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# Copyright (C) 2005 Canonical Ltd
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# Copyright (C) 2005, 2006 Canonical Ltd
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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from cStringIO import StringIO
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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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from bzrlib.lazy_import import lazy_import
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lazy_import(globals(), """
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from copy import deepcopy
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from unittest import TestSuite
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from warnings import warn
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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, \
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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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revision as _mod_revision,
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from bzrlib.config import BranchConfig, TreeConfig
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from bzrlib.lockable_files import LockableFiles, TransportLock
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from bzrlib.decorators import needs_read_lock, needs_write_lock
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from bzrlib.errors import (BzrError, BzrCheckError, DivergedBranches,
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HistoryMissing, InvalidRevisionId,
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InvalidRevisionNumber, LockError, NoSuchFile,
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NoSuchRevision, NoWorkingTree, NotVersionedError,
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NotBranchError, UninitializableFormat,
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UnlistableStore, UnlistableBranch,
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from bzrlib.symbol_versioning import (deprecated_function,
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zero_eight, zero_nine,
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from bzrlib.trace import mutter, note
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BZR_BRANCH_FORMAT_4 = "Bazaar-NG branch, format 0.0.4\n"
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BZR_BRANCH_FORMAT_5 = "Bazaar-NG branch, format 5\n"
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BZR_BRANCH_FORMAT_6 = "Bazaar-NG branch, format 6\n"
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# TODO: Maybe include checks for common corruption of newlines, etc?
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# TODO: Some operations like log might retrieve the same revisions
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# repeatedly to calculate deltas. We could perhaps have a weakref
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# cache in memory to make this faster. In general anything can be
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# cached in memory between lock and unlock operations. .. nb thats
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# what the transaction identity map provides
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######################################################################
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"""Branch holding a history of revisions.
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Base directory of the branch.
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Base directory/url of the branch.
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def __init__(self, base, init=False, find_root=True, lock_mode='w'):
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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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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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# this is really an instance variable - FIXME move it there
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def __init__(self, *ignored, **ignored_too):
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raise NotImplementedError('The Branch class is abstract')
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"""Break a lock if one is present from another instance.
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Uses the ui factory to ask for confirmation if the lock may be from
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This will probe the repository for its lock as well.
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self.control_files.break_lock()
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self.repository.break_lock()
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master = self.get_master_branch()
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if master is not None:
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@deprecated_method(zero_eight)
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def open_downlevel(base):
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"""Open a branch which may be of an old format."""
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return Branch.open(base, _unsupported=True)
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def open(base, _unsupported=False):
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"""Open the branch rooted at base.
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For instance, if the branch is at URL/.bzr/branch,
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Branch.open(URL) -> a Branch instance.
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control = bzrdir.BzrDir.open(base, _unsupported)
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return control.open_branch(_unsupported)
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def open_containing(url):
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"""Open an existing branch which contains url.
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This probes for a branch at url, and searches upwards from there.
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Basically we keep looking up until we find the control directory or
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run into the root. If there isn't one, raises NotBranchError.
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If there is one and it is either an unrecognised format or an unsupported
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format, UnknownFormatError or UnsupportedFormatError are raised.
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If there is one, it is returned, along with the unused portion of url.
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control, relpath = bzrdir.BzrDir.open_containing(url)
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return control.open_branch(), relpath
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@deprecated_function(zero_eight)
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def initialize(base):
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"""Create a new working tree and branch, rooted at 'base' (url)
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NOTE: This will soon be deprecated in favour of creation
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return bzrdir.BzrDir.create_standalone_workingtree(base).branch
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@deprecated_function(zero_eight)
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def setup_caching(self, cache_root):
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"""Subclasses that care about caching should override this, and set
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up cached stores located under cache_root.
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NOTE: This is unused.
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def get_config(self):
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return BranchConfig(self)
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return self.get_config().get_nickname()
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def _set_nick(self, nick):
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self.get_config().set_user_option('nickname', nick)
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nick = property(_get_nick, _set_nick)
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raise NotImplementedError(self.is_locked)
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def lock_write(self):
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raise NotImplementedError(self.lock_write)
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raise NotImplementedError(self.lock_read)
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raise NotImplementedError(self.unlock)
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def peek_lock_mode(self):
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"""Return lock mode for the Branch: 'r', 'w' or None"""
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raise NotImplementedError(self.peek_lock_mode)
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def get_physical_lock_status(self):
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raise NotImplementedError(self.get_physical_lock_status)
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def abspath(self, name):
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"""Return absolute filename for something in the branch
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XXX: Robert Collins 20051017 what is this used for? why is it a branch
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method and not a tree method.
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raise NotImplementedError(self.abspath)
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def bind(self, other):
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"""Bind the local branch the other branch.
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:param other: The branch to bind to
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raise errors.UpgradeRequired(self.base)
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def fetch(self, from_branch, last_revision=None, pb=None):
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"""Copy revisions from from_branch into this branch.
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:param from_branch: Where to copy from.
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:param last_revision: What revision to stop at (None for at the end
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:param pb: An optional progress bar to use.
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Returns the copied revision count and the failed revisions in a tuple:
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if self.base == from_branch.base:
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nested_pb = ui.ui_factory.nested_progress_bar()
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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 lock(self, mode='w'):
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"""Lock the on-disk branch, excluding other processes."""
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from_branch.lock_read()
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om = os.O_WRONLY | os.O_CREAT
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raise BzrError("invalid locking mode %r" % mode)
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lockfile = os.open(self.controlfilename('branch-lock'), om)
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if e.errno == errno.ENOENT:
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# might not exist on branches from <0.0.4
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self.controlfile('branch-lock', 'w').close()
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lockfile = os.open(self.controlfilename('branch-lock'), om)
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if last_revision is None:
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pb.update('get source history')
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from_history = from_branch.revision_history()
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last_revision = from_history[-1]
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fcntl.lockf(lockfile, lm)
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fcntl.lockf(lockfile, fcntl.LOCK_UN)
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self._lockmode = None
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self._lockmode = mode
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warning("please write a locking method for platform %r" % sys.platform)
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self._lockmode = None
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self._lockmode = mode
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def _need_readlock(self):
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if self._lockmode not in ['r', 'w']:
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raise BzrError('need read lock on branch, only have %r' % self._lockmode)
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def _need_writelock(self):
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if self._lockmode not in ['w']:
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raise BzrError('need write lock on branch, only have %r' % self._lockmode)
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def abspath(self, name):
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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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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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self._need_readlock()
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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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self._need_writelock()
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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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self._need_writelock()
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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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# no history in the source branch
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last_revision = _mod_revision.NULL_REVISION
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return self.repository.fetch(from_branch.repository,
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revision_id=last_revision,
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if nested_pb is not None:
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def get_bound_location(self):
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"""Return the URL of the branch we are bound to.
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Older format branches cannot bind, please be sure to use a metadir
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def get_commit_builder(self, parents, config=None, timestamp=None,
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timezone=None, committer=None, revprops=None,
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"""Obtain a CommitBuilder for this branch.
