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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.symbol_versioning import (deprecated_function,
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zero_eight, zero_nine,
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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-NG branch, format 6\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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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 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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def get_root_id(self):
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"""Return the id of this branches root"""
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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 revision_history(self):
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"""Return sequence of revision hashes on to this branch."""
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raise NotImplementedError(self.revision_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 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_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, *args, **kwargs):
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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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# for API compatibility, until 0.8 releases we provide the old api:
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# def clone(self, to_location, revision=None, basis_branch=None, to_branch_format=None):
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# after 0.8 releases, the *args and **kwargs should be changed:
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# def clone(self, to_bzrdir, revision_id=None):
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if (kwargs.get('to_location', None) or
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kwargs.get('revision', None) or
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kwargs.get('basis_branch', None) or
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(len(args) and isinstance(args[0], basestring))):
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# backwards compatibility api:
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warn("Branch.clone() has been deprecated for BzrDir.clone() from"
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" bzrlib 0.8.", DeprecationWarning, stacklevel=3)
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basis_branch = args[2]
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basis_branch = kwargs.get('basis_branch', None)
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basis = basis_branch.bzrdir
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revision_id = args[1]
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revision_id = kwargs.get('revision', None)
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# no default to raise if not provided.
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url = kwargs.get('to_location')
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return self.bzrdir.clone(url,
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revision_id=revision_id,
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basis=basis).open_branch()
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# generate args by hand
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revision_id = args[1]
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revision_id = kwargs.get('revision_id', None)
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# no default to raise if not provided.
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to_bzrdir = kwargs.get('to_bzrdir')
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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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"""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.cloning_metadir()
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format.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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checkout = bzrdir.BzrDirMetaFormat1().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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return checkout.create_workingtree(revision_id)
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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)
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def _initialize_helper(self, a_bzrdir, utf8_files, lock_type='metadir',
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"""Initialize a branch in a bzrdir, with specified files
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:param a_bzrdir: The bzrdir to initialize the branch in
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:param utf8_files: The files to create as a list of
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(filename, content) tuples
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:param set_format: If True, set the format with
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self.get_format_string. (BzrBranch4 has its format set
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:return: a branch in this format
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mutter('creating branch %r in %s', self, a_bzrdir.transport.base)
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branch_transport = a_bzrdir.get_branch_transport(self)
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'metadir': ('lock', lockdir.LockDir),
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'branch4': ('branch-lock', lockable_files.TransportLock),
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lock_name, lock_class = lock_map[lock_type]
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control_files = lockable_files.LockableFiles(branch_transport,
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lock_name, lock_class)
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control_files.create_lock()
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control_files.lock_write()
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control_files.put_utf8('format', self.get_format_string())
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for file, content in utf8_files:
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control_files.put_utf8(file, content)
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control_files.unlock()
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return self.open(a_bzrdir, _found=True)
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def initialize(self, a_bzrdir):
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"""Create a branch of this format in a_bzrdir."""
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raise NotImplementedError(self.initialize)
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def is_supported(self):
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"""Is this format supported?
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Supported formats can be initialized and opened.
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Unsupported formats may not support initialization or committing or
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some other features depending on the reason for not being supported.
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def open(self, a_bzrdir, _found=False):
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"""Return the branch object for a_bzrdir
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_found is a private parameter, do not use it. It is used to indicate
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if format probing has already be done.
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raise NotImplementedError(self.open)
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def register_format(klass, format):
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klass._formats[format.get_format_string()] = format
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def set_default_format(klass, format):
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klass._default_format = format
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def unregister_format(klass, format):
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assert klass._formats[format.get_format_string()] is format
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del klass._formats[format.get_format_string()]
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return self.get_format_string().rstrip()
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def supports_tags(self):
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"""True if this format supports tags stored in the branch"""
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return False # by default
816
# XXX: Probably doesn't really belong here -- mbp 20070212
817
def _initialize_control_files(self, a_bzrdir, utf8_files, lock_filename,
819
branch_transport = a_bzrdir.get_branch_transport(self)
820
control_files = lockable_files.LockableFiles(branch_transport,
821
lock_filename, lock_class)
822
control_files.create_lock()
823
control_files.lock_write()
825
for filename, content in utf8_files:
826
control_files.put_utf8(filename, content)
828
control_files.unlock()
831
class BranchHooks(dict):
832
"""A dictionary mapping hook name to a list of callables for branch hooks.
834
e.g. ['set_rh'] Is the list of items to be called when the
835
set_revision_history function is invoked.
839
"""Create the default hooks.
841
These are all empty initially, because by default nothing should get
845
# Introduced in 0.15:
846
# invoked whenever the revision history has been set
847
# with set_revision_history. The api signature is
848
# (branch, revision_history), and the branch will
851
# invoked after a push operation completes.
852
# the api signature is
854
# containing the members
855
# (source, local, master, old_revno, old_revid, new_revno, new_revid)
856
# where local is the local branch or None, master is the target
857
# master branch, and the rest should be self explanatory. The source
858
# is read locked and the target branches write locked. Source will
859
# be the local low-latency branch.
860
self['post_push'] = []
861
# invoked after a pull operation completes.
862
# the api signature is
864
# containing the members
865
# (source, local, master, old_revno, old_revid, new_revno, new_revid)
866
# where local is the local branch or None, master is the target
867
# master branch, and the rest should be self explanatory. The source
868
# is read locked and the target branches write locked. The local
869
# branch is the low-latency branch.
870
self['post_pull'] = []
871
# invoked after a commit operation completes.
872
# the api signature is
873
# (local, master, old_revno, old_revid, new_revno, new_revid)
874
# old_revid is NULL_REVISION for the first commit to a branch.
875
self['post_commit'] = []
876
# invoked after a uncommit operation completes.
877
# the api signature is
878
# (local, master, old_revno, old_revid, new_revno, new_revid) where
879
# local is the local branch or None, master is the target branch,
880
# and an empty branch recieves new_revno of 0, new_revid of None.
881
self['post_uncommit'] = []
883
def install_hook(self, hook_name, a_callable):
884
"""Install a_callable in to the hook hook_name.
