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- Committer: John Arbash Meinel
- Date: 2006-09-12 21:56:31 UTC
- mfrom: (1960.4.3 0.10)
- mto: This revision was merged to the branch mainline in revision 2002.
- Revision ID: john@arbash-meinel.com-20060912215631-b827909408542a9b
merge bzr-0.10 into bzr.dev
- files added:
- BRANCH.TODO
- bzrlib/benchmarks
- bzrlib/benchmarks/tree_creator
- bzrlib/bundle
- bzrlib/bundle/old
- bzrlib/bundle/serializer
- bzrlib/doc
- bzrlib/doc/api
- bzrlib/export
- bzrlib/plugins/launchpad
- bzrlib/store
- bzrlib/store/revision
- bzrlib/store/versioned
- bzrlib/tests/blackbox
- bzrlib/tests/branch_implementations
- bzrlib/tests/bzrdir_implementations
- bzrlib/tests/interrepository_implementations
- bzrlib/tests/intertree_implementations
- bzrlib/tests/interversionedfile_implementations
- bzrlib/tests/repository_implementations
- bzrlib/tests/revisionstore_implementations
- bzrlib/tests/test_patches_data
- bzrlib/tests/tree_implementations
- bzrlib/tests/workingtree_implementations
- bzrlib/transport
- bzrlib/transport/http
- bzrlib/ui
- bzrlib/util
- bzrlib/util/configobj
- bzrlib/util/configobj/docs
- tools/doc_generate
- tools/win32
- files removed:
- bzrlib/mdiff.py
- notes
- patches
- plugins/changeset
- urlgrabber
- files renamed:
- bzrlib/changeset.py => bzrlib/bundle/__init__.py
- plugins/ => bzrlib/plugins/
- bzrlib/store.py => bzrlib/store/__init__.py
- bzrlib/selftest/ => bzrlib/tests/
- bzrlib/selftest/teststatus.py => bzrlib/tests/blackbox/test_status.py
- bzrlib/selftest/blackbox.py => bzrlib/tests/blackbox/test_too_much.py
- bzrlib/selftest/versioning.py => bzrlib/tests/blackbox/test_versioning.py
- bzrlib/selftest/testbranch.py => bzrlib/tests/branch_implementations/test_branch.py
- bzrlib/selftest/testdiff.py => bzrlib/tests/test_diff.py
- bzrlib/selftest/testhashcache.py => bzrlib/tests/test_hashcache.py
- bzrlib/selftest/testinv.py => bzrlib/tests/test_inv.py
- bzrlib/selftest/testlog.py => bzrlib/tests/test_log.py
- bzrlib/selftest/testmerge3.py => bzrlib/tests/test_merge3.py
- bzrlib/selftest/plugins.py => bzrlib/tests/test_plugins.py
- bzrlib/selftest/testrevision.py => bzrlib/tests/test_revision.py
- bzrlib/selftest/testrevisionnamespaces.py => bzrlib/tests/test_revisionnamespaces.py
- tools/testweave.py => bzrlib/tests/test_weave.py
- bzrlib/selftest/whitebox.py => bzrlib/tests/test_whitebox.py
- effbot/ => bzrlib/util/effbot/
- elementtree/ => bzrlib/util/elementtree/
- bzrlib/xml.py => bzrlib/xml_serializer.py
- bzrlib/newinventory.py => contrib/newinventory.py
- tutorial.txt => doc/tutorial.txt
- bzr-man.py => tools/doc_generate/autodoc_man.py
- files modified:
- .bzrignore
- bzr *
added
removed
bzrlib/branch.py
1
# Copyright (C) 2005 Canonical Ltd
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1
# 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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import sys
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import os
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from copy import deepcopy
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from cStringIO import StringIO
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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 bzrlib import (
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bzrdir,
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cache_utf8,
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errors,
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lockdir,
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osutils,
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revision,
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transport,
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tree,
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ui,
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urlutils,
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)
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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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import bzrlib.errors as errors
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from bzrlib.errors import (BzrError, BzrCheckError, DivergedBranches,
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HistoryMissing, InvalidRevisionId,
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InvalidRevisionNumber, LockError, NoSuchFile,
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NoSuchRevision, NoWorkingTree, NotVersionedError,
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NotBranchError, UninitializableFormat,
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UnlistableStore, UnlistableBranch,
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)
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from bzrlib.lockable_files import LockableFiles, TransportLock
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from bzrlib.symbol_versioning import (deprecated_function,
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deprecated_method,
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DEPRECATED_PARAMETER,
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deprecated_passed,
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zero_eight, zero_nine,
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)
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from bzrlib.trace import mutter, note
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from bzrlib.osutils import isdir, quotefn, compact_date, rand_bytes, \
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splitpath, \
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sha_file, appendpath, file_kind
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from bzrlib.errors import BzrError, InvalidRevisionNumber, InvalidRevisionId
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import bzrlib.errors
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from bzrlib.textui import show_status
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from bzrlib.revision import Revision
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from bzrlib.xml import unpack_xml
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from bzrlib.delta import compare_trees
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from bzrlib.tree import EmptyTree, RevisionTree
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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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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.
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def find_branch(f, **args):
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if f and (f.startswith('http://') or f.startswith('https://')):
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import remotebranch
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return remotebranch.RemoteBranch(f, **args)
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else:
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return Branch(f, **args)
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def find_cached_branch(f, cache_root, **args):
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from remotebranch import RemoteBranch
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br = find_branch(f, **args)
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def cacheify(br, store_name):
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from meta_store import CachedStore
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cache_path = os.path.join(cache_root, store_name)
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os.mkdir(cache_path)
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new_store = CachedStore(getattr(br, store_name), cache_path)
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setattr(br, store_name, new_store)
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if isinstance(br, RemoteBranch):
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cacheify(br, 'inventory_store')
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cacheify(br, 'text_store')
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cacheify(br, 'revision_store')
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return br
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def _relpath(base, path):
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"""Return path relative to base, or raise exception.
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The path may be either an absolute path or a path relative to the
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current working directory.
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Lifted out of Branch.relpath for ease of testing.
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os.path.commonprefix (python2.4) has a bad bug that it works just
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on string prefixes, assuming that '/u' is a prefix of '/u2'. This
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avoids that problem."""
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rp = os.path.abspath(path)
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s = []
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head = rp
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while len(head) >= len(base):
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if head == base:
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break
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head, tail = os.path.split(head)
87
if tail:
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s.insert(0, tail)
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else:
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from errors import NotBranchError
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raise NotBranchError("path %r is not within branch %r" % (rp, base))
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return os.sep.join(s)
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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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f may be a filename or a URL.
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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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if not os.path.exists(f):
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raise BzrError('%r does not exist' % 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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class DivergedBranches(Exception):
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def __init__(self, branch1, branch2):
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self.branch1 = branch1
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self.branch2 = branch2
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Exception.__init__(self, "These branches have diverged.")
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# cache in memory to make this faster. In general anything can be
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# cached in memory between lock and unlock operations. .. nb thats
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# what the transaction identity map provides
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######################################################################
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"""Branch holding a history of revisions.
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base
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Base directory of the branch.
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_lock_mode
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None, or 'r' or 'w'
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_lock_count
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If _lock_mode is true, a positive count of the number of times the
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lock has been taken.
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_lock
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Lock object from bzrlib.lock.
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Base directory/url of the branch.
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"""
79
# 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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_lock_mode = None
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_lock_count = None
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_lock = None
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# Map some sort of prefix into a namespace
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# stuff like "revno:10", "revid:", etc.
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# This should match a prefix with a function which accepts
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REVISION_NAMESPACES = {}
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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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from bzrlib.store import ImmutableStore
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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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from errors import NotBranchError
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raise NotBranchError("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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def __del__(self):
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if self._lock_mode or self._lock:
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from warnings import warn
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warn("branch %r was not explicitly unlocked" % self)
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self._lock.unlock()
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def __init__(self, *ignored, **ignored_too):
84
raise NotImplementedError('The Branch class is abstract')
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def break_lock(self):
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"""Break a lock if one is present from another instance.
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Uses the ui factory to ask for confirmation if the lock may be from
90
an active process.
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This will probe the repository for its lock as well.
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"""
94
self.control_files.break_lock()
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self.repository.break_lock()
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master = self.get_master_branch()
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if master is not None:
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master.break_lock()
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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 branch rooted at base.
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For instance, if the branch is at URL/.bzr/branch,
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Branch.open(URL) -> a Branch instance.
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"""
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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
137
through a BzrDir.
138
"""
139
return bzrdir.BzrDir.create_standalone_workingtree(base).branch
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@deprecated_function(zero_eight)
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def setup_caching(self, cache_root):
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"""Subclasses that care about caching should override this, and set
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up cached stores located under cache_root.
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NOTE: This is unused.
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"""
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pass
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def get_config(self):
151
return bzrlib.config.BranchConfig(self)
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def _get_nick(self):
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return self.get_config().get_nickname()
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def _set_nick(self, nick):
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self.get_config().set_user_option('nickname', nick)
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nick = property(_get_nick, _set_nick)
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def is_locked(self):
162
raise NotImplementedError(self.is_locked)
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def lock_write(self):
213
if self._lock_mode:
214
if self._lock_mode != 'w':
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from errors import LockError
216
raise LockError("can't upgrade to a write lock from %r" %
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self._lock_mode)
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self._lock_count += 1
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else:
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from bzrlib.lock import WriteLock
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self._lock = WriteLock(self.controlfilename('branch-lock'))
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self._lock_mode = 'w'
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self._lock_count = 1
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raise NotImplementedError(self.lock_write)
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def lock_read(self):
229
if self._lock_mode:
230
assert self._lock_mode in ('r', 'w'), \
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"invalid lock mode %r" % self._lock_mode
232
self._lock_count += 1
233
else:
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from bzrlib.lock import ReadLock
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self._lock = ReadLock(self.controlfilename('branch-lock'))
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self._lock_mode = 'r'
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self._lock_count = 1
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raise NotImplementedError(self.lock_read)
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def unlock(self):
243
if not self._lock_mode:
244
from errors import LockError
245
raise LockError('branch %r is not locked' % (self))
246
247
if self._lock_count > 1:
248
self._lock_count -= 1
249
else:
250
self._lock.unlock()
251
self._lock = None
252
self._lock_mode = self._lock_count = None
253
171
raise NotImplementedError(self.unlock)
172
173
def peek_lock_mode(self):
174
"""Return lock mode for the Branch: 'r', 'w' or None"""
175
raise NotImplementedError(self.peek_lock_mode)
176
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def get_physical_lock_status(self):
178
raise NotImplementedError(self.get_physical_lock_status)
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def abspath(self, name):
256
"""Return absolute filename for something in the branch"""
257
return os.path.join(self.base, name)
258
259
260
def relpath(self, path):
261
"""Return path relative to this branch of something inside it.
262
263
Raises an error if path is not in this branch."""
264
return _relpath(self.base, path)
265
266
267
def controlfilename(self, file_or_path):
268
"""Return location relative to branch."""
269
if isinstance(file_or_path, basestring):
270
file_or_path = [file_or_path]
271
return os.path.join(self.base, bzrlib.BZRDIR, *file_or_path)
272
273
274
def controlfile(self, file_or_path, mode='r'):
275
"""Open a control file for this branch.