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:param parents: Revision ids of the parents of the new revision.
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:param config: Optional configuration to use.
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:param timestamp: Optional timestamp recorded for commit.
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:param timezone: Optional timezone for timestamp.
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:param committer: Optional committer to set for commit.
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:param revprops: Optional dictionary of revision properties.
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:param revision_id: Optional revision id.
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config = self.get_config()
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return self.repository.get_commit_builder(self, parents, config,
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timestamp, timezone, committer, revprops, revision_id)
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def get_master_branch(self):
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"""Return the branch we are bound to.
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:return: Either a Branch, or None
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def get_revision_delta(self, revno):
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"""Return the delta for one revision.
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The delta is relative to its mainline predecessor, or the
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empty tree for revision 1.
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assert isinstance(revno, int)
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rh = self.revision_history()
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if not (1 <= revno <= len(rh)):
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raise InvalidRevisionNumber(revno)
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return self.repository.get_revision_delta(rh[revno-1])
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def get_root_id(self):
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"""Return the id of this branches root"""
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raise NotImplementedError(self.get_root_id)
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def print_file(self, file, revision_id):
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"""Print `file` to stdout."""
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self._need_readlock()
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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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self._need_writelock()
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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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self._need_writelock()
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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
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# actual file versions committed in the revision. (These are
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# not present in the working inventory.) We also need to
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# detect missing/deleted files, and remove them from the
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work_inv = self.read_working_inventory()
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basis = self.basis_tree()
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basis_inv = basis.inventory
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for path, entry in work_inv.iter_entries():
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## TODO: Cope with files that have gone missing.
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## TODO: Check that the file kind has not changed from the previous
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## revision of this file (if any).
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p = self.abspath(path)
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file_id = entry.file_id
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mutter('commit prep file %s, id %r ' % (p, file_id))
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if not os.path.exists(p):
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mutter(" file is missing, removing from inventory")
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show_status('D', entry.kind, quotefn(path))
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missing_ids.append(file_id)
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# TODO: Handle files that have been deleted
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# TODO: Maybe a special case for empty files? Seems a
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# waste to store them many times.
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if basis_inv.has_id(file_id):
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old_kind = basis_inv[file_id].kind
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if old_kind != entry.kind:
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bailout("entry %r changed kind from %r to %r"
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% (file_id, old_kind, entry.kind))
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if entry.kind == 'directory':
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bailout("%s is entered as directory but not a directory" % quotefn(p))
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elif entry.kind == 'file':
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bailout("%s is entered as file but is not a file" % quotefn(p))
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content = file(p, 'rb').read()
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entry.text_sha1 = sha_string(content)
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entry.text_size = len(content)
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old_ie = basis_inv.has_id(file_id) and basis_inv[file_id]
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and (old_ie.text_size == entry.text_size)
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and (old_ie.text_sha1 == entry.text_sha1)):
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## assert content == basis.get_file(file_id).read()
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entry.text_id = basis_inv[file_id].text_id
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mutter(' unchanged from previous text_id {%s}' %
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entry.text_id = gen_file_id(entry.name)
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self.text_store.add(content, entry.text_id)
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mutter(' stored with text_id {%s}' % entry.text_id)
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elif (old_ie.name == entry.name
568
and old_ie.parent_id == entry.parent_id):
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show_status(state, entry.kind, quotefn(path))
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for file_id in missing_ids:
576
# have to do this later so we don't mess up the iterator.
577
# since parents may be removed before their children we
580
# FIXME: There's probably a better way to do this; perhaps
581
# the workingtree should know how to filter itself.
582
if work_inv.has_id(file_id):
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del work_inv[file_id]
586
inv_id = rev_id = _gen_revision_id(time.time())
588
inv_tmp = tempfile.TemporaryFile()
589
inv.write_xml(inv_tmp)
591
self.inventory_store.add(inv_tmp, inv_id)
592
mutter('new inventory_id is {%s}' % inv_id)
594
self._write_inventory(work_inv)
596
if timestamp == None:
597
timestamp = time.time()
599
if committer == None:
600
committer = username()
603
timezone = local_time_offset()
605
mutter("building commit log message")
606
rev = Revision(timestamp=timestamp,
609
precursor = self.last_patch(),
614
rev_tmp = tempfile.TemporaryFile()
615
rev.write_xml(rev_tmp)
617
self.revision_store.add(rev_tmp, rev_id)
618
mutter("new revision_id is {%s}" % rev_id)
620
## XXX: Everything up to here can simply be orphaned if we abort
621
## the commit; it will leave junk files behind but that doesn't
624
## TODO: Read back the just-generated changeset, and make sure it
625
## applies and recreates the right state.
627
## TODO: Also calculate and store the inventory SHA1
628
mutter("committing patch r%d" % (self.revno() + 1))
631
self.append_revision(rev_id)
634
note("commited r%d" % self.revno())
637
def append_revision(self, revision_id):
638
mutter("add {%s} to revision-history" % revision_id)
639
rev_history = self.revision_history()
641
tmprhname = self.controlfilename('revision-history.tmp')
642
rhname = self.controlfilename('revision-history')
644
f = file(tmprhname, 'wt')
645
rev_history.append(revision_id)
646
f.write('\n'.join(rev_history))
650
if sys.platform == 'win32':
652
os.rename(tmprhname, rhname)
656
def get_revision(self, revision_id):
657
"""Return the Revision object for a named revision"""
658
self._need_readlock()
659
r = Revision.read_xml(self.revision_store[revision_id])
660
assert r.revision_id == revision_id
664
def get_inventory(self, inventory_id):
665
"""Get Inventory object by hash.
667
TODO: Perhaps for this and similar methods, take a revision
668
parameter which can be either an integer revno or a
670
self._need_readlock()
671
i = Inventory.read_xml(self.inventory_store[inventory_id])
675
def get_revision_inventory(self, revision_id):
676
"""Return inventory of a past revision."""
677
self._need_readlock()
678
if revision_id == None:
681
return self.get_inventory(self.get_revision(revision_id).inventory_id)
292
raise NotImplementedError(self.print_file)
294
def append_revision(self, *revision_ids):
295
raise NotImplementedError(self.append_revision)
297
def set_revision_history(self, rev_history):
298
raise NotImplementedError(self.set_revision_history)
684
300
def revision_history(self):
685
"""Return sequence of revision hashes on to this branch.
687
>>> ScratchBranch().revision_history()
690
self._need_readlock()
691
return [l.rstrip('\r\n') for l in self.controlfile('revision-history', 'r').readlines()]
694
def enum_history(self, direction):
695
"""Return (revno, revision_id) for history of branch.
698
'forward' is from earliest to latest
699
'reverse' is from latest to earliest
701
rh = self.revision_history()
702
if direction == 'forward':
707
elif direction == 'reverse':
713
raise BzrError('invalid history direction %r' % direction)
301
"""Return sequence of revision hashes on to this branch."""
