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- Committer: Olaf Conradi
- Date: 2006-03-18 00:12:57 UTC
- mto: (1661.1.1 bzr.mbp.remember)
- mto: This revision was merged to the branch mainline in revision 1663.
- Revision ID: olaf@conradi.org-20060318001257-bdb0088faae84e76
Merge now accepts option --remember to set parent location (closes #35350).
- files added:
- BRANCH.TODO
- bzrlib/doc
- bzrlib/doc/api
- bzrlib/export
- bzrlib/plugins
- bzrlib/store
- bzrlib/store/revision
- bzrlib/store/versioned
- bzrlib/tests
- bzrlib/tests/blackbox
- bzrlib/tests/branch_implementations
- bzrlib/tests/bzrdir_implementations
- bzrlib/tests/interrepository_implementations
- bzrlib/tests/interversionedfile_implementations
- bzrlib/tests/repository_implementations
- bzrlib/tests/revisionstore_implementations
- bzrlib/tests/workingtree_implementations
- bzrlib/transport
- bzrlib/transport/http
- bzrlib/ui
- bzrlib/util
- bzrlib/util/configobj
- bzrlib/util/configobj/docs
- bzrlib/util/effbot
- bzrlib/util/effbot/org
- contrib/emacs
- tools
- tools/doc_generate
- files removed:
- bzrlib/mdiff.py
- files renamed:
- bzrlib/store.py => bzrlib/store/__init__.py
- elementtree/ => bzrlib/util/elementtree/
- urlgrabber/ => bzrlib/util/urlgrabber/
- bzrlib/xml.py => bzrlib/xml_serializer.py
- contrib/bash/bzr => contrib/bash/bzr.simple
- bzrlib/newinventory.py => contrib/newinventory.py
- files modified:
- .bzrignore
- bzr *
- setup.py *
added
removed
bzrlib/branch.py
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# Copyright (C) 2005 Canonical Ltd
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# Copyright (C) 2005, 2006 Canonical Ltd
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#
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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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#
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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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#
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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 sets import Set
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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 copy import deepcopy
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from cStringIO import StringIO
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import errno
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import os
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import shutil
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import sys
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from unittest import TestSuite
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from warnings import warn
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import bzrlib
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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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run into the root."""
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if f == None:
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f = os.getcwd()
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elif hasattr(os.path, 'realpath'):
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f = os.path.realpath(f)
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else:
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f = os.path.abspath(f)
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orig_f = f
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while True:
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if os.path.exists(os.path.join(f, bzrlib.BZRDIR)):
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return f
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head, tail = os.path.split(f)
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if head == 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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f = head
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import bzrlib.bzrdir as bzrdir
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from bzrlib.config import TreeConfig
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from bzrlib.decorators import needs_read_lock, needs_write_lock
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from bzrlib.delta import compare_trees
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import bzrlib.errors as errors
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from bzrlib.errors import (BzrError, InvalidRevisionNumber, InvalidRevisionId,
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NoSuchRevision, HistoryMissing, NotBranchError,
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DivergedBranches, LockError,
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UninitializableFormat,
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UnlistableStore,
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UnlistableBranch, NoSuchFile, NotVersionedError,
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NoWorkingTree)
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import bzrlib.inventory as inventory
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from bzrlib.inventory import Inventory
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from bzrlib.lockable_files import LockableFiles, TransportLock
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from bzrlib.lockdir import LockDir
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from bzrlib.osutils import (isdir, quotefn,
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rename, splitpath, sha_file,
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file_kind, abspath, normpath, pathjoin,
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safe_unicode,
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)
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from bzrlib.textui import show_status
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from bzrlib.trace import mutter, note
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from bzrlib.tree import EmptyTree, RevisionTree
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from bzrlib.repository import Repository
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from bzrlib.revision import (
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get_intervening_revisions,
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is_ancestor,
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NULL_REVISION,
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Revision,
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)
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from bzrlib.store import copy_all
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from bzrlib.symbol_versioning import *
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import bzrlib.transactions as transactions
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from bzrlib.transport import Transport, get_transport
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from bzrlib.tree import EmptyTree, RevisionTree
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import bzrlib.ui
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import bzrlib.xml5
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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 objects
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class Branch:
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class Branch(object):
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"""Branch holding a history of revisions.
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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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TODO: mkdir() method.
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base
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Base directory/url of the branch.
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"""
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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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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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be versioned.
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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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"""
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if init:
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self.base = os.path.realpath(base)
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self._make_control()
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elif find_root:
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self.base = find_branch_root(base)
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else:
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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._check_format()
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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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def __str__(self):
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return '%s(%r)' % (self.__class__.__name__, self.base)
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__repr__ = __str__
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# this is really an instance variable - FIXME move it there
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# - RBC 20060112
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base = None
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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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@staticmethod
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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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@staticmethod
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def open(base, _unsupported=False):
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"""Open the repository rooted at base.
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For instance, if the repository is at URL/.bzr/repository,
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Repository.open(URL) -> a Repository instance.
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"""
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control = bzrdir.BzrDir.open(base, _unsupported)
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return control.open_branch(_unsupported)
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@staticmethod
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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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"""
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control, relpath = bzrdir.BzrDir.open_containing(url)
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return control.open_branch(), relpath
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@staticmethod
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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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through a BzrDir.
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"""
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return bzrdir.BzrDir.create_standalone_workingtree(base).branch
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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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"""
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# seems to be unused, 2006-01-13 mbp
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warn('%s is deprecated' % self.setup_caching)
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self.cache_root = cache_root
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def _get_nick(self):
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cfg = self.tree_config()
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return cfg.get_option(u"nickname", default=self.base.split('/')[-2])
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def _set_nick(self, nick):
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cfg = self.tree_config()
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cfg.set_option(nick, "nickname")
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assert cfg.get_option("nickname") == nick
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nick = property(_get_nick, _set_nick)
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def lock_write(self):
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raise NotImplementedError('lock_write is abstract')
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def lock_read(self):
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raise NotImplementedError('lock_read is abstract')
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def unlock(self):
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raise NotImplementedError('unlock is abstract')
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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 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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# FIXME: windows
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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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return rp
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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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"""
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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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import codecs
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return codecs.open(fn, mode + 'b', 'utf-8',
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buffering=60000)
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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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"""
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raise NotImplementedError('abspath is abstract')
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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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:type other: Branch
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"""
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raise errors.UpgradeRequired(self.base)
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@needs_write_lock
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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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of the branch.
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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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(copied, failures).
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"""
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if self.base == from_branch.base:
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raise Exception("can't fetch from a branch to itself %s, %s" %
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(self.base, to_branch.base))
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if pb is None:
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nested_pb = bzrlib.ui.ui_factory.nested_progress_bar()
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pb = nested_pb
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else:
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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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"""
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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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before = time.time()
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# ElementTree does its own conversion from UTF-8, so open in
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# binary.
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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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return inv
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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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"""
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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.write_xml(tmpf)
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tmpf.close()
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inv_fname = self.controlfilename('inventory')
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if sys.platform == 'win32':
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os.remove(inv_fname)
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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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not (yet) exist.
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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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higher-level method.
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>>> b = ScratchBranch(files=['foo'])
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>>> 'foo' in b.unknowns()
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True
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>>> b.show_status()
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? foo
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>>> b.add('foo')
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>>> 'foo' in b.unknowns()
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False
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>>> bool(b.inventory.path2id('foo'))
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True
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>>> b.show_status()
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A foo
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>>> b.add('foo')
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Traceback (most recent call last):
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...
