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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 cStringIO import StringIO
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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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UnlistableBranch, NoSuchFile)
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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.store import copy_all
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from bzrlib.store.compressed_text import CompressedTextStore
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from bzrlib.store.text import TextStore
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from bzrlib.store.weave import WeaveStore
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from bzrlib.transport import Transport, get_transport
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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(t):
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"""Find the branch root enclosing the transport's base.
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t is a Transport object.
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It is not necessary that the base of t 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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if t.has(bzrlib.BZRDIR):
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new_t = t.clone('..')
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if new_t.base == t.base:
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# reached the root, whatever that may be
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raise NotBranchError('%s is not in a branch' % orig_base)
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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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def open_downlevel(base):
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"""Open a branch which may be of an old format.
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Only local branches are supported."""
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return _Branch(base, relax_version_check=True)
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"""Open an existing branch, rooted at 'base' (url)"""
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t = get_transport(base)
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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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t = get_transport(url)
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t = find_branch_root(t)
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def initialize(base):
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"""Create a new branch, rooted at 'base' (url)"""
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t = get_transport(base)
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return _Branch(t, 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 _Branch(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, transport, init=False,
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relax_version_check=False):
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"""Create new branch object at a particular location.
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transport -- A Transport object, defining how to access files.
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(If a string, transport.transport() will be used to
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create a Transport object)
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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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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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assert isinstance(transport, Transport)
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self._transport = transport
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self._check_format(relax_version_check)
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def get_store(name, compressed=True):
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relpath = self._rel_controlfilename(name)
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store = CompressedTextStore(self._transport.clone(relpath))
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store = TextStore(self._transport.clone(relpath))
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if self._transport.should_cache():
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from meta_store import CachedStore
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cache_path = os.path.join(self.cache_root, name)
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store = CachedStore(store, cache_path)
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relpath = self._rel_controlfilename(name)
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ws = WeaveStore(self._transport.clone(relpath))
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if self._transport.should_cache():
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ws.enable_cache = True
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if self._branch_format == 4:
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self.inventory_store = get_store('inventory-store')
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self.text_store = get_store('text-store')
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self.revision_store = get_store('revision-store')
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elif self._branch_format == 5:
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self.control_weaves = get_weave([])
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self.weave_store = get_weave('weaves')
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self.revision_store = get_store('revision-store', compressed=False)
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return '%s(%r)' % (self.__class__.__name__, self._transport.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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# TODO: It might be best to do this somewhere else,
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# but it is nice for a Branch object to automatically
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# cache it's information.
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# Alternatively, we could have the Transport objects cache requests
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# See the earlier discussion about how major objects (like Branch)
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# should never expect their __del__ function to run.
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if hasattr(self, 'cache_root') and self.cache_root is not None:
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shutil.rmtree(self.cache_root)
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self.cache_root = None
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return self._transport.base
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base = property(_get_base)
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def lock_write(self):
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# TODO: Upgrade locking to support using a Transport,
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# and potentially a remote locking protocol
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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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self._lock = self._transport.lock_write(
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self._rel_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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self._lock = self._transport.lock_read(
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self._rel_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 self._transport.abspath(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 self._transport.relpath(path)
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def _rel_controlfilename(self, file_or_path):
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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 [bzrlib.BZRDIR] + file_or_path
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def controlfilename(self, file_or_path):
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"""Return location relative to branch."""
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return self._transport.abspath(self._rel_controlfilename(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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relpath = self._rel_controlfilename(file_or_path)
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#TODO: codecs.open() buffers linewise, so it was overloaded with
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# a much larger buffer, do we need to do the same for getreader/getwriter?
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return self._transport.get(relpath)
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raise BzrError("Branch.controlfile(mode='wb') is not supported, use put_controlfiles")
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return codecs.getreader('utf-8')(self._transport.get(relpath), errors='replace')
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raise BzrError("Branch.controlfile(mode='w') is not supported, use put_controlfiles")
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raise BzrError("invalid controlfile mode %r" % mode)
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def put_controlfile(self, path, f, encode=True):
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"""Write an entry as a controlfile.
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:param path: The path to put the file, relative to the .bzr control
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:param f: A file-like or string object whose contents should be copied.
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:param encode: If true, encode the contents as utf-8
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self.put_controlfiles([(path, f)], encode=encode)
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def put_controlfiles(self, files, encode=True):
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"""Write several entries as controlfiles.