302
raise NotImplementedError(self.revision_history)
717
305
"""Return current revision number for this branch.
719
307
That is equivalent to the number of revisions committed to
722
>>> b = ScratchBranch()
725
>>> b.commit('no foo')
729
310
return len(self.revision_history())
732
def last_patch(self):
733
"""Return last patch hash, or None if no history.
735
>>> ScratchBranch().last_patch() == None
313
"""Older format branches cannot bind or unbind."""
314
raise errors.UpgradeRequired(self.base)
316
def last_revision(self):
317
"""Return last revision id, or None"""
738
318
ph = self.revision_history()
324
def missing_revisions(self, other, stop_revision=None):
325
"""Return a list of new revisions that would perfectly fit.
745
def lookup_revision(self, revno):
746
"""Return revision hash for revision number."""
327
If self and other have not diverged, return a list of the revisions
328
present in other, but missing from self.
330
self_history = self.revision_history()
331
self_len = len(self_history)
332
other_history = other.revision_history()
333
other_len = len(other_history)
334
common_index = min(self_len, other_len) -1
335
if common_index >= 0 and \
336
self_history[common_index] != other_history[common_index]:
337
raise DivergedBranches(self, other)
339
if stop_revision is None:
340
stop_revision = other_len
342
assert isinstance(stop_revision, int)
343
if stop_revision > other_len:
344
raise errors.NoSuchRevision(self, stop_revision)
345
return other_history[self_len:stop_revision]
347
def update_revisions(self, other, stop_revision=None):
348
"""Pull in new perfect-fit revisions.
350
:param other: Another Branch to pull from
351
:param stop_revision: Updated until the given revision
354
raise NotImplementedError(self.update_revisions)
356
def revision_id_to_revno(self, revision_id):
357
"""Given a revision id, return its revno"""
358
if revision_id is None:
360
history = self.revision_history()
362
return history.index(revision_id) + 1
364
raise bzrlib.errors.NoSuchRevision(self, revision_id)
366
def get_rev_id(self, revno, history=None):
367
"""Find the revision id of the specified revno."""
751
# list is 0-based; revisions are 1-based
752
return self.revision_history()[revno-1]
754
raise BzrError("no such revision %s" % revno)
757
def revision_tree(self, revision_id):
758
"""Return Tree for a revision on this branch.
760
`revision_id` may be None for the null revision, in which case
761
an `EmptyTree` is returned."""
762
self._need_readlock()
763
if revision_id == None:
766
inv = self.get_revision_inventory(revision_id)
767
return RevisionTree(self.text_store, inv)
770
def working_tree(self):
771
"""Return a `Tree` for the working copy."""
772
return WorkingTree(self.base, self.read_working_inventory())
371
history = self.revision_history()
372
if revno <= 0 or revno > len(history):
373
raise bzrlib.errors.NoSuchRevision(self, revno)
374
return history[revno - 1]
376
def pull(self, source, overwrite=False, stop_revision=None):
377
raise NotImplementedError(self.pull)
775
379
def basis_tree(self):
776
"""Return `Tree` object for last revision.
778
If there are no revisions yet, return an `EmptyTree`.
780
>>> b = ScratchBranch(files=['foo'])
781
>>> b.basis_tree().has_filename('foo')
783
>>> b.working_tree().has_filename('foo')
786
>>> b.commit('add foo')
787
>>> b.basis_tree().has_filename('foo')
790
r = self.last_patch()
794
return RevisionTree(self.text_store, self.get_revision_inventory(r))
380
"""Return `Tree` object for last revision."""
381
return self.repository.revision_tree(self.last_revision())
798
383
def rename_one(self, from_rel, to_rel):
799
384
"""Rename one file.
801
386
This can change the directory or the filename or both.
803
self._need_writelock()
804
tree = self.working_tree()
806
if not tree.has_filename(from_rel):
807
bailout("can't rename: old working file %r does not exist" % from_rel)
808
if tree.has_filename(to_rel):
809
bailout("can't rename: new working file %r already exists" % to_rel)
811
file_id = inv.path2id(from_rel)
813
bailout("can't rename: old name %r is not versioned" % from_rel)
815
if inv.path2id(to_rel):
816
bailout("can't rename: new name %r is already versioned" % to_rel)
818
to_dir, to_tail = os.path.split(to_rel)
819
to_dir_id = inv.path2id(to_dir)
820
if to_dir_id == None and to_dir != '':
821
bailout("can't determine destination directory id for %r" % to_dir)
823
mutter("rename_one:")
824
mutter(" file_id {%s}" % file_id)
825
mutter(" from_rel %r" % from_rel)
826
mutter(" to_rel %r" % to_rel)
827
mutter(" to_dir %r" % to_dir)
828
mutter(" to_dir_id {%s}" % to_dir_id)
830
inv.rename(file_id, to_dir_id, to_tail)
832
print "%s => %s" % (from_rel, to_rel)
834
from_abs = self.abspath(from_rel)
835
to_abs = self.abspath(to_rel)
837
os.rename(from_abs, to_abs)
839
bailout("failed to rename %r to %r: %s"
840
% (from_abs, to_abs, e[1]),
841
["rename rolled back"])
843
self._write_inventory(inv)
388
raise NotImplementedError(self.rename_one)
847
390
def move(self, from_paths, to_name):
855
398
Note that to_name is only the last component of the new name;
856
399
this doesn't change the directory.
858
self._need_writelock()
859
## TODO: Option to move IDs only
860
assert not isinstance(from_paths, basestring)
861
tree = self.working_tree()
863
to_abs = self.abspath(to_name)
864
if not isdir(to_abs):
865
bailout("destination %r is not a directory" % to_abs)
866
if not tree.has_filename(to_name):
867
bailout("destination %r not in working directory" % to_abs)
868
to_dir_id = inv.path2id(to_name)
869
if to_dir_id == None and to_name != '':
870
bailout("destination %r is not a versioned directory" % to_name)
871
to_dir_ie = inv[to_dir_id]
872
if to_dir_ie.kind not in ('directory', 'root_directory'):
873
bailout("destination %r is not a directory" % to_abs)
875
to_idpath = Set(inv.get_idpath(to_dir_id))
878
if not tree.has_filename(f):
879
bailout("%r does not exist in working tree" % f)
880
f_id = inv.path2id(f)
882
bailout("%r is not versioned" % f)
883
name_tail = splitpath(f)[-1]
884
dest_path = appendpath(to_name, name_tail)
885
if tree.has_filename(dest_path):
886
bailout("destination %r already exists" % dest_path)
887
if f_id in to_idpath:
888
bailout("can't move %r to a subdirectory of itself" % f)
890
# OK, so there's a race here, it's possible that someone will
891
# create a file in this interval and then the rename might be
892
# left half-done. But we should have caught most problems.
895
name_tail = splitpath(f)[-1]
896
dest_path = appendpath(to_name, name_tail)
897
print "%s => %s" % (f, dest_path)
898
inv.rename(inv.path2id(f), to_dir_id, name_tail)
900
os.rename(self.abspath(f), self.abspath(dest_path))
902
bailout("failed to rename %r to %r: %s" % (f, dest_path, e[1]),
903
["rename rolled back"])
905
self._write_inventory(inv)
909
def show_status(self, show_all=False):
910
"""Display single-line status for non-ignored working files.