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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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"""
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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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files = [files]
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nested_pb = None
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from_branch.lock_read()
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try:
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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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if from_history:
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last_revision = from_history[-1]
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else:
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# no history in the source branch
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last_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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pb=nested_pb)
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finally:
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if nested_pb is not None:
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nested_pb.finished()
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from_branch.unlock()
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def get_bound_location(self):
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"""Return the URL of the rbanch we are bound to.
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Older format branches cannot bind, please be sure to use a metadir
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branch.
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"""
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return None
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def get_master_branch(self):
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"""Return the branch we are bound to.
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inv = self.read_working_inventory()
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for f in files:
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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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fp = splitpath(f)
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if len(fp) == 0:
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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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try:
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kind = file_kind(fullpath)
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except OSError:
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# maybe something better?
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bailout('cannot add: not a regular file or directory: %s' % quotefn(f))
311
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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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if verbose:
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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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:return: Either a Branch, or None
238
"""
239
return None
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def get_root_id(self):
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"""Return the id of this branches root"""
243
raise NotImplementedError('get_root_id is abstract')
244
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def print_file(self, file, revision_id):
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"""Print `file` to stdout."""
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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)
331
if not file_id:
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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):
337
"""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.add('foo')
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>>> b.inventory.has_filename('foo')
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True
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>>> b.remove('foo')
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>>> b.working_tree().has_filename('foo')
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True
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>>> b.inventory.has_filename('foo')
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False
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>>> b = ScratchBranch(files=['foo'])
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>>> b.add('foo')
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>>> b.commit('one')
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>>> b.remove('foo')
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>>> b.commit('two')
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>>> b.inventory.has_filename('foo')
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False
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>>> b.basis_tree().has_filename('foo')
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False
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>>> b.working_tree().has_filename('foo')
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True
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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
370
other tools. Maybe an option.
371
"""
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## TODO: Normalize names
373
## TODO: Remove nested loops; better scalability
374
375
if isinstance(files, types.StringTypes):
376
files = [files]
377
378
tree = self.working_tree()
379
inv = tree.inventory
380
381
# do this before any modifications
382
for f in files:
383
fid = inv.path2id(f)
384
if not fid:
385
bailout("cannot remove unversioned file %s" % quotefn(f))
386
mutter("remove inventory entry %s {%s}" % (quotefn(f), fid))
387
if verbose:
388
# having remove it, it must be either ignored or unknown
389
if tree.is_ignored(f):
390
new_status = 'I'
391
else:
392
new_status = '?'
393
show_status(new_status, inv[fid].kind, quotefn(f))
394
del inv[fid]
395
396
self._write_inventory(inv)
397
398
399
def unknowns(self):
400
"""Return all unknown files.
401
402
These are files in the working directory that are not versioned or
403
control files or ignored.
404
405
>>> b = ScratchBranch(files=['foo', 'foo~'])
406
>>> list(b.unknowns())
407
['foo']
408
>>> b.add('foo')
409
>>> list(b.unknowns())
410
[]
411
>>> b.remove('foo')
412
>>> list(b.unknowns())
413
['foo']
414
"""
415
return self.working_tree().unknowns()
416
417
418
def commit(self, message, timestamp=None, timezone=None,
419
committer=None,
420
verbose=False):
421
"""Commit working copy as a new revision.
422
423
The basic approach is to add all the file texts into the
424
store, then the inventory, then make a new revision pointing
425
to that inventory and store that.
426
427
This is not quite safe if the working copy changes during the
428
commit; for the moment that is simply not allowed. A better
429
approach is to make a temporary copy of the files before
430
computing their hashes, and then add those hashes in turn to
431
the inventory. This should mean at least that there are no
432
broken hash pointers. There is no way we can get a snapshot
433
of the whole directory at an instant. This would also have to
434
be robust against files disappearing, moving, etc. So the
435
whole thing is a bit hard.
436
437
timestamp -- if not None, seconds-since-epoch for a
438
postdated/predated commit.
439
"""
440
441
## TODO: Show branch names
442
443
# TODO: Don't commit if there are no changes, unless forced?
444
445
# First walk over the working inventory; and both update that
446
# and also build a new revision inventory. The revision
447
# 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
451
# working inventory.
452
453
work_inv = self.read_working_inventory()
454
inv = Inventory()
455
basis = self.basis_tree()
456
basis_inv = basis.inventory
457
missing_ids = []
458
for path, entry in work_inv.iter_entries():
459
## TODO: Cope with files that have gone missing.
460
461
## TODO: Check that the file kind has not changed from the previous
462
## revision of this file (if any).
463
464
entry = entry.copy()
465
466
p = self.abspath(path)
467
file_id = entry.file_id
468
mutter('commit prep file %s, id %r ' % (p, file_id))
469
470
if not os.path.exists(p):
471
mutter(" file is missing, removing from inventory")
472
if verbose:
473
show_status('D', entry.kind, quotefn(path))
474
missing_ids.append(file_id)
475
continue
476
477
# TODO: Handle files that have been deleted
478
479
# TODO: Maybe a special case for empty files? Seems a
480
# waste to store them many times.
481
482
inv.add(entry)
483
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))
489
490
if entry.kind == 'directory':
491
if not isdir(p):
492
bailout("%s is entered as directory but not a directory" % quotefn(p))
493
elif entry.kind == 'file':
494
if not isfile(p):
495
bailout("%s is entered as file but is not a file" % quotefn(p))
496
497
content = file(p, 'rb').read()
498
499
entry.text_sha1 = sha_string(content)
500
entry.text_size = len(content)
501
502
old_ie = basis_inv.has_id(file_id) and basis_inv[file_id]
503
if (old_ie
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}' %
509
entry.text_id)
510
511
else:
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)
515
if verbose:
516
if not old_ie:
517
state = 'A'
518
elif (old_ie.name == entry.name
519
and old_ie.parent_id == entry.parent_id):
520
state = 'M'
521
else:
522
state = 'R'
523
524
show_status(state, entry.kind, quotefn(path))
525
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
529
# have to test.
530
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]
535
536
537
inv_id = rev_id = _gen_revision_id(time.time())
538
539
inv_tmp = tempfile.TemporaryFile()
540
inv.write_xml(inv_tmp)
541
inv_tmp.seek(0)
542
self.inventory_store.add(inv_tmp, inv_id)
543
mutter('new inventory_id is {%s}' % inv_id)
544
545
self._write_inventory(work_inv)
546
547
if timestamp == None:
548
timestamp = time.time()
549
550
if committer == None:
551
committer = username()
552
553
if timezone == None:
554
timezone = local_time_offset()
555
556
mutter("building commit log message")
557
rev = Revision(timestamp=timestamp,
558
timezone=timezone,
559
committer=committer,
560
precursor = self.last_patch(),
561
message = message,
562
inventory_id=inv_id,
563
revision_id=rev_id)
564
565
rev_tmp = tempfile.TemporaryFile()
566
rev.write_xml(rev_tmp)
567
rev_tmp.seek(0)
568
self.revision_store.add(rev_tmp, rev_id)
569
mutter("new revision_id is {%s}" % rev_id)
570
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
573
## matter.
574
575
## TODO: Read back the just-generated changeset, and make sure it
576
## applies and recreates the right state.
577
578
## TODO: Also calculate and store the inventory SHA1
579
mutter("committing patch r%d" % (self.revno() + 1))
580
581
582
self.append_revision(rev_id)
583
584
if verbose:
585
note("commited r%d" % self.revno())
586
587
588
def append_revision(self, revision_id):
589
mutter("add {%s} to revision-history" % revision_id)
590
rev_history = self.revision_history()
591
592
tmprhname = self.controlfilename('revision-history.tmp')
593
rhname = self.controlfilename('revision-history')
594
595
f = file(tmprhname, 'wt')
596
rev_history.append(revision_id)
597
f.write('\n'.join(rev_history))
598
f.write('\n')
599
f.close()
600
601
if sys.platform == 'win32':
602
os.remove(rhname)
603
os.rename(tmprhname, rhname)
604
605
606
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
611
return r
612
613
614
def get_inventory(self, inventory_id):
615
"""Get Inventory object by hash.
