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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.inventory import InventoryEntry
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import bzrlib.inventory as inventory
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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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import bzrlib.errors as errors
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from bzrlib.errors import (BzrError, InvalidRevisionNumber, InvalidRevisionId,
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NoSuchRevision, HistoryMissing, NotBranchError,
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DivergedBranches, LockError, 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
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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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import bzrlib.transactions as transactions
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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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BZR_BRANCH_FORMAT_6 = "Bazaar-NG branch, format 6\n"
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## TODO: Maybe include checks for common corruption of newlines, etc?
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# TODO: Some operations like log might retrieve the same revisions
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# repeatedly to calculate deltas. We could perhaps have a weakref
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# cache in memory to make this faster. In general anything can be
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# cached in memory between lock and unlock operations.
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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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######################################################################
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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(get_transport(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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mutter("trying to open %r with transport %r", base, t)
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def open_containing(url):
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"""Open an existing branch which contains url.
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This probes for a branch at url, and searches upwards from there.
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Basically we keep looking up until we find the control directory or
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run into the root. If there isn't one, raises NotBranchError.
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t = get_transport(url)
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except NotBranchError:
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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' % url)
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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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self.cache_root = 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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"%r is not a 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, prefixed=False):
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# FIXME: This approach of assuming stores are all entirely compressed
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# or entirely uncompressed is tidy, but breaks upgrade from
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# some existing branches where there's a mixture; we probably
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# still want the option to look for both.
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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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# cache_path = os.path.join(self.cache_root, name)
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# os.mkdir(cache_path)
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# store = bzrlib.store.CachedStore(store, cache_path)
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def get_weave(name, prefixed=False):
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relpath = self._rel_controlfilename(name)
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ws = WeaveStore(self._transport.clone(relpath), prefixed=prefixed)
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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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elif self._branch_format == 6:
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self.control_weaves = get_weave([])
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self.weave_store = get_weave('weaves', prefixed=True)
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self.revision_store = get_store('revision-store', compressed=False,
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self._transaction = None
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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, doc="The URL for the root of this branch.")
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def _finish_transaction(self):
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"""Exit the current transaction."""
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if self._transaction is None:
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raise errors.LockError('Branch %s is not in a transaction' %
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transaction = self._transaction
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self._transaction = None
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def get_transaction(self):
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"""Return the current active transaction.
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If no transaction is active, this returns a passthrough object
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for which all data is immedaitely flushed and no caching happens.
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if self._transaction is None:
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return transactions.PassThroughTransaction()
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return self._transaction
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def _set_transaction(self, new_transaction):
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"""Set a new active transaction."""
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if self._transaction is not None:
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raise errors.LockError('Branch %s is in a transaction already.' %
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self._transaction = new_transaction
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def lock_write(self):
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mutter("lock write: %s (%s)", self, self._lock_count)
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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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self._set_transaction(transactions.PassThroughTransaction())
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mutter("lock read: %s (%s)", self, self._lock_count)
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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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self._set_transaction(transactions.ReadOnlyTransaction())
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# 5K may be excessive, but hey, its a knob.
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self.get_transaction().set_cache_size(5000)
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mutter("unlock: %s (%s)", self, self._lock_count)
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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._finish_transaction()
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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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XXX: Robert Collins 20051017 what is this used for? why is it a branch
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method and not a tree method.
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return self._transport.abspath(name)
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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_6),
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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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mutter("got branch format %r", fmt)
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if fmt == BZR_BRANCH_FORMAT_6:
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self._branch_format = 6
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elif 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 not in (5, 6)):
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raise errors.UnsupportedFormatError(
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'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, symlink or directory: %s' % quotefn(f))
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if not InventoryEntry.versionable_kind(kind):
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raise BzrError('cannot add: not a versionable file ('
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'i.e. 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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# fixme, there should be a factory function inv,add_??
