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# Copyright (C) 2005, 2006 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.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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# this is really an instance variable - FIXME move it there
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def __init__(self, *ignored, **ignored_too):
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raise NotImplementedError('The Branch class is abstract')
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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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from_history = from_branch.revision_history()
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last_revision = from_history[-1]
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# no history in the source branch
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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_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 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 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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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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raise NotImplementedError(self.pull)
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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 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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new_history = self.revision_history()
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if revision_id is not None:
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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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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 import repository
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format = bzrdir.BzrDirMetaFormat1()
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format.repository_format = repository.RepositoryFormat7()
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format = self.repository.bzrdir.cloning_metadir()
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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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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_string)
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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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class BzrBranchFormat4(BranchFormat):
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"""Bzr branch format 4.
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- a revision-history file.
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- a branch-lock lock file [ to be shared with the bzrdir ]
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def get_format_description(self):
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"""See BranchFormat.get_format_description()."""
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return "Branch format 4"
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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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mutter('creating branch in %s', a_bzrdir.transport.base)
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branch_transport = a_bzrdir.get_branch_transport(self)
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utf8_files = [('revision-history', ''),
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control_files = lockable_files.LockableFiles(branch_transport,
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'branch-lock', lockable_files.TransportLock)
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control_files.create_lock()
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control_files.lock_write()
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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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super(BzrBranchFormat4, self).__init__()
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self._matchingbzrdir = bzrdir.BzrDirFormat6()
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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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# we are being called directly and must probe.
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raise NotImplementedError
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return BzrBranch(_format=self,
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_control_files=a_bzrdir._control_files,
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_repository=a_bzrdir.open_repository())
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return "Bazaar-NG branch format 4"
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class BzrBranchFormat5(BranchFormat):
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"""Bzr branch format 5.
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- a revision-history file.
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- a lock dir guarding the branch itself
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- all of this stored in a branch/ subdirectory
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- works with shared repositories.
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This format is new in bzr 0.8.
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def get_format_string(self):
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"""See BranchFormat.get_format_string()."""
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return "Bazaar-NG branch format 5\n"
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def get_format_description(self):
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"""See BranchFormat.get_format_description()."""
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return "Branch format 5"
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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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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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utf8_files = [('revision-history', ''),
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control_files = lockable_files.LockableFiles(branch_transport, 'lock',
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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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super(BzrBranchFormat5, self).__init__()
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self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
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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.
822
format = BranchFormat.find_format(a_bzrdir)
823
assert format.__class__ == self.__class__
824
transport = a_bzrdir.get_branch_transport(None)
825
control_files = lockable_files.LockableFiles(transport, 'lock',
827
return BzrBranch5(_format=self,
828
_control_files=control_files,
830
_repository=a_bzrdir.find_repository())
833
return "Bazaar-NG Metadir branch format 5"
836
class BzrBranchFormat6(BzrBranchFormat5):
837
"""Branch format with last-revision
839
Unlike previous formats, this has no explicit revision history, instead
840
the left-parent revision history is used.
843
def get_format_string(self):
844
"""See BranchFormat.get_format_string()."""
845
return "Bazaar-NG branch format 6\n"
847
def get_format_description(self):
848
"""See BranchFormat.get_format_description()."""
849
return "Branch format 6"
851
def initialize(self, a_bzrdir):
852
"""Create a branch of this format in a_bzrdir."""
853
mutter('creating branch %r in %s', self, a_bzrdir.transport.base)
854
branch_transport = a_bzrdir.get_branch_transport(self)
855
utf8_files = [('last-revision', ''),
859
control_files = lockable_files.LockableFiles(branch_transport, 'lock',
861
control_files.create_lock()
862
control_files.lock_write()
863
control_files.put_utf8('format', self.get_format_string())
865
for file, content in utf8_files:
866
control_files.put_utf8(file, content)
868
control_files.unlock()
869
return self.open(a_bzrdir, _found=True, )
871
def open(self, a_bzrdir, _found=False):
872
"""Return the branch object for a_bzrdir
874
_found is a private parameter, do not use it. It is used to indicate
875
if format probing has already be done.
