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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
history = self.control_files.get('revision-history').read().split('\n')
1337
if history[-1:] == ['']:
1338
# There shouldn't be a trailing newline, but just in case.
1343
def revision_history(self):
1344
"""See Branch.revision_history."""
1345
transaction = self.get_transaction()
1346
history = transaction.map.find_revision_history()
1347
if history is not None:
1348
# mutter("cache hit for revision-history in %s", self)
1349
return list(history)
1350
history = self._gen_revision_history()
1351
transaction.map.add_revision_history(history)
1352
# this call is disabled because revision_history is
1353
# not really an object yet, and the transaction is for objects.
1354
# transaction.register_clean(history, precious=True)
1355
return list(history)
1357
def _lefthand_history(self, revision_id, last_rev=None,
1359
# stop_revision must be a descendant of last_revision
1360
stop_graph = self.repository.get_revision_graph(revision_id)
1361
if last_rev is not None and last_rev not in stop_graph:
1362
# our previous tip is not merged into stop_revision
1363
raise errors.DivergedBranches(self, other_branch)
1364
# make a new revision history from the graph
1365
current_rev_id = revision_id
1367
while current_rev_id not in (None, _mod_revision.NULL_REVISION):
1368
new_history.append(current_rev_id)
1369
current_rev_id_parents = stop_graph[current_rev_id]
1371
current_rev_id = current_rev_id_parents[0]
1373
current_rev_id = None
1374
new_history.reverse()
1378
def generate_revision_history(self, revision_id, last_rev=None,
1380
"""Create a new revision history that will finish with revision_id.
1382
:param revision_id: the new tip to use.
1383
:param last_rev: The previous last_revision. If not None, then this
1384
must be a ancestory of revision_id, or DivergedBranches is raised.
1385
:param other_branch: The other branch that DivergedBranches should
1386
raise with respect to.
1388
revision_id = osutils.safe_revision_id(revision_id)
1389
self.set_revision_history(self._lefthand_history(revision_id,
1390
last_rev, other_branch))
1393
def update_revisions(self, other, stop_revision=None):
1394
"""See Branch.update_revisions."""
1397
if stop_revision is None:
1398
stop_revision = other.last_revision()
1399
if stop_revision is None:
1400
# if there are no commits, we're done.
1403
stop_revision = osutils.safe_revision_id(stop_revision)
1404
# whats the current last revision, before we fetch [and change it
1406
last_rev = self.last_revision()
1407
# we fetch here regardless of whether we need to so that we pickup
1409
self.fetch(other, stop_revision)
1410
my_ancestry = self.repository.get_ancestry(last_rev)
1411
if stop_revision in my_ancestry:
1412
# last_revision is a descendant of stop_revision
1414
self.generate_revision_history(stop_revision, last_rev=last_rev,
1419
def basis_tree(self):
1420
"""See Branch.basis_tree."""
1421
return self.repository.revision_tree(self.last_revision())
1423
@deprecated_method(zero_eight)
1424
def working_tree(self):
1425
"""Create a Working tree object for this branch."""
1427
from bzrlib.transport.local import LocalTransport
1428
if (self.base.find('://') != -1 or
1429
not isinstance(self._transport, LocalTransport)):
1430
raise NoWorkingTree(self.base)
1431
return self.bzrdir.open_workingtree()
1434
def pull(self, source, overwrite=False, stop_revision=None,
1435
_hook_master=None, _run_hooks=True):
1438
:param _hook_master: Private parameter - set the branch to
1439
be supplied as the master to push hooks.
1440
:param _run_hooks: Private parameter - allow disabling of
1441
hooks, used when pushing to a master branch.