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if kind == 'directory':
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inv.add(inventory.InventoryDirectory(file_id, name, parent))
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inv.add(inventory.InventoryFile(file_id, name, parent))
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elif kind == 'symlink':
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inv.add(inventory.InventoryLink(file_id, name, parent))
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raise BzrError("unknown kind %r" % kind)
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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):
708
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)
714
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.
721
This does not necessarily imply the revision is merge
722
or on the mainline."""
723
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]
735
except (IndexError, KeyError):
736
raise bzrlib.errors.NoSuchRevision(self, revision_id)
741
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:
754
raise bzrlib.errors.BzrError('failed to unpack revision_xml',
758
assert r.revision_id == revision_id
761
def get_revision_delta(self, revno):
762
"""Return the delta for one revision.
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The delta is relative to its mainline predecessor, or the
765
empty tree for revision 1.
767
assert isinstance(revno, int)
768
rh = self.revision_history()
769
if not (1 <= revno <= len(rh)):
770
raise InvalidRevisionNumber(revno)
772
# revno is 1-based; list is 0-based
774
new_tree = self.revision_tree(rh[revno-1])
776
old_tree = EmptyTree()
778
old_tree = self.revision_tree(rh[revno-2])
780
return compare_trees(old_tree, new_tree)
782
def get_revision_sha1(self, revision_id):
783
"""Hash the stored value of a revision, and return it."""
784
# In the future, revision entries will be signed. At that
785
# point, it is probably best *not* to include the signature
786
# in the revision hash. Because that lets you re-sign
787
# the revision, (add signatures/remove signatures) and still
788
# have all hash pointers stay consistent.
789
# But for now, just hash the contents.
790
return bzrlib.osutils.sha_file(self.get_revision_xml_file(revision_id))
792
def get_ancestry(self, revision_id):
793
"""Return a list of revision-ids integrated by a revision.
795
This currently returns a list, but the ordering is not guaranteed:
798
if revision_id is None:
800
w = self.get_inventory_weave()
801
return [None] + map(w.idx_to_name,
802
w.inclusions([w.lookup(revision_id)]))
804
def get_inventory_weave(self):
805
return self.control_weaves.get_weave('inventory',
806
self.get_transaction())
808
def get_inventory(self, revision_id):
809
"""Get Inventory object by hash."""
810
xml = self.get_inventory_xml(revision_id)
811
return bzrlib.xml5.serializer_v5.read_inventory_from_string(xml)
813
def get_inventory_xml(self, revision_id):
814
"""Get inventory XML as a file object."""
816
assert isinstance(revision_id, basestring), type(revision_id)
817
iw = self.get_inventory_weave()
818
return iw.get_text(iw.lookup(revision_id))
820
raise bzrlib.errors.HistoryMissing(self, 'inventory', revision_id)
822
def get_inventory_sha1(self, revision_id):
823
"""Return the sha1 hash of the inventory entry
825
return self.get_revision(revision_id).inventory_sha1
827
def get_revision_inventory(self, revision_id):
828
"""Return inventory of a past revision."""
829
# TODO: Unify this with get_inventory()
830
# bzr 0.0.6 and later imposes the constraint that the inventory_id
831
# must be the same as its revision, so this is trivial.
832
if revision_id == None:
833
return Inventory(self.get_root_id())
835
return self.get_inventory(revision_id)
837
def revision_history(self):
838
"""Return sequence of revision hashes on to this branch."""
