append_revisions_only(self):
1951
value = self.get_config().get_user_option('append_revisions_only')
1952
return value == 'True'
1954
def _synchronize_history(self, destination, revision_id):
1955
"""Synchronize last revision and revision history between branches.
1957
This version is most efficient when the destination is also a
1958
BzrBranch6, but works for BzrBranch5, as long as the destination's
1959
repository contains all the lefthand ancestors of the intended
1960
last_revision. If not, set_last_revision_info will fail.
1962
:param destination: The branch to copy the history into
1963
:param revision_id: The revision-id to truncate history at. May
1964
be None to copy complete history.
1966
if revision_id is None:
1967
revno, revision_id = self.last_revision_info()
1969
revno = self.revision_id_to_revno(revision_id)
1970
destination.set_last_revision_info(revno, revision_id)
1972
def _make_tags(self):
1973
return BasicTags(self)
1976
class BranchTestProviderAdapter(object):
1977
"""A tool to generate a suite testing multiple branch formats at once.
1979
This is done by copying the test once for each transport and injecting
1980
the transport_server, transport_readonly_server, and branch_format
1981
classes into each copy. Each copy is also given a new id() to make it
1985
def __init__(self, transport_server, transport_readonly_server, formats):
1986
self._transport_server = transport_server
1987
self._transport_readonly_server = transport_readonly_server
1988
self._formats = formats
1990
def adapt(self, test):
1991
result = TestSuite()
1992
for branch_format, bzrdir_format in self._formats:
1993
new_test = deepcopy(test)
1994
new_test.transport_server = self._transport_server
1995
new_test.transport_readonly_server = self._transport_readonly_server
1996
new_test.bzrdir_format = bzrdir_format
1997
new_test.branch_format = branch_format
1998
def make_new_test_id():
1999
# the format can be either a class or an instance
2000
name = getattr(branch_format, '__name__',
2001
branch_format.__class__.__name__)
2002
new_id = "%s(%s)" % (new_test.id(), name)
2003
return lambda: new_id
2004
new_test.id = make_new_test_id()
2005
result.addTest(new_test)
2009
######################################################################
2010
# results of operations
2013
class _Result(object):
2015
def _show_tag_conficts(self, to_file):
2016
if not getattr(self, 'tag_conflicts', None):
2018
to_file.write('Conflicting tags:\n')
2019
for name, value1, value2 in self.tag_conflicts:
2020
to_file.write(' %s\n' % (name, ))
2023
class PullResult(_Result):
2024
"""Result of a Branch.pull operation.
2026
:ivar old_revno: Revision number before pull.
2027
:ivar new_revno: Revision number after pull.
2028
:ivar old_revid: Tip revision id before pull.
2029
:ivar new_revid: Tip revision id after pull.
2030
:ivar source_branch: Source (local) branch object.
2031
:ivar master_branch: Master branch of the target, or None.
2032
:ivar target_branch: Target/destination branch object.
2036
# DEPRECATED: pull used to return the change in revno
2037
return self.new_revno - self.old_revno
2039
def report(self, to_file):
2040
if self.old_revid == self.new_revid:
2041
to_file.write('No revisions to pull.\n')
2043
to_file.write('Now on revision %d.\n' % self.new_revno)
2044
self._show_tag_conficts(to_file)
2047
class PushResult(_Result):
2048
"""Result of a Branch.push operation.
2050
:ivar old_revno: Revision number before push.
2051
:ivar new_revno: Revision number after push.
2052
:ivar old_revid: Tip revision id before push.
2053
:ivar new_revid: Tip revision id after push.
2054
:ivar source_branch: Source branch object.
2055
:ivar master_branch: Master branch of the target, or None.
2056
:ivar target_branch: Target/destination branch object.
2060
# DEPRECATED: push used to return the change in revno
2061
return self.new_revno - self.old_revno
2063
def report(self, to_file):
2064
"""Write a human-readable description of the result."""
2065
if self.old_revid == self.new_revid:
2066
to_file.write('No new revisions to push.\n')
2068
to_file.write('Pushed up to revision %d.\n' % self.new_revno)
2069
self._show_tag_conficts(to_file)
2072
class BranchCheckResult(object):
2073
"""Results of checking branch consistency.
2078
def __init__(self, branch):
2079
self.branch = branch
2081
def report_results(self, verbose):
2082
"""Report the check results via trace.note.
2084
:param verbose: Requests more detailed display of what was checked,
2087
note('checked branch %s format %s',
2089
self.branch._format)
2092
class Converter5to6(object):
2093
"""Perform an in-place upgrade of format 5 to format 6"""
2095
def convert(self, branch):
2096
# Data for 5 and 6 can peacefully coexist.
2097
format = BzrBranchFormat6()
2098
new_branch = format.open(branch.bzrdir, _found=True)
2100
# Copy source data into target
2101
new_branch.set_last_revision_info(*branch.last_revision_info())
2102
new_branch.set_parent(branch.get_parent())
2103
new_branch.set_bound_location(branch.get_bound_location())
2104
new_branch.set_push_location(branch.get_push_location())
2106
# New branch has no tags by default
2107
new_branch.tags._set_tag_dict({})
2109
# Copying done; now update target format
2110
new_branch.control_files.put_utf8('format',
2111
format.get_format_string())
2113
# Clean up old files
2114
new_branch.control_files._transport.delete('revision-history')
2116
branch.set_parent(None)
2119
branch.set_bound_location(None)
added
removed
bzrlib/branch.py
