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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 = self.repository.get_revision_graph(last_revision)
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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()
797
class BranchFormat(object):
798
"""An encapsulation of the initialization and open routines for a format.
800
Formats provide three things:
801
* An initialization routine,
805
Formats are placed in an dict by their format string for reference
806
during branch opening. Its not required that these be instances, they
807
can be classes themselves with class methods - it simply depends on
808
whether state is needed for a given format or not.
810
Once a format is deprecated, just deprecate the initialize and open
811
methods on the format class. Do not deprecate the object, as the
812
object will be created every time regardless.
815
_default_format = None
816
"""The default format used for new branches."""
819
"""The known formats."""
821
def __eq__(self, other):
822
return self.__class__ is other.__class__
824
def __ne__(self, other):
825
return not (self == other)
828
def find_format(klass, a_bzrdir):
829
"""Return the format for the branch object in a_bzrdir."""
831
transport = a_bzrdir.get_branch_transport(None)
832
format_string = transport.get("format").read()
833
return klass._formats[format_string]
834
except errors.NoSuchFile:
835
raise errors.NotBranchError(path=transport.base)
837
raise errors.UnknownFormatError(format=format_string, kind='branch')
840
def get_default_format(klass):
841
"""Return the current default format."""
842
return klass._default_format
844
def get_reference(self, a_bzrdir):
845
"""Get the target reference of the branch in a_bzrdir.
847
format probing must have been completed before calling
848
this method - it is assumed that the format of the branch
849
in a_bzrdir is correct.
851
:param a_bzrdir: The bzrdir to get the branch data from.
852
:return: None if the branch is not a reference branch.
857
def set_reference(self, a_bzrdir, to_branch):
858
"""Set the target reference of the branch in a_bzrdir.
860
format probing must have been completed before calling
861
this method - it is assumed that the format of the branch
862
in a_bzrdir is correct.
864
:param a_bzrdir: The bzrdir to set the branch reference for.
865
:param to_branch: branch that the checkout is to reference
867
raise NotImplementedError(self.set_reference)
869
def get_format_string(self):
870
"""Return the ASCII format string that identifies this format."""
871
raise NotImplementedError(self.get_format_string)
873
def get_format_description(self):
874
"""Return the short format description for this format."""
875
raise NotImplementedError(self.get_format_description)
877
def _initialize_helper(self, a_bzrdir, utf8_files, lock_type='metadir',
879
"""Initialize a branch in a bzrdir, with specified files
881
:param a_bzrdir: The bzrdir to initialize the branch in
882
:param utf8_files: The files to create as a list of
883
(filename, content) tuples
884
:param set_format: If True, set the format with
885
self.get_format_string. (BzrBranch4 has its format set
887
:return: a branch in this format
889
mutter('creating branch %r in %s', self, a_bzrdir.transport.base)
890
branch_transport = a_bzrdir.get_branch_transport(self)
892
'metadir': ('lock', lockdir.LockDir),
893
'branch4': ('branch-lock', lockable_files.TransportLock),
895
lock_name, lock_class = lock_map[lock_type]
896
control_files = lockable_files.LockableFiles(branch_transport,
897
lock_name, lock_class)
898
control_files.create_lock()
899
control_files.lock_write()
901
control_files.put_utf8('format', self.get_format_string())
903
for file, content in utf8_files:
904
control_files.put_utf8(file, content)
906
control_files.unlock()
907
return self.open(a_bzrdir, _found=True)
909
def initialize(self, a_bzrdir):
910
"""Create a branch of this format in a_bzrdir."""
911
raise NotImplementedError(self.initialize)
913
def is_supported(self):
914
"""Is this format supported?
916
Supported formats can be initialized and opened.
917
Unsupported formats may not support initialization or committing or
918
some other features depending on the reason for not being supported.
922
def open(self, a_bzrdir, _found=False):
923
"""Return the branch object for a_bzrdir
925
_found is a private parameter, do not use it. It is used to indicate
926
if format probing has already be done.
928
raise NotImplementedError(self.open)
931
def register_format(klass, format):
932
klass._formats[format.get_format_string()] = format
935
def set_default_format(klass, format):
936
klass._default_format = format
939
def unregister_format(klass, format):
940
assert klass._formats[format.get_format_string()] is format
941
del klass._formats[format.get_format_string()]
944
return self.get_format_string().rstrip()
946
def supports_tags(self):
947
"""True if this format supports tags stored in the branch"""
948
return False # by default
950
# XXX: Probably doesn't really belong here -- mbp 20070212
951
def _initialize_control_files(self, a_bzrdir, utf8_files, lock_filename,
953
branch_transport = a_bzrdir.get_branch_transport(self)
954
control_files = lockable_files.LockableFiles(branch_transport,
955
lock_filename, lock_class)
956
control_files.create_lock()
957
control_files.lock_write()
959
for filename, content in utf8_files:
960
control_files.put_utf8(filename, content)
962
control_files.unlock()
965
class BranchHooks(Hooks):
966
"""A dictionary mapping hook name to a list of callables for branch hooks.