878
format = BranchFormat.find_format(a_bzrdir)
879
assert format.__class__ == self.__class__
880
transport = a_bzrdir.get_branch_transport(None)
881
control_files = lockable_files.LockableFiles(transport, 'lock',
883
return BzrBranch6(_format=self,
884
_control_files=control_files,
886
_repository=a_bzrdir.find_repository())
889
class BranchReferenceFormat(BranchFormat):
890
"""Bzr branch reference format.
892
Branch references are used in implementing checkouts, they
893
act as an alias to the real branch which is at some other url.
900
def get_format_string(self):
901
"""See BranchFormat.get_format_string()."""
902
return "Bazaar-NG Branch Reference Format 1\n"
904
def get_format_description(self):
905
"""See BranchFormat.get_format_description()."""
906
return "Checkout reference format 1"
908
def initialize(self, a_bzrdir, target_branch=None):
909
"""Create a branch of this format in a_bzrdir."""
910
if target_branch is None:
911
# this format does not implement branch itself, thus the implicit
912
# creation contract must see it as uninitializable
913
raise errors.UninitializableFormat(self)
914
mutter('creating branch reference in %s', a_bzrdir.transport.base)
915
branch_transport = a_bzrdir.get_branch_transport(self)
916
branch_transport.put_bytes('location',
917
target_branch.bzrdir.root_transport.base)
918
branch_transport.put_bytes('format', self.get_format_string())
919
return self.open(a_bzrdir, _found=True)
922
super(BranchReferenceFormat, self).__init__()
923
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
925
def _make_reference_clone_function(format, a_branch):
926
"""Create a clone() routine for a branch dynamically."""
927
def clone(to_bzrdir, revision_id=None):
928
"""See Branch.clone()."""
929
return format.initialize(to_bzrdir, a_branch)
930
# cannot obey revision_id limits when cloning a reference ...
931
# FIXME RBC 20060210 either nuke revision_id for clone, or
932
# emit some sort of warning/error to the caller ?!
935
def open(self, a_bzrdir, _found=False):
936
"""Return the branch that the branch reference in a_bzrdir points at.
938
_found is a private parameter, do not use it. It is used to indicate
939
if format probing has already be done.
942
format = BranchFormat.find_format(a_bzrdir)
943
assert format.__class__ == self.__class__
944
transport = a_bzrdir.get_branch_transport(None)
945
real_bzrdir = bzrdir.BzrDir.open(transport.get('location').read())
946
result = real_bzrdir.open_branch()
947
# this changes the behaviour of result.clone to create a new reference
948
# rather than a copy of the content of the branch.
949
# I did not use a proxy object because that needs much more extensive
950
# testing, and we are only changing one behaviour at the moment.
951
# If we decide to alter more behaviours - i.e. the implicit nickname
952
# then this should be refactored to introduce a tested proxy branch
953
# and a subclass of that for use in overriding clone() and ....
955
result.clone = self._make_reference_clone_function(result)
959
# formats which have no format string are not discoverable
960
# and not independently creatable, so are not registered.
961
__default_format = BzrBranchFormat5()
962
BranchFormat.register_format(__default_format)
963
BranchFormat.register_format(BranchReferenceFormat())
964
BranchFormat.register_format(BzrBranchFormat6())
965
BranchFormat.set_default_format(__default_format)
966
_legacy_formats = [BzrBranchFormat4(),
969
class BzrBranch(Branch):
970
"""A branch stored in the actual filesystem.
972
Note that it's "local" in the context of the filesystem; it doesn't
973
really matter if it's on an nfs/smb/afs/coda/... share, as long as
974
it's writable, and can be accessed via the normal filesystem API.
977
def __init__(self, transport=DEPRECATED_PARAMETER, init=DEPRECATED_PARAMETER,
978
relax_version_check=DEPRECATED_PARAMETER, _format=None,
979
_control_files=None, a_bzrdir=None, _repository=None):
980
"""Create new branch object at a particular location.