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:param files: A list of [(path, file)] pairs, where the path is the directory
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underneath the bzr control directory
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:param encode: If true, encode the contents as utf-8
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for path, f in files:
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if isinstance(f, basestring):
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f = f.encode('utf-8', 'replace')
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f = codecs.getwriter('utf-8')(f, errors='replace')
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path = self._rel_controlfilename(path)
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ctrl_files.append((path, f))
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self._transport.put_multi(ctrl_files)
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def _make_control(self):
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from bzrlib.inventory import Inventory
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from bzrlib.weavefile import write_weave_v5
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from bzrlib.weave import Weave
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# Create an empty inventory
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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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bzrlib.xml5.serializer_v5.write_inventory(Inventory(), sio)
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empty_inv = sio.getvalue()
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bzrlib.weavefile.write_weave_v5(Weave(), sio)
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empty_weave = sio.getvalue()
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dirs = [[], 'revision-store', 'weaves']
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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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('branch-format', BZR_BRANCH_FORMAT_5),
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('revision-history', ''),
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('pending-merges', ''),
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('inventory', empty_inv),
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('inventory.weave', empty_weave),
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('ancestry.weave', empty_weave)
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cfn = self._rel_controlfilename
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self._transport.mkdir_multi([cfn(d) for d in dirs])
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self.put_controlfiles(files)
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mutter('created control directory in ' + self._transport.base)
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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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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'
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' 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 cStringIO import StringIO
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bzrlib.xml5.serializer_v5.write_inventory(inv, sio)
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# Transport handles atomicity
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self.put_controlfile('inventory', sio)
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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 or directory: %s' % quotefn(f))
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if kind != 'file' and kind != 'directory':
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raise BzrError('cannot add: not a regular file or directory: %s' % quotefn(f))
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file_id = gen_file_id(f)
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inv.add_path(f, kind=kind, file_id=file_id)
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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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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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self.put_controlfile('revision-history', '\n'.join(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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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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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()
812
# bzr 0.0.6 and later imposes the constraint that the inventory_id
813
# must be the same as its revision, so this is trivial.
814
if revision_id == None:
815
return Inventory(self.get_root_id())
817
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."""
824
return [l.rstrip('\r\n') for l in
825
self.controlfile('revision-history', 'r').readlines()]
830
def common_ancestor(self, other, self_revno=None, other_revno=None):
832
>>> from bzrlib.commit import commit
833
>>> sb = ScratchBranch(files=['foo', 'foo~'])
834
>>> sb.common_ancestor(sb) == (None, None)
836
>>> commit(sb, "Committing first revision", verbose=False)
837
>>> sb.common_ancestor(sb)[0]
839
>>> clone = sb.clone()
840
>>> commit(sb, "Committing second revision", verbose=False)
841
>>> sb.common_ancestor(sb)[0]
843
>>> sb.common_ancestor(clone)[0]
845
>>> commit(clone, "Committing divergent second revision",
847
>>> sb.common_ancestor(clone)[0]
849
>>> sb.common_ancestor(clone) == clone.common_ancestor(sb)
851
>>> sb.common_ancestor(sb) != clone.common_ancestor(clone)
853
>>> clone2 = sb.clone()
854
>>> sb.common_ancestor(clone2)[0]
856
>>> sb.common_ancestor(clone2, self_revno=1)[0]
858
>>> sb.common_ancestor(clone2, other_revno=1)[0]
861
my_history = self.revision_history()
862
other_history = other.revision_history()
863
if self_revno is None:
864
self_revno = len(my_history)
865
if other_revno is None:
866
other_revno = len(other_history)
867
indices = range(min((self_revno, other_revno)))
870
if my_history[r] == other_history[r]:
871
return r+1, my_history[r]
876
"""Return current revision number for this branch.
878
That is equivalent to the number of revisions committed to
881
return len(self.revision_history())
884
def last_revision(self):
885
"""Return last patch hash, or None if no history.
887
ph = self.revision_history()
894
def missing_revisions(self, other, stop_revision=None, diverged_ok=False):
895
"""Return a list of new revisions that would perfectly fit.
897
If self and other have not diverged, return a list of the revisions
898
present in other, but missing from self.
