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# Copyright (C) 2005 Canonical Ltd
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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from warnings import warn
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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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rename, splitpath, sha_file, appendpath,
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from bzrlib.errors import (BzrError, InvalidRevisionNumber, InvalidRevisionId,
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NoSuchRevision, HistoryMissing, NotBranchError,
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DivergedBranches, LockError, UnlistableStore,
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from bzrlib.textui import show_status
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from bzrlib.revision import Revision, validate_revision_id, is_ancestor
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from bzrlib.delta import compare_trees
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from bzrlib.tree import EmptyTree, RevisionTree
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from bzrlib.inventory import Inventory
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from bzrlib.weavestore import WeaveStore
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from bzrlib.store import copy_all, ImmutableStore
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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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## TODO: Maybe include checks for common corruption of newlines, etc?
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# TODO: Some operations like log might retrieve the same revisions
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# repeatedly to calculate deltas. We could perhaps have a weakref
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# cache in memory to make this faster. In general anything can be
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# cached in memory between lock and unlock operations.
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def find_branch(*ignored, **ignored_too):
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# XXX: leave this here for about one release, then remove it
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raise NotImplementedError('find_branch() is not supported anymore, '
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'please use one of the new branch constructors')
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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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while len(head) >= len(base):
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head, tail = os.path.split(head)
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raise NotBranchError("path %r is not within branch %r" % (rp, base))
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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. If there isn't one, raises NotBranchError.
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f = bzrlib.osutils.normalizepath(f)
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if not bzrlib.osutils.lexists(f):
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raise BzrError('%r does not exist' % f)
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if os.path.exists(os.path.join(f, bzrlib.BZRDIR)):
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head, tail = os.path.split(f)
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# reached the root, whatever that may be
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raise NotBranchError('%s is not in a branch' % orig_f)
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######################################################################
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class Branch(object):
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"""Branch holding a history of revisions.
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Base directory/url of the branch.
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def __init__(self, *ignored, **ignored_too):
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raise NotImplementedError('The Branch class is abstract')
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"""Open an existing branch, rooted at 'base' (url)"""
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if base and (base.startswith('http://') or base.startswith('https://')):
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from bzrlib.remotebranch import RemoteBranch
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return RemoteBranch(base, find_root=False)
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return LocalBranch(base, find_root=False)
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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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if url and (url.startswith('http://') or url.startswith('https://')):
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from bzrlib.remotebranch import RemoteBranch
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return RemoteBranch(url)
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return LocalBranch(url)
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def initialize(base):
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"""Create a new branch, rooted at 'base' (url)"""
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if base and (base.startswith('http://') or base.startswith('https://')):
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from bzrlib.remotebranch import RemoteBranch
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return RemoteBranch(base, init=True)
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return LocalBranch(base, init=True)
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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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class LocalBranch(Branch):
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"""A branch stored in the actual filesystem.
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Note that it's "local" in the context of the filesystem; it doesn't
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really matter if it's on an nfs/smb/afs/coda/... share, as long as
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it's writable, and can be accessed via the normal filesystem API.
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If _lock_mode is true, a positive count of the number of times the
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Lock object from bzrlib.lock.
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# We actually expect this class to be somewhat short-lived; part of its
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# purpose is to try to isolate what bits of the branch logic are tied to
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# filesystem access, so that in a later step, we can extricate them to
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# a separarte ("storage") class.
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_inventory_weave = 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 push_stores(self, branch_to):
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"""Copy the content of this branches store to branch_to."""
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if (self._branch_format != branch_to._branch_format
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or self._branch_format != 4):
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from bzrlib.fetch import greedy_fetch
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mutter("falling back to fetch logic to push between %s(%s) and %s(%s)",
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self, self._branch_format, branch_to, branch_to._branch_format)
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greedy_fetch(to_branch=branch_to, from_branch=self,
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revision=self.last_revision())
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store_pairs = ((self.text_store, branch_to.text_store),
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(self.inventory_store, branch_to.inventory_store),
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(self.revision_store, branch_to.revision_store))
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for from_store, to_store in store_pairs:
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copy_all(from_store, to_store)
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except UnlistableStore:
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raise UnlistableBranch(from_store)
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def __init__(self, base, init=False, find_root=True,
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relax_version_check=False):
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"""Create new branch object at a particular location.
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base -- Base directory for the branch. May be a file:// url.