276
277
There are two classes of file in the control directory: text
278
and binary. binary files are untranslated byte streams. Text
279
control files are stored with Unix newlines and in UTF-8, even
280
if the platform or locale defaults are different.
281
282
Controlfiles should almost never be opened in write mode but
283
rather should be atomically copied and replaced using atomicfile.
284
"""
285
286
fn = self.controlfilename(file_or_path)
287
288
if mode == 'rb' or mode == 'wb':
289
return file(fn, mode)
290
elif mode == 'r' or mode == 'w':
291
# open in binary mode anyhow so there's no newline translation;
292
# codecs uses line buffering by default; don't want that.
293
import codecs
294
return codecs.open(fn, mode + 'b', 'utf-8',
295
buffering=60000)
296
else:
297
raise BzrError("invalid controlfile mode %r" % mode)
298
299
300
301
def _make_control(self):
302
from bzrlib.inventory import Inventory
303
from bzrlib.xml import pack_xml
304
305
os.mkdir(self.controlfilename([]))
306
self.controlfile('README', 'w').write(
307
"This is a Bazaar-NG control directory.\n"
308
"Do not change any files in this directory.\n")
309
self.controlfile('branch-format', 'w').write(BZR_BRANCH_FORMAT)
310
for d in ('text-store', 'inventory-store', 'revision-store'):
311
os.mkdir(self.controlfilename(d))
312
for f in ('revision-history', 'merged-patches',
313
'pending-merged-patches', 'branch-name',
314
'branch-lock',
315
'pending-merges'):
316
self.controlfile(f, 'w').write('')
317
mutter('created control directory in ' + self.base)
318
319
pack_xml(Inventory(gen_root_id()), self.controlfile('inventory','w'))
320
321
322
def _check_format(self):
323
"""Check this branch format is supported.
324
325
The current tool only supports the current unstable format.
326
327
In the future, we might need different in-memory Branch
328
classes to support downlevel branches. But not yet.
329
"""
330
# This ignores newlines so that we can open branches created
331
# on Windows from Linux and so on. I think it might be better
332
# to always make all internal files in unix format.
333
fmt = self.controlfile('branch-format', 'r').read()
334
fmt.replace('\r\n', '')
335
if fmt != BZR_BRANCH_FORMAT:
336
raise BzrError('sorry, branch format %r not supported' % fmt,
337
['use a different bzr version',
338
'or remove the .bzr directory and "bzr init" again'])
339
340
def get_root_id(self):
341
"""Return the id of this branches root"""
342
inv = self.read_working_inventory()
343
return inv.root.file_id
344
345
def set_root_id(self, file_id):
346
inv = self.read_working_inventory()
347
orig_root_id = inv.root.file_id
348
del inv._byid[inv.root.file_id]
349
inv.root.file_id = file_id
350
inv._byid[inv.root.file_id] = inv.root
351
for fid in inv:
352
entry = inv[fid]
353
if entry.parent_id in (None, orig_root_id):
354
entry.parent_id = inv.root.file_id
355
self._write_inventory(inv)
356
357
def read_working_inventory(self):
358
"""Read the working inventory."""
359
from bzrlib.inventory import Inventory
360
from bzrlib.xml import unpack_xml
361
from time import time
362
before = time()
363
self.lock_read()
364
try:
365
# ElementTree does its own conversion from UTF-8, so open in
366
# binary.
367
inv = unpack_xml(Inventory,
368
self.controlfile('inventory', 'rb'))
369
mutter("loaded inventory of %d items in %f"
370
% (len(inv), time() - before))
371
return inv
372
finally:
373
self.unlock()
374
375
376
def _write_inventory(self, inv):
377
"""Update the working inventory.
378
379
That is to say, the inventory describing changes underway, that
380
will be committed to the next revision.
381
"""
382
from bzrlib.atomicfile import AtomicFile
383
from bzrlib.xml import pack_xml
384
385
self.lock_write()
386
try:
387
f = AtomicFile(self.controlfilename('inventory'), 'wb')
388
try:
389
pack_xml(inv, f)
390
f.commit()
391
finally:
392
f.close()
393
finally:
394
self.unlock()
395
396
mutter('wrote working inventory')
397
398
399
inventory = property(read_working_inventory, _write_inventory, None,
400
"""Inventory for the working copy.""")
401
402
403
def add(self, files, verbose=False, ids=None):
404
"""Make files versioned.
405
406
Note that the command line normally calls smart_add instead.
407
408
This puts the files in the Added state, so that they will be
409
recorded by the next commit.
410
411
files
412
List of paths to add, relative to the base of the tree.
413
414
ids
415
If set, use these instead of automatically generated ids.
416
Must be the same length as the list of files, but may
417
contain None for ids that are to be autogenerated.
418
419
TODO: Perhaps have an option to add the ids even if the files do
420
not (yet) exist.
421
422
TODO: Perhaps return the ids of the files? But then again it
423
is easy to retrieve them if they're needed.
424
425
TODO: Adding a directory should optionally recurse down and
426
add all non-ignored children. Perhaps do that in a
427
higher-level method.
428
"""
429
# TODO: Re-adding a file that is removed in the working copy
430
# should probably put it back with the previous ID.
431
if isinstance(files, basestring):
432
assert(ids is None or isinstance(ids, basestring))
433
files = [files]
434
if ids is not None:
435
ids = [ids]
436
437
if ids is None:
438
ids = [None] * len(files)
439
else:
440
assert(len(ids) == len(files))
441
442
self.lock_write()
443
try:
444
inv = self.read_working_inventory()
445
for f,file_id in zip(files, ids):
446
if is_control_file(f):
447
raise BzrError("cannot add control file %s" % quotefn(f))
448
449
fp = splitpath(f)
450
451
if len(fp) == 0:
452
raise BzrError("cannot add top-level %r" % f)
453
454
fullpath = os.path.normpath(self.abspath(f))
455
456
try:
457
kind = file_kind(fullpath)
458
except OSError:
459
# maybe something better?
460
raise BzrError('cannot add: not a regular file or directory: %s' % quotefn(f))
461
462
if kind != 'file' and kind != 'directory':
463
raise BzrError('cannot add: not a regular file or directory: %s' % quotefn(f))
464
465
if file_id is None:
466
file_id = gen_file_id(f)
467
inv.add_path(f, kind=kind, file_id=file_id)
468
469
if verbose:
470
print 'added', quotefn(f)
471
472
mutter("add file %s file_id:{%s} kind=%r" % (f, file_id, kind))
473
474
self._write_inventory(inv)
475
finally:
476
self.unlock()
477
478
479
def print_file(self, file, revno):
480
"""Print `file` to stdout."""
481
self.lock_read()
482
try:
483
tree = self.revision_tree(self.lookup_revision(revno))
484
# use inventory as it was in that revision
485
file_id = tree.inventory.path2id(file)
486
if not file_id:
487
raise BzrError("%r is not present in revision %s" % (file, revno))
488
tree.print_file(file_id)
489
finally:
490
self.unlock()
491
492
493
def remove(self, files, verbose=False):
494
"""Mark nominated files for removal from the inventory.
495
496
This does not remove their text. This does not run on
497
498
TODO: Refuse to remove modified files unless --force is given?
499
500
TODO: Do something useful with directories.
501
502
TODO: Should this remove the text or not? Tough call; not
503
removing may be useful and the user can just use use rm, and
504
is the opposite of add. Removing it is consistent with most
505
other tools. Maybe an option.
506
"""
507
## TODO: Normalize names
508
## TODO: Remove nested loops; better scalability
509
if isinstance(files, basestring):
510
files = [files]
511
512
self.lock_write()
513
514
try:
515
tree = self.working_tree()
516
inv = tree.inventory
517
518
# do this before any modifications
519
for f in files:
520
fid = inv.path2id(f)
521
if not fid:
522
raise BzrError("cannot remove unversioned file %s" % quotefn(f))
523
mutter("remove inventory entry %s {%s}" % (quotefn(f), fid))
524
if verbose:
525
# having remove it, it must be either ignored or unknown
526
if tree.is_ignored(f):
527
new_status = 'I'
528
else:
529
new_status = '?'
530
show_status(new_status, inv[fid].kind, quotefn(f))
531
del inv[fid]
532
533
self._write_inventory(inv)
534
finally:
535
self.unlock()
536
537
538
# FIXME: this doesn't need to be a branch method
539
def set_inventory(self, new_inventory_list):
540
from bzrlib.inventory import Inventory, InventoryEntry
541
inv = Inventory(self.get_root_id())
542
for path, file_id, parent, kind in new_inventory_list:
543
name = os.path.basename(path)
544
if name == "":
545
continue
546
inv.add(InventoryEntry(file_id, name, kind, parent))
547
self._write_inventory(inv)
548
549
550
def unknowns(self):
551
"""Return all unknown files.
552
553
These are files in the working directory that are not versioned or
554
control files or ignored.
555
556
>>> b = ScratchBranch(files=['foo', 'foo~'])
557
>>> list(b.unknowns())
558
['foo']
559
>>> b.add('foo')
560
>>> list(b.unknowns())
561
[]
562
>>> b.remove('foo')
563
>>> list(b.unknowns())
564
['foo']
565
"""
566
return self.working_tree().unknowns()
567
568
569
def append_revision(self, *revision_ids):
570
from bzrlib.atomicfile import AtomicFile
571
572
for revision_id in revision_ids:
573
mutter("add {%s} to revision-history" % revision_id)
574
575
rev_history = self.revision_history()
576
rev_history.extend(revision_ids)
577
578
f = AtomicFile(self.controlfilename('revision-history'))
579
try:
580
for rev_id in rev_history:
581
print >>f, rev_id
582
f.commit()
583
finally:
584
f.close()
585
586
587
def get_revision_xml(self, revision_id):
588
"""Return XML file object for revision object."""
589
if not revision_id or not isinstance(revision_id, basestring):
590
raise InvalidRevisionId(revision_id)
591
592
self.lock_read()
593
try:
594
try:
595
return self.revision_store[revision_id]
596
except IndexError:
597
raise bzrlib.errors.NoSuchRevision(revision_id)
598
finally:
599
self.unlock()
600
601
602
def get_revision(self, revision_id):
603
"""Return the Revision object for a named revision"""
604
xml_file = self.get_revision_xml(revision_id)
605
606
try:
607
r = unpack_xml(Revision, xml_file)
608
except SyntaxError, e:
609
raise bzrlib.errors.BzrError('failed to unpack revision_xml',
610
[revision_id,
611
str(e)])
612
613
assert r.revision_id == revision_id
614
return r
615
181
"""Return absolute filename for something in the branch
182
183
XXX: Robert Collins 20051017 what is this used for? why is it a branch
184
method and not a tree method.
185
"""
186
raise NotImplementedError(self.abspath)
187
188
def bind(self, other):
189
"""Bind the local branch the other branch.
190
191
:param other: The branch to bind to
192
:type other: Branch
193
"""
194
raise errors.UpgradeRequired(self.base)
195
196
@needs_write_lock
197
def fetch(self, from_branch, last_revision=None, pb=None):
198
"""Copy revisions from from_branch into this branch.