616
617
TODO: Perhaps for this and similar methods, take a revision
618
parameter which can be either an integer revno or a
619
string hash."""
620
i = Inventory.read_xml(self.inventory_store[inventory_id])
621
return i
622
623
624
def get_revision_inventory(self, revision_id):
625
"""Return inventory of a past revision."""
626
if revision_id == None:
627
return Inventory()
628
else:
629
return self.get_inventory(self.get_revision(revision_id).inventory_id)
630
247
raise NotImplementedError('print_file is abstract')
248
249
def append_revision(self, *revision_ids):
250
raise NotImplementedError('append_revision is abstract')
251
252
def set_revision_history(self, rev_history):
253
raise NotImplementedError('set_revision_history is abstract')
631
254
632
255
def revision_history(self):
633
"""Return sequence of revision hashes on to this branch.
634
635
>>> ScratchBranch().revision_history()
636
[]
637
"""
638
return [l.rstrip('\r\n') for l in self.controlfile('revision-history', 'r').readlines()]
639
256
"""Return sequence of revision hashes on to this branch."""
257
raise NotImplementedError('revision_history is abstract')
640
258
641
259
def revno(self):
642
260
"""Return current revision number for this branch.
643
261
644
262
That is equivalent to the number of revisions committed to
645
263
this branch.
646
647
>>> b = ScratchBranch()
648
>>> b.revno()
649
0
650
>>> b.commit('no foo')
651
>>> b.revno()
652
1
653
264
"""
654
265
return len(self.revision_history())
655
266
656
657
def last_patch(self):
658
"""Return last patch hash, or None if no history.
659
660
>>> ScratchBranch().last_patch() == None
661
True
662
"""
267
def unbind(self):
268
"""Older format branches cannot bind or unbind."""
269
raise errors.UpgradeRequired(self.base)
270
271
def last_revision(self):
272
"""Return last patch hash, or None if no history."""
663
273
ph = self.revision_history()
664
274
if ph:
665
275
return ph[-1]
666
276
else:
667
277
return None
668
669
670
def lookup_revision(self, revno):
671
"""Return revision hash for revision number."""
278
279
def missing_revisions(self, other, stop_revision=None):
280
"""Return a list of new revisions that would perfectly fit.
281
282
If self and other have not diverged, return a list of the revisions
283
present in other, but missing from self.
284
285
>>> from bzrlib.workingtree import WorkingTree
286
>>> bzrlib.trace.silent = True
287
>>> d1 = bzrdir.ScratchDir()
288
>>> br1 = d1.open_branch()
289
>>> wt1 = d1.open_workingtree()
290
>>> d2 = bzrdir.ScratchDir()
291
>>> br2 = d2.open_branch()
292
>>> wt2 = d2.open_workingtree()
293
>>> br1.missing_revisions(br2)
294
[]
295
>>> wt2.commit("lala!", rev_id="REVISION-ID-1")
296
>>> br1.missing_revisions(br2)
297
[u'REVISION-ID-1']
298
>>> br2.missing_revisions(br1)
299
[]
300
>>> wt1.commit("lala!", rev_id="REVISION-ID-1")
301
>>> br1.missing_revisions(br2)
302
[]
303
>>> wt2.commit("lala!", rev_id="REVISION-ID-2A")
304
>>> br1.missing_revisions(br2)
305
[u'REVISION-ID-2A']
306
>>> wt1.commit("lala!", rev_id="REVISION-ID-2B")
307
>>> br1.missing_revisions(br2)
308
Traceback (most recent call last):
309
DivergedBranches: These branches have diverged. Try merge.
310
"""
311
self_history = self.revision_history()
312
self_len = len(self_history)
313
other_history = other.revision_history()
314
other_len = len(other_history)
315
common_index = min(self_len, other_len) -1
316
if common_index >= 0 and \
317
self_history[common_index] != other_history[common_index]:
318
raise DivergedBranches(self, other)
319
320
if stop_revision is None:
321
stop_revision = other_len
322
else:
323
assert isinstance(stop_revision, int)
324
if stop_revision > other_len:
325
raise bzrlib.errors.NoSuchRevision(self, stop_revision)
326
return other_history[self_len:stop_revision]
327
328
def update_revisions(self, other, stop_revision=None):
329
"""Pull in new perfect-fit revisions.
330
331
:param other: Another Branch to pull from
332
:param stop_revision: Updated until the given revision
333
:return: None
334
"""
335
raise NotImplementedError('update_revisions is abstract')
336
337
def pullable_revisions(self, other, stop_revision):
338
raise NotImplementedError('pullable_revisions is abstract')
339
340
def revision_id_to_revno(self, revision_id):
341
"""Given a revision id, return its revno"""
342
if revision_id is None:
343
return 0
344
history = self.revision_history()
345
try:
346
return history.index(revision_id) + 1
347
except ValueError:
348
raise bzrlib.errors.NoSuchRevision(self, revision_id)
349
350
def get_rev_id(self, revno, history=None):
351
"""Find the revision id of the specified revno."""
672
352
if revno == 0:
673
353
return None
674
675
try:
676
# list is 0-based; revisions are 1-based
677
return self.revision_history()[revno-1]
678
except IndexError:
679
raise BzrError("no such revision %s" % revno)
680
681
682
def revision_tree(self, revision_id):
683
"""Return Tree for a revision on this branch.
684
685
`revision_id` may be None for the null revision, in which case
686
an `EmptyTree` is returned."""
687
688
if revision_id == None:
689
return EmptyTree()
690
else:
691
inv = self.get_revision_inventory(revision_id)
692
return RevisionTree(self.text_store, inv)
693
694
695
def working_tree(self):
696
"""Return a `Tree` for the working copy."""
697
return WorkingTree(self.base, self.read_working_inventory())
698
354
if history is None:
355
history = self.revision_history()
356
elif revno <= 0 or revno > len(history):
357
raise bzrlib.errors.NoSuchRevision(self, revno)
358
return history[revno - 1]
359
360
def pull(self, source, overwrite=False, stop_revision=None):
361
raise NotImplementedError('pull is abstract')
699
362
700
363
def basis_tree(self):
701
364
"""Return `Tree` object for last revision.
702
365
703
366
If there are no revisions yet, return an `EmptyTree`.
704
705
>>> b = ScratchBranch(files=['foo'])
706
>>> b.basis_tree().has_filename('foo')
707
False
708
>>> b.working_tree().has_filename('foo')
709
True
710
>>> b.add('foo')
711
>>> b.commit('add foo')
712
>>> b.basis_tree().has_filename('foo')
713
True
714
367
"""
715
r = self.last_patch()
716
if r == None:
717
return EmptyTree()
718
else:
719
return RevisionTree(self.text_store, self.get_revision_inventory(r))
720
721
722
723
def write_log(self, show_timezone='original', verbose=False):
724
"""Write out human-readable log of commits to this branch
725
726
utc -- If true, show dates in universal time, not local time."""