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init -- If True, create new control files in a previously
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unversioned directory. If False, the branch must already
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find_root -- If true and init is false, find the root of the
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existing branch containing base.
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relax_version_check -- If true, the usual check for the branch
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version is not applied. This is intended only for
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upgrade/recovery type use; it's not guaranteed that
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all operations will work on old format branches.
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In the test suite, creation of new trees is tested using the
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`ScratchBranch` class.
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self.base = os.path.realpath(base)
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self.base = find_branch_root(base)
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if base.startswith("file://"):
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self.base = os.path.realpath(base)
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if not isdir(self.controlfilename('.')):
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raise NotBranchError('not a bzr branch: %s' % quotefn(base),
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['use "bzr init" to initialize a '
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self._check_format(relax_version_check)
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cfn = self.controlfilename
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if self._branch_format == 4:
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self.inventory_store = ImmutableStore(cfn('inventory-store'))
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self.text_store = ImmutableStore(cfn('text-store'))
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elif self._branch_format == 5:
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self.control_weaves = WeaveStore(cfn([]))
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self.weave_store = WeaveStore(cfn('weaves'))
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# FIXME: Unify with make_control_files
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self.control_weaves.put_empty_weave('inventory')
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self.control_weaves.put_empty_weave('ancestry')
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self.revision_store = ImmutableStore(cfn('revision-store'))
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return '%s(%r)' % (self.__class__.__name__, self.base)
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if self._lock_mode or self._lock:
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# XXX: This should show something every time, and be suitable for
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# headless operation and embedding
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warn("branch %r was not explicitly unlocked" % self)
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def lock_write(self):
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if self._lock_mode != 'w':
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raise LockError("can't upgrade to a write lock from %r" %
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self._lock_count += 1
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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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assert self._lock_mode in ('r', 'w'), \
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"invalid lock mode %r" % self._lock_mode
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self._lock_count += 1
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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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if not self._lock_mode:
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raise LockError('branch %r is not locked' % (self))
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if self._lock_count > 1:
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self._lock_count -= 1
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self._lock_mode = self._lock_count = None
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def abspath(self, name):
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"""Return absolute filename for something in the branch"""
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return os.path.join(self.base, name)
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def relpath(self, path):
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"""Return path relative to this branch of something inside it.
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Raises an error if path is not in this branch."""
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return _relpath(self.base, path)
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def controlfilename(self, file_or_path):
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"""Return location relative to branch."""
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if isinstance(file_or_path, basestring):
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file_or_path = [file_or_path]
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return os.path.join(self.base, bzrlib.BZRDIR, *file_or_path)
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def controlfile(self, file_or_path, mode='r'):
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"""Open a control file for this branch.
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There are two classes of file in the control directory: text
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and binary. binary files are untranslated byte streams. Text
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control files are stored with Unix newlines and in UTF-8, even
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if the platform or locale defaults are different.
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Controlfiles should almost never be opened in write mode but
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rather should be atomically copied and replaced using atomicfile.
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fn = self.controlfilename(file_or_path)
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if mode == 'rb' or mode == 'wb':
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return file(fn, mode)
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elif mode == 'r' or mode == 'w':
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# open in binary mode anyhow so there's no newline translation;
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# codecs uses line buffering by default; don't want that.
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return codecs.open(fn, mode + 'b', 'utf-8',
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raise BzrError("invalid controlfile mode %r" % mode)
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def _make_control(self):
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os.mkdir(self.controlfilename([]))
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self.controlfile('README', 'w').write(
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"This is a Bazaar-NG control directory.\n"
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"Do not change any files in this directory.\n")
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self.controlfile('branch-format', 'w').write(BZR_BRANCH_FORMAT_5)
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for d in ('text-store', 'revision-store',
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os.mkdir(self.controlfilename(d))
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for f in ('revision-history',
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self.controlfile(f, 'w').write('')
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mutter('created control directory in ' + self.base)
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# if we want per-tree root ids then this is the place to set
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# them; they're not needed for now and so ommitted for
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f = self.controlfile('inventory','w')
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bzrlib.xml5.serializer_v5.write_inventory(Inventory(), f)
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def _check_format(self, relax_version_check):
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"""Check this branch format is supported.
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The format level is stored, as an integer, in
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self._branch_format for code that needs to check it later.
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In the future, we might need different in-memory Branch
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classes to support downlevel branches. But not yet.
