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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 bzrlib.lazy_import import lazy_import
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lazy_import(globals(), """
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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
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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.hooks import Hooks
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from bzrlib.symbol_versioning import (deprecated_method,
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from bzrlib.trace import mutter, mutter_callsite, note, is_quiet
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BZR_BRANCH_FORMAT_4 = "Bazaar-NG branch, format 0.0.4\n"
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BZR_BRANCH_FORMAT_5 = "Bazaar-NG branch, format 5\n"
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BZR_BRANCH_FORMAT_6 = "Bazaar Branch Format 6 (bzr 0.15)\n"
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# TODO: Maybe include checks for common corruption of newlines, etc?
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# TODO: Some operations like log might retrieve the same revisions
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# repeatedly to calculate deltas. We could perhaps have a weakref
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# cache in memory to make this faster. In general anything can be
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# cached in memory between lock and unlock operations. .. nb thats
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# what the transaction identity map provides
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######################################################################
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"""Branch holding a history of revisions.
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Base directory/url of the branch.
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hooks: An instance of BranchHooks.
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# this is really an instance variable - FIXME move it there
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# override this to set the strategy for storing tags
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return DisabledTags(self)
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def __init__(self, *ignored, **ignored_too):
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self.tags = self._make_tags()
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self._revision_history_cache = None
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self._revision_id_to_revno_cache = None
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"""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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def open(base, _unsupported=False, possible_transports=None):
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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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possible_transports=possible_transports)
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return control.open_branch(_unsupported)
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def open_from_transport(transport, _unsupported=False):
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"""Open the branch rooted at transport"""
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control = bzrdir.BzrDir.open_from_transport(transport, _unsupported)
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return control.open_branch(_unsupported)
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def open_containing(url, possible_transports=None):
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"""Open an existing branch which contains url.
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This probes for a branch at url, and searches upwards from there.
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Basically we keep looking up until we find the control directory or
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run into the root. If there isn't one, raises NotBranchError.
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If there is one and it is either an unrecognised format or an unsupported
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format, UnknownFormatError or UnsupportedFormatError are raised.
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If there is one, it is returned, along with the unused portion of url.
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control, relpath = bzrdir.BzrDir.open_containing(url,
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return control.open_branch(), relpath
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def get_config(self):
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return BranchConfig(self)
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return self.get_config().get_nickname()
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def _set_nick(self, nick):
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self.get_config().set_user_option('nickname', nick, warn_masked=True)
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nick = property(_get_nick, _set_nick)
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raise NotImplementedError(self.is_locked)
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def lock_write(self):
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raise NotImplementedError(self.lock_write)
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raise NotImplementedError(self.lock_read)
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raise NotImplementedError(self.unlock)
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def peek_lock_mode(self):
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"""Return lock mode for the Branch: 'r', 'w' or None"""
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raise NotImplementedError(self.peek_lock_mode)
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def get_physical_lock_status(self):
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raise NotImplementedError(self.get_physical_lock_status)
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def get_revision_id_to_revno_map(self):
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"""Return the revision_id => dotted revno map.
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This will be regenerated on demand, but will be cached.
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:return: A dictionary mapping revision_id => dotted revno.
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This dictionary should not be modified by the caller.
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if self._revision_id_to_revno_cache is not None:
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mapping = self._revision_id_to_revno_cache
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mapping = self._gen_revno_map()
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self._cache_revision_id_to_revno(mapping)
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# TODO: jam 20070417 Since this is being cached, should we be returning
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# I would rather not, and instead just declare that users should not
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# modify the return value.
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def _gen_revno_map(self):
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"""Create a new mapping from revision ids to dotted revnos.
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Dotted revnos are generated based on the current tip in the revision
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This is the worker function for get_revision_id_to_revno_map, which
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just caches the return value.
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:return: A dictionary mapping revision_id => dotted revno.
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last_revision = self.last_revision()
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revision_graph = repository._old_get_graph(self.repository,
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merge_sorted_revisions = tsort.merge_sort(
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revision_id_to_revno = dict((rev_id, revno)
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for seq_num, rev_id, depth, revno, end_of_merge
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in merge_sorted_revisions)
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return revision_id_to_revno
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def leave_lock_in_place(self):
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"""Tell this branch object not to release the physical lock when this
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If lock_write doesn't return a token, then this method is not supported.
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self.control_files.leave_in_place()
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def dont_leave_lock_in_place(self):
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"""Tell this branch object to release the physical lock when this
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object is unlocked, even if it didn't originally acquire it.
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If lock_write doesn't return a token, then this method is not supported.
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self.control_files.dont_leave_in_place()
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def abspath(self, name):
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"""Return absolute filename for something in the branch
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XXX: Robert Collins 20051017 what is this used for? why is it a branch
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method and not a tree method.
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raise NotImplementedError(self.abspath)
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def bind(self, other):
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"""Bind the local branch the other branch.
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:param other: The branch to bind to
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raise errors.UpgradeRequired(self.base)
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def fetch(self, from_branch, last_revision=None, pb=None):
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"""Copy revisions from from_branch into this branch.
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:param from_branch: Where to copy from.
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:param last_revision: What revision to stop at (None for at the end
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:param pb: An optional progress bar to use.
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Returns the copied revision count and the failed revisions in a tuple:
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if self.base == from_branch.base:
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nested_pb = ui.ui_factory.nested_progress_bar()
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from_branch.lock_read()
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if last_revision is None:
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pb.update('get source history')
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last_revision = from_branch.last_revision()
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last_revision = _mod_revision.ensure_null(last_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, possible_transports=None):
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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 errors.InvalidRevisionNumber(revno)
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return self.repository.get_revision_delta(rh[revno-1])
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@deprecated_method(zero_sixteen)
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def get_root_id(self):
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"""Return the id of this branches root
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Deprecated: branches don't have root ids-- trees do.
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Use basis_tree().get_root_id() instead.
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raise NotImplementedError(self.get_root_id)
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def print_file(self, file, revision_id):
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"""Print `file` to stdout."""
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raise NotImplementedError(self.print_file)
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def set_revision_history(self, rev_history):
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raise NotImplementedError(self.set_revision_history)
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def _cache_revision_history(self, rev_history):
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"""Set the cached revision history to rev_history.
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The revision_history method will use this cache to avoid regenerating
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the revision history.
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This API is semi-public; it only for use by subclasses, all other code
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should consider it to be private.
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self._revision_history_cache = rev_history
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def _cache_revision_id_to_revno(self, revision_id_to_revno):
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"""Set the cached revision_id => revno map to revision_id_to_revno.
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This API is semi-public; it only for use by subclasses, all other code
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should consider it to be private.
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self._revision_id_to_revno_cache = revision_id_to_revno
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def _clear_cached_state(self):
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"""Clear any cached data on this branch, e.g. cached revision history.
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This means the next call to revision_history will need to call
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_gen_revision_history.
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This API is semi-public; it only for use by subclasses, all other code
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should consider it to be private.
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self._revision_history_cache = None
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self._revision_id_to_revno_cache = None
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def _gen_revision_history(self):
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"""Return sequence of revision hashes on to this branch.