912
The list is show sorted in order by file name.
914
>>> b = ScratchBranch(files=['foo', 'foo~'])
920
>>> b.commit("add foo")
922
>>> os.unlink(b.abspath('foo'))
926
TODO: Get state for single files.
928
self._need_readlock()
930
# We have to build everything into a list first so that it can
931
# sorted by name, incorporating all the different sources.
933
# FIXME: Rather than getting things in random order and then sorting,
934
# just step through in order.
936
# Interesting case: the old ID for a file has been removed,
937
# but a new file has been created under that name.
939
old = self.basis_tree()
940
new = self.working_tree()
942
for fs, fid, oldname, newname, kind in diff_trees(old, new):
944
show_status(fs, kind,
945
oldname + ' => ' + newname)
946
elif fs == 'A' or fs == 'M':
947
show_status(fs, kind, newname)
949
show_status(fs, kind, oldname)
952
show_status(fs, kind, newname)
955
show_status(fs, kind, newname)
957
show_status(fs, kind, newname)
959
bailout("weird file state %r" % ((fs, fid),))
963
class ScratchBranch(Branch):
964
"""Special test class: a branch that cleans up after itself.
966
>>> b = ScratchBranch()
974
def __init__(self, files=[], dirs=[]):
975
"""Make a test branch.
977
This creates a temporary directory and runs init-tree in it.
979
If any files are listed, they are created in the working copy.
981
Branch.__init__(self, tempfile.mkdtemp(), init=True)
983
os.mkdir(self.abspath(d))
401
This returns a list of (from_path, to_path) pairs for each
404
raise NotImplementedError(self.move)
406
def get_parent(self):
407
"""Return the parent location of the branch.
409
This is the default location for push/pull/missing. The usual
410
pattern is that the user can override it by specifying a
413
raise NotImplementedError(self.get_parent)
415
def get_submit_branch(self):
416
"""Return the submit location of the branch.
418
This is the default location for bundle. The usual
419
pattern is that the user can override it by specifying a
422
return self.get_config().get_user_option('submit_branch')
424
def set_submit_branch(self, location):
425
"""Return the submit location of the branch.
427
This is the default location for bundle. The usual
428
pattern is that the user can override it by specifying a
431
self.get_config().set_user_option('submit_branch', location)
433
def get_push_location(self):
434
"""Return the None or the location to push this branch to."""
435
raise NotImplementedError(self.get_push_location)
437
def set_push_location(self, location):
438
"""Set a new push location for this branch."""
439
raise NotImplementedError(self.set_push_location)
441
def set_parent(self, url):
442
raise NotImplementedError(self.set_parent)
446
"""Synchronise this branch with the master branch if any.
448
:return: None or the last_revision pivoted out during the update.
452
def check_revno(self, revno):
454
Check whether a revno corresponds to any revision.
455
Zero (the NULL revision) is considered valid.
458
self.check_real_revno(revno)
986
file(os.path.join(self.base, f), 'w').write('content of %s' % f)
993
"""Destroy the test branch, removing the scratch directory."""
995
mutter("delete ScratchBranch %s" % self.base)
996
shutil.rmtree(self.base)
998
# Work around for shutil.rmtree failing on Windows when
999
# readonly files are encountered
1000
mutter("hit exception in destroying ScratchBranch: %s" % e)
1001
for root, dirs, files in os.walk(self.base, topdown=False):
1003
os.chmod(os.path.join(root, name), 0700)
1004
shutil.rmtree(self.base)
460
def check_real_revno(self, revno):
462
Check whether a revno corresponds to a real revision.
463
Zero (the NULL revision) is considered invalid
465
if revno < 1 or revno > self.revno():
466
raise InvalidRevisionNumber(revno)
469
def clone(self, *args, **kwargs):
470
"""Clone this branch into to_bzrdir preserving all semantic values.
472
revision_id: if not None, the revision history in the new branch will
473
be truncated to end with revision_id.
475
# for API compatibility, until 0.8 releases we provide the old api:
476
# def clone(self, to_location, revision=None, basis_branch=None, to_branch_format=None):
477
# after 0.8 releases, the *args and **kwargs should be changed:
478
# def clone(self, to_bzrdir, revision_id=None):
479
if (kwargs.get('to_location', None) or
480
kwargs.get('revision', None) or
481
kwargs.get('basis_branch', None) or
482
(len(args) and isinstance(args[0], basestring))):
483
# backwards compatibility api:
484
warn("Branch.clone() has been deprecated for BzrDir.clone() from"
485
" bzrlib 0.8.", DeprecationWarning, stacklevel=3)
488
basis_branch = args[2]
490
basis_branch = kwargs.get('basis_branch', None)
492
basis = basis_branch.bzrdir
497
revision_id = args[1]
499
revision_id = kwargs.get('revision', None)
504
# no default to raise if not provided.
505
url = kwargs.get('to_location')
506
return self.bzrdir.clone(url,
507
revision_id=revision_id,
508
basis=basis).open_branch()
510
# generate args by hand
512
revision_id = args[1]
514
revision_id = kwargs.get('revision_id', None)
518
# no default to raise if not provided.
519
to_bzrdir = kwargs.get('to_bzrdir')
520
result = self._format.initialize(to_bzrdir)
521
self.copy_content_into(result, revision_id=revision_id)
525
def sprout(self, to_bzrdir, revision_id=None):
526
"""Create a new line of development from the branch, into to_bzrdir.
528
revision_id: if not None, the revision history in the new branch will
529
be truncated to end with revision_id.
531
result = self._format.initialize(to_bzrdir)
532
self.copy_content_into(result, revision_id=revision_id)
533
result.set_parent(self.bzrdir.root_transport.base)
537
def copy_content_into(self, destination, revision_id=None):
538
"""Copy the content of self into destination.
540
revision_id: if not None, the revision history in the new branch will
541
be truncated to end with revision_id.
543
new_history = self.revision_history()
544
if revision_id is not None:
546
new_history = new_history[:new_history.index(revision_id) + 1]
548
rev = self.repository.get_revision(revision_id)
549
new_history = rev.get_history(self.repository)[1:]
550
destination.set_revision_history(new_history)
552
parent = self.get_parent()
553
except errors.InaccessibleParent, e:
554
mutter('parent was not accessible to copy: %s', e)
557
destination.set_parent(parent)
561
"""Check consistency of the branch.
563
In particular this checks that revisions given in the revision-history
564
do actually match up in the revision graph, and that they're all
565
present in the repository.
567
Callers will typically also want to check the repository.
569
:return: A BranchCheckResult.