199
200
:param from_branch: Where to copy from.
201
:param last_revision: What revision to stop at (None for at the end
202
of the branch.
203
:param pb: An optional progress bar to use.
204
205
Returns the copied revision count and the failed revisions in a tuple:
206
(copied, failures).
207
"""
208
if self.base == from_branch.base:
209
return (0, [])
210
if pb is None:
211
nested_pb = ui.ui_factory.nested_progress_bar()
212
pb = nested_pb
213
else:
214
nested_pb = None
215
216
from_branch.lock_read()
217
try:
218
if last_revision is None:
219
pb.update('get source history')
220
from_history = from_branch.revision_history()
221
if from_history:
222
last_revision = from_history[-1]
223
else:
224
# no history in the source branch
225
last_revision = revision.NULL_REVISION
226
return self.repository.fetch(from_branch.repository,
227
revision_id=last_revision,
228
pb=nested_pb)
229
finally:
230
if nested_pb is not None:
231
nested_pb.finished()
232
from_branch.unlock()
233
234
def get_bound_location(self):
235
"""Return the URL of the branch we are bound to.
236
237
Older format branches cannot bind, please be sure to use a metadir
238
branch.
239
"""
240
return None
241
242
def get_commit_builder(self, parents, config=None, timestamp=None,
243
timezone=None, committer=None, revprops=None,
244
revision_id=None):
245
"""Obtain a CommitBuilder for this branch.
246
247
:param parents: Revision ids of the parents of the new revision.
248
:param config: Optional configuration to use.
249
:param timestamp: Optional timestamp recorded for commit.
250
:param timezone: Optional timezone for timestamp.
251
:param committer: Optional committer to set for commit.
252
:param revprops: Optional dictionary of revision properties.
253
:param revision_id: Optional revision id.
254
"""
255
256
if config is None:
257
config = self.get_config()
258
259
return self.repository.get_commit_builder(self, parents, config,
260
timestamp, timezone, committer, revprops, revision_id)
261
262
def get_master_branch(self):
263
"""Return the branch we are bound to.
264
265
:return: Either a Branch, or None
266
"""
267
return None
616
268
617
269
def get_revision_delta(self, revno):
618
270
"""Return the delta for one revision.
624
276
rh = self.revision_history()
625
277
if not (1 <= revno <= len(rh)):
626
278
raise InvalidRevisionNumber(revno)
627
628
# revno is 1-based; list is 0-based
629
630
new_tree = self.revision_tree(rh[revno-1])
631
if revno == 1:
632
old_tree = EmptyTree()
633
else:
634
old_tree = self.revision_tree(rh[revno-2])
635
636
return compare_trees(old_tree, new_tree)
637
638
639
640
def get_revision_sha1(self, revision_id):
641
"""Hash the stored value of a revision, and return it."""
642
# In the future, revision entries will be signed. At that
643
# point, it is probably best *not* to include the signature
644
# in the revision hash. Because that lets you re-sign
645
# the revision, (add signatures/remove signatures) and still
646
# have all hash pointers stay consistent.
647
# But for now, just hash the contents.
648
return bzrlib.osutils.sha_file(self.get_revision_xml(revision_id))
649
650
651
def get_inventory(self, inventory_id):
652
"""Get Inventory object by hash.
653
654
TODO: Perhaps for this and similar methods, take a revision
655
parameter which can be either an integer revno or a
656
string hash."""
657
from bzrlib.inventory import Inventory
658
from bzrlib.xml import unpack_xml
659
660
return unpack_xml(Inventory, self.inventory_store[inventory_id])
661
662
663
def get_inventory_sha1(self, inventory_id):
664
"""Return the sha1 hash of the inventory entry
665
"""
666
return sha_file(self.inventory_store[inventory_id])
667
668
669
def get_revision_inventory(self, revision_id):
670
"""Return inventory of a past revision."""
671
# bzr 0.0.6 imposes the constraint that the inventory_id
672
# must be the same as its revision, so this is trivial.
673
if revision_id == None:
674
from bzrlib.inventory import Inventory
675
return Inventory(self.get_root_id())
676
else:
677
return self.get_inventory(revision_id)
678
279
return self.repository.get_revision_delta(rh[revno-1])
280
281
def get_root_id(self):
282
"""Return the id of this branches root"""
283
raise NotImplementedError(self.get_root_id)
284
285
def print_file(self, file, revision_id):
286
"""Print `file` to stdout."""
287
raise NotImplementedError(self.print_file)
288
289
def append_revision(self, *revision_ids):
290
raise NotImplementedError(self.append_revision)
291
292
def set_revision_history(self, rev_history):
293
raise NotImplementedError(self.set_revision_history)
679
294
680
295
def revision_history(self):
681
"""Return sequence of revision hashes on to this branch.
682
683
>>> ScratchBranch().revision_history()
684
[]
685
"""
686
self.lock_read()
687
try:
688
return [l.rstrip('\r\n') for l in
689
self.controlfile('revision-history', 'r').readlines()]
690
finally:
691
self.unlock()
692
693
694
def common_ancestor(self, other, self_revno=None, other_revno=None):
695
"""
696
>>> import commit
697
>>> sb = ScratchBranch(files=['foo', 'foo~'])
698
>>> sb.common_ancestor(sb) == (None, None)
699
True
700
>>> commit.commit(sb, "Committing first revision", verbose=False)
701
>>> sb.common_ancestor(sb)[0]
702
1
703
>>> clone = sb.clone()
704
>>> commit.commit(sb, "Committing second revision", verbose=False)
705
>>> sb.common_ancestor(sb)[0]
706
2
707
>>> sb.common_ancestor(clone)[0]
708
1
709
>>> commit.commit(clone, "Committing divergent second revision",
710
... verbose=False)
711
>>> sb.common_ancestor(clone)[0]
712
1
713
>>> sb.common_ancestor(clone) == clone.common_ancestor(sb)
714
True
715
>>> sb.common_ancestor(sb) != clone.common_ancestor(clone)
716
True
717
>>> clone2 = sb.clone()
718
>>> sb.common_ancestor(clone2)[0]
719
2
720
>>> sb.common_ancestor(clone2, self_revno=1)[0]
721
1
722
>>> sb.common_ancestor(clone2, other_revno=1)[0]
723
1
724
"""
725
my_history = self.revision_history()
726
other_history = other.revision_history()
727
if self_revno is None:
728
self_revno = len(my_history)
729
if other_revno is None:
730
other_revno = len(other_history)
731
indices = range(min((self_revno, other_revno)))
732
indices.reverse()
733
for r in indices:
734
if my_history[r] == other_history[r]:
735
return r+1, my_history[r]
736
return None, None
737
296
"""Return sequence of revision hashes on to this branch."""
297
raise NotImplementedError('revision_history is abstract')
738
298
739
299
def revno(self):
740
300
"""Return current revision number for this branch.
744
304
"""
745
305
return len(self.revision_history())
746
306
307
def unbind(self):
308
"""Older format branches cannot bind or unbind."""
309
raise errors.UpgradeRequired(self.base)
747
310
748
def last_patch(self):
749
"""Return last patch hash, or None if no history.
750
"""
311
def last_revision(self):
312
"""Return last revision id, or None"""
751
313
ph = self.revision_history()
752
314
if ph:
753
315
return ph[-1]
754
316
else:
755
317
return None
756
318
757
758
319
def missing_revisions(self, other, stop_revision=None):
759
"""
320
"""Return a list of new revisions that would perfectly fit.
321
760
322
If self and other have not diverged, return a list of the revisions
761
323
present in other, but missing from self.
762
763
>>> from bzrlib.commit import commit
764
>>> bzrlib.trace.silent = True
765
>>> br1 = ScratchBranch()
766
>>> br2 = ScratchBranch()
767
>>> br1.missing_revisions(br2)
768
[]
769
>>> commit(br2, "lala!", rev_id="REVISION-ID-1")
770
>>> br1.missing_revisions(br2)
771
[u'REVISION-ID-1']
772
>>> br2.missing_revisions(br1)
773
[]
774
>>> commit(br1, "lala!", rev_id="REVISION-ID-1")
775
>>> br1.missing_revisions(br2)
776
[]
777
>>> commit(br2, "lala!", rev_id="REVISION-ID-2A")
778
>>> br1.missing_revisions(br2)
779
[u'REVISION-ID-2A']
780
>>> commit(br1, "lala!", rev_id="REVISION-ID-2B")
781
>>> br1.missing_revisions(br2)
782
Traceback (most recent call last):
783
DivergedBranches: These branches have diverged.
784
324
"""
785
325
self_history = self.revision_history()
786
326
self_len = len(self_history)
793
333
794
334
if stop_revision is None:
795
335
stop_revision = other_len
796
elif stop_revision > other_len:
797
raise NoSuchRevision(self, stop_revision)
798
336
else:
337
assert isinstance(stop_revision, int)
338
if stop_revision > other_len:
339
raise errors.NoSuchRevision(self, stop_revision)
799
340
return other_history[self_len:stop_revision]
800
341
801
802
342
def update_revisions(self, other, stop_revision=None):
803
"""Pull in all new revisions from other branch.
804
805
>>> from bzrlib.commit import commit
806
>>> bzrlib.trace.silent = True
807
>>> br1 = ScratchBranch(files=['foo', 'bar'])
808
>>> br1.add('foo')
809
>>> br1.add('bar')
810
>>> commit(br1, "lala!", rev_id="REVISION-ID-1", verbose=False)
811
>>> br2 = ScratchBranch()
812
>>> br2.update_revisions(br1)
813
Added 2 texts.
814
Added 1 inventories.
815
Added 1 revisions.
816
>>> br2.revision_history()
817
[u'REVISION-ID-1']
818
>>> br2.update_revisions(br1)
819
Added 0 texts.
820
Added 0 inventories.
821
Added 0 revisions.
822
>>> br1.text_store.total_size() == br2.text_store.total_size()
823
True
824
"""
825
from bzrlib.progress import ProgressBar
826
827
pb = ProgressBar()
828
829
pb.update('comparing histories')
830
revision_ids = self.missing_revisions(other, stop_revision)
831
832
if hasattr(other.revision_store, "prefetch"):
833
other.revision_store.prefetch(revision_ids)
834
if hasattr(other.inventory_store, "prefetch"):
835
inventory_ids = [other.get_revision(r).inventory_id
836
for r in revision_ids]
837
other.inventory_store.prefetch(inventory_ids)
838
839
revisions = []
840
needed_texts = set()
841
i = 0
842
for rev_id in revision_ids:
843
i += 1
844
pb.update('fetching revision', i, len(revision_ids))
845
rev = other.get_revision(rev_id)
846
revisions.append(rev)
847
inv = other.get_inventory(str(rev.inventory_id))
848
for key, entry in inv.iter_entries():
849
if entry.text_id is None:
850
continue
851
if entry.text_id not in self.text_store:
852
needed_texts.add(entry.text_id)
853
854
pb.clear()
855
856
count = self.text_store.copy_multi(other.text_store, needed_texts)
857
print "Added %d texts." % count
858
inventory_ids = [ f.inventory_id for f in revisions ]
859
count = self.inventory_store.copy_multi(other.inventory_store,
860
inventory_ids)
861
print "Added %d inventories." % count
862
revision_ids = [ f.revision_id for f in revisions]
863
count = self.revision_store.copy_multi(other.revision_store,
864
revision_ids)
865
for revision_id in revision_ids:
866
self.append_revision(revision_id)
867
print "Added %d revisions." % count
868
869
870
def commit(self, *args, **kw):
871
from bzrlib.commit import commit
872
commit(self, *args, **kw)
873
874
875
def lookup_revision(self, revision):
876
"""Return the revision identifier for a given revision information."""