968
e.g. ['set_rh'] Is the list of items to be called when the
969
set_revision_history function is invoked.
973
"""Create the default hooks.
975
These are all empty initially, because by default nothing should get
979
# Introduced in 0.15:
980
# invoked whenever the revision history has been set
981
# with set_revision_history. The api signature is
982
# (branch, revision_history), and the branch will
985
# invoked after a push operation completes.
986
# the api signature is
988
# containing the members
989
# (source, local, master, old_revno, old_revid, new_revno, new_revid)
990
# where local is the local target branch or None, master is the target
991
# master branch, and the rest should be self explanatory. The source
992
# is read locked and the target branches write locked. Source will
993
# be the local low-latency branch.
994
self['post_push'] = []
995
# invoked after a pull operation completes.
996
# the api signature is
998
# containing the members
999
# (source, local, master, old_revno, old_revid, new_revno, new_revid)
1000
# where local is the local branch or None, master is the target
1001
# master branch, and the rest should be self explanatory. The source
1002
# is read locked and the target branches write locked. The local
1003
# branch is the low-latency branch.
1004
self['post_pull'] = []
1005
# invoked before a commit operation takes place.
1006
# the api signature is
1007
# (local, master, old_revno, old_revid, future_revno, future_revid,
1008
# tree_delta, future_tree).
1009
# old_revid is NULL_REVISION for the first commit to a branch
1010
# tree_delta is a TreeDelta object describing changes from the basis
1011
# revision, hooks MUST NOT modify this delta
1012
# future_tree is an in-memory tree obtained from
1013
# CommitBuilder.revision_tree() and hooks MUST NOT modify this tree
1014
self['pre_commit'] = []
1015
# invoked after a commit operation completes.
1016
# the api signature is
1017
# (local, master, old_revno, old_revid, new_revno, new_revid)
1018
# old_revid is NULL_REVISION for the first commit to a branch.
1019
self['post_commit'] = []
1020
# invoked after a uncommit operation completes.
1021
# the api signature is
1022
# (local, master, old_revno, old_revid, new_revno, new_revid) where
1023
# local is the local branch or None, master is the target branch,
1024
# and an empty branch recieves new_revno of 0, new_revid of None.
1025
self['post_uncommit'] = []
1028
# install the default hooks into the Branch class.
1029
Branch.hooks = BranchHooks()
1032
class BzrBranchFormat4(BranchFormat):
1033
"""Bzr branch format 4.
1036
- a revision-history file.
1037
- a branch-lock lock file [ to be shared with the bzrdir ]
1040
def get_format_description(self):
1041
"""See BranchFormat.get_format_description()."""
1042
return "Branch format 4"
1044
def initialize(self, a_bzrdir):
1045
"""Create a branch of this format in a_bzrdir."""
1046
utf8_files = [('revision-history', ''),
1047
('branch-name', ''),
1049
return self._initialize_helper(a_bzrdir, utf8_files,
1050
lock_type='branch4', set_format=False)
1053
super(BzrBranchFormat4, self).__init__()
1054
self._matchingbzrdir = bzrdir.BzrDirFormat6()
1056
def open(self, a_bzrdir, _found=False):
1057
"""Return the branch object for a_bzrdir
1059
_found is a private parameter, do not use it. It is used to indicate
1060
if format probing has already be done.
1063
# we are being called directly and must probe.
1064
raise NotImplementedError
1065
return BzrBranch(_format=self,
1066
_control_files=a_bzrdir._control_files,
1068
_repository=a_bzrdir.open_repository())
1071
return "Bazaar-NG branch format 4"
1074
class BzrBranchFormat5(BranchFormat):
1075
"""Bzr branch format 5.
1078
- a revision-history file.
1080
- a lock dir guarding the branch itself
1081
- all of this stored in a branch/ subdirectory
1082
- works with shared repositories.
1084
This format is new in bzr 0.8.
1087
def get_format_string(self):
1088
"""See BranchFormat.get_format_string()."""
1089
return "Bazaar-NG branch format 5\n"
1091
def get_format_description(self):
1092
"""See BranchFormat.get_format_description()."""
1093
return "Branch format 5"
1095
def initialize(self, a_bzrdir):
1096
"""Create a branch of this format in a_bzrdir."""
1097
utf8_files = [('revision-history', ''),
1098
('branch-name', ''),
1100
return self._initialize_helper(a_bzrdir, utf8_files)
1103
super(BzrBranchFormat5, self).__init__()
1104
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
1106
def open(self, a_bzrdir, _found=False):
1107
"""Return the branch object for a_bzrdir
1109
_found is a private parameter, do not use it. It is used to indicate
1110
if format probing has already be done.
1113
format = BranchFormat.find_format(a_bzrdir)
1114
assert format.__class__ == self.__class__
1116
transport = a_bzrdir.get_branch_transport(None)
1117
control_files = lockable_files.LockableFiles(transport, 'lock',
1119
return BzrBranch5(_format=self,
1120
_control_files=control_files,
1122
_repository=a_bzrdir.find_repository())
1123
except errors.NoSuchFile:
1124
raise errors.NotBranchError(path=transport.base)
1127
class BzrBranchFormat6(BzrBranchFormat5):
1128
"""Branch format with last-revision and tags.