982
transport -- A Transport object, defining how to access files.
984
init -- If True, create new control files in a previously
985
unversioned directory. If False, the branch must already
988
relax_version_check -- If true, the usual check for the branch
989
version is not applied. This is intended only for
990
upgrade/recovery type use; it's not guaranteed that
991
all operations will work on old format branches.
994
self.bzrdir = bzrdir.BzrDir.open(transport.base)
996
self.bzrdir = a_bzrdir
997
self._transport = self.bzrdir.transport.clone('..')
998
self._base = self._transport.base
999
self._format = _format
1000
if _control_files is None:
1001
raise ValueError('BzrBranch _control_files is None')
1002
self.control_files = _control_files
1003
if deprecated_passed(init):
1004
warn("BzrBranch.__init__(..., init=XXX): The init parameter is "
1005
"deprecated as of bzr 0.8. Please use Branch.create().",
1009
# this is slower than before deprecation, oh well never mind.
1010
# -> its deprecated.
1011
self._initialize(transport.base)
1012
self._check_format(_format)
1013
if deprecated_passed(relax_version_check):
1014
warn("BzrBranch.__init__(..., relax_version_check=XXX_: The "
1015
"relax_version_check parameter is deprecated as of bzr 0.8. "
1016
"Please use BzrDir.open_downlevel, or a BzrBranchFormat's "
1020
if (not relax_version_check
1021
and not self._format.is_supported()):
1022
raise errors.UnsupportedFormatError(format=fmt)
1023
if deprecated_passed(transport):
1024
warn("BzrBranch.__init__(transport=XXX...): The transport "
1025
"parameter is deprecated as of bzr 0.8. "
1026
"Please use Branch.open, or bzrdir.open_branch().",
1029
self.repository = _repository
1032
return '%s(%r)' % (self.__class__.__name__, self.base)
1036
def _get_base(self):
1039
base = property(_get_base, doc="The URL for the root of this branch.")
1041
def _finish_transaction(self):
1042
"""Exit the current transaction."""
1043
return self.control_files._finish_transaction()
1045
def get_transaction(self):
1046
"""Return the current active transaction.
1048
If no transaction is active, this returns a passthrough object
1049
for which all data is immediately flushed and no caching happens.
1051
# this is an explicit function so that we can do tricky stuff
1052
# when the storage in rev_storage is elsewhere.
1053
# we probably need to hook the two 'lock a location' and
1054
# 'have a transaction' together more delicately, so that
1055
# we can have two locks (branch and storage) and one transaction
1056
# ... and finishing the transaction unlocks both, but unlocking
1057
# does not. - RBC 20051121
1058
return self.control_files.get_transaction()
1060
def _set_transaction(self, transaction):
1061
"""Set a new active transaction."""
1062
return self.control_files._set_transaction(transaction)
1064
def abspath(self, name):
1065
"""See Branch.abspath."""
1066
return self.control_files._transport.abspath(name)
1068
def _check_format(self, format):
1069
"""Identify the branch format if needed.
1071
The format is stored as a reference to the format object in
1072
self._format for code that needs to check it later.
1074
The format parameter is either None or the branch format class
1075
used to open this branch.
1077
FIXME: DELETE THIS METHOD when pre 0.8 support is removed.
1080
format = BranchFormat.find_format(self.bzrdir)
1081
self._format = format
1082
mutter("got branch format %s", self._format)
1085
def get_root_id(self):
1086
"""See Branch.get_root_id."""
1087
tree = self.repository.revision_tree(self.last_revision())
1088
return tree.inventory.root.file_id
1090
def is_locked(self):
1091
return self.control_files.is_locked()
1093
def lock_write(self):
1094
self.repository.lock_write()
1096
self.control_files.lock_write()
1098
self.repository.unlock()
1101
def lock_read(self):
1102
self.repository.lock_read()
1104
self.control_files.lock_read()
1106
self.repository.unlock()
1110
# TODO: test for failed two phase locks. This is known broken.
1112
self.control_files.unlock()
1114
self.repository.unlock()
1116
def peek_lock_mode(self):
1117
if self.control_files._lock_count == 0:
1120
return self.control_files._lock_mode
1122
def get_physical_lock_status(self):
1123
return self.control_files.get_physical_lock_status()
1126
def print_file(self, file, revision_id):
1127
"""See Branch.print_file."""
