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# Copyright (C) 2005, 2006, 2007 Canonical Ltd
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# Copyright (C) 2005 Canonical Ltd
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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from cStringIO import StringIO
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from bzrlib.lazy_import import lazy_import
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lazy_import(globals(), """
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from warnings import warn
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import sys, os, os.path, random, time, sha, sets, types, re, shutil, tempfile
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import traceback, socket, fnmatch, difflib, time
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from binascii import hexlify
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config as _mod_config,
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revision as _mod_revision,
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from bzrlib.config import BranchConfig, TreeConfig
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from bzrlib.lockable_files import LockableFiles, TransportLock
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from bzrlib.tag import (
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from bzrlib.decorators import needs_read_lock, needs_write_lock
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from bzrlib.errors import (BzrError, BzrCheckError, DivergedBranches,
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HistoryMissing, InvalidRevisionId,
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InvalidRevisionNumber, LockError, NoSuchFile,
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NoSuchRevision, NotVersionedError,
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NotBranchError, UninitializableFormat,
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UnlistableStore, UnlistableBranch,
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from bzrlib.hooks import Hooks
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from bzrlib.symbol_versioning import (deprecated_function,
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zero_eight, zero_nine, zero_sixteen,
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from bzrlib.trace import mutter, note
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BZR_BRANCH_FORMAT_4 = "Bazaar-NG branch, format 0.0.4\n"
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BZR_BRANCH_FORMAT_5 = "Bazaar-NG branch, format 5\n"
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BZR_BRANCH_FORMAT_6 = "Bazaar 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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from inventory import Inventory
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from trace import mutter, note
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from tree import Tree, EmptyTree, RevisionTree, WorkingTree
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from inventory import InventoryEntry, Inventory
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from osutils import isdir, quotefn, isfile, uuid, sha_file, username, chomp, \
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format_date, compact_date, pumpfile, user_email, rand_bytes, splitpath, \
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joinpath, sha_string, file_kind, local_time_offset, appendpath
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from store import ImmutableStore
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from revision import Revision
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from errors import bailout, BzrError
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from textui import show_status
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from diff import diff_trees
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BZR_BRANCH_FORMAT = "Bazaar-NG branch, format 0.0.4\n"
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## TODO: Maybe include checks for common corruption of newlines, etc?
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def find_branch_root(f=None):
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"""Find the branch root enclosing f, or pwd.
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It is not necessary that f exists.
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Basically we keep looking up until we find the control directory or
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elif hasattr(os.path, 'realpath'):
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f = os.path.realpath(f)
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f = os.path.abspath(f)
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if os.path.exists(os.path.join(f, bzrlib.BZRDIR)):
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head, tail = os.path.split(f)
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# reached the root, whatever that may be
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raise BzrError('%r is not in a branch' % orig_f)
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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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TODO: Perhaps use different stores for different classes of object,
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so that we can keep track of how much space each one uses,
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or garbage-collect them.
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TODO: Add a RemoteBranch subclass. For the basic case of read-only
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HTTP access this should be very easy by,
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just redirecting controlfile access into HTTP requests.
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We would need a RemoteStore working similarly.
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TODO: Keep the on-disk branch locked while the object exists.
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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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def break_lock(self):
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"""Break a lock if one is present from another instance.
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Uses the ui factory to ask for confirmation if the lock may be from
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This will probe the repository for its lock as well.
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self.control_files.break_lock()
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self.repository.break_lock()
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master = self.get_master_branch()
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if master is not None:
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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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def __init__(self, base, init=False, find_root=True):
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"""Create new branch object at a particular location.
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base -- Base directory for the branch.
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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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init -- If True, create new control files in a previously
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unversioned directory. If False, the branch must already
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find_root -- If true and init is false, find the root of the
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existing branch containing base.
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In the test suite, creation of new trees is tested using the
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`ScratchBranch` class.
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self.base = os.path.realpath(base)
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self.base = find_branch_root(base)
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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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self.base = os.path.realpath(base)
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if not isdir(self.controlfilename('.')):
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bailout("not a bzr branch: %s" % quotefn(base),
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['use "bzr init" to initialize a new working tree',
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'current bzr can only operate from top-of-tree'])
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self.text_store = ImmutableStore(self.controlfilename('text-store'))
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self.revision_store = ImmutableStore(self.controlfilename('revision-store'))
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self.inventory_store = ImmutableStore(self.controlfilename('inventory-store'))
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return '%s(%r)' % (self.__class__.__name__, self.base)
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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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"""Return absolute filename for something in the branch"""
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return os.path.join(self.base, name)
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def relpath(self, path):
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"""Return path relative to this branch of something inside it.
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Raises an error if path is not in this branch."""
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rp = os.path.realpath(path)
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if not rp.startswith(self.base):
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bailout("path %r is not within branch %r" % (rp, self.base))
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rp = rp[len(self.base):]
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rp = rp.lstrip(os.sep)
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def controlfilename(self, file_or_path):
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"""Return location relative to branch."""
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if isinstance(file_or_path, types.StringTypes):
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file_or_path = [file_or_path]
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return os.path.join(self.base, bzrlib.BZRDIR, *file_or_path)
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def controlfile(self, file_or_path, mode='r'):
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"""Open a control file for this branch.
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There are two classes of file in the control directory: text
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and binary. binary files are untranslated byte streams. Text
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control files are stored with Unix newlines and in UTF-8, even
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if the platform or locale defaults are different.
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fn = self.controlfilename(file_or_path)
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if mode == 'rb' or mode == 'wb':
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return file(fn, mode)
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elif mode == 'r' or mode == 'w':
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# open in binary mode anyhow so there's no newline translation;
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# codecs uses line buffering by default; don't want that.
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return codecs.open(fn, mode + 'b', 'utf-8',
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from_branch.lock_read()
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if last_revision is None:
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pb.update('get source history')
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last_revision = from_branch.last_revision()
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if last_revision is None:
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last_revision = _mod_revision.NULL_REVISION
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return self.repository.fetch(from_branch.repository,
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revision_id=last_revision,
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if nested_pb is not None:
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def get_bound_location(self):
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"""Return the URL of the branch we are bound to.
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Older format branches cannot bind, please be sure to use a metadir
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def get_old_bound_location(self):
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"""Return the URL of the branch we used to be bound to
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raise errors.UpgradeRequired(self.base)
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def get_commit_builder(self, parents, config=None, timestamp=None,
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timezone=None, committer=None, revprops=None,
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"""Obtain a CommitBuilder for this branch.
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:param parents: Revision ids of the parents of the new revision.
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:param config: Optional configuration to use.
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:param timestamp: Optional timestamp recorded for commit.
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:param timezone: Optional timezone for timestamp.
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:param committer: Optional committer to set for commit.
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:param revprops: Optional dictionary of revision properties.
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:param revision_id: Optional revision id.
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config = self.get_config()
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return self.repository.get_commit_builder(self, parents, config,
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timestamp, timezone, committer, revprops, revision_id)
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def get_master_branch(self, 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 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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raise BzrError("invalid controlfile mode %r" % mode)
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def _make_control(self):
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os.mkdir(self.controlfilename([]))
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self.controlfile('README', 'w').write(
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"This is a Bazaar-NG control directory.\n"
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"Do not change any files in this directory.")
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self.controlfile('branch-format', 'w').write(BZR_BRANCH_FORMAT)
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for d in ('text-store', 'inventory-store', 'revision-store'):
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os.mkdir(self.controlfilename(d))
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for f in ('revision-history', 'merged-patches',
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'pending-merged-patches', 'branch-name'):
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self.controlfile(f, 'w').write('')
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mutter('created control directory in ' + self.base)
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Inventory().write_xml(self.controlfile('inventory','w'))
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def _check_format(self):
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"""Check this branch format is supported.
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The current tool only supports the current unstable format.
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In the future, we might need different in-memory Branch
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classes to support downlevel branches. But not yet.
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# This ignores newlines so that we can open branches created
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# on Windows from Linux and so on. I think it might be better
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# to always make all internal files in unix format.
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fmt = self.controlfile('branch-format', 'r').read()
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fmt.replace('\r\n', '')
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if fmt != BZR_BRANCH_FORMAT:
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bailout('sorry, branch format %r not supported' % fmt,
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['use a different bzr version',
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'or remove the .bzr directory and "bzr init" again'])
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def read_working_inventory(self):
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"""Read the working inventory."""
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# ElementTree does its own conversion from UTF-8, so open in
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inv = Inventory.read_xml(self.controlfile('inventory', 'rb'))
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mutter("loaded inventory of %d items in %f"
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% (len(inv), time.time() - before))
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def _write_inventory(self, inv):
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"""Update the working inventory.
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That is to say, the inventory describing changes underway, that
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will be committed to the next revision.
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## TODO: factor out to atomicfile? is rename safe on windows?
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## TODO: Maybe some kind of clean/dirty marker on inventory?
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tmpfname = self.controlfilename('inventory.tmp')
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tmpf = file(tmpfname, 'wb')
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inv_fname = self.controlfilename('inventory')
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if sys.platform == 'win32':
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os.rename(tmpfname, inv_fname)
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mutter('wrote working inventory')
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inventory = property(read_working_inventory, _write_inventory, None,
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"""Inventory for the working copy.""")
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def add(self, files, verbose=False):
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"""Make files versioned.
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Note that the command line normally calls smart_add instead.
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This puts the files in the Added state, so that they will be
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recorded by the next commit.
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TODO: Perhaps have an option to add the ids even if the files do
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TODO: Perhaps return the ids of the files? But then again it
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is easy to retrieve them if they're needed.
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TODO: Option to specify file id.
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TODO: Adding a directory should optionally recurse down and
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add all non-ignored children. Perhaps do that in a
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>>> b = ScratchBranch(files=['foo'])
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>>> 'foo' in b.unknowns()
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>>> 'foo' in b.unknowns()
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>>> bool(b.inventory.path2id('foo'))
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Traceback (most recent call last):
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BzrError: ('foo is already versioned', [])
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>>> b.add(['nothere'])
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Traceback (most recent call last):
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BzrError: ('cannot add: not a regular file or directory: nothere', [])
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# TODO: Re-adding a file that is removed in the working copy
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# should probably put it back with the previous ID.