1130
Unlike previous formats, this has no explicit revision history. Instead,
1131
this just stores the last-revision, and the left-hand history leading
1132
up to there is the history.
1134
This format was introduced in bzr 0.15
1135
and became the default in 0.91.
1138
def get_format_string(self):
1139
"""See BranchFormat.get_format_string()."""
1140
return "Bazaar Branch Format 6 (bzr 0.15)\n"
1142
def get_format_description(self):
1143
"""See BranchFormat.get_format_description()."""
1144
return "Branch format 6"
1146
def initialize(self, a_bzrdir):
1147
"""Create a branch of this format in a_bzrdir."""
1148
utf8_files = [('last-revision', '0 null:\n'),
1149
('branch.conf', ''),
1152
return self._initialize_helper(a_bzrdir, utf8_files)
1154
def open(self, a_bzrdir, _found=False):
1155
"""Return the branch object for a_bzrdir
1157
_found is a private parameter, do not use it. It is used to indicate
1158
if format probing has already be done.
1161
format = BranchFormat.find_format(a_bzrdir)
1162
assert format.__class__ == self.__class__
1163
transport = a_bzrdir.get_branch_transport(None)
1164
control_files = lockable_files.LockableFiles(transport, 'lock',
1166
return BzrBranch6(_format=self,
1167
_control_files=control_files,
1169
_repository=a_bzrdir.find_repository())
1171
def supports_tags(self):
1175
class BranchReferenceFormat(BranchFormat):
1176
"""Bzr branch reference format.
1178
Branch references are used in implementing checkouts, they
1179
act as an alias to the real branch which is at some other url.
1186
def get_format_string(self):
1187
"""See BranchFormat.get_format_string()."""
1188
return "Bazaar-NG Branch Reference Format 1\n"
1190
def get_format_description(self):
1191
"""See BranchFormat.get_format_description()."""
1192
return "Checkout reference format 1"
1194
def get_reference(self, a_bzrdir):
1195
"""See BranchFormat.get_reference()."""
1196
transport = a_bzrdir.get_branch_transport(None)
1197
return transport.get('location').read()
1199
def set_reference(self, a_bzrdir, to_branch):
1200
"""See BranchFormat.set_reference()."""
1201
transport = a_bzrdir.get_branch_transport(None)
1202
location = transport.put_bytes('location', to_branch.base)
1204
def initialize(self, a_bzrdir, target_branch=None):
1205
"""Create a branch of this format in a_bzrdir."""
1206
if target_branch is None:
1207
# this format does not implement branch itself, thus the implicit
1208
# creation contract must see it as uninitializable
1209
raise errors.UninitializableFormat(self)
1210
mutter('creating branch reference in %s', a_bzrdir.transport.base)
1211
branch_transport = a_bzrdir.get_branch_transport(self)
1212
branch_transport.put_bytes('location',
1213
target_branch.bzrdir.root_transport.base)
1214
branch_transport.put_bytes('format', self.get_format_string())
1216
a_bzrdir, _found=True,
1217
possible_transports=[target_branch.bzrdir.root_transport])
1220
super(BranchReferenceFormat, self).__init__()
1221
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
1223
def _make_reference_clone_function(format, a_branch):
1224
"""Create a clone() routine for a branch dynamically."""
1225
def clone(to_bzrdir, revision_id=None):
1226
"""See Branch.clone()."""
1227
return format.initialize(to_bzrdir, a_branch)
1228
# cannot obey revision_id limits when cloning a reference ...
1229
# FIXME RBC 20060210 either nuke revision_id for clone, or
1230
# emit some sort of warning/error to the caller ?!
1233
def open(self, a_bzrdir, _found=False, location=None,
1234
possible_transports=None):
1235
"""Return the branch that the branch reference in a_bzrdir points at.
1237
_found is a private parameter, do not use it. It is used to indicate
1238
if format probing has already be done.
1241
format = BranchFormat.find_format(a_bzrdir)
1242
assert format.__class__ == self.__class__
1243
if location is None:
1244
location = self.get_reference(a_bzrdir)
1245
real_bzrdir = bzrdir.BzrDir.open(
1246
location, possible_transports=possible_transports)
1247
result = real_bzrdir.open_branch()
1248
# this changes the behaviour of result.clone to create a new reference
1249
# rather than a copy of the content of the branch.
1250
# I did not use a proxy object because that needs much more extensive
1251
# testing, and we are only changing one behaviour at the moment.
1252
# If we decide to alter more behaviours - i.e. the implicit nickname
1253
# then this should be refactored to introduce a tested proxy branch
1254
# and a subclass of that for use in overriding clone() and ....
1256
result.clone = self._make_reference_clone_function(result)
1260
# formats which have no format string are not discoverable
1261
# and not independently creatable, so are not registered.
1262
__format5 = BzrBranchFormat5()
1263
__format6 = BzrBranchFormat6()
1264
BranchFormat.register_format(__format5)
1265
BranchFormat.register_format(BranchReferenceFormat())
1266
BranchFormat.register_format(__format6)
1267
BranchFormat.set_default_format(__format6)
1268
_legacy_formats = [BzrBranchFormat4(),
1271
class BzrBranch(Branch):
1272
"""A branch stored in the actual filesystem.