727
## TODO: Option to choose either original, utc or local timezone
728
revno = 1
729
precursor = None
730
for p in self.revision_history():
731
print '-' * 40
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,
738
show_timezone))
739
740
## opportunistic consistency check, same as check_patch_chaining
741
if rev.precursor != precursor:
742
bailout("mismatched precursor!")
743
744
print 'message:'
745
if not rev.message:
746
print ' (no message)'
747
else:
748
for l in rev.message.split('\n'):
749
print ' ' + l
750
751
if verbose == True and precursor != None:
752
print 'changed files:'
753
tree = self.revision_tree(p)
754
prevtree = self.revision_tree(precursor)
755
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)
765
766
revno += 1
767
precursor = p
768
368
return self.repository.revision_tree(self.last_revision())
769
369
770
370
def rename_one(self, from_rel, to_rel):
771
371
"""Rename one file.
772
372
773
373
This can change the directory or the filename or both.
774
"""
775
tree = self.working_tree()
776
inv = tree.inventory
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)
781
782
file_id = inv.path2id(from_rel)
783
if file_id == None:
784
bailout("can't rename: old name %r is not versioned" % from_rel)
785
786
if inv.path2id(to_rel):
787
bailout("can't rename: new name %r is already versioned" % to_rel)
788
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)
793
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)
800
801
inv.rename(file_id, to_dir_id, to_tail)
802
803
print "%s => %s" % (from_rel, to_rel)
804
805
from_abs = self.abspath(from_rel)
806
to_abs = self.abspath(to_rel)
807
try:
808
os.rename(from_abs, to_abs)
809
except OSError, e:
810
bailout("failed to rename %r to %r: %s"
811
% (from_abs, to_abs, e[1]),
812
["rename rolled back"])
813
814
self._write_inventory(inv)
815
816
374
"""
375
raise NotImplementedError('rename_one is abstract')
817
376
818
377
def move(self, from_paths, to_name):
819
378
"""Rename files.
825
384
826
385
Note that to_name is only the last component of the new name;
827
386
this doesn't change the directory.
828
"""
829
## TODO: Option to move IDs only
830
assert not isinstance(from_paths, basestring)
831
tree = self.working_tree()
832
inv = tree.inventory
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)
844
845
to_idpath = Set(inv.get_idpath(to_dir_id))
846
847
for f in from_paths:
848
if not tree.has_filename(f):
849
bailout("%r does not exist in working tree" % f)
850
f_id = inv.path2id(f)
851
if f_id == None:
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)
859
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.
863
864
for f in from_paths:
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)
387
388
This returns a list of (from_path, to_path) pairs for each
389
entry that is moved.
390
"""
391
raise NotImplementedError('move is abstract')
392
393
def get_parent(self):
394
"""Return the parent location of the branch.
395
396
This is the default location for push/pull/missing. The usual
397
pattern is that the user can override it by specifying a
398
location.
399
"""
400
raise NotImplementedError('get_parent is abstract')
401
402
def get_push_location(self):
403
"""Return the None or the location to push this branch to."""
404
raise NotImplementedError('get_push_location is abstract')
405
406
def set_push_location(self, location):
407
"""Set a new push location for this branch."""
408
raise NotImplementedError('set_push_location is abstract')
409
410
def set_parent(self, url):
411
raise NotImplementedError('set_parent is abstract')
412
413
@needs_write_lock
414
def update(self):
415
"""Synchronise this branch with the master branch if any.
416
417
:return: None or the last_revision pivoted out during the update.
418
"""
419
return None
420
421
def check_revno(self, revno):
422
"""\
423
Check whether a revno corresponds to any revision.
424
Zero (the NULL revision) is considered valid.
425
"""
426
if revno != 0:
427
self.check_real_revno(revno)
428
429
def check_real_revno(self, revno):
430
"""\
431
Check whether a revno corresponds to a real revision.
432
Zero (the NULL revision) is considered invalid
433
"""
434
if revno < 1 or revno > self.revno():
435
raise InvalidRevisionNumber(revno)
436
437
@needs_read_lock
438
def clone(self, *args, **kwargs):
439
"""Clone this branch into to_bzrdir preserving all semantic values.
440
441
revision_id: if not None, the revision history in the new branch will
442
be truncated to end with revision_id.
443
"""
444
# for API compatability, until 0.8 releases we provide the old api:
445
# def clone(self, to_location, revision=None, basis_branch=None, to_branch_format=None):
446
# after 0.8 releases, the *args and **kwargs should be changed:
447
# def clone(self, to_bzrdir, revision_id=None):
448
if (kwargs.get('to_location', None) or
449
kwargs.get('revision', None) or
450
kwargs.get('basis_branch', None) or
451
(len(args) and isinstance(args[0], basestring))):
452
# backwards compatability api:
453
warn("Branch.clone() has been deprecated for BzrDir.clone() from"
454
" bzrlib 0.8.", DeprecationWarning, stacklevel=3)
455
# get basis_branch
456
if len(args) > 2:
457
basis_branch = args[2]
458
else:
459
basis_branch = kwargs.get('basis_branch', None)
460
if basis_branch:
461
basis = basis_branch.bzrdir
462
else:
463
basis = None
464
# get revision
465
if len(args) > 1:
466
revision_id = args[1]
467
else:
468
revision_id = kwargs.get('revision', None)
469
# get location
470
if len(args):
471
url = args[0]
472
else:
473
# no default to raise if not provided.
474
url = kwargs.get('to_location')
475
return self.bzrdir.clone(url,
476
revision_id=revision_id,
477
basis=basis).open_branch()
478
# new cleaner api.
479
# generate args by hand
480
if len(args) > 1:
481
revision_id = args[1]
482
else:
483
revision_id = kwargs.get('revision_id', None)
484
if len(args):
485
to_bzrdir = args[0]
486
else:
487
# no default to raise if not provided.
488
to_bzrdir = kwargs.get('to_bzrdir')
489
result = self._format.initialize(to_bzrdir)
490
self.copy_content_into(result, revision_id=revision_id)
491
return result
492
493
@needs_read_lock
494
def sprout(self, to_bzrdir, revision_id=None):
495
"""Create a new line of development from the branch, into to_bzrdir.
496
497
revision_id: if not None, the revision history in the new branch will
498
be truncated to end with revision_id.
499
"""
500
result = self._format.initialize(to_bzrdir)
501
self.copy_content_into(result, revision_id=revision_id)
502
result.set_parent(self.bzrdir.root_transport.base)
503
return result
504
505
@needs_read_lock
506
def copy_content_into(self, destination, revision_id=None):
507
"""Copy the content of self into destination.
508
509
revision_id: if not None, the revision history in the new branch will
510
be truncated to end with revision_id.
511
"""
512
new_history = self.revision_history()
513
if revision_id is not None:
869
514
try:
870
os.rename(self.abspath(f), self.abspath(dest_path))
871
except OSError, e:
872
bailout("failed to rename %r to %r: %s" % (f, dest_path, e[1]),
873
["rename rolled back"])
874
875
self._write_inventory(inv)
876
877
878
879
def show_status(self, show_all=False):
880
"""Display single-line status for non-ignored working files.
881
882
The list is show sorted in order by file name.
883
884
>>> b = ScratchBranch(files=['foo', 'foo~'])
885
>>> b.show_status()
886
? foo
887
>>> b.add('foo')
888
>>> b.show_status()
889
A foo
890
>>> b.commit("add foo")
891
>>> b.show_status()
892
>>> os.unlink(b.abspath('foo'))
893
>>> b.show_status()
894
D foo
895
896
TODO: Get state for single files.