841
transaction = self.get_transaction()
842
history = transaction.map.find_revision_history()
843
if history is not None:
844
mutter("cache hit for revision-history in %s", self)
846
history = [l.rstrip('\r\n') for l in
847
self.controlfile('revision-history', 'r').readlines()]
848
transaction.map.add_revision_history(history)
849
# this call is disabled because revision_history is
850
# not really an object yet, and the transaction is for objects.
851
# transaction.register_clean(history, precious=True)
856
def common_ancestor(self, other, self_revno=None, other_revno=None):
858
>>> from bzrlib.commit import commit
859
>>> sb = ScratchBranch(files=['foo', 'foo~'])
860
>>> sb.common_ancestor(sb) == (None, None)
862
>>> commit(sb, "Committing first revision", verbose=False)
863
>>> sb.common_ancestor(sb)[0]
865
>>> clone = sb.clone()
866
>>> commit(sb, "Committing second revision", verbose=False)
867
>>> sb.common_ancestor(sb)[0]
869
>>> sb.common_ancestor(clone)[0]
871
>>> commit(clone, "Committing divergent second revision",
873
>>> sb.common_ancestor(clone)[0]
875
>>> sb.common_ancestor(clone) == clone.common_ancestor(sb)
877
>>> sb.common_ancestor(sb) != clone.common_ancestor(clone)
879
>>> clone2 = sb.clone()
880
>>> sb.common_ancestor(clone2)[0]
882
>>> sb.common_ancestor(clone2, self_revno=1)[0]
884
>>> sb.common_ancestor(clone2, other_revno=1)[0]
887
my_history = self.revision_history()
888
other_history = other.revision_history()
889
if self_revno is None:
890
self_revno = len(my_history)
891
if other_revno is None:
892
other_revno = len(other_history)
893
indices = range(min((self_revno, other_revno)))
896
if my_history[r] == other_history[r]:
897
return r+1, my_history[r]
902
"""Return current revision number for this branch.
904
That is equivalent to the number of revisions committed to
907
return len(self.revision_history())
910
def last_revision(self):
911
"""Return last patch hash, or None if no history.
913
ph = self.revision_history()
920
def missing_revisions(self, other, stop_revision=None, diverged_ok=False):
921
"""Return a list of new revisions that would perfectly fit.
923
If self and other have not diverged, return a list of the revisions
924
present in other, but missing from self.
926
>>> from bzrlib.commit import commit
927
>>> bzrlib.trace.silent = True
928
>>> br1 = ScratchBranch()
929
>>> br2 = ScratchBranch()
930
>>> br1.missing_revisions(br2)
932
>>> commit(br2, "lala!", rev_id="REVISION-ID-1")
933
>>> br1.missing_revisions(br2)
935
>>> br2.missing_revisions(br1)
937
>>> commit(br1, "lala!", rev_id="REVISION-ID-1")
938
>>> br1.missing_revisions(br2)
940
>>> commit(br2, "lala!", rev_id="REVISION-ID-2A")
941
>>> br1.missing_revisions(br2)
943
>>> commit(br1, "lala!", rev_id="REVISION-ID-2B")
944
>>> br1.missing_revisions(br2)
945
Traceback (most recent call last):
946
DivergedBranches: These branches have diverged.
948
# FIXME: If the branches have diverged, but the latest
949
# revision in this branch is completely merged into the other,
950
# then we should still be able to pull.
951
self_history = self.revision_history()
952
self_len = len(self_history)
953
other_history = other.revision_history()
954
other_len = len(other_history)
955
common_index = min(self_len, other_len) -1
956
if common_index >= 0 and \
957
self_history[common_index] != other_history[common_index]:
958
raise DivergedBranches(self, other)
960
if stop_revision is None:
961
stop_revision = other_len
963
assert isinstance(stop_revision, int)
964
if stop_revision > other_len:
965
raise bzrlib.errors.NoSuchRevision(self, stop_revision)
966
return other_history[self_len:stop_revision]
968
def update_revisions(self, other, stop_revision=None):
969
"""Pull in new perfect-fit revisions."""