886
:param hook_name: A hook name. See the __init__ method of BranchHooks
887
for the complete list of hooks.
888
:param a_callable: The callable to be invoked when the hook triggers.
889
The exact signature will depend on the hook - see the __init__
890
method of BranchHooks for details on each hook.
893
self[hook_name].append(a_callable)
895
raise errors.UnknownHook('branch', hook_name)
898
# install the default hooks into the Branch class.
899
Branch.hooks = BranchHooks()
902
class BzrBranchFormat4(BranchFormat):
903
"""Bzr branch format 4.
906
- a revision-history file.
907
- a branch-lock lock file [ to be shared with the bzrdir ]
910
def get_format_description(self):
911
"""See BranchFormat.get_format_description()."""
912
return "Branch format 4"
914
def initialize(self, a_bzrdir):
915
"""Create a branch of this format in a_bzrdir."""
916
utf8_files = [('revision-history', ''),
919
return self._initialize_helper(a_bzrdir, utf8_files,
920
lock_type='branch4', set_format=False)
923
super(BzrBranchFormat4, self).__init__()
924
self._matchingbzrdir = bzrdir.BzrDirFormat6()
926
def open(self, a_bzrdir, _found=False):
927
"""Return the branch object for a_bzrdir
929
_found is a private parameter, do not use it. It is used to indicate
930
if format probing has already be done.
933
# we are being called directly and must probe.
934
raise NotImplementedError
935
return BzrBranch(_format=self,
936
_control_files=a_bzrdir._control_files,
938
_repository=a_bzrdir.open_repository())
941
return "Bazaar-NG branch format 4"
944
class BzrBranchFormat5(BranchFormat):
945
"""Bzr branch format 5.
948
- a revision-history file.
950
- a lock dir guarding the branch itself
951
- all of this stored in a branch/ subdirectory
952
- works with shared repositories.
954
This format is new in bzr 0.8.
957
def get_format_string(self):
958
"""See BranchFormat.get_format_string()."""
959
return "Bazaar-NG branch format 5\n"
961
def get_format_description(self):
962
"""See BranchFormat.get_format_description()."""
963
return "Branch format 5"
965
def initialize(self, a_bzrdir):
966
"""Create a branch of this format in a_bzrdir."""
967
utf8_files = [('revision-history', ''),
970
return self._initialize_helper(a_bzrdir, utf8_files)
973
super(BzrBranchFormat5, self).__init__()
974
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
976
def open(self, a_bzrdir, _found=False):
977
"""Return the branch object for a_bzrdir
979
_found is a private parameter, do not use it. It is used to indicate
980
if format probing has already be done.
983
format = BranchFormat.find_format(a_bzrdir)
984
assert format.__class__ == self.__class__
985
transport = a_bzrdir.get_branch_transport(None)
986
control_files = lockable_files.LockableFiles(transport, 'lock',
988
return BzrBranch5(_format=self,
989
_control_files=control_files,
991
_repository=a_bzrdir.find_repository())
994
class BzrBranchFormat6(BzrBranchFormat5):
995
"""Branch format with last-revision
997
Unlike previous formats, this has no explicit revision history. Instead,
998
this just stores the last-revision, and the left-hand history leading
999
up to there is the history.
1001
This format was introduced in bzr 0.15
1004
def get_format_string(self):
1005
"""See BranchFormat.get_format_string()."""
1006
return "Bazaar-NG branch format 6\n"
1008
def get_format_description(self):
1009
"""See BranchFormat.get_format_description()."""
1010
return "Branch format 6"
1012
def initialize(self, a_bzrdir):
1013
"""Create a branch of this format in a_bzrdir."""
1014
utf8_files = [('last-revision', '0 null:\n'),
1015
('branch-name', ''),
1016
('branch.conf', ''),
1019
return self._initialize_helper(a_bzrdir, utf8_files)
1021
def open(self, a_bzrdir, _found=False):
1022
"""Return the branch object for a_bzrdir
1024
_found is a private parameter, do not use it. It is used to indicate
1025
if format probing has already be done.
1028
format = BranchFormat.find_format(a_bzrdir)
1029
assert format.__class__ == self.__class__
1030
transport = a_bzrdir.get_branch_transport(None)
1031
control_files = lockable_files.LockableFiles(transport, 'lock',
1033
return BzrBranch6(_format=self,
1034
_control_files=control_files,
1036
_repository=a_bzrdir.find_repository())
1038
def supports_tags(self):
1042
class BranchReferenceFormat(BranchFormat):
1043
"""Bzr branch reference format.
1045
Branch references are used in implementing checkouts, they
1046
act as an alias to the real branch which is at some other url.
1053
def get_format_string(self):
1054
"""See BranchFormat.get_format_string()."""
1055
return "Bazaar-NG Branch Reference Format 1\n"
1057
def get_format_description(self):
1058
"""See BranchFormat.get_format_description()."""
1059
return "Checkout reference format 1"
1061
def initialize(self, a_bzrdir, target_branch=None):
1062
"""Create a branch of this format in a_bzrdir."""