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fmt = self.controlfile('branch-format', 'r').read()
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if hasattr(e, 'errno'):
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if e.errno == errno.ENOENT:
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raise NotBranchError(self.base)
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if fmt == BZR_BRANCH_FORMAT_5:
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self._branch_format = 5
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elif fmt == BZR_BRANCH_FORMAT_4:
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self._branch_format = 4
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if (not relax_version_check
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and self._branch_format != 5):
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raise BzrError('sorry, branch format %r not supported' % fmt,
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['use a different bzr version',
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'or remove the .bzr directory and "bzr init" again'])
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def get_root_id(self):
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"""Return the id of this branches root"""
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inv = self.read_working_inventory()
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return inv.root.file_id
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def set_root_id(self, file_id):
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inv = self.read_working_inventory()
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orig_root_id = inv.root.file_id
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del inv._byid[inv.root.file_id]
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inv.root.file_id = file_id
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inv._byid[inv.root.file_id] = inv.root
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if entry.parent_id in (None, orig_root_id):
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entry.parent_id = inv.root.file_id
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self._write_inventory(inv)
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def read_working_inventory(self):
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"""Read the working inventory."""
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# ElementTree does its own conversion from UTF-8, so open in
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f = self.controlfile('inventory', 'rb')
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return bzrlib.xml5.serializer_v5.read_inventory(f)
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def _write_inventory(self, inv):
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"""Update the working inventory.
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That is to say, the inventory describing changes underway, that
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will be committed to the next revision.
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from bzrlib.atomicfile import AtomicFile
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f = AtomicFile(self.controlfilename('inventory'), 'wb')
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bzrlib.xml5.serializer_v5.write_inventory(inv, f)
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mutter('wrote working inventory')
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inventory = property(read_working_inventory, _write_inventory, None,
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"""Inventory for the working copy.""")
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def add(self, files, ids=None):
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"""Make files versioned.
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Note that the command line normally calls smart_add instead,
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which can automatically recurse.
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This puts the files in the Added state, so that they will be
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recorded by the next commit.
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List of paths to add, relative to the base of the tree.
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If set, use these instead of automatically generated ids.
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Must be the same length as the list of files, but may
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contain None for ids that are to be autogenerated.
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TODO: Perhaps have an option to add the ids even if the files do
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TODO: Perhaps yield the ids and paths as they're added.
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# TODO: Re-adding a file that is removed in the working copy
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# should probably put it back with the previous ID.
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if isinstance(files, basestring):
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assert(ids is None or isinstance(ids, basestring))
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ids = [None] * len(files)
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assert(len(ids) == len(files))
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inv = self.read_working_inventory()
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for f,file_id in zip(files, ids):
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if is_control_file(f):
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raise BzrError("cannot add control file %s" % quotefn(f))
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raise BzrError("cannot add top-level %r" % f)
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fullpath = os.path.normpath(self.abspath(f))
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kind = file_kind(fullpath)
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# maybe something better?
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raise BzrError('cannot add: not a regular file, symlink or directory: %s' % quotefn(f))
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if kind not in ('file', 'directory', 'symlink'):
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raise BzrError('cannot add: not a regular file, symlink or directory: %s' % quotefn(f))
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file_id = gen_file_id(f)
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inv.add_path(f, kind=kind, file_id=file_id)
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mutter("add file %s file_id:{%s} kind=%r" % (f, file_id, kind))
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self._write_inventory(inv)
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def print_file(self, file, revno):
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"""Print `file` to stdout."""
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tree = self.revision_tree(self.get_rev_id(revno))
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# use inventory as it was in that revision
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file_id = tree.inventory.path2id(file)
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raise BzrError("%r is not present in revision %s" % (file, revno))
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tree.print_file(file_id)
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def remove(self, files, verbose=False):
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"""Mark nominated files for removal from the inventory.
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This does not remove their text. This does not run on
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TODO: Refuse to remove modified files unless --force is given?
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TODO: Do something useful with directories.
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TODO: Should this remove the text or not? Tough call; not
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removing may be useful and the user can just use use rm, and
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is the opposite of add. Removing it is consistent with most
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other tools. Maybe an option.
