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# Copyright (C) 2006-2011 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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from __future__ import absolute_import
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from stat import S_ISREG, S_IEXEC
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config as _mod_config,
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lazy_import.lazy_import(globals(), """
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revision as _mod_revision,
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from bzrlib.i18n import gettext
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from bzrlib.errors import (DuplicateKey, MalformedTransform,
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ReusingTransform, CantMoveRoot,
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ImmortalLimbo, NoFinalPath,
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from bzrlib.filters import filtered_output_bytes, ContentFilterContext
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from bzrlib.mutabletree import MutableTree
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from bzrlib.osutils import (
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from bzrlib.progress import ProgressPhase
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from bzrlib.symbol_versioning import (
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ROOT_PARENT = "root-parent"
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def unique_add(map, key, value):
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raise DuplicateKey(key=key)
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class _TransformResults(object):
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def __init__(self, modified_paths, rename_count):
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self.modified_paths = modified_paths
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self.rename_count = rename_count
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class TreeTransformBase(object):
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"""The base class for TreeTransform and its kin."""
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def __init__(self, tree, pb=None,
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:param tree: The tree that will be transformed, but not necessarily
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:param case_sensitive: If True, the target of the transform is
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case sensitive, not just case preserving.
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object.__init__(self)
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# mapping of trans_id -> new basename
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# mapping of trans_id -> new parent trans_id
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self._new_parent = {}
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# mapping of trans_id with new contents -> new file_kind
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self._new_contents = {}
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# mapping of trans_id => (sha1 of content, stat_value)
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self._observed_sha1s = {}
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# Set of trans_ids whose contents will be removed
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self._removed_contents = set()
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# Mapping of trans_id -> new execute-bit value
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self._new_executability = {}
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# Mapping of trans_id -> new tree-reference value
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self._new_reference_revision = {}
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# Mapping of trans_id -> new file_id
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# Mapping of old file-id -> trans_id
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self._non_present_ids = {}
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# Mapping of new file_id -> trans_id
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# Set of trans_ids that will be removed
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self._removed_id = set()
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# Mapping of path in old tree -> trans_id
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self._tree_path_ids = {}
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# Mapping trans_id -> path in old tree
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self._tree_id_paths = {}
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# The trans_id that will be used as the tree root
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root_id = tree.get_root_id()
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if root_id is not None:
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self._new_root = self.trans_id_tree_file_id(root_id)
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self._new_root = None
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# Indicator of whether the transform has been applied
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# Whether the target is case sensitive
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self._case_sensitive_target = case_sensitive
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# A counter of how many files have been renamed
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self.rename_count = 0
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"""Support Context Manager API."""
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def __exit__(self, exc_type, exc_val, exc_tb):
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"""Support Context Manager API."""
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"""Release the working tree lock, if held.
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This is required if apply has not been invoked, but can be invoked
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if self._tree is None:
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for hook in MutableTree.hooks['post_transform']:
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hook(self._tree, self)
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def __get_root(self):
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return self._new_root
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root = property(__get_root)
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def _assign_id(self):
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"""Produce a new tranform id"""
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new_id = "new-%s" % self._id_number
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def create_path(self, name, parent):
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"""Assign a transaction id to a new path"""
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trans_id = self._assign_id()
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unique_add(self._new_name, trans_id, name)
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unique_add(self._new_parent, trans_id, parent)
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def adjust_path(self, name, parent, trans_id):
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"""Change the path that is assigned to a transaction id."""
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raise ValueError("Parent trans-id may not be None")
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if trans_id == self._new_root:
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self._new_name[trans_id] = name
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self._new_parent[trans_id] = parent
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def adjust_root_path(self, name, parent):
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"""Emulate moving the root by moving all children, instead.
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We do this by undoing the association of root's transaction id with the
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current tree. This allows us to create a new directory with that
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transaction id. We unversion the root directory and version the
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physically new directory, and hope someone versions the tree root
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old_root = self._new_root
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old_root_file_id = self.final_file_id(old_root)
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# force moving all children of root
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for child_id in self.iter_tree_children(old_root):
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if child_id != parent:
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self.adjust_path(self.final_name(child_id),
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self.final_parent(child_id), child_id)
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file_id = self.final_file_id(child_id)
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if file_id is not None:
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self.unversion_file(child_id)
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self.version_file(file_id, child_id)
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# the physical root needs a new transaction id
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self._tree_path_ids.pop("")
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self._tree_id_paths.pop(old_root)
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self._new_root = self.trans_id_tree_file_id(self._tree.get_root_id())
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if parent == old_root:
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parent = self._new_root
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self.adjust_path(name, parent, old_root)
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self.create_directory(old_root)
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self.version_file(old_root_file_id, old_root)
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self.unversion_file(self._new_root)
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def fixup_new_roots(self):
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"""Reinterpret requests to change the root directory
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Instead of creating a root directory, or moving an existing directory,
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all the attributes and children of the new root are applied to the
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existing root directory.