877
revno, info = self.get_revision_info(revision)
878
return info
879
880
def get_revision_info(self, revision):
881
"""Return (revno, revision id) for revision identifier.
882
883
revision can be an integer, in which case it is assumed to be revno (though
884
this will translate negative values into positive ones)
885
revision can also be a string, in which case it is parsed for something like
886
'date:' or 'revid:' etc.
887
"""
888
if revision is None:
889
return 0, None
890
revno = None
891
try:# Convert to int if possible
892
revision = int(revision)
893
except ValueError:
894
pass
895
revs = self.revision_history()
896
if isinstance(revision, int):
897
if revision == 0:
898
return 0, None
899
# Mabye we should do this first, but we don't need it if revision == 0
900
if revision < 0:
901
revno = len(revs) + revision + 1
902
else:
903
revno = revision
904
elif isinstance(revision, basestring):
905
for prefix, func in Branch.REVISION_NAMESPACES.iteritems():
906
if revision.startswith(prefix):
907
revno = func(self, revs, revision)
908
break
909
else:
910
raise BzrError('No namespace registered for string: %r' % revision)
911
912
if revno is None or revno <= 0 or revno > len(revs):
913
raise BzrError("no such revision %s" % revision)
914
return revno, revs[revno-1]
915
916
def _namespace_revno(self, revs, revision):
917
"""Lookup a revision by revision number"""
918
assert revision.startswith('revno:')
919
try:
920
return int(revision[6:])
921
except ValueError:
922
return None
923
REVISION_NAMESPACES['revno:'] = _namespace_revno
924
925
def _namespace_revid(self, revs, revision):
926
assert revision.startswith('revid:')
927
try:
928
return revs.index(revision[6:]) + 1
929
except ValueError:
930
return None
931
REVISION_NAMESPACES['revid:'] = _namespace_revid
932
933
def _namespace_last(self, revs, revision):
934
assert revision.startswith('last:')
935
try:
936
offset = int(revision[5:])
937
except ValueError:
938
return None
939
else:
940
if offset <= 0:
941
raise BzrError('You must supply a positive value for --revision last:XXX')
942
return len(revs) - offset + 1
943
REVISION_NAMESPACES['last:'] = _namespace_last
944
945
def _namespace_tag(self, revs, revision):
946
assert revision.startswith('tag:')
947
raise BzrError('tag: namespace registered, but not implemented.')
948
REVISION_NAMESPACES['tag:'] = _namespace_tag
949
950
def _namespace_date(self, revs, revision):
951
assert revision.startswith('date:')
952
import datetime
953
# Spec for date revisions:
954
# date:value
955
# value can be 'yesterday', 'today', 'tomorrow' or a YYYY-MM-DD string.
956
# it can also start with a '+/-/='. '+' says match the first
957
# entry after the given date. '-' is match the first entry before the date
958
# '=' is match the first entry after, but still on the given date.
959
#
960
# +2005-05-12 says find the first matching entry after May 12th, 2005 at 0:00
961
# -2005-05-12 says find the first matching entry before May 12th, 2005 at 0:00
962
# =2005-05-12 says find the first match after May 12th, 2005 at 0:00 but before
963
# May 13th, 2005 at 0:00
964
#
965
# So the proper way of saying 'give me all entries for today' is:
966
# -r {date:+today}:{date:-tomorrow}
967
# The default is '=' when not supplied
968
val = revision[5:]
969
match_style = '='
970
if val[:1] in ('+', '-', '='):
971
match_style = val[:1]
972
val = val[1:]
973
974
today = datetime.datetime.today().replace(hour=0,minute=0,second=0,microsecond=0)
975
if val.lower() == 'yesterday':
976
dt = today - datetime.timedelta(days=1)
977
elif val.lower() == 'today':
978
dt = today
979
elif val.lower() == 'tomorrow':
980
dt = today + datetime.timedelta(days=1)
981
else:
982
import re
983
# This should be done outside the function to avoid recompiling it.
984
_date_re = re.compile(
985
r'(?P<date>(?P<year>\d\d\d\d)-(?P<month>\d\d)-(?P<day>\d\d))?'
986
r'(,|T)?\s*'
987
r'(?P<time>(?P<hour>\d\d):(?P<minute>\d\d)(:(?P<second>\d\d))?)?'
988
)
989
m = _date_re.match(val)
990
if not m or (not m.group('date') and not m.group('time')):
991
raise BzrError('Invalid revision date %r' % revision)
992
993
if m.group('date'):
994
year, month, day = int(m.group('year')), int(m.group('month')), int(m.group('day'))
995
else:
996
year, month, day = today.year, today.month, today.day
997
if m.group('time'):
998
hour = int(m.group('hour'))
999
minute = int(m.group('minute'))
1000
if m.group('second'):
1001
second = int(m.group('second'))
1002
else:
1003
second = 0
1004
else:
1005
hour, minute, second = 0,0,0
1006
1007
dt = datetime.datetime(year=year, month=month, day=day,
1008
hour=hour, minute=minute, second=second)
1009
first = dt
1010
last = None
1011
reversed = False
1012
if match_style == '-':
1013
reversed = True
1014
elif match_style == '=':
1015
last = dt + datetime.timedelta(days=1)
1016
1017
if reversed:
1018
for i in range(len(revs)-1, -1, -1):
1019
r = self.get_revision(revs[i])
1020
# TODO: Handle timezone.
1021
dt = datetime.datetime.fromtimestamp(r.timestamp)
1022
if first >= dt and (last is None or dt >= last):
1023
return i+1
1024
else:
1025
for i in range(len(revs)):
1026
r = self.get_revision(revs[i])
1027
# TODO: Handle timezone.
1028
dt = datetime.datetime.fromtimestamp(r.timestamp)
1029
if first <= dt and (last is None or dt <= last):
1030
return i+1
1031
REVISION_NAMESPACES['date:'] = _namespace_date
1032
1033
def revision_tree(self, revision_id):
1034
"""Return Tree for a revision on this branch.
1035
1036
`revision_id` may be None for the null revision, in which case
1037
an `EmptyTree` is returned."""
1038
# TODO: refactor this to use an existing revision object
1039
# so we don't need to read it in twice.
1040
if revision_id == None:
1041
return EmptyTree()
1042
else:
1043
inv = self.get_revision_inventory(revision_id)
1044
return RevisionTree(self.text_store, inv)
1045
1046
1047
def working_tree(self):
1048
"""Return a `Tree` for the working copy."""
1049
from workingtree import WorkingTree
1050
return WorkingTree(self.base, self.read_working_inventory())
1051
343
"""Pull in new perfect-fit revisions.
344
345
:param other: Another Branch to pull from
346
:param stop_revision: Updated until the given revision
347
:return: None
348
"""
349
raise NotImplementedError(self.update_revisions)
350
351
def revision_id_to_revno(self, revision_id):
352
"""Given a revision id, return its revno"""
353
if revision_id is None:
354
return 0
355
history = self.revision_history()
356
try:
357
return history.index(revision_id) + 1
358
except ValueError:
359
raise bzrlib.errors.NoSuchRevision(self, revision_id)
360
361
def get_rev_id(self, revno, history=None):
362
"""Find the revision id of the specified revno."""
363
if revno == 0:
364
return None
365
if history is None:
366
history = self.revision_history()
367
if revno <= 0 or revno > len(history):
368
raise bzrlib.errors.NoSuchRevision(self, revno)
369
return history[revno - 1]
370
371
def pull(self, source, overwrite=False, stop_revision=None):
372
raise NotImplementedError(self.pull)
1052
373
1053
374
def basis_tree(self):
1054
"""Return `Tree` object for last revision.
1055
1056
If there are no revisions yet, return an `EmptyTree`.
1057
"""
1058
r = self.last_patch()
1059
if r == None:
1060
return EmptyTree()
1061
else:
1062
return RevisionTree(self.text_store, self.get_revision_inventory(r))
1063
1064
375
"""Return `Tree` object for last revision."""
376
return self.repository.revision_tree(self.last_revision())
1065
377
1066
378
def rename_one(self, from_rel, to_rel):
1067
379
"""Rename one file.
1068
380
1069
381
This can change the directory or the filename or both.
1070
382
"""
1071
self.lock_write()
1072
try:
1073
tree = self.working_tree()
1074
inv = tree.inventory
1075
if not tree.has_filename(from_rel):
1076
raise BzrError("can't rename: old working file %r does not exist" % from_rel)
1077
if tree.has_filename(to_rel):
1078
raise BzrError("can't rename: new working file %r already exists" % to_rel)
1079
1080
file_id = inv.path2id(from_rel)
1081
if file_id == None:
1082
raise BzrError("can't rename: old name %r is not versioned" % from_rel)
1083
1084
if inv.path2id(to_rel):
1085
raise BzrError("can't rename: new name %r is already versioned" % to_rel)
1086
1087
to_dir, to_tail = os.path.split(to_rel)
1088
to_dir_id = inv.path2id(to_dir)
1089
if to_dir_id == None and to_dir != '':
1090
raise BzrError("can't determine destination directory id for %r" % to_dir)
1091
1092
mutter("rename_one:")
1093
mutter(" file_id {%s}" % file_id)
1094
mutter(" from_rel %r" % from_rel)
1095
mutter(" to_rel %r" % to_rel)
1096
mutter(" to_dir %r" % to_dir)
1097
mutter(" to_dir_id {%s}" % to_dir_id)
1098
1099
inv.rename(file_id, to_dir_id, to_tail)
1100
1101
print "%s => %s" % (from_rel, to_rel)
1102
1103
from_abs = self.abspath(from_rel)
1104
to_abs = self.abspath(to_rel)
1105
try:
1106
os.rename(from_abs, to_abs)
1107
except OSError, e:
1108
raise BzrError("failed to rename %r to %r: %s"
1109
% (from_abs, to_abs, e[1]),
1110
["rename rolled back"])
1111
1112
self._write_inventory(inv)
1113
finally:
1114
self.unlock()
1115
383
raise NotImplementedError(self.rename_one)
1116
384
1117
385
def move(self, from_paths, to_name):
1118
386
"""Rename files.
1124
392
1125
393
Note that to_name is only the last component of the new name;
1126
394
this doesn't change the directory.