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if isinstance(files, types.StringTypes):
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inv = self.read_working_inventory()
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if is_control_file(f):
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bailout("cannot add control file %s" % quotefn(f))
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bailout("cannot add top-level %r" % f)
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fullpath = os.path.normpath(self.abspath(f))
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kind = file_kind(fullpath)
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# maybe something better?
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bailout('cannot add: not a regular file or directory: %s' % quotefn(f))
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if kind != 'file' and kind != 'directory':
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bailout('cannot add: not a regular file or directory: %s' % quotefn(f))
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file_id = gen_file_id(f)
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inv.add_path(f, kind=kind, file_id=file_id)
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show_status('A', kind, quotefn(f))
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mutter("add file %s file_id:{%s} kind=%r" % (f, file_id, kind))
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self._write_inventory(inv)
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def print_file(self, file, revno):
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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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tree = self.revision_tree(self.lookup_revision(revno))
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# use inventory as it was in that revision
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file_id = tree.inventory.path2id(file)
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bailout("%r is not present in revision %d" % (file, revno))
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tree.print_file(file_id)
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def remove(self, files, verbose=False):
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"""Mark nominated files for removal from the inventory.
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This does not remove their text. This does not run on
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TODO: Refuse to remove modified files unless --force is given?
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>>> b = ScratchBranch(files=['foo'])
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>>> b.inventory.has_filename('foo')
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>>> b.working_tree().has_filename('foo')
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>>> b.inventory.has_filename('foo')
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>>> b = ScratchBranch(files=['foo'])
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>>> b.inventory.has_filename('foo')
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>>> b.basis_tree().has_filename('foo')
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>>> b.working_tree().has_filename('foo')
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TODO: Do something useful with directories.
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TODO: Should this remove the text or not? Tough call; not
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removing may be useful and the user can just use use rm, and
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is the opposite of add. Removing it is consistent with most
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other tools. Maybe an option.
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## TODO: Normalize names
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## TODO: Remove nested loops; better scalability
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if isinstance(files, types.StringTypes):
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tree = self.working_tree()
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# do this before any modifications
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bailout("cannot remove unversioned file %s" % quotefn(f))
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mutter("remove inventory entry %s {%s}" % (quotefn(f), fid))
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# having remove it, it must be either ignored or unknown
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if tree.is_ignored(f):
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show_status(new_status, inv[fid].kind, quotefn(f))
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self._write_inventory(inv)
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"""Return all unknown files.
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These are files in the working directory that are not versioned or
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control files or ignored.
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>>> b = ScratchBranch(files=['foo', 'foo~'])
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>>> list(b.unknowns())
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>>> list(b.unknowns())
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>>> list(b.unknowns())
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return self.working_tree().unknowns()
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def commit(self, message, timestamp=None, timezone=None,
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"""Commit working copy as a new revision.
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The basic approach is to add all the file texts into the
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store, then the inventory, then make a new revision pointing
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to that inventory and store that.
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This is not quite safe if the working copy changes during the
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commit; for the moment that is simply not allowed. A better
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approach is to make a temporary copy of the files before
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computing their hashes, and then add those hashes in turn to
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the inventory. This should mean at least that there are no
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broken hash pointers. There is no way we can get a snapshot
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of the whole directory at an instant. This would also have to
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be robust against files disappearing, moving, etc. So the
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whole thing is a bit hard.
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timestamp -- if not None, seconds-since-epoch for a
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postdated/predated commit.
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## TODO: Show branch names
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# TODO: Don't commit if there are no changes, unless forced?
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# First walk over the working inventory; and both update that
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# and also build a new revision inventory. The revision
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# inventory needs to hold the text-id, sha1 and size of the
448
# actual file versions committed in the revision. (These are
449
# not present in the working inventory.) We also need to
450
# detect missing/deleted files, and remove them from the
453
work_inv = self.read_working_inventory()
455
basis = self.basis_tree()
456
basis_inv = basis.inventory
458
for path, entry in work_inv.iter_entries():
459
## TODO: Cope with files that have gone missing.
461
## TODO: Check that the file kind has not changed from the previous
462
## revision of this file (if any).
466
p = self.abspath(path)
467
file_id = entry.file_id
468
mutter('commit prep file %s, id %r ' % (p, file_id))
470
if not os.path.exists(p):
471
mutter(" file is missing, removing from inventory")
473
show_status('D', entry.kind, quotefn(path))
474
missing_ids.append(file_id)
477
# TODO: Handle files that have been deleted
479
# TODO: Maybe a special case for empty files? Seems a
480
# waste to store them many times.
484
if basis_inv.has_id(file_id):
485
old_kind = basis_inv[file_id].kind
486
if old_kind != entry.kind:
487
bailout("entry %r changed kind from %r to %r"
488
% (file_id, old_kind, entry.kind))
490
if entry.kind == 'directory':
492
bailout("%s is entered as directory but not a directory" % quotefn(p))
493
elif entry.kind == 'file':
495
bailout("%s is entered as file but is not a file" % quotefn(p))
497
content = file(p, 'rb').read()
499
entry.text_sha1 = sha_string(content)
500
entry.text_size = len(content)
502
old_ie = basis_inv.has_id(file_id) and basis_inv[file_id]
504
and (old_ie.text_size == entry.text_size)
505
and (old_ie.text_sha1 == entry.text_sha1)):
506
## assert content == basis.get_file(file_id).read()
507
entry.text_id = basis_inv[file_id].text_id
508
mutter(' unchanged from previous text_id {%s}' %
512
entry.text_id = gen_file_id(entry.name)
513
self.text_store.add(content, entry.text_id)
514
mutter(' stored with text_id {%s}' % entry.text_id)
518
elif (old_ie.name == entry.name
519
and old_ie.parent_id == entry.parent_id):
524
show_status(state, entry.kind, quotefn(path))
526
for file_id in missing_ids:
527
# have to do this later so we don't mess up the iterator.
528
# since parents may be removed before their children we
531
# FIXME: There's probably a better way to do this; perhaps
532
# the workingtree should know how to filter itself.
533
if work_inv.has_id(file_id):
534
del work_inv[file_id]
537
inv_id = rev_id = _gen_revision_id(time.time())
539
inv_tmp = tempfile.TemporaryFile()
540
inv.write_xml(inv_tmp)
542
self.inventory_store.add(inv_tmp, inv_id)
543
mutter('new inventory_id is {%s}' % inv_id)
545
self._write_inventory(work_inv)
547
if timestamp == None:
548
timestamp = time.time()
550
if committer == None:
551
committer = username()
554
timezone = local_time_offset()
556
mutter("building commit log message")
557
rev = Revision(timestamp=timestamp,
560
precursor = self.last_patch(),
565
rev_tmp = tempfile.TemporaryFile()
566
rev.write_xml(rev_tmp)
568
self.revision_store.add(rev_tmp, rev_id)
569
mutter("new revision_id is {%s}" % rev_id)
571
## XXX: Everything up to here can simply be orphaned if we abort
572
## the commit; it will leave junk files behind but that doesn't
575
## TODO: Read back the just-generated changeset, and make sure it
576
## applies and recreates the right state.
578
## TODO: Also calculate and store the inventory SHA1
579
mutter("committing patch r%d" % (self.revno() + 1))
582
self.append_revision(rev_id)
585
note("commited r%d" % self.revno())
588
def append_revision(self, revision_id):
589
mutter("add {%s} to revision-history" % revision_id)
590
rev_history = self.revision_history()
592
tmprhname = self.controlfilename('revision-history.tmp')
593
rhname = self.controlfilename('revision-history')
595
f = file(tmprhname, 'wt')
596
rev_history.append(revision_id)
597
f.write('\n'.join(rev_history))
601
if sys.platform == 'win32':
603
os.rename(tmprhname, rhname)
607
def get_revision(self, revision_id):
608
"""Return the Revision object for a named revision"""
609
r = Revision.read_xml(self.revision_store[revision_id])
610
assert r.revision_id == revision_id
614
def get_inventory(self, inventory_id):
615
"""Get Inventory object by hash.
617
TODO: Perhaps for this and similar methods, take a revision
618
parameter which can be either an integer revno or a
620
i = Inventory.read_xml(self.inventory_store[inventory_id])
624
def get_revision_inventory(self, revision_id):
625
"""Return inventory of a past revision."""
626
if revision_id == None:
629
return self.get_inventory(self.get_revision(revision_id).inventory_id)
406
632
def revision_history(self):
407
633
"""Return sequence of revision hashes on to this branch.
409
This method will cache the revision history for as long as it is safe to
635
>>> ScratchBranch().revision_history()
412
if self._revision_history_cache is not None:
413
history = self._revision_history_cache
415
history = self._gen_revision_history()
416
self._cache_revision_history(history)
638
return [chomp(l) for l in self.controlfile('revision-history', 'r').readlines()]
420
642
"""Return current revision number for this branch.
422
644
That is equivalent to the number of revisions committed to
647
>>> b = ScratchBranch()
650
>>> b.commit('no foo')
425
654
return len(self.revision_history())
428
"""Older format branches cannot bind or unbind."""
429
raise errors.UpgradeRequired(self.base)
431
def set_append_revisions_only(self, enabled):
432
"""Older format branches are never restricted to append-only"""
433
raise errors.UpgradeRequired(self.base)
435
def last_revision(self):
436
"""Return last revision id, or None"""
657
def last_patch(self):
658
"""Return last patch hash, or None if no history.
660
>>> ScratchBranch().last_patch() == None
437
663
ph = self.revision_history()
441
return _mod_revision.NULL_REVISION
443
def last_revision_info(self):
444
"""Return information about the last revision.
446
:return: A tuple (revno, last_revision_id).