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## TODO: Normalize names
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## TODO: Remove nested loops; better scalability
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if isinstance(files, basestring):
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tree = self.working_tree()
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# do this before any modifications
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raise BzrError("cannot remove unversioned file %s" % quotefn(f))
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mutter("remove inventory entry %s {%s}" % (quotefn(f), fid))
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# having remove it, it must be either ignored or unknown
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if tree.is_ignored(f):
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show_status(new_status, inv[fid].kind, quotefn(f))
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self._write_inventory(inv)
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# FIXME: this doesn't need to be a branch method
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def set_inventory(self, new_inventory_list):
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from bzrlib.inventory import Inventory, InventoryEntry
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inv = Inventory(self.get_root_id())
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for path, file_id, parent, kind in new_inventory_list:
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name = os.path.basename(path)
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inv.add(InventoryEntry(file_id, name, kind, parent))
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self._write_inventory(inv)
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"""Return all unknown files.
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These are files in the working directory that are not versioned or
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control files or ignored.
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>>> b = ScratchBranch(files=['foo', 'foo~'])
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>>> list(b.unknowns())
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>>> list(b.unknowns())
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>>> list(b.unknowns())
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return self.working_tree().unknowns()
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def append_revision(self, *revision_ids):
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from bzrlib.atomicfile import AtomicFile
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for revision_id in revision_ids:
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mutter("add {%s} to revision-history" % revision_id)
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rev_history = self.revision_history()
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rev_history.extend(revision_ids)
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f = AtomicFile(self.controlfilename('revision-history'))
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for rev_id in rev_history:
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def has_revision(self, revision_id):
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"""True if this branch has a copy of the revision.
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This does not necessarily imply the revision is merge
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or on the mainline."""
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return (revision_id is None
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or revision_id in self.revision_store)
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def get_revision_xml_file(self, revision_id):
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"""Return XML file object for revision object."""
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if not revision_id or not isinstance(revision_id, basestring):
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raise InvalidRevisionId(revision_id)
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return self.revision_store[revision_id]
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except (IndexError, KeyError):
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raise bzrlib.errors.NoSuchRevision(self, revision_id)
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get_revision_xml = get_revision_xml_file
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def get_revision_xml(self, revision_id):
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return self.get_revision_xml_file(revision_id).read()
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def get_revision(self, revision_id):
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"""Return the Revision object for a named revision"""
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xml_file = self.get_revision_xml_file(revision_id)
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r = bzrlib.xml5.serializer_v5.read_revision(xml_file)
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except SyntaxError, e:
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raise bzrlib.errors.BzrError('failed to unpack revision_xml',
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assert r.revision_id == revision_id
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def get_revision_delta(self, revno):
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"""Return the delta for one revision.
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The delta is relative to its mainline predecessor, or the
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empty tree for revision 1.
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assert isinstance(revno, int)
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rh = self.revision_history()
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if not (1 <= revno <= len(rh)):
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raise InvalidRevisionNumber(revno)
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# revno is 1-based; list is 0-based
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new_tree = self.revision_tree(rh[revno-1])
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old_tree = EmptyTree()
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old_tree = self.revision_tree(rh[revno-2])
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return compare_trees(old_tree, new_tree)
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def get_revision_sha1(self, revision_id):
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"""Hash the stored value of a revision, and return it."""
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# In the future, revision entries will be signed. At that
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# point, it is probably best *not* to include the signature
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# in the revision hash. Because that lets you re-sign
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# the revision, (add signatures/remove signatures) and still
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# have all hash pointers stay consistent.
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# But for now, just hash the contents.
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return bzrlib.osutils.sha_file(self.get_revision_xml_file(revision_id))
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def _get_ancestry_weave(self):
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return self.control_weaves.get_weave('ancestry')
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def get_ancestry(self, revision_id):
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"""Return a list of revision-ids integrated by a revision.
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if revision_id is None:
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w = self._get_ancestry_weave()
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return [None] + [l[:-1] for l in w.get_iter(w.lookup(revision_id))]
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def get_inventory_weave(self):
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return self.control_weaves.get_weave('inventory')
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def get_inventory(self, revision_id):
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"""Get Inventory object by hash."""
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xml = self.get_inventory_xml(revision_id)
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return bzrlib.xml5.serializer_v5.read_inventory_from_string(xml)
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def get_inventory_xml(self, revision_id):
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"""Get inventory XML as a file object."""