897
"""
898
899
# We have to build everything into a list first so that it can
900
# sorted by name, incorporating all the different sources.
901
902
# FIXME: Rather than getting things in random order and then sorting,
903
# just step through in order.
904
905
# Interesting case: the old ID for a file has been removed,
906
# but a new file has been created under that name.
907
908
old = self.basis_tree()
909
new = self.working_tree()
910
911
for fs, fid, oldname, newname, kind in diff_trees(old, new):
912
if fs == 'R':
913
show_status(fs, kind,
914
oldname + ' => ' + newname)
915
elif fs == 'A' or fs == 'M':
916
show_status(fs, kind, newname)
917
elif fs == 'D':
918
show_status(fs, kind, oldname)
919
elif fs == '.':
920
if show_all:
921
show_status(fs, kind, newname)
922
elif fs == 'I':
923
if show_all:
924
show_status(fs, kind, newname)
925
elif fs == '?':
926
show_status(fs, kind, newname)
927
else:
928
bailout("weird file state %r" % ((fs, fid),))
929
930
931
932
class ScratchBranch(Branch):
933
"""Special test class: a branch that cleans up after itself.
934
935
>>> b = ScratchBranch()
936
>>> isdir(b.base)
937
True
938
>>> bd = b.base
939
>>> del b
940
>>> isdir(bd)
941
False
942
"""
943
def __init__(self, files=[], dirs=[]):
944
"""Make a test branch.
945
946
This creates a temporary directory and runs init-tree in it.
947
948
If any files are listed, they are created in the working copy.
949
"""
950
Branch.__init__(self, tempfile.mkdtemp(), init=True)
951
for d in dirs:
952
os.mkdir(self.abspath(d))
953
954
for f in files:
955
file(os.path.join(self.base, f), 'w').write('content of %s' % f)
956
515
new_history = new_history[:new_history.index(revision_id) + 1]
516
except ValueError:
517
rev = self.repository.get_revision(revision_id)
518
new_history = rev.get_history(self.repository)[1:]
519
destination.set_revision_history(new_history)
520
parent = self.get_parent()
521
if parent:
522
destination.set_parent(parent)
523
524
525
class BranchFormat(object):
526
"""An encapsulation of the initialization and open routines for a format.
527
528
Formats provide three things:
529
* An initialization routine,
530
* a format string,
531
* an open routine.
532
533
Formats are placed in an dict by their format string for reference
534
during branch opening. Its not required that these be instances, they
535
can be classes themselves with class methods - it simply depends on
536
whether state is needed for a given format or not.
537
538
Once a format is deprecated, just deprecate the initialize and open
539
methods on the format class. Do not deprecate the object, as the
540
object will be created every time regardless.
541
"""
542
543
_default_format = None
544
"""The default format used for new branches."""
545
546
_formats = {}
547
"""The known formats."""
548
549
@classmethod
550
def find_format(klass, a_bzrdir):
551
"""Return the format for the branch object in a_bzrdir."""
552
try:
553
transport = a_bzrdir.get_branch_transport(None)
554
format_string = transport.get("format").read()
555
return klass._formats[format_string]
556
except NoSuchFile:
557
raise NotBranchError(path=transport.base)
558
except KeyError:
559
raise errors.UnknownFormatError(format_string)
560
561
@classmethod
562
def get_default_format(klass):
563
"""Return the current default format."""
564
return klass._default_format
565
566
def get_format_string(self):
567
"""Return the ASCII format string that identifies this format."""
568
raise NotImplementedError(self.get_format_string)
569
570
def initialize(self, a_bzrdir):
571
"""Create a branch of this format in a_bzrdir."""
572
raise NotImplementedError(self.initialized)
573
574
def is_supported(self):
575
"""Is this format supported?
576
577
Supported formats can be initialized and opened.
578
Unsupported formats may not support initialization or committing or
579
some other features depending on the reason for not being supported.
580
"""
581
return True
582
583
def open(self, a_bzrdir, _found=False):
584
"""Return the branch object for a_bzrdir
585
586
_found is a private parameter, do not use it. It is used to indicate
587
if format probing has already be done.
588
"""
589
raise NotImplementedError(self.open)
590
591
@classmethod
592
def register_format(klass, format):
593
klass._formats[format.get_format_string()] = format
594
595
@classmethod
596
def set_default_format(klass, format):
597
klass._default_format = format
598
599
@classmethod
600
def unregister_format(klass, format):
601
assert klass._formats[format.get_format_string()] is format
602
del klass._formats[format.get_format_string()]
603
604
605
class BzrBranchFormat4(BranchFormat):
606
"""Bzr branch format 4.
607
608
This format has:
609
- a revision-history file.
610
- a branch-lock lock file [ to be shared with the bzrdir ]
611
"""
612
613
def initialize(self, a_bzrdir):
614
"""Create a branch of this format in a_bzrdir."""
615
mutter('creating branch in %s', a_bzrdir.transport.base)
616
branch_transport = a_bzrdir.get_branch_transport(self)
617
utf8_files = [('revision-history', ''),
618
('branch-name', ''),
619
]
620
control_files = LockableFiles(branch_transport, 'branch-lock',
621
TransportLock)
622
control_files.create_lock()
623
control_files.lock_write()
624
try:
625
for file, content in utf8_files:
626
control_files.put_utf8(file, content)
627
finally:
628
control_files.unlock()
629
return self.open(a_bzrdir, _found=True)
630
631
def __init__(self):
632
super(BzrBranchFormat4, self).__init__()
633
self._matchingbzrdir = bzrdir.BzrDirFormat6()
634
635
def open(self, a_bzrdir, _found=False):
636
"""Return the branch object for a_bzrdir
637
638
_found is a private parameter, do not use it. It is used to indicate
639
if format probing has already be done.
640
"""
641
if not _found:
642
# we are being called directly and must probe.
643
raise NotImplementedError
644
return BzrBranch(_format=self,
645
_control_files=a_bzrdir._control_files,
646
a_bzrdir=a_bzrdir,
647
_repository=a_bzrdir.open_repository())
648
649
650
class BzrBranchFormat5(BranchFormat):
651
"""Bzr branch format 5.
652
653
This format has:
654
- a revision-history file.
655
- a format string
656
- a lock dir guarding the branch itself
657
- all of this stored in a branch/ subdirectory
658
- works with shared repositories.
659
660
This format is new in bzr 0.8.
661
"""
662
663
def get_format_string(self):
664
"""See BranchFormat.get_format_string()."""
665
return "Bazaar-NG branch format 5\n"
666
667
def initialize(self, a_bzrdir):
668
"""Create a branch of this format in a_bzrdir."""
669
mutter('creating branch %r in %s', self, a_bzrdir.transport.base)
670
branch_transport = a_bzrdir.get_branch_transport(self)
671
utf8_files = [('revision-history', ''),
672
('branch-name', ''),
673
]
674
control_files = LockableFiles(branch_transport, 'lock', LockDir)
675
control_files.create_lock()
676
control_files.lock_write()
677
control_files.put_utf8('format', self.get_format_string())
678
try:
679
for file, content in utf8_files:
680
control_files.put_utf8(file, content)
681
finally:
682
control_files.unlock()
683
return self.open(a_bzrdir, _found=True, )
684
685
def __init__(self):
686
super(BzrBranchFormat5, self).__init__()
687
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
688
689
def open(self, a_bzrdir, _found=False):
690
"""Return the branch object for a_bzrdir
691
692
_found is a private parameter, do not use it. It is used to indicate
693
if format probing has already be done.