1274
Note that it's "local" in the context of the filesystem; it doesn't
1275
really matter if it's on an nfs/smb/afs/coda/... share, as long as
1276
it's writable, and can be accessed via the normal filesystem API.
1279
def __init__(self, _format=None,
1280
_control_files=None, a_bzrdir=None, _repository=None):
1281
"""Create new branch object at a particular location."""
1282
Branch.__init__(self)
1283
if a_bzrdir is None:
1284
raise ValueError('a_bzrdir must be supplied')
1286
self.bzrdir = a_bzrdir
1287
# self._transport used to point to the directory containing the
1288
# control directory, but was not used - now it's just the transport
1289
# for the branch control files. mbp 20070212
1290
self._base = self.bzrdir.transport.clone('..').base
1291
self._format = _format
1292
if _control_files is None:
1293
raise ValueError('BzrBranch _control_files is None')
1294
self.control_files = _control_files
1295
self._transport = _control_files._transport
1296
self.repository = _repository
1299
return '%s(%r)' % (self.__class__.__name__, self.base)
1303
def _get_base(self):
1304
"""Returns the directory containing the control directory."""
1307
base = property(_get_base, doc="The URL for the root of this branch.")
1309
def abspath(self, name):
1310
"""See Branch.abspath."""
1311
return self.control_files._transport.abspath(name)
1314
@deprecated_method(zero_sixteen)
1316
def get_root_id(self):
1317
"""See Branch.get_root_id."""
1318
tree = self.repository.revision_tree(self.last_revision())
1319
return tree.get_root_id()
1321
def is_locked(self):
1322
return self.control_files.is_locked()
1324
def lock_write(self, token=None):
1325
repo_token = self.repository.lock_write()
1327
token = self.control_files.lock_write(token=token)
1329
self.repository.unlock()
1333
def lock_read(self):
1334
self.repository.lock_read()
1336
self.control_files.lock_read()
1338
self.repository.unlock()
1342
# TODO: test for failed two phase locks. This is known broken.
1344
self.control_files.unlock()
1346
self.repository.unlock()
1347
if not self.control_files.is_locked():
1348
# we just released the lock
1349
self._clear_cached_state()
1351
def peek_lock_mode(self):
1352
if self.control_files._lock_count == 0:
1355
return self.control_files._lock_mode
1357
def get_physical_lock_status(self):
1358
return self.control_files.get_physical_lock_status()
1361
def print_file(self, file, revision_id):
1362
"""See Branch.print_file."""
1363
return self.repository.print_file(file, revision_id)
1365
def _write_revision_history(self, history):
1366
"""Factored out of set_revision_history.
1368
This performs the actual writing to disk.
1369
It is intended to be called by BzrBranch5.set_revision_history."""
1370
self.control_files.put_bytes(
1371
'revision-history', '\n'.join(history))
1374
def set_revision_history(self, rev_history):
1375
"""See Branch.set_revision_history."""
1376
if 'evil' in debug.debug_flags:
1377
mutter_callsite(3, "set_revision_history scales with history.")
1378
self._clear_cached_state()
1379
self._write_revision_history(rev_history)
1380
self._cache_revision_history(rev_history)
1381
for hook in Branch.hooks['set_rh']:
1382
hook(self, rev_history)
1385
def set_last_revision_info(self, revno, revision_id):
1386
"""Set the last revision of this branch.
1388
The caller is responsible for checking that the revno is correct
1389
for this revision id.
1391
It may be possible to set the branch last revision to an id not
1392
present in the repository. However, branches can also be
1393
configured to check constraints on history, in which case this may not
1396
revision_id = _mod_revision.ensure_null(revision_id)
1397
history = self._lefthand_history(revision_id)
1398
assert len(history) == revno, '%d != %d' % (len(history), revno)
1399
self.set_revision_history(history)
1401
def _gen_revision_history(self):
1402
history = self.control_files.get('revision-history').read().split('\n')
1403
if history[-1:] == ['']:
1404
# There shouldn't be a trailing newline, but just in case.
1408
def _lefthand_history(self, revision_id, last_rev=None,
1410
if 'evil' in debug.debug_flags:
1411
mutter_callsite(4, "_lefthand_history scales with history.")