448
rh = self.revision_history()
451
return (revno, rh[-1])
453
return (0, _mod_revision.NULL_REVISION)
455
def missing_revisions(self, other, stop_revision=None):
456
"""Return a list of new revisions that would perfectly fit.
458
If self and other have not diverged, return a list of the revisions
459
present in other, but missing from self.
461
self_history = self.revision_history()
462
self_len = len(self_history)
463
other_history = other.revision_history()
464
other_len = len(other_history)
465
common_index = min(self_len, other_len) -1
466
if common_index >= 0 and \
467
self_history[common_index] != other_history[common_index]:
468
raise DivergedBranches(self, other)
470
if stop_revision is None:
471
stop_revision = other_len
473
assert isinstance(stop_revision, int)
474
if stop_revision > other_len:
475
raise errors.NoSuchRevision(self, stop_revision)
476
return other_history[self_len:stop_revision]
478
def update_revisions(self, other, stop_revision=None):
479
"""Pull in new perfect-fit revisions.
481
:param other: Another Branch to pull from
482
:param stop_revision: Updated until the given revision
485
raise NotImplementedError(self.update_revisions)
487
def revision_id_to_revno(self, revision_id):
488
"""Given a revision id, return its revno"""
489
if _mod_revision.is_null(revision_id):
491
revision_id = osutils.safe_revision_id(revision_id)
492
history = self.revision_history()
494
return history.index(revision_id) + 1
496
raise errors.NoSuchRevision(self, revision_id)
498
def get_rev_id(self, revno, history=None):
499
"""Find the revision id of the specified revno."""
670
def lookup_revision(self, revno):
671
"""Return revision hash for revision number."""
501
return _mod_revision.NULL_REVISION
503
history = self.revision_history()
504
if revno <= 0 or revno > len(history):
505
raise errors.NoSuchRevision(self, revno)
506
return history[revno - 1]
508
def pull(self, source, overwrite=False, stop_revision=None):
509
"""Mirror source into this branch.
511
This branch is considered to be 'local', having low latency.
513
:returns: PullResult instance
515
raise NotImplementedError(self.pull)
517
def push(self, target, overwrite=False, stop_revision=None):
518
"""Mirror this branch into target.
520
This branch is considered to be 'local', having low latency.
522
raise NotImplementedError(self.push)
676
# list is 0-based; revisions are 1-based
677
return self.revision_history()[revno-1]
679
raise BzrError("no such revision %s" % revno)
682
def revision_tree(self, revision_id):
683
"""Return Tree for a revision on this branch.
685
`revision_id` may be None for the null revision, in which case
686
an `EmptyTree` is returned."""
688
if revision_id == None:
691
inv = self.get_revision_inventory(revision_id)
692
return RevisionTree(self.text_store, inv)
695
def working_tree(self):
696
"""Return a `Tree` for the working copy."""
697
return WorkingTree(self.base, self.read_working_inventory())
524
700
def basis_tree(self):
525
"""Return `Tree` object for last revision."""
526
return self.repository.revision_tree(self.last_revision())
701
"""Return `Tree` object for last revision.
703
If there are no revisions yet, return an `EmptyTree`.
705
>>> b = ScratchBranch(files=['foo'])
706
>>> b.basis_tree().has_filename('foo')
708
>>> b.working_tree().has_filename('foo')
711
>>> b.commit('add foo')
712
>>> b.basis_tree().has_filename('foo')
715
r = self.last_patch()
719
return RevisionTree(self.text_store, self.get_revision_inventory(r))
723
def write_log(self, show_timezone='original', verbose=False):
724
"""Write out human-readable log of commits to this branch
726
utc -- If true, show dates in universal time, not local time."""
727
## TODO: Option to choose either original, utc or local timezone
730
for p in self.revision_history():
732
print 'revno:', revno
733
## TODO: Show hash if --id is given.
734
##print 'revision-hash:', p
735
rev = self.get_revision(p)
736
print 'committer:', rev.committer
737
print 'timestamp: %s' % (format_date(rev.timestamp, rev.timezone or 0,
740
## opportunistic consistency check, same as check_patch_chaining
741
if rev.precursor != precursor:
742
bailout("mismatched precursor!")
746
print ' (no message)'
748
for l in rev.message.split('\n'):
751
if verbose == True and precursor != None:
752
print 'changed files:'
753
tree = self.revision_tree(p)
754
prevtree = self.revision_tree(precursor)
756
for file_state, fid, old_name, new_name, kind in \
757
diff_trees(prevtree, tree, ):
758
if file_state == 'A' or file_state == 'M':
759
show_status(file_state, kind, new_name)
760
elif file_state == 'D':
761
show_status(file_state, kind, old_name)
762
elif file_state == 'R':
763
show_status(file_state, kind,
764
old_name + ' => ' + new_name)
528
770
def rename_one(self, from_rel, to_rel):
529
771
"""Rename one file.
531
773
This can change the directory or the filename or both.
533
raise NotImplementedError(self.rename_one)
775
tree = self.working_tree()
777
if not tree.has_filename(from_rel):
778
bailout("can't rename: old working file %r does not exist" % from_rel)
779
if tree.has_filename(to_rel):
780
bailout("can't rename: new working file %r already exists" % to_rel)
782
file_id = inv.path2id(from_rel)
784
bailout("can't rename: old name %r is not versioned" % from_rel)
786
if inv.path2id(to_rel):
787
bailout("can't rename: new name %r is already versioned" % to_rel)
789
to_dir, to_tail = os.path.split(to_rel)
790
to_dir_id = inv.path2id(to_dir)
791
if to_dir_id == None and to_dir != '':
792
bailout("can't determine destination directory id for %r" % to_dir)
794
mutter("rename_one:")
795
mutter(" file_id {%s}" % file_id)
796
mutter(" from_rel %r" % from_rel)
797
mutter(" to_rel %r" % to_rel)
798
mutter(" to_dir %r" % to_dir)
799
mutter(" to_dir_id {%s}" % to_dir_id)
801
inv.rename(file_id, to_dir_id, to_tail)
803
print "%s => %s" % (from_rel, to_rel)
805
from_abs = self.abspath(from_rel)
806
to_abs = self.abspath(to_rel)
808
os.rename(from_abs, to_abs)
810
bailout("failed to rename %r to %r: %s"
811
% (from_abs, to_abs, e[1]),
812
["rename rolled back"])
814
self._write_inventory(inv)
535
818
def move(self, from_paths, to_name):
543
826
Note that to_name is only the last component of the new name;
544
827
this doesn't change the directory.
546
This returns a list of (from_path, to_path) pairs for each
549
raise NotImplementedError(self.move)
551
def get_parent(self):
552
"""Return the parent location of the branch.
554
This is the default location for push/pull/missing. The usual
555
pattern is that the user can override it by specifying a
558
raise NotImplementedError(self.get_parent)
560
def _set_config_location(self, name, url, config=None,
561
make_relative=False):
563
config = self.get_config()
567
url = urlutils.relative_url(self.base, url)
568
config.set_user_option(name, url, warn_masked=True)
570
def _get_config_location(self, name, config=None):
572
config = self.get_config()
573
location = config.get_user_option(name)
578
def get_submit_branch(self):
579
"""Return the submit location of the branch.
581
This is the default location for bundle. The usual
582
pattern is that the user can override it by specifying a
585
return self.get_config().get_user_option('submit_branch')
587
def set_submit_branch(self, location):
588
"""Return the submit location of the branch.
590
This is the default location for bundle. The usual
591
pattern is that the user can override it by specifying a
594
self.get_config().set_user_option('submit_branch', location,
597
def get_public_branch(self):
598
"""Return the public location of the branch.
600
This is is used by merge directives.
602
return self._get_config_location('public_branch')
604
def set_public_branch(self, location):
605
"""Return the submit location of the branch.
607
This is the default location for bundle. The usual
608
pattern is that the user can override it by specifying a
611
self._set_config_location('public_branch', location)
613
def get_push_location(self):
614
"""Return the None or the location to push this branch to."""
615
push_loc = self.get_config().get_user_option('push_location')
618
def set_push_location(self, location):
619
"""Set a new push location for this branch."""
620
raise NotImplementedError(self.set_push_location)
622
def set_parent(self, url):
623
raise NotImplementedError(self.set_parent)
627
"""Synchronise this branch with the master branch if any.
629
:return: None or the last_revision pivoted out during the update.
633
def check_revno(self, revno):
635
Check whether a revno corresponds to any revision.
636
Zero (the NULL revision) is considered valid.
639
self.check_real_revno(revno)
829
## TODO: Option to move IDs only
830
assert not isinstance(from_paths, basestring)
831
tree = self.working_tree()
833
to_abs = self.abspath(to_name)
834
if not isdir(to_abs):
835
bailout("destination %r is not a directory" % to_abs)
836
if not tree.has_filename(to_name):
837
bailout("destination %r not in working directory" % to_abs)
838
to_dir_id = inv.path2id(to_name)
839
if to_dir_id == None and to_name != '':
840
bailout("destination %r is not a versioned directory" % to_name)
841
to_dir_ie = inv[to_dir_id]
842
if to_dir_ie.kind not in ('directory', 'root_directory'):
843
bailout("destination %r is not a directory" % to_abs)
845
to_idpath = Set(inv.get_idpath(to_dir_id))
848
if not tree.has_filename(f):
849
bailout("%r does not exist in working tree" % f)
850
f_id = inv.path2id(f)
852
bailout("%r is not versioned" % f)
853
name_tail = splitpath(f)[-1]
854
dest_path = appendpath(to_name, name_tail)
855
if tree.has_filename(dest_path):
856
bailout("destination %r already exists" % dest_path)
857
if f_id in to_idpath:
858
bailout("can't move %r to a subdirectory of itself" % f)
860
# OK, so there's a race here, it's possible that someone will
861
# create a file in this interval and then the rename might be
862
# left half-done. But we should have caught most problems.
865
name_tail = splitpath(f)[-1]
866
dest_path = appendpath(to_name, name_tail)
867
print "%s => %s" % (f, dest_path)
868
inv.rename(inv.path2id(f), to_dir_id, name_tail)
870
os.rename(self.abspath(f), self.abspath(dest_path))
872
bailout("failed to rename %r to %r: %s" % (f, dest_path, e[1]),
873
["rename rolled back"])
875
self._write_inventory(inv)
879
def show_status(self, show_all=False):
880
"""Display single-line status for non-ignored working files.