970
from bzrlib.fetch import greedy_fetch
971
from bzrlib.revision import get_intervening_revisions
972
if stop_revision is None:
973
stop_revision = other.last_revision()
974
if (stop_revision is not None and
975
stop_revision in self.revision_history()):
977
greedy_fetch(to_branch=self, from_branch=other,
978
revision=stop_revision)
979
pullable_revs = self.missing_revisions(
980
other, other.revision_id_to_revno(stop_revision))
982
greedy_fetch(to_branch=self,
984
revision=pullable_revs[-1])
985
self.append_revision(*pullable_revs)
988
def commit(self, *args, **kw):
989
from bzrlib.commit import Commit
990
Commit().commit(self, *args, **kw)
992
def revision_id_to_revno(self, revision_id):
993
"""Given a revision id, return its revno"""
994
if revision_id is None:
996
history = self.revision_history()
998
return history.index(revision_id) + 1
1000
raise bzrlib.errors.NoSuchRevision(self, revision_id)
1002
def get_rev_id(self, revno, history=None):
1003
"""Find the revision id of the specified revno."""
1007
history = self.revision_history()
1008
elif revno <= 0 or revno > len(history):
1009
raise bzrlib.errors.NoSuchRevision(self, revno)
1010
return history[revno - 1]
1012
def revision_tree(self, revision_id):
1013
"""Return Tree for a revision on this branch.
1015
`revision_id` may be None for the null revision, in which case
1016
an `EmptyTree` is returned."""
1017
# TODO: refactor this to use an existing revision object
1018
# so we don't need to read it in twice.
1019
if revision_id == None:
1022
inv = self.get_revision_inventory(revision_id)
1023
return RevisionTree(self.weave_store, inv, revision_id)
1026
def working_tree(self):
1027
"""Return a `Tree` for the working copy."""
1028
from bzrlib.workingtree import WorkingTree
1029
# TODO: In the future, WorkingTree should utilize Transport
1030
# RobertCollins 20051003 - I don't think it should - working trees are
1031
# much more complex to keep consistent than our careful .bzr subset.
1032
# instead, we should say that working trees are local only, and optimise
1034
return WorkingTree(self.base, branch=self)
1037
def basis_tree(self):
1038
"""Return `Tree` object for last revision.
1040
If there are no revisions yet, return an `EmptyTree`.
1042
return self.revision_tree(self.last_revision())
1045
def rename_one(self, from_rel, to_rel):
1048
This can change the directory or the filename or both.
1052
tree = self.working_tree()
1053
inv = tree.inventory
1054
if not tree.has_filename(from_rel):
1055
raise BzrError("can't rename: old working file %r does not exist" % from_rel)
1056
if tree.has_filename(to_rel):
1057
raise BzrError("can't rename: new working file %r already exists" % to_rel)
1059
file_id = inv.path2id(from_rel)
1061
raise BzrError("can't rename: old name %r is not versioned" % from_rel)
1063
if inv.path2id(to_rel):
1064
raise BzrError("can't rename: new name %r is already versioned" % to_rel)
1066
to_dir, to_tail = os.path.split(to_rel)
1067
to_dir_id = inv.path2id(to_dir)
1068
if to_dir_id == None and to_dir != '':
1069
raise BzrError("can't determine destination directory id for %r" % to_dir)
1071
mutter("rename_one:")
1072
mutter(" file_id {%s}" % file_id)
1073
mutter(" from_rel %r" % from_rel)
1074
mutter(" to_rel %r" % to_rel)
1075
mutter(" to_dir %r" % to_dir)
1076
mutter(" to_dir_id {%s}" % to_dir_id)
1078
inv.rename(file_id, to_dir_id, to_tail)
1080
from_abs = self.abspath(from_rel)
1081
to_abs = self.abspath(to_rel)
1083
rename(from_abs, to_abs)
1085
raise BzrError("failed to rename %r to %r: %s"
1086
% (from_abs, to_abs, e[1]),
1087
["rename rolled back"])
1089
self._write_inventory(inv)
1094
def move(self, from_paths, to_name):
1097
to_name must exist as a versioned directory.
1099
If to_name exists and is a directory, the files are moved into
1100
it, keeping their old names. If it is a directory,
1102
Note that to_name is only the last component of the new name;
1103
this doesn't change the directory.
