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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 copy import deepcopy
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from cStringIO import StringIO
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from unittest import TestSuite
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from warnings import warn
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import xml.sax.saxutils
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raise ImportError("We were unable to import 'xml.sax.saxutils',"
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" most likely you have an xml.pyc or xml.pyo file"
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" lying around in your bzrlib directory."
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from cStringIO import StringIO
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from bzrlib.config import TreeConfig
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from bzrlib.decorators import needs_read_lock, needs_write_lock
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from bzrlib.delta import compare_trees
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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,
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UninitializableFormat,
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UnlistableBranch, NoSuchFile, NotVersionedError,
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import bzrlib.inventory as inventory
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from bzrlib.inventory import Inventory
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from bzrlib.lockable_files import LockableFiles
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from bzrlib.osutils import (isdir, quotefn,
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rename, splitpath, sha_file,
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file_kind, abspath, normpath, pathjoin,
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from bzrlib.textui import show_status
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from bzrlib.trace import mutter, note
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from bzrlib.tree import EmptyTree, RevisionTree
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from bzrlib.repository import Repository
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from bzrlib.revision import (Revision, is_ancestor, get_intervening_revisions)
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from bzrlib.store import copy_all
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from bzrlib.symbol_versioning import *
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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 bzrlib.tree import EmptyTree, RevisionTree
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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. .. nb thats
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# what the transaction identity map provides
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######################################################################
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"""Branch holding a history of revisions.
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Base directory/url of the branch.
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# this is really an instance variable - FIXME move it there
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_default_initializer = None
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"""The default initializer for making new branches."""
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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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return Branch.open(base, _unsupported=True)
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def open(base, _unsupported=False):
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"""Open an existing branch, rooted at 'base' (url)
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_unsupported is a private parameter to the Branch class.
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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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format = BzrBranchFormat.find_format(t)
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if not _unsupported and not format.is_supported():
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# see open_downlevel to open legacy branches.
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raise errors.UnsupportedFormatError(
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'sorry, branch format %s not supported' % format,
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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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return format.open(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 and it is either an unrecognised format or an unsupported
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format, UnknownFormatError or UnsupportedFormatError are raised.
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If there is one, it is returned, along with the unused portion of url.
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t = get_transport(url)
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# this gets the normalised url back. I.e. '.' -> the full path.
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format = BzrBranchFormat.find_format(t)
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return format.open(t), t.relpath(url)
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except NotBranchError, e:
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mutter('not a branch in: %r %s', t.base, e)
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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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"""Create a new Branch at the url 'bzr'.
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This will call the current default initializer with base
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as the only parameter.
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return Branch._default_initializer(safe_unicode(base))
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@deprecated_function(zero_eight)
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def initialize(base):
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"""Create a new working tree and branch, rooted at 'base' (url)
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NOTE: This will soon be deprecated in favour of creation
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# imported here to prevent scope creep as this is going.
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from bzrlib.workingtree import WorkingTree
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return WorkingTree.create_standalone(safe_unicode(base)).branch
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def get_default_initializer():
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"""Return the initializer being used for new branches."""
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return Branch._default_initializer
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def set_default_initializer(initializer):
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"""Set the initializer to be used for new branches."""
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Branch._default_initializer = staticmethod(initializer)
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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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# seems to be unused, 2006-01-13 mbp
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warn('%s is deprecated' % self.setup_caching)
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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('/')[-2])
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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 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 peek_lock_mode(self):
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"""Return lock mode for the Branch: 'r', 'w' or None"""
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raise NotImplementedError(self.peek_lock_mode)
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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 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 print_file(self, file, revision_id):
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"""Print `file` to stdout."""
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raise NotImplementedError('print_file 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 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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>>> 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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>>> br2.working_tree().commit("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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>>> br1.working_tree().commit("lala!", rev_id="REVISION-ID-1")
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>>> br1.missing_revisions(br2)
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>>> br2.working_tree().commit("lala!", rev_id="REVISION-ID-2A")
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>>> br1.missing_revisions(br2)
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>>> br1.working_tree().commit("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. Try merge.
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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 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 working_tree(self):
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"""Return a `Tree` for the working copy if this is a local branch."""