1443
result = PullResult()
1444
result.source_branch = source
1445
result.target_branch = self
1448
result.old_revno, result.old_revid = self.last_revision_info()
1450
self.update_revisions(source, stop_revision)
1451
except DivergedBranches:
1455
if stop_revision is None:
1456
stop_revision = source.last_revision()
1457
self.generate_revision_history(stop_revision)
1458
result.tag_conflicts = source.tags.merge_to(self.tags)
1459
result.new_revno, result.new_revid = self.last_revision_info()
1461
result.master_branch = _hook_master
1462
result.local_branch = self
1464
result.master_branch = self
1465
result.local_branch = None
1467
for hook in Branch.hooks['post_pull']:
1473
def _get_parent_location(self):
1474
_locs = ['parent', 'pull', 'x-pull']
1477
return self.control_files.get(l).read().strip('\n')
1483
def push(self, target, overwrite=False, stop_revision=None,
1484
_hook_master=None, _run_hooks=True):
1487
:param _hook_master: Private parameter - set the branch to
1488
be supplied as the master to push hooks.
1489
:param _run_hooks: Private parameter - allow disabling of
1490
hooks, used when pushing to a master branch.
1492
result = PushResult()
1493
result.source_branch = self
1494
result.target_branch = target
1497
result.old_revno, result.old_revid = target.last_revision_info()
1499
target.update_revisions(self, stop_revision)
1500
except DivergedBranches:
1504
target.set_revision_history(self.revision_history())
1505
result.tag_conflicts = self.tags.merge_to(target.tags)
1506
result.new_revno, result.new_revid = target.last_revision_info()
1508
result.master_branch = _hook_master
1509
result.local_branch = target
1511
result.master_branch = target
1512
result.local_branch = None
1514
for hook in Branch.hooks['post_push']:
1520
def get_parent(self):
1521
"""See Branch.get_parent."""
1523
assert self.base[-1] == '/'
1524
parent = self._get_parent_location()
1527
# This is an old-format absolute path to a local branch
1528
# turn it into a url
1529
if parent.startswith('/'):
1530
parent = urlutils.local_path_to_url(parent.decode('utf8'))
1532
return urlutils.join(self.base[:-1], parent)
1533
except errors.InvalidURLJoin, e:
1534
raise errors.InaccessibleParent(parent, self.base)
1536
def get_push_location(self):
1537
"""See Branch.get_push_location."""
1538
push_loc = self.get_config().get_user_option('push_location')
1541
def set_push_location(self, location):
1542
"""See Branch.set_push_location."""
1543
self.get_config().set_user_option(
1544
'push_location', location,
1545
store=_mod_config.STORE_LOCATION_NORECURSE)
1548
def set_parent(self, url):
1549
"""See Branch.set_parent."""
1550
# TODO: Maybe delete old location files?
1551
# URLs should never be unicode, even on the local fs,
1552
# FIXUP this and get_parent in a future branch format bump:
1553
# read and rewrite the file, and have the new format code read
1554
# using .get not .get_utf8. RBC 20060125
1556
if isinstance(url, unicode):
1558
url = url.encode('ascii')
1559
except UnicodeEncodeError:
1560
raise bzrlib.errors.InvalidURL(url,
1561
"Urls must be 7-bit ascii, "
1562
"use bzrlib.urlutils.escape")
1563
url = urlutils.relative_url(self.base, url)
1564
self._set_parent_location(url)
1566
def _set_parent_location(self, url):
1568
self.control_files._transport.delete('parent')
1570
assert isinstance(url, str)
1571
self.control_files.put_bytes('parent', url + '\n')
1573
@deprecated_function(zero_nine)
1574
def tree_config(self):
1575
"""DEPRECATED; call get_config instead.
1576
TreeConfig has become part of BranchConfig."""
1577
return TreeConfig(self)
1580
class BzrBranch5(BzrBranch):
1581
"""A format 5 branch. This supports new features over plan branches.
1583
It has support for a master_branch which is the data for bound branches.
1591
super(BzrBranch5, self).__init__(_format=_format,
1592
_control_files=_control_files,
1594
_repository=_repository)
1597
def pull(self, source, overwrite=False, stop_revision=None,
1599
"""Extends branch.pull to be bound branch aware.
1601
:param _run_hooks: Private parameter used to force hook running
1602
off during bound branch double-pushing.
