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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, NotVersionedError,
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from bzrlib.textui import show_status
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from bzrlib.revision import (Revision, is_ancestor, get_intervening_revisions,
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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.testament import Testament
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import bzrlib.transactions as transactions
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from bzrlib.transport import Transport, get_transport
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from config import TreeConfig
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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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def needs_read_lock(unbound):
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"""Decorate unbound to take out and release a read lock."""
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def decorated(self, *args, **kwargs):
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return unbound(self, *args, **kwargs)
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def needs_write_lock(unbound):
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"""Decorate unbound to take out and release a write lock."""
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def decorated(self, *args, **kwargs):
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return unbound(self, *args, **kwargs)
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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 BzrBranch(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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If there is one, it is returned, along with the unused portion of url.
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t = get_transport(url)
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return BzrBranch(t), t.relpath(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(path=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 BzrBranch(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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cfg = self.tree_config()
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return cfg.get_option(u"nickname", default=self.base.split('/')[-1])
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def _set_nick(self, nick):
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cfg = self.tree_config()
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cfg.set_option(nick, "nickname")
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assert cfg.get_option("nickname") == nick
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nick = property(_get_nick, _set_nick)
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def push_stores(self, branch_to):
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"""Copy the content of this branches store to branch_to."""
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raise NotImplementedError('push_stores is abstract')
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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 immediately flushed and no caching happens.
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raise NotImplementedError('get_transaction is abstract')
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def lock_write(self):
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raise NotImplementedError('lock_write is abstract')
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raise NotImplementedError('lock_read is abstract')
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raise NotImplementedError('unlock is abstract')
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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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raise NotImplementedError('abspath is abstract')
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def controlfilename(self, file_or_path):
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"""Return location relative to branch."""
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raise NotImplementedError('controlfilename is abstract')
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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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raise NotImplementedError('controlfile is abstract')
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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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raise NotImplementedError('put_controlfile is abstract')
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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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raise NotImplementedError('put_controlfiles is abstract')
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def get_root_id(self):
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"""Return the id of this branches root"""
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raise NotImplementedError('get_root_id is abstract')
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def set_root_id(self, file_id):
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raise NotImplementedError('set_root_id is abstract')
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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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raise NotImplementedError('add is abstract')
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def print_file(self, file, revno):
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"""Print `file` to stdout."""
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raise NotImplementedError('print_file is abstract')
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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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>>> from bzrlib.workingtree import WorkingTree
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>>> b = ScratchBranch(files=['foo', 'foo~'])
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>>> map(str, b.unknowns())
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>>> list(b.unknowns())
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>>> WorkingTree(b.base, b).remove('foo')
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>>> list(b.unknowns())
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raise NotImplementedError('unknowns is abstract')
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def append_revision(self, *revision_ids):
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raise NotImplementedError('append_revision is abstract')
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def set_revision_history(self, rev_history):
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raise NotImplementedError('set_revision_history is abstract')
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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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raise NotImplementedError('has_revision is abstract')
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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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raise NotImplementedError('get_revision_xml_file is abstract')
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def get_revision_xml(self, revision_id):
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raise NotImplementedError('get_revision_xml is abstract')
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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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raise NotImplementedError('get_revision is abstract')
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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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raise NotImplementedError('get_revision_sha1 is abstract')
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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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This currently returns a list, but the ordering is not guaranteed:
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raise NotImplementedError('get_ancestry is abstract')
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def get_inventory(self, revision_id):
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"""Get Inventory object by hash."""
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raise NotImplementedError('get_inventory is abstract')
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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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raise NotImplementedError('get_inventory_xml is abstract')
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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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raise NotImplementedError('get_inventory_sha1 is abstract')
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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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raise NotImplementedError('get_revision_inventory is abstract')
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def revision_history(self):
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"""Return sequence of revision hashes on to this branch."""
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raise NotImplementedError('revision_history is abstract')
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"""Return current revision number for this branch.
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That is equivalent to the number of revisions committed to
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return len(self.revision_history())
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def last_revision(self):
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"""Return last patch hash, or None if no history."""
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ph = self.revision_history()
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def missing_revisions(self, other, stop_revision=None, diverged_ok=False):
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"""Return a list of new revisions that would perfectly fit.