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raise NotImplementedError('working_tree is abstract')
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def pull(self, source, overwrite=False, stop_revision=None):
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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.repository.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 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 clone(self, to_location, revision=None, basis_branch=None, to_branch_type=None):
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"""Copy this branch into the existing directory to_location.
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Returns the newly created branch object.
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If not None, only revisions up to this point will be copied.
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The head of the new branch will be that revision. Must be a
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to_location -- The destination directory; must either exist and be
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empty, or not exist, in which case it is created.
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A local branch to copy revisions from, related to this branch.
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This is used when branching from a remote (slow) branch, and we have
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a local branch that might contain some relevant revisions.
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Branch type of destination branch
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from bzrlib.workingtree import WorkingTree
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assert isinstance(to_location, basestring)
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if not bzrlib.osutils.lexists(to_location):
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os.mkdir(to_location)
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if to_branch_type is None:
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to_branch_type = BzrBranch
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# FIXME use a branch format here
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br_to = to_branch_type.initialize(to_location)
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mutter("copy branch from %s to %s", self, br_to)
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if basis_branch is not None:
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basis_branch.push_stores(br_to)
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revision = self.last_revision()
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br_to.update_revisions(self, stop_revision=revision)
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br_to.set_parent(self.base)
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WorkingTree.create(br_to, to_location).set_root_id(self.get_root_id())
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def fileid_involved_between_revs(self, from_revid, to_revid):
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""" This function returns the file_id(s) involved in the
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changes between the from_revid revision and the to_revid
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raise NotImplementedError('fileid_involved_between_revs is abstract')
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def fileid_involved(self, last_revid=None):
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""" This function returns the file_id(s) involved in the
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changes up to the revision last_revid
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If no parametr is passed, then all file_id[s] present in the
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repository are returned
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raise NotImplementedError('fileid_involved is abstract')
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def fileid_involved_by_set(self, changes):
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""" This function returns the file_id(s) involved in the
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changes present in the set 'changes'
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raise NotImplementedError('fileid_involved_by_set is abstract')
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def fileid_involved_between_revs(self, from_revid, to_revid):
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""" This function returns the file_id(s) involved in the
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changes between the from_revid revision and the to_revid
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raise NotImplementedError('fileid_involved_between_revs is abstract')
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def fileid_involved(self, last_revid=None):
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""" This function returns the file_id(s) involved in the
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changes up to the revision last_revid
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If no parametr is passed, then all file_id[s] present in the
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repository are returned
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raise NotImplementedError('fileid_involved is abstract')
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def fileid_involved_by_set(self, changes):
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""" This function returns the file_id(s) involved in the
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changes present in the set 'changes'
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raise NotImplementedError('fileid_involved_by_set is abstract')
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class BzrBranchFormat(object):
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"""An encapsulation of the initialization and open routines for a format.
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Formats provide three things:
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* An initialization routine,
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Formats are placed in an dict by their format string for reference
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during branch opening. Its not required that these be instances, they
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can be classes themselves with class methods - it simply depends on
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whether state is needed for a given format or not.
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Once a format is deprecated, just deprecate the initialize and open
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methods on the format class. Do not deprecate the object, as the
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object will be created every time regardless.
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"""The known formats."""
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def find_format(klass, transport):
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"""Return the format registered for URL."""
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format_string = transport.get(".bzr/branch-format").read()
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return klass._formats[format_string]
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raise NotBranchError(path=transport.base)
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raise errors.UnknownFormatError(format_string)
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def get_format_string(self):
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"""Return the ASCII format string that identifies this format."""
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raise NotImplementedError(self.get_format_string)
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def _find_modes(self, t):
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"""Determine the appropriate modes for files and directories.
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FIXME: When this merges into, or from storage,
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this code becomes delgatable to a LockableFiles instance.
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For now its cribbed and returns (dir_mode, file_mode)
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except errors.TransportNotPossible:
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dir_mode = st.st_mode & 07777
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# Remove the sticky and execute bits for files
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file_mode = dir_mode & ~07111
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if not BzrBranch._set_dir_mode:
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if not BzrBranch._set_file_mode:
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return dir_mode, file_mode
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def initialize(self, url):
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"""Create a branch of this format at url and return an open branch."""