1604
bound_location = self.get_bound_location()
1605
master_branch = None
1606
if bound_location and source.base != bound_location:
1607
# not pulling from master, so we need to update master.
1608
master_branch = self.get_master_branch()
1609
master_branch.lock_write()
1612
# pull from source into master.
1613
master_branch.pull(source, overwrite, stop_revision,
1615
return super(BzrBranch5, self).pull(source, overwrite,
1616
stop_revision, _hook_master=master_branch,
1617
_run_hooks=_run_hooks)
1620
master_branch.unlock()
1623
def push(self, target, overwrite=False, stop_revision=None):
1624
"""Updates branch.push to be bound branch aware."""
1625
bound_location = target.get_bound_location()
1626
master_branch = None
1627
if bound_location and target.base != bound_location:
1628
# not pushing to master, so we need to update master.
1629
master_branch = target.get_master_branch()
1630
master_branch.lock_write()
1633
# push into the master from this branch.
1634
super(BzrBranch5, self).push(master_branch, overwrite,
1635
stop_revision, _run_hooks=False)
1636
# and push into the target branch from this. Note that we push from
1637
# this branch again, because its considered the highest bandwidth
1639
return super(BzrBranch5, self).push(target, overwrite,
1640
stop_revision, _hook_master=master_branch)
1643
master_branch.unlock()
1645
def get_bound_location(self):
1647
return self.control_files.get_utf8('bound').read()[:-1]
1648
except errors.NoSuchFile:
1652
def get_master_branch(self):
1653
"""Return the branch we are bound to.
1655
:return: Either a Branch, or None
1657
This could memoise the branch, but if thats done
1658
it must be revalidated on each new lock.
1659
So for now we just don't memoise it.
1660
# RBC 20060304 review this decision.
1662
bound_loc = self.get_bound_location()
1666
return Branch.open(bound_loc)
1667
except (errors.NotBranchError, errors.ConnectionError), e:
1668
raise errors.BoundBranchConnectionFailure(
1672
def set_bound_location(self, location):
1673
"""Set the target where this branch is bound to.
1675
:param location: URL to the target branch
1678
self.control_files.put_utf8('bound', location+'\n')
1681
self.control_files._transport.delete('bound')
1687
def bind(self, other):
1688
"""Bind this branch to the branch other.
1690
This does not push or pull data between the branches, though it does
1691
check for divergence to raise an error when the branches are not
1692
either the same, or one a prefix of the other. That behaviour may not
1693
be useful, so that check may be removed in future.
1695
:param other: The branch to bind to
1698
# TODO: jam 20051230 Consider checking if the target is bound
1699
# It is debatable whether you should be able to bind to
1700
# a branch which is itself bound.
1701
# Committing is obviously forbidden,
1702
# but binding itself may not be.
1703
# Since we *have* to check at commit time, we don't
1704
# *need* to check here
1706
# we want to raise diverged if:
1707
# last_rev is not in the other_last_rev history, AND
1708
# other_last_rev is not in our history, and do it without pulling
1710
last_rev = self.last_revision()
1711
if last_rev is not None:
1714
other_last_rev = other.last_revision()
1715
if other_last_rev is not None:
1716
# neither branch is new, we have to do some work to
1717
# ascertain diversion.
1718
remote_graph = other.repository.get_revision_graph(
1720
local_graph = self.repository.get_revision_graph(last_rev)
1721
if (last_rev not in remote_graph and
1722
other_last_rev not in local_graph):
1723
raise errors.DivergedBranches(self, other)
1726
self.set_bound_location(other.base)
1730
"""If bound, unbind"""
1731
return self.set_bound_location(None)
1735
"""Synchronise this branch with the master branch if any.
1737
:return: None or the last_revision that was pivoted out during the
1740
master = self.get_master_branch()
1741
if master is not None:
1742
old_tip = self.last_revision()
1743
self.pull(master, overwrite=True)
1744
if old_tip in self.repository.get_ancestry(self.last_revision()):
1750
class BzrBranchExperimental(BzrBranch5):
1751
"""Bzr experimental branch format
1754
- a revision-history file.
1756
- a lock dir guarding the branch itself
1757
- all of this stored in a branch/ subdirectory
1758
- works with shared repositories.
1759
- a tag dictionary in the branch
1761
This format is new in bzr 0.15, but shouldn't be used for real data,
1764
This class acts as it's own BranchFormat.