571
mainline_parent_id = None
572
for revision_id in self.revision_history():
574
revision = self.repository.get_revision(revision_id)
575
except errors.NoSuchRevision, e:
576
raise errors.BzrCheckError("mainline revision {%s} not in repository"
578
# In general the first entry on the revision history has no parents.
579
# But it's not illegal for it to have parents listed; this can happen
580
# in imports from Arch when the parents weren't reachable.
581
if mainline_parent_id is not None:
582
if mainline_parent_id not in revision.parent_ids:
583
raise errors.BzrCheckError("previous revision {%s} not listed among "
585
% (mainline_parent_id, revision_id))
586
mainline_parent_id = revision_id
587
return BranchCheckResult(self)
589
def _get_checkout_format(self):
590
"""Return the most suitable metadir for a checkout of this branch.
591
Weaves are used if this branch's repostory uses weaves.
593
if isinstance(self.bzrdir, bzrdir.BzrDirPreSplitOut):
594
from bzrlib import repository
595
format = bzrdir.BzrDirMetaFormat1()
596
format.repository_format = repository.RepositoryFormat7()
598
format = self.repository.bzrdir.cloning_metadir()
601
def create_checkout(self, to_location, revision_id=None,
603
"""Create a checkout of a branch.
605
:param to_location: The url to produce the checkout at
606
:param revision_id: The revision to check out
607
:param lightweight: If True, produce a lightweight checkout, otherwise,
608
produce a bound branch (heavyweight checkout)
609
:return: The tree of the created checkout
611
t = transport.get_transport(to_location)
614
except errors.FileExists:
617
checkout = bzrdir.BzrDirMetaFormat1().initialize_on_transport(t)
618
BranchReferenceFormat().initialize(checkout, self)
620
format = self._get_checkout_format()
621
checkout_branch = bzrdir.BzrDir.create_branch_convenience(
622
to_location, force_new_tree=False, format=format)
623
checkout = checkout_branch.bzrdir
624
checkout_branch.bind(self)
625
# pull up to the specified revision_id to set the initial
626
# branch tip correctly, and seed it with history.
627
checkout_branch.pull(self, stop_revision=revision_id)
628
return checkout.create_workingtree(revision_id)
631
class BranchFormat(object):
632
"""An encapsulation of the initialization and open routines for a format.
634
Formats provide three things:
635
* An initialization routine,
639
Formats are placed in an dict by their format string for reference
640
during branch opening. Its not required that these be instances, they
641
can be classes themselves with class methods - it simply depends on
642
whether state is needed for a given format or not.
644
Once a format is deprecated, just deprecate the initialize and open
645
methods on the format class. Do not deprecate the object, as the
646
object will be created every time regardless.
649
_default_format = None
650
"""The default format used for new branches."""
653
"""The known formats."""
656
def find_format(klass, a_bzrdir):
657
"""Return the format for the branch object in a_bzrdir."""
659
transport = a_bzrdir.get_branch_transport(None)
660
format_string = transport.get("format").read()
661
return klass._formats[format_string]
663
raise NotBranchError(path=transport.base)
665
raise errors.UnknownFormatError(format=format_string)
668
def get_default_format(klass):
669
"""Return the current default format."""
670
return klass._default_format
672
def get_format_string(self):
673
"""Return the ASCII format string that identifies this format."""
674
raise NotImplementedError(self.get_format_string)
676
def get_format_description(self):
677
"""Return the short format description for this format."""
678
raise NotImplementedError(self.get_format_string)
680
def initialize(self, a_bzrdir):
681
"""Create a branch of this format in a_bzrdir."""
682
raise NotImplementedError(self.initialize)
684
def is_supported(self):
685
"""Is this format supported?
687
Supported formats can be initialized and opened.
688
Unsupported formats may not support initialization or committing or
689
some other features depending on the reason for not being supported.
693
def open(self, a_bzrdir, _found=False):
694
"""Return the branch object for a_bzrdir
696
_found is a private parameter, do not use it. It is used to indicate
697
if format probing has already be done.
699
raise NotImplementedError(self.open)
702
def register_format(klass, format):
703
klass._formats[format.get_format_string()] = format
706
def set_default_format(klass, format):
707
klass._default_format = format
710
def unregister_format(klass, format):
711
assert klass._formats[format.get_format_string()] is format
712
del klass._formats[format.get_format_string()]
715
return self.get_format_string().rstrip()
718
class BzrBranchFormat4(BranchFormat):
719
"""Bzr branch format 4.
722
- a revision-history file.
723
- a branch-lock lock file [ to be shared with the bzrdir ]
726
def get_format_description(self):
727
"""See BranchFormat.get_format_description()."""
728
return "Branch format 4"
730
def initialize(self, a_bzrdir):
731
"""Create a branch of this format in a_bzrdir."""
732
mutter('creating branch in %s', a_bzrdir.transport.base)
733
branch_transport = a_bzrdir.get_branch_transport(self)
734
utf8_files = [('revision-history', ''),
737
control_files = lockable_files.LockableFiles(branch_transport,
738
'branch-lock', lockable_files.TransportLock)
739
control_files.create_lock()
740
control_files.lock_write()
742
for file, content in utf8_files:
743
control_files.put_utf8(file, content)
745
control_files.unlock()
746
return self.open(a_bzrdir, _found=True)
749
super(BzrBranchFormat4, self).__init__()
750
self._matchingbzrdir = bzrdir.BzrDirFormat6()
752
def open(self, a_bzrdir, _found=False):
753
"""Return the branch object for a_bzrdir
755
_found is a private parameter, do not use it. It is used to indicate
756
if format probing has already be done.
759
# we are being called directly and must probe.
760
raise NotImplementedError
761
return BzrBranch(_format=self,
762
_control_files=a_bzrdir._control_files,
764
_repository=a_bzrdir.open_repository())
767
return "Bazaar-NG branch format 4"
770
class BzrBranchFormat5(BranchFormat):
771
"""Bzr branch format 5.
774
- a revision-history file.
776
- a lock dir guarding the branch itself
777
- all of this stored in a branch/ subdirectory
778
- works with shared repositories.
780
This format is new in bzr 0.8.
783
def get_format_string(self):
784
"""See BranchFormat.get_format_string()."""
785
return "Bazaar-NG branch format 5\n"
787
def get_format_description(self):
788
"""See BranchFormat.get_format_description()."""
789
return "Branch format 5"
791
def initialize(self, a_bzrdir):
792
"""Create a branch of this format in a_bzrdir."""
793
mutter('creating branch %r in %s', self, a_bzrdir.transport.base)
794
branch_transport = a_bzrdir.get_branch_transport(self)
795
utf8_files = [('revision-history', ''),
798
control_files = lockable_files.LockableFiles(branch_transport, 'lock',
800
control_files.create_lock()
801
control_files.lock_write()
802
control_files.put_utf8('format', self.get_format_string())
804
for file, content in utf8_files:
805
control_files.put_utf8(file, content)
807
control_files.unlock()
808
return self.open(a_bzrdir, _found=True, )
811
super(BzrBranchFormat5, self).__init__()
812
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
814
def open(self, a_bzrdir, _found=False):
815
"""Return the branch object for a_bzrdir
817
_found is a private parameter, do not use it. It is used to indicate
818
if format probing has already be done.