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Unlike revision_history, this method always regenerates or rereads the
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revision history, i.e. it does not cache the result, so repeated calls
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Concrete subclasses should override this instead of revision_history so
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that subclasses do not need to deal with caching logic.
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This API is semi-public; it only for use by subclasses, all other code
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should consider it to be private.
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raise NotImplementedError(self._gen_revision_history)
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def revision_history(self):
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"""Return sequence of revision ids on this branch.
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This method will cache the revision history for as long as it is safe to
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if 'evil' in debug.debug_flags:
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mutter_callsite(3, "revision_history scales with history.")
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if self._revision_history_cache is not None:
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history = self._revision_history_cache
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history = self._gen_revision_history()
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self._cache_revision_history(history)
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"""Return current revision number for this branch.
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That is equivalent to the number of revisions committed to
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return self.last_revision_info()[0]
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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 NULL_REVISION."""
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return self.last_revision_info()[1]
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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 errors.DivergedBranches(self, other)
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if stop_revision is None:
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stop_revision = other_len
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assert isinstance(stop_revision, int)
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if stop_revision > other_len:
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raise errors.NoSuchRevision(self, stop_revision)
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return other_history[self_len:stop_revision]
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def update_revisions(self, other, stop_revision=None):
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"""Pull in new perfect-fit revisions.
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:param other: Another Branch to pull from
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:param stop_revision: Updated until the given revision
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raise NotImplementedError(self.update_revisions)
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def revision_id_to_revno(self, revision_id):
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"""Given a revision id, return its revno"""
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if _mod_revision.is_null(revision_id):
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history = self.revision_history()
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return history.index(revision_id) + 1
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raise errors.NoSuchRevision(self, revision_id)
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def get_rev_id(self, revno, history=None):
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"""Find the revision id of the specified revno."""
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return _mod_revision.NULL_REVISION
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history = self.revision_history()
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if revno <= 0 or revno > len(history):
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raise errors.NoSuchRevision(self, revno)
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return history[revno - 1]
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def pull(self, source, overwrite=False, stop_revision=None,
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possible_transports=None):
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"""Mirror source into this branch.
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This branch is considered to be 'local', having low latency.
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:returns: PullResult instance
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raise NotImplementedError(self.pull)
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def push(self, target, overwrite=False, stop_revision=None):
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"""Mirror this branch into target.
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This branch is considered to be 'local', having low latency.
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raise NotImplementedError(self.push)
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def basis_tree(self):
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"""Return `Tree` object for last revision."""
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return self.repository.revision_tree(self.last_revision())
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def rename_one(self, from_rel, to_rel):
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This can change the directory or the filename or both.
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raise NotImplementedError(self.rename_one)
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def move(self, from_paths, to_name):
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to_name must exist as a versioned directory.
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If to_name exists and is a directory, the files are moved into
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it, keeping their old names. If it is a directory,
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Note that to_name is only the last component of the new name;
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this doesn't change the directory.
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This returns a list of (from_path, to_path) pairs for each
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raise NotImplementedError(self.move)
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def get_parent(self):
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"""Return the parent location of the branch.
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This is the default location for push/pull/missing. The usual
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pattern is that the user can override it by specifying a
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raise NotImplementedError(self.get_parent)
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def _set_config_location(self, name, url, config=None,
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make_relative=False):
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config = self.get_config()
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url = urlutils.relative_url(self.base, url)
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config.set_user_option(name, url, warn_masked=True)
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def _get_config_location(self, name, config=None):
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config = self.get_config()
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location = config.get_user_option(name)
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def get_submit_branch(self):
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"""Return the submit location of the branch.
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This is the default location for bundle. The usual
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pattern is that the user can override it by specifying a
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return self.get_config().get_user_option('submit_branch')
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def set_submit_branch(self, location):
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"""Return the submit location of the branch.
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This is the default location for bundle. The usual
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pattern is that the user can override it by specifying a
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self.get_config().set_user_option('submit_branch', location,
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def get_public_branch(self):
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"""Return the public location of the branch.
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This is is used by merge directives.
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return self._get_config_location('public_branch')
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def set_public_branch(self, location):
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"""Return the submit location of the branch.
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This is the default location for bundle. The usual
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pattern is that the user can override it by specifying a
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self._set_config_location('public_branch', location)
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def get_push_location(self):
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"""Return the None or the location to push this branch to."""
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push_loc = self.get_config().get_user_option('push_location')
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def set_push_location(self, location):
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"""Set a new push location for this branch."""
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raise NotImplementedError(self.set_push_location)
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def set_parent(self, url):
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raise NotImplementedError(self.set_parent)
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"""Synchronise this branch with the master branch if any.
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:return: None or the last_revision pivoted out during the update.
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def check_revno(self, revno):
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Check whether a revno corresponds to any revision.
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Zero (the NULL revision) is considered valid.
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self.check_real_revno(revno)
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def check_real_revno(self, revno):
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Check whether a revno corresponds to a real revision.
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Zero (the NULL revision) is considered invalid
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if revno < 1 or revno > self.revno():
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raise errors.InvalidRevisionNumber(revno)
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def clone(self, to_bzrdir, revision_id=None):
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"""Clone this branch into to_bzrdir preserving all semantic values.
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revision_id: if not None, the revision history in the new branch will
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be truncated to end with revision_id.
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result = self._format.initialize(to_bzrdir)
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self.copy_content_into(result, revision_id=revision_id)
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def sprout(self, to_bzrdir, revision_id=None):
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"""Create a new line of development from the branch, into to_bzrdir.
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revision_id: if not None, the revision history in the new branch will
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be truncated to end with revision_id.
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result = self._format.initialize(to_bzrdir)
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self.copy_content_into(result, revision_id=revision_id)
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result.set_parent(self.bzrdir.root_transport.base)
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def _synchronize_history(self, destination, revision_id):
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"""Synchronize last revision and revision history between branches.
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This version is most efficient when the destination is also a
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BzrBranch5, but works for BzrBranch6 as long as the revision
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history is the true lefthand parent history, and all of the revisions
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are in the destination's repository. If not, set_revision_history
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:param destination: The branch to copy the history into
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:param revision_id: The revision-id to truncate history at. May
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be None to copy complete history.
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if revision_id == _mod_revision.NULL_REVISION:
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new_history = self.revision_history()
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if revision_id is not None and new_history != []:
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new_history = new_history[:new_history.index(revision_id) + 1]
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rev = self.repository.get_revision(revision_id)
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new_history = rev.get_history(self.repository)[1:]
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destination.set_revision_history(new_history)
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def copy_content_into(self, destination, revision_id=None):
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"""Copy the content of self into destination.
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revision_id: if not None, the revision history in the new branch will
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be truncated to end with revision_id.
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self._synchronize_history(destination, revision_id)
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parent = self.get_parent()
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except errors.InaccessibleParent, e:
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mutter('parent was not accessible to copy: %s', e)
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destination.set_parent(parent)
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self.tags.merge_to(destination.tags)
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"""Check consistency of the branch.
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In particular this checks that revisions given in the revision-history
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do actually match up in the revision graph, and that they're all
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present in the repository.
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Callers will typically also want to check the repository.
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:return: A BranchCheckResult.