1063
if target_branch is None:
1064
# this format does not implement branch itself, thus the implicit
1065
# creation contract must see it as uninitializable
1066
raise errors.UninitializableFormat(self)
1067
mutter('creating branch reference in %s', a_bzrdir.transport.base)
1068
branch_transport = a_bzrdir.get_branch_transport(self)
1069
branch_transport.put_bytes('location',
1070
target_branch.bzrdir.root_transport.base)
1071
branch_transport.put_bytes('format', self.get_format_string())
1072
return self.open(a_bzrdir, _found=True)
1075
super(BranchReferenceFormat, self).__init__()
1076
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
1078
def _make_reference_clone_function(format, a_branch):
1079
"""Create a clone() routine for a branch dynamically."""
1080
def clone(to_bzrdir, revision_id=None):
1081
"""See Branch.clone()."""
1082
return format.initialize(to_bzrdir, a_branch)
1083
# cannot obey revision_id limits when cloning a reference ...
1084
# FIXME RBC 20060210 either nuke revision_id for clone, or
1085
# emit some sort of warning/error to the caller ?!
1088
def open(self, a_bzrdir, _found=False):
1089
"""Return the branch that the branch reference in a_bzrdir points at.
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
real_bzrdir = bzrdir.BzrDir.open(transport.get('location').read())
1099
result = real_bzrdir.open_branch()
1100
# this changes the behaviour of result.clone to create a new reference
1101
# rather than a copy of the content of the branch.
1102
# I did not use a proxy object because that needs much more extensive
1103
# testing, and we are only changing one behaviour at the moment.
1104
# If we decide to alter more behaviours - i.e. the implicit nickname
1105
# then this should be refactored to introduce a tested proxy branch
1106
# and a subclass of that for use in overriding clone() and ....
1108
result.clone = self._make_reference_clone_function(result)
1112
# formats which have no format string are not discoverable
1113
# and not independently creatable, so are not registered.
1114
__default_format = BzrBranchFormat5()
1115
BranchFormat.register_format(__default_format)
1116
BranchFormat.register_format(BranchReferenceFormat())
1117
BranchFormat.register_format(BzrBranchFormat6())
1118
BranchFormat.set_default_format(__default_format)
1119
_legacy_formats = [BzrBranchFormat4(),
1122
class BzrBranch(Branch):
1123
"""A branch stored in the actual filesystem.
1125
Note that it's "local" in the context of the filesystem; it doesn't
1126
really matter if it's on an nfs/smb/afs/coda/... share, as long as
1127
it's writable, and can be accessed via the normal filesystem API.
1130
def __init__(self, transport=DEPRECATED_PARAMETER, init=DEPRECATED_PARAMETER,
1131
relax_version_check=DEPRECATED_PARAMETER, _format=None,
1132
_control_files=None, a_bzrdir=None, _repository=None):
1133
"""Create new branch object at a particular location.
1135
transport -- A Transport object, defining how to access files.
1137
init -- If True, create new control files in a previously
1138
unversioned directory. If False, the branch must already
1141
relax_version_check -- If true, the usual check for the branch
1142
version is not applied. This is intended only for
1143
upgrade/recovery type use; it's not guaranteed that
1144
all operations will work on old format branches.
1146
Branch.__init__(self)
1147
if a_bzrdir is None:
1148
self.bzrdir = bzrdir.BzrDir.open(transport.base)
1150
self.bzrdir = a_bzrdir
1151
# self._transport used to point to the directory containing the
1152
# control directory, but was not used - now it's just the transport
1153
# for the branch control files. mbp 20070212
1154
self._base = self.bzrdir.transport.clone('..').base
1155
self._format = _format
1156
if _control_files is None:
1157
raise ValueError('BzrBranch _control_files is None')
1158
self.control_files = _control_files
1159
self._transport = _control_files._transport
1160
if deprecated_passed(init):
1161
warn("BzrBranch.__init__(..., init=XXX): The init parameter is "
1162
"deprecated as of bzr 0.8. Please use Branch.create().",
1166
# this is slower than before deprecation, oh well never mind.
1167
# -> its deprecated.
1168
self._initialize(transport.base)
1169
self._check_format(_format)
1170
if deprecated_passed(relax_version_check):
1171
warn("BzrBranch.__init__(..., relax_version_check=XXX_: The "
1172
"relax_version_check parameter is deprecated as of bzr 0.8. "
1173
"Please use BzrDir.open_downlevel, or a BzrBranchFormat's "
1177
if (not relax_version_check
1178
and not self._format.is_supported()):
1179
raise errors.UnsupportedFormatError(format=fmt)
1180
if deprecated_passed(transport):
1181
warn("BzrBranch.__init__(transport=XXX...): The transport "
1182
"parameter is deprecated as of bzr 0.8. "
1183
"Please use Branch.open, or bzrdir.open_branch().",
1186
self.repository = _repository
1189
return '%s(%r)' % (self.__class__.__name__, self.base)
1193
def _get_base(self):
1194
"""Returns the directory containing the control directory."""
1197
base = property(_get_base, doc="The URL for the root of this branch.")
1199
def _finish_transaction(self):
1200
"""Exit the current transaction."""
1201
return self.control_files._finish_transaction()
1203
def get_transaction(self):
1204
"""Return the current active transaction.
1206
If no transaction is active, this returns a passthrough object
1207
for which all data is immediately flushed and no caching happens.
1209
# this is an explicit function so that we can do tricky stuff
1210
# when the storage in rev_storage is elsewhere.
1211
# we probably need to hook the two 'lock a location' and
1212
# 'have a transaction' together more delicately, so that
1213
# we can have two locks (branch and storage) and one transaction
1214
# ... and finishing the transaction unlocks both, but unlocking
1215
# does not. - RBC 20051121
1216
return self.control_files.get_transaction()
1218
def _set_transaction(self, transaction):
1219
"""Set a new active transaction."""