821
format = BranchFormat.find_format(a_bzrdir)
822
assert format.__class__ == self.__class__
823
transport = a_bzrdir.get_branch_transport(None)
824
control_files = lockable_files.LockableFiles(transport, 'lock',
826
return BzrBranch5(_format=self,
827
_control_files=control_files,
829
_repository=a_bzrdir.find_repository())
832
return "Bazaar-NG Metadir branch format 5"
835
class BranchReferenceFormat(BranchFormat):
836
"""Bzr branch reference format.
838
Branch references are used in implementing checkouts, they
839
act as an alias to the real branch which is at some other url.
846
def get_format_string(self):
847
"""See BranchFormat.get_format_string()."""
848
return "Bazaar-NG Branch Reference Format 1\n"
850
def get_format_description(self):
851
"""See BranchFormat.get_format_description()."""
852
return "Checkout reference format 1"
854
def initialize(self, a_bzrdir, target_branch=None):
855
"""Create a branch of this format in a_bzrdir."""
856
if target_branch is None:
857
# this format does not implement branch itself, thus the implicit
858
# creation contract must see it as uninitializable
859
raise errors.UninitializableFormat(self)
860
mutter('creating branch reference in %s', a_bzrdir.transport.base)
861
branch_transport = a_bzrdir.get_branch_transport(self)
862
branch_transport.put_bytes('location',
863
target_branch.bzrdir.root_transport.base)
864
branch_transport.put_bytes('format', self.get_format_string())
865
return self.open(a_bzrdir, _found=True)
868
super(BranchReferenceFormat, self).__init__()
869
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
871
def _make_reference_clone_function(format, a_branch):
872
"""Create a clone() routine for a branch dynamically."""
873
def clone(to_bzrdir, revision_id=None):
874
"""See Branch.clone()."""
875
return format.initialize(to_bzrdir, a_branch)
876
# cannot obey revision_id limits when cloning a reference ...
877
# FIXME RBC 20060210 either nuke revision_id for clone, or
878
# emit some sort of warning/error to the caller ?!
881
def open(self, a_bzrdir, _found=False):
882
"""Return the branch that the branch reference in a_bzrdir points at.
884
_found is a private parameter, do not use it. It is used to indicate
885
if format probing has already be done.
888
format = BranchFormat.find_format(a_bzrdir)
889
assert format.__class__ == self.__class__
890
transport = a_bzrdir.get_branch_transport(None)
891
real_bzrdir = bzrdir.BzrDir.open(transport.get('location').read())
892
result = real_bzrdir.open_branch()
893
# this changes the behaviour of result.clone to create a new reference
894
# rather than a copy of the content of the branch.
895
# I did not use a proxy object because that needs much more extensive
896
# testing, and we are only changing one behaviour at the moment.
897
# If we decide to alter more behaviours - i.e. the implicit nickname
898
# then this should be refactored to introduce a tested proxy branch
899
# and a subclass of that for use in overriding clone() and ....
901
result.clone = self._make_reference_clone_function(result)
905
# formats which have no format string are not discoverable
906
# and not independently creatable, so are not registered.
907
__default_format = BzrBranchFormat5()
908
BranchFormat.register_format(__default_format)
909
BranchFormat.register_format(BranchReferenceFormat())
910
BranchFormat.set_default_format(__default_format)
911
_legacy_formats = [BzrBranchFormat4(),
914
class BzrBranch(Branch):
915
"""A branch stored in the actual filesystem.
917
Note that it's "local" in the context of the filesystem; it doesn't
918
really matter if it's on an nfs/smb/afs/coda/... share, as long as
919
it's writable, and can be accessed via the normal filesystem API.
922
def __init__(self, transport=DEPRECATED_PARAMETER, init=DEPRECATED_PARAMETER,
923
relax_version_check=DEPRECATED_PARAMETER, _format=None,
924
_control_files=None, a_bzrdir=None, _repository=None):
925
"""Create new branch object at a particular location.
927
transport -- A Transport object, defining how to access files.
929
init -- If True, create new control files in a previously
930
unversioned directory. If False, the branch must already
933
relax_version_check -- If true, the usual check for the branch
934
version is not applied. This is intended only for
935
upgrade/recovery type use; it's not guaranteed that
936
all operations will work on old format branches.
939
self.bzrdir = bzrdir.BzrDir.open(transport.base)
941
self.bzrdir = a_bzrdir
942
self._transport = self.bzrdir.transport.clone('..')
943
self._base = self._transport.base
944
self._format = _format
945
if _control_files is None:
946
raise ValueError('BzrBranch _control_files is None')
947
self.control_files = _control_files
948
if deprecated_passed(init):
949
warn("BzrBranch.__init__(..., init=XXX): The init parameter is "
950
"deprecated as of bzr 0.8. Please use Branch.create().",
954
# this is slower than before deprecation, oh well never mind.
956
self._initialize(transport.base)
957
self._check_format(_format)
958
if deprecated_passed(relax_version_check):
959
warn("BzrBranch.__init__(..., relax_version_check=XXX_: The "
960
"relax_version_check parameter is deprecated as of bzr 0.8. "
961
"Please use BzrDir.open_downlevel, or a BzrBranchFormat's "
965
if (not relax_version_check
966
and not self._format.is_supported()):
967
raise errors.UnsupportedFormatError(format=fmt)
968
if deprecated_passed(transport):
969
warn("BzrBranch.__init__(transport=XXX...): The transport "
970
"parameter is deprecated as of bzr 0.8. "
971
"Please use Branch.open, or bzrdir.open_branch().",
974
self.repository = _repository
977
return '%s(%r)' % (self.__class__.__name__, self.base)
984
base = property(_get_base, doc="The URL for the root of this branch.")
986
def _finish_transaction(self):
987
"""Exit the current transaction."""
988
return self.control_files._finish_transaction()
990
def get_transaction(self):
991
"""Return the current active transaction.
993
If no transaction is active, this returns a passthrough object
994
for which all data is immediately flushed and no caching happens.
996
# this is an explicit function so that we can do tricky stuff
997
# when the storage in rev_storage is elsewhere.
998
# we probably need to hook the two 'lock a location' and
999
# 'have a transaction' together more delicately, so that
1000
# we can have two locks (branch and storage) and one transaction
1001
# ... and finishing the transaction unlocks both, but unlocking
1002
# does not. - RBC 20051121
1003
return self.control_files.get_transaction()
1005
def _set_transaction(self, transaction):
1006
"""Set a new active transaction."""
1007
return self.control_files._set_transaction(transaction)
1009
def abspath(self, name):
1010
"""See Branch.abspath."""