1105
This returns a list of (from_path, to_path) pairs for each
1106
entry that is moved.
1111
## TODO: Option to move IDs only
1112
assert not isinstance(from_paths, basestring)
1113
tree = self.working_tree()
1114
inv = tree.inventory
1115
to_abs = self.abspath(to_name)
1116
if not isdir(to_abs):
1117
raise BzrError("destination %r is not a directory" % to_abs)
1118
if not tree.has_filename(to_name):
1119
raise BzrError("destination %r not in working directory" % to_abs)
1120
to_dir_id = inv.path2id(to_name)
1121
if to_dir_id == None and to_name != '':
1122
raise BzrError("destination %r is not a versioned directory" % to_name)
1123
to_dir_ie = inv[to_dir_id]
1124
if to_dir_ie.kind not in ('directory', 'root_directory'):
1125
raise BzrError("destination %r is not a directory" % to_abs)
1127
to_idpath = inv.get_idpath(to_dir_id)
1129
for f in from_paths:
1130
if not tree.has_filename(f):
1131
raise BzrError("%r does not exist in working tree" % f)
1132
f_id = inv.path2id(f)
1134
raise BzrError("%r is not versioned" % f)
1135
name_tail = splitpath(f)[-1]
1136
dest_path = appendpath(to_name, name_tail)
1137
if tree.has_filename(dest_path):
1138
raise BzrError("destination %r already exists" % dest_path)
1139
if f_id in to_idpath:
1140
raise BzrError("can't move %r to a subdirectory of itself" % f)
1142
# OK, so there's a race here, it's possible that someone will
1143
# create a file in this interval and then the rename might be
1144
# left half-done. But we should have caught most problems.
1146
for f in from_paths:
1147
name_tail = splitpath(f)[-1]
1148
dest_path = appendpath(to_name, name_tail)
1149
result.append((f, dest_path))
1150
inv.rename(inv.path2id(f), to_dir_id, name_tail)
1152
rename(self.abspath(f), self.abspath(dest_path))
1154
raise BzrError("failed to rename %r to %r: %s" % (f, dest_path, e[1]),
1155
["rename rolled back"])
1157
self._write_inventory(inv)
1164
def revert(self, filenames, old_tree=None, backups=True):
1165
"""Restore selected files to the versions from a previous tree.
1168
If true (default) backups are made of files before
1171
from bzrlib.errors import NotVersionedError, BzrError
1172
from bzrlib.atomicfile import AtomicFile
1173
from bzrlib.osutils import backup_file
1175
inv = self.read_working_inventory()
1176
if old_tree is None:
1177
old_tree = self.basis_tree()
1178
old_inv = old_tree.inventory
1181
for fn in filenames:
1182
file_id = inv.path2id(fn)
1184
raise NotVersionedError("not a versioned file", fn)
1185
if not old_inv.has_id(file_id):
1186
raise BzrError("file not present in old tree", fn, file_id)
1187
nids.append((fn, file_id))
1189
# TODO: Rename back if it was previously at a different location
1191
# TODO: If given a directory, restore the entire contents from
1192
# the previous version.
1194
# TODO: Make a backup to a temporary file.
1196
# TODO: If the file previously didn't exist, delete it?
1197
for fn, file_id in nids:
1200
f = AtomicFile(fn, 'wb')
1202
f.write(old_tree.get_file(file_id).read())
1208
def pending_merges(self):
1209
"""Return a list of pending merges.
1211
These are revisions that have been merged into the working
1212
directory but not yet committed.
1214
cfn = self._rel_controlfilename('pending-merges')
1215
if not self._transport.has(cfn):
1218
for l in self.controlfile('pending-merges', 'r').readlines():
1219
p.append(l.rstrip('\n'))
1223
def add_pending_merge(self, *revision_ids):
1224
# TODO: Perhaps should check at this point that the
1225
# history of the revision is actually present?
1226
p = self.pending_merges()
1228
for rev_id in revision_ids:
1234
self.set_pending_merges(p)
1236
def set_pending_merges(self, rev_list):
1239
self.put_controlfile('pending-merges', '\n'.join(rev_list))
1244
def get_parent(self):
1245
"""Return the parent location of the branch.