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mainline_parent_id = None
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for revision_id in self.revision_history():
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revision = self.repository.get_revision(revision_id)
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except errors.NoSuchRevision, e:
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raise errors.BzrCheckError("mainline revision {%s} not in repository"
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# In general the first entry on the revision history has no parents.
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# But it's not illegal for it to have parents listed; this can happen
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# in imports from Arch when the parents weren't reachable.
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if mainline_parent_id is not None:
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if mainline_parent_id not in revision.parent_ids:
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raise errors.BzrCheckError("previous revision {%s} not listed among "
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% (mainline_parent_id, revision_id))
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mainline_parent_id = revision_id
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return BranchCheckResult(self)
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def _get_checkout_format(self):
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"""Return the most suitable metadir for a checkout of this branch.
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Weaves are used if this branch's repository uses weaves.
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if isinstance(self.bzrdir, bzrdir.BzrDirPreSplitOut):
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from bzrlib.repofmt import weaverepo
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format = bzrdir.BzrDirMetaFormat1()
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format.repository_format = weaverepo.RepositoryFormat7()
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format = self.repository.bzrdir.checkout_metadir()
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format.set_branch_format(self._format)
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def create_checkout(self, to_location, revision_id=None,
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lightweight=False, accelerator_tree=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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:param accelerator_tree: A tree which can be used for retrieving file
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contents more quickly than the revision tree, i.e. a workingtree.
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The revision tree will be used for cases where accelerator_tree's
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content is different.
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:param hardlink: If true, hard-link files from accelerator_tree,
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:return: The tree of the created checkout
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t = transport.get_transport(to_location)
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format = self._get_checkout_format()
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checkout = format.initialize_on_transport(t)
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from_branch = BranchReferenceFormat().initialize(checkout, self)
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format = self._get_checkout_format()
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checkout_branch = bzrdir.BzrDir.create_branch_convenience(
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to_location, force_new_tree=False, format=format)
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checkout = checkout_branch.bzrdir
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checkout_branch.bind(self)
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# pull up to the specified revision_id to set the initial
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# branch tip correctly, and seed it with history.
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checkout_branch.pull(self, stop_revision=revision_id)
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tree = checkout.create_workingtree(revision_id,
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from_branch=from_branch,
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accelerator_tree=accelerator_tree,
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basis_tree = tree.basis_tree()
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basis_tree.lock_read()
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for path, file_id in basis_tree.iter_references():
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reference_parent = self.reference_parent(file_id, path)
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reference_parent.create_checkout(tree.abspath(path),
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basis_tree.get_reference_revision(file_id, path),
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def reference_parent(self, file_id, path):
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"""Return the parent branch for a tree-reference file_id
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:param file_id: The file_id of the tree reference
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:param path: The path of the file_id in the tree
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:return: A branch associated with the file_id
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# FIXME should provide multiple branches, based on config
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return Branch.open(self.bzrdir.root_transport.clone(path).base)
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def supports_tags(self):
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return self._format.supports_tags()
799
class BranchFormat(object):
800
"""An encapsulation of the initialization and open routines for a format.
802
Formats provide three things:
803
* An initialization routine,
807
Formats are placed in an dict by their format string for reference
808
during branch opening. Its not required that these be instances, they
809
can be classes themselves with class methods - it simply depends on
810
whether state is needed for a given format or not.
812
Once a format is deprecated, just deprecate the initialize and open
813
methods on the format class. Do not deprecate the object, as the
814
object will be created every time regardless.
817
_default_format = None
818
"""The default format used for new branches."""
821
"""The known formats."""
823
def __eq__(self, other):
824
return self.__class__ is other.__class__
826
def __ne__(self, other):
827
return not (self == other)
830
def find_format(klass, a_bzrdir):
831
"""Return the format for the branch object in a_bzrdir."""
833
transport = a_bzrdir.get_branch_transport(None)
834
format_string = transport.get("format").read()
835
return klass._formats[format_string]
836
except errors.NoSuchFile:
837
raise errors.NotBranchError(path=transport.base)
839
raise errors.UnknownFormatError(format=format_string, kind='branch')
842
def get_default_format(klass):
843
"""Return the current default format."""
844
return klass._default_format
846
def get_reference(self, a_bzrdir):
847
"""Get the target reference of the branch in a_bzrdir.
849
format probing must have been completed before calling
850
this method - it is assumed that the format of the branch
851
in a_bzrdir is correct.
853
:param a_bzrdir: The bzrdir to get the branch data from.
854
:return: None if the branch is not a reference branch.
859
def set_reference(self, a_bzrdir, to_branch):
860
"""Set the target reference of the branch in a_bzrdir.
862
format probing must have been completed before calling
863
this method - it is assumed that the format of the branch
864
in a_bzrdir is correct.
866
:param a_bzrdir: The bzrdir to set the branch reference for.
867
:param to_branch: branch that the checkout is to reference
869
raise NotImplementedError(self.set_reference)
871
def get_format_string(self):
872
"""Return the ASCII format string that identifies this format."""
873
raise NotImplementedError(self.get_format_string)
875
def get_format_description(self):
876
"""Return the short format description for this format."""
877
raise NotImplementedError(self.get_format_description)
879
def _initialize_helper(self, a_bzrdir, utf8_files, lock_type='metadir',
881
"""Initialize a branch in a bzrdir, with specified files
883
:param a_bzrdir: The bzrdir to initialize the branch in
884
:param utf8_files: The files to create as a list of
885
(filename, content) tuples
886
:param set_format: If True, set the format with
887
self.get_format_string. (BzrBranch4 has its format set
889
:return: a branch in this format
891
mutter('creating branch %r in %s', self, a_bzrdir.transport.base)
892
branch_transport = a_bzrdir.get_branch_transport(self)
894
'metadir': ('lock', lockdir.LockDir),
895
'branch4': ('branch-lock', lockable_files.TransportLock),
897
lock_name, lock_class = lock_map[lock_type]
898
control_files = lockable_files.LockableFiles(branch_transport,
899
lock_name, lock_class)
900
control_files.create_lock()
901
control_files.lock_write()
903
control_files.put_utf8('format', self.get_format_string())
905
for file, content in utf8_files:
906
control_files.put_utf8(file, content)
908
control_files.unlock()
909
return self.open(a_bzrdir, _found=True)
911
def initialize(self, a_bzrdir):
912
"""Create a branch of this format in a_bzrdir."""
913
raise NotImplementedError(self.initialize)
915
def is_supported(self):
916
"""Is this format supported?
918
Supported formats can be initialized and opened.
919
Unsupported formats may not support initialization or committing or
920
some other features depending on the reason for not being supported.
924
def open(self, a_bzrdir, _found=False):
925
"""Return the branch object for a_bzrdir
927
_found is a private parameter, do not use it. It is used to indicate
928
if format probing has already be done.