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t = get_transport(url)
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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 weave
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bzrlib.weavefile.write_weave_v5(Weave(), sio)
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empty_weave = sio.getvalue()
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# Since we don't have a .bzr directory, inherit the
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# mode from the root directory
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temp_control = LockableFiles(t, '')
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temp_control._transport.mkdir('.bzr',
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mode=temp_control._dir_mode)
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file_mode = temp_control._file_mode
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mutter('created control directory in ' + t.base)
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control = t.clone('.bzr')
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dirs = ['revision-store', 'weaves']
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lock_file = 'branch-lock'
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utf8_files = [('README',
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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', self.get_format_string()),
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('revision-history', ''),
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files = [('inventory.weave', StringIO(empty_weave)),
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# FIXME: RBC 20060125 dont peek under the covers
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# NB: no need to escape relative paths that are url safe.
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control.put(lock_file, StringIO(), mode=file_mode)
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control_files = LockableFiles(control, lock_file)
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control_files.lock_write()
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control_files._transport.mkdir_multi(dirs,
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mode=control_files._dir_mode)
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for file, content in utf8_files:
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control_files.put_utf8(file, content)
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for file, content in files:
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control_files.put(file, content)
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control_files.unlock()
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return BzrBranch(t, _format=self, _control_files=control_files)
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def is_supported(self):
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"""Is this format supported?
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Supported formats can be initialized and opened.
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Unsupported formats may not support initialization or committing or
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some other features depending on the reason for not being supported.
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def open(self, transport):
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"""Fill out the data in branch for the branch at url."""
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return BzrBranch(transport, _format=self)
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def register_format(klass, format):
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klass._formats[format.get_format_string()] = format
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def unregister_format(klass, format):
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assert klass._formats[format.get_format_string()] is format
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del klass._formats[format.get_format_string()]
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class BzrBranchFormat4(BzrBranchFormat):
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"""Bzr branch format 4.
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- TextStores for texts, inventories,revisions.
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This format is deprecated: it indexes texts using a text it which is
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removed in format 5; write support for this format has been removed.
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def get_format_string(self):
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"""See BzrBranchFormat.get_format_string()."""
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return BZR_BRANCH_FORMAT_4
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def initialize(self, url):
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"""Format 4 branches cannot be created."""
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raise UninitializableFormat(self)
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def is_supported(self):
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"""Format 4 is not supported.
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It is not supported because the model changed from 4 to 5 and the
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conversion logic is expensive - so doing it on the fly was not
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class BzrBranchFormat5(BzrBranchFormat):
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"""Bzr branch format 5.
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- weaves for file texts and inventory
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- TextStores for revisions and signatures.
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def get_format_string(self):
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"""See BzrBranchFormat.get_format_string()."""
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return BZR_BRANCH_FORMAT_5
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class BzrBranchFormat6(BzrBranchFormat):
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"""Bzr branch format 6.
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- weaves for file texts and inventory
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- hash subdirectory based stores.
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- TextStores for revisions and signatures.
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def get_format_string(self):
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"""See BzrBranchFormat.get_format_string()."""
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return BZR_BRANCH_FORMAT_6
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BzrBranchFormat.register_format(BzrBranchFormat4())
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BzrBranchFormat.register_format(BzrBranchFormat5())
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BzrBranchFormat.register_format(BzrBranchFormat6())
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# TODO: jam 20060108 Create a new branch format, and as part of upgrade
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# make sure that ancestry.weave is deleted (it is never used, but
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# used to be created)
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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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# 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 (not isinstance(self._branch_format, BzrBranchFormat4) or
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self._branch_format != branch_to._branch_format):
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from bzrlib.fetch import greedy_fetch
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mutter("Using 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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# format 4 to format 4 logic only.
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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=DEPRECATED_PARAMETER,
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relax_version_check=DEPRECATED_PARAMETER, _format=None,
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_control_files=None):
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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
737
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.