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This means that the old root trans-id becomes obsolete, so it is
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recommended only to invoke this after the root trans-id has become
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new_roots = [k for k, v in self._new_parent.iteritems() if v ==
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if len(new_roots) < 1:
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if len(new_roots) != 1:
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raise ValueError('A tree cannot have two roots!')
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if self._new_root is None:
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self._new_root = new_roots[0]
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old_new_root = new_roots[0]
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# unversion the new root's directory.
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if self.final_kind(self._new_root) is None:
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file_id = self.final_file_id(old_new_root)
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file_id = self.final_file_id(self._new_root)
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if old_new_root in self._new_id:
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self.cancel_versioning(old_new_root)
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self.unversion_file(old_new_root)
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# if, at this stage, root still has an old file_id, zap it so we can
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# stick a new one in.
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if (self.tree_file_id(self._new_root) is not None and
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self._new_root not in self._removed_id):
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self.unversion_file(self._new_root)
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if file_id is not None:
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self.version_file(file_id, self._new_root)
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# Now move children of new root into old root directory.
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# Ensure all children are registered with the transaction, but don't
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# use directly-- some tree children have new parents
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list(self.iter_tree_children(old_new_root))
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# Move all children of new root into old root directory.
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for child in self.by_parent().get(old_new_root, []):
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self.adjust_path(self.final_name(child), self._new_root, child)
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# Ensure old_new_root has no directory.
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if old_new_root in self._new_contents:
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self.cancel_creation(old_new_root)
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self.delete_contents(old_new_root)
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# prevent deletion of root directory.
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if self._new_root in self._removed_contents:
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self.cancel_deletion(self._new_root)
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# destroy path info for old_new_root.
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del self._new_parent[old_new_root]
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del self._new_name[old_new_root]
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def trans_id_tree_file_id(self, inventory_id):
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"""Determine the transaction id of a working tree file.
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This reflects only files that already exist, not ones that will be
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added by transactions.
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if inventory_id is None:
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raise ValueError('None is not a valid file id')
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path = self._tree.id2path(inventory_id)
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return self.trans_id_tree_path(path)
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def trans_id_file_id(self, file_id):
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"""Determine or set the transaction id associated with a file ID.
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A new id is only created for file_ids that were never present. If
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a transaction has been unversioned, it is deliberately still returned.
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(this will likely lead to an unversioned parent conflict.)
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raise ValueError('None is not a valid file id')
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if file_id in self._r_new_id and self._r_new_id[file_id] is not None:
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return self._r_new_id[file_id]
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self._tree.iter_entries_by_dir([file_id]).next()
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except StopIteration:
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if file_id in self._non_present_ids:
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return self._non_present_ids[file_id]
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trans_id = self._assign_id()
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self._non_present_ids[file_id] = trans_id
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return self.trans_id_tree_file_id(file_id)
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def trans_id_tree_path(self, path):
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"""Determine (and maybe set) the transaction ID for a tree path."""
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path = self.canonical_path(path)
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if path not in self._tree_path_ids:
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self._tree_path_ids[path] = self._assign_id()
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self._tree_id_paths[self._tree_path_ids[path]] = path
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return self._tree_path_ids[path]
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def get_tree_parent(self, trans_id):
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"""Determine id of the parent in the tree."""
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path = self._tree_id_paths[trans_id]
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return self.trans_id_tree_path(os.path.dirname(path))
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def delete_contents(self, trans_id):
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"""Schedule the contents of a path entry for deletion"""
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kind = self.tree_kind(trans_id)
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self._removed_contents.add(trans_id)
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def cancel_deletion(self, trans_id):
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"""Cancel a scheduled deletion"""
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self._removed_contents.remove(trans_id)
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def unversion_file(self, trans_id):
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"""Schedule a path entry to become unversioned"""
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self._removed_id.add(trans_id)
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def delete_versioned(self, trans_id):
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"""Delete and unversion a versioned file"""
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self.delete_contents(trans_id)
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self.unversion_file(trans_id)
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def set_executability(self, executability, trans_id):
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"""Schedule setting of the 'execute' bit
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To unschedule, set to None
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if executability is None:
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del self._new_executability[trans_id]
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unique_add(self._new_executability, trans_id, executability)
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def set_tree_reference(self, revision_id, trans_id):
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"""Set the reference associated with a directory"""
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unique_add(self._new_reference_revision, trans_id, revision_id)
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def version_file(self, file_id, trans_id):
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"""Schedule a file to become versioned."""