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assert isinstance(revision_id, basestring), type(revision_id)
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iw = self.get_inventory_weave()
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return iw.get_text(iw.lookup(revision_id))
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raise bzrlib.errors.HistoryMissing(self, 'inventory', revision_id)
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def get_inventory_sha1(self, revision_id):
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"""Return the sha1 hash of the inventory entry
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return self.get_revision(revision_id).inventory_sha1
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def get_revision_inventory(self, revision_id):
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"""Return inventory of a past revision."""
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# TODO: Unify this with get_inventory()
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# bzr 0.0.6 and later imposes the constraint that the inventory_id
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# must be the same as its revision, so this is trivial.
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if revision_id == None:
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return Inventory(self.get_root_id())
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return self.get_inventory(revision_id)
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def revision_history(self):
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"""Return sequence of revision hashes on to this branch."""
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return [l.rstrip('\r\n') for l in
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self.controlfile('revision-history', 'r').readlines()]
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def common_ancestor(self, other, self_revno=None, other_revno=None):
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>>> from bzrlib.commit import commit
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>>> sb = ScratchBranch(files=['foo', 'foo~'])
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>>> sb.common_ancestor(sb) == (None, None)
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>>> commit(sb, "Committing first revision", verbose=False)
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>>> sb.common_ancestor(sb)[0]
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>>> clone = sb.clone()
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>>> commit(sb, "Committing second revision", verbose=False)
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>>> sb.common_ancestor(sb)[0]
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>>> sb.common_ancestor(clone)[0]
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>>> commit(clone, "Committing divergent second revision",
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>>> sb.common_ancestor(clone)[0]
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>>> sb.common_ancestor(clone) == clone.common_ancestor(sb)
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>>> sb.common_ancestor(sb) != clone.common_ancestor(clone)
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>>> clone2 = sb.clone()
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>>> sb.common_ancestor(clone2)[0]
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>>> sb.common_ancestor(clone2, self_revno=1)[0]
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>>> sb.common_ancestor(clone2, other_revno=1)[0]
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my_history = self.revision_history()
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other_history = other.revision_history()
801
if self_revno is None:
802
self_revno = len(my_history)
803
if other_revno is None:
804
other_revno = len(other_history)
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indices = range(min((self_revno, other_revno)))
808
if my_history[r] == other_history[r]:
809
return r+1, my_history[r]
814
"""Return current revision number for this branch.
816
That is equivalent to the number of revisions committed to
819
return len(self.revision_history())
822
def last_revision(self):
823
"""Return last patch hash, or None if no history.
825
ph = self.revision_history()
832
def missing_revisions(self, other, stop_revision=None, diverged_ok=False):
833
"""Return a list of new revisions that would perfectly fit.
835
If self and other have not diverged, return a list of the revisions
836
present in other, but missing from self.
838
>>> from bzrlib.commit import commit
839
>>> bzrlib.trace.silent = True
840
>>> br1 = ScratchBranch()
841
>>> br2 = ScratchBranch()
842
>>> br1.missing_revisions(br2)
844
>>> commit(br2, "lala!", rev_id="REVISION-ID-1")
845
>>> br1.missing_revisions(br2)
847
>>> br2.missing_revisions(br1)
849
>>> commit(br1, "lala!", rev_id="REVISION-ID-1")
850
>>> br1.missing_revisions(br2)
852
>>> commit(br2, "lala!", rev_id="REVISION-ID-2A")
853
>>> br1.missing_revisions(br2)
855
>>> commit(br1, "lala!", rev_id="REVISION-ID-2B")
856
>>> br1.missing_revisions(br2)
857
Traceback (most recent call last):
858
DivergedBranches: These branches have diverged.
860
# FIXME: If the branches have diverged, but the latest
861
# revision in this branch is completely merged into the other,
862
# then we should still be able to pull.
863
self_history = self.revision_history()
864
self_len = len(self_history)
865
other_history = other.revision_history()
866
other_len = len(other_history)
867
common_index = min(self_len, other_len) -1
868
if common_index >= 0 and \
869
self_history[common_index] != other_history[common_index]:
870
raise DivergedBranches(self, other)
872
if stop_revision is None:
873
stop_revision = other_len
875
assert isinstance(stop_revision, int)
876
if stop_revision > other_len:
877
raise bzrlib.errors.NoSuchRevision(self, stop_revision)
878
return other_history[self_len:stop_revision]
880
def update_revisions(self, other, stop_revision=None):
881
"""Pull in new perfect-fit revisions."""