743
assert isinstance(transport, Transport), \
744
"%r is not a Transport" % transport
745
self._transport = transport
746
self._base = self._transport.base
747
if _control_files is None:
748
_control_files = LockableFiles(self._transport.clone(bzrlib.BZRDIR),
750
self.control_files = _control_files
751
if deprecated_passed(init):
752
warn("BzrBranch.__init__(..., init=XXX): The init parameter is "
753
"deprecated as of bzr 0.8. Please use Branch.create().",
757
# this is slower than before deprecation, oh well never mind.
759
self._initialize(transport.base)
760
self._check_format(_format)
761
if deprecated_passed(relax_version_check):
762
warn("BzrBranch.__init__(..., relax_version_check=XXX_: The "
763
"relax_version_check parameter is deprecated as of bzr 0.8. "
764
"Please use Branch.open_downlevel, or a BzrBranchFormat's "
768
if (not relax_version_check
769
and not self._branch_format.is_supported()):
770
raise errors.UnsupportedFormatError(
771
'sorry, branch format %r not supported' % fmt,
772
['use a different bzr version',
773
'or remove the .bzr directory'
774
' and "bzr init" again'])
775
self.repository = Repository(transport, self._branch_format)
779
def _initialize(base):
780
"""Create a bzr branch in the latest format."""
781
return BzrBranchFormat6().initialize(base)
784
return '%s(%r)' % (self.__class__.__name__, self.base)
789
# TODO: It might be best to do this somewhere else,
790
# but it is nice for a Branch object to automatically
791
# cache it's information.
792
# Alternatively, we could have the Transport objects cache requests
793
# See the earlier discussion about how major objects (like Branch)
794
# should never expect their __del__ function to run.
795
# XXX: cache_root seems to be unused, 2006-01-13 mbp
796
if hasattr(self, 'cache_root') and self.cache_root is not None:
798
shutil.rmtree(self.cache_root)
801
self.cache_root = None
806
base = property(_get_base, doc="The URL for the root of this branch.")
808
def _finish_transaction(self):
809
"""Exit the current transaction."""
810
return self.control_files._finish_transaction()
812
def get_transaction(self):
813
"""Return the current active transaction.
815
If no transaction is active, this returns a passthrough object
816
for which all data is immediately flushed and no caching happens.
818
# this is an explicit function so that we can do tricky stuff
819
# when the storage in rev_storage is elsewhere.
820
# we probably need to hook the two 'lock a location' and
821
# 'have a transaction' together more delicately, so that
822
# we can have two locks (branch and storage) and one transaction
823
# ... and finishing the transaction unlocks both, but unlocking
824
# does not. - RBC 20051121
825
return self.control_files.get_transaction()
827
def _set_transaction(self, transaction):
828
"""Set a new active transaction."""
829
return self.control_files._set_transaction(transaction)
831
def abspath(self, name):
832
"""See Branch.abspath."""
833
return self.control_files._transport.abspath(name)
835
def _check_format(self, format):
836
"""Identify the branch format if needed.
838
The format is stored as a reference to the format object in
839
self._branch_format for code that needs to check it later.
841
The format parameter is either None or the branch format class
842
used to open this branch.
845
format = BzrBranchFormat.find_format(self._transport)
846
self._branch_format = format
847
mutter("got branch format %s", self._branch_format)
850
def get_root_id(self):
851
"""See Branch.get_root_id."""
852
tree = self.repository.revision_tree(self.last_revision())
853
return tree.inventory.root.file_id
855
def lock_write(self):
856
# TODO: test for failed two phase locks. This is known broken.
857
self.control_files.lock_write()
858
self.repository.lock_write()
861
# TODO: test for failed two phase locks. This is known broken.
862
self.control_files.lock_read()
863
self.repository.lock_read()
866
# TODO: test for failed two phase locks. This is known broken.
867
self.repository.unlock()
868
self.control_files.unlock()
870
def peek_lock_mode(self):
871
if self.control_files._lock_count == 0:
874
return self.control_files._lock_mode
877
def print_file(self, file, revision_id):
878
"""See Branch.print_file."""
879
return self.repository.print_file(file, revision_id)
882
def append_revision(self, *revision_ids):
883
"""See Branch.append_revision."""
884
for revision_id in revision_ids:
885
mutter("add {%s} to revision-history" % revision_id)
886
rev_history = self.revision_history()
887
rev_history.extend(revision_ids)
888
self.set_revision_history(rev_history)
891
def set_revision_history(self, rev_history):
892
"""See Branch.set_revision_history."""
893
self.control_files.put_utf8(
894
'revision-history', '\n'.join(rev_history))
896
def get_revision_delta(self, revno):
897
"""Return the delta for one revision.
899
The delta is relative to its mainline predecessor, or the
900
empty tree for revision 1.