1767
_matchingbzrdir = bzrdir.BzrDirMetaFormat1()
1770
def get_format_string(cls):
1771
"""See BranchFormat.get_format_string()."""
1772
return "Bazaar-NG branch format experimental\n"
1775
def get_format_description(cls):
1776
"""See BranchFormat.get_format_description()."""
1777
return "Experimental branch format"
1780
def _initialize_control_files(cls, a_bzrdir, utf8_files, lock_filename,
1782
branch_transport = a_bzrdir.get_branch_transport(cls)
1783
control_files = lockable_files.LockableFiles(branch_transport,
1784
lock_filename, lock_class)
1785
control_files.create_lock()
1786
control_files.lock_write()
1788
for filename, content in utf8_files:
1789
control_files.put_utf8(filename, content)
1791
control_files.unlock()
1794
def initialize(cls, a_bzrdir):
1795
"""Create a branch of this format in a_bzrdir."""
1796
utf8_files = [('format', cls.get_format_string()),
1797
('revision-history', ''),
1798
('branch-name', ''),
1801
cls._initialize_control_files(a_bzrdir, utf8_files,
1802
'lock', lockdir.LockDir)
1803
return cls.open(a_bzrdir, _found=True)
1806
def open(cls, a_bzrdir, _found=False):
1807
"""Return the branch object for a_bzrdir
1809
_found is a private parameter, do not use it. It is used to indicate
1810
if format probing has already be done.
1813
format = BranchFormat.find_format(a_bzrdir)
1814
assert format.__class__ == cls
1815
transport = a_bzrdir.get_branch_transport(None)
1816
control_files = lockable_files.LockableFiles(transport, 'lock',
1818
return cls(_format=cls,
1819
_control_files=control_files,
1821
_repository=a_bzrdir.find_repository())
1824
def is_supported(cls):
1827
def _make_tags(self):
1828
return BasicTags(self)
1831
def supports_tags(cls):
1835
BranchFormat.register_format(BzrBranchExperimental)
1838
class BzrBranch6(BzrBranch5):
1841
def last_revision_info(self):
1842
revision_string = self.control_files.get('last-revision').read()
1843
revno, revision_id = revision_string.rstrip('\n').split(' ', 1)
1844
revision_id = cache_utf8.get_cached_utf8(revision_id)
1846
return revno, revision_id
1848
def last_revision(self):
1849
"""Return last revision id, or None"""
1850
revision_id = self.last_revision_info()[1]
1851
if revision_id == _mod_revision.NULL_REVISION:
1855
def _write_last_revision_info(self, revno, revision_id):
1856
"""Simply write out the revision id, with no checks.
1858
Use set_last_revision_info to perform this safely.
1860
Does not update the revision_history cache.
1861
Intended to be called by set_last_revision_info and
1862
_write_revision_history.
1864
if revision_id is None:
1865
revision_id = 'null:'
1866
out_string = '%d %s\n' % (revno, revision_id)
1867
self.control_files.put_bytes('last-revision', out_string)
1870
def set_last_revision_info(self, revno, revision_id):
1871
revision_id = osutils.safe_revision_id(revision_id)
1872
if self._get_append_revisions_only():
1873
self._check_history_violation(revision_id)
1874
self._write_last_revision_info(revno, revision_id)
1875
transaction = self.get_transaction()
1876
cached_history = transaction.map.find_revision_history()
1877
if cached_history is not None:
1878
transaction.map.remove_object(cached_history)
1880
def _check_history_violation(self, revision_id):
1881
last_revision = self.last_revision()
1882
if last_revision is None:
1884
if last_revision not in self._lefthand_history(revision_id):
1885
raise errors.AppendRevisionsOnlyViolation(self.base)
1887
def _gen_revision_history(self):
1888
"""Generate the revision history from last revision
1890
history = list(self.repository.iter_reverse_revision_history(
1891
self.last_revision()))
1895
def _write_revision_history(self, history):
1896
"""Factored out of set_revision_history.
1898
This performs the actual writing to disk, with format-specific checks.
1899
It is intended to be called by BzrBranch5.set_revision_history.