930
raise NotImplementedError(self.open)
933
def register_format(klass, format):
934
klass._formats[format.get_format_string()] = format
937
def set_default_format(klass, format):
938
klass._default_format = format
941
def unregister_format(klass, format):
942
assert klass._formats[format.get_format_string()] is format
943
del klass._formats[format.get_format_string()]
946
return self.get_format_string().rstrip()
948
def supports_tags(self):
949
"""True if this format supports tags stored in the branch"""
950
return False # by default
952
# XXX: Probably doesn't really belong here -- mbp 20070212
953
def _initialize_control_files(self, a_bzrdir, utf8_files, lock_filename,
955
branch_transport = a_bzrdir.get_branch_transport(self)
956
control_files = lockable_files.LockableFiles(branch_transport,
957
lock_filename, lock_class)
958
control_files.create_lock()
959
control_files.lock_write()
961
for filename, content in utf8_files:
962
control_files.put_utf8(filename, content)
964
control_files.unlock()
967
class BranchHooks(Hooks):
968
"""A dictionary mapping hook name to a list of callables for branch hooks.
970
e.g. ['set_rh'] Is the list of items to be called when the
971
set_revision_history function is invoked.
975
"""Create the default hooks.
977
These are all empty initially, because by default nothing should get
981
# Introduced in 0.15:
982
# invoked whenever the revision history has been set
983
# with set_revision_history. The api signature is
984
# (branch, revision_history), and the branch will
987
# invoked after a push operation completes.
988
# the api signature is
990
# containing the members
991
# (source, local, master, old_revno, old_revid, new_revno, new_revid)
992
# where local is the local target branch or None, master is the target
993
# master branch, and the rest should be self explanatory. The source
994
# is read locked and the target branches write locked. Source will
995
# be the local low-latency branch.
996
self['post_push'] = []
997
# invoked after a pull operation completes.
998
# the api signature is
1000
# containing the members
1001
# (source, local, master, old_revno, old_revid, new_revno, new_revid)
1002
# where local is the local branch or None, master is the target
1003
# master branch, and the rest should be self explanatory. The source
1004
# is read locked and the target branches write locked. The local
1005
# branch is the low-latency branch.
1006
self['post_pull'] = []
1007
# invoked before a commit operation takes place.
1008
# the api signature is
1009
# (local, master, old_revno, old_revid, future_revno, future_revid,
1010
# tree_delta, future_tree).
1011
# old_revid is NULL_REVISION for the first commit to a branch
1012
# tree_delta is a TreeDelta object describing changes from the basis
1013
# revision, hooks MUST NOT modify this delta
1014
# future_tree is an in-memory tree obtained from
1015
# CommitBuilder.revision_tree() and hooks MUST NOT modify this tree
1016
self['pre_commit'] = []
1017
# invoked after a commit operation completes.
1018
# the api signature is
1019
# (local, master, old_revno, old_revid, new_revno, new_revid)
1020
# old_revid is NULL_REVISION for the first commit to a branch.
1021
self['post_commit'] = []
1022
# invoked after a uncommit operation completes.
1023
# the api signature is
1024
# (local, master, old_revno, old_revid, new_revno, new_revid) where
1025
# local is the local branch or None, master is the target branch,
1026
# and an empty branch recieves new_revno of 0, new_revid of None.
1027
self['post_uncommit'] = []
1030
# install the default hooks into the Branch class.
1031
Branch.hooks = BranchHooks()
1034
class BzrBranchFormat4(BranchFormat):
1035
"""Bzr branch format 4.
1038
- a revision-history file.
1039
- a branch-lock lock file [ to be shared with the bzrdir ]
1042
def get_format_description(self):
1043
"""See BranchFormat.get_format_description()."""
1044
return "Branch format 4"
1046
def initialize(self, a_bzrdir):
1047
"""Create a branch of this format in a_bzrdir."""
1048
utf8_files = [('revision-history', ''),
1049
('branch-name', ''),
1051
return self._initialize_helper(a_bzrdir, utf8_files,
1052
lock_type='branch4', set_format=False)
1055
super(BzrBranchFormat4, self).__init__()
1056
self._matchingbzrdir = bzrdir.BzrDirFormat6()
1058
def open(self, a_bzrdir, _found=False):
1059
"""Return the branch object for a_bzrdir
1061
_found is a private parameter, do not use it. It is used to indicate
1062
if format probing has already be done.
1065
# we are being called directly and must probe.
1066
raise NotImplementedError
1067
return BzrBranch(_format=self,
1068
_control_files=a_bzrdir._control_files,
1070
_repository=a_bzrdir.open_repository())
1073
return "Bazaar-NG branch format 4"
1076
class BzrBranchFormat5(BranchFormat):
1077
"""Bzr branch format 5.
1080
- a revision-history file.
1082
- a lock dir guarding the branch itself
1083
- all of this stored in a branch/ subdirectory
1084
- works with shared repositories.
1086
This format is new in bzr 0.8.
1089
def get_format_string(self):
1090
"""See BranchFormat.get_format_string()."""
1091
return "Bazaar-NG branch format 5\n"
1093
def get_format_description(self):
1094
"""See BranchFormat.get_format_description()."""
1095
return "Branch format 5"
1097
def initialize(self, a_bzrdir):
1098
"""Create a branch of this format in a_bzrdir."""
1099
utf8_files = [('revision-history', ''),
1100
('branch-name', ''),
1102
return self._initialize_helper(a_bzrdir, utf8_files)
1105
super(BzrBranchFormat5, self).__init__()
1106
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
1108
def open(self, a_bzrdir, _found=False):
1109
"""Return the branch object for a_bzrdir
1111
_found is a private parameter, do not use it. It is used to indicate
1112
if format probing has already be done.
1115
format = BranchFormat.find_format(a_bzrdir)
1116
assert format.__class__ == self.__class__
1118
transport = a_bzrdir.get_branch_transport(None)
1119
control_files = lockable_files.LockableFiles(transport, 'lock',
1121
return BzrBranch5(_format=self,
1122
_control_files=control_files,
1124
_repository=a_bzrdir.find_repository())
1125
except errors.NoSuchFile:
1126
raise errors.NotBranchError(path=transport.base)
1129
class BzrBranchFormat6(BzrBranchFormat5):
1130
"""Branch format with last-revision and tags.
1132
Unlike previous formats, this has no explicit revision history. Instead,
1133
this just stores the last-revision, and the left-hand history leading
1134
up to there is the history.
1136
This format was introduced in bzr 0.15
1137
and became the default in 0.91.
1140
def get_format_string(self):
1141
"""See BranchFormat.get_format_string()."""
1142
return "Bazaar Branch Format 6 (bzr 0.15)\n"
1144
def get_format_description(self):
1145
"""See BranchFormat.get_format_description()."""
1146
return "Branch format 6"
1148
def initialize(self, a_bzrdir):
1149
"""Create a branch of this format in a_bzrdir."""
1150
utf8_files = [('last-revision', '0 null:\n'),
1151
('branch.conf', ''),
1154
return self._initialize_helper(a_bzrdir, utf8_files)
1156
def open(self, a_bzrdir, _found=False):
1157
"""Return the branch object for a_bzrdir
1159
_found is a private parameter, do not use it. It is used to indicate
1160
if format probing has already be done.