1128
return self.repository.print_file(file, revision_id)
1131
def append_revision(self, *revision_ids):
1132
"""See Branch.append_revision."""
1133
for revision_id in revision_ids:
1134
mutter("add {%s} to revision-history" % revision_id)
1135
rev_history = self.revision_history()
1136
rev_history.extend(revision_ids)
1137
self.set_revision_history(rev_history)
1140
def set_revision_history(self, rev_history):
1141
"""See Branch.set_revision_history."""
1142
self.control_files.put_utf8(
1143
'revision-history', '\n'.join(rev_history))
1144
transaction = self.get_transaction()
1145
history = transaction.map.find_revision_history()
1146
if history is not None:
1147
# update the revision history in the identity map.
1148
history[:] = list(rev_history)
1149
# this call is disabled because revision_history is
1150
# not really an object yet, and the transaction is for objects.
1151
# transaction.register_dirty(history)
1153
transaction.map.add_revision_history(rev_history)
1154
# this call is disabled because revision_history is
1155
# not really an object yet, and the transaction is for objects.
1156
# transaction.register_clean(history)
1159
def revision_history(self):
1160
"""See Branch.revision_history."""
1161
transaction = self.get_transaction()
1162
history = transaction.map.find_revision_history()
1163
if history is not None:
1164
# mutter("cache hit for revision-history in %s", self)
1165
return list(history)
1166
decode_utf8 = cache_utf8.decode
1167
history = [decode_utf8(l.rstrip('\r\n')) for l in
1168
self.control_files.get('revision-history').readlines()]
1169
transaction.map.add_revision_history(history)
1170
# this call is disabled because revision_history is
1171
# not really an object yet, and the transaction is for objects.
1172
# transaction.register_clean(history, precious=True)
1173
return list(history)
1176
def generate_revision_history(self, revision_id, last_rev=None,
1178
"""Create a new revision history that will finish with revision_id.
1180
:param revision_id: the new tip to use.
1181
:param last_rev: The previous last_revision. If not None, then this
1182
must be a ancestory of revision_id, or DivergedBranches is raised.
1183
:param other_branch: The other branch that DivergedBranches should
1184
raise with respect to.
1186
# stop_revision must be a descendant of last_revision
1187
stop_graph = self.repository.get_revision_graph(revision_id)
1188
if last_rev is not None and last_rev not in stop_graph:
1189
# our previous tip is not merged into stop_revision
1190
raise errors.DivergedBranches(self, other_branch)
1191
# make a new revision history from the graph
1192
current_rev_id = revision_id
1194
while current_rev_id not in (None, _mod_revision.NULL_REVISION):
1195
new_history.append(current_rev_id)
1196
current_rev_id_parents = stop_graph[current_rev_id]
1198
current_rev_id = current_rev_id_parents[0]
1200
current_rev_id = None
1201
new_history.reverse()
1202
self.set_revision_history(new_history)
1205
def update_revisions(self, other, stop_revision=None):
1206
"""See Branch.update_revisions."""
1209
if stop_revision is None:
1210
stop_revision = other.last_revision()
1211
if stop_revision is None:
1212
# if there are no commits, we're done.
1214
# whats the current last revision, before we fetch [and change it
1216
last_rev = self.last_revision()
1217
# we fetch here regardless of whether we need to so that we pickup
1219
self.fetch(other, stop_revision)
1220
my_ancestry = self.repository.get_ancestry(last_rev)
1221
if stop_revision in my_ancestry:
1222
# last_revision is a descendant of stop_revision
1224
self.generate_revision_history(stop_revision, last_rev=last_rev,
1229
def basis_tree(self):
1230
"""See Branch.basis_tree."""