1247
This is the default location for push/pull/missing. The usual
1248
pattern is that the user can override it by specifying a
1252
_locs = ['parent', 'pull', 'x-pull']
1255
return self.controlfile(l, 'r').read().strip('\n')
1257
if e.errno != errno.ENOENT:
1262
def set_parent(self, url):
1263
# TODO: Maybe delete old location files?
1264
from bzrlib.atomicfile import AtomicFile
1267
f = AtomicFile(self.controlfilename('parent'))
1276
def check_revno(self, revno):
1278
Check whether a revno corresponds to any revision.
1279
Zero (the NULL revision) is considered valid.
1282
self.check_real_revno(revno)
1284
def check_real_revno(self, revno):
1286
Check whether a revno corresponds to a real revision.
1287
Zero (the NULL revision) is considered invalid
1289
if revno < 1 or revno > self.revno():
1290
raise InvalidRevisionNumber(revno)
1296
class ScratchBranch(_Branch):
1297
"""Special test class: a branch that cleans up after itself.
1299
>>> b = ScratchBranch()
1307
def __init__(self, files=[], dirs=[], base=None):
1308
"""Make a test branch.
1310
This creates a temporary directory and runs init-tree in it.
1312
If any files are listed, they are created in the working copy.
1314
from tempfile import mkdtemp
1319
if isinstance(base, basestring):
1320
base = get_transport(base)
1321
_Branch.__init__(self, base, init=init)
1323
self._transport.mkdir(d)
1326
self._transport.put(f, 'content of %s' % f)
1331
>>> orig = ScratchBranch(files=["file1", "file2"])
1332
>>> clone = orig.clone()
1333
>>> if os.name != 'nt':
1334
... os.path.samefile(orig.base, clone.base)
1336
... orig.base == clone.base
1339
>>> os.path.isfile(os.path.join(clone.base, "file1"))
1342
from shutil import copytree
1343
from tempfile import mkdtemp
1346
copytree(self.base, base, symlinks=True)
1347
return ScratchBranch(base=base)
1353
"""Destroy the test branch, removing the scratch directory."""
1354
from shutil import rmtree
1357
mutter("delete ScratchBranch %s" % self.base)
1360
# Work around for shutil.rmtree failing on Windows when
1361
# readonly files are encountered
1362
mutter("hit exception in destroying ScratchBranch: %s" % e)
1363
for root, dirs, files in os.walk(self.base, topdown=False):
1365
os.chmod(os.path.join(root, name), 0700)
1367
self._transport = None
1371
######################################################################
1375
def is_control_file(filename):
1376
## FIXME: better check
1377
filename = os.path.normpath(filename)
1378
while filename != '':
1379
head, tail = os.path.split(filename)
1380
## mutter('check %r for control file' % ((head, tail), ))
1381
if tail == bzrlib.BZRDIR:
1383
if filename == head:
1390
def gen_file_id(name):
1391
"""Return new file id.
1393
This should probably generate proper UUIDs, but for the moment we
1394
cope with just randomness because running uuidgen every time is
1397
from binascii import hexlify
1398
from time import time
1400
# get last component
1401
idx = name.rfind('/')
1403
name = name[idx+1 : ]
1404
idx = name.rfind('\\')
1406
name = name[idx+1 : ]
1408
# make it not a hidden file
1409
name = name.lstrip('.')
1411
# remove any wierd characters; we don't escape them but rather
1412
# just pull them out
1413
name = re.sub(r'[^\w.]', '', name)
1415
s = hexlify(rand_bytes(8))
1416
return '-'.join((name, compact_date(time()), s))
1420
"""Return a new tree-root file id."""
1421
return gen_file_id('TREE_ROOT')