1220
return self.control_files._set_transaction(transaction)
1222
def abspath(self, name):
1223
"""See Branch.abspath."""
1224
return self.control_files._transport.abspath(name)
1226
def _check_format(self, format):
1227
"""Identify the branch format if needed.
1229
The format is stored as a reference to the format object in
1230
self._format for code that needs to check it later.
1232
The format parameter is either None or the branch format class
1233
used to open this branch.
1235
FIXME: DELETE THIS METHOD when pre 0.8 support is removed.
1238
format = BranchFormat.find_format(self.bzrdir)
1239
self._format = format
1240
mutter("got branch format %s", self._format)
1243
def get_root_id(self):
1244
"""See Branch.get_root_id."""
1245
tree = self.repository.revision_tree(self.last_revision())
1246
return tree.inventory.root.file_id
1248
def is_locked(self):
1249
return self.control_files.is_locked()
1251
def lock_write(self):
1252
self.repository.lock_write()
1254
self.control_files.lock_write()
1256
self.repository.unlock()
1259
def lock_read(self):
1260
self.repository.lock_read()
1262
self.control_files.lock_read()
1264
self.repository.unlock()
1268
# TODO: test for failed two phase locks. This is known broken.
1270
self.control_files.unlock()
1272
self.repository.unlock()
1274
def peek_lock_mode(self):
1275
if self.control_files._lock_count == 0:
1278
return self.control_files._lock_mode
1280
def get_physical_lock_status(self):
1281
return self.control_files.get_physical_lock_status()
1284
def print_file(self, file, revision_id):
1285
"""See Branch.print_file."""
1286
return self.repository.print_file(file, revision_id)
1289
def append_revision(self, *revision_ids):
1290
"""See Branch.append_revision."""
1291
revision_ids = [osutils.safe_revision_id(r) for r in revision_ids]
1292
for revision_id in revision_ids:
1293
_mod_revision.check_not_reserved_id(revision_id)
1294
mutter("add {%s} to revision-history" % revision_id)
1295
rev_history = self.revision_history()
1296
rev_history.extend(revision_ids)
1297
self.set_revision_history(rev_history)
1299
def _write_revision_history(self, history):
1300
"""Factored out of set_revision_history.
1302
This performs the actual writing to disk.
1303
It is intended to be called by BzrBranch5.set_revision_history."""
1304
self.control_files.put_bytes(
1305
'revision-history', '\n'.join(history))
1308
def set_revision_history(self, rev_history):
1309
"""See Branch.set_revision_history."""
1310
rev_history = [osutils.safe_revision_id(r) for r in rev_history]
1311
self._write_revision_history(rev_history)
1312
transaction = self.get_transaction()
1313
history = transaction.map.find_revision_history()
1314
if history is not None:
1315
# update the revision history in the identity map.
1316
history[:] = list(rev_history)
1317
# this call is disabled because revision_history is
1318
# not really an object yet, and the transaction is for objects.
1319
# transaction.register_dirty(history)
1321
transaction.map.add_revision_history(rev_history)
1322
# this call is disabled because revision_history is
1323
# not really an object yet, and the transaction is for objects.
1324
# transaction.register_clean(history)
1325
for hook in Branch.hooks['set_rh']:
1326
hook(self, rev_history)
1329
def set_last_revision_info(self, revno, revision_id):
1330
revision_id = osutils.safe_revision_id(revision_id)
1331
history = self._lefthand_history(revision_id)
1332
assert len(history) == revno, '%d != %d' % (len(history), revno)
1333
self.set_revision_history(history)
1335
def _gen_revision_history(self):
1336
get_cached_utf8 = cache_utf8.get_cached_utf8
1337
history = [get_cached_utf8(l.rstrip('\r\n')) for l in
1338
self.control_files.get('revision-history').readlines()]
1342
def revision_history(self):
1343
"""See Branch.revision_history."""
1344
transaction = self.get_transaction()
1345
history = transaction.map.find_revision_history()
1346
if history is not None:
1347
# mutter("cache hit for revision-history in %s", self)
1348
return list(history)
1349
history = self._gen_revision_history()
1350
transaction.map.add_revision_history(history)
1351
# this call is disabled because revision_history is
1352
# not really an object yet, and the transaction is for objects.
1353
# transaction.register_clean(history, precious=True)
1354
return list(history)
1356
def _lefthand_history(self, revision_id, last_rev=None,
1358
# stop_revision must be a descendant of last_revision
1359
stop_graph = self.repository.get_revision_graph(revision_id)
1360
if last_rev is not None and last_rev not in stop_graph:
1361
# our previous tip is not merged into stop_revision
1362
raise errors.DivergedBranches(self, other_branch)
1363
# make a new revision history from the graph
1364
current_rev_id = revision_id
1366
while current_rev_id not in (None, _mod_revision.NULL_REVISION):
1367
new_history.append(current_rev_id)
1368
current_rev_id_parents = stop_graph[current_rev_id]
1370
current_rev_id = current_rev_id_parents[0]
1372
current_rev_id = None
1373
new_history.reverse()
1377
def generate_revision_history(self, revision_id, last_rev=None,
1379
"""Create a new revision history that will finish with revision_id.
1381
:param revision_id: the new tip to use.
1382
:param last_rev: The previous last_revision. If not None, then this
1383
must be a ancestory of revision_id, or DivergedBranches is raised.
1384
:param other_branch: The other branch that DivergedBranches should
1385
raise with respect to.
1387
revision_id = osutils.safe_revision_id(revision_id)
1388
self.set_revision_history(self._lefthand_history(revision_id,
1389
last_rev, other_branch))
1392
def update_revisions(self, other, stop_revision=None):
1393
"""See Branch.update_revisions."""