882
The list is show sorted in order by file name.
884
>>> b = ScratchBranch(files=['foo', 'foo~'])
890
>>> b.commit("add foo")
892
>>> os.unlink(b.abspath('foo'))
896
TODO: Get state for single files.
899
# We have to build everything into a list first so that it can
900
# sorted by name, incorporating all the different sources.
902
# FIXME: Rather than getting things in random order and then sorting,
903
# just step through in order.
905
# Interesting case: the old ID for a file has been removed,
906
# but a new file has been created under that name.
908
old = self.basis_tree()
909
new = self.working_tree()
911
for fs, fid, oldname, newname, kind in diff_trees(old, new):
913
show_status(fs, kind,
914
oldname + ' => ' + newname)
915
elif fs == 'A' or fs == 'M':
916
show_status(fs, kind, newname)
918
show_status(fs, kind, oldname)
921
show_status(fs, kind, newname)
924
show_status(fs, kind, newname)
926
show_status(fs, kind, newname)
928
bailout("weird file state %r" % ((fs, fid),))
932
class ScratchBranch(Branch):
933
"""Special test class: a branch that cleans up after itself.
935
>>> b = ScratchBranch()
943
def __init__(self, files=[], dirs=[]):
944
"""Make a test branch.
946
This creates a temporary directory and runs init-tree in it.
948
If any files are listed, they are created in the working copy.
950
Branch.__init__(self, tempfile.mkdtemp(), init=True)
952
os.mkdir(self.abspath(d))
641
def check_real_revno(self, revno):
643
Check whether a revno corresponds to a real revision.
644
Zero (the NULL revision) is considered invalid
646
if revno < 1 or revno > self.revno():
647
raise InvalidRevisionNumber(revno)
650
def clone(self, to_bzrdir, revision_id=None):
651
"""Clone this branch into to_bzrdir preserving all semantic values.
653
revision_id: if not None, the revision history in the new branch will
654
be truncated to end with revision_id.
656
result = self._format.initialize(to_bzrdir)
657
self.copy_content_into(result, revision_id=revision_id)
661
def sprout(self, to_bzrdir, revision_id=None):
662
"""Create a new line of development from the branch, into to_bzrdir.
664
revision_id: if not None, the revision history in the new branch will
665
be truncated to end with revision_id.
667
result = self._format.initialize(to_bzrdir)
668
self.copy_content_into(result, revision_id=revision_id)
669
result.set_parent(self.bzrdir.root_transport.base)
672
def _synchronize_history(self, destination, revision_id):
673
"""Synchronize last revision and revision history between branches.
675
This version is most efficient when the destination is also a
676
BzrBranch5, but works for BzrBranch6 as long as the revision
677
history is the true lefthand parent history, and all of the revisions
678
are in the destination's repository. If not, set_revision_history
681
:param destination: The branch to copy the history into
682
:param revision_id: The revision-id to truncate history at. May
683
be None to copy complete history.
685
if revision_id == _mod_revision.NULL_REVISION:
687
new_history = self.revision_history()
688
if revision_id is not None and new_history != []:
689
revision_id = osutils.safe_revision_id(revision_id)
691
new_history = new_history[:new_history.index(revision_id) + 1]
693
rev = self.repository.get_revision(revision_id)
694
new_history = rev.get_history(self.repository)[1:]
695
destination.set_revision_history(new_history)
698
def copy_content_into(self, destination, revision_id=None):
699
"""Copy the content of self into destination.
701
revision_id: if not None, the revision history in the new branch will
702
be truncated to end with revision_id.
704
self._synchronize_history(destination, revision_id)
706
parent = self.get_parent()
707
except errors.InaccessibleParent, e:
708
mutter('parent was not accessible to copy: %s', e)
711
destination.set_parent(parent)
712
self.tags.merge_to(destination.tags)
716
"""Check consistency of the branch.
718
In particular this checks that revisions given in the revision-history
719
do actually match up in the revision graph, and that they're all
720
present in the repository.
722
Callers will typically also want to check the repository.
724
:return: A BranchCheckResult.
726
mainline_parent_id = None
727
for revision_id in self.revision_history():
729
revision = self.repository.get_revision(revision_id)
730
except errors.NoSuchRevision, e:
731
raise errors.BzrCheckError("mainline revision {%s} not in repository"
733
# In general the first entry on the revision history has no parents.
734
# But it's not illegal for it to have parents listed; this can happen
735
# in imports from Arch when the parents weren't reachable.
736
if mainline_parent_id is not None:
737
if mainline_parent_id not in revision.parent_ids:
738
raise errors.BzrCheckError("previous revision {%s} not listed among "
740
% (mainline_parent_id, revision_id))
741
mainline_parent_id = revision_id
742
return BranchCheckResult(self)
744
def _get_checkout_format(self):
745
"""Return the most suitable metadir for a checkout of this branch.
746
Weaves are used if this branch's repository uses weaves.
748
if isinstance(self.bzrdir, bzrdir.BzrDirPreSplitOut):
749
from bzrlib.repofmt import weaverepo
750
format = bzrdir.BzrDirMetaFormat1()
751
format.repository_format = weaverepo.RepositoryFormat7()
753
format = self.repository.bzrdir.checkout_metadir()
754
format.set_branch_format(self._format)
757
def create_checkout(self, to_location, revision_id=None,
759
"""Create a checkout of a branch.
761
:param to_location: The url to produce the checkout at
762
:param revision_id: The revision to check out
763
:param lightweight: If True, produce a lightweight checkout, otherwise,
764
produce a bound branch (heavyweight checkout)
765
:return: The tree of the created checkout
767
t = transport.get_transport(to_location)
770
format = self._get_checkout_format()
771
checkout = format.initialize_on_transport(t)
772
BranchReferenceFormat().initialize(checkout, self)
774
format = self._get_checkout_format()
775
checkout_branch = bzrdir.BzrDir.create_branch_convenience(
776
to_location, force_new_tree=False, format=format)
777
checkout = checkout_branch.bzrdir
778
checkout_branch.bind(self)
779
# pull up to the specified revision_id to set the initial
780
# branch tip correctly, and seed it with history.
781
checkout_branch.pull(self, stop_revision=revision_id)
782
tree = checkout.create_workingtree(revision_id)
783
basis_tree = tree.basis_tree()
784
basis_tree.lock_read()
786
for path, file_id in basis_tree.iter_references():
787
reference_parent = self.reference_parent(file_id, path)
788
reference_parent.create_checkout(tree.abspath(path),
789
basis_tree.get_reference_revision(file_id, path),
795
def reference_parent(self, file_id, path):
796
"""Return the parent branch for a tree-reference file_id
797
:param file_id: The file_id of the tree reference
798
:param path: The path of the file_id in the tree
799
:return: A branch associated with the file_id
801
# FIXME should provide multiple branches, based on config
802
return Branch.open(self.bzrdir.root_transport.clone(path).base)
804
def supports_tags(self):
805
return self._format.supports_tags()
808
class BranchFormat(object):
809
"""An encapsulation of the initialization and open routines for a format.
811
Formats provide three things:
812
* An initialization routine,
816
Formats are placed in an dict by their format string for reference
817
during branch opening. Its not required that these be instances, they
818
can be classes themselves with class methods - it simply depends on
819
whether state is needed for a given format or not.
821
Once a format is deprecated, just deprecate the initialize and open
822
methods on the format class. Do not deprecate the object, as the
823
object will be created every time regardless.
826
_default_format = None
827
"""The default format used for new branches."""
830
"""The known formats."""
832
def __eq__(self, other):
833
return self.__class__ is other.__class__
835
def __ne__(self, other):
836
return not (self == other)
839
def find_format(klass, a_bzrdir):
840
"""Return the format for the branch object in a_bzrdir."""
842
transport = a_bzrdir.get_branch_transport(None)
843
format_string = transport.get("format").read()
844
return klass._formats[format_string]
846
raise NotBranchError(path=transport.base)
848
raise errors.UnknownFormatError(format=format_string)
851
def get_default_format(klass):
852
"""Return the current default format."""
853
return klass._default_format
855
def get_reference(self, a_bzrdir):
856
"""Get the target reference of the branch in a_bzrdir.
858
format probing must have been completed before calling
859
this method - it is assumed that the format of the branch
860
in a_bzrdir is correct.
862
:param a_bzrdir: The bzrdir to get the branch data from.
863
:return: None if the branch is not a reference branch.
867
def get_format_string(self):
868
"""Return the ASCII format string that identifies this format."""
869
raise NotImplementedError(self.get_format_string)
871
def get_format_description(self):
872
"""Return the short format description for this format."""
873
raise NotImplementedError(self.get_format_description)
875
def _initialize_helper(self, a_bzrdir, utf8_files, lock_type='metadir',
877
"""Initialize a branch in a bzrdir, with specified files
879
:param a_bzrdir: The bzrdir to initialize the branch in
880
:param utf8_files: The files to create as a list of
881
(filename, content) tuples
882
:param set_format: If True, set the format with
883
self.get_format_string. (BzrBranch4 has its format set
885
:return: a branch in this format
887
mutter('creating branch %r in %s', self, a_bzrdir.transport.base)
888
branch_transport = a_bzrdir.get_branch_transport(self)
890
'metadir': ('lock', lockdir.LockDir),
891
'branch4': ('branch-lock', lockable_files.TransportLock),
893
lock_name, lock_class = lock_map[lock_type]
894
control_files = lockable_files.LockableFiles(branch_transport,
895
lock_name, lock_class)
896
control_files.create_lock()
897
control_files.lock_write()
899
control_files.put_utf8('format', self.get_format_string())
901
for file, content in utf8_files:
902
control_files.put_utf8(file, content)
904
control_files.unlock()
905
return self.open(a_bzrdir, _found=True)
907
def initialize(self, a_bzrdir):
908
"""Create a branch of this format in a_bzrdir."""
