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# Copyright (C) 2005-2010 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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"""Weave-era working tree objects."""
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from cStringIO import StringIO
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revision as _mod_revision,
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from bzrlib.transport.local import LocalTransport
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from bzrlib.workingtree import (
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class WorkingTreeFormat2(WorkingTreeFormat):
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"""The second working tree format.
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This format modified the hash cache from the format 1 hash cache.
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upgrade_recommended = True
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def get_format_description(self):
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"""See WorkingTreeFormat.get_format_description()."""
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return "Working tree format 2"
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def _stub_initialize_on_transport(self, transport, file_mode):
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"""Workaround: create control files for a remote working tree.
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This ensures that it can later be updated and dealt with locally,
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since BzrDirFormat6 and BzrDirFormat5 cannot represent dirs with
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no working tree. (See bug #43064).
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inv = inventory.Inventory()
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xml5.serializer_v5.write_inventory(inv, sio, working=True)
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transport.put_file('inventory', sio, file_mode)
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transport.put_bytes('pending-merges', '', file_mode)
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def initialize(self, a_bzrdir, revision_id=None, from_branch=None,
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accelerator_tree=None, hardlink=False):
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"""See WorkingTreeFormat.initialize()."""
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if not isinstance(a_bzrdir.transport, LocalTransport):
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raise errors.NotLocalUrl(a_bzrdir.transport.base)
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if from_branch is not None:
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branch = a_bzrdir.open_branch()
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if revision_id is None:
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revision_id = _mod_revision.ensure_null(branch.last_revision())
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branch.generate_revision_history(revision_id)
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inv = inventory.Inventory()
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wt = WorkingTree2(a_bzrdir.root_transport.local_abspath('.'),
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basis_tree = branch.repository.revision_tree(revision_id)
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if basis_tree.inventory.root is not None:
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wt.set_root_id(basis_tree.get_root_id())
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# set the parent list and cache the basis tree.
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if _mod_revision.is_null(revision_id):
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parent_trees = [(revision_id, basis_tree)]
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wt.set_parent_trees(parent_trees)
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transform.build_tree(basis_tree, wt)
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super(WorkingTreeFormat2, self).__init__()
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from bzrlib.plugins.weave_fmt.bzrdir import BzrDirFormat6
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self._matchingbzrdir = BzrDirFormat6()
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def open(self, a_bzrdir, _found=False):
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"""Return the WorkingTree object for a_bzrdir
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_found is a private parameter, do not use it. It is used to indicate
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if format probing has already been done.
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# we are being called directly and must probe.
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raise NotImplementedError
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if not isinstance(a_bzrdir.transport, LocalTransport):
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raise errors.NotLocalUrl(a_bzrdir.transport.base)
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wt = WorkingTree2(a_bzrdir.root_transport.local_abspath('.'),
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class WorkingTree2(WorkingTree):
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"""This is the Format 2 working tree.
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This was the first weave based working tree.
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- uses os locks for locking.
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- uses the branch last-revision.
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def __init__(self, *args, **kwargs):
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super(WorkingTree2, self).__init__(*args, **kwargs)
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# WorkingTree2 has more of a constraint that self._inventory must
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# exist. Because this is an older format, we don't mind the overhead
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# caused by the extra computation here.
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# Newer WorkingTree's should only have self._inventory set when they
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if self._inventory is None:
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self.read_working_inventory()
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def _get_check_refs(self):
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"""Return the references needed to perform a check of this tree."""
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return [('trees', self.last_revision())]
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def lock_tree_write(self):
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"""See WorkingTree.lock_tree_write().
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In Format2 WorkingTrees we have a single lock for the branch and tree
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so lock_tree_write() degrades to lock_write().
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:return: An object with an unlock method which will release the lock
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self.branch.lock_write()
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self._control_files.lock_write()
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# do non-implementation specific cleanup
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# we share control files:
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if self._control_files._lock_count == 3:
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# _inventory_is_modified is always False during a read lock.
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if self._inventory_is_modified:
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self._write_hashcache_if_dirty()
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# reverse order of locking.
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return self._control_files.unlock()
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# formats which have no format string are not discoverable
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# and not independently creatable, so are not registered.
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_legacy_formats = [WorkingTreeFormat2(),
added
removed
bzrlib/plugins/weave_fmt/workingtree.py