1163
format = BranchFormat.find_format(a_bzrdir)
1164
assert format.__class__ == self.__class__
1165
transport = a_bzrdir.get_branch_transport(None)
1166
control_files = lockable_files.LockableFiles(transport, 'lock',
1168
return BzrBranch6(_format=self,
1169
_control_files=control_files,
1171
_repository=a_bzrdir.find_repository())
1173
def supports_tags(self):
1177
class BranchReferenceFormat(BranchFormat):
1178
"""Bzr branch reference format.
1180
Branch references are used in implementing checkouts, they
1181
act as an alias to the real branch which is at some other url.
1188
def get_format_string(self):
1189
"""See BranchFormat.get_format_string()."""
1190
return "Bazaar-NG Branch Reference Format 1\n"
1192
def get_format_description(self):
1193
"""See BranchFormat.get_format_description()."""
1194
return "Checkout reference format 1"
1196
def get_reference(self, a_bzrdir):
1197
"""See BranchFormat.get_reference()."""
1198
transport = a_bzrdir.get_branch_transport(None)
1199
return transport.get('location').read()
1201
def set_reference(self, a_bzrdir, to_branch):
1202
"""See BranchFormat.set_reference()."""
1203
transport = a_bzrdir.get_branch_transport(None)
1204
location = transport.put_bytes('location', to_branch.base)
1206
def initialize(self, a_bzrdir, target_branch=None):
1207
"""Create a branch of this format in a_bzrdir."""
1208
if target_branch is None:
1209
# this format does not implement branch itself, thus the implicit
1210
# creation contract must see it as uninitializable
1211
raise errors.UninitializableFormat(self)
1212
mutter('creating branch reference in %s', a_bzrdir.transport.base)
1213
branch_transport = a_bzrdir.get_branch_transport(self)
1214
branch_transport.put_bytes('location',
1215
target_branch.bzrdir.root_transport.base)
1216
branch_transport.put_bytes('format', self.get_format_string())
1218
a_bzrdir, _found=True,
1219
possible_transports=[target_branch.bzrdir.root_transport])
1222
super(BranchReferenceFormat, self).__init__()
1223
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
1225
def _make_reference_clone_function(format, a_branch):
1226
"""Create a clone() routine for a branch dynamically."""
1227
def clone(to_bzrdir, revision_id=None):
1228
"""See Branch.clone()."""
1229
return format.initialize(to_bzrdir, a_branch)
1230
# cannot obey revision_id limits when cloning a reference ...
1231
# FIXME RBC 20060210 either nuke revision_id for clone, or
1232
# emit some sort of warning/error to the caller ?!
1235
def open(self, a_bzrdir, _found=False, location=None,
1236
possible_transports=None):
1237
"""Return the branch that the branch reference in a_bzrdir points at.
1239
_found is a private parameter, do not use it. It is used to indicate
1240
if format probing has already be done.
1243
format = BranchFormat.find_format(a_bzrdir)
1244
assert format.__class__ == self.__class__
1245
if location is None:
1246
location = self.get_reference(a_bzrdir)
1247
real_bzrdir = bzrdir.BzrDir.open(
1248
location, possible_transports=possible_transports)
1249
result = real_bzrdir.open_branch()
1250
# this changes the behaviour of result.clone to create a new reference
1251
# rather than a copy of the content of the branch.
1252
# I did not use a proxy object because that needs much more extensive
1253
# testing, and we are only changing one behaviour at the moment.
1254
# If we decide to alter more behaviours - i.e. the implicit nickname
1255
# then this should be refactored to introduce a tested proxy branch
1256
# and a subclass of that for use in overriding clone() and ....
1258
result.clone = self._make_reference_clone_function(result)
1262
# formats which have no format string are not discoverable
1263
# and not independently creatable, so are not registered.
1264
__format5 = BzrBranchFormat5()
1265
__format6 = BzrBranchFormat6()
1266
BranchFormat.register_format(__format5)
1267
BranchFormat.register_format(BranchReferenceFormat())
1268
BranchFormat.register_format(__format6)
1269
BranchFormat.set_default_format(__format6)
1270
_legacy_formats = [BzrBranchFormat4(),
1273
class BzrBranch(Branch):
1274
"""A branch stored in the actual filesystem.
1276
Note that it's "local" in the context of the filesystem; it doesn't
1277
really matter if it's on an nfs/smb/afs/coda/... share, as long as
1278
it's writable, and can be accessed via the normal filesystem API.
1281
def __init__(self, _format=None,
1282
_control_files=None, a_bzrdir=None, _repository=None):
1283
"""Create new branch object at a particular location."""
1284
Branch.__init__(self)
1285
if a_bzrdir is None:
1286
raise ValueError('a_bzrdir must be supplied')
1288
self.bzrdir = a_bzrdir
1289
# self._transport used to point to the directory containing the
1290
# control directory, but was not used - now it's just the transport
1291
# for the branch control files. mbp 20070212
1292
self._base = self.bzrdir.transport.clone('..').base
1293
self._format = _format
1294
if _control_files is None:
1295
raise ValueError('BzrBranch _control_files is None')
1296
self.control_files = _control_files
1297
self._transport = _control_files._transport
1298
self.repository = _repository
1301
return '%s(%r)' % (self.__class__.__name__, self.base)
1305
def _get_base(self):
1306
"""Returns the directory containing the control directory."""
1309
base = property(_get_base, doc="The URL for the root of this branch.")
1311
def abspath(self, name):
1312
"""See Branch.abspath."""
1313
return self.control_files._transport.abspath(name)
1316
@deprecated_method(zero_sixteen)
1318
def get_root_id(self):
1319
"""See Branch.get_root_id."""
1320
tree = self.repository.revision_tree(self.last_revision())
1321
return tree.get_root_id()
1323
def is_locked(self):
1324
return self.control_files.is_locked()
1326
def lock_write(self, token=None):
1327
repo_token = self.repository.lock_write()
1329
token = self.control_files.lock_write(token=token)
1331
self.repository.unlock()
1335
def lock_read(self):
1336
self.repository.lock_read()
1338
self.control_files.lock_read()
1340
self.repository.unlock()
1344
# TODO: test for failed two phase locks. This is known broken.
1346
self.control_files.unlock()
1348
self.repository.unlock()
1349
if not self.control_files.is_locked():
1350
# we just released the lock
1351
self._clear_cached_state()
1353
def peek_lock_mode(self):
1354
if self.control_files._lock_count == 0:
1357
return self.control_files._lock_mode
1359
def get_physical_lock_status(self):
1360
return self.control_files.get_physical_lock_status()
1363
def print_file(self, file, revision_id):
1364
"""See Branch.print_file."""
1365
return self.repository.print_file(file, revision_id)
1367
def _write_revision_history(self, history):
1368
"""Factored out of set_revision_history.
1370
This performs the actual writing to disk.
1371
It is intended to be called by BzrBranch5.set_revision_history."""
1372
self.control_files.put_bytes(
1373
'revision-history', '\n'.join(history))
1376
def set_revision_history(self, rev_history):
1377
"""See Branch.set_revision_history."""
1378
if 'evil' in debug.debug_flags:
1379
mutter_callsite(3, "set_revision_history scales with history.")
1380
self._clear_cached_state()
1381
self._write_revision_history(rev_history)
1382
self._cache_revision_history(rev_history)
1383
for hook in Branch.hooks['set_rh']:
1384
hook(self, rev_history)
1387
def set_last_revision_info(self, revno, revision_id):
1388
"""Set the last revision of this branch.