909
raise NotImplementedError(self.initialize)
911
def is_supported(self):
912
"""Is this format supported?
914
Supported formats can be initialized and opened.
915
Unsupported formats may not support initialization or committing or
916
some other features depending on the reason for not being supported.
920
def open(self, a_bzrdir, _found=False):
921
"""Return the branch object for a_bzrdir
923
_found is a private parameter, do not use it. It is used to indicate
924
if format probing has already be done.
926
raise NotImplementedError(self.open)
929
def register_format(klass, format):
930
klass._formats[format.get_format_string()] = format
933
def set_default_format(klass, format):
934
klass._default_format = format
937
def unregister_format(klass, format):
938
assert klass._formats[format.get_format_string()] is format
939
del klass._formats[format.get_format_string()]
942
return self.get_format_string().rstrip()
944
def supports_tags(self):
945
"""True if this format supports tags stored in the branch"""
946
return False # by default
948
# XXX: Probably doesn't really belong here -- mbp 20070212
949
def _initialize_control_files(self, a_bzrdir, utf8_files, lock_filename,
951
branch_transport = a_bzrdir.get_branch_transport(self)
952
control_files = lockable_files.LockableFiles(branch_transport,
953
lock_filename, lock_class)
954
control_files.create_lock()
955
control_files.lock_write()
957
for filename, content in utf8_files:
958
control_files.put_utf8(filename, content)
960
control_files.unlock()
963
class BranchHooks(Hooks):
964
"""A dictionary mapping hook name to a list of callables for branch hooks.
966
e.g. ['set_rh'] Is the list of items to be called when the
967
set_revision_history function is invoked.
971
"""Create the default hooks.
973
These are all empty initially, because by default nothing should get
977
# Introduced in 0.15:
978
# invoked whenever the revision history has been set
979
# with set_revision_history. The api signature is
980
# (branch, revision_history), and the branch will
983
# invoked after a push operation completes.
984
# the api signature is
986
# containing the members
987
# (source, local, master, old_revno, old_revid, new_revno, new_revid)
988
# where local is the local target branch or None, master is the target
989
# master branch, and the rest should be self explanatory. The source
990
# is read locked and the target branches write locked. Source will
991
# be the local low-latency branch.
992
self['post_push'] = []
993
# invoked after a pull operation completes.
994
# the api signature is
996
# containing the members
997
# (source, local, master, old_revno, old_revid, new_revno, new_revid)
998
# where local is the local branch or None, master is the target
999
# master branch, and the rest should be self explanatory. The source
1000
# is read locked and the target branches write locked. The local
1001
# branch is the low-latency branch.
1002
self['post_pull'] = []
1003
# invoked before a commit operation takes place.
1004
# the api signature is
1005
# (local, master, old_revno, old_revid, future_revno, future_revid,
1006
# tree_delta, future_tree).
1007
# old_revid is NULL_REVISION for the first commit to a branch
1008
# tree_delta is a TreeDelta object describing changes from the basis
1009
# revision, hooks MUST NOT modify this delta
1010
# future_tree is an in-memory tree obtained from
1011
# CommitBuilder.revision_tree() and hooks MUST NOT modify this tree
1012
self['pre_commit'] = []
1013
# invoked after a commit operation completes.
1014
# the api signature is
1015
# (local, master, old_revno, old_revid, new_revno, new_revid)
1016
# old_revid is NULL_REVISION for the first commit to a branch.
1017
self['post_commit'] = []
1018
# invoked after a uncommit operation completes.
1019
# the api signature is
1020
# (local, master, old_revno, old_revid, new_revno, new_revid) where
1021
# local is the local branch or None, master is the target branch,
1022
# and an empty branch recieves new_revno of 0, new_revid of None.
1023
self['post_uncommit'] = []
1026
# install the default hooks into the Branch class.
1027
Branch.hooks = BranchHooks()
1030
class BzrBranchFormat4(BranchFormat):
1031
"""Bzr branch format 4.
1034
- a revision-history file.
1035
- a branch-lock lock file [ to be shared with the bzrdir ]
1038
def get_format_description(self):
1039
"""See BranchFormat.get_format_description()."""
1040
return "Branch format 4"
1042
def initialize(self, a_bzrdir):
1043
"""Create a branch of this format in a_bzrdir."""
1044
utf8_files = [('revision-history', ''),
1045
('branch-name', ''),
1047
return self._initialize_helper(a_bzrdir, utf8_files,
1048
lock_type='branch4', set_format=False)
1051
super(BzrBranchFormat4, self).__init__()
1052
self._matchingbzrdir = bzrdir.BzrDirFormat6()
1054
def open(self, a_bzrdir, _found=False):
1055
"""Return the branch object for a_bzrdir
1057
_found is a private parameter, do not use it. It is used to indicate
1058
if format probing has already be done.
1061
# we are being called directly and must probe.
1062
raise NotImplementedError
1063
return BzrBranch(_format=self,
1064
_control_files=a_bzrdir._control_files,
1066
_repository=a_bzrdir.open_repository())
1069
return "Bazaar-NG branch format 4"
1072
class BzrBranchFormat5(BranchFormat):
1073
"""Bzr branch format 5.
1076
- a revision-history file.
1078
- a lock dir guarding the branch itself
1079
- all of this stored in a branch/ subdirectory
1080
- works with shared repositories.
1082
This format is new in bzr 0.8.
1085
def get_format_string(self):
1086
"""See BranchFormat.get_format_string()."""
1087
return "Bazaar-NG branch format 5\n"
1089
def get_format_description(self):
1090
"""See BranchFormat.get_format_description()."""
1091
return "Branch format 5"
1093
def initialize(self, a_bzrdir):
1094
"""Create a branch of this format in a_bzrdir."""
1095
utf8_files = [('revision-history', ''),
1096
('branch-name', ''),
1098
return self._initialize_helper(a_bzrdir, utf8_files)
1101
super(BzrBranchFormat5, self).__init__()
1102
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
1104
def open(self, a_bzrdir, _found=False):
1105
"""Return the branch object for a_bzrdir
1107
_found is a private parameter, do not use it. It is used to indicate
1108
if format probing has already be done.
1111
format = BranchFormat.find_format(a_bzrdir)
1112
assert format.__class__ == self.__class__
1114
transport = a_bzrdir.get_branch_transport(None)
1115
control_files = lockable_files.LockableFiles(transport, 'lock',
1117
return BzrBranch5(_format=self,
1118
_control_files=control_files,
1120
_repository=a_bzrdir.find_repository())
1122
raise NotBranchError(path=transport.base)
1125
class BzrBranchFormat6(BzrBranchFormat5):
1126
"""Branch format with last-revision and tags.
1128
Unlike previous formats, this has no explicit revision history. Instead,
1129
this just stores the last-revision, and the left-hand history leading
1130
up to there is the history.
1132
This format was introduced in bzr 0.15
1133
and became the default in 0.91.
1136
def get_format_string(self):
1137
"""See BranchFormat.get_format_string()."""
1138
return "Bazaar Branch Format 6 (bzr 0.15)\n"
1140
def get_format_description(self):
1141
"""See BranchFormat.get_format_description()."""
1142
return "Branch format 6"
1144
def initialize(self, a_bzrdir):
1145
"""Create a branch of this format in a_bzrdir."""
1146
utf8_files = [('last-revision', '0 null:\n'),
1147
('branch-name', ''),
1148
('branch.conf', ''),
1151
return self._initialize_helper(a_bzrdir, utf8_files)
1153
def open(self, a_bzrdir, _found=False):
1154
"""Return the branch object for a_bzrdir
1156
_found is a private parameter, do not use it. It is used to indicate
1157
if format probing has already be done.
1160
format = BranchFormat.find_format(a_bzrdir)
1161
assert format.__class__ == self.__class__
1162
transport = a_bzrdir.get_branch_transport(None)
1163
control_files = lockable_files.LockableFiles(transport, 'lock',
1165
return BzrBranch6(_format=self,
1166
_control_files=control_files,
1168
_repository=a_bzrdir.find_repository())
1170
def supports_tags(self):
1174
class BranchReferenceFormat(BranchFormat):
1175
"""Bzr branch reference format.
1177
Branch references are used in implementing checkouts, they
1178
act as an alias to the real branch which is at some other url.
1185
def get_format_string(self):
1186
"""See BranchFormat.get_format_string()."""
1187
return "Bazaar-NG Branch Reference Format 1\n"
1189
def get_format_description(self):
1190
"""See BranchFormat.get_format_description()."""
1191
return "Checkout reference format 1"
1193
def get_reference(self, a_bzrdir):
1194
"""See BranchFormat.get_reference()."""
1195
transport = a_bzrdir.get_branch_transport(None)
1196
return transport.get('location').read()
1198
def initialize(self, a_bzrdir, target_branch=None):
1199
"""Create a branch of this format in a_bzrdir."""
1200
if target_branch is None:
1201
# this format does not implement branch itself, thus the implicit
1202
# creation contract must see it as uninitializable
1203
raise errors.UninitializableFormat(self)
1204
mutter('creating branch reference in %s', a_bzrdir.transport.base)
1205
branch_transport = a_bzrdir.get_branch_transport(self)
1206
branch_transport.put_bytes('location',
1207
target_branch.bzrdir.root_transport.base)
1208
branch_transport.put_bytes('format', self.get_format_string())
1209
return self.open(a_bzrdir, _found=True)
1212
super(BranchReferenceFormat, self).__init__()
1213
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
1215
def _make_reference_clone_function(format, a_branch):
1216
"""Create a clone() routine for a branch dynamically."""