1412
# stop_revision must be a descendant of last_revision
1413
graph = self.repository.get_graph()
1414
if last_rev is not None:
1415
if not graph.is_ancestor(last_rev, revision_id):
1416
# our previous tip is not merged into stop_revision
1417
raise errors.DivergedBranches(self, other_branch)
1418
# make a new revision history from the graph
1419
parents_map = graph.get_parent_map([revision_id])
1420
if revision_id not in parents_map:
1421
raise errors.NoSuchRevision(self, revision_id)
1422
current_rev_id = revision_id
1424
# Do not include ghosts or graph origin in revision_history
1425
while (current_rev_id in parents_map and
1426
len(parents_map[current_rev_id]) > 0):
1427
new_history.append(current_rev_id)
1428
current_rev_id = parents_map[current_rev_id][0]
1429
parents_map = graph.get_parent_map([current_rev_id])
1430
new_history.reverse()
1434
def generate_revision_history(self, revision_id, last_rev=None,
1436
"""Create a new revision history that will finish with revision_id.
1438
:param revision_id: the new tip to use.
1439
:param last_rev: The previous last_revision. If not None, then this
1440
must be a ancestory of revision_id, or DivergedBranches is raised.
1441
:param other_branch: The other branch that DivergedBranches should
1442
raise with respect to.
1444
self.set_revision_history(self._lefthand_history(revision_id,
1445
last_rev, other_branch))
1448
def update_revisions(self, other, stop_revision=None, overwrite=False):
1449
"""See Branch.update_revisions."""
1452
other_last_revno, other_last_revision = other.last_revision_info()
1453
if stop_revision is None:
1454
stop_revision = other_last_revision
1455
if _mod_revision.is_null(stop_revision):
1456
# if there are no commits, we're done.
1458
# whats the current last revision, before we fetch [and change it
1460
last_rev = _mod_revision.ensure_null(self.last_revision())
1461
# we fetch here so that we don't process data twice in the common
1462
# case of having something to pull, and so that the check for
1463
# already merged can operate on the just fetched graph, which will
1464
# be cached in memory.
1465
self.fetch(other, stop_revision)
1466
# Check to see if one is an ancestor of the other
1468
heads = self.repository.get_graph().heads([stop_revision,
1470
if heads == set([last_rev]):
1471
# The current revision is a decendent of the target,
1474
elif heads == set([stop_revision, last_rev]):
1475
# These branches have diverged
1476
raise errors.DivergedBranches(self, other)
1477
assert heads == set([stop_revision])
1478
if other_last_revision == stop_revision:
1479
self.set_last_revision_info(other_last_revno,
1480
other_last_revision)
1482
# TODO: jam 2007-11-29 Is there a way to determine the
1483
# revno without searching all of history??
1485
self.generate_revision_history(stop_revision)
1487
self.generate_revision_history(stop_revision,
1488
last_rev=last_rev, other_branch=other)
1492
def basis_tree(self):
1493
"""See Branch.basis_tree."""
1494
return self.repository.revision_tree(self.last_revision())
1497
def pull(self, source, overwrite=False, stop_revision=None,
1498
_hook_master=None, run_hooks=True, possible_transports=None):
1501
:param _hook_master: Private parameter - set the branch to
1502
be supplied as the master to push hooks.
1503
:param run_hooks: Private parameter - if false, this branch
1504
is being called because it's the master of the primary branch,
1505
so it should not run its hooks.
1507
result = PullResult()
1508
result.source_branch = source
1509
result.target_branch = self
1512
result.old_revno, result.old_revid = self.last_revision_info()
1513
self.update_revisions(source, stop_revision, overwrite=overwrite)
1514
result.tag_conflicts = source.tags.merge_to(self.tags, overwrite)
1515
result.new_revno, result.new_revid = self.last_revision_info()
1517
result.master_branch = _hook_master
1518
result.local_branch = self
1520
result.master_branch = self
1521
result.local_branch = None
1523
for hook in Branch.hooks['post_pull']:
1529
def _get_parent_location(self):
1530
_locs = ['parent', 'pull', 'x-pull']
1533
return self.control_files.get(l).read().strip('\n')
1534
except errors.NoSuchFile:
1539
def push(self, target, overwrite=False, stop_revision=None,
1540
_override_hook_source_branch=None):
1543
This is the basic concrete implementation of push()
1545
:param _override_hook_source_branch: If specified, run
1546
the hooks passing this Branch as the source, rather than self.
1547
This is for use of RemoteBranch, where push is delegated to the
1548
underlying vfs-based Branch.
1550
# TODO: Public option to disable running hooks - should be trivial but
1554
result = self._push_with_bound_branches(target, overwrite,
1556
_override_hook_source_branch=_override_hook_source_branch)
1561
def _push_with_bound_branches(self, target, overwrite,
1563
_override_hook_source_branch=None):
1564
"""Push from self into target, and into target's master if any.
1566
This is on the base BzrBranch class even though it doesn't support
1567
bound branches because the *target* might be bound.