882
from bzrlib.fetch import greedy_fetch
883
from bzrlib.revision import get_intervening_revisions
884
if stop_revision is None:
885
stop_revision = other.last_revision()
886
greedy_fetch(to_branch=self, from_branch=other,
887
revision=stop_revision)
888
pullable_revs = self.missing_revisions(
889
other, other.revision_id_to_revno(stop_revision))
891
greedy_fetch(to_branch=self,
893
revision=pullable_revs[-1])
894
self.append_revision(*pullable_revs)
897
def commit(self, *args, **kw):
898
from bzrlib.commit import Commit
899
Commit().commit(self, *args, **kw)
901
def revision_id_to_revno(self, revision_id):
902
"""Given a revision id, return its revno"""
903
if revision_id is None:
905
history = self.revision_history()
907
return history.index(revision_id) + 1
909
raise bzrlib.errors.NoSuchRevision(self, revision_id)
911
def get_rev_id(self, revno, history=None):
912
"""Find the revision id of the specified revno."""
916
history = self.revision_history()
917
elif revno <= 0 or revno > len(history):
918
raise bzrlib.errors.NoSuchRevision(self, revno)
919
return history[revno - 1]
921
def revision_tree(self, revision_id):
922
"""Return Tree for a revision on this branch.
924
`revision_id` may be None for the null revision, in which case
925
an `EmptyTree` is returned."""
926
# TODO: refactor this to use an existing revision object
927
# so we don't need to read it in twice.
928
if revision_id == None:
931
inv = self.get_revision_inventory(revision_id)
932
return RevisionTree(self.weave_store, inv, revision_id)
935
def working_tree(self):
936
"""Return a `Tree` for the working copy."""
937
from bzrlib.workingtree import WorkingTree
938
return WorkingTree(self.base, self.read_working_inventory())
941
def basis_tree(self):
942
"""Return `Tree` object for last revision.
944
If there are no revisions yet, return an `EmptyTree`.
946
return self.revision_tree(self.last_revision())
949
def rename_one(self, from_rel, to_rel):
952
This can change the directory or the filename or both.
956
tree = self.working_tree()
958
if not tree.has_filename(from_rel):
959
raise BzrError("can't rename: old working file %r does not exist" % from_rel)
960
if tree.has_filename(to_rel):
961
raise BzrError("can't rename: new working file %r already exists" % to_rel)
963
file_id = inv.path2id(from_rel)
965
raise BzrError("can't rename: old name %r is not versioned" % from_rel)
967
if inv.path2id(to_rel):
968
raise BzrError("can't rename: new name %r is already versioned" % to_rel)
970
to_dir, to_tail = os.path.split(to_rel)
971
to_dir_id = inv.path2id(to_dir)
972
if to_dir_id == None and to_dir != '':
973
raise BzrError("can't determine destination directory id for %r" % to_dir)
975
mutter("rename_one:")
976
mutter(" file_id {%s}" % file_id)
977
mutter(" from_rel %r" % from_rel)
978
mutter(" to_rel %r" % to_rel)
979
mutter(" to_dir %r" % to_dir)
980
mutter(" to_dir_id {%s}" % to_dir_id)
982
inv.rename(file_id, to_dir_id, to_tail)
984
from_abs = self.abspath(from_rel)
985
to_abs = self.abspath(to_rel)
987
rename(from_abs, to_abs)
989
raise BzrError("failed to rename %r to %r: %s"
990
% (from_abs, to_abs, e[1]),
991
["rename rolled back"])
993
self._write_inventory(inv)
998
def move(self, from_paths, to_name):
1001
to_name must exist as a versioned directory.
1003
If to_name exists and is a directory, the files are moved into
1004
it, keeping their old names. If it is a directory,
1006
Note that to_name is only the last component of the new name;
1007
this doesn't change the directory.
1009
This returns a list of (from_path, to_path) pairs for each
1010
entry that is moved.