1217
def clone(to_bzrdir, revision_id=None):
1218
"""See Branch.clone()."""
1219
return format.initialize(to_bzrdir, a_branch)
1220
# cannot obey revision_id limits when cloning a reference ...
1221
# FIXME RBC 20060210 either nuke revision_id for clone, or
1222
# emit some sort of warning/error to the caller ?!
1225
def open(self, a_bzrdir, _found=False, location=None):
1226
"""Return the branch that the branch reference in a_bzrdir points at.
1228
_found is a private parameter, do not use it. It is used to indicate
1229
if format probing has already be done.
1232
format = BranchFormat.find_format(a_bzrdir)
1233
assert format.__class__ == self.__class__
1234
if location is None:
1235
location = self.get_reference(a_bzrdir)
1236
real_bzrdir = bzrdir.BzrDir.open(location)
1237
result = real_bzrdir.open_branch()
1238
# this changes the behaviour of result.clone to create a new reference
1239
# rather than a copy of the content of the branch.
1240
# I did not use a proxy object because that needs much more extensive
1241
# testing, and we are only changing one behaviour at the moment.
1242
# If we decide to alter more behaviours - i.e. the implicit nickname
1243
# then this should be refactored to introduce a tested proxy branch
1244
# and a subclass of that for use in overriding clone() and ....
1246
result.clone = self._make_reference_clone_function(result)
1250
# formats which have no format string are not discoverable
1251
# and not independently creatable, so are not registered.
1252
__format5 = BzrBranchFormat5()
1253
__format6 = BzrBranchFormat6()
1254
BranchFormat.register_format(__format5)
1255
BranchFormat.register_format(BranchReferenceFormat())
1256
BranchFormat.register_format(__format6)
1257
BranchFormat.set_default_format(__format6)
1258
_legacy_formats = [BzrBranchFormat4(),
1261
class BzrBranch(Branch):
1262
"""A branch stored in the actual filesystem.
1264
Note that it's "local" in the context of the filesystem; it doesn't
1265
really matter if it's on an nfs/smb/afs/coda/... share, as long as
1266
it's writable, and can be accessed via the normal filesystem API.
1269
def __init__(self, _format=None,
1270
_control_files=None, a_bzrdir=None, _repository=None):
1271
"""Create new branch object at a particular location."""
1272
Branch.__init__(self)
1273
if a_bzrdir is None:
1274
raise ValueError('a_bzrdir must be supplied')
1276
self.bzrdir = a_bzrdir
1277
# self._transport used to point to the directory containing the
1278
# control directory, but was not used - now it's just the transport
1279
# for the branch control files. mbp 20070212
1280
self._base = self.bzrdir.transport.clone('..').base
1281
self._format = _format
1282
if _control_files is None:
1283
raise ValueError('BzrBranch _control_files is None')
1284
self.control_files = _control_files
1285
self._transport = _control_files._transport
1286
self.repository = _repository
1289
return '%s(%r)' % (self.__class__.__name__, self.base)
1293
def _get_base(self):
1294
"""Returns the directory containing the control directory."""
1297
base = property(_get_base, doc="The URL for the root of this branch.")
1299
def abspath(self, name):
1300
"""See Branch.abspath."""
1301
return self.control_files._transport.abspath(name)
1304
@deprecated_method(zero_sixteen)
1306
def get_root_id(self):
1307
"""See Branch.get_root_id."""
1308
tree = self.repository.revision_tree(self.last_revision())
1309
return tree.inventory.root.file_id
1311
def is_locked(self):
1312
return self.control_files.is_locked()
1314
def lock_write(self, token=None):
1315
repo_token = self.repository.lock_write()
1317
token = self.control_files.lock_write(token=token)
1319
self.repository.unlock()
1323
def lock_read(self):
1324
self.repository.lock_read()
1326
self.control_files.lock_read()
1328
self.repository.unlock()
1332
# TODO: test for failed two phase locks. This is known broken.
1334
self.control_files.unlock()
1336
self.repository.unlock()
1337
if not self.control_files.is_locked():
1338
# we just released the lock
1339
self._clear_cached_state()
1341
def peek_lock_mode(self):
1342
if self.control_files._lock_count == 0:
1345
return self.control_files._lock_mode
1347
def get_physical_lock_status(self):
1348
return self.control_files.get_physical_lock_status()
1351
def print_file(self, file, revision_id):
1352
"""See Branch.print_file."""
1353
return self.repository.print_file(file, revision_id)
1355
def _write_revision_history(self, history):
1356
"""Factored out of set_revision_history.
1358
This performs the actual writing to disk.
1359
It is intended to be called by BzrBranch5.set_revision_history."""
1360
self.control_files.put_bytes(
1361
'revision-history', '\n'.join(history))
1364
def set_revision_history(self, rev_history):
1365
"""See Branch.set_revision_history."""
1366
rev_history = [osutils.safe_revision_id(r) for r in rev_history]
1367
self._clear_cached_state()
1368
self._write_revision_history(rev_history)
1369
self._cache_revision_history(rev_history)
1370
for hook in Branch.hooks['set_rh']:
1371
hook(self, rev_history)
1374
def set_last_revision_info(self, revno, revision_id):
1375
"""Set the last revision of this branch.
1377
The caller is responsible for checking that the revno is correct
1378
for this revision id.
1380
It may be possible to set the branch last revision to an id not
1381
present in the repository. However, branches can also be
1382
configured to check constraints on history, in which case this may not
1385
revision_id = osutils.safe_revision_id(revision_id)
1386
history = self._lefthand_history(revision_id)
1387
assert len(history) == revno, '%d != %d' % (len(history), revno)
1388
self.set_revision_history(history)
1390
def _gen_revision_history(self):
1391
history = self.control_files.get('revision-history').read().split('\n')
1392
if history[-1:] == ['']:
1393
# There shouldn't be a trailing newline, but just in case.
1397
def _lefthand_history(self, revision_id, last_rev=None,
1399
# stop_revision must be a descendant of last_revision
1400
stop_graph = self.repository.get_revision_graph(revision_id)
1401
if (last_rev is not None and last_rev != _mod_revision.NULL_REVISION
1402
and last_rev not in stop_graph):
1403
# our previous tip is not merged into stop_revision
1404
raise errors.DivergedBranches(self, other_branch)
1405
# make a new revision history from the graph
1406
current_rev_id = revision_id
1408
while current_rev_id not in (None, _mod_revision.NULL_REVISION):
1409
new_history.append(current_rev_id)
1410
current_rev_id_parents = stop_graph[current_rev_id]
1412
current_rev_id = current_rev_id_parents[0]
1414
current_rev_id = None
1415
new_history.reverse()
1419
def generate_revision_history(self, revision_id, last_rev=None,
1421
"""Create a new revision history that will finish with revision_id.
1423
:param revision_id: the new tip to use.
1424
:param last_rev: The previous last_revision. If not None, then this
1425
must be a ancestory of revision_id, or DivergedBranches is raised.
1426
:param other_branch: The other branch that DivergedBranches should
1427
raise with respect to.
1429
revision_id = osutils.safe_revision_id(revision_id)
1430
self.set_revision_history(self._lefthand_history(revision_id,
1431
last_rev, other_branch))
1434
def update_revisions(self, other, stop_revision=None):
1435
"""See Branch.update_revisions."""
1438
if stop_revision is None:
1439
stop_revision = other.last_revision()
1440
if stop_revision is None:
1441
# if there are no commits, we're done.
1444
stop_revision = osutils.safe_revision_id(stop_revision)
1445
# whats the current last revision, before we fetch [and change it
1447
last_rev = _mod_revision.ensure_null(self.last_revision())
1448
# we fetch here regardless of whether we need to so that we pickup
1450
self.fetch(other, stop_revision)
1451
if self.repository.get_graph().is_ancestor(stop_revision,
1454
self.generate_revision_history(stop_revision, last_rev=last_rev,
1459
def basis_tree(self):
1460
"""See Branch.basis_tree."""
1461
return self.repository.revision_tree(self.last_revision())
1464
def pull(self, source, overwrite=False, stop_revision=None,
1465
_hook_master=None, run_hooks=True):
1468
:param _hook_master: Private parameter - set the branch to
1469
be supplied as the master to push hooks.
1470
:param run_hooks: Private parameter - if false, this branch
1471
is being called because it's the master of the primary branch,
1472
so it should not run its hooks.
1474
result = PullResult()
1475
result.source_branch = source
1476
result.target_branch = self
1479
result.old_revno, result.old_revid = self.last_revision_info()
1481
self.update_revisions(source, stop_revision)
1482
except DivergedBranches:
1486
if stop_revision is None:
1487
stop_revision = source.last_revision()
1488
self.generate_revision_history(stop_revision)
1489
result.tag_conflicts = source.tags.merge_to(self.tags, overwrite)
1490
result.new_revno, result.new_revid = self.last_revision_info()
1492
result.master_branch = _hook_master
1493
result.local_branch = self
1495
result.master_branch = self
1496
result.local_branch = None
1498
for hook in Branch.hooks['post_pull']:
1504
def _get_parent_location(self):
1505
_locs = ['parent', 'pull', 'x-pull']
1508
return self.control_files.get(l).read().strip('\n')
1514
def push(self, target, overwrite=False, stop_revision=None,
1515
_override_hook_source_branch=None):
1518
This is the basic concrete implementation of push()
1520
:param _override_hook_source_branch: If specified, run
1521
the hooks passing this Branch as the source, rather than self.
1522
This is for use of RemoteBranch, where push is delegated to the
1523
underlying vfs-based Branch.
1525
# TODO: Public option to disable running hooks - should be trivial but
1529
result = self._push_with_bound_branches(target, overwrite,
1531
_override_hook_source_branch=_override_hook_source_branch)
1536
def _push_with_bound_branches(self, target, overwrite,
1538
_override_hook_source_branch=None):
1539
"""Push from self into target, and into target's master if any.