900
>>> from bzrlib.commit import commit
901
>>> bzrlib.trace.silent = True
902
>>> br1 = ScratchBranch()
903
>>> br2 = ScratchBranch()
904
>>> br1.missing_revisions(br2)
906
>>> commit(br2, "lala!", rev_id="REVISION-ID-1")
907
>>> br1.missing_revisions(br2)
909
>>> br2.missing_revisions(br1)
911
>>> commit(br1, "lala!", rev_id="REVISION-ID-1")
912
>>> br1.missing_revisions(br2)
914
>>> commit(br2, "lala!", rev_id="REVISION-ID-2A")
915
>>> br1.missing_revisions(br2)
917
>>> commit(br1, "lala!", rev_id="REVISION-ID-2B")
918
>>> br1.missing_revisions(br2)
919
Traceback (most recent call last):
920
DivergedBranches: These branches have diverged.
922
# FIXME: If the branches have diverged, but the latest
923
# revision in this branch is completely merged into the other,
924
# then we should still be able to pull.
925
self_history = self.revision_history()
926
self_len = len(self_history)
927
other_history = other.revision_history()
928
other_len = len(other_history)
929
common_index = min(self_len, other_len) -1
930
if common_index >= 0 and \
931
self_history[common_index] != other_history[common_index]:
932
raise DivergedBranches(self, other)
934
if stop_revision is None:
935
stop_revision = other_len
937
assert isinstance(stop_revision, int)
938
if stop_revision > other_len:
939
raise bzrlib.errors.NoSuchRevision(self, stop_revision)
940
return other_history[self_len:stop_revision]
942
def update_revisions(self, other, stop_revision=None):
943
"""Pull in new perfect-fit revisions."""
944
from bzrlib.fetch import greedy_fetch
945
from bzrlib.revision import get_intervening_revisions
946
if stop_revision is None:
947
stop_revision = other.last_revision()
948
greedy_fetch(to_branch=self, from_branch=other,
949
revision=stop_revision)
950
pullable_revs = self.missing_revisions(
951
other, other.revision_id_to_revno(stop_revision))
953
greedy_fetch(to_branch=self,
955
revision=pullable_revs[-1])
956
self.append_revision(*pullable_revs)
959
def commit(self, *args, **kw):
960
from bzrlib.commit import Commit
961
Commit().commit(self, *args, **kw)
963
def revision_id_to_revno(self, revision_id):
964
"""Given a revision id, return its revno"""
965
if revision_id is None:
967
history = self.revision_history()
969
return history.index(revision_id) + 1
971
raise bzrlib.errors.NoSuchRevision(self, revision_id)
973
def get_rev_id(self, revno, history=None):
974
"""Find the revision id of the specified revno."""
978
history = self.revision_history()
979
elif revno <= 0 or revno > len(history):
980
raise bzrlib.errors.NoSuchRevision(self, revno)
981
return history[revno - 1]
983
def revision_tree(self, revision_id):
984
"""Return Tree for a revision on this branch.
986
`revision_id` may be None for the null revision, in which case
987
an `EmptyTree` is returned."""
988
# TODO: refactor this to use an existing revision object
989
# so we don't need to read it in twice.
990
if revision_id == None:
993
inv = self.get_revision_inventory(revision_id)
994
return RevisionTree(self.weave_store, inv, revision_id)
997
def working_tree(self):
998
"""Return a `Tree` for the working copy."""
999
from bzrlib.workingtree import WorkingTree
1000
# TODO: In the future, WorkingTree should utilize Transport
1001
return WorkingTree(self._transport.base, self.read_working_inventory())
1004
def basis_tree(self):
1005
"""Return `Tree` object for last revision.
1007
If there are no revisions yet, return an `EmptyTree`.
1009
return self.revision_tree(self.last_revision())
1012
def rename_one(self, from_rel, to_rel):
1015
This can change the directory or the filename or both.
1019
tree = self.working_tree()
1020
inv = tree.inventory
1021
if not tree.has_filename(from_rel):
1022
raise BzrError("can't rename: old working file %r does not exist" % from_rel)
1023
if tree.has_filename(to_rel):
1024
raise BzrError("can't rename: new working file %r already exists" % to_rel)
1026
file_id = inv.path2id(from_rel)
1028
raise BzrError("can't rename: old name %r is not versioned" % from_rel)
1030
if inv.path2id(to_rel):
1031
raise BzrError("can't rename: new name %r is already versioned" % to_rel)
1033
to_dir, to_tail = os.path.split(to_rel)
1034
to_dir_id = inv.path2id(to_dir)
1035
if to_dir_id == None and to_dir != '':
1036
raise BzrError("can't determine destination directory id for %r" % to_dir)
1038
mutter("rename_one:")
1039
mutter(" file_id {%s}" % file_id)
1040
mutter(" from_rel %r" % from_rel)
1041
mutter(" to_rel %r" % to_rel)
1042
mutter(" to_dir %r" % to_dir)
1043
mutter(" to_dir_id {%s}" % to_dir_id)
1045
inv.rename(file_id, to_dir_id, to_tail)
1047
from_abs = self.abspath(from_rel)
1048
to_abs = self.abspath(to_rel)
1050
rename(from_abs, to_abs)
1052
raise BzrError("failed to rename %r to %r: %s"
1053
% (from_abs, to_abs, e[1]),
1054
["rename rolled back"])
1056
self._write_inventory(inv)
1061
def move(self, from_paths, to_name):
1064
to_name must exist as a versioned directory.