1390
The caller is responsible for checking that the revno is correct
1391
for this revision id.
1393
It may be possible to set the branch last revision to an id not
1394
present in the repository. However, branches can also be
1395
configured to check constraints on history, in which case this may not
1398
revision_id = _mod_revision.ensure_null(revision_id)
1399
history = self._lefthand_history(revision_id)
1400
assert len(history) == revno, '%d != %d' % (len(history), revno)
1401
self.set_revision_history(history)
1403
def _gen_revision_history(self):
1404
history = self.control_files.get('revision-history').read().split('\n')
1405
if history[-1:] == ['']:
1406
# There shouldn't be a trailing newline, but just in case.
1410
def _lefthand_history(self, revision_id, last_rev=None,
1412
if 'evil' in debug.debug_flags:
1413
mutter_callsite(4, "_lefthand_history scales with history.")
1414
# stop_revision must be a descendant of last_revision
1415
graph = self.repository.get_graph()
1416
if last_rev is not None:
1417
if not graph.is_ancestor(last_rev, revision_id):
1418
# our previous tip is not merged into stop_revision
1419
raise errors.DivergedBranches(self, other_branch)
1420
# make a new revision history from the graph
1421
parents_map = graph.get_parent_map([revision_id])
1422
if revision_id not in parents_map:
1423
raise errors.NoSuchRevision(self, revision_id)
1424
current_rev_id = revision_id
1426
# Do not include ghosts or graph origin in revision_history
1427
while (current_rev_id in parents_map and
1428
len(parents_map[current_rev_id]) > 0):
1429
new_history.append(current_rev_id)
1430
current_rev_id = parents_map[current_rev_id][0]
1431
parents_map = graph.get_parent_map([current_rev_id])
1432
new_history.reverse()
1436
def generate_revision_history(self, revision_id, last_rev=None,
1438
"""Create a new revision history that will finish with revision_id.
1440
:param revision_id: the new tip to use.
1441
:param last_rev: The previous last_revision. If not None, then this
1442
must be a ancestory of revision_id, or DivergedBranches is raised.
1443
:param other_branch: The other branch that DivergedBranches should
1444
raise with respect to.
1446
self.set_revision_history(self._lefthand_history(revision_id,
1447
last_rev, other_branch))
1450
def update_revisions(self, other, stop_revision=None, overwrite=False):
1451
"""See Branch.update_revisions."""
1454
other_last_revno, other_last_revision = other.last_revision_info()
1455
if stop_revision is None:
1456
stop_revision = other_last_revision
1457
if _mod_revision.is_null(stop_revision):
1458
# if there are no commits, we're done.
1460
# whats the current last revision, before we fetch [and change it
1462
last_rev = _mod_revision.ensure_null(self.last_revision())
1463
# we fetch here so that we don't process data twice in the common
1464
# case of having something to pull, and so that the check for
1465
# already merged can operate on the just fetched graph, which will
1466
# be cached in memory.
1467
self.fetch(other, stop_revision)
1468
# Check to see if one is an ancestor of the other
1470
heads = self.repository.get_graph().heads([stop_revision,
1472
if heads == set([last_rev]):
1473
# The current revision is a decendent of the target,
1476
elif heads == set([stop_revision, last_rev]):
1477
# These branches have diverged
1478
raise errors.DivergedBranches(self, other)
1479
assert heads == set([stop_revision])
1480
if other_last_revision == stop_revision:
1481
self.set_last_revision_info(other_last_revno,
1482
other_last_revision)
1484
# TODO: jam 2007-11-29 Is there a way to determine the
1485
# revno without searching all of history??
1487
self.generate_revision_history(stop_revision)
1489
self.generate_revision_history(stop_revision,
1490
last_rev=last_rev, other_branch=other)
1494
def basis_tree(self):
1495
"""See Branch.basis_tree."""
1496
return self.repository.revision_tree(self.last_revision())
1499
def pull(self, source, overwrite=False, stop_revision=None,
1500
_hook_master=None, run_hooks=True, possible_transports=None):
1503
:param _hook_master: Private parameter - set the branch to
1504
be supplied as the master to push hooks.
1505
:param run_hooks: Private parameter - if false, this branch
1506
is being called because it's the master of the primary branch,
1507
so it should not run its hooks.
1509
result = PullResult()
1510
result.source_branch = source
1511
result.target_branch = self
1514
result.old_revno, result.old_revid = self.last_revision_info()
1515
self.update_revisions(source, stop_revision, overwrite=overwrite)
1516
result.tag_conflicts = source.tags.merge_to(self.tags, overwrite)
1517
result.new_revno, result.new_revid = self.last_revision_info()
1519
result.master_branch = _hook_master
1520
result.local_branch = self
1522
result.master_branch = self
1523
result.local_branch = None
1525
for hook in Branch.hooks['post_pull']:
1531
def _get_parent_location(self):
1532
_locs = ['parent', 'pull', 'x-pull']
1535
return self.control_files.get(l).read().strip('\n')
1536
except errors.NoSuchFile:
1541
def push(self, target, overwrite=False, stop_revision=None,
1542
_override_hook_source_branch=None):
1545
This is the basic concrete implementation of push()
1547
:param _override_hook_source_branch: If specified, run
1548
the hooks passing this Branch as the source, rather than self.
1549
This is for use of RemoteBranch, where push is delegated to the
1550
underlying vfs-based Branch.
1552
# TODO: Public option to disable running hooks - should be trivial but
1556
result = self._push_with_bound_branches(target, overwrite,
1558
_override_hook_source_branch=_override_hook_source_branch)
1563
def _push_with_bound_branches(self, target, overwrite,
1565
_override_hook_source_branch=None):
1566
"""Push from self into target, and into target's master if any.
1568
This is on the base BzrBranch class even though it doesn't support
1569
bound branches because the *target* might be bound.
1572
if _override_hook_source_branch:
1573
result.source_branch = _override_hook_source_branch
1574
for hook in Branch.hooks['post_push']:
1577
bound_location = target.get_bound_location()
1578
if bound_location and target.base != bound_location:
1579
# there is a master branch.
1581
# XXX: Why the second check? Is it even supported for a branch to
1582
# be bound to itself? -- mbp 20070507
1583
master_branch = target.get_master_branch()
1584
master_branch.lock_write()
1586
# push into the master from this branch.
1587
self._basic_push(master_branch, overwrite, stop_revision)
1588
# and push into the target branch from this. Note that we push from
1589
# this branch again, because its considered the highest bandwidth
1591
result = self._basic_push(target, overwrite, stop_revision)
1592
result.master_branch = master_branch
1593
result.local_branch = target
1597
master_branch.unlock()
1600
result = self._basic_push(target, overwrite, stop_revision)
1601
# TODO: Why set master_branch and local_branch if there's no
1602
# binding? Maybe cleaner to just leave them unset? -- mbp
1604
result.master_branch = target
1605
result.local_branch = None
1609
def _basic_push(self, target, overwrite, stop_revision):
1610
"""Basic implementation of push without bound branches or hooks.