694
"""
695
if not _found:
696
format = BranchFormat.find_format(a_bzrdir)
697
assert format.__class__ == self.__class__
698
transport = a_bzrdir.get_branch_transport(None)
699
control_files = LockableFiles(transport, 'lock', LockDir)
700
return BzrBranch5(_format=self,
701
_control_files=control_files,
702
a_bzrdir=a_bzrdir,
703
_repository=a_bzrdir.find_repository())
704
705
def __str__(self):
706
return "Bazaar-NG Metadir branch format 5"
707
708
709
class BranchReferenceFormat(BranchFormat):
710
"""Bzr branch reference format.
711
712
Branch references are used in implementing checkouts, they
713
act as an alias to the real branch which is at some other url.
714
715
This format has:
716
- A location file
717
- a format string
718
"""
719
720
def get_format_string(self):
721
"""See BranchFormat.get_format_string()."""
722
return "Bazaar-NG Branch Reference Format 1\n"
723
724
def initialize(self, a_bzrdir, target_branch=None):
725
"""Create a branch of this format in a_bzrdir."""
726
if target_branch is None:
727
# this format does not implement branch itself, thus the implicit
728
# creation contract must see it as uninitializable
729
raise errors.UninitializableFormat(self)
730
mutter('creating branch reference in %s', a_bzrdir.transport.base)
731
branch_transport = a_bzrdir.get_branch_transport(self)
732
# FIXME rbc 20060209 one j-a-ms encoding branch lands this str() cast is not needed.
733
branch_transport.put('location', StringIO(str(target_branch.bzrdir.root_transport.base)))
734
branch_transport.put('format', StringIO(self.get_format_string()))
735
return self.open(a_bzrdir, _found=True)
736
737
def __init__(self):
738
super(BranchReferenceFormat, self).__init__()
739
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
740
741
def _make_reference_clone_function(format, a_branch):
742
"""Create a clone() routine for a branch dynamically."""
743
def clone(to_bzrdir, revision_id=None):
744
"""See Branch.clone()."""
745
return format.initialize(to_bzrdir, a_branch)
746
# cannot obey revision_id limits when cloning a reference ...
747
# FIXME RBC 20060210 either nuke revision_id for clone, or
748
# emit some sort of warning/error to the caller ?!
749
return clone
750
751
def open(self, a_bzrdir, _found=False):
752
"""Return the branch that the branch reference in a_bzrdir points at.
753
754
_found is a private parameter, do not use it. It is used to indicate
755
if format probing has already be done.
756
"""
757
if not _found:
758
format = BranchFormat.find_format(a_bzrdir)
759
assert format.__class__ == self.__class__
760
transport = a_bzrdir.get_branch_transport(None)
761
real_bzrdir = bzrdir.BzrDir.open(transport.get('location').read())
762
result = real_bzrdir.open_branch()
763
# this changes the behaviour of result.clone to create a new reference
764
# rather than a copy of the content of the branch.
765
# I did not use a proxy object because that needs much more extensive
766
# testing, and we are only changing one behaviour at the moment.
767
# If we decide to alter more behaviours - i.e. the implicit nickname
768
# then this should be refactored to introduce a tested proxy branch
769
# and a subclass of that for use in overriding clone() and ....
770
# - RBC 20060210
771
result.clone = self._make_reference_clone_function(result)
772
return result
773
774
775
# formats which have no format string are not discoverable
776
# and not independently creatable, so are not registered.
777
__default_format = BzrBranchFormat5()
778
BranchFormat.register_format(__default_format)
779
BranchFormat.register_format(BranchReferenceFormat())
780
BranchFormat.set_default_format(__default_format)
781
_legacy_formats = [BzrBranchFormat4(),
782
]
783
784
class BzrBranch(Branch):
785
"""A branch stored in the actual filesystem.
786
787
Note that it's "local" in the context of the filesystem; it doesn't
788
really matter if it's on an nfs/smb/afs/coda/... share, as long as
789
it's writable, and can be accessed via the normal filesystem API.
790
"""
791
792
def __init__(self, transport=DEPRECATED_PARAMETER, init=DEPRECATED_PARAMETER,
793
relax_version_check=DEPRECATED_PARAMETER, _format=None,
794
_control_files=None, a_bzrdir=None, _repository=None):
795
"""Create new branch object at a particular location.
796
797
transport -- A Transport object, defining how to access files.
798
799
init -- If True, create new control files in a previously
800
unversioned directory. If False, the branch must already
801
be versioned.
802
803
relax_version_check -- If true, the usual check for the branch
804
version is not applied. This is intended only for
805
upgrade/recovery type use; it's not guaranteed that
806
all operations will work on old format branches.
807
"""
808
if a_bzrdir is None:
809
self.bzrdir = bzrdir.BzrDir.open(transport.base)
810
else:
811
self.bzrdir = a_bzrdir
812
self._transport = self.bzrdir.transport.clone('..')
813
self._base = self._transport.base
814
self._format = _format
815
if _control_files is None:
816
raise BzrBadParameterMissing('_control_files')
817
self.control_files = _control_files
818
if deprecated_passed(init):
819
warn("BzrBranch.__init__(..., init=XXX): The init parameter is "
820
"deprecated as of bzr 0.8. Please use Branch.create().",
821
DeprecationWarning,
822
stacklevel=2)
823
if init:
824
# this is slower than before deprecation, oh well never mind.
825
# -> its deprecated.
826
self._initialize(transport.base)
827
self._check_format(_format)
828
if deprecated_passed(relax_version_check):
829
warn("BzrBranch.__init__(..., relax_version_check=XXX_: The "
830
"relax_version_check parameter is deprecated as of bzr 0.8. "
831
"Please use BzrDir.open_downlevel, or a BzrBranchFormat's "
832
"open() method.",
833
DeprecationWarning,
834
stacklevel=2)
835
if (not relax_version_check
836
and not self._format.is_supported()):
837
raise errors.UnsupportedFormatError(
838
'sorry, branch format %r not supported' % fmt,
839
['use a different bzr version',
840
'or remove the .bzr directory'
841
' and "bzr init" again'])
842
if deprecated_passed(transport):
843
warn("BzrBranch.__init__(transport=XXX...): The transport "
844
"parameter is deprecated as of bzr 0.8. "
845
"Please use Branch.open, or bzrdir.open_branch().",
846
DeprecationWarning,
847
stacklevel=2)
848
self.repository = _repository
849
850
def __str__(self):
851
return '%s(%r)' % (self.__class__.__name__, self.base)
852
853
__repr__ = __str__
957
854
958
855
def __del__(self):
959
"""Destroy the test branch, removing the scratch directory."""
960
try:
961
shutil.rmtree(self.base)
962
except OSError:
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):
966
for name in files:
967
os.chmod(os.path.join(root, name), 0700)
968
shutil.rmtree(self.base)
969
856
# TODO: It might be best to do this somewhere else,
857
# but it is nice for a Branch object to automatically
858
# cache it's information.
859
# Alternatively, we could have the Transport objects cache requests
860
# See the earlier discussion about how major objects (like Branch)
861
# should never expect their __del__ function to run.
862
# XXX: cache_root seems to be unused, 2006-01-13 mbp
863
if hasattr(self, 'cache_root') and self.cache_root is not None:
864
try:
865
shutil.rmtree(self.cache_root)
866
except:
867
pass
868
self.cache_root = None
869
870
def _get_base(self):
871
return self._base
872
873
base = property(_get_base, doc="The URL for the root of this branch.")
874
875
def _finish_transaction(self):
876
"""Exit the current transaction."""
877
return self.control_files._finish_transaction()
878
879
def get_transaction(self):
880
"""Return the current active transaction.