1396
if stop_revision is None:
1397
stop_revision = other.last_revision()
1398
if stop_revision is None:
1399
# if there are no commits, we're done.
1402
stop_revision = osutils.safe_revision_id(stop_revision)
1403
# whats the current last revision, before we fetch [and change it
1405
last_rev = self.last_revision()
1406
# we fetch here regardless of whether we need to so that we pickup
1408
self.fetch(other, stop_revision)
1409
my_ancestry = self.repository.get_ancestry(last_rev)
1410
if stop_revision in my_ancestry:
1411
# last_revision is a descendant of stop_revision
1413
self.generate_revision_history(stop_revision, last_rev=last_rev,
1418
def basis_tree(self):
1419
"""See Branch.basis_tree."""
1420
return self.repository.revision_tree(self.last_revision())
1422
@deprecated_method(zero_eight)
1423
def working_tree(self):
1424
"""Create a Working tree object for this branch."""
1426
from bzrlib.transport.local import LocalTransport
1427
if (self.base.find('://') != -1 or
1428
not isinstance(self._transport, LocalTransport)):
1429
raise NoWorkingTree(self.base)
1430
return self.bzrdir.open_workingtree()
1433
def pull(self, source, overwrite=False, stop_revision=None,
1434
_hook_master=None, _run_hooks=True):
1437
:param _hook_master: Private parameter - set the branch to
1438
be supplied as the master to push hooks.
1439
:param _run_hooks: Private parameter - allow disabling of
1440
hooks, used when pushing to a master branch.
1442
result = PullResult()
1443
result.source_branch = source
1444
result.target_branch = self
1447
result.old_revno, result.old_revid = self.last_revision_info()
1449
self.update_revisions(source, stop_revision)
1450
except DivergedBranches:
1454
if stop_revision is None:
1455
stop_revision = source.last_revision()
1456
self.generate_revision_history(stop_revision)
1457
result.tag_conflicts = source.tags.merge_to(self.tags)
1458
result.new_revno, result.new_revid = self.last_revision_info()
1460
result.master_branch = _hook_master
1461
result.local_branch = self
1463
result.master_branch = self
1464
result.local_branch = None
1466
for hook in Branch.hooks['post_pull']:
1472
def _get_parent_location(self):
1473
_locs = ['parent', 'pull', 'x-pull']
1476
return self.control_files.get(l).read().strip('\n')
1482
def push(self, target, overwrite=False, stop_revision=None,
1483
_hook_master=None, _run_hooks=True):
1486
:param _hook_master: Private parameter - set the branch to
1487
be supplied as the master to push hooks.
1488
:param _run_hooks: Private parameter - allow disabling of
1489
hooks, used when pushing to a master branch.
1491
result = PushResult()
1492
result.source_branch = self
1493
result.target_branch = target
1496
result.old_revno, result.old_revid = target.last_revision_info()
1498
target.update_revisions(self, stop_revision)
1499
except DivergedBranches:
1503
target.set_revision_history(self.revision_history())
1504
result.tag_conflicts = self.tags.merge_to(target.tags)
1505
result.new_revno, result.new_revid = target.last_revision_info()
1507
result.master_branch = _hook_master
1508
result.local_branch = target
1510
result.master_branch = target
1511
result.local_branch = None
1513
for hook in Branch.hooks['post_push']:
1519
def get_parent(self):
1520
"""See Branch.get_parent."""
1522
assert self.base[-1] == '/'
1523
parent = self._get_parent_location()
1526
# This is an old-format absolute path to a local branch
1527
# turn it into a url
1528
if parent.startswith('/'):
1529
parent = urlutils.local_path_to_url(parent.decode('utf8'))
1531
return urlutils.join(self.base[:-1], parent)
1532
except errors.InvalidURLJoin, e:
1533
raise errors.InaccessibleParent(parent, self.base)
1535
def get_push_location(self):
1536
"""See Branch.get_push_location."""
1537
push_loc = self.get_config().get_user_option('push_location')
1540
def set_push_location(self, location):
1541
"""See Branch.set_push_location."""
1542
self.get_config().set_user_option(
1543
'push_location', location,
1544
store=_mod_config.STORE_LOCATION_NORECURSE)
1547
def set_parent(self, url):
1548
"""See Branch.set_parent."""
1549
# TODO: Maybe delete old location files?
1550
# URLs should never be unicode, even on the local fs,
1551
# FIXUP this and get_parent in a future branch format bump:
1552
# read and rewrite the file, and have the new format code read
1553
# using .get not .get_utf8. RBC 20060125
1555
if isinstance(url, unicode):
1557
url = url.encode('ascii')
1558
except UnicodeEncodeError:
1559
raise bzrlib.errors.InvalidURL(url,
1560
"Urls must be 7-bit ascii, "
1561
"use bzrlib.urlutils.escape")
1562
url = urlutils.relative_url(self.base, url)
1563
self._set_parent_location(url)
1565
def _set_parent_location(self, url):
1567
self.control_files._transport.delete('parent')
1569
assert isinstance(url, str)
1570
self.control_files.put_bytes('parent', url + '\n')
1572
@deprecated_function(zero_nine)
1573
def tree_config(self):
1574
"""DEPRECATED; call get_config instead.
1575
TreeConfig has become part of BranchConfig."""
1576
return TreeConfig(self)
1579
class BzrBranch5(BzrBranch):
1580
"""A format 5 branch. This supports new features over plan branches.
1582
It has support for a master_branch which is the data for bound branches.
1590
super(BzrBranch5, self).__init__(_format=_format,
1591
_control_files=_control_files,
1593
_repository=_repository)
1596
def pull(self, source, overwrite=False, stop_revision=None,
1598
"""Extends branch.pull to be bound branch aware.