1541
This is on the base BzrBranch class even though it doesn't support
1542
bound branches because the *target* might be bound.
1545
if _override_hook_source_branch:
1546
result.source_branch = _override_hook_source_branch
1547
for hook in Branch.hooks['post_push']:
1550
bound_location = target.get_bound_location()
1551
if bound_location and target.base != bound_location:
1552
# there is a master branch.
1554
# XXX: Why the second check? Is it even supported for a branch to
1555
# be bound to itself? -- mbp 20070507
1556
master_branch = target.get_master_branch()
1557
master_branch.lock_write()
1559
# push into the master from this branch.
1560
self._basic_push(master_branch, overwrite, stop_revision)
1561
# and push into the target branch from this. Note that we push from
1562
# this branch again, because its considered the highest bandwidth
1564
result = self._basic_push(target, overwrite, stop_revision)
1565
result.master_branch = master_branch
1566
result.local_branch = target
1570
master_branch.unlock()
1573
result = self._basic_push(target, overwrite, stop_revision)
1574
# TODO: Why set master_branch and local_branch if there's no
1575
# binding? Maybe cleaner to just leave them unset? -- mbp
1577
result.master_branch = target
1578
result.local_branch = None
1582
def _basic_push(self, target, overwrite, stop_revision):
1583
"""Basic implementation of push without bound branches or hooks.
1585
Must be called with self read locked and target write locked.
1587
result = PushResult()
1588
result.source_branch = self
1589
result.target_branch = target
1590
result.old_revno, result.old_revid = target.last_revision_info()
1592
target.update_revisions(self, stop_revision)
1593
except DivergedBranches:
1597
target.set_revision_history(self.revision_history())
1598
result.tag_conflicts = self.tags.merge_to(target.tags, overwrite)
1599
result.new_revno, result.new_revid = target.last_revision_info()
1602
def get_parent(self):
1603
"""See Branch.get_parent."""
1605
assert self.base[-1] == '/'
1606
parent = self._get_parent_location()
1609
# This is an old-format absolute path to a local branch
1610
# turn it into a url
1611
if parent.startswith('/'):
1612
parent = urlutils.local_path_to_url(parent.decode('utf8'))
1614
return urlutils.join(self.base[:-1], parent)
1615
except errors.InvalidURLJoin, e:
1616
raise errors.InaccessibleParent(parent, self.base)
1618
def set_push_location(self, location):
1619
"""See Branch.set_push_location."""
1620
self.get_config().set_user_option(
1621
'push_location', location,
1622
store=_mod_config.STORE_LOCATION_NORECURSE)
1625
def set_parent(self, url):
1626
"""See Branch.set_parent."""
1627
# TODO: Maybe delete old location files?
1628
# URLs should never be unicode, even on the local fs,
1629
# FIXUP this and get_parent in a future branch format bump:
1630
# read and rewrite the file, and have the new format code read
1631
# using .get not .get_utf8. RBC 20060125
1633
if isinstance(url, unicode):
1635
url = url.encode('ascii')
1636
except UnicodeEncodeError:
1637
raise errors.InvalidURL(url,
1638
"Urls must be 7-bit ascii, "
1639
"use bzrlib.urlutils.escape")
1640
url = urlutils.relative_url(self.base, url)
1641
self._set_parent_location(url)
1643
def _set_parent_location(self, url):
1645
self.control_files._transport.delete('parent')
1647
assert isinstance(url, str)
1648
self.control_files.put_bytes('parent', url + '\n')
1651
class BzrBranch5(BzrBranch):
1652
"""A format 5 branch. This supports new features over plain branches.
1654
It has support for a master_branch which is the data for bound branches.
1662
super(BzrBranch5, self).__init__(_format=_format,
1663
_control_files=_control_files,
1665
_repository=_repository)
1668
def pull(self, source, overwrite=False, stop_revision=None,
1670
"""Pull from source into self, updating my master if any.
1672
:param run_hooks: Private parameter - if false, this branch
1673
is being called because it's the master of the primary branch,
1674
so it should not run its hooks.
1676
bound_location = self.get_bound_location()
1677
master_branch = None
1678
if bound_location and source.base != bound_location:
1679
# not pulling from master, so we need to update master.
1680
master_branch = self.get_master_branch()
1681
master_branch.lock_write()
1684
# pull from source into master.
1685
master_branch.pull(source, overwrite, stop_revision,
1687
return super(BzrBranch5, self).pull(source, overwrite,
1688
stop_revision, _hook_master=master_branch,
1689
run_hooks=run_hooks)
1692
master_branch.unlock()
1694
def get_bound_location(self):
1696
return self.control_files.get_utf8('bound').read()[:-1]
1697
except errors.NoSuchFile:
1701
def get_master_branch(self, possible_transports=None):
1702
"""Return the branch we are bound to.
1704
:return: Either a Branch, or None
1706
This could memoise the branch, but if thats done
1707
it must be revalidated on each new lock.
1708
So for now we just don't memoise it.
1709
# RBC 20060304 review this decision.
1711
bound_loc = self.get_bound_location()
1715
return Branch.open(bound_loc,
1716
possible_transports=possible_transports)
1717
except (errors.NotBranchError, errors.ConnectionError), e:
1718
raise errors.BoundBranchConnectionFailure(
1722
def set_bound_location(self, location):
1723
"""Set the target where this branch is bound to.
1725
:param location: URL to the target branch
1728
self.control_files.put_utf8('bound', location+'\n')
1731
self.control_files._transport.delete('bound')
955
file(os.path.join(self.base, f), 'w').write('content of %s' % f)
959
"""Destroy the test branch, removing the scratch directory."""
961
shutil.rmtree(self.base)
963
# Work around for shutil.rmtree failing on Windows when
964
# readonly files are encountered
965
for root, dirs, files in os.walk(self.base, topdown=False):
967
os.chmod(os.path.join(root, name), 0700)
968
shutil.rmtree(self.base)
972
######################################################################
976
def is_control_file(filename):
977
## FIXME: better check
978
filename = os.path.normpath(filename)
979
while filename != '':
980
head, tail = os.path.split(filename)
981
## mutter('check %r for control file' % ((head, tail), ))
982
if tail == bzrlib.BZRDIR:
1737
def bind(self, other):
1738
"""Bind this branch to the branch other.
1740
This does not push or pull data between the branches, though it does
1741
check for divergence to raise an error when the branches are not
1742
either the same, or one a prefix of the other. That behaviour may not
1743
be useful, so that check may be removed in future.
1745
:param other: The branch to bind to
1748
# TODO: jam 20051230 Consider checking if the target is bound
1749
# It is debatable whether you should be able to bind to
1750
# a branch which is itself bound.
1751
# Committing is obviously forbidden,
1752
# but binding itself may not be.
1753
# Since we *have* to check at commit time, we don't
1754
# *need* to check here
1756
# we want to raise diverged if:
1757
# last_rev is not in the other_last_rev history, AND
1758
# other_last_rev is not in our history, and do it without pulling
1760
last_rev = _mod_revision.ensure_null(self.last_revision())
1761
if last_rev != _mod_revision.NULL_REVISION:
1764
other_last_rev = other.last_revision()
1765
if not _mod_revision.is_null(other_last_rev):
1766
# neither branch is new, we have to do some work to
1767
# ascertain diversion.
1768
remote_graph = other.repository.get_revision_graph(
1770
local_graph = self.repository.get_revision_graph(last_rev)
1771
if (last_rev not in remote_graph and
1772
other_last_rev not in local_graph):
1773
raise errors.DivergedBranches(self, other)
1776
self.set_bound_location(other.base)
1780
"""If bound, unbind"""
1781
return self.set_bound_location(None)
1784
def update(self, possible_transports=None):
1785
"""Synchronise this branch with the master branch if any.
1787
:return: None or the last_revision that was pivoted out during the
1790
master = self.get_master_branch(possible_transports)
1791
if master is not None:
1792
old_tip = _mod_revision.ensure_null(self.last_revision())
1793
self.pull(master, overwrite=True)
1794
if self.repository.get_graph().is_ancestor(old_tip,
1795
_mod_revision.ensure_null(self.last_revision())):
1801
class BzrBranchExperimental(BzrBranch5):
1802
"""Bzr experimental branch format
1805
- a revision-history file.
1807
- a lock dir guarding the branch itself
1808
- all of this stored in a branch/ subdirectory
1809
- works with shared repositories.
1810
- a tag dictionary in the branch
1812
This format is new in bzr 0.15, but shouldn't be used for real data,
1815
This class acts as it's own BranchFormat.
1818
_matchingbzrdir = bzrdir.BzrDirMetaFormat1()
1821
def get_format_string(cls):
1822
"""See BranchFormat.get_format_string()."""
1823
return "Bazaar-NG branch format experimental\n"
1826
def get_format_description(cls):
1827
"""See BranchFormat.get_format_description()."""
1828
return "Experimental branch format"
1831
def get_reference(cls, a_bzrdir):
1832
"""Get the target reference of the branch in a_bzrdir.
1834
format probing must have been completed before calling
1835
this method - it is assumed that the format of the branch
1836
in a_bzrdir is correct.
1838
:param a_bzrdir: The bzrdir to get the branch data from.
1839
:return: None if the branch is not a reference branch.
1844
def _initialize_control_files(cls, a_bzrdir, utf8_files, lock_filename,
1846
branch_transport = a_bzrdir.get_branch_transport(cls)
1847
control_files = lockable_files.LockableFiles(branch_transport,
1848
lock_filename, lock_class)
1849
control_files.create_lock()
1850
control_files.lock_write()
1852
for filename, content in utf8_files:
1853
control_files.put_utf8(filename, content)
1855
control_files.unlock()
1858
def initialize(cls, a_bzrdir):
1859
"""Create a branch of this format in a_bzrdir."""