1015
## TODO: Option to move IDs only
1016
assert not isinstance(from_paths, basestring)
1017
tree = self.working_tree()
1018
inv = tree.inventory
1019
to_abs = self.abspath(to_name)
1020
if not isdir(to_abs):
1021
raise BzrError("destination %r is not a directory" % to_abs)
1022
if not tree.has_filename(to_name):
1023
raise BzrError("destination %r not in working directory" % to_abs)
1024
to_dir_id = inv.path2id(to_name)
1025
if to_dir_id == None and to_name != '':
1026
raise BzrError("destination %r is not a versioned directory" % to_name)
1027
to_dir_ie = inv[to_dir_id]
1028
if to_dir_ie.kind not in ('directory', 'root_directory'):
1029
raise BzrError("destination %r is not a directory" % to_abs)
1031
to_idpath = inv.get_idpath(to_dir_id)
1033
for f in from_paths:
1034
if not tree.has_filename(f):
1035
raise BzrError("%r does not exist in working tree" % f)
1036
f_id = inv.path2id(f)
1038
raise BzrError("%r is not versioned" % f)
1039
name_tail = splitpath(f)[-1]
1040
dest_path = appendpath(to_name, name_tail)
1041
if tree.has_filename(dest_path):
1042
raise BzrError("destination %r already exists" % dest_path)
1043
if f_id in to_idpath:
1044
raise BzrError("can't move %r to a subdirectory of itself" % f)
1046
# OK, so there's a race here, it's possible that someone will
1047
# create a file in this interval and then the rename might be
1048
# left half-done. But we should have caught most problems.
1050
for f in from_paths:
1051
name_tail = splitpath(f)[-1]
1052
dest_path = appendpath(to_name, name_tail)
1053
result.append((f, dest_path))
1054
inv.rename(inv.path2id(f), to_dir_id, name_tail)
1056
rename(self.abspath(f), self.abspath(dest_path))
1058
raise BzrError("failed to rename %r to %r: %s" % (f, dest_path, e[1]),
1059
["rename rolled back"])
1061
self._write_inventory(inv)
1068
def revert(self, filenames, old_tree=None, backups=True):
1069
"""Restore selected files to the versions from a previous tree.
1072
If true (default) backups are made of files before
1075
from bzrlib.errors import NotVersionedError, BzrError
1076
from bzrlib.atomicfile import AtomicFile
1077
from bzrlib.osutils import backup_file
1079
inv = self.read_working_inventory()
1080
if old_tree is None:
1081
old_tree = self.basis_tree()
1082
old_inv = old_tree.inventory
1085
for fn in filenames:
1086
file_id = inv.path2id(fn)
1088
raise NotVersionedError("not a versioned file", fn)
1089
if not old_inv.has_id(file_id):
1090
raise BzrError("file not present in old tree", fn, file_id)
1091
nids.append((fn, file_id))
1093
# TODO: Rename back if it was previously at a different location
1095
# TODO: If given a directory, restore the entire contents from
1096
# the previous version.
1098
# TODO: Make a backup to a temporary file.
1100
# TODO: If the file previously didn't exist, delete it?
1101
for fn, file_id in nids:
1104
f = AtomicFile(fn, 'wb')
1106
f.write(old_tree.get_file(file_id).read())
1112
def pending_merges(self):
1113
"""Return a list of pending merges.
1115
These are revisions that have been merged into the working
1116
directory but not yet committed.
1118
cfn = self.controlfilename('pending-merges')
1119
if not os.path.exists(cfn):
1122
for l in self.controlfile('pending-merges', 'r').readlines():
1123
p.append(l.rstrip('\n'))
1127
def add_pending_merge(self, revision_id):
1128
validate_revision_id(revision_id)
1129
# TODO: Perhaps should check at this point that the
1130
# history of the revision is actually present?
1131
p = self.pending_merges()
1132
if revision_id in p:
1134
p.append(revision_id)
1135
self.set_pending_merges(p)
1138
def set_pending_merges(self, rev_list):
1139
from bzrlib.atomicfile import AtomicFile
1142
f = AtomicFile(self.controlfilename('pending-merges'))
1153
def get_parent(self):
1154
"""Return the parent location of the branch.
1156
This is the default location for push/pull/missing. The usual
1157
pattern is that the user can override it by specifying a
1161
_locs = ['parent', 'pull', 'x-pull']
1164
return self.controlfile(l, 'r').read().strip('\n')
1166
if e.errno != errno.ENOENT:
1171
def set_parent(self, url):
1172
# TODO: Maybe delete old location files?
1173
from bzrlib.atomicfile import AtomicFile
1176
f = AtomicFile(self.controlfilename('parent'))
1185
def check_revno(self, revno):
1187
Check whether a revno corresponds to any revision.