1066
If to_name exists and is a directory, the files are moved into
1067
it, keeping their old names. If it is a directory,
1069
Note that to_name is only the last component of the new name;
1070
this doesn't change the directory.
1072
This returns a list of (from_path, to_path) pairs for each
1073
entry that is moved.
1078
## TODO: Option to move IDs only
1079
assert not isinstance(from_paths, basestring)
1080
tree = self.working_tree()
1081
inv = tree.inventory
1082
to_abs = self.abspath(to_name)
1083
if not isdir(to_abs):
1084
raise BzrError("destination %r is not a directory" % to_abs)
1085
if not tree.has_filename(to_name):
1086
raise BzrError("destination %r not in working directory" % to_abs)
1087
to_dir_id = inv.path2id(to_name)
1088
if to_dir_id == None and to_name != '':
1089
raise BzrError("destination %r is not a versioned directory" % to_name)
1090
to_dir_ie = inv[to_dir_id]
1091
if to_dir_ie.kind not in ('directory', 'root_directory'):
1092
raise BzrError("destination %r is not a directory" % to_abs)
1094
to_idpath = inv.get_idpath(to_dir_id)
1096
for f in from_paths:
1097
if not tree.has_filename(f):
1098
raise BzrError("%r does not exist in working tree" % f)
1099
f_id = inv.path2id(f)
1101
raise BzrError("%r is not versioned" % f)
1102
name_tail = splitpath(f)[-1]
1103
dest_path = appendpath(to_name, name_tail)
1104
if tree.has_filename(dest_path):
1105
raise BzrError("destination %r already exists" % dest_path)
1106
if f_id in to_idpath:
1107
raise BzrError("can't move %r to a subdirectory of itself" % f)
1109
# OK, so there's a race here, it's possible that someone will
1110
# create a file in this interval and then the rename might be
1111
# left half-done. But we should have caught most problems.
1113
for f in from_paths:
1114
name_tail = splitpath(f)[-1]
1115
dest_path = appendpath(to_name, name_tail)
1116
result.append((f, dest_path))
1117
inv.rename(inv.path2id(f), to_dir_id, name_tail)
1119
rename(self.abspath(f), self.abspath(dest_path))
1121
raise BzrError("failed to rename %r to %r: %s" % (f, dest_path, e[1]),
1122
["rename rolled back"])
1124
self._write_inventory(inv)
1131
def revert(self, filenames, old_tree=None, backups=True):
1132
"""Restore selected files to the versions from a previous tree.
1135
If true (default) backups are made of files before
1138
from bzrlib.errors import NotVersionedError, BzrError
1139
from bzrlib.atomicfile import AtomicFile
1140
from bzrlib.osutils import backup_file
1142
inv = self.read_working_inventory()
1143
if old_tree is None:
1144
old_tree = self.basis_tree()
1145
old_inv = old_tree.inventory
1148
for fn in filenames:
1149
file_id = inv.path2id(fn)
1151
raise NotVersionedError("not a versioned file", fn)
1152
if not old_inv.has_id(file_id):
1153
raise BzrError("file not present in old tree", fn, file_id)
1154
nids.append((fn, file_id))
1156
# TODO: Rename back if it was previously at a different location
1158
# TODO: If given a directory, restore the entire contents from
1159
# the previous version.
1161
# TODO: Make a backup to a temporary file.
1163
# TODO: If the file previously didn't exist, delete it?
1164
for fn, file_id in nids:
1167
f = AtomicFile(fn, 'wb')
1169
f.write(old_tree.get_file(file_id).read())
1175
def pending_merges(self):
1176
"""Return a list of pending merges.
1178
These are revisions that have been merged into the working
1179
directory but not yet committed.