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unique_add(self._new_id, trans_id, file_id)
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unique_add(self._r_new_id, file_id, trans_id)
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def cancel_versioning(self, trans_id):
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"""Undo a previous versioning of a file"""
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file_id = self._new_id[trans_id]
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del self._new_id[trans_id]
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del self._r_new_id[file_id]
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def new_paths(self, filesystem_only=False):
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"""Determine the paths of all new and changed files.
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:param filesystem_only: if True, only calculate values for files
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that require renames or execute bit changes.
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stale_ids = self._needs_rename.difference(self._new_name)
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stale_ids.difference_update(self._new_parent)
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stale_ids.difference_update(self._new_contents)
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stale_ids.difference_update(self._new_id)
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needs_rename = self._needs_rename.difference(stale_ids)
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id_sets = (needs_rename, self._new_executability)
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id_sets = (self._new_name, self._new_parent, self._new_contents,
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self._new_id, self._new_executability)
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for id_set in id_sets:
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new_ids.update(id_set)
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return sorted(FinalPaths(self).get_paths(new_ids))
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def _inventory_altered(self):
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"""Determine which trans_ids need new Inventory entries.
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An new entry is needed when anything that would be reflected by an
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inventory entry changes, including file name, file_id, parent file_id,
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file kind, and the execute bit.
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Some care is taken to return entries with real changes, not cases
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where the value is deleted and then restored to its original value,
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but some actually unchanged values may be returned.
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:returns: A list of (path, trans_id) for all items requiring an
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inventory change. Ordered by path.
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# Find entries whose file_ids are new (or changed).
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new_file_id = set(t for t in self._new_id
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if self._new_id[t] != self.tree_file_id(t))
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for id_set in [self._new_name, self._new_parent, new_file_id,
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self._new_executability]:
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changed_ids.update(id_set)
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# removing implies a kind change
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changed_kind = set(self._removed_contents)
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changed_kind.intersection_update(self._new_contents)
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# Ignore entries that are already known to have changed.
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changed_kind.difference_update(changed_ids)
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# to keep only the truly changed ones
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changed_kind = (t for t in changed_kind
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if self.tree_kind(t) != self.final_kind(t))
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# all kind changes will alter the inventory
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changed_ids.update(changed_kind)
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# To find entries with changed parent_ids, find parents which existed,
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# but changed file_id.
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changed_file_id = set(t for t in new_file_id if t in self._removed_id)
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# Now add all their children to the set.
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for parent_trans_id in new_file_id:
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changed_ids.update(self.iter_tree_children(parent_trans_id))
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return sorted(FinalPaths(self).get_paths(changed_ids))
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def final_kind(self, trans_id):
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"""Determine the final file kind, after any changes applied.
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:return: None if the file does not exist/has no contents. (It is
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conceivable that a path would be created without the corresponding
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contents insertion command)
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if trans_id in self._new_contents:
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return self._new_contents[trans_id]
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elif trans_id in self._removed_contents:
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return self.tree_kind(trans_id)
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def tree_file_id(self, trans_id):
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"""Determine the file id associated with the trans_id in the tree"""
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path = self._tree_id_paths[trans_id]
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# the file is a new, unversioned file, or invalid trans_id
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# the file is old; the old id is still valid
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if self._new_root == trans_id:
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return self._tree.get_root_id()
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return self._tree.path2id(path)
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def final_file_id(self, trans_id):
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"""Determine the file id after any changes are applied, or None.
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None indicates that the file will not be versioned after changes are
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return self._new_id[trans_id]
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if trans_id in self._removed_id:
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return self.tree_file_id(trans_id)
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def inactive_file_id(self, trans_id):
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"""Return the inactive file_id associated with a transaction id.
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That is, the one in the tree or in non_present_ids.
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The file_id may actually be active, too.
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file_id = self.tree_file_id(trans_id)
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if file_id is not None:
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for key, value in self._non_present_ids.iteritems():
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if value == trans_id:
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def final_parent(self, trans_id):
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"""Determine the parent file_id, after any changes are applied.
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ROOT_PARENT is returned for the tree root.
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return self._new_parent[trans_id]
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return self.get_tree_parent(trans_id)
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def final_name(self, trans_id):
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"""Determine the final filename, after all changes are applied."""