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If self and other have not diverged, return a list of the revisions
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present in other, but missing from self.
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>>> from bzrlib.commit import commit
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>>> bzrlib.trace.silent = True
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>>> br1 = ScratchBranch()
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>>> br2 = ScratchBranch()
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>>> br1.missing_revisions(br2)
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>>> commit(br2, "lala!", rev_id="REVISION-ID-1")
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>>> br1.missing_revisions(br2)
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>>> br2.missing_revisions(br1)
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>>> commit(br1, "lala!", rev_id="REVISION-ID-1")
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>>> br1.missing_revisions(br2)
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>>> commit(br2, "lala!", rev_id="REVISION-ID-2A")
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>>> br1.missing_revisions(br2)
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>>> commit(br1, "lala!", rev_id="REVISION-ID-2B")
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>>> br1.missing_revisions(br2)
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Traceback (most recent call last):
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DivergedBranches: These branches have diverged.
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self_history = self.revision_history()
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self_len = len(self_history)
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other_history = other.revision_history()
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other_len = len(other_history)
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common_index = min(self_len, other_len) -1
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if common_index >= 0 and \
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self_history[common_index] != other_history[common_index]:
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raise DivergedBranches(self, other)
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if stop_revision is None:
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stop_revision = other_len
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assert isinstance(stop_revision, int)
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if stop_revision > other_len:
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raise bzrlib.errors.NoSuchRevision(self, stop_revision)
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return other_history[self_len:stop_revision]
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def update_revisions(self, other, stop_revision=None):
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"""Pull in new perfect-fit revisions."""
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raise NotImplementedError('update_revisions is abstract')
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def pullable_revisions(self, other, stop_revision):
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raise NotImplementedError('pullable_revisions is abstract')
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def commit(self, *args, **kw):
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raise NotImplementedError('commit is abstract')
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def revision_id_to_revno(self, revision_id):
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"""Given a revision id, return its revno"""
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if revision_id is None:
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history = self.revision_history()
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return history.index(revision_id) + 1
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raise bzrlib.errors.NoSuchRevision(self, revision_id)
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def get_rev_id(self, revno, history=None):
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"""Find the revision id of the specified revno."""
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history = self.revision_history()
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elif revno <= 0 or revno > len(history):
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raise bzrlib.errors.NoSuchRevision(self, revno)
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return history[revno - 1]
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def revision_tree(self, revision_id):
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"""Return Tree for a revision on this branch.
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`revision_id` may be None for the null revision, in which case
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an `EmptyTree` is returned."""
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raise NotImplementedError('revision_tree is abstract')
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def working_tree(self):
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"""Return a `Tree` for the working copy."""
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raise NotImplementedError('working_tree is abstract')
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def pull(self, source, overwrite=False):
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raise NotImplementedError('pull is abstract')
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def basis_tree(self):
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"""Return `Tree` object for last revision.
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If there are no revisions yet, return an `EmptyTree`.
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return self.revision_tree(self.last_revision())
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def rename_one(self, from_rel, to_rel):
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This can change the directory or the filename or both.
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raise NotImplementedError('rename_one is abstract')
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def move(self, from_paths, to_name):
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to_name must exist as a versioned directory.
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If to_name exists and is a directory, the files are moved into
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it, keeping their old names. If it is a directory,
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Note that to_name is only the last component of the new name;
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this doesn't change the directory.
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This returns a list of (from_path, to_path) pairs for each
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raise NotImplementedError('move is abstract')
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def revert(self, filenames, old_tree=None, backups=True):
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"""Restore selected files to the versions from a previous tree.
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If true (default) backups are made of files before
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raise NotImplementedError('revert is abstract')
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def pending_merges(self):
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"""Return a list of pending merges.
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These are revisions that have been merged into the working
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directory but not yet committed.
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raise NotImplementedError('pending_merges is abstract')
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def add_pending_merge(self, *revision_ids):
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# TODO: Perhaps should check at this point that the
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# history of the revision is actually present?
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raise NotImplementedError('add_pending_merge is abstract')
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def set_pending_merges(self, rev_list):
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raise NotImplementedError('set_pending_merges is abstract')
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def get_parent(self):
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"""Return the parent location of the branch.