1011
return self.control_files._transport.abspath(name)
1013
def _check_format(self, format):
1014
"""Identify the branch format if needed.
1016
The format is stored as a reference to the format object in
1017
self._format for code that needs to check it later.
1019
The format parameter is either None or the branch format class
1020
used to open this branch.
1022
FIXME: DELETE THIS METHOD when pre 0.8 support is removed.
1025
format = BranchFormat.find_format(self.bzrdir)
1026
self._format = format
1027
mutter("got branch format %s", self._format)
1030
def get_root_id(self):
1031
"""See Branch.get_root_id."""
1032
tree = self.repository.revision_tree(self.last_revision())
1033
return tree.inventory.root.file_id
1035
def is_locked(self):
1036
return self.control_files.is_locked()
1038
def lock_write(self):
1039
self.repository.lock_write()
1041
self.control_files.lock_write()
1043
self.repository.unlock()
1046
def lock_read(self):
1047
self.repository.lock_read()
1049
self.control_files.lock_read()
1051
self.repository.unlock()
1055
# TODO: test for failed two phase locks. This is known broken.
1057
self.control_files.unlock()
1059
self.repository.unlock()
1061
def peek_lock_mode(self):
1062
if self.control_files._lock_count == 0:
1065
return self.control_files._lock_mode
1067
def get_physical_lock_status(self):
1068
return self.control_files.get_physical_lock_status()
1071
def print_file(self, file, revision_id):
1072
"""See Branch.print_file."""
1073
return self.repository.print_file(file, revision_id)
1076
def append_revision(self, *revision_ids):
1077
"""See Branch.append_revision."""
1078
for revision_id in revision_ids:
1079
mutter("add {%s} to revision-history" % revision_id)
1080
rev_history = self.revision_history()
1081
rev_history.extend(revision_ids)
1082
self.set_revision_history(rev_history)
1085
def set_revision_history(self, rev_history):
1086
"""See Branch.set_revision_history."""
1087
self.control_files.put_utf8(
1088
'revision-history', '\n'.join(rev_history))
1089
transaction = self.get_transaction()
1090
history = transaction.map.find_revision_history()
1091
if history is not None:
1092
# update the revision history in the identity map.
1093
history[:] = list(rev_history)
1094
# this call is disabled because revision_history is
1095
# not really an object yet, and the transaction is for objects.
1096
# transaction.register_dirty(history)
1098
transaction.map.add_revision_history(rev_history)
1099
# this call is disabled because revision_history is
1100
# not really an object yet, and the transaction is for objects.
1101
# transaction.register_clean(history)
1104
def revision_history(self):
1105
"""See Branch.revision_history."""
1106
transaction = self.get_transaction()
1107
history = transaction.map.find_revision_history()
1108
if history is not None:
1109
# mutter("cache hit for revision-history in %s", self)
1110
return list(history)
1111
decode_utf8 = cache_utf8.decode
1112
history = [decode_utf8(l.rstrip('\r\n')) for l in
1113
self.control_files.get('revision-history').readlines()]
1114
transaction.map.add_revision_history(history)
1115
# this call is disabled because revision_history is
1116
# not really an object yet, and the transaction is for objects.
1117
# transaction.register_clean(history, precious=True)
1118
return list(history)
1121
def generate_revision_history(self, revision_id, last_rev=None,
1123
"""Create a new revision history that will finish with revision_id.
1125
:param revision_id: the new tip to use.
1126
:param last_rev: The previous last_revision. If not None, then this
1127
must be a ancestory of revision_id, or DivergedBranches is raised.
1128
:param other_branch: The other branch that DivergedBranches should
1129
raise with respect to.
1131
# stop_revision must be a descendant of last_revision
1132
stop_graph = self.repository.get_revision_graph(revision_id)
1133
if last_rev is not None and last_rev not in stop_graph:
1134
# our previous tip is not merged into stop_revision
1135
raise errors.DivergedBranches(self, other_branch)
1136
# make a new revision history from the graph
1137
current_rev_id = revision_id
1139
while current_rev_id not in (None, _mod_revision.NULL_REVISION):
1140
new_history.append(current_rev_id)
1141
current_rev_id_parents = stop_graph[current_rev_id]
1143
current_rev_id = current_rev_id_parents[0]
1145
current_rev_id = None
1146
new_history.reverse()
1147
self.set_revision_history(new_history)
1150
def update_revisions(self, other, stop_revision=None):
1151
"""See Branch.update_revisions."""
1154
if stop_revision is None:
1155
stop_revision = other.last_revision()
1156
if stop_revision is None:
1157
# if there are no commits, we're done.
1159
# whats the current last revision, before we fetch [and change it
1161
last_rev = self.last_revision()
1162
# we fetch here regardless of whether we need to so that we pickup
1164
self.fetch(other, stop_revision)
1165
my_ancestry = self.repository.get_ancestry(last_rev)
1166
if stop_revision in my_ancestry:
1167
# last_revision is a descendant of stop_revision
1169
self.generate_revision_history(stop_revision, last_rev=last_rev,
1174
def basis_tree(self):
1175
"""See Branch.basis_tree."""
1176
return self.repository.revision_tree(self.last_revision())
1178
@deprecated_method(zero_eight)
1179
def working_tree(self):
1180
"""Create a Working tree object for this branch."""
1182
from bzrlib.transport.local import LocalTransport
1183
if (self.base.find('://') != -1 or
1184
not isinstance(self._transport, LocalTransport)):
1185
raise NoWorkingTree(self.base)
1186
return self.bzrdir.open_workingtree()
1189
def pull(self, source, overwrite=False, stop_revision=None):
1190
"""See Branch.pull."""
1193
old_count = len(self.revision_history())
1195
self.update_revisions(source, stop_revision)
1196
except DivergedBranches:
1200
self.set_revision_history(source.revision_history())
1201
new_count = len(self.revision_history())
1202
return new_count - old_count
1206
def get_parent(self):
1207
"""See Branch.get_parent."""
1209
_locs = ['parent', 'pull', 'x-pull']
1210
assert self.base[-1] == '/'
1213
parent = self.control_files.get(l).read().strip('\n')
1216
# This is an old-format absolute path to a local branch
1217
# turn it into a url
1218
if parent.startswith('/'):
1219
parent = urlutils.local_path_to_url(parent.decode('utf8'))
1221
return urlutils.join(self.base[:-1], parent)
1222
except errors.InvalidURLJoin, e:
1223
raise errors.InaccessibleParent(parent, self.base)
1226
def get_push_location(self):
1227
"""See Branch.get_push_location."""
1228
push_loc = self.get_config().get_user_option('push_location')
1231
def set_push_location(self, location):
1232
"""See Branch.set_push_location."""
1233
self.get_config().set_user_option('push_location', location,
1237
def set_parent(self, url):
1238
"""See Branch.set_parent."""