881
882
If no transaction is active, this returns a passthrough object
883
for which all data is immediately flushed and no caching happens.
884
"""
885
# this is an explicit function so that we can do tricky stuff
886
# when the storage in rev_storage is elsewhere.
887
# we probably need to hook the two 'lock a location' and
888
# 'have a transaction' together more delicately, so that
889
# we can have two locks (branch and storage) and one transaction
890
# ... and finishing the transaction unlocks both, but unlocking
891
# does not. - RBC 20051121
892
return self.control_files.get_transaction()
893
894
def _set_transaction(self, transaction):
895
"""Set a new active transaction."""
896
return self.control_files._set_transaction(transaction)
897
898
def abspath(self, name):
899
"""See Branch.abspath."""
900
return self.control_files._transport.abspath(name)
901
902
def _check_format(self, format):
903
"""Identify the branch format if needed.
904
905
The format is stored as a reference to the format object in
906
self._format for code that needs to check it later.
907
908
The format parameter is either None or the branch format class
909
used to open this branch.
910
911
FIXME: DELETE THIS METHOD when pre 0.8 support is removed.
912
"""
913
if format is None:
914
format = BzrBranchFormat.find_format(self.bzrdir)
915
self._format = format
916
mutter("got branch format %s", self._format)
917
918
@needs_read_lock
919
def get_root_id(self):
920
"""See Branch.get_root_id."""
921
tree = self.repository.revision_tree(self.last_revision())
922
return tree.inventory.root.file_id
923
924
def lock_write(self):
925
# TODO: test for failed two phase locks. This is known broken.
926
self.control_files.lock_write()
927
self.repository.lock_write()
928
929
def lock_read(self):
930
# TODO: test for failed two phase locks. This is known broken.
931
self.control_files.lock_read()
932
self.repository.lock_read()
933
934
def unlock(self):
935
# TODO: test for failed two phase locks. This is known broken.
936
self.repository.unlock()
937
self.control_files.unlock()
938
939
def peek_lock_mode(self):
940
if self.control_files._lock_count == 0:
941
return None
942
else:
943
return self.control_files._lock_mode
944
945
@needs_read_lock
946
def print_file(self, file, revision_id):
947
"""See Branch.print_file."""
948
return self.repository.print_file(file, revision_id)
949
950
@needs_write_lock
951
def append_revision(self, *revision_ids):
952
"""See Branch.append_revision."""
953
for revision_id in revision_ids:
954
mutter("add {%s} to revision-history" % revision_id)
955
rev_history = self.revision_history()
956
rev_history.extend(revision_ids)
957
self.set_revision_history(rev_history)
958
959
@needs_write_lock
960
def set_revision_history(self, rev_history):
961
"""See Branch.set_revision_history."""
962
self.control_files.put_utf8(
963
'revision-history', '\n'.join(rev_history))
964
transaction = self.get_transaction()
965
history = transaction.map.find_revision_history()
966
if history is not None:
967
# update the revision history in the identity map.
968
history[:] = list(rev_history)
969
# this call is disabled because revision_history is
970
# not really an object yet, and the transaction is for objects.
971
# transaction.register_dirty(history)
972
else:
973
transaction.map.add_revision_history(rev_history)
974
# this call is disabled because revision_history is
975
# not really an object yet, and the transaction is for objects.
976
# transaction.register_clean(history)
977
978
def get_revision_delta(self, revno):
979
"""Return the delta for one revision.
980
981
The delta is relative to its mainline predecessor, or the
982
empty tree for revision 1.
983
"""
984
assert isinstance(revno, int)
985
rh = self.revision_history()
986
if not (1 <= revno <= len(rh)):
987
raise InvalidRevisionNumber(revno)
988
989
# revno is 1-based; list is 0-based
990
991
new_tree = self.repository.revision_tree(rh[revno-1])
992
if revno == 1:
993
old_tree = EmptyTree()
994
else:
995
old_tree = self.repository.revision_tree(rh[revno-2])
996
return compare_trees(old_tree, new_tree)
997
998
@needs_read_lock
999
def revision_history(self):
1000
"""See Branch.revision_history."""
1001
transaction = self.get_transaction()
1002
history = transaction.map.find_revision_history()
1003
if history is not None:
1004
mutter("cache hit for revision-history in %s", self)
1005
return list(history)
1006
history = [l.rstrip('\r\n') for l in
1007
self.control_files.get_utf8('revision-history').readlines()]
1008
transaction.map.add_revision_history(history)
1009
# this call is disabled because revision_history is
1010
# not really an object yet, and the transaction is for objects.
1011
# transaction.register_clean(history, precious=True)
1012
return list(history)
1013
1014
def update_revisions(self, other, stop_revision=None):
1015
"""See Branch.update_revisions."""
1016
if stop_revision is None:
1017
stop_revision = other.last_revision()
1018
### Should this be checking is_ancestor instead of revision_history?
1019
if (stop_revision is not None and
1020
stop_revision in self.revision_history()):
1021
return
1022
self.fetch(other, stop_revision)
1023
pullable_revs = self.pullable_revisions(other, stop_revision)
1024
if len(pullable_revs) > 0:
1025
self.append_revision(*pullable_revs)
1026
1027
def pullable_revisions(self, other, stop_revision):
1028
other_revno = other.revision_id_to_revno(stop_revision)
1029
try:
1030
return self.missing_revisions(other, other_revno)
1031
except DivergedBranches, e:
1032
try:
1033
pullable_revs = get_intervening_revisions(self.last_revision(),
1034
stop_revision,
1035
self.repository)
1036
assert self.last_revision() not in pullable_revs
1037
return pullable_revs
1038
except bzrlib.errors.NotAncestor:
1039
if is_ancestor(self.last_revision(), stop_revision, self):
1040
return []
1041
else:
1042
raise e
1043
1044
def basis_tree(self):
1045
"""See Branch.basis_tree."""
1046
return self.repository.revision_tree(self.last_revision())
1047
1048
@deprecated_method(zero_eight)
1049
def working_tree(self):
1050
"""Create a Working tree object for this branch."""
1051
from bzrlib.workingtree import WorkingTree
1052
from bzrlib.transport.local import LocalTransport
1053
if (self.base.find('://') != -1 or
1054
not isinstance(self._transport, LocalTransport)):
1055
raise NoWorkingTree(self.base)
1056
return self.bzrdir.open_workingtree()
1057
1058
@needs_write_lock
1059
def pull(self, source, overwrite=False, stop_revision=None):
1060
"""See Branch.pull."""
1061
source.lock_read()
1062
try:
1063
old_count = len(self.revision_history())
1064
try:
1065
self.update_revisions(source,stop_revision)
1066
except DivergedBranches:
1067
if not overwrite:
1068
raise
1069
if overwrite:
1070
self.set_revision_history(source.revision_history())
1071
new_count = len(self.revision_history())
1072
return new_count - old_count
1073
finally:
1074
source.unlock()
1075
1076
def get_parent(self):
1077
"""See Branch.get_parent."""
1078
import errno
1079
_locs = ['parent', 'pull', 'x-pull']
1080
for l in _locs:
1081
try:
1082
return self.control_files.get_utf8(l).read().strip('\n')
1083
except NoSuchFile:
1084
pass
1085
return None
1086
1087
def get_push_location(self):
1088
"""See Branch.get_push_location."""
1089
config = bzrlib.config.BranchConfig(self)
1090
push_loc = config.get_user_option('push_location')
1091
return push_loc
1092
1093
def set_push_location(self, location):
1094
"""See Branch.set_push_location."""