1570
if _override_hook_source_branch:
1571
result.source_branch = _override_hook_source_branch
1572
for hook in Branch.hooks['post_push']:
1575
bound_location = target.get_bound_location()
1576
if bound_location and target.base != bound_location:
1577
# there is a master branch.
1579
# XXX: Why the second check? Is it even supported for a branch to
1580
# be bound to itself? -- mbp 20070507
1581
master_branch = target.get_master_branch()
1582
master_branch.lock_write()
1584
# push into the master from this branch.
1585
self._basic_push(master_branch, overwrite, stop_revision)
1586
# and push into the target branch from this. Note that we push from
1587
# this branch again, because its considered the highest bandwidth
1589
result = self._basic_push(target, overwrite, stop_revision)
1590
result.master_branch = master_branch
1591
result.local_branch = target
1595
master_branch.unlock()
1598
result = self._basic_push(target, overwrite, stop_revision)
1599
# TODO: Why set master_branch and local_branch if there's no
1600
# binding? Maybe cleaner to just leave them unset? -- mbp
1602
result.master_branch = target
1603
result.local_branch = None
1607
def _basic_push(self, target, overwrite, stop_revision):
1608
"""Basic implementation of push without bound branches or hooks.
1610
Must be called with self read locked and target write locked.
1612
result = PushResult()
1613
result.source_branch = self
1614
result.target_branch = target
1615
result.old_revno, result.old_revid = target.last_revision_info()
1617
target.update_revisions(self, stop_revision)
1618
except errors.DivergedBranches:
1622
target.set_revision_history(self.revision_history())
1623
result.tag_conflicts = self.tags.merge_to(target.tags, overwrite)
1624
result.new_revno, result.new_revid = target.last_revision_info()
1627
def get_parent(self):
1628
"""See Branch.get_parent."""
1630
assert self.base[-1] == '/'
1631
parent = self._get_parent_location()
1634
# This is an old-format absolute path to a local branch
1635
# turn it into a url
1636
if parent.startswith('/'):
1637
parent = urlutils.local_path_to_url(parent.decode('utf8'))
1639
return urlutils.join(self.base[:-1], parent)
1640
except errors.InvalidURLJoin, e:
1641
raise errors.InaccessibleParent(parent, self.base)
1643
def set_push_location(self, location):
1644
"""See Branch.set_push_location."""
1645
self.get_config().set_user_option(
1646
'push_location', location,
1647
store=_mod_config.STORE_LOCATION_NORECURSE)
1650
def set_parent(self, url):
1651
"""See Branch.set_parent."""
1652
# TODO: Maybe delete old location files?
1653
# URLs should never be unicode, even on the local fs,
1654
# FIXUP this and get_parent in a future branch format bump:
1655
# read and rewrite the file, and have the new format code read
1656
# using .get not .get_utf8. RBC 20060125
1658
if isinstance(url, unicode):
1660
url = url.encode('ascii')
1661
except UnicodeEncodeError:
1662
raise errors.InvalidURL(url,
1663
"Urls must be 7-bit ascii, "
1664
"use bzrlib.urlutils.escape")
1665
url = urlutils.relative_url(self.base, url)
1666
self._set_parent_location(url)
1668
def _set_parent_location(self, url):
1670
self.control_files._transport.delete('parent')
1672
assert isinstance(url, str)
1673
self.control_files.put_bytes('parent', url + '\n')
1676
class BzrBranch5(BzrBranch):
1677
"""A format 5 branch. This supports new features over plain branches.
1679
It has support for a master_branch which is the data for bound branches.
1687
super(BzrBranch5, self).__init__(_format=_format,
1688
_control_files=_control_files,
1690
_repository=_repository)
1693
def pull(self, source, overwrite=False, stop_revision=None,
1694
run_hooks=True, possible_transports=None):
1695
"""Pull from source into self, updating my master if any.
1697
:param run_hooks: Private parameter - if false, this branch
1698
is being called because it's the master of the primary branch,
1699
so it should not run its hooks.
1701
bound_location = self.get_bound_location()
1702
master_branch = None
1703
if bound_location and source.base != bound_location:
1704
# not pulling from master, so we need to update master.
1705
master_branch = self.get_master_branch(possible_transports)
1706
master_branch.lock_write()
1709
# pull from source into master.
1710
master_branch.pull(source, overwrite, stop_revision,
1712
return super(BzrBranch5, self).pull(source, overwrite,
1713
stop_revision, _hook_master=master_branch,
1714
run_hooks=run_hooks)
1717
master_branch.unlock()
1719
def get_bound_location(self):
1721
return self.control_files.get_utf8('bound').read()[:-1]
1722
except errors.NoSuchFile:
1726
def get_master_branch(self, possible_transports=None):
1727
"""Return the branch we are bound to.
1729
:return: Either a Branch, or None
1731
This could memoise the branch, but if thats done
1732
it must be revalidated on each new lock.
1733
So for now we just don't memoise it.
1734
# RBC 20060304 review this decision.
1736
bound_loc = self.get_bound_location()
1740
return Branch.open(bound_loc,
1741
possible_transports=possible_transports)
1742
except (errors.NotBranchError, errors.ConnectionError), e:
1743
raise errors.BoundBranchConnectionFailure(
1747
def set_bound_location(self, location):
1748
"""Set the target where this branch is bound to.
1750
:param location: URL to the target branch
1753
self.control_files.put_utf8('bound', location+'\n')
1756
self.control_files._transport.delete('bound')
1757
except errors.NoSuchFile:
1762
def bind(self, other):
1763
"""Bind this branch to the branch other.