902
assert isinstance(revno, int)
903
rh = self.revision_history()
904
if not (1 <= revno <= len(rh)):
905
raise InvalidRevisionNumber(revno)
907
# revno is 1-based; list is 0-based
909
new_tree = self.repository.revision_tree(rh[revno-1])
911
old_tree = EmptyTree()
913
old_tree = self.repository.revision_tree(rh[revno-2])
914
return compare_trees(old_tree, new_tree)
917
def revision_history(self):
918
"""See Branch.revision_history."""
919
# FIXME are transactions bound to control files ? RBC 20051121
920
transaction = self.get_transaction()
921
history = transaction.map.find_revision_history()
922
if history is not None:
923
mutter("cache hit for revision-history in %s", self)
925
history = [l.rstrip('\r\n') for l in
926
self.control_files.get_utf8('revision-history').readlines()]
927
transaction.map.add_revision_history(history)
928
# this call is disabled because revision_history is
929
# not really an object yet, and the transaction is for objects.
930
# transaction.register_clean(history, precious=True)
933
def update_revisions(self, other, stop_revision=None):
934
"""See Branch.update_revisions."""
935
from bzrlib.fetch import greedy_fetch
937
if stop_revision is None:
938
stop_revision = other.last_revision()
939
### Should this be checking is_ancestor instead of revision_history?
940
if (stop_revision is not None and
941
stop_revision in self.revision_history()):
943
greedy_fetch(to_branch=self, from_branch=other,
944
revision=stop_revision)
945
pullable_revs = self.pullable_revisions(other, stop_revision)
946
if len(pullable_revs) > 0:
947
self.append_revision(*pullable_revs)
949
def pullable_revisions(self, other, stop_revision):
950
"""See Branch.pullable_revisions."""
951
other_revno = other.revision_id_to_revno(stop_revision)
953
return self.missing_revisions(other, other_revno)
954
except DivergedBranches, e:
956
pullable_revs = get_intervening_revisions(self.last_revision(),
959
assert self.last_revision() not in pullable_revs
961
except bzrlib.errors.NotAncestor:
962
if is_ancestor(self.last_revision(), stop_revision, self):
967
def basis_tree(self):
968
"""See Branch.basis_tree."""
970
revision_id = self.revision_history()[-1]
971
# FIXME: This is an abstraction violation, the basis tree
972
# here as defined is on the working tree, the method should
973
# be too. The basis tree for a branch can be different than
974
# that for a working tree. RBC 20051207
975
xml = self.working_tree().read_basis_inventory(revision_id)
976
inv = bzrlib.xml5.serializer_v5.read_inventory_from_string(xml)
977
return RevisionTree(self.repository, inv, revision_id)
978
except (IndexError, NoSuchFile, NoWorkingTree), e:
979
return self.repository.revision_tree(self.last_revision())
981
def working_tree(self):
982
"""See Branch.working_tree."""
983
from bzrlib.workingtree import WorkingTree
984
from bzrlib.transport.local import LocalTransport
985
if (self.base.find('://') != -1 or
986
not isinstance(self._transport, LocalTransport)):
987
raise NoWorkingTree(self.base)
988
return WorkingTree(self.base, branch=self)
991
def pull(self, source, overwrite=False, stop_revision=None):
992
"""See Branch.pull."""
995
old_count = len(self.revision_history())
997
self.update_revisions(source,stop_revision)
998
except DivergedBranches:
1002
self.set_revision_history(source.revision_history())
1003
new_count = len(self.revision_history())
1004
return new_count - old_count
1008
def get_parent(self):
1009
"""See Branch.get_parent."""
1011
_locs = ['parent', 'pull', 'x-pull']
1014
return self.control_files.get_utf8(l).read().strip('\n')
1019
def get_push_location(self):
1020
"""See Branch.get_push_location."""
1021
config = bzrlib.config.BranchConfig(self)
1022
push_loc = config.get_user_option('push_location')
1025
def set_push_location(self, location):
1026
"""See Branch.set_push_location."""
1027
config = bzrlib.config.LocationConfig(self.base)
1028
config.set_user_option('push_location', location)
1031
def set_parent(self, url):
1032
"""See Branch.set_parent."""