1600
:param _run_hooks: Private parameter used to force hook running
1601
off during bound branch double-pushing.
1603
bound_location = self.get_bound_location()
1604
master_branch = None
1605
if bound_location and source.base != bound_location:
1606
# not pulling from master, so we need to update master.
1607
master_branch = self.get_master_branch()
1608
master_branch.lock_write()
1611
# pull from source into master.
1612
master_branch.pull(source, overwrite, stop_revision,
1614
return super(BzrBranch5, self).pull(source, overwrite,
1615
stop_revision, _hook_master=master_branch,
1616
_run_hooks=_run_hooks)
1619
master_branch.unlock()
1622
def push(self, target, overwrite=False, stop_revision=None):
1623
"""Updates branch.push to be bound branch aware."""
1624
bound_location = target.get_bound_location()
1625
master_branch = None
1626
if bound_location and target.base != bound_location:
1627
# not pushing to master, so we need to update master.
1628
master_branch = target.get_master_branch()
1629
master_branch.lock_write()
1632
# push into the master from this branch.
1633
super(BzrBranch5, self).push(master_branch, overwrite,
1634
stop_revision, _run_hooks=False)
1635
# and push into the target branch from this. Note that we push from
1636
# this branch again, because its considered the highest bandwidth
1638
return super(BzrBranch5, self).push(target, overwrite,
1639
stop_revision, _hook_master=master_branch)
1642
master_branch.unlock()
1644
def get_bound_location(self):
1646
return self.control_files.get_utf8('bound').read()[:-1]
1647
except errors.NoSuchFile:
1651
def get_master_branch(self):
1652
"""Return the branch we are bound to.
1654
:return: Either a Branch, or None
1656
This could memoise the branch, but if thats done
1657
it must be revalidated on each new lock.
1658
So for now we just don't memoise it.
1659
# RBC 20060304 review this decision.
1661
bound_loc = self.get_bound_location()
1665
return Branch.open(bound_loc)
1666
except (errors.NotBranchError, errors.ConnectionError), e:
1667
raise errors.BoundBranchConnectionFailure(
1671
def set_bound_location(self, location):
1672
"""Set the target where this branch is bound to.
1674
:param location: URL to the target branch
1677
self.control_files.put_utf8('bound', location+'\n')
1680
self.control_files._transport.delete('bound')
1686
def bind(self, other):
1687
"""Bind this branch to the branch other.
1689
This does not push or pull data between the branches, though it does
1690
check for divergence to raise an error when the branches are not
1691
either the same, or one a prefix of the other. That behaviour may not
1692
be useful, so that check may be removed in future.
1694
:param other: The branch to bind to
1697
# TODO: jam 20051230 Consider checking if the target is bound
1698
# It is debatable whether you should be able to bind to
1699
# a branch which is itself bound.
1700
# Committing is obviously forbidden,
1701
# but binding itself may not be.
1702
# Since we *have* to check at commit time, we don't
1703
# *need* to check here
1705
# we want to raise diverged if:
1706
# last_rev is not in the other_last_rev history, AND
1707
# other_last_rev is not in our history, and do it without pulling
1709
last_rev = self.last_revision()
1710
if last_rev is not None:
1713
other_last_rev = other.last_revision()
1714
if other_last_rev is not None:
1715
# neither branch is new, we have to do some work to
1716
# ascertain diversion.
1717
remote_graph = other.repository.get_revision_graph(
1719
local_graph = self.repository.get_revision_graph(last_rev)
1720
if (last_rev not in remote_graph and
1721
other_last_rev not in local_graph):
1722
raise errors.DivergedBranches(self, other)
1725
self.set_bound_location(other.base)
1729
"""If bound, unbind"""
1730
return self.set_bound_location(None)
1734
"""Synchronise this branch with the master branch if any.
1736
:return: None or the last_revision that was pivoted out during the
1739
master = self.get_master_branch()
1740
if master is not None:
1741
old_tip = self.last_revision()
1742
self.pull(master, overwrite=True)
1743
if old_tip in self.repository.get_ancestry(self.last_revision()):
1749
class BzrBranchExperimental(BzrBranch5):
1750
"""Bzr experimental branch format
1753
- a revision-history file.
1755
- a lock dir guarding the branch itself
1756
- all of this stored in a branch/ subdirectory
1757
- works with shared repositories.
1758
- a tag dictionary in the branch
1760
This format is new in bzr 0.15, but shouldn't be used for real data,
1763
This class acts as it's own BranchFormat.
1766
_matchingbzrdir = bzrdir.BzrDirMetaFormat1()
1769
def get_format_string(cls):
1770
"""See BranchFormat.get_format_string()."""
1771
return "Bazaar-NG branch format experimental\n"
1774
def get_format_description(cls):
1775
"""See BranchFormat.get_format_description()."""
1776
return "Experimental branch format"
1779
def _initialize_control_files(cls, a_bzrdir, utf8_files, lock_filename,
1781
branch_transport = a_bzrdir.get_branch_transport(cls)
1782
control_files = lockable_files.LockableFiles(branch_transport,
1783
lock_filename, lock_class)
1784
control_files.create_lock()
1785
control_files.lock_write()
1787
for filename, content in utf8_files:
1788
control_files.put_utf8(filename, content)
1790
control_files.unlock()
1793
def initialize(cls, a_bzrdir):
1794
"""Create a branch of this format in a_bzrdir."""