1181
cfn = self._rel_controlfilename('pending-merges')
1182
if not self._transport.has(cfn):
1185
for l in self.controlfile('pending-merges', 'r').readlines():
1186
p.append(l.rstrip('\n'))
1190
def add_pending_merge(self, *revision_ids):
1191
# TODO: Perhaps should check at this point that the
1192
# history of the revision is actually present?
1193
for rev_id in revision_ids:
1194
validate_revision_id(rev_id)
1196
p = self.pending_merges()
1198
for rev_id in revision_ids:
1204
self.set_pending_merges(p)
1206
def set_pending_merges(self, rev_list):
1209
self.put_controlfile('pending-merges', '\n'.join(rev_list))
1214
def get_parent(self):
1215
"""Return the parent location of the branch.
1217
This is the default location for push/pull/missing. The usual
1218
pattern is that the user can override it by specifying a
1222
_locs = ['parent', 'pull', 'x-pull']
1225
return self.controlfile(l, 'r').read().strip('\n')
1227
if e.errno != errno.ENOENT:
1232
def set_parent(self, url):
1233
# TODO: Maybe delete old location files?
1234
from bzrlib.atomicfile import AtomicFile
1237
f = AtomicFile(self.controlfilename('parent'))
1246
def check_revno(self, revno):
1248
Check whether a revno corresponds to any revision.
1249
Zero (the NULL revision) is considered valid.
1252
self.check_real_revno(revno)
1254
def check_real_revno(self, revno):
1256
Check whether a revno corresponds to a real revision.
1257
Zero (the NULL revision) is considered invalid
1259
if revno < 1 or revno > self.revno():
1260
raise InvalidRevisionNumber(revno)
1266
class ScratchBranch(_Branch):
1267
"""Special test class: a branch that cleans up after itself.
1269
>>> b = ScratchBranch()
1277
def __init__(self, files=[], dirs=[], base=None):
1278
"""Make a test branch.
1280
This creates a temporary directory and runs init-tree in it.
1282
If any files are listed, they are created in the working copy.
1284
from tempfile import mkdtemp
1289
if isinstance(base, basestring):
1290
base = get_transport(base)
1291
_Branch.__init__(self, base, init=init)
1293
self._transport.mkdir(d)
1296
self._transport.put(f, 'content of %s' % f)
1301
>>> orig = ScratchBranch(files=["file1", "file2"])
1302
>>> clone = orig.clone()
1303
>>> if os.name != 'nt':
1304
... os.path.samefile(orig.base, clone.base)
1306
... orig.base == clone.base
1309
>>> os.path.isfile(os.path.join(clone.base, "file1"))
1312
from shutil import copytree
1313
from tempfile import mkdtemp
1316
copytree(self.base, base, symlinks=True)
1317
return ScratchBranch(base=base)
1325
"""Destroy the test branch, removing the scratch directory."""
1326
from shutil import rmtree
1329
mutter("delete ScratchBranch %s" % self.base)
1332
# Work around for shutil.rmtree failing on Windows when
1333
# readonly files are encountered
1334
mutter("hit exception in destroying ScratchBranch: %s" % e)
1335
for root, dirs, files in os.walk(self.base, topdown=False):
1337
os.chmod(os.path.join(root, name), 0700)
1339
self._transport = None
1343
######################################################################
1347
def is_control_file(filename):
1348
## FIXME: better check
1349
filename = os.path.normpath(filename)
1350
while filename != '':
1351
head, tail = os.path.split(filename)
1352
## mutter('check %r for control file' % ((head, tail), ))
1353
if tail == bzrlib.BZRDIR:
1355
if filename == head:
1362
def gen_file_id(name):
1363
"""Return new file id.
1365
This should probably generate proper UUIDs, but for the moment we
1366
cope with just randomness because running uuidgen every time is
1369
from binascii import hexlify
1370
from time import time
1372
# get last component
1373
idx = name.rfind('/')
1375
name = name[idx+1 : ]
1376
idx = name.rfind('\\')
1378
name = name[idx+1 : ]
1380
# make it not a hidden file
1381
name = name.lstrip('.')
1383
# remove any wierd characters; we don't escape them but rather
1384
# just pull them out
1385
name = re.sub(r'[^\w.]', '', name)
1387
s = hexlify(rand_bytes(8))
1388
return '-'.join((name, compact_date(time()), s))
1392
"""Return a new tree-root file id."""
1393
return gen_file_id('TREE_ROOT')