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This is the default location for push/pull/missing. The usual
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pattern is that the user can override it by specifying a
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raise NotImplementedError('get_parent is abstract')
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def get_push_location(self):
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"""Return the None or the location to push this branch to."""
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raise NotImplementedError('get_push_location is abstract')
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def set_push_location(self, location):
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"""Set a new push location for this branch."""
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raise NotImplementedError('set_push_location is abstract')
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def set_parent(self, url):
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raise NotImplementedError('set_parent is abstract')
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def check_revno(self, revno):
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Check whether a revno corresponds to any revision.
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Zero (the NULL revision) is considered valid.
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self.check_real_revno(revno)
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def check_real_revno(self, revno):
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Check whether a revno corresponds to a real revision.
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Zero (the NULL revision) is considered invalid
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if revno < 1 or revno > self.revno():
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raise InvalidRevisionNumber(revno)
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def sign_revision(self, revision_id, gpg_strategy):
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raise NotImplementedError('sign_revision is abstract')
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def store_revision_signature(self, gpg_strategy, plaintext, revision_id):
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raise NotImplementedError('store_revision_signature is abstract')
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class BzrBranch(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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"""See Branch.push_stores."""
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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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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.revision_store.register_suffix('sig')
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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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"""See Branch.get_transaction."""
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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.
767
self.get_transaction().set_cache_size(5000)
770
mutter("unlock: %s (%s)", self, self._lock_count)
771
if not self._lock_mode:
772
raise LockError('branch %r is not locked' % (self))
774
if self._lock_count > 1:
775
self._lock_count -= 1
777
self._finish_transaction()
780
self._lock_mode = self._lock_count = None
782
def abspath(self, name):
783
"""See Branch.abspath."""
784
return self._transport.abspath(name)
786
def _rel_controlfilename(self, file_or_path):
787
if not isinstance(file_or_path, basestring):
788
file_or_path = '/'.join(file_or_path)
789
if file_or_path == '':
791
return bzrlib.transport.urlescape(bzrlib.BZRDIR + '/' + file_or_path)
793
def controlfilename(self, file_or_path):
794
"""See Branch.controlfilename."""
795
return self._transport.abspath(self._rel_controlfilename(file_or_path))
797
def controlfile(self, file_or_path, mode='r'):
798
"""See Branch.controlfile."""
801
relpath = self._rel_controlfilename(file_or_path)
802
#TODO: codecs.open() buffers linewise, so it was overloaded with
803
# a much larger buffer, do we need to do the same for getreader/getwriter?
805
return self._transport.get(relpath)
807
raise BzrError("Branch.controlfile(mode='wb') is not supported, use put_controlfiles")
809
# XXX: Do we really want errors='replace'? Perhaps it should be
810
# an error, or at least reported, if there's incorrectly-encoded
811
# data inside a file.
812
# <https://launchpad.net/products/bzr/+bug/3823>
813
return codecs.getreader('utf-8')(self._transport.get(relpath), errors='replace')
815
raise BzrError("Branch.controlfile(mode='w') is not supported, use put_controlfiles")
817
raise BzrError("invalid controlfile mode %r" % mode)
819
def put_controlfile(self, path, f, encode=True):
820
"""See Branch.put_controlfile."""
821
self.put_controlfiles([(path, f)], encode=encode)
823
def put_controlfiles(self, files, encode=True):
824
"""See Branch.put_controlfiles."""
827
for path, f in files:
829
if isinstance(f, basestring):
830
f = f.encode('utf-8', 'replace')
832
f = codecs.getwriter('utf-8')(f, errors='replace')
833
path = self._rel_controlfilename(path)
834
ctrl_files.append((path, f))
835
self._transport.put_multi(ctrl_files)
837
def _make_control(self):
838
from bzrlib.inventory import Inventory
839
from bzrlib.weavefile import write_weave_v5
840
from bzrlib.weave import Weave
842
# Create an empty inventory
844
# if we want per-tree root ids then this is the place to set
845
# them; they're not needed for now and so ommitted for
847
bzrlib.xml5.serializer_v5.write_inventory(Inventory(), sio)
848
empty_inv = sio.getvalue()
850
bzrlib.weavefile.write_weave_v5(Weave(), sio)
851
empty_weave = sio.getvalue()
853
dirs = [[], 'revision-store', 'weaves']
855
"This is a Bazaar-NG control directory.\n"
856
"Do not change any files in this directory.\n"),
857
('branch-format', BZR_BRANCH_FORMAT_6),
858
('revision-history', ''),
861
('pending-merges', ''),
862
('inventory', empty_inv),
863
('inventory.weave', empty_weave),
864
('ancestry.weave', empty_weave)
866
cfn = self._rel_controlfilename
867
self._transport.mkdir_multi([cfn(d) for d in dirs])
868
self.put_controlfiles(files)
869
mutter('created control directory in ' + self._transport.base)
871
def _check_format(self, relax_version_check):
872
"""Check this branch format is supported.