1795
utf8_files = [('format', cls.get_format_string()),
1796
('revision-history', ''),
1797
('branch-name', ''),
1800
cls._initialize_control_files(a_bzrdir, utf8_files,
1801
'lock', lockdir.LockDir)
1802
return cls.open(a_bzrdir, _found=True)
1805
def open(cls, a_bzrdir, _found=False):
1806
"""Return the branch object for a_bzrdir
1808
_found is a private parameter, do not use it. It is used to indicate
1809
if format probing has already be done.
1812
format = BranchFormat.find_format(a_bzrdir)
1813
assert format.__class__ == cls
1814
transport = a_bzrdir.get_branch_transport(None)
1815
control_files = lockable_files.LockableFiles(transport, 'lock',
1817
return cls(_format=cls,
1818
_control_files=control_files,
1820
_repository=a_bzrdir.find_repository())
1823
def is_supported(cls):
1826
def _make_tags(self):
1827
return BasicTags(self)
1830
def supports_tags(cls):
1834
BranchFormat.register_format(BzrBranchExperimental)
1837
class BzrBranch6(BzrBranch5):
1840
def last_revision_info(self):
1841
revision_string = self.control_files.get('last-revision').read()
1842
revno, revision_id = revision_string.rstrip('\n').split(' ', 1)
1843
revision_id = cache_utf8.get_cached_utf8(revision_id)
1845
return revno, revision_id
1847
def last_revision(self):
1848
"""Return last revision id, or None"""
1849
revision_id = self.last_revision_info()[1]
1850
if revision_id == _mod_revision.NULL_REVISION:
1854
def _write_last_revision_info(self, revno, revision_id):
1855
"""Simply write out the revision id, with no checks.
1857
Use set_last_revision_info to perform this safely.
1859
Does not update the revision_history cache.
1860
Intended to be called by set_last_revision_info and
1861
_write_revision_history.
1863
if revision_id is None:
1864
revision_id = 'null:'
1865
out_string = '%d %s\n' % (revno, revision_id)
1866
self.control_files.put_bytes('last-revision', out_string)
1869
def set_last_revision_info(self, revno, revision_id):
1870
revision_id = osutils.safe_revision_id(revision_id)
1871
if self._get_append_revisions_only():
1872
self._check_history_violation(revision_id)
1873
self._write_last_revision_info(revno, revision_id)
1874
transaction = self.get_transaction()
1875
cached_history = transaction.map.find_revision_history()
1876
if cached_history is not None:
1877
transaction.map.remove_object(cached_history)
1879
def _check_history_violation(self, revision_id):
1880
last_revision = self.last_revision()
1881
if last_revision is None:
1883
if last_revision not in self._lefthand_history(revision_id):
1884
raise errors.AppendRevisionsOnlyViolation(self.base)
1886
def _gen_revision_history(self):
1887
"""Generate the revision history from last revision
1889
history = list(self.repository.iter_reverse_revision_history(
1890
self.last_revision()))
1894
def _write_revision_history(self, history):
1895
"""Factored out of set_revision_history.
1897
This performs the actual writing to disk, with format-specific checks.
1898
It is intended to be called by BzrBranch5.set_revision_history.
1900
if len(history) == 0:
1901
last_revision = 'null:'
1903
if history != self._lefthand_history(history[-1]):
1904
raise errors.NotLefthandHistory(history)
1905
last_revision = history[-1]
1906
if self._get_append_revisions_only():
1907
self._check_history_violation(last_revision)
1908
self._write_last_revision_info(len(history), last_revision)
1911
def append_revision(self, *revision_ids):
1912
revision_ids = [osutils.safe_revision_id(r) for r in revision_ids]
1913
if len(revision_ids) == 0:
1915
prev_revno, prev_revision = self.last_revision_info()
1916
for revision in self.repository.get_revisions(revision_ids):
1917
if prev_revision == _mod_revision.NULL_REVISION:
1918
if revision.parent_ids != []:
1919
raise errors.NotLeftParentDescendant(self, prev_revision,
1920
revision.revision_id)
1922
if revision.parent_ids[0] != prev_revision:
1923
raise errors.NotLeftParentDescendant(self, prev_revision,
1924
revision.revision_id)
1925
prev_revision = revision.revision_id
1926
self.set_last_revision_info(prev_revno + len(revision_ids),
1929
def _set_config_location(self, name, url, config=None,
1930
make_relative=False):
1932
config = self.get_config()
1936
url = urlutils.relative_url(self.base, url)
1937
config.set_user_option(name, url)
1940
def _get_config_location(self, name, config=None):
1942
config = self.get_config()
1943
location = config.get_user_option(name)
1949
def _set_parent_location(self, url):
1950
"""Set the parent branch"""
1951
self._set_config_location('parent_location', url, make_relative=True)
1954
def _get_parent_location(self):
1955
"""Set the parent branch"""
1956
return self._get_config_location('parent_location')
1958
def set_push_location(self, location):
1959
"""See Branch.set_push_location."""
1960
self._set_config_location('push_location', location)
1962
def set_bound_location(self, location):
1963
"""See Branch.set_push_location."""
1965
config = self.get_config()
1966
if location is None:
1967
if config.get_user_option('bound') != 'True':
1970
config.set_user_option('bound', 'False')
1973
self._set_config_location('bound_location', location,
1975
config.set_user_option('bound', 'True')
1978
def _get_bound_location(self, bound):
1979
"""Return the bound location in the config file.
1981
Return None if the bound parameter does not match"""
1982
config = self.get_config()
1983
config_bound = (config.get_user_option('bound') == 'True')
1984
if config_bound != bound:
1986
return self._get_config_location('bound_location', config=config)
1988
def get_bound_location(self):
1989
"""See Branch.set_push_location."""