1612
Must be called with self read locked and target write locked.
1614
result = PushResult()
1615
result.source_branch = self
1616
result.target_branch = target
1617
result.old_revno, result.old_revid = target.last_revision_info()
1619
target.update_revisions(self, stop_revision)
1620
except errors.DivergedBranches:
1624
target.set_revision_history(self.revision_history())
1625
result.tag_conflicts = self.tags.merge_to(target.tags, overwrite)
1626
result.new_revno, result.new_revid = target.last_revision_info()
1629
def get_parent(self):
1630
"""See Branch.get_parent."""
1632
assert self.base[-1] == '/'
1633
parent = self._get_parent_location()
1636
# This is an old-format absolute path to a local branch
1637
# turn it into a url
1638
if parent.startswith('/'):
1639
parent = urlutils.local_path_to_url(parent.decode('utf8'))
1641
return urlutils.join(self.base[:-1], parent)
1642
except errors.InvalidURLJoin, e:
1643
raise errors.InaccessibleParent(parent, self.base)
1645
def set_push_location(self, location):
1646
"""See Branch.set_push_location."""
1647
self.get_config().set_user_option(
1648
'push_location', location,
1649
store=_mod_config.STORE_LOCATION_NORECURSE)
1652
def set_parent(self, url):
1653
"""See Branch.set_parent."""
1654
# TODO: Maybe delete old location files?
1655
# URLs should never be unicode, even on the local fs,
1656
# FIXUP this and get_parent in a future branch format bump:
1657
# read and rewrite the file, and have the new format code read
1658
# using .get not .get_utf8. RBC 20060125
1660
if isinstance(url, unicode):
1662
url = url.encode('ascii')
1663
except UnicodeEncodeError:
1664
raise errors.InvalidURL(url,
1665
"Urls must be 7-bit ascii, "
1666
"use bzrlib.urlutils.escape")
1667
url = urlutils.relative_url(self.base, url)
1668
self._set_parent_location(url)
1670
def _set_parent_location(self, url):
1672
self.control_files._transport.delete('parent')
1674
assert isinstance(url, str)
1675
self.control_files.put_bytes('parent', url + '\n')
1678
class BzrBranch5(BzrBranch):
1679
"""A format 5 branch. This supports new features over plain branches.
1681
It has support for a master_branch which is the data for bound branches.
1689
super(BzrBranch5, self).__init__(_format=_format,
1690
_control_files=_control_files,
1692
_repository=_repository)
1695
def pull(self, source, overwrite=False, stop_revision=None,
1696
run_hooks=True, possible_transports=None):
1697
"""Pull from source into self, updating my master if any.
1699
:param run_hooks: Private parameter - if false, this branch
1700
is being called because it's the master of the primary branch,
1701
so it should not run its hooks.
1703
bound_location = self.get_bound_location()
1704
master_branch = None
1705
if bound_location and source.base != bound_location:
1706
# not pulling from master, so we need to update master.
1707
master_branch = self.get_master_branch(possible_transports)
1708
master_branch.lock_write()
1711
# pull from source into master.
1712
master_branch.pull(source, overwrite, stop_revision,
1714
return super(BzrBranch5, self).pull(source, overwrite,
1715
stop_revision, _hook_master=master_branch,
1716
run_hooks=run_hooks)
1719
master_branch.unlock()
1721
def get_bound_location(self):
1723
return self.control_files.get_utf8('bound').read()[:-1]
1724
except errors.NoSuchFile:
1728
def get_master_branch(self, possible_transports=None):
1729
"""Return the branch we are bound to.
1731
:return: Either a Branch, or None
1733
This could memoise the branch, but if thats done
1734
it must be revalidated on each new lock.
1735
So for now we just don't memoise it.
1736
# RBC 20060304 review this decision.
1738
bound_loc = self.get_bound_location()
1742
return Branch.open(bound_loc,
1743
possible_transports=possible_transports)
1744
except (errors.NotBranchError, errors.ConnectionError), e:
1745
raise errors.BoundBranchConnectionFailure(
1749
def set_bound_location(self, location):
1750
"""Set the target where this branch is bound to.
1752
:param location: URL to the target branch
1755
self.control_files.put_utf8('bound', location+'\n')
1758
self.control_files._transport.delete('bound')
1759
except errors.NoSuchFile:
1764
def bind(self, other):
1765
"""Bind this branch to the branch other.
1767
This does not push or pull data between the branches, though it does
1768
check for divergence to raise an error when the branches are not
1769
either the same, or one a prefix of the other. That behaviour may not
1770
be useful, so that check may be removed in future.
1772
:param other: The branch to bind to
1775
# TODO: jam 20051230 Consider checking if the target is bound
1776
# It is debatable whether you should be able to bind to
1777
# a branch which is itself bound.
1778
# Committing is obviously forbidden,
1779
# but binding itself may not be.
1780
# Since we *have* to check at commit time, we don't
1781
# *need* to check here
1783
# we want to raise diverged if:
1784
# last_rev is not in the other_last_rev history, AND
1785
# other_last_rev is not in our history, and do it without pulling
1787
self.set_bound_location(other.base)
1791
"""If bound, unbind"""
1792
return self.set_bound_location(None)
1795
def update(self, possible_transports=None):
1796
"""Synchronise this branch with the master branch if any.
1798
:return: None or the last_revision that was pivoted out during the
1801
master = self.get_master_branch(possible_transports)
1802
if master is not None:
1803
old_tip = _mod_revision.ensure_null(self.last_revision())
1804
self.pull(master, overwrite=True)
1805
if self.repository.get_graph().is_ancestor(old_tip,
1806
_mod_revision.ensure_null(self.last_revision())):
1812
class BzrBranch6(BzrBranch5):
1815
def last_revision_info(self):
1816
revision_string = self.control_files.get('last-revision').read()
1817
revno, revision_id = revision_string.rstrip('\n').split(' ', 1)
1818
revision_id = cache_utf8.get_cached_utf8(revision_id)
1820
return revno, revision_id
1822
def _write_last_revision_info(self, revno, revision_id):
1823
"""Simply write out the revision id, with no checks.
1825
Use set_last_revision_info to perform this safely.
1827
Does not update the revision_history cache.
1828
Intended to be called by set_last_revision_info and
1829
_write_revision_history.
1831
assert revision_id is not None, "Use NULL_REVISION, not None"
1832
out_string = '%d %s\n' % (revno, revision_id)
1833
self.control_files.put_bytes('last-revision', out_string)
1836
def set_last_revision_info(self, revno, revision_id):
1837
revision_id = _mod_revision.ensure_null(revision_id)
1838
if self._get_append_revisions_only():
1839
self._check_history_violation(revision_id)
1840
self._write_last_revision_info(revno, revision_id)
1841
self._clear_cached_state()
1843
def _check_history_violation(self, revision_id):
1844
last_revision = _mod_revision.ensure_null(self.last_revision())
1845
if _mod_revision.is_null(last_revision):
1847
if last_revision not in self._lefthand_history(revision_id):
1848
raise errors.AppendRevisionsOnlyViolation(self.base)
1850
def _gen_revision_history(self):
1851
"""Generate the revision history from last revision
1853
history = list(self.repository.iter_reverse_revision_history(
1854
self.last_revision()))
1858
def _write_revision_history(self, history):
1859
"""Factored out of set_revision_history.