874
The format level is stored, as an integer, in
875
self._branch_format for code that needs to check it later.
877
In the future, we might need different in-memory Branch
878
classes to support downlevel branches. But not yet.
881
fmt = self.controlfile('branch-format', 'r').read()
883
raise NotBranchError(path=self.base)
884
mutter("got branch format %r", fmt)
885
if fmt == BZR_BRANCH_FORMAT_6:
886
self._branch_format = 6
887
elif fmt == BZR_BRANCH_FORMAT_5:
888
self._branch_format = 5
889
elif fmt == BZR_BRANCH_FORMAT_4:
890
self._branch_format = 4
892
if (not relax_version_check
893
and self._branch_format not in (5, 6)):
894
raise errors.UnsupportedFormatError(
895
'sorry, branch format %r not supported' % fmt,
896
['use a different bzr version',
897
'or remove the .bzr directory'
898
' and "bzr init" again'])
900
def get_root_id(self):
901
"""See Branch.get_root_id."""
902
inv = self.get_inventory(self.last_revision())
903
return inv.root.file_id
906
def set_root_id(self, file_id):
907
"""See Branch.set_root_id."""
908
inv = self.working_tree().read_working_inventory()
909
orig_root_id = inv.root.file_id
910
del inv._byid[inv.root.file_id]
911
inv.root.file_id = file_id
912
inv._byid[inv.root.file_id] = inv.root
915
if entry.parent_id in (None, orig_root_id):
916
entry.parent_id = inv.root.file_id
917
self._write_inventory(inv)
920
def _write_inventory(self, inv):
921
"""Update the working inventory.
923
That is to say, the inventory describing changes underway, that
924
will be committed to the next revision.
926
from cStringIO import StringIO
928
bzrlib.xml5.serializer_v5.write_inventory(inv, sio)
930
# Transport handles atomicity
931
self.put_controlfile('inventory', sio)
933
mutter('wrote working inventory')
936
def add(self, files, ids=None):
937
"""See Branch.add."""
938
# TODO: Re-adding a file that is removed in the working copy
939
# should probably put it back with the previous ID.
940
if isinstance(files, basestring):
941
assert(ids is None or isinstance(ids, basestring))
947
ids = [None] * len(files)
949
assert(len(ids) == len(files))
951
inv = self.working_tree().read_working_inventory()
952
for f,file_id in zip(files, ids):
953
if is_control_file(f):
954
raise BzrError("cannot add control file %s" % quotefn(f))
959
raise BzrError("cannot add top-level %r" % f)
961
fullpath = os.path.normpath(self.abspath(f))
964
kind = file_kind(fullpath)
966
# maybe something better?
967
raise BzrError('cannot add: not a regular file, symlink or directory: %s' % quotefn(f))
969
if not InventoryEntry.versionable_kind(kind):
970
raise BzrError('cannot add: not a versionable file ('
971
'i.e. regular file, symlink or directory): %s' % quotefn(f))
974
file_id = gen_file_id(f)
975
inv.add_path(f, kind=kind, file_id=file_id)
977
mutter("add file %s file_id:{%s} kind=%r" % (f, file_id, kind))
979
self._write_inventory(inv)
982
def print_file(self, file, revno):
983
"""See Branch.print_file."""
984
tree = self.revision_tree(self.get_rev_id(revno))
985
# use inventory as it was in that revision
986
file_id = tree.inventory.path2id(file)
988
raise BzrError("%r is not present in revision %s" % (file, revno))
989
tree.print_file(file_id)
992
"""See Branch.unknowns."""
993
return self.working_tree().unknowns()
996
def append_revision(self, *revision_ids):
997
"""See Branch.append_revision."""