1765
This does not push or pull data between the branches, though it does
1766
check for divergence to raise an error when the branches are not
1767
either the same, or one a prefix of the other. That behaviour may not
1768
be useful, so that check may be removed in future.
1770
:param other: The branch to bind to
1773
# TODO: jam 20051230 Consider checking if the target is bound
1774
# It is debatable whether you should be able to bind to
1775
# a branch which is itself bound.
1776
# Committing is obviously forbidden,
1777
# but binding itself may not be.
1778
# Since we *have* to check at commit time, we don't
1779
# *need* to check here
1781
# we want to raise diverged if:
1782
# last_rev is not in the other_last_rev history, AND
1783
# other_last_rev is not in our history, and do it without pulling
1785
self.set_bound_location(other.base)
1789
"""If bound, unbind"""
1790
return self.set_bound_location(None)
1793
def update(self, possible_transports=None):
1794
"""Synchronise this branch with the master branch if any.
1796
:return: None or the last_revision that was pivoted out during the
1799
master = self.get_master_branch(possible_transports)
1800
if master is not None:
1801
old_tip = _mod_revision.ensure_null(self.last_revision())
1802
self.pull(master, overwrite=True)
1803
if self.repository.get_graph().is_ancestor(old_tip,
1804
_mod_revision.ensure_null(self.last_revision())):
1810
class BzrBranch6(BzrBranch5):
1813
def last_revision_info(self):
1814
revision_string = self.control_files.get('last-revision').read()
1815
revno, revision_id = revision_string.rstrip('\n').split(' ', 1)
1816
revision_id = cache_utf8.get_cached_utf8(revision_id)
1818
return revno, revision_id
1820
def _write_last_revision_info(self, revno, revision_id):
1821
"""Simply write out the revision id, with no checks.
1823
Use set_last_revision_info to perform this safely.
1825
Does not update the revision_history cache.
1826
Intended to be called by set_last_revision_info and
1827
_write_revision_history.
1829
assert revision_id is not None, "Use NULL_REVISION, not None"
1830
out_string = '%d %s\n' % (revno, revision_id)
1831
self.control_files.put_bytes('last-revision', out_string)
1834
def set_last_revision_info(self, revno, revision_id):
1835
revision_id = _mod_revision.ensure_null(revision_id)
1836
if self._get_append_revisions_only():
1837
self._check_history_violation(revision_id)
1838
self._write_last_revision_info(revno, revision_id)
1839
self._clear_cached_state()
1841
def _check_history_violation(self, revision_id):
1842
last_revision = _mod_revision.ensure_null(self.last_revision())
1843
if _mod_revision.is_null(last_revision):
1845
if last_revision not in self._lefthand_history(revision_id):
1846
raise errors.AppendRevisionsOnlyViolation(self.base)
1848
def _gen_revision_history(self):
1849
"""Generate the revision history from last revision
1851
history = list(self.repository.iter_reverse_revision_history(
1852
self.last_revision()))
1856
def _write_revision_history(self, history):
1857
"""Factored out of set_revision_history.
1859
This performs the actual writing to disk, with format-specific checks.
1860
It is intended to be called by BzrBranch5.set_revision_history.
1862
if len(history) == 0:
1863
last_revision = 'null:'
1865
if history != self._lefthand_history(history[-1]):
1866
raise errors.NotLefthandHistory(history)
1867
last_revision = history[-1]
1868
if self._get_append_revisions_only():
1869
self._check_history_violation(last_revision)
1870
self._write_last_revision_info(len(history), last_revision)
1873
def _set_parent_location(self, url):
1874
"""Set the parent branch"""
1875
self._set_config_location('parent_location', url, make_relative=True)
1878
def _get_parent_location(self):
1879
"""Set the parent branch"""
1880
return self._get_config_location('parent_location')
1882
def set_push_location(self, location):
1883
"""See Branch.set_push_location."""
1884
self._set_config_location('push_location', location)
1886
def set_bound_location(self, location):
1887
"""See Branch.set_push_location."""
1889
config = self.get_config()
1890
if location is None:
1891
if config.get_user_option('bound') != 'True':
1894
config.set_user_option('bound', 'False', warn_masked=True)
1897
self._set_config_location('bound_location', location,
1899
config.set_user_option('bound', 'True', warn_masked=True)
1902
def _get_bound_location(self, bound):
1903
"""Return the bound location in the config file.
1905
Return None if the bound parameter does not match"""
1906
config = self.get_config()
1907
config_bound = (config.get_user_option('bound') == 'True')
1908
if config_bound != bound:
1910
return self._get_config_location('bound_location', config=config)
1912
def get_bound_location(self):
1913
"""See Branch.set_push_location."""
1914
return self._get_bound_location(True)
1916
def get_old_bound_location(self):
1917
"""See Branch.get_old_bound_location"""
1918
return self._get_bound_location(False)
1920
def set_append_revisions_only(self, enabled):
1925
self.get_config().set_user_option('append_revisions_only', value,
1928
def _get_append_revisions_only(self):
1929
value = self.get_config().get_user_option('append_revisions_only')
1930
return value == 'True'
1932
def _synchronize_history(self, destination, revision_id):
1933
"""Synchronize last revision and revision history between branches.