1095
config = bzrlib.config.LocationConfig(self.base)
1096
config.set_user_option('push_location', location)
1097
1098
@needs_write_lock
1099
def set_parent(self, url):
1100
"""See Branch.set_parent."""
1101
# TODO: Maybe delete old location files?
1102
# URLs should never be unicode, even on the local fs,
1103
# FIXUP this and get_parent in a future branch format bump:
1104
# read and rewrite the file, and have the new format code read
1105
# using .get not .get_utf8. RBC 20060125
1106
self.control_files.put_utf8('parent', url + '\n')
1107
1108
def tree_config(self):
1109
return TreeConfig(self)
1110
1111
1112
class BzrBranch5(BzrBranch):
1113
"""A format 5 branch. This supports new features over plan branches.
1114
1115
It has support for a master_branch which is the data for bound branches.
1116
"""
1117
1118
def __init__(self,
1119
_format,
1120
_control_files,
1121
a_bzrdir,
1122
_repository):
1123
super(BzrBranch5, self).__init__(_format=_format,
1124
_control_files=_control_files,
1125
a_bzrdir=a_bzrdir,
1126
_repository=_repository)
1127
1128
@needs_write_lock
1129
def pull(self, source, overwrite=False, stop_revision=None):
1130
"""Updates branch.pull to be bound branch aware."""
1131
bound_location = self.get_bound_location()
1132
if source.base != bound_location:
1133
# not pulling from master, so we need to update master.
1134
master_branch = self.get_master_branch()
1135
if master_branch:
1136
master_branch.pull(source)
1137
source = master_branch
1138
return super(BzrBranch5, self).pull(source, overwrite, stop_revision)
1139
1140
def get_bound_location(self):
1141
try:
1142
return self.control_files.get_utf8('bound').read()[:-1]
1143
except errors.NoSuchFile:
1144
return None
1145
1146
@needs_read_lock
1147
def get_master_branch(self):
1148
"""Return the branch we are bound to.
1149
1150
:return: Either a Branch, or None
1151
1152
This could memoise the branch, but if thats done
1153
it must be revalidated on each new lock.
1154
So for now we just dont memoise it.
1155
# RBC 20060304 review this decision.
1156
"""
1157
bound_loc = self.get_bound_location()
1158
if not bound_loc:
1159
return None
1160
try:
1161
return Branch.open(bound_loc)
1162
except (errors.NotBranchError, errors.ConnectionError), e:
1163
raise errors.BoundBranchConnectionFailure(
1164
self, bound_loc, e)
1165
1166
@needs_write_lock
1167
def set_bound_location(self, location):
1168
"""Set the target where this branch is bound to.
1169
1170
:param location: URL to the target branch
1171
"""
1172
if location:
1173
self.control_files.put_utf8('bound', location+'\n')
1174
else:
1175
try:
1176
self.control_files._transport.delete('bound')
1177
except NoSuchFile:
1178
return False
1179
return True
1180
1181
@needs_write_lock
1182
def bind(self, other):
1183
"""Bind the local branch the other branch.
1184
1185
:param other: The branch to bind to
1186
:type other: Branch
1187
"""
1188
# TODO: jam 20051230 Consider checking if the target is bound
1189
# It is debatable whether you should be able to bind to
1190
# a branch which is itself bound.
1191
# Committing is obviously forbidden,
1192
# but binding itself may not be.
1193
# Since we *have* to check at commit time, we don't
1194
# *need* to check here
1195
self.pull(other)
1196
1197
# we are now equal to or a suffix of other.
1198
1199
# Since we have 'pulled' from the remote location,
1200
# now we should try to pull in the opposite direction
1201
# in case the local tree has more revisions than the
1202
# remote one.
1203
# There may be a different check you could do here
1204
# rather than actually trying to install revisions remotely.
1205
# TODO: capture an exception which indicates the remote branch
1206
# is not writeable.
1207
# If it is up-to-date, this probably should not be a failure
1208
1209
# lock other for write so the revision-history syncing cannot race
1210
other.lock_write()
1211
try:
1212
other.pull(self)
1213
# if this does not error, other now has the same last rev we do
1214
# it can only error if the pull from other was concurrent with
1215
# a commit to other from someone else.
1216
1217
# until we ditch revision-history, we need to sync them up:
1218
self.set_revision_history(other.revision_history())
1219
# now other and self are up to date with each other and have the
1220
# same revision-history.
1221
finally:
1222
other.unlock()
1223
1224
self.set_bound_location(other.base)
1225
1226
@needs_write_lock
1227
def unbind(self):
1228
"""If bound, unbind"""
1229
return self.set_bound_location(None)
1230
1231
@needs_write_lock
1232
def update(self):
1233
"""Synchronise this branch with the master branch if any.
1234
1235
:return: None or the last_revision that was pivoted out during the
1236
update.
1237
"""
1238
master = self.get_master_branch()
1239
if master is not None:
1240
old_tip = self.last_revision()
1241
self.pull(master, overwrite=True)
1242
if old_tip in self.repository.get_ancestry(self.last_revision()):
1243
return None
1244
return old_tip
1245
return None
1246
1247
1248
class BranchTestProviderAdapter(object):
1249
"""A tool to generate a suite testing multiple branch formats at once.
1250
1251
This is done by copying the test once for each transport and injecting
1252
the transport_server, transport_readonly_server, and branch_format
1253
classes into each copy. Each copy is also given a new id() to make it
1254
easy to identify.
1255
"""
1256
1257
def __init__(self, transport_server, transport_readonly_server, formats):
1258
self._transport_server = transport_server
1259
self._transport_readonly_server = transport_readonly_server
1260
self._formats = formats
970
1261
1262
def adapt(self, test):
1263
result = TestSuite()
1264
for branch_format, bzrdir_format in self._formats:
1265
new_test = deepcopy(test)
1266
new_test.transport_server = self._transport_server
1267
new_test.transport_readonly_server = self._transport_readonly_server
1268
new_test.bzrdir_format = bzrdir_format
1269
new_test.branch_format = branch_format
1270
def make_new_test_id():
1271
new_id = "%s(%s)" % (new_test.id(), branch_format.__class__.__name__)
1272
return lambda: new_id
1273
new_test.id = make_new_test_id()
1274
result.addTest(new_test)
1275
return result
1276
971
1277
972
1278
######################################################################
973
1279
# predicates
974
1280
975
1281
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:
983
return True
984
if filename == head:
985
break
986
filename = head
987
return False
988
989
990
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))
995
return s
996
997
998
def gen_file_id(name):
999
"""Return new file id.
1000
1001
This should probably generate proper UUIDs, but for the moment we
1002
cope with just randomness because running uuidgen every time is
1003
slow."""
1004
idx = name.rfind('/')
1005
if idx != -1:
1006
name = name[idx+1 : ]
1007
idx = name.rfind('\\')
1008
if idx != -1:
1009
name = name[idx+1 : ]
1010
1011
name = name.lstrip('.')
1012
1013
s = hexlify(rand_bytes(8))
1014
return '-'.join((name, compact_date(time.time()), s))
1282
@deprecated_function(zero_eight)
1283
def ScratchBranch(*args, **kwargs):
1284
"""See bzrlib.bzrdir.ScratchDir."""
1285
d = ScratchDir(*args, **kwargs)
1286
return d.open_branch()
1287
1288
1289
@deprecated_function(zero_eight)
1290
def is_control_file(*args, **kwargs):
1291
"""See bzrlib.workingtree.is_control_file."""
1292
return bzrlib.workingtree.is_control_file(*args, **kwargs)
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