1860
utf8_files = [('format', cls.get_format_string()),
1861
('revision-history', ''),
1862
('branch-name', ''),
1865
cls._initialize_control_files(a_bzrdir, utf8_files,
1866
'lock', lockdir.LockDir)
1867
return cls.open(a_bzrdir, _found=True)
1870
def open(cls, a_bzrdir, _found=False):
1871
"""Return the branch object for a_bzrdir
1873
_found is a private parameter, do not use it. It is used to indicate
1874
if format probing has already be done.
1877
format = BranchFormat.find_format(a_bzrdir)
1878
assert format.__class__ == cls
1879
transport = a_bzrdir.get_branch_transport(None)
1880
control_files = lockable_files.LockableFiles(transport, 'lock',
1882
return cls(_format=cls,
1883
_control_files=control_files,
1885
_repository=a_bzrdir.find_repository())
1888
def is_supported(cls):
1891
def _make_tags(self):
1892
return BasicTags(self)
1895
def supports_tags(cls):
1899
BranchFormat.register_format(BzrBranchExperimental)
1902
class BzrBranch6(BzrBranch5):
1905
def last_revision_info(self):
1906
revision_string = self.control_files.get('last-revision').read()
1907
revno, revision_id = revision_string.rstrip('\n').split(' ', 1)
1908
revision_id = cache_utf8.get_cached_utf8(revision_id)
1910
return revno, revision_id
1912
def last_revision(self):
1913
"""Return last revision id, or None"""
1914
revision_id = self.last_revision_info()[1]
1917
def _write_last_revision_info(self, revno, revision_id):
1918
"""Simply write out the revision id, with no checks.
1920
Use set_last_revision_info to perform this safely.
1922
Does not update the revision_history cache.
1923
Intended to be called by set_last_revision_info and
1924
_write_revision_history.
1926
if revision_id is None:
1927
revision_id = 'null:'
1928
out_string = '%d %s\n' % (revno, revision_id)
1929
self.control_files.put_bytes('last-revision', out_string)
1932
def set_last_revision_info(self, revno, revision_id):
1933
revision_id = osutils.safe_revision_id(revision_id)
1934
if self._get_append_revisions_only():
1935
self._check_history_violation(revision_id)
1936
self._write_last_revision_info(revno, revision_id)
1937
self._clear_cached_state()
1939
def _check_history_violation(self, revision_id):
1940
last_revision = _mod_revision.ensure_null(self.last_revision())
1941
if _mod_revision.is_null(last_revision):
1943
if last_revision not in self._lefthand_history(revision_id):
1944
raise errors.AppendRevisionsOnlyViolation(self.base)
1946
def _gen_revision_history(self):
1947
"""Generate the revision history from last revision
1949
history = list(self.repository.iter_reverse_revision_history(
1950
self.last_revision()))
1954
def _write_revision_history(self, history):
1955
"""Factored out of set_revision_history.
1957
This performs the actual writing to disk, with format-specific checks.
1958
It is intended to be called by BzrBranch5.set_revision_history.
1960
if len(history) == 0:
1961
last_revision = 'null:'
1963
if history != self._lefthand_history(history[-1]):
1964
raise errors.NotLefthandHistory(history)
1965
last_revision = history[-1]
1966
if self._get_append_revisions_only():
1967
self._check_history_violation(last_revision)
1968
self._write_last_revision_info(len(history), last_revision)
1971
def _set_parent_location(self, url):
1972
"""Set the parent branch"""
1973
self._set_config_location('parent_location', url, make_relative=True)
1976
def _get_parent_location(self):
1977
"""Set the parent branch"""
1978
return self._get_config_location('parent_location')
1980
def set_push_location(self, location):
1981
"""See Branch.set_push_location."""
1982
self._set_config_location('push_location', location)
1984
def set_bound_location(self, location):
1985
"""See Branch.set_push_location."""
1987
config = self.get_config()
1988
if location is None:
1989
if config.get_user_option('bound') != 'True':
1992
config.set_user_option('bound', 'False', warn_masked=True)
1995
self._set_config_location('bound_location', location,
1997
config.set_user_option('bound', 'True', warn_masked=True)
2000
def _get_bound_location(self, bound):
2001
"""Return the bound location in the config file.
2003
Return None if the bound parameter does not match"""
2004
config = self.get_config()
2005
config_bound = (config.get_user_option('bound') == 'True')
2006
if config_bound != bound:
2008
return self._get_config_location('bound_location', config=config)
2010
def get_bound_location(self):
2011
"""See Branch.set_push_location."""
2012
return self._get_bound_location(True)
2014
def get_old_bound_location(self):
2015
"""See Branch.get_old_bound_location"""
2016
return self._get_bound_location(False)
2018
def set_append_revisions_only(self, enabled):
2023
self.get_config().set_user_option('append_revisions_only', value,
2026
def _get_append_revisions_only(self):
2027
value = self.get_config().get_user_option('append_revisions_only')
2028
return value == 'True'
2030
def _synchronize_history(self, destination, revision_id):
2031
"""Synchronize last revision and revision history between branches.
2033
This version is most efficient when the destination is also a
2034
BzrBranch6, but works for BzrBranch5, as long as the destination's
2035
repository contains all the lefthand ancestors of the intended
2036
last_revision. If not, set_last_revision_info will fail.
2038
:param destination: The branch to copy the history into
2039
:param revision_id: The revision-id to truncate history at. May
2040
be None to copy complete history.
2042
source_revno, source_revision_id = self.last_revision_info()
2043
if revision_id is None:
2044
revno, revision_id = source_revno, source_revision_id
2045
elif source_revision_id == revision_id:
2046
# we know the revno without needing to walk all of history
2047
revno = source_revno
2049
# To figure out the revno for a random revision, we need to build
2050
# the revision history, and count its length.
2051
# We don't care about the order, just how long it is.
2052
# Alternatively, we could start at the current location, and count
2053
# backwards. But there is no guarantee that we will find it since
2054
# it may be a merged revision.
2055
revno = len(list(self.repository.iter_reverse_revision_history(
2057
destination.set_last_revision_info(revno, revision_id)
2059
def _make_tags(self):
2060
return BasicTags(self)
2063
######################################################################
2064
# results of operations
2067
class _Result(object):
2069
def _show_tag_conficts(self, to_file):
2070
if not getattr(self, 'tag_conflicts', None):
2072
to_file.write('Conflicting tags:\n')
2073
for name, value1, value2 in self.tag_conflicts:
2074
to_file.write(' %s\n' % (name, ))
2077
class PullResult(_Result):
2078
"""Result of a Branch.pull operation.
2080
:ivar old_revno: Revision number before pull.
2081
:ivar new_revno: Revision number after pull.
2082
:ivar old_revid: Tip revision id before pull.
2083
:ivar new_revid: Tip revision id after pull.
2084
:ivar source_branch: Source (local) branch object.
2085
:ivar master_branch: Master branch of the target, or None.
2086
:ivar target_branch: Target/destination branch object.
2090
# DEPRECATED: pull used to return the change in revno
2091
return self.new_revno - self.old_revno
2093
def report(self, to_file):
2094
if self.old_revid == self.new_revid:
2095
to_file.write('No revisions to pull.\n')
2097
to_file.write('Now on revision %d.\n' % self.new_revno)
2098
self._show_tag_conficts(to_file)
2101
class PushResult(_Result):
2102
"""Result of a Branch.push operation.
2104
:ivar old_revno: Revision number before push.
2105
:ivar new_revno: Revision number after push.
2106
:ivar old_revid: Tip revision id before push.
2107
:ivar new_revid: Tip revision id after push.
2108
:ivar source_branch: Source branch object.
2109
:ivar master_branch: Master branch of the target, or None.
2110
:ivar target_branch: Target/destination branch object.
2114
# DEPRECATED: push used to return the change in revno
2115
return self.new_revno - self.old_revno
2117
def report(self, to_file):
2118
"""Write a human-readable description of the result."""
2119
if self.old_revid == self.new_revid:
2120
to_file.write('No new revisions to push.\n')
2122
to_file.write('Pushed up to revision %d.\n' % self.new_revno)
2123
self._show_tag_conficts(to_file)
2126
class BranchCheckResult(object):
2127
"""Results of checking branch consistency.
2132
def __init__(self, branch):
2133
self.branch = branch
2135
def report_results(self, verbose):
2136
"""Report the check results via trace.note.
2138
:param verbose: Requests more detailed display of what was checked,
2141
note('checked branch %s format %s',
2143
self.branch._format)
2146
class Converter5to6(object):
2147
"""Perform an in-place upgrade of format 5 to format 6"""
2149
def convert(self, branch):
2150
# Data for 5 and 6 can peacefully coexist.
2151
format = BzrBranchFormat6()
2152
new_branch = format.open(branch.bzrdir, _found=True)
2154
# Copy source data into target
2155
new_branch.set_last_revision_info(*branch.last_revision_info())
2156
new_branch.set_parent(branch.get_parent())
2157
new_branch.set_bound_location(branch.get_bound_location())
2158
new_branch.set_push_location(branch.get_push_location())
2160
# New branch has no tags by default
2161
new_branch.tags._set_tag_dict({})
2163
# Copying done; now update target format
2164
new_branch.control_files.put_utf8('format',
2165
format.get_format_string())
2167
# Clean up old files
2168
new_branch.control_files._transport.delete('revision-history')
2170
branch.set_parent(None)
2173
branch.set_bound_location(None)
991
def _gen_revision_id(when):
992
"""Return new revision-id."""
993
s = '%s-%s-' % (user_email(), compact_date(when))
994
s += hexlify(rand_bytes(8))
998
def gen_file_id(name):
999
"""Return new file id.
1001
This should probably generate proper UUIDs, but for the moment we
1002
cope with just randomness because running uuidgen every time is
1004
idx = name.rfind('/')
1006
name = name[idx+1 : ]
1007
idx = name.rfind('\\')
1009
name = name[idx+1 : ]
1011
name = name.lstrip('.')
1013
s = hexlify(rand_bytes(8))
1014
return '-'.join((name, compact_date(time.time()), s))
added
removed
bzrlib/branch.py