1033
# TODO: Maybe delete old location files?
1034
# URLs should never be unicode, even on the local fs,
1035
# FIXUP this and get_parent in a future branch format bump:
1036
# read and rewrite the file, and have the new format code read
1037
# using .get not .get_utf8. RBC 20060125
1038
self.control_files.put_utf8('parent', url + '\n')
1040
def tree_config(self):
1041
return TreeConfig(self)
1043
def _get_truncated_history(self, revision_id):
1044
history = self.revision_history()
1045
if revision_id is None:
1048
idx = history.index(revision_id)
1050
raise InvalidRevisionId(revision_id=revision, branch=self)
1051
return history[:idx+1]
1054
def _clone_weave(self, to_location, revision=None, basis_branch=None):
1056
from bzrlib.workingtree import WorkingTree
1057
assert isinstance(to_location, basestring)
1058
if basis_branch is not None:
1059
note("basis_branch is not supported for fast weave copy yet.")
1061
history = self._get_truncated_history(revision)
1062
if not bzrlib.osutils.lexists(to_location):
1063
os.mkdir(to_location)
1064
branch_to = Branch.initialize(to_location)
1065
mutter("copy branch from %s to %s", self, branch_to)
1067
self.repository.copy(branch_to.repository)
1069
# must be done *after* history is copied across
1070
# FIXME duplicate code with base .clone().
1071
# .. would template method be useful here? RBC 20051207
1072
branch_to.set_parent(self.base)
1073
branch_to.append_revision(*history)
1074
# FIXME: this should be in workingtree.clone
1075
WorkingTree.create(branch_to, to_location).set_root_id(self.get_root_id())
1079
def clone(self, to_location, revision=None, basis_branch=None, to_branch_type=None):
1080
# FIXME: clone via create and fetch is probably faster when versioned
1082
if to_branch_type is None:
1083
to_branch_type = BzrBranch
1085
if to_branch_type == BzrBranch \
1086
and self.repository.weave_store.listable() \
1087
and self.repository.revision_store.listable():
1088
return self._clone_weave(to_location, revision, basis_branch)
1090
return Branch.clone(self, to_location, revision, basis_branch, to_branch_type)
1092
def fileid_involved_between_revs(self, from_revid, to_revid):
1093
"""Find file_id(s) which are involved in the changes between revisions.
1095
This determines the set of revisions which are involved, and then
1096
finds all file ids affected by those revisions.
1098
# TODO: jam 20060119 This code assumes that w.inclusions will
1099
# always be correct. But because of the presence of ghosts
1100
# it is possible to be wrong.
1101
# One specific example from Robert Collins:
1102
# Two branches, with revisions ABC, and AD
1103
# C is a ghost merge of D.
1104
# Inclusions doesn't recognize D as an ancestor.
1105
# If D is ever merged in the future, the weave
1106
# won't be fixed, because AD never saw revision C
1107
# to cause a conflict which would force a reweave.
1108
w = self.repository.get_inventory_weave()
1109
from_set = set(w.inclusions([w.lookup(from_revid)]))
1110
to_set = set(w.inclusions([w.lookup(to_revid)]))
1111
included = to_set.difference(from_set)
1112
changed = map(w.idx_to_name, included)
1113
return self._fileid_involved_by_set(changed)
1115
def fileid_involved(self, last_revid=None):
1116
"""Find all file_ids modified in the ancestry of last_revid.
1118
:param last_revid: If None, last_revision() will be used.
1120
w = self.repository.get_inventory_weave()
1122
changed = set(w._names)
1124
included = w.inclusions([w.lookup(last_revid)])
1125
changed = map(w.idx_to_name, included)
1126
return self._fileid_involved_by_set(changed)
1128
def fileid_involved_by_set(self, changes):
1129
"""Find all file_ids modified by the set of revisions passed in.
1131
:param changes: A set() of revision ids
1133
# TODO: jam 20060119 This line does *nothing*, remove it.
1134
# or better yet, change _fileid_involved_by_set so
1135
# that it takes the inventory weave, rather than
1136
# pulling it out by itself.
1137
w = self.repository.get_inventory_weave()
1138
return self._fileid_involved_by_set(changes)
1140
def _fileid_involved_by_set(self, changes):
1141
"""Find the set of file-ids affected by the set of revisions.
1143
:param changes: A set() of revision ids.
1144
:return: A set() of file ids.
1146
This peaks at the Weave, interpreting each line, looking to
1147
see if it mentions one of the revisions. And if so, includes
1148
the file id mentioned.