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return self._new_name[trans_id]
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return os.path.basename(self._tree_id_paths[trans_id])
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raise NoFinalPath(trans_id, self)
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"""Return a map of parent: children for known parents.
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Only new paths and parents of tree files with assigned ids are used.
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items = list(self._new_parent.iteritems())
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items.extend((t, self.final_parent(t)) for t in
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self._tree_id_paths.keys())
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for trans_id, parent_id in items:
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if parent_id not in by_parent:
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by_parent[parent_id] = set()
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by_parent[parent_id].add(trans_id)
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def path_changed(self, trans_id):
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"""Return True if a trans_id's path has changed."""
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return (trans_id in self._new_name) or (trans_id in self._new_parent)
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def new_contents(self, trans_id):
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return (trans_id in self._new_contents)
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def find_conflicts(self):
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"""Find any violations of inventory or filesystem invariants"""
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if self._done is True:
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raise ReusingTransform()
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# ensure all children of all existent parents are known
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# all children of non-existent parents are known, by definition.
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self._add_tree_children()
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by_parent = self.by_parent()
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conflicts.extend(self._unversioned_parents(by_parent))
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conflicts.extend(self._parent_loops())
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conflicts.extend(self._duplicate_entries(by_parent))
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conflicts.extend(self._duplicate_ids())
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conflicts.extend(self._parent_type_conflicts(by_parent))
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conflicts.extend(self._improper_versioning())
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conflicts.extend(self._executability_conflicts())
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conflicts.extend(self._overwrite_conflicts())
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def _check_malformed(self):
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conflicts = self.find_conflicts()
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if len(conflicts) != 0:
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raise MalformedTransform(conflicts=conflicts)
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def _add_tree_children(self):
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"""Add all the children of all active parents to the known paths.
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Active parents are those which gain children, and those which are
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removed. This is a necessary first step in detecting conflicts.
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parents = self.by_parent().keys()
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parents.extend([t for t in self._removed_contents if
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self.tree_kind(t) == 'directory'])
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for trans_id in self._removed_id:
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file_id = self.tree_file_id(trans_id)
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if file_id is not None:
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if self._tree.stored_kind(file_id) == 'directory':
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parents.append(trans_id)
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elif self.tree_kind(trans_id) == 'directory':
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parents.append(trans_id)
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for parent_id in parents:
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# ensure that all children are registered with the transaction
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list(self.iter_tree_children(parent_id))
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@deprecated_method(deprecated_in((2, 3, 0)))
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def has_named_child(self, by_parent, parent_id, name):
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return self._has_named_child(
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name, parent_id, known_children=by_parent.get(parent_id, []))
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def _has_named_child(self, name, parent_id, known_children):
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"""Does a parent already have a name child.
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:param name: The searched for name.
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:param parent_id: The parent for which the check is made.
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:param known_children: The already known children. This should have
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been recently obtained from `self.by_parent.get(parent_id)`
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(or will be if None is passed).
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if known_children is None:
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known_children = self.by_parent().get(parent_id, [])
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for child in known_children:
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if self.final_name(child) == name:
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parent_path = self._tree_id_paths.get(parent_id, None)
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if parent_path is None:
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# No parent... no children
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child_path = joinpath(parent_path, name)
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child_id = self._tree_path_ids.get(child_path, None)
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# Not known by the tree transform yet, check the filesystem
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return osutils.lexists(self._tree.abspath(child_path))
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raise AssertionError('child_id is missing: %s, %s, %s'
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% (name, parent_id, child_id))
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def _available_backup_name(self, name, target_id):
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"""Find an available backup name.
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:param name: The basename of the file.
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:param target_id: The directory trans_id where the backup should
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known_children = self.by_parent().get(target_id, [])
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return osutils.available_backup_name(
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lambda base: self._has_named_child(
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base, target_id, known_children))
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def _parent_loops(self):
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"""No entry should be its own ancestor"""
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for trans_id in self._new_parent:
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while parent_id != ROOT_PARENT:
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parent_id = self.final_parent(parent_id)
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if parent_id == trans_id:
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conflicts.append(('parent loop', trans_id))
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if parent_id in seen:
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def _unversioned_parents(self, by_parent):
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"""If parent directories are versioned, children must be versioned."""
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for parent_id, children in by_parent.iteritems():
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if parent_id == ROOT_PARENT:
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if self.final_file_id(parent_id) is not None:
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for child_id in children:
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if self.final_file_id(child_id) is not None:
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conflicts.append(('unversioned parent', parent_id))
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def _improper_versioning(self):
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"""Cannot version a file with no contents, or a bad type.