998
for revision_id in revision_ids:
999
mutter("add {%s} to revision-history" % revision_id)
1000
rev_history = self.revision_history()
1001
rev_history.extend(revision_ids)
1002
self.set_revision_history(rev_history)
1005
def set_revision_history(self, rev_history):
1006
"""See Branch.set_revision_history."""
1007
self.put_controlfile('revision-history', '\n'.join(rev_history))
1009
def has_revision(self, revision_id):
1010
"""See Branch.has_revision."""
1011
return (revision_id is None
1012
or self.revision_store.has_id(revision_id))
1015
def get_revision_xml_file(self, revision_id):
1016
"""See Branch.get_revision_xml_file."""
1017
if not revision_id or not isinstance(revision_id, basestring):
1018
raise InvalidRevisionId(revision_id=revision_id, branch=self)
1020
return self.revision_store.get(revision_id)
1021
except (IndexError, KeyError):
1022
raise bzrlib.errors.NoSuchRevision(self, revision_id)
1025
get_revision_xml = get_revision_xml_file
1027
def get_revision_xml(self, revision_id):
1028
"""See Branch.get_revision_xml."""
1029
return self.get_revision_xml_file(revision_id).read()
1032
def get_revision(self, revision_id):
1033
"""See Branch.get_revision."""
1034
xml_file = self.get_revision_xml_file(revision_id)
1037
r = bzrlib.xml5.serializer_v5.read_revision(xml_file)
1038
except SyntaxError, e:
1039
raise bzrlib.errors.BzrError('failed to unpack revision_xml',
1043
assert r.revision_id == revision_id
1046
def get_revision_sha1(self, revision_id):
1047
"""See Branch.get_revision_sha1."""
1048
# In the future, revision entries will be signed. At that
1049
# point, it is probably best *not* to include the signature
1050
# in the revision hash. Because that lets you re-sign
1051
# the revision, (add signatures/remove signatures) and still
1052
# have all hash pointers stay consistent.
1053
# But for now, just hash the contents.
1054
return bzrlib.osutils.sha_file(self.get_revision_xml_file(revision_id))
1056
def get_ancestry(self, revision_id):
1057
"""See Branch.get_ancestry."""
1058
if revision_id is None:
1060
w = self._get_inventory_weave()
1061
return [None] + map(w.idx_to_name,
1062
w.inclusions([w.lookup(revision_id)]))
1064
def _get_inventory_weave(self):
1065
return self.control_weaves.get_weave('inventory',
1066
self.get_transaction())
1068
def get_inventory(self, revision_id):
1069
"""See Branch.get_inventory."""
1070
xml = self.get_inventory_xml(revision_id)
1071
return bzrlib.xml5.serializer_v5.read_inventory_from_string(xml)
1073
def get_inventory_xml(self, revision_id):
1074
"""See Branch.get_inventory_xml."""
1076
assert isinstance(revision_id, basestring), type(revision_id)
1077
iw = self._get_inventory_weave()
1078
return iw.get_text(iw.lookup(revision_id))
1080
raise bzrlib.errors.HistoryMissing(self, 'inventory', revision_id)
1082
def get_inventory_sha1(self, revision_id):
1083
"""See Branch.get_inventory_sha1."""
1084
return self.get_revision(revision_id).inventory_sha1
1086
def get_revision_inventory(self, revision_id):
1087
"""See Branch.get_revision_inventory."""
1088
# TODO: Unify this with get_inventory()
1089
# bzr 0.0.6 and later imposes the constraint that the inventory_id
1090
# must be the same as its revision, so this is trivial.
1091
if revision_id == None:
1092
# This does not make sense: if there is no revision,
1093
# then it is the current tree inventory surely ?!
1094
# and thus get_root_id() is something that looks at the last
1095
# commit on the branch, and the get_root_id is an inventory check.
1096
raise NotImplementedError
1097
# return Inventory(self.get_root_id())
1099
return self.get_inventory(revision_id)
1102
def revision_history(self):
1103
"""See Branch.revision_history."""