1935
This version is most efficient when the destination is also a
1936
BzrBranch6, but works for BzrBranch5, as long as the destination's
1937
repository contains all the lefthand ancestors of the intended
1938
last_revision. If not, set_last_revision_info will fail.
1940
:param destination: The branch to copy the history into
1941
:param revision_id: The revision-id to truncate history at. May
1942
be None to copy complete history.
1944
source_revno, source_revision_id = self.last_revision_info()
1945
if revision_id is None:
1946
revno, revision_id = source_revno, source_revision_id
1947
elif source_revision_id == revision_id:
1948
# we know the revno without needing to walk all of history
1949
revno = source_revno
1951
# To figure out the revno for a random revision, we need to build
1952
# the revision history, and count its length.
1953
# We don't care about the order, just how long it is.
1954
# Alternatively, we could start at the current location, and count
1955
# backwards. But there is no guarantee that we will find it since
1956
# it may be a merged revision.
1957
revno = len(list(self.repository.iter_reverse_revision_history(
1959
destination.set_last_revision_info(revno, revision_id)
1961
def _make_tags(self):
1962
return BasicTags(self)
1965
def generate_revision_history(self, revision_id, last_rev=None,
1967
"""See BzrBranch5.generate_revision_history"""
1968
history = self._lefthand_history(revision_id, last_rev, other_branch)
1969
revno = len(history)
1970
self.set_last_revision_info(revno, revision_id)
1973
######################################################################
1974
# results of operations
1977
class _Result(object):
1979
def _show_tag_conficts(self, to_file):
1980
if not getattr(self, 'tag_conflicts', None):
1982
to_file.write('Conflicting tags:\n')
1983
for name, value1, value2 in self.tag_conflicts:
1984
to_file.write(' %s\n' % (name, ))
1987
class PullResult(_Result):
1988
"""Result of a Branch.pull operation.
1990
:ivar old_revno: Revision number before pull.
1991
:ivar new_revno: Revision number after pull.
1992
:ivar old_revid: Tip revision id before pull.
1993
:ivar new_revid: Tip revision id after pull.
1994
:ivar source_branch: Source (local) branch object.
1995
:ivar master_branch: Master branch of the target, or None.
1996
:ivar target_branch: Target/destination branch object.
2000
# DEPRECATED: pull used to return the change in revno
2001
return self.new_revno - self.old_revno
2003
def report(self, to_file):
2005
if self.old_revid == self.new_revid:
2006
to_file.write('No revisions to pull.\n')
2008
to_file.write('Now on revision %d.\n' % self.new_revno)
2009
self._show_tag_conficts(to_file)
2012
class PushResult(_Result):
2013
"""Result of a Branch.push operation.
2015
:ivar old_revno: Revision number before push.
2016
:ivar new_revno: Revision number after push.
2017
:ivar old_revid: Tip revision id before push.
2018
:ivar new_revid: Tip revision id after push.
2019
:ivar source_branch: Source branch object.
2020
:ivar master_branch: Master branch of the target, or None.
2021
:ivar target_branch: Target/destination branch object.
2025
# DEPRECATED: push used to return the change in revno
2026
return self.new_revno - self.old_revno
2028
def report(self, to_file):
2029
"""Write a human-readable description of the result."""
2030
if self.old_revid == self.new_revid:
2031
to_file.write('No new revisions to push.\n')
2033
to_file.write('Pushed up to revision %d.\n' % self.new_revno)
2034
self._show_tag_conficts(to_file)
2037
class BranchCheckResult(object):
2038
"""Results of checking branch consistency.
2043
def __init__(self, branch):
2044
self.branch = branch
2046
def report_results(self, verbose):
2047
"""Report the check results via trace.note.
2049
:param verbose: Requests more detailed display of what was checked,
2052
note('checked branch %s format %s',
2054
self.branch._format)
2057
class Converter5to6(object):
2058
"""Perform an in-place upgrade of format 5 to format 6"""
2060
def convert(self, branch):
2061
# Data for 5 and 6 can peacefully coexist.
2062
format = BzrBranchFormat6()
2063
new_branch = format.open(branch.bzrdir, _found=True)
2065
# Copy source data into target
2066
new_branch.set_last_revision_info(*branch.last_revision_info())
2067
new_branch.set_parent(branch.get_parent())
2068
new_branch.set_bound_location(branch.get_bound_location())
2069
new_branch.set_push_location(branch.get_push_location())
2071
# New branch has no tags by default
2072
new_branch.tags._set_tag_dict({})
2074
# Copying done; now update target format
2075
new_branch.control_files.put_utf8('format',
2076
format.get_format_string())
2078
# Clean up old files
2079
new_branch.control_files._transport.delete('revision-history')
2081
branch.set_parent(None)
2082
except errors.NoSuchFile:
2084
branch.set_bound_location(None)
added
removed
bzrlib/branch.py