1901
if len(history) == 0:
1902
last_revision = 'null:'
1904
if history != self._lefthand_history(history[-1]):
1905
raise errors.NotLefthandHistory(history)
1906
last_revision = history[-1]
1907
if self._get_append_revisions_only():
1908
self._check_history_violation(last_revision)
1909
self._write_last_revision_info(len(history), last_revision)
1912
def append_revision(self, *revision_ids):
1913
revision_ids = [osutils.safe_revision_id(r) for r in revision_ids]
1914
if len(revision_ids) == 0:
1916
prev_revno, prev_revision = self.last_revision_info()
1917
for revision in self.repository.get_revisions(revision_ids):
1918
if prev_revision == _mod_revision.NULL_REVISION:
1919
if revision.parent_ids != []:
1920
raise errors.NotLeftParentDescendant(self, prev_revision,
1921
revision.revision_id)
1923
if revision.parent_ids[0] != prev_revision:
1924
raise errors.NotLeftParentDescendant(self, prev_revision,
1925
revision.revision_id)
1926
prev_revision = revision.revision_id
1927
self.set_last_revision_info(prev_revno + len(revision_ids),
1930
def _set_config_location(self, name, url, config=None,
1931
make_relative=False):
1933
config = self.get_config()
1937
url = urlutils.relative_url(self.base, url)
1938
config.set_user_option(name, url)
1941
def _get_config_location(self, name, config=None):
1943
config = self.get_config()
1944
location = config.get_user_option(name)
1950
def _set_parent_location(self, url):
1951
"""Set the parent branch"""
1952
self._set_config_location('parent_location', url, make_relative=True)
1955
def _get_parent_location(self):
1956
"""Set the parent branch"""
1957
return self._get_config_location('parent_location')
1959
def set_push_location(self, location):
1960
"""See Branch.set_push_location."""
1961
self._set_config_location('push_location', location)
1963
def set_bound_location(self, location):
1964
"""See Branch.set_push_location."""
1966
config = self.get_config()
1967
if location is None:
1968
if config.get_user_option('bound') != 'True':
1971
config.set_user_option('bound', 'False')
1974
self._set_config_location('bound_location', location,
1976
config.set_user_option('bound', 'True')
1979
def _get_bound_location(self, bound):
1980
"""Return the bound location in the config file.
1982
Return None if the bound parameter does not match"""
1983
config = self.get_config()
1984
config_bound = (config.get_user_option('bound') == 'True')
1985
if config_bound != bound:
1987
return self._get_config_location('bound_location', config=config)
1989
def get_bound_location(self):
1990
"""See Branch.set_push_location."""
1991
return self._get_bound_location(True)
1993
def get_old_bound_location(self):
1994
"""See Branch.get_old_bound_location"""
1995
return self._get_bound_location(False)
1997
def set_append_revisions_only(self, enabled):
2002
self.get_config().set_user_option('append_revisions_only', value)
2004
def _get_append_revisions_only(self):
2005
value = self.get_config().get_user_option('append_revisions_only')
2006
return value == 'True'
2008
def _synchronize_history(self, destination, revision_id):
2009
"""Synchronize last revision and revision history between branches.
2011
This version is most efficient when the destination is also a
2012
BzrBranch6, but works for BzrBranch5, as long as the destination's
2013
repository contains all the lefthand ancestors of the intended
2014
last_revision. If not, set_last_revision_info will fail.
2016
:param destination: The branch to copy the history into
2017
:param revision_id: The revision-id to truncate history at. May
2018
be None to copy complete history.
2020
if revision_id is None:
2021
revno, revision_id = self.last_revision_info()
2023
revno = self.revision_id_to_revno(revision_id)
2024
destination.set_last_revision_info(revno, revision_id)
2026
def _make_tags(self):
2027
return BasicTags(self)
2030
class BranchTestProviderAdapter(object):
2031
"""A tool to generate a suite testing multiple branch formats at once.