1127
"""
1128
self.lock_write()
1129
try:
1130
## TODO: Option to move IDs only
1131
assert not isinstance(from_paths, basestring)
1132
tree = self.working_tree()
1133
inv = tree.inventory
1134
to_abs = self.abspath(to_name)
1135
if not isdir(to_abs):
1136
raise BzrError("destination %r is not a directory" % to_abs)
1137
if not tree.has_filename(to_name):
1138
raise BzrError("destination %r not in working directory" % to_abs)
1139
to_dir_id = inv.path2id(to_name)
1140
if to_dir_id == None and to_name != '':
1141
raise BzrError("destination %r is not a versioned directory" % to_name)
1142
to_dir_ie = inv[to_dir_id]
1143
if to_dir_ie.kind not in ('directory', 'root_directory'):
1144
raise BzrError("destination %r is not a directory" % to_abs)
1145
1146
to_idpath = inv.get_idpath(to_dir_id)
1147
1148
for f in from_paths:
1149
if not tree.has_filename(f):
1150
raise BzrError("%r does not exist in working tree" % f)
1151
f_id = inv.path2id(f)
1152
if f_id == None:
1153
raise BzrError("%r is not versioned" % f)
1154
name_tail = splitpath(f)[-1]
1155
dest_path = appendpath(to_name, name_tail)
1156
if tree.has_filename(dest_path):
1157
raise BzrError("destination %r already exists" % dest_path)
1158
if f_id in to_idpath:
1159
raise BzrError("can't move %r to a subdirectory of itself" % f)
1160
1161
# OK, so there's a race here, it's possible that someone will
1162
# create a file in this interval and then the rename might be
1163
# left half-done. But we should have caught most problems.
1164
1165
for f in from_paths:
1166
name_tail = splitpath(f)[-1]
1167
dest_path = appendpath(to_name, name_tail)
1168
print "%s => %s" % (f, dest_path)
1169
inv.rename(inv.path2id(f), to_dir_id, name_tail)
1170
try:
1171
os.rename(self.abspath(f), self.abspath(dest_path))
1172
except OSError, e:
1173
raise BzrError("failed to rename %r to %r: %s" % (f, dest_path, e[1]),
1174
["rename rolled back"])
1175
1176
self._write_inventory(inv)
1177
finally:
1178
self.unlock()
1179
1180
1181
def revert(self, filenames, old_tree=None, backups=True):
1182
"""Restore selected files to the versions from a previous tree.
1183
1184
backups
1185
If true (default) backups are made of files before
1186
they're renamed.
1187
"""
1188
from bzrlib.errors import NotVersionedError, BzrError
1189
from bzrlib.atomicfile import AtomicFile
1190
from bzrlib.osutils import backup_file
1191
1192
inv = self.read_working_inventory()
1193
if old_tree is None:
1194
old_tree = self.basis_tree()
1195
old_inv = old_tree.inventory
1196
1197
nids = []
1198
for fn in filenames:
1199
file_id = inv.path2id(fn)
1200
if not file_id:
1201
raise NotVersionedError("not a versioned file", fn)
1202
if not old_inv.has_id(file_id):
1203
raise BzrError("file not present in old tree", fn, file_id)
1204
nids.append((fn, file_id))
1205
1206
# TODO: Rename back if it was previously at a different location
1207
1208
# TODO: If given a directory, restore the entire contents from
1209
# the previous version.
1210
1211
# TODO: Make a backup to a temporary file.
1212
1213
# TODO: If the file previously didn't exist, delete it?
1214
for fn, file_id in nids:
1215
backup_file(fn)
1216
1217
f = AtomicFile(fn, 'wb')
1218
try:
1219
f.write(old_tree.get_file(file_id).read())
1220
f.commit()
1221
finally:
1222
f.close()
1223
1224
1225
def pending_merges(self):
1226
"""Return a list of pending merges.
1227
1228
These are revisions that have been merged into the working
1229
directory but not yet committed.
1230
"""
1231
cfn = self.controlfilename('pending-merges')
1232
if not os.path.exists(cfn):
1233
return []
1234
p = []
1235
for l in self.controlfile('pending-merges', 'r').readlines():
1236
p.append(l.rstrip('\n'))
1237
return p
1238
1239
1240
def add_pending_merge(self, revision_id):
1241
from bzrlib.revision import validate_revision_id
1242
1243
validate_revision_id(revision_id)
1244
1245
p = self.pending_merges()
1246
if revision_id in p:
1247
return
1248
p.append(revision_id)
1249
self.set_pending_merges(p)
1250
1251
1252
def set_pending_merges(self, rev_list):
1253
from bzrlib.atomicfile import AtomicFile
1254
self.lock_write()
1255
try:
1256
f = AtomicFile(self.controlfilename('pending-merges'))
1257
try:
1258
for l in rev_list:
1259
print >>f, l
1260
f.commit()
1261
finally:
1262
f.close()
1263
finally:
1264
self.unlock()
1265
1266
1267
1268
class ScratchBranch(Branch):
1269
"""Special test class: a branch that cleans up after itself.
1270
1271
>>> b = ScratchBranch()
1272
>>> isdir(b.base)
1273
True
1274
>>> bd = b.base
1275
>>> b.destroy()
1276
>>> isdir(bd)
1277
False
1278
"""
1279
def __init__(self, files=[], dirs=[], base=None):
1280
"""Make a test branch.
1281
1282
This creates a temporary directory and runs init-tree in it.
1283
1284
If any files are listed, they are created in the working copy.
1285
"""
1286
from tempfile import mkdtemp
1287
init = False
1288
if base is None:
1289
base = mkdtemp()
1290
init = True
1291
Branch.__init__(self, base, init=init)
1292
for d in dirs:
1293
os.mkdir(self.abspath(d))
1294
1295
for f in files:
1296
file(os.path.join(self.base, f), 'w').write('content of %s' % f)
1297
1298
1299
def clone(self):
1300
"""
1301
>>> orig = ScratchBranch(files=["file1", "file2"])
1302
>>> clone = orig.clone()
1303
>>> os.path.samefile(orig.base, clone.base)
1304
False
1305
>>> os.path.isfile(os.path.join(clone.base, "file1"))
1306
True
1307
"""
1308
from shutil import copytree
1309
from tempfile import mkdtemp
1310
base = mkdtemp()
1311
os.rmdir(base)
1312
copytree(self.base, base, symlinks=True)
1313
return ScratchBranch(base=base)
1314
1315
def __del__(self):
1316
self.destroy()
1317
1318
def destroy(self):
1319
"""Destroy the test branch, removing the scratch directory."""
1320
from shutil import rmtree
1321
try:
1322
if self.base:
1323
mutter("delete ScratchBranch %s" % self.base)
1324
rmtree(self.base)
1325
except OSError, e:
1326
# Work around for shutil.rmtree failing on Windows when
1327
# readonly files are encountered
1328
mutter("hit exception in destroying ScratchBranch: %s" % e)
1329
for root, dirs, files in os.walk(self.base, topdown=False):
1330
for name in files:
1331
os.chmod(os.path.join(root, name), 0700)
1332
rmtree(self.base)
1333
self.base = None
1334
1335
395
396
This returns a list of (from_path, to_path) pairs for each
397
entry that is moved.
398
"""
399
raise NotImplementedError(self.move)
400
401
def get_parent(self):
402
"""Return the parent location of the branch.
403
404
This is the default location for push/pull/missing. The usual
405
pattern is that the user can override it by specifying a
406
location.
407
"""
408
raise NotImplementedError(self.get_parent)
409
410
def get_submit_branch(self):
411
"""Return the submit location of the branch.
412
413
This is the default location for bundle. The usual
414
pattern is that the user can override it by specifying a
415
location.
416
"""
417
return self.get_config().get_user_option('submit_branch')
418
419
def set_submit_branch(self, location):
420
"""Return the submit location of the branch.
421
422
This is the default location for bundle. The usual
423
pattern is that the user can override it by specifying a
424
location.
425
"""
426
self.get_config().set_user_option('submit_branch', location)
427
428
def get_push_location(self):
429
"""Return the None or the location to push this branch to."""
430
raise NotImplementedError(self.get_push_location)
431
432
def set_push_location(self, location):
433
"""Set a new push location for this branch."""
434
raise NotImplementedError(self.set_push_location)
435
436
def set_parent(self, url):
437
raise NotImplementedError(self.set_parent)
438
439
@needs_write_lock
440
def update(self):
441
"""Synchronise this branch with the master branch if any.
442
443
:return: None or the last_revision pivoted out during the update.
444
"""
445
return None
446
447
def check_revno(self, revno):
448
"""\
449
Check whether a revno corresponds to any revision.
450
Zero (the NULL revision) is considered valid.
451
"""
452
if revno != 0:
453
self.check_real_revno(revno)
454
455
def check_real_revno(self, revno):
456
"""\
457
Check whether a revno corresponds to a real revision.
458
Zero (the NULL revision) is considered invalid
459
"""
460
if revno < 1 or revno > self.revno():
461
raise InvalidRevisionNumber(revno)
462
463
@needs_read_lock
464
def clone(self, *args, **kwargs):
465
"""Clone this branch into to_bzrdir preserving all semantic values.
466
467
revision_id: if not None, the revision history in the new branch will
468
be truncated to end with revision_id.
469
"""
470
# for API compatibility, until 0.8 releases we provide the old api:
471
# def clone(self, to_location, revision=None, basis_branch=None, to_branch_format=None):
472
# after 0.8 releases, the *args and **kwargs should be changed:
473
# def clone(self, to_bzrdir, revision_id=None):
474
if (kwargs.get('to_location', None) or
475
kwargs.get('revision', None) or
476
kwargs.get('basis_branch', None) or
477
(len(args) and isinstance(args[0], basestring))):
478
# backwards compatibility api:
479
warn("Branch.clone() has been deprecated for BzrDir.clone() from"
480
" bzrlib 0.8.", DeprecationWarning, stacklevel=3)
481
# get basis_branch
482
if len(args) > 2:
483
basis_branch = args[2]
484
else:
485
basis_branch = kwargs.get('basis_branch', None)
486
if basis_branch:
487
basis = basis_branch.bzrdir
488
else:
489
basis = None
490
# get revision
491
if len(args) > 1:
492
revision_id = args[1]
493
else:
494
revision_id = kwargs.get('revision', None)
495
# get location
496
if len(args):
497
url = args[0]
498
else:
499
# no default to raise if not provided.
500
url = kwargs.get('to_location')
501
return self.bzrdir.clone(url,
502
revision_id=revision_id,
503
basis=basis).open_branch()
504
# new cleaner api.
505
# generate args by hand
506
if len(args) > 1:
507
revision_id = args[1]
508
else:
509
revision_id = kwargs.get('revision_id', None)
510
if len(args):
511
to_bzrdir = args[0]
512
else:
513
# no default to raise if not provided.
514
to_bzrdir = kwargs.get('to_bzrdir')
515
result = self._format.initialize(to_bzrdir)
516
self.copy_content_into(result, revision_id=revision_id)
517
return result
518
519
@needs_read_lock
520
def sprout(self, to_bzrdir, revision_id=None):
521
"""Create a new line of development from the branch, into to_bzrdir.
522
523
revision_id: if not None, the revision history in the new branch will
524
be truncated to end with revision_id.
525
"""
526
result = self._format.initialize(to_bzrdir)
527
self.copy_content_into(result, revision_id=revision_id)
528
result.set_parent(self.bzrdir.root_transport.base)
529
return result
530
531
@needs_read_lock
532
def copy_content_into(self, destination, revision_id=None):
533
"""Copy the content of self into destination.