1231
return self.repository.revision_tree(self.last_revision())
1233
@deprecated_method(zero_eight)
1234
def working_tree(self):
1235
"""Create a Working tree object for this branch."""
1237
from bzrlib.transport.local import LocalTransport
1238
if (self.base.find('://') != -1 or
1239
not isinstance(self._transport, LocalTransport)):
1240
raise NoWorkingTree(self.base)
1241
return self.bzrdir.open_workingtree()
1244
def pull(self, source, overwrite=False, stop_revision=None):
1245
"""See Branch.pull."""
1248
old_count = len(self.revision_history())
1250
self.update_revisions(source, stop_revision)
1251
except DivergedBranches:
1255
self.set_revision_history(source.revision_history())
1256
new_count = len(self.revision_history())
1257
return new_count - old_count
1261
def get_parent(self):
1262
"""See Branch.get_parent."""
1264
_locs = ['parent', 'pull', 'x-pull']
1265
assert self.base[-1] == '/'
1268
parent = self.control_files.get(l).read().strip('\n')
1271
# This is an old-format absolute path to a local branch
1272
# turn it into a url
1273
if parent.startswith('/'):
1274
parent = urlutils.local_path_to_url(parent.decode('utf8'))
1276
return urlutils.join(self.base[:-1], parent)
1277
except errors.InvalidURLJoin, e:
1278
raise errors.InaccessibleParent(parent, self.base)
1281
def get_push_location(self):
1282
"""See Branch.get_push_location."""
1283
push_loc = self.get_config().get_user_option('push_location')
1286
def set_push_location(self, location):
1287
"""See Branch.set_push_location."""
1288
self.get_config().set_user_option(
1289
'push_location', location,
1290
store=_mod_config.STORE_LOCATION_NORECURSE)
1293
def set_parent(self, url):
1294
"""See Branch.set_parent."""
1295
# TODO: Maybe delete old location files?
1296
# URLs should never be unicode, even on the local fs,
1297
# FIXUP this and get_parent in a future branch format bump:
1298
# read and rewrite the file, and have the new format code read
1299
# using .get not .get_utf8. RBC 20060125
1301
self.control_files._transport.delete('parent')
1303
if isinstance(url, unicode):
1305
url = url.encode('ascii')
1306
except UnicodeEncodeError:
1307
raise bzrlib.errors.InvalidURL(url,
1308
"Urls must be 7-bit ascii, "
1309
"use bzrlib.urlutils.escape")
1311
url = urlutils.relative_url(self.base, url)
1312
self.control_files.put('parent', StringIO(url + '\n'))
1314
@deprecated_function(zero_nine)
1315
def tree_config(self):
1316
"""DEPRECATED; call get_config instead.
1317
TreeConfig has become part of BranchConfig."""
1318
return TreeConfig(self)
1321
class BzrBranch5(BzrBranch):
1322
"""A format 5 branch. This supports new features over plan branches.
1324
It has support for a master_branch which is the data for bound branches.
1332
super(BzrBranch5, self).__init__(_format=_format,
1333
_control_files=_control_files,
1335
_repository=_repository)
1338
def pull(self, source, overwrite=False, stop_revision=None):
1339
"""Updates branch.pull to be bound branch aware."""
1340
bound_location = self.get_bound_location()
1341
if source.base != bound_location:
1342
# not pulling from master, so we need to update master.
1343
master_branch = self.get_master_branch()
1345
master_branch.pull(source)
1346
source = master_branch
1347
return super(BzrBranch5, self).pull(source, overwrite, stop_revision)
1349
def get_bound_location(self):
1351
return self.control_files.get_utf8('bound').read()[:-1]
1352
except errors.NoSuchFile:
1356
def get_master_branch(self):
1357
"""Return the branch we are bound to.
1359
:return: Either a Branch, or None
1361
This could memoise the branch, but if thats done
1362
it must be revalidated on each new lock.
1363
So for now we just don't memoise it.