1104
transaction = self.get_transaction()
1105
history = transaction.map.find_revision_history()
1106
if history is not None:
1107
mutter("cache hit for revision-history in %s", self)
1108
return list(history)
1109
history = [l.rstrip('\r\n') for l in
1110
self.controlfile('revision-history', 'r').readlines()]
1111
transaction.map.add_revision_history(history)
1112
# this call is disabled because revision_history is
1113
# not really an object yet, and the transaction is for objects.
1114
# transaction.register_clean(history, precious=True)
1115
return list(history)
1117
def update_revisions(self, other, stop_revision=None):
1118
"""See Branch.update_revisions."""
1119
from bzrlib.fetch import greedy_fetch
1120
if stop_revision is None:
1121
stop_revision = other.last_revision()
1122
### Should this be checking is_ancestor instead of revision_history?
1123
if (stop_revision is not None and
1124
stop_revision in self.revision_history()):
1126
greedy_fetch(to_branch=self, from_branch=other,
1127
revision=stop_revision)
1128
pullable_revs = self.pullable_revisions(other, stop_revision)
1129
if len(pullable_revs) > 0:
1130
self.append_revision(*pullable_revs)
1132
def pullable_revisions(self, other, stop_revision):
1133
"""See Branch.pullable_revisions."""
1134
other_revno = other.revision_id_to_revno(stop_revision)
1136
return self.missing_revisions(other, other_revno)
1137
except DivergedBranches, e:
1139
pullable_revs = get_intervening_revisions(self.last_revision(),
1140
stop_revision, self)
1141
assert self.last_revision() not in pullable_revs
1142
return pullable_revs
1143
except bzrlib.errors.NotAncestor:
1144
if is_ancestor(self.last_revision(), stop_revision, self):
1149
def commit(self, *args, **kw):
1150
"""See Branch.commit."""
1151
from bzrlib.commit import Commit
1152
Commit().commit(self, *args, **kw)
1154
def revision_tree(self, revision_id):
1155
"""See Branch.revision_tree."""
1156
# TODO: refactor this to use an existing revision object
1157
# so we don't need to read it in twice.
1158
if revision_id == None or revision_id == NULL_REVISION:
1161
inv = self.get_revision_inventory(revision_id)
1162
return RevisionTree(self.weave_store, inv, revision_id)
1164
def working_tree(self):
1165
"""See Branch.working_tree."""
1166
from bzrlib.workingtree import WorkingTree
1167
# TODO: In the future, perhaps WorkingTree should utilize Transport
1168
# RobertCollins 20051003 - I don't think it should - working trees are
1169
# much more complex to keep consistent than our careful .bzr subset.
1170
# instead, we should say that working trees are local only, and optimise
1172
if self._transport.base.find('://') != -1:
1173
raise NoWorkingTree(self.base)
1174
return WorkingTree(self.base, branch=self)
1177
def pull(self, source, overwrite=False):
1178
"""See Branch.pull."""
1182
self.update_revisions(source)
1183
except DivergedBranches:
1186
self.set_revision_history(source.revision_history())
1191
def rename_one(self, from_rel, to_rel):
1192
"""See Branch.rename_one."""
1193
tree = self.working_tree()
1194
inv = tree.inventory
1195
if not tree.has_filename(from_rel):
1196
raise BzrError("can't rename: old working file %r does not exist" % from_rel)
1197
if tree.has_filename(to_rel):
1198
raise BzrError("can't rename: new working file %r already exists" % to_rel)
1200
file_id = inv.path2id(from_rel)
1202
raise BzrError("can't rename: old name %r is not versioned" % from_rel)
1204
if inv.path2id(to_rel):
1205
raise BzrError("can't rename: new name %r is already versioned" % to_rel)
1207
to_dir, to_tail = os.path.split(to_rel)
1208
to_dir_id = inv.path2id(to_dir)
1209
if to_dir_id == None and to_dir != '':
1210
raise BzrError("can't determine destination directory id for %r" % to_dir)
1212
mutter("rename_one:")
1213
mutter(" file_id {%s}" % file_id)
1214
mutter(" from_rel %r" % from_rel)
1215
mutter(" to_rel %r" % to_rel)
1216
mutter(" to_dir %r" % to_dir)
1217
mutter(" to_dir_id {%s}" % to_dir_id)
1219
inv.rename(file_id, to_dir_id, to_tail)
1221
from_abs = self.abspath(from_rel)
1222
to_abs = self.abspath(to_rel)
1224
rename(from_abs, to_abs)
1226
raise BzrError("failed to rename %r to %r: %s"
1227
% (from_abs, to_abs, e[1]),
1228
["rename rolled back"])
1230
self._write_inventory(inv)
1233
def move(self, from_paths, to_name):
1234
"""See Branch.move."""