534
535
revision_id: if not None, the revision history in the new branch will
536
be truncated to end with revision_id.
537
"""
538
new_history = self.revision_history()
539
if revision_id is not None:
540
try:
541
new_history = new_history[:new_history.index(revision_id) + 1]
542
except ValueError:
543
rev = self.repository.get_revision(revision_id)
544
new_history = rev.get_history(self.repository)[1:]
545
destination.set_revision_history(new_history)
546
try:
547
parent = self.get_parent()
548
except errors.InaccessibleParent, e:
549
mutter('parent was not accessible to copy: %s', e)
550
else:
551
if parent:
552
destination.set_parent(parent)
553
554
@needs_read_lock
555
def check(self):
556
"""Check consistency of the branch.
557
558
In particular this checks that revisions given in the revision-history
559
do actually match up in the revision graph, and that they're all
560
present in the repository.
561
562
Callers will typically also want to check the repository.
563
564
:return: A BranchCheckResult.
565
"""
566
mainline_parent_id = None
567
for revision_id in self.revision_history():
568
try:
569
revision = self.repository.get_revision(revision_id)
570
except errors.NoSuchRevision, e:
571
raise errors.BzrCheckError("mainline revision {%s} not in repository"
572
% revision_id)
573
# In general the first entry on the revision history has no parents.
574
# But it's not illegal for it to have parents listed; this can happen
575
# in imports from Arch when the parents weren't reachable.
576
if mainline_parent_id is not None:
577
if mainline_parent_id not in revision.parent_ids:
578
raise errors.BzrCheckError("previous revision {%s} not listed among "
579
"parents of {%s}"
580
% (mainline_parent_id, revision_id))
581
mainline_parent_id = revision_id
582
return BranchCheckResult(self)
583
584
def _get_checkout_format(self):
585
"""Return the most suitable metadir for a checkout of this branch.
586
Weaves are used if this branch's repostory uses weaves.
587
"""
588
if isinstance(self.bzrdir, bzrdir.BzrDirPreSplitOut):
589
from bzrlib import repository
590
format = bzrdir.BzrDirMetaFormat1()
591
format.repository_format = repository.RepositoryFormat7()
592
else:
593
format = self.repository.bzrdir.cloning_metadir()
594
return format
595
596
def create_checkout(self, to_location, revision_id=None,
597
lightweight=False):
598
"""Create a checkout of a branch.
599
600
:param to_location: The url to produce the checkout at
601
:param revision_id: The revision to check out
602
:param lightweight: If True, produce a lightweight checkout, otherwise,
603
produce a bound branch (heavyweight checkout)
604
:return: The tree of the created checkout
605
"""
606
t = transport.get_transport(to_location)
607
try:
608
t.mkdir('.')
609
except errors.FileExists:
610
pass
611
if lightweight:
612
checkout = bzrdir.BzrDirMetaFormat1().initialize_on_transport(t)
613
BranchReferenceFormat().initialize(checkout, self)
614
else:
615
format = self._get_checkout_format()
616
checkout_branch = bzrdir.BzrDir.create_branch_convenience(
617
to_location, force_new_tree=False, format=format)
618
checkout = checkout_branch.bzrdir
619
checkout_branch.bind(self)
620
if revision_id is not None:
621
rh = checkout_branch.revision_history()
622
new_rh = rh[:rh.index(revision_id) + 1]
623
checkout_branch.set_revision_history(new_rh)
624
return checkout.create_workingtree(revision_id)
625
626
627
class BranchFormat(object):
628
"""An encapsulation of the initialization and open routines for a format.
629
630
Formats provide three things:
631
* An initialization routine,
632
* a format string,
633
* an open routine.
634
635
Formats are placed in an dict by their format string for reference
636
during branch opening. Its not required that these be instances, they
637
can be classes themselves with class methods - it simply depends on
638
whether state is needed for a given format or not.
639
640
Once a format is deprecated, just deprecate the initialize and open
641
methods on the format class. Do not deprecate the object, as the
642
object will be created every time regardless.
643
"""
644
645
_default_format = None
646
"""The default format used for new branches."""
647
648
_formats = {}
649
"""The known formats."""
650
651
@classmethod
652
def find_format(klass, a_bzrdir):
653
"""Return the format for the branch object in a_bzrdir."""
654
try:
655
transport = a_bzrdir.get_branch_transport(None)
656
format_string = transport.get("format").read()
657
return klass._formats[format_string]
658
except NoSuchFile:
659
raise NotBranchError(path=transport.base)
660
except KeyError:
661
raise errors.UnknownFormatError(format=format_string)
662
663
@classmethod
664
def get_default_format(klass):
665
"""Return the current default format."""
666
return klass._default_format
667
668
def get_format_string(self):
669
"""Return the ASCII format string that identifies this format."""
670
raise NotImplementedError(self.get_format_string)
671
672
def get_format_description(self):
673
"""Return the short format description for this format."""
674
raise NotImplementedError(self.get_format_string)
675
676
def initialize(self, a_bzrdir):
677
"""Create a branch of this format in a_bzrdir."""
678
raise NotImplementedError(self.initialize)
679
680
def is_supported(self):
681
"""Is this format supported?
682
683
Supported formats can be initialized and opened.
684
Unsupported formats may not support initialization or committing or
685
some other features depending on the reason for not being supported.
686
"""
687
return True
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
raise NotImplementedError(self.open)
696
697
@classmethod
698
def register_format(klass, format):
699
klass._formats[format.get_format_string()] = format
700
701
@classmethod
702
def set_default_format(klass, format):
703
klass._default_format = format
704
705
@classmethod
706
def unregister_format(klass, format):
707
assert klass._formats[format.get_format_string()] is format
708
del klass._formats[format.get_format_string()]
709
710
def __str__(self):
711
return self.get_format_string().rstrip()
712
713
714
class BzrBranchFormat4(BranchFormat):
715
"""Bzr branch format 4.
716
717
This format has:
718
- a revision-history file.
719
- a branch-lock lock file [ to be shared with the bzrdir ]
720
"""
721
722
def get_format_description(self):
723
"""See BranchFormat.get_format_description()."""
724
return "Branch format 4"
725
726
def initialize(self, a_bzrdir):
727
"""Create a branch of this format in a_bzrdir."""
728
mutter('creating branch in %s', a_bzrdir.transport.base)
729
branch_transport = a_bzrdir.get_branch_transport(self)
730
utf8_files = [('revision-history', ''),
731
('branch-name', ''),
732
]
733
control_files = LockableFiles(branch_transport, 'branch-lock',
734
TransportLock)
735
control_files.create_lock()
736
control_files.lock_write()
737
try:
738
for file, content in utf8_files:
739
control_files.put_utf8(file, content)
740
finally:
741
control_files.unlock()
742
return self.open(a_bzrdir, _found=True)
743
744
def __init__(self):
745
super(BzrBranchFormat4, self).__init__()
746
self._matchingbzrdir = bzrdir.BzrDirFormat6()
747
748
def open(self, a_bzrdir, _found=False):
749
"""Return the branch object for a_bzrdir
750
751
_found is a private parameter, do not use it. It is used to indicate
752
if format probing has already be done.
753
"""
754
if not _found:
755
# we are being called directly and must probe.
756
raise NotImplementedError
757
return BzrBranch(_format=self,
758
_control_files=a_bzrdir._control_files,
759
a_bzrdir=a_bzrdir,
760
_repository=a_bzrdir.open_repository())
761
762
def __str__(self):
763
return "Bazaar-NG branch format 4"
764
765
766
class BzrBranchFormat5(BranchFormat):
767
"""Bzr branch format 5.
768
769
This format has:
770
- a revision-history file.
771
- a format string
772
- a lock dir guarding the branch itself
773
- all of this stored in a branch/ subdirectory
774
- works with shared repositories.
775
776
This format is new in bzr 0.8.
777
"""
778
779
def get_format_string(self):
780
"""See BranchFormat.get_format_string()."""
781
return "Bazaar-NG branch format 5\n"
782
783
def get_format_description(self):
784
"""See BranchFormat.get_format_description()."""
785
return "Branch format 5"
786
787
def initialize(self, a_bzrdir):
788
"""Create a branch of this format in a_bzrdir."""
789
mutter('creating branch %r in %s', self, a_bzrdir.transport.base)
790
branch_transport = a_bzrdir.get_branch_transport(self)
791
utf8_files = [('revision-history', ''),
792
('branch-name', ''),
793
]
794
control_files = LockableFiles(branch_transport, 'lock', lockdir.LockDir)
795
control_files.create_lock()
796
control_files.lock_write()
797
control_files.put_utf8('format', self.get_format_string())
798
try:
799
for file, content in utf8_files:
800
control_files.put_utf8(file, content)
801
finally:
802
control_files.unlock()
803
return self.open(a_bzrdir, _found=True, )
804
805
def __init__(self):
806
super(BzrBranchFormat5, self).__init__()
807
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
808
809
def open(self, a_bzrdir, _found=False):
810
"""Return the branch object for a_bzrdir
811
812
_found is a private parameter, do not use it. It is used to indicate
813
if format probing has already be done.
814
"""
815
if not _found:
816
format = BranchFormat.find_format(a_bzrdir)
817
assert format.__class__ == self.__class__
818
transport = a_bzrdir.get_branch_transport(None)
819
control_files = LockableFiles(transport, 'lock', lockdir.LockDir)
820
return BzrBranch5(_format=self,
821
_control_files=control_files,
822
a_bzrdir=a_bzrdir,
823
_repository=a_bzrdir.find_repository())
824
825
def __str__(self):
826
return "Bazaar-NG Metadir branch format 5"
827
828
829
class BranchReferenceFormat(BranchFormat):
830
"""Bzr branch reference format.
831
832
Branch references are used in implementing checkouts, they
833
act as an alias to the real branch which is at some other url.
834
835
This format has:
836
- A location file
837
- a format string
838
"""
839
840
def get_format_string(self):
841
"""See BranchFormat.get_format_string()."""
842
return "Bazaar-NG Branch Reference Format 1\n"
843
844
def get_format_description(self):
845
"""See BranchFormat.get_format_description()."""
846
return "Checkout reference format 1"
847
848
def initialize(self, a_bzrdir, target_branch=None):
849
"""Create a branch of this format in a_bzrdir."""
850
if target_branch is None:
851
# this format does not implement branch itself, thus the implicit
852
# creation contract must see it as uninitializable
853
raise errors.UninitializableFormat(self)
854
mutter('creating branch reference in %s', a_bzrdir.transport.base)
855
branch_transport = a_bzrdir.get_branch_transport(self)
856
branch_transport.put_bytes('location',
857
target_branch.bzrdir.root_transport.base)
858
branch_transport.put_bytes('format', self.get_format_string())
859
return self.open(a_bzrdir, _found=True)
860
861
def __init__(self):
862
super(BranchReferenceFormat, self).__init__()
863
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
864
865
def _make_reference_clone_function(format, a_branch):
866
"""Create a clone() routine for a branch dynamically."""