1149
This expects both the Weave format, and the serialization
1150
to have a single line per file/directory, and to have
1151
fileid="" and revision="" on that line.
1153
assert (isinstance(self._branch_format, BzrBranchFormat5) or
1154
isinstance(self._branch_format, BzrBranchFormat6)), \
1155
"fileid_involved only supported for branches which store inventory as xml"
1157
w = self.repository.get_inventory_weave()
1159
for line in w._weave:
1161
# it is ugly, but it is due to the weave structure
1162
if not isinstance(line, basestring): continue
1164
start = line.find('file_id="')+9
1165
if start < 9: continue
1166
end = line.find('"', start)
1168
file_id = xml.sax.saxutils.unescape(line[start:end])
1170
# check if file_id is already present
1171
if file_id in file_ids: continue
1173
start = line.find('revision="')+10
1174
if start < 10: continue
1175
end = line.find('"', start)
1177
revision_id = xml.sax.saxutils.unescape(line[start:end])
1179
if revision_id in changes:
1180
file_ids.add(file_id)
1185
Branch.set_default_initializer(BzrBranch._initialize)
1188
class BranchTestProviderAdapter(object):
1189
"""A tool to generate a suite testing multiple branch formats at once.
1191
This is done by copying the test once for each transport and injecting
1192
the transport_server, transport_readonly_server, and branch_format
1193
classes into each copy. Each copy is also given a new id() to make it
1197
def __init__(self, transport_server, transport_readonly_server, formats):
1198
self._transport_server = transport_server
1199
self._transport_readonly_server = transport_readonly_server
1200
self._formats = formats
1202
def adapt(self, test):
1203
result = TestSuite()
1204
for format in self._formats:
1205
new_test = deepcopy(test)
1206
new_test.transport_server = self._transport_server
1207
new_test.transport_readonly_server = self._transport_readonly_server
1208
new_test.branch_format = format
1209
def make_new_test_id():
1210
new_id = "%s(%s)" % (new_test.id(), format.__class__.__name__)
1211
return lambda: new_id
1212
new_test.id = make_new_test_id()
1213
result.addTest(new_test)
1217
class ScratchBranch(BzrBranch):
1218
"""Special test class: a branch that cleans up after itself.
1220
>>> b = ScratchBranch()
1224
>>> b._transport.__del__()
1229
def __init__(self, files=[], dirs=[], transport=None):
1230
"""Make a test branch.
1232
This creates a temporary directory and runs init-tree in it.
1234
If any files are listed, they are created in the working copy.
1236
if transport is None:
1237
transport = bzrlib.transport.local.ScratchTransport()
1238
# local import for scope restriction
1239
from bzrlib.workingtree import WorkingTree
1240
WorkingTree.create_standalone(transport.base)
1241
super(ScratchBranch, self).__init__(transport)
1243
super(ScratchBranch, self).__init__(transport)
1245
# BzrBranch creates a clone to .bzr and then forgets about the
1246
# original transport. A ScratchTransport() deletes itself and
1247
# everything underneath it when it goes away, so we need to
1248
# grab a local copy to prevent that from happening
1249
self._transport = transport
1252
self._transport.mkdir(d)
1255
self._transport.put(f, 'content of %s' % f)
1259
>>> orig = ScratchBranch(files=["file1", "file2"])
1260
>>> os.listdir(orig.base)
1261
[u'.bzr', u'file1', u'file2']
1262
>>> clone = orig.clone()
1263
>>> if os.name != 'nt':
1264
... os.path.samefile(orig.base, clone.base)
1266
... orig.base == clone.base
1269
>>> os.listdir(clone.base)
1270
[u'.bzr', u'file1', u'file2']
1272
from shutil import copytree
1273
from bzrlib.osutils import mkdtemp
1276
copytree(self.base, base, symlinks=True)
1277
return ScratchBranch(
1278
transport=bzrlib.transport.local.ScratchTransport(base))
1281
######################################################################
1285
def is_control_file(filename):
1286
## FIXME: better check
1287
filename = normpath(filename)
1288
while filename != '':
1289
head, tail = os.path.split(filename)
1290
## mutter('check %r for control file' % ((head, tail),))
1291
if tail == bzrlib.BZRDIR:
1293
if filename == head:
added
removed
bzrlib/branch.py