1236
## TODO: Option to move IDs only
1237
assert not isinstance(from_paths, basestring)
1238
tree = self.working_tree()
1239
inv = tree.inventory
1240
to_abs = self.abspath(to_name)
1241
if not isdir(to_abs):
1242
raise BzrError("destination %r is not a directory" % to_abs)
1243
if not tree.has_filename(to_name):
1244
raise BzrError("destination %r not in working directory" % to_abs)
1245
to_dir_id = inv.path2id(to_name)
1246
if to_dir_id == None and to_name != '':
1247
raise BzrError("destination %r is not a versioned directory" % to_name)
1248
to_dir_ie = inv[to_dir_id]
1249
if to_dir_ie.kind not in ('directory', 'root_directory'):
1250
raise BzrError("destination %r is not a directory" % to_abs)
1252
to_idpath = inv.get_idpath(to_dir_id)
1254
for f in from_paths:
1255
if not tree.has_filename(f):
1256
raise BzrError("%r does not exist in working tree" % f)
1257
f_id = inv.path2id(f)
1259
raise BzrError("%r is not versioned" % f)
1260
name_tail = splitpath(f)[-1]
1261
dest_path = appendpath(to_name, name_tail)
1262
if tree.has_filename(dest_path):
1263
raise BzrError("destination %r already exists" % dest_path)
1264
if f_id in to_idpath:
1265
raise BzrError("can't move %r to a subdirectory of itself" % f)
1267
# OK, so there's a race here, it's possible that someone will
1268
# create a file in this interval and then the rename might be
1269
# left half-done. But we should have caught most problems.
1271
for f in from_paths:
1272
name_tail = splitpath(f)[-1]
1273
dest_path = appendpath(to_name, name_tail)
1274
result.append((f, dest_path))
1275
inv.rename(inv.path2id(f), to_dir_id, name_tail)
1277
rename(self.abspath(f), self.abspath(dest_path))
1279
raise BzrError("failed to rename %r to %r: %s" % (f, dest_path, e[1]),
1280
["rename rolled back"])
1282
self._write_inventory(inv)
1286
def revert(self, filenames, old_tree=None, backups=True):
1287
"""See Branch.revert."""
1288
from bzrlib.atomicfile import AtomicFile
1289
from bzrlib.osutils import backup_file
1291
inv = self.working_tree().read_working_inventory()
1292
if old_tree is None:
1293
old_tree = self.basis_tree()
1294
old_inv = old_tree.inventory
1297
for fn in filenames:
1298
file_id = inv.path2id(fn)
1300
raise NotVersionedError(path=fn)
1301
if not old_inv.has_id(file_id):
1302
raise BzrError("file not present in old tree", fn, file_id)
1303
nids.append((fn, file_id))
1305
# TODO: Rename back if it was previously at a different location
1307
# TODO: If given a directory, restore the entire contents from
1308
# the previous version.
1310
# TODO: Make a backup to a temporary file.
1312
# TODO: If the file previously didn't exist, delete it?
1313
for fn, file_id in nids:
1316
f = AtomicFile(fn, 'wb')
1318
f.write(old_tree.get_file(file_id).read())
1324
def pending_merges(self):
1325
"""See Branch.pending_merges."""
1326
cfn = self._rel_controlfilename('pending-merges')
1327
if not self._transport.has(cfn):
1330
for l in self.controlfile('pending-merges', 'r').readlines():
1331
p.append(l.rstrip('\n'))
1335
def add_pending_merge(self, *revision_ids):
1336
"""See Branch.add_pending_merge."""
1337
# TODO: Perhaps should check at this point that the
1338
# history of the revision is actually present?
1339
p = self.pending_merges()
1341
for rev_id in revision_ids:
1347
self.set_pending_merges(p)
1350
def set_pending_merges(self, rev_list):
1351
"""See Branch.set_pending_merges."""
1352
self.put_controlfile('pending-merges', '\n'.join(rev_list))
1354
def get_parent(self):
1355
"""See Branch.get_parent."""