1364
# RBC 20060304 review this decision.
1366
bound_loc = self.get_bound_location()
1370
return Branch.open(bound_loc)
1371
except (errors.NotBranchError, errors.ConnectionError), e:
1372
raise errors.BoundBranchConnectionFailure(
1376
def set_bound_location(self, location):
1377
"""Set the target where this branch is bound to.
1379
:param location: URL to the target branch
1382
self.control_files.put_utf8('bound', location+'\n')
1385
self.control_files._transport.delete('bound')
1391
def bind(self, other):
1392
"""Bind this branch to the branch other.
1394
This does not push or pull data between the branches, though it does
1395
check for divergence to raise an error when the branches are not
1396
either the same, or one a prefix of the other. That behaviour may not
1397
be useful, so that check may be removed in future.
1399
:param other: The branch to bind to
1402
# TODO: jam 20051230 Consider checking if the target is bound
1403
# It is debatable whether you should be able to bind to
1404
# a branch which is itself bound.
1405
# Committing is obviously forbidden,
1406
# but binding itself may not be.
1407
# Since we *have* to check at commit time, we don't
1408
# *need* to check here
1410
# we want to raise diverged if:
1411
# last_rev is not in the other_last_rev history, AND
1412
# other_last_rev is not in our history, and do it without pulling
1414
last_rev = self.last_revision()
1415
if last_rev is not None:
1418
other_last_rev = other.last_revision()
1419
if other_last_rev is not None:
1420
# neither branch is new, we have to do some work to
1421
# ascertain diversion.
1422
remote_graph = other.repository.get_revision_graph(
1424
local_graph = self.repository.get_revision_graph(last_rev)
1425
if (last_rev not in remote_graph and
1426
other_last_rev not in local_graph):
1427
raise errors.DivergedBranches(self, other)
1430
self.set_bound_location(other.base)
1434
"""If bound, unbind"""
1435
return self.set_bound_location(None)
1439
"""Synchronise this branch with the master branch if any.
1441
:return: None or the last_revision that was pivoted out during the
1444
master = self.get_master_branch()
1445
if master is not None:
1446
old_tip = self.last_revision()
1447
self.pull(master, overwrite=True)
1448
if old_tip in self.repository.get_ancestry(self.last_revision()):
1454
class BzrBranch6(BzrBranch5):
1458
class BranchTestProviderAdapter(object):
1459
"""A tool to generate a suite testing multiple branch formats at once.
1461
This is done by copying the test once for each transport and injecting
1462
the transport_server, transport_readonly_server, and branch_format
1463
classes into each copy. Each copy is also given a new id() to make it
1467
def __init__(self, transport_server, transport_readonly_server, formats):
1468
self._transport_server = transport_server
1469
self._transport_readonly_server = transport_readonly_server
1470
self._formats = formats
1472
def adapt(self, test):
1473
result = TestSuite()
1474
for branch_format, bzrdir_format in self._formats:
1475
new_test = deepcopy(test)
1476
new_test.transport_server = self._transport_server
1477
new_test.transport_readonly_server = self._transport_readonly_server
1478
new_test.bzrdir_format = bzrdir_format
1479
new_test.branch_format = branch_format
1480
def make_new_test_id():
1481
new_id = "%s(%s)" % (new_test.id(), branch_format.__class__.__name__)
1482
return lambda: new_id
1483
new_test.id = make_new_test_id()
1484
result.addTest(new_test)
1488
class BranchCheckResult(object):
1489
"""Results of checking branch consistency.
1494
def __init__(self, branch):
1495
self.branch = branch
1497
def report_results(self, verbose):
1498
"""Report the check results via trace.note.
1500
:param verbose: Requests more detailed display of what was checked,
1503
note('checked branch %s format %s',
1505
self.branch._format)
1508
######################################################################
1512
@deprecated_function(zero_eight)
1513
def is_control_file(*args, **kwargs):
1514
"""See bzrlib.workingtree.is_control_file."""
1515
from bzrlib import workingtree
1516
return workingtree.is_control_file(*args, **kwargs)
added
removed
bzrlib/branch.py