867
def clone(to_bzrdir, revision_id=None):
868
"""See Branch.clone()."""
869
return format.initialize(to_bzrdir, a_branch)
870
# cannot obey revision_id limits when cloning a reference ...
871
# FIXME RBC 20060210 either nuke revision_id for clone, or
872
# emit some sort of warning/error to the caller ?!
873
return clone
874
875
def open(self, a_bzrdir, _found=False):
876
"""Return the branch that the branch reference in a_bzrdir points at.
877
878
_found is a private parameter, do not use it. It is used to indicate
879
if format probing has already be done.
880
"""
881
if not _found:
882
format = BranchFormat.find_format(a_bzrdir)
883
assert format.__class__ == self.__class__
884
transport = a_bzrdir.get_branch_transport(None)
885
real_bzrdir = bzrdir.BzrDir.open(transport.get('location').read())
886
result = real_bzrdir.open_branch()
887
# this changes the behaviour of result.clone to create a new reference
888
# rather than a copy of the content of the branch.
889
# I did not use a proxy object because that needs much more extensive
890
# testing, and we are only changing one behaviour at the moment.
891
# If we decide to alter more behaviours - i.e. the implicit nickname
892
# then this should be refactored to introduce a tested proxy branch
893
# and a subclass of that for use in overriding clone() and ....
894
# - RBC 20060210
895
result.clone = self._make_reference_clone_function(result)
896
return result
897
898
899
# formats which have no format string are not discoverable
900
# and not independently creatable, so are not registered.
901
__default_format = BzrBranchFormat5()
902
BranchFormat.register_format(__default_format)
903
BranchFormat.register_format(BranchReferenceFormat())
904
BranchFormat.set_default_format(__default_format)
905
_legacy_formats = [BzrBranchFormat4(),
906
]
907
908
class BzrBranch(Branch):
909
"""A branch stored in the actual filesystem.
910
911
Note that it's "local" in the context of the filesystem; it doesn't
912
really matter if it's on an nfs/smb/afs/coda/... share, as long as
913
it's writable, and can be accessed via the normal filesystem API.
914
"""
915
916
def __init__(self, transport=DEPRECATED_PARAMETER, init=DEPRECATED_PARAMETER,
917
relax_version_check=DEPRECATED_PARAMETER, _format=None,
918
_control_files=None, a_bzrdir=None, _repository=None):
919
"""Create new branch object at a particular location.
920
921
transport -- A Transport object, defining how to access files.
922
923
init -- If True, create new control files in a previously
924
unversioned directory. If False, the branch must already
925
be versioned.
926
927
relax_version_check -- If true, the usual check for the branch
928
version is not applied. This is intended only for
929
upgrade/recovery type use; it's not guaranteed that
930
all operations will work on old format branches.
931
"""
932
if a_bzrdir is None:
933
self.bzrdir = bzrdir.BzrDir.open(transport.base)
934
else:
935
self.bzrdir = a_bzrdir
936
self._transport = self.bzrdir.transport.clone('..')
937
self._base = self._transport.base
938
self._format = _format
939
if _control_files is None:
940
raise ValueError('BzrBranch _control_files is None')
941
self.control_files = _control_files
942
if deprecated_passed(init):
943
warn("BzrBranch.__init__(..., init=XXX): The init parameter is "
944
"deprecated as of bzr 0.8. Please use Branch.create().",
945
DeprecationWarning,
946
stacklevel=2)
947
if init:
948
# this is slower than before deprecation, oh well never mind.
949
# -> its deprecated.
950
self._initialize(transport.base)
951
self._check_format(_format)
952
if deprecated_passed(relax_version_check):
953
warn("BzrBranch.__init__(..., relax_version_check=XXX_: The "
954
"relax_version_check parameter is deprecated as of bzr 0.8. "
955
"Please use BzrDir.open_downlevel, or a BzrBranchFormat's "
956
"open() method.",
957
DeprecationWarning,
958
stacklevel=2)
959
if (not relax_version_check
960
and not self._format.is_supported()):
961
raise errors.UnsupportedFormatError(format=fmt)
962
if deprecated_passed(transport):
963
warn("BzrBranch.__init__(transport=XXX...): The transport "
964
"parameter is deprecated as of bzr 0.8. "
965
"Please use Branch.open, or bzrdir.open_branch().",
966
DeprecationWarning,
967
stacklevel=2)
968
self.repository = _repository
969
970
def __str__(self):
971
return '%s(%r)' % (self.__class__.__name__, self.base)
972
973
__repr__ = __str__
974
975
def _get_base(self):
976
return self._base
977
978
base = property(_get_base, doc="The URL for the root of this branch.")
979
980
def _finish_transaction(self):
981
"""Exit the current transaction."""
982
return self.control_files._finish_transaction()
983
984
def get_transaction(self):
985
"""Return the current active transaction.
986
987
If no transaction is active, this returns a passthrough object
988
for which all data is immediately flushed and no caching happens.
989
"""
990
# this is an explicit function so that we can do tricky stuff
991
# when the storage in rev_storage is elsewhere.
992
# we probably need to hook the two 'lock a location' and
993
# 'have a transaction' together more delicately, so that
994
# we can have two locks (branch and storage) and one transaction
995
# ... and finishing the transaction unlocks both, but unlocking
996
# does not. - RBC 20051121
997
return self.control_files.get_transaction()
998
999
def _set_transaction(self, transaction):
1000
"""Set a new active transaction."""
1001
return self.control_files._set_transaction(transaction)
1002
1003
def abspath(self, name):
1004
"""See Branch.abspath."""
1005
return self.control_files._transport.abspath(name)
1006
1007
def _check_format(self, format):
1008
"""Identify the branch format if needed.
1009
1010
The format is stored as a reference to the format object in
1011
self._format for code that needs to check it later.
1012
1013
The format parameter is either None or the branch format class
1014
used to open this branch.
1015
1016
FIXME: DELETE THIS METHOD when pre 0.8 support is removed.
1017
"""
1018
if format is None:
1019
format = BranchFormat.find_format(self.bzrdir)
1020
self._format = format
1021
mutter("got branch format %s", self._format)
1022
1023
@needs_read_lock
1024
def get_root_id(self):
1025
"""See Branch.get_root_id."""
1026
tree = self.repository.revision_tree(self.last_revision())
1027
return tree.inventory.root.file_id
1028
1029
def is_locked(self):
1030
return self.control_files.is_locked()
1031
1032
def lock_write(self):
1033
self.repository.lock_write()
1034
try:
1035
self.control_files.lock_write()
1036
except:
1037
self.repository.unlock()
1038
raise
1039
1040
def lock_read(self):
1041
self.repository.lock_read()
1042
try:
1043
self.control_files.lock_read()
1044
except:
1045
self.repository.unlock()
1046
raise
1047
1048
def unlock(self):
1049
# TODO: test for failed two phase locks. This is known broken.
1050
try:
1051
self.control_files.unlock()
1052
finally:
1053
self.repository.unlock()
1054
1055
def peek_lock_mode(self):
1056
if self.control_files._lock_count == 0:
1057
return None
1058
else:
1059
return self.control_files._lock_mode
1060
1061
def get_physical_lock_status(self):
1062
return self.control_files.get_physical_lock_status()
1063
1064
@needs_read_lock
1065
def print_file(self, file, revision_id):
1066
"""See Branch.print_file."""
1067
return self.repository.print_file(file, revision_id)
1068
1069
@needs_write_lock
1070
def append_revision(self, *revision_ids):
1071
"""See Branch.append_revision."""
1072
for revision_id in revision_ids:
1073
mutter("add {%s} to revision-history" % revision_id)
1074
rev_history = self.revision_history()
1075
rev_history.extend(revision_ids)
1076
self.set_revision_history(rev_history)
1077
1078
@needs_write_lock
1079
def set_revision_history(self, rev_history):
1080
"""See Branch.set_revision_history."""
1081
self.control_files.put_utf8(
1082
'revision-history', '\n'.join(rev_history))
1083
transaction = self.get_transaction()
1084
history = transaction.map.find_revision_history()
1085
if history is not None:
1086
# update the revision history in the identity map.
1087
history[:] = list(rev_history)
1088
# this call is disabled because revision_history is
1089
# not really an object yet, and the transaction is for objects.
1090
# transaction.register_dirty(history)
1091
else:
1092
transaction.map.add_revision_history(rev_history)
1093
# this call is disabled because revision_history is
1094
# not really an object yet, and the transaction is for objects.
1095
# transaction.register_clean(history)
1096
1097
@needs_read_lock
1098
def revision_history(self):
1099
"""See Branch.revision_history."""
1100
transaction = self.get_transaction()
1101
history = transaction.map.find_revision_history()
1102
if history is not None:
1103
# mutter("cache hit for revision-history in %s", self)
1104
return list(history)
1105
decode_utf8 = cache_utf8.decode
1106
history = [decode_utf8(l.rstrip('\r\n')) for l in
1107
self.control_files.get('revision-history').readlines()]
1108
transaction.map.add_revision_history(history)
1109
# this call is disabled because revision_history is
1110
# not really an object yet, and the transaction is for objects.
1111
# transaction.register_clean(history, precious=True)
1112
return list(history)
1113
1114
@needs_write_lock
1115
def generate_revision_history(self, revision_id, last_rev=None,
1116
other_branch=None):
1117
"""Create a new revision history that will finish with revision_id.
1118
1119
:param revision_id: the new tip to use.
1120
:param last_rev: The previous last_revision. If not None, then this
1121
must be a ancestory of revision_id, or DivergedBranches is raised.
1122
:param other_branch: The other branch that DivergedBranches should
1123
raise with respect to.
1124
"""
1125
# stop_revision must be a descendant of last_revision
1126
stop_graph = self.repository.get_revision_graph(revision_id)
1127
if last_rev is not None and last_rev not in stop_graph:
1128
# our previous tip is not merged into stop_revision
1129
raise errors.DivergedBranches(self, other_branch)
1130
# make a new revision history from the graph
1131
current_rev_id = revision_id
1132
new_history = []
1133
while current_rev_id not in (None, revision.NULL_REVISION):
1134
new_history.append(current_rev_id)
1135
current_rev_id_parents = stop_graph[current_rev_id]
1136
try:
1137
current_rev_id = current_rev_id_parents[0]
1138
except IndexError:
1139
current_rev_id = None
1140
new_history.reverse()
1141
self.set_revision_history(new_history)
1142
1143
@needs_write_lock
1144
def update_revisions(self, other, stop_revision=None):
1145
"""See Branch.update_revisions."""
1146
other.lock_read()
1147
try:
1148
if stop_revision is None:
1149
stop_revision = other.last_revision()
1150
if stop_revision is None:
1151
# if there are no commits, we're done.
1152
return
1153
# whats the current last revision, before we fetch [and change it
1154
# possibly]
1155
last_rev = self.last_revision()
1156
# we fetch here regardless of whether we need to so that we pickup
1157
# filled in ghosts.
1158
self.fetch(other, stop_revision)
1159
my_ancestry = self.repository.get_ancestry(last_rev)
1160
if stop_revision in my_ancestry:
1161
# last_revision is a descendant of stop_revision
1162
return
1163
self.generate_revision_history(stop_revision, last_rev=last_rev,
1164
other_branch=other)
1165
finally:
1166
other.unlock()
1167
1168
def basis_tree(self):
1169
"""See Branch.basis_tree."""