1357
_locs = ['parent', 'pull', 'x-pull']
1360
return self.controlfile(l, 'r').read().strip('\n')
1362
if e.errno != errno.ENOENT:
1366
def get_push_location(self):
1367
"""See Branch.get_push_location."""
1368
config = bzrlib.config.BranchConfig(self)
1369
push_loc = config.get_user_option('push_location')
1372
def set_push_location(self, location):
1373
"""See Branch.set_push_location."""
1374
config = bzrlib.config.LocationConfig(self.base)
1375
config.set_user_option('push_location', location)
1378
def set_parent(self, url):
1379
"""See Branch.set_parent."""
1380
# TODO: Maybe delete old location files?
1381
from bzrlib.atomicfile import AtomicFile
1382
f = AtomicFile(self.controlfilename('parent'))
1389
def tree_config(self):
1390
return TreeConfig(self)
1392
def check_revno(self, revno):
1394
Check whether a revno corresponds to any revision.
1395
Zero (the NULL revision) is considered valid.
1398
self.check_real_revno(revno)
1400
def check_real_revno(self, revno):
1402
Check whether a revno corresponds to a real revision.
1403
Zero (the NULL revision) is considered invalid
1405
if revno < 1 or revno > self.revno():
1406
raise InvalidRevisionNumber(revno)
1408
def sign_revision(self, revision_id, gpg_strategy):
1409
"""See Branch.sign_revision."""
1410
plaintext = Testament.from_revision(self, revision_id).as_short_text()
1411
self.store_revision_signature(gpg_strategy, plaintext, revision_id)
1414
def store_revision_signature(self, gpg_strategy, plaintext, revision_id):
1415
"""See Branch.store_revision_signature."""
1416
self.revision_store.add(StringIO(gpg_strategy.sign(plaintext)),
1420
class ScratchBranch(BzrBranch):
1421
"""Special test class: a branch that cleans up after itself.
1423
>>> b = ScratchBranch()
1427
>>> b._transport.__del__()
1432
def __init__(self, files=[], dirs=[], transport=None):
1433
"""Make a test branch.
1435
This creates a temporary directory and runs init-tree in it.
1437
If any files are listed, they are created in the working copy.
1439
if transport is None:
1440
transport = bzrlib.transport.local.ScratchTransport()
1441
super(ScratchBranch, self).__init__(transport, init=True)
1443
super(ScratchBranch, self).__init__(transport)
1446
self._transport.mkdir(d)
1449
self._transport.put(f, 'content of %s' % f)
1454
>>> orig = ScratchBranch(files=["file1", "file2"])
1455
>>> clone = orig.clone()
1456
>>> if os.name != 'nt':
1457
... os.path.samefile(orig.base, clone.base)
1459
... orig.base == clone.base
1462
>>> os.path.isfile(os.path.join(clone.base, "file1"))
1465
from shutil import copytree
1466
from tempfile import mkdtemp
1469
copytree(self.base, base, symlinks=True)
1470
return ScratchBranch(
1471
transport=bzrlib.transport.local.ScratchTransport(base))
1474
######################################################################
1478
def is_control_file(filename):
1479
## FIXME: better check
1480
filename = os.path.normpath(filename)
1481
while filename != '':
1482
head, tail = os.path.split(filename)
1483
## mutter('check %r for control file' % ((head, tail), ))
1484
if tail == bzrlib.BZRDIR:
1486
if filename == head:
1493
def gen_file_id(name):
1494
"""Return new file id.
1496
This should probably generate proper UUIDs, but for the moment we
1497
cope with just randomness because running uuidgen every time is
1500
from binascii import hexlify
1501
from time import time
1503
# get last component
1504
idx = name.rfind('/')
1506
name = name[idx+1 : ]
1507
idx = name.rfind('\\')
1509
name = name[idx+1 : ]
1511
# make it not a hidden file
1512
name = name.lstrip('.')
1514
# remove any wierd characters; we don't escape them but rather
1515
# just pull them out
1516
name = re.sub(r'[^\w.]', '', name)
1518
s = hexlify(rand_bytes(8))
1519
return '-'.join((name, compact_date(time()), s))
1523
"""Return a new tree-root file id."""
1524
return gen_file_id('TREE_ROOT')