2033
This is done by copying the test once for each transport and injecting
2034
the transport_server, transport_readonly_server, and branch_format
2035
classes into each copy. Each copy is also given a new id() to make it
2039
def __init__(self, transport_server, transport_readonly_server, formats):
2040
self._transport_server = transport_server
2041
self._transport_readonly_server = transport_readonly_server
2042
self._formats = formats
2044
def adapt(self, test):
2045
result = TestSuite()
2046
for branch_format, bzrdir_format in self._formats:
2047
new_test = deepcopy(test)
2048
new_test.transport_server = self._transport_server
2049
new_test.transport_readonly_server = self._transport_readonly_server
2050
new_test.bzrdir_format = bzrdir_format
2051
new_test.branch_format = branch_format
2052
def make_new_test_id():
2053
# the format can be either a class or an instance
2054
name = getattr(branch_format, '__name__',
2055
branch_format.__class__.__name__)
2056
new_id = "%s(%s)" % (new_test.id(), name)
2057
return lambda: new_id
2058
new_test.id = make_new_test_id()
2059
result.addTest(new_test)
2063
######################################################################
2064
# results of operations
2067
class _Result(object):
2069
def _show_tag_conficts(self, to_file):
2070
if not getattr(self, 'tag_conflicts', None):
2072
to_file.write('Conflicting tags:\n')
2073
for name, value1, value2 in self.tag_conflicts:
2074
to_file.write(' %s\n' % (name, ))
2077
class PullResult(_Result):
2078
"""Result of a Branch.pull operation.
2080
:ivar old_revno: Revision number before pull.
2081
:ivar new_revno: Revision number after pull.
2082
:ivar old_revid: Tip revision id before pull.
2083
:ivar new_revid: Tip revision id after pull.
2084
:ivar source_branch: Source (local) branch object.
2085
:ivar master_branch: Master branch of the target, or None.
2086
:ivar target_branch: Target/destination branch object.
2090
# DEPRECATED: pull used to return the change in revno
2091
return self.new_revno - self.old_revno
2093
def report(self, to_file):
2094
if self.old_revid == self.new_revid:
2095
to_file.write('No revisions to pull.\n')
2097
to_file.write('Now on revision %d.\n' % self.new_revno)
2098
self._show_tag_conficts(to_file)
2101
class PushResult(_Result):
2102
"""Result of a Branch.push operation.
2104
:ivar old_revno: Revision number before push.
2105
:ivar new_revno: Revision number after push.
2106
:ivar old_revid: Tip revision id before push.
2107
:ivar new_revid: Tip revision id after push.
2108
:ivar source_branch: Source branch object.
2109
:ivar master_branch: Master branch of the target, or None.
2110
:ivar target_branch: Target/destination branch object.
2114
# DEPRECATED: push used to return the change in revno
2115
return self.new_revno - self.old_revno
2117
def report(self, to_file):
2118
"""Write a human-readable description of the result."""
2119
if self.old_revid == self.new_revid:
2120
to_file.write('No new revisions to push.\n')
2122
to_file.write('Pushed up to revision %d.\n' % self.new_revno)
2123
self._show_tag_conficts(to_file)
2126
class BranchCheckResult(object):
2127
"""Results of checking branch consistency.
2132
def __init__(self, branch):
2133
self.branch = branch
2135
def report_results(self, verbose):
2136
"""Report the check results via trace.note.
2138
:param verbose: Requests more detailed display of what was checked,
2141
note('checked branch %s format %s',
2143
self.branch._format)
2146
class Converter5to6(object):
2147
"""Perform an in-place upgrade of format 5 to format 6"""
2149
def convert(self, branch):
2150
# Data for 5 and 6 can peacefully coexist.
2151
format = BzrBranchFormat6()
2152
new_branch = format.open(branch.bzrdir, _found=True)
2154
# Copy source data into target
2155
new_branch.set_last_revision_info(*branch.last_revision_info())
2156
new_branch.set_parent(branch.get_parent())
2157
new_branch.set_bound_location(branch.get_bound_location())
2158
new_branch.set_push_location(branch.get_push_location())
2160
# New branch has no tags by default
2161
new_branch.tags._set_tag_dict({})
2163
# Copying done; now update target format
2164
new_branch.control_files.put_utf8('format',
2165
format.get_format_string())
2167
# Clean up old files
2168
new_branch.control_files._transport.delete('revision-history')
2170
branch.set_parent(None)
2173
branch.set_bound_location(None)
added
removed
bzrlib/branch.py