1170
return self.repository.revision_tree(self.last_revision())
1171
1172
@deprecated_method(zero_eight)
1173
def working_tree(self):
1174
"""Create a Working tree object for this branch."""
1175
1176
from bzrlib.transport.local import LocalTransport
1177
if (self.base.find('://') != -1 or
1178
not isinstance(self._transport, LocalTransport)):
1179
raise NoWorkingTree(self.base)
1180
return self.bzrdir.open_workingtree()
1181
1182
@needs_write_lock
1183
def pull(self, source, overwrite=False, stop_revision=None):
1184
"""See Branch.pull."""
1185
source.lock_read()
1186
try:
1187
old_count = len(self.revision_history())
1188
try:
1189
self.update_revisions(source,stop_revision)
1190
except DivergedBranches:
1191
if not overwrite:
1192
raise
1193
if overwrite:
1194
self.set_revision_history(source.revision_history())
1195
new_count = len(self.revision_history())
1196
return new_count - old_count
1197
finally:
1198
source.unlock()
1199
1200
def get_parent(self):
1201
"""See Branch.get_parent."""
1202
1203
_locs = ['parent', 'pull', 'x-pull']
1204
assert self.base[-1] == '/'
1205
for l in _locs:
1206
try:
1207
parent = self.control_files.get(l).read().strip('\n')
1208
except NoSuchFile:
1209
continue
1210
# This is an old-format absolute path to a local branch
1211
# turn it into a url
1212
if parent.startswith('/'):
1213
parent = urlutils.local_path_to_url(parent.decode('utf8'))
1214
try:
1215
return urlutils.join(self.base[:-1], parent)
1216
except errors.InvalidURLJoin, e:
1217
raise errors.InaccessibleParent(parent, self.base)
1218
return None
1219
1220
def get_push_location(self):
1221
"""See Branch.get_push_location."""
1222
push_loc = self.get_config().get_user_option('push_location')
1223
return push_loc
1224
1225
def set_push_location(self, location):
1226
"""See Branch.set_push_location."""
1227
self.get_config().set_user_option('push_location', location,
1228
local=True)
1229
1230
@needs_write_lock
1231
def set_parent(self, url):
1232
"""See Branch.set_parent."""
1233
# TODO: Maybe delete old location files?
1234
# URLs should never be unicode, even on the local fs,
1235
# FIXUP this and get_parent in a future branch format bump:
1236
# read and rewrite the file, and have the new format code read
1237
# using .get not .get_utf8. RBC 20060125
1238
if url is None:
1239
self.control_files._transport.delete('parent')
1240
else:
1241
if isinstance(url, unicode):
1242
try:
1243
url = url.encode('ascii')
1244
except UnicodeEncodeError:
1245
raise bzrlib.errors.InvalidURL(url,
1246
"Urls must be 7-bit ascii, "
1247
"use bzrlib.urlutils.escape")
1248
1249
url = urlutils.relative_url(self.base, url)
1250
self.control_files.put('parent', StringIO(url + '\n'))
1251
1252
@deprecated_function(zero_nine)
1253
def tree_config(self):
1254
"""DEPRECATED; call get_config instead.
1255
TreeConfig has become part of BranchConfig."""
1256
return TreeConfig(self)
1257
1258
1259
class BzrBranch5(BzrBranch):
1260
"""A format 5 branch. This supports new features over plan branches.
1261
1262
It has support for a master_branch which is the data for bound branches.
1263
"""
1264
1265
def __init__(self,
1266
_format,
1267
_control_files,
1268
a_bzrdir,
1269
_repository):
1270
super(BzrBranch5, self).__init__(_format=_format,
1271
_control_files=_control_files,
1272
a_bzrdir=a_bzrdir,
1273
_repository=_repository)
1274
1275
@needs_write_lock
1276
def pull(self, source, overwrite=False, stop_revision=None):
1277
"""Updates branch.pull to be bound branch aware."""
1278
bound_location = self.get_bound_location()
1279
if source.base != bound_location:
1280
# not pulling from master, so we need to update master.
1281
master_branch = self.get_master_branch()
1282
if master_branch:
1283
master_branch.pull(source)
1284
source = master_branch
1285
return super(BzrBranch5, self).pull(source, overwrite, stop_revision)
1286
1287
def get_bound_location(self):
1288
try:
1289
return self.control_files.get_utf8('bound').read()[:-1]
1290
except errors.NoSuchFile:
1291
return None
1292
1293
@needs_read_lock
1294
def get_master_branch(self):
1295
"""Return the branch we are bound to.
1296
1297
:return: Either a Branch, or None
1298
1299
This could memoise the branch, but if thats done
1300
it must be revalidated on each new lock.
1301
So for now we just don't memoise it.
1302
# RBC 20060304 review this decision.
1303
"""
1304
bound_loc = self.get_bound_location()
1305
if not bound_loc:
1306
return None
1307
try:
1308
return Branch.open(bound_loc)
1309
except (errors.NotBranchError, errors.ConnectionError), e:
1310
raise errors.BoundBranchConnectionFailure(
1311
self, bound_loc, e)
1312
1313
@needs_write_lock
1314
def set_bound_location(self, location):
1315
"""Set the target where this branch is bound to.
1316
1317
:param location: URL to the target branch
1318
"""
1319
if location:
1320
self.control_files.put_utf8('bound', location+'\n')
1321
else:
1322
try:
1323
self.control_files._transport.delete('bound')
1324
except NoSuchFile:
1325
return False
1326
return True
1327
1328
@needs_write_lock
1329
def bind(self, other):
1330
"""Bind the local branch the other branch.
1331
1332
:param other: The branch to bind to
1333
:type other: Branch
1334
"""
1335
# TODO: jam 20051230 Consider checking if the target is bound
1336
# It is debatable whether you should be able to bind to
1337
# a branch which is itself bound.
1338
# Committing is obviously forbidden,
1339
# but binding itself may not be.
1340
# Since we *have* to check at commit time, we don't
1341
# *need* to check here
1342
self.pull(other)
1343
1344
# we are now equal to or a suffix of other.
1345
1346
# Since we have 'pulled' from the remote location,
1347
# now we should try to pull in the opposite direction
1348
# in case the local tree has more revisions than the
1349
# remote one.
1350
# There may be a different check you could do here
1351
# rather than actually trying to install revisions remotely.
1352
# TODO: capture an exception which indicates the remote branch
1353
# is not writable.
1354
# If it is up-to-date, this probably should not be a failure
1355
1356
# lock other for write so the revision-history syncing cannot race
1357
other.lock_write()
1358
try:
1359
other.pull(self)
1360
# if this does not error, other now has the same last rev we do
1361
# it can only error if the pull from other was concurrent with
1362
# a commit to other from someone else.
1363
1364
# until we ditch revision-history, we need to sync them up:
1365
self.set_revision_history(other.revision_history())
1366
# now other and self are up to date with each other and have the
1367
# same revision-history.
1368
finally:
1369
other.unlock()
1370
1371
self.set_bound_location(other.base)
1372
1373
@needs_write_lock
1374
def unbind(self):
1375
"""If bound, unbind"""
1376
return self.set_bound_location(None)
1377
1378
@needs_write_lock
1379
def update(self):
1380
"""Synchronise this branch with the master branch if any.
1381
1382
:return: None or the last_revision that was pivoted out during the
1383
update.
1384
"""
1385
master = self.get_master_branch()
1386
if master is not None:
1387
old_tip = self.last_revision()
1388
self.pull(master, overwrite=True)
1389
if old_tip in self.repository.get_ancestry(self.last_revision()):
1390
return None
1391
return old_tip
1392
return None
1393
1394
1395
class BranchTestProviderAdapter(object):
1396
"""A tool to generate a suite testing multiple branch formats at once.
1397
1398
This is done by copying the test once for each transport and injecting
1399
the transport_server, transport_readonly_server, and branch_format
1400
classes into each copy. Each copy is also given a new id() to make it
1401
easy to identify.
1402
"""
1403
1404
def __init__(self, transport_server, transport_readonly_server, formats):
1405
self._transport_server = transport_server
1406
self._transport_readonly_server = transport_readonly_server
1407
self._formats = formats
1408
1409
def adapt(self, test):
1410
result = TestSuite()
1411
for branch_format, bzrdir_format in self._formats:
1412
new_test = deepcopy(test)
1413
new_test.transport_server = self._transport_server
1414
new_test.transport_readonly_server = self._transport_readonly_server
1415
new_test.bzrdir_format = bzrdir_format
1416
new_test.branch_format = branch_format
1417
def make_new_test_id():
1418
new_id = "%s(%s)" % (new_test.id(), branch_format.__class__.__name__)
1419
return lambda: new_id
1420
new_test.id = make_new_test_id()
1421
result.addTest(new_test)
1422
return result
1423
1424
1425
class BranchCheckResult(object):
1426
"""Results of checking branch consistency.
1427
1428
:see: Branch.check
1429
"""
1430
1431
def __init__(self, branch):
1432
self.branch = branch
1433
1434
def report_results(self, verbose):
1435
"""Report the check results via trace.note.
1436
1437
:param verbose: Requests more detailed display of what was checked,
1438
if any.
1439
"""
1440
note('checked branch %s format %s',
1441
self.branch.base,
1442
self.branch._format)
1443
1336
1444
1337
1445
######################################################################
1338
1446
# predicates
1339
1447
1340
1448
1341
def is_control_file(filename):
1342
## FIXME: better check
1343
filename = os.path.normpath(filename)
1344
while filename != '':
1345
head, tail = os.path.split(filename)
1346
## mutter('check %r for control file' % ((head, tail), ))
1347
if tail == bzrlib.BZRDIR:
1348
return True
1349
if filename == head:
1350
break
1351
filename = head
1352
return False
1353
1354
1355
1356
def gen_file_id(name):
1357
"""Return new file id.
1358
1359
This should probably generate proper UUIDs, but for the moment we
1360
cope with just randomness because running uuidgen every time is
1361
slow."""
1362
import re
1363
from binascii import hexlify
1364
from time import time
1365
1366
# get last component
1367
idx = name.rfind('/')
1368
if idx != -1:
1369
name = name[idx+1 : ]
1370
idx = name.rfind('\\')
1371
if idx != -1:
1372
name = name[idx+1 : ]
1373
1374
# make it not a hidden file
1375
name = name.lstrip('.')
1376
1377
# remove any wierd characters; we don't escape them but rather
1378
# just pull them out
1379
name = re.sub(r'[^\w.]', '', name)
1380
1381
s = hexlify(rand_bytes(8))
1382
return '-'.join((name, compact_date(time()), s))
1383
1384
1385
def gen_root_id():
1386
"""Return a new tree-root file id."""
1387
return gen_file_id('TREE_ROOT')
1388
1449
@deprecated_function(zero_eight)
1450
def is_control_file(*args, **kwargs):
1451
"""See bzrlib.workingtree.is_control_file."""
1452
return bzrlib.workingtree.is_control_file(*args, **kwargs)
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