1990
return self._get_bound_location(True)
1992
def get_old_bound_location(self):
1993
"""See Branch.get_old_bound_location"""
1994
return self._get_bound_location(False)
1996
def set_append_revisions_only(self, enabled):
2001
self.get_config().set_user_option('append_revisions_only', value)
2003
def _get_append_revisions_only(self):
2004
value = self.get_config().get_user_option('append_revisions_only')
2005
return value == 'True'
2007
def _synchronize_history(self, destination, revision_id):
2008
"""Synchronize last revision and revision history between branches.
2010
This version is most efficient when the destination is also a
2011
BzrBranch6, but works for BzrBranch5, as long as the destination's
2012
repository contains all the lefthand ancestors of the intended
2013
last_revision. If not, set_last_revision_info will fail.
2015
:param destination: The branch to copy the history into
2016
:param revision_id: The revision-id to truncate history at. May
2017
be None to copy complete history.
2019
if revision_id is None:
2020
revno, revision_id = self.last_revision_info()
2022
revno = self.revision_id_to_revno(revision_id)
2023
destination.set_last_revision_info(revno, revision_id)
2025
def _make_tags(self):
2026
return BasicTags(self)
2029
class BranchTestProviderAdapter(object):
2030
"""A tool to generate a suite testing multiple branch formats at once.
2032
This is done by copying the test once for each transport and injecting
2033
the transport_server, transport_readonly_server, and branch_format
2034
classes into each copy. Each copy is also given a new id() to make it
2038
def __init__(self, transport_server, transport_readonly_server, formats):
2039
self._transport_server = transport_server
2040
self._transport_readonly_server = transport_readonly_server
2041
self._formats = formats
2043
def adapt(self, test):
2044
result = TestSuite()
2045
for branch_format, bzrdir_format in self._formats:
2046
new_test = deepcopy(test)
2047
new_test.transport_server = self._transport_server
2048
new_test.transport_readonly_server = self._transport_readonly_server
2049
new_test.bzrdir_format = bzrdir_format
2050
new_test.branch_format = branch_format
2051
def make_new_test_id():
2052
# the format can be either a class or an instance
2053
name = getattr(branch_format, '__name__',
2054
branch_format.__class__.__name__)
2055
new_id = "%s(%s)" % (new_test.id(), name)
2056
return lambda: new_id
2057
new_test.id = make_new_test_id()
2058
result.addTest(new_test)
2062
######################################################################
2063
# results of operations
2066
class _Result(object):
2068
def _show_tag_conficts(self, to_file):
2069
if not getattr(self, 'tag_conflicts', None):
2071
to_file.write('Conflicting tags:\n')
2072
for name, value1, value2 in self.tag_conflicts:
2073
to_file.write(' %s\n' % (name, ))
2076
class PullResult(_Result):
2077
"""Result of a Branch.pull operation.
2079
:ivar old_revno: Revision number before pull.
2080
:ivar new_revno: Revision number after pull.
2081
:ivar old_revid: Tip revision id before pull.
2082
:ivar new_revid: Tip revision id after pull.
2083
:ivar source_branch: Source (local) branch object.
2084
:ivar master_branch: Master branch of the target, or None.
2085
:ivar target_branch: Target/destination branch object.
2089
# DEPRECATED: pull used to return the change in revno
2090
return self.new_revno - self.old_revno
2092
def report(self, to_file):
2093
if self.old_revid == self.new_revid:
2094
to_file.write('No revisions to pull.\n')
2096
to_file.write('Now on revision %d.\n' % self.new_revno)
2097
self._show_tag_conficts(to_file)
2100
class PushResult(_Result):
2101
"""Result of a Branch.push operation.
2103
:ivar old_revno: Revision number before push.
2104
:ivar new_revno: Revision number after push.
2105
:ivar old_revid: Tip revision id before push.
2106
:ivar new_revid: Tip revision id after push.
2107
:ivar source_branch: Source branch object.
2108
:ivar master_branch: Master branch of the target, or None.
2109
:ivar target_branch: Target/destination branch object.
2113
# DEPRECATED: push used to return the change in revno
2114
return self.new_revno - self.old_revno
2116
def report(self, to_file):
2117
"""Write a human-readable description of the result."""
2118
if self.old_revid == self.new_revid:
2119
to_file.write('No new revisions to push.\n')
2121
to_file.write('Pushed up to revision %d.\n' % self.new_revno)
2122
self._show_tag_conficts(to_file)
2125
class BranchCheckResult(object):
2126
"""Results of checking branch consistency.
2131
def __init__(self, branch):
2132
self.branch = branch
2134
def report_results(self, verbose):
2135
"""Report the check results via trace.note.
2137
:param verbose: Requests more detailed display of what was checked,
2140
note('checked branch %s format %s',
2142
self.branch._format)
2145
class Converter5to6(object):
2146
"""Perform an in-place upgrade of format 5 to format 6"""
2148
def convert(self, branch):
2149
# Data for 5 and 6 can peacefully coexist.
2150
format = BzrBranchFormat6()
2151
new_branch = format.open(branch.bzrdir, _found=True)
2153
# Copy source data into target
2154
new_branch.set_last_revision_info(*branch.last_revision_info())
2155
new_branch.set_parent(branch.get_parent())
2156
new_branch.set_bound_location(branch.get_bound_location())
2157
new_branch.set_push_location(branch.get_push_location())
2159
# New branch has no tags by default
2160
new_branch.tags._set_tag_dict({})
2162
# Copying done; now update target format
2163
new_branch.control_files.put_utf8('format',
2164
format.get_format_string())
2166
# Clean up old files
2167
new_branch.control_files._transport.delete('revision-history')
2169
branch.set_parent(None)
2172
branch.set_bound_location(None)
added
removed
bzrlib/branch.py