1861
This performs the actual writing to disk, with format-specific checks.
1862
It is intended to be called by BzrBranch5.set_revision_history.
1864
if len(history) == 0:
1865
last_revision = 'null:'
1867
if history != self._lefthand_history(history[-1]):
1868
raise errors.NotLefthandHistory(history)
1869
last_revision = history[-1]
1870
if self._get_append_revisions_only():
1871
self._check_history_violation(last_revision)
1872
self._write_last_revision_info(len(history), last_revision)
1875
def _set_parent_location(self, url):
1876
"""Set the parent branch"""
1877
self._set_config_location('parent_location', url, make_relative=True)
1880
def _get_parent_location(self):
1881
"""Set the parent branch"""
1882
return self._get_config_location('parent_location')
1884
def set_push_location(self, location):
1885
"""See Branch.set_push_location."""
1886
self._set_config_location('push_location', location)
1888
def set_bound_location(self, location):
1889
"""See Branch.set_push_location."""
1891
config = self.get_config()
1892
if location is None:
1893
if config.get_user_option('bound') != 'True':
1896
config.set_user_option('bound', 'False', warn_masked=True)
1899
self._set_config_location('bound_location', location,
1901
config.set_user_option('bound', 'True', warn_masked=True)
1904
def _get_bound_location(self, bound):
1905
"""Return the bound location in the config file.
1907
Return None if the bound parameter does not match"""
1908
config = self.get_config()
1909
config_bound = (config.get_user_option('bound') == 'True')
1910
if config_bound != bound:
1912
return self._get_config_location('bound_location', config=config)
1914
def get_bound_location(self):
1915
"""See Branch.set_push_location."""
1916
return self._get_bound_location(True)
1918
def get_old_bound_location(self):
1919
"""See Branch.get_old_bound_location"""
1920
return self._get_bound_location(False)
1922
def set_append_revisions_only(self, enabled):
1927
self.get_config().set_user_option('append_revisions_only', value,
1930
def _get_append_revisions_only(self):
1931
value = self.get_config().get_user_option('append_revisions_only')
1932
return value == 'True'
1934
def _synchronize_history(self, destination, revision_id):
1935
"""Synchronize last revision and revision history between branches.
1937
This version is most efficient when the destination is also a
1938
BzrBranch6, but works for BzrBranch5, as long as the destination's
1939
repository contains all the lefthand ancestors of the intended
1940
last_revision. If not, set_last_revision_info will fail.
1942
:param destination: The branch to copy the history into
1943
:param revision_id: The revision-id to truncate history at. May
1944
be None to copy complete history.
1946
source_revno, source_revision_id = self.last_revision_info()
1947
if revision_id is None:
1948
revno, revision_id = source_revno, source_revision_id
1949
elif source_revision_id == revision_id:
1950
# we know the revno without needing to walk all of history
1951
revno = source_revno
1953
# To figure out the revno for a random revision, we need to build
1954
# the revision history, and count its length.
1955
# We don't care about the order, just how long it is.
1956
# Alternatively, we could start at the current location, and count
1957
# backwards. But there is no guarantee that we will find it since
1958
# it may be a merged revision.
1959
revno = len(list(self.repository.iter_reverse_revision_history(
1961
destination.set_last_revision_info(revno, revision_id)
1963
def _make_tags(self):
1964
return BasicTags(self)
1967
def generate_revision_history(self, revision_id, last_rev=None,
1969
"""See BzrBranch5.generate_revision_history"""
1970
history = self._lefthand_history(revision_id, last_rev, other_branch)
1971
revno = len(history)
1972
self.set_last_revision_info(revno, revision_id)
1975
######################################################################
1976
# results of operations
1979
class _Result(object):
1981
def _show_tag_conficts(self, to_file):
1982
if not getattr(self, 'tag_conflicts', None):
1984
to_file.write('Conflicting tags:\n')
1985
for name, value1, value2 in self.tag_conflicts:
1986
to_file.write(' %s\n' % (name, ))
1989
class PullResult(_Result):
1990
"""Result of a Branch.pull operation.
1992
:ivar old_revno: Revision number before pull.
1993
:ivar new_revno: Revision number after pull.
1994
:ivar old_revid: Tip revision id before pull.
1995
:ivar new_revid: Tip revision id after pull.
1996
:ivar source_branch: Source (local) branch object.
1997
:ivar master_branch: Master branch of the target, or None.
1998
:ivar target_branch: Target/destination branch object.
2002
# DEPRECATED: pull used to return the change in revno
2003
return self.new_revno - self.old_revno
2005
def report(self, to_file):
2007
if self.old_revid == self.new_revid:
2008
to_file.write('No revisions to pull.\n')
2010
to_file.write('Now on revision %d.\n' % self.new_revno)
2011
self._show_tag_conficts(to_file)
2014
class PushResult(_Result):
2015
"""Result of a Branch.push operation.
2017
:ivar old_revno: Revision number before push.
2018
:ivar new_revno: Revision number after push.
2019
:ivar old_revid: Tip revision id before push.
2020
:ivar new_revid: Tip revision id after push.
2021
:ivar source_branch: Source branch object.
2022
:ivar master_branch: Master branch of the target, or None.
2023
:ivar target_branch: Target/destination branch object.
2027
# DEPRECATED: push used to return the change in revno
2028
return self.new_revno - self.old_revno
2030
def report(self, to_file):
2031
"""Write a human-readable description of the result."""
2032
if self.old_revid == self.new_revid:
2033
to_file.write('No new revisions to push.\n')
2035
to_file.write('Pushed up to revision %d.\n' % self.new_revno)
2036
self._show_tag_conficts(to_file)
2039
class BranchCheckResult(object):
2040
"""Results of checking branch consistency.
2045
def __init__(self, branch):
2046
self.branch = branch
2048
def report_results(self, verbose):
2049
"""Report the check results via trace.note.
2051
:param verbose: Requests more detailed display of what was checked,
2054
note('checked branch %s format %s',
2056
self.branch._format)
2059
class Converter5to6(object):
2060
"""Perform an in-place upgrade of format 5 to format 6"""
2062
def convert(self, branch):
2063
# Data for 5 and 6 can peacefully coexist.
2064
format = BzrBranchFormat6()
2065
new_branch = format.open(branch.bzrdir, _found=True)
2067
# Copy source data into target
2068
new_branch.set_last_revision_info(*branch.last_revision_info())
2069
new_branch.set_parent(branch.get_parent())
2070
new_branch.set_bound_location(branch.get_bound_location())
2071
new_branch.set_push_location(branch.get_push_location())
2073
# New branch has no tags by default
2074
new_branch.tags._set_tag_dict({})
2076
# Copying done; now update target format
2077
new_branch.control_files.put_utf8('format',
2078
format.get_format_string())
2080
# Clean up old files
2081
new_branch.control_files._transport.delete('revision-history')
2083
branch.set_parent(None)
2084
except errors.NoSuchFile:
2086
branch.set_bound_location(None)
added
removed
bzrlib/branch.py