1239
# TODO: Maybe delete old location files?
1240
# URLs should never be unicode, even on the local fs,
1241
# FIXUP this and get_parent in a future branch format bump:
1242
# read and rewrite the file, and have the new format code read
1243
# using .get not .get_utf8. RBC 20060125
1245
self.control_files._transport.delete('parent')
1247
if isinstance(url, unicode):
1249
url = url.encode('ascii')
1250
except UnicodeEncodeError:
1251
raise bzrlib.errors.InvalidURL(url,
1252
"Urls must be 7-bit ascii, "
1253
"use bzrlib.urlutils.escape")
1255
url = urlutils.relative_url(self.base, url)
1256
self.control_files.put('parent', StringIO(url + '\n'))
1258
@deprecated_function(zero_nine)
1259
def tree_config(self):
1260
"""DEPRECATED; call get_config instead.
1261
TreeConfig has become part of BranchConfig."""
1262
return TreeConfig(self)
1265
class BzrBranch5(BzrBranch):
1266
"""A format 5 branch. This supports new features over plan branches.
1268
It has support for a master_branch which is the data for bound branches.
1276
super(BzrBranch5, self).__init__(_format=_format,
1277
_control_files=_control_files,
1279
_repository=_repository)
1282
def pull(self, source, overwrite=False, stop_revision=None):
1283
"""Updates branch.pull to be bound branch aware."""
1284
bound_location = self.get_bound_location()
1285
if source.base != bound_location:
1286
# not pulling from master, so we need to update master.
1287
master_branch = self.get_master_branch()
1289
master_branch.pull(source)
1290
source = master_branch
1291
return super(BzrBranch5, self).pull(source, overwrite, stop_revision)
1293
def get_bound_location(self):
1295
return self.control_files.get_utf8('bound').read()[:-1]
1296
except errors.NoSuchFile:
1300
def get_master_branch(self):
1301
"""Return the branch we are bound to.
1303
:return: Either a Branch, or None
1305
This could memoise the branch, but if thats done
1306
it must be revalidated on each new lock.
1307
So for now we just don't memoise it.
1308
# RBC 20060304 review this decision.
1310
bound_loc = self.get_bound_location()
1314
return Branch.open(bound_loc)
1315
except (errors.NotBranchError, errors.ConnectionError), e:
1316
raise errors.BoundBranchConnectionFailure(
1320
def set_bound_location(self, location):
1321
"""Set the target where this branch is bound to.
1323
:param location: URL to the target branch
1326
self.control_files.put_utf8('bound', location+'\n')
1329
self.control_files._transport.delete('bound')
1335
def bind(self, other):
1336
"""Bind this branch to the branch other.
1338
This does not push or pull data between the branches, though it does
1339
check for divergence to raise an error when the branches are not
1340
either the same, or one a prefix of the other. That behaviour may not
1341
be useful, so that check may be removed in future.
1343
:param other: The branch to bind to
1346
# TODO: jam 20051230 Consider checking if the target is bound
1347
# It is debatable whether you should be able to bind to
1348
# a branch which is itself bound.
1349
# Committing is obviously forbidden,
1350
# but binding itself may not be.
1351
# Since we *have* to check at commit time, we don't
1352
# *need* to check here
1354
# we want to raise diverged if:
1355
# last_rev is not in the other_last_rev history, AND
1356
# other_last_rev is not in our history, and do it without pulling
1358
last_rev = self.last_revision()
1359
if last_rev is not None:
1362
other_last_rev = other.last_revision()
1363
if other_last_rev is not None:
1364
# neither branch is new, we have to do some work to
1365
# ascertain diversion.
1366
remote_graph = other.repository.get_revision_graph(
1368
local_graph = self.repository.get_revision_graph(last_rev)
1369
if (last_rev not in remote_graph and
1370
other_last_rev not in local_graph):
1371
raise errors.DivergedBranches(self, other)
1374
self.set_bound_location(other.base)
1378
"""If bound, unbind"""
1379
return self.set_bound_location(None)
1383
"""Synchronise this branch with the master branch if any.
1385
:return: None or the last_revision that was pivoted out during the
1388
master = self.get_master_branch()
1389
if master is not None:
1390
old_tip = self.last_revision()
1391
self.pull(master, overwrite=True)
1392
if old_tip in self.repository.get_ancestry(self.last_revision()):
1398
class BranchTestProviderAdapter(object):
1399
"""A tool to generate a suite testing multiple branch formats at once.
1401
This is done by copying the test once for each transport and injecting
1402
the transport_server, transport_readonly_server, and branch_format
1403
classes into each copy. Each copy is also given a new id() to make it
1407
def __init__(self, transport_server, transport_readonly_server, formats):
1408
self._transport_server = transport_server
1409
self._transport_readonly_server = transport_readonly_server
1410
self._formats = formats
1412
def adapt(self, test):
1413
result = TestSuite()
1414
for branch_format, bzrdir_format in self._formats:
1415
new_test = deepcopy(test)
1416
new_test.transport_server = self._transport_server
1417
new_test.transport_readonly_server = self._transport_readonly_server
1418
new_test.bzrdir_format = bzrdir_format
1419
new_test.branch_format = branch_format
1420
def make_new_test_id():
1421
new_id = "%s(%s)" % (new_test.id(), branch_format.__class__.__name__)
1422
return lambda: new_id
1423
new_test.id = make_new_test_id()
1424
result.addTest(new_test)
1428
class BranchCheckResult(object):
1429
"""Results of checking branch consistency.
1434
def __init__(self, branch):
1435
self.branch = branch
1437
def report_results(self, verbose):
1438
"""Report the check results via trace.note.
1440
:param verbose: Requests more detailed display of what was checked,
1443
note('checked branch %s format %s',
1445
self.branch._format)
1009
1448
######################################################################
1013
def is_control_file(filename):
1014
## FIXME: better check
1015
filename = os.path.normpath(filename)
1016
while filename != '':
1017
head, tail = os.path.split(filename)
1018
## mutter('check %r for control file' % ((head, tail), ))
1019
if tail == bzrlib.BZRDIR:
1021
if filename == head:
1028
def _gen_revision_id(when):
1029
"""Return new revision-id."""
1030
s = '%s-%s-' % (user_email(), compact_date(when))
1031
s += hexlify(rand_bytes(8))
1035
def gen_file_id(name):
1036
"""Return new file id.
1038
This should probably generate proper UUIDs, but for the moment we
1039
cope with just randomness because running uuidgen every time is
1041
idx = name.rfind('/')
1043
name = name[idx+1 : ]
1044
idx = name.rfind('\\')
1046
name = name[idx+1 : ]
1048
name = name.lstrip('.')
1050
s = hexlify(rand_bytes(8))
1051
return '-'.join((name, compact_date(time.time()), s))
1452
@deprecated_function(zero_eight)
1453
def is_control_file(*args, **kwargs):
1454
"""See bzrlib.workingtree.is_control_file."""
1455
return bzrlib.workingtree.is_control_file(*args, **kwargs)
added
removed
bzrlib/branch.py