1188
Zero (the NULL revision) is considered valid.
1191
self.check_real_revno(revno)
1193
def check_real_revno(self, revno):
1195
Check whether a revno corresponds to a real revision.
1196
Zero (the NULL revision) is considered invalid
1198
if revno < 1 or revno > self.revno():
1199
raise InvalidRevisionNumber(revno)
1205
class ScratchBranch(LocalBranch):
1206
"""Special test class: a branch that cleans up after itself.
1208
>>> b = ScratchBranch()
1216
def __init__(self, files=[], dirs=[], base=None):
1217
"""Make a test branch.
1219
This creates a temporary directory and runs init-tree in it.
1221
If any files are listed, they are created in the working copy.
1223
from tempfile import mkdtemp
1228
LocalBranch.__init__(self, base, init=init)
1230
os.mkdir(self.abspath(d))
1233
file(os.path.join(self.base, f), 'w').write('content of %s' % f)
1238
>>> orig = ScratchBranch(files=["file1", "file2"])
1239
>>> clone = orig.clone()
1240
>>> if os.name != 'nt':
1241
... os.path.samefile(orig.base, clone.base)
1243
... orig.base == clone.base
1246
>>> os.path.isfile(os.path.join(clone.base, "file1"))
1249
from shutil import copytree
1250
from tempfile import mkdtemp
1253
copytree(self.base, base, symlinks=True)
1254
return ScratchBranch(base=base)
1260
"""Destroy the test branch, removing the scratch directory."""
1261
from shutil import rmtree
1264
mutter("delete ScratchBranch %s" % self.base)
1267
# Work around for shutil.rmtree failing on Windows when
1268
# readonly files are encountered
1269
mutter("hit exception in destroying ScratchBranch: %s" % e)
1270
for root, dirs, files in os.walk(self.base, topdown=False):
1272
os.chmod(os.path.join(root, name), 0700)
1278
######################################################################
1282
def is_control_file(filename):
1283
## FIXME: better check
1284
filename = os.path.normpath(filename)
1285
while filename != '':
1286
head, tail = os.path.split(filename)
1287
## mutter('check %r for control file' % ((head, tail), ))
1288
if tail == bzrlib.BZRDIR:
1290
if filename == head:
1297
def gen_file_id(name):
1298
"""Return new file id.
1300
This should probably generate proper UUIDs, but for the moment we
1301
cope with just randomness because running uuidgen every time is
1304
from binascii import hexlify
1305
from time import time
1307
# get last component
1308
idx = name.rfind('/')
1310
name = name[idx+1 : ]
1311
idx = name.rfind('\\')
1313
name = name[idx+1 : ]
1315
# make it not a hidden file
1316
name = name.lstrip('.')
1318
# remove any wierd characters; we don't escape them but rather
1319
# just pull them out
1320
name = re.sub(r'[^\w.]', '', name)
1322
s = hexlify(rand_bytes(8))
1323
return '-'.join((name, compact_date(time()), s))
1327
"""Return a new tree-root file id."""
1328
return gen_file_id('TREE_ROOT')
1331
def copy_branch(branch_from, to_location, revision=None, basis_branch=None):
1332
"""Copy branch_from into the existing directory to_location.
1335
If not None, only revisions up to this point will be copied.
1336
The head of the new branch will be that revision. Must be a
1340
The name of a local directory that exists but is empty.
1343
The revision to copy up to
1346
A local branch to copy revisions from, related to branch_from
1348
# TODO: This could be done *much* more efficiently by just copying
1349
# all the whole weaves and revisions, rather than getting one
1350
# revision at a time.
1351
from bzrlib.merge import merge
1353
assert isinstance(branch_from, Branch)
1354
assert isinstance(to_location, basestring)
1356
br_to = Branch.initialize(to_location)
1357
mutter("copy branch from %s to %s", branch_from, br_to)
1358
if basis_branch is not None:
1359
basis_branch.push_stores(br_to)
1360
br_to.set_root_id(branch_from.get_root_id())
1361
if revision is None:
1362
revision = branch_from.last_revision()
1363
br_to.update_revisions(branch_from, stop_revision=revision)
1364
merge((to_location, -1), (to_location, 0), this_dir=to_location,
1365
check_clean=False, ignore_zero=True)
1366
br_to.set_parent(branch_from.base)