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However, existing entries with no contents are okay.
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for trans_id in self._new_id.iterkeys():
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kind = self.final_kind(trans_id)
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conflicts.append(('versioning no contents', trans_id))
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if not inventory.InventoryEntry.versionable_kind(kind):
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conflicts.append(('versioning bad kind', trans_id, kind))
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def _executability_conflicts(self):
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"""Check for bad executability changes.
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Only versioned files may have their executability set, because
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1. only versioned entries can have executability under windows
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2. only files can be executable. (The execute bit on a directory
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does not indicate searchability)
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for trans_id in self._new_executability:
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if self.final_file_id(trans_id) is None:
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conflicts.append(('unversioned executability', trans_id))
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if self.final_kind(trans_id) != "file":
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conflicts.append(('non-file executability', trans_id))
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def _overwrite_conflicts(self):
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"""Check for overwrites (not permitted on Win32)"""
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for trans_id in self._new_contents:
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if self.tree_kind(trans_id) is None:
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if trans_id not in self._removed_contents:
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conflicts.append(('overwrite', trans_id,
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self.final_name(trans_id)))
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def _duplicate_entries(self, by_parent):
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"""No directory may have two entries with the same name."""
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if (self._new_name, self._new_parent) == ({}, {}):
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for children in by_parent.itervalues():
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for child_tid in children:
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name = self.final_name(child_tid)
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# Keep children only if they still exist in the end
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if not self._case_sensitive_target:
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name_ids.append((name, child_tid))
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for name, trans_id in name_ids:
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kind = self.final_kind(trans_id)
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file_id = self.final_file_id(trans_id)
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if kind is None and file_id is None:
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if name == last_name:
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conflicts.append(('duplicate', last_trans_id, trans_id,
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last_trans_id = trans_id
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def _duplicate_ids(self):
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"""Each inventory id may only be used once"""
733
removed_tree_ids = set((self.tree_file_id(trans_id) for trans_id in
735
all_ids = self._tree.all_file_ids()
736
active_tree_ids = all_ids.difference(removed_tree_ids)
737
for trans_id, file_id in self._new_id.iteritems():
738
if file_id in active_tree_ids:
739
old_trans_id = self.trans_id_tree_file_id(file_id)
740
conflicts.append(('duplicate id', old_trans_id, trans_id))
743
def _parent_type_conflicts(self, by_parent):
744
"""Children must have a directory parent"""
746
for parent_id, children in by_parent.iteritems():
747
if parent_id == ROOT_PARENT:
750
for child_id in children:
751
if self.final_kind(child_id) is not None:
756
# There is at least a child, so we need an existing directory to
758
kind = self.final_kind(parent_id)
760
# The directory will be deleted
761
conflicts.append(('missing parent', parent_id))
762
elif kind != "directory":
763
# Meh, we need a *directory* to put something in it
764
conflicts.append(('non-directory parent', parent_id))
767
def _set_executability(self, path, trans_id):
768
"""Set the executability of versioned files """
769
if self._tree._supports_executable():
770
new_executability = self._new_executability[trans_id]
771
abspath = self._tree.abspath(path)
772
current_mode = os.stat(abspath).st_mode
773
if new_executability:
776
to_mode = current_mode | (0100 & ~umask)
777
# Enable x-bit for others only if they can read it.
778
if current_mode & 0004:
779
to_mode |= 0001 & ~umask
780
if current_mode & 0040:
781
to_mode |= 0010 & ~umask
783
to_mode = current_mode & ~0111
784
osutils.chmod_if_possible(abspath, to_mode)
786
def _new_entry(self, name, parent_id, file_id):
787
"""Helper function to create a new filesystem entry."""
788
trans_id = self.create_path(name, parent_id)
789
if file_id is not None:
790
self.version_file(file_id, trans_id)
793
def new_file(self, name, parent_id, contents, file_id=None,
794
executable=None, sha1=None):
795
"""Convenience method to create files.
797
name is the name of the file to create.
798
parent_id is the transaction id of the parent directory of the file.
799
contents is an iterator of bytestrings, which will be used to produce
801
:param file_id: The inventory ID of the file, if it is to be versioned.
802
:param executable: Only valid when a file_id has been supplied.
804
trans_id = self._new_entry(name, parent_id, file_id)
805
# TODO: rather than scheduling a set_executable call,
806
# have create_file create the file with the right mode.
807
self.create_file(contents, trans_id, sha1=sha1)
808
if executable is not None:
809
self.set_executability(executable, trans_id)
812
def new_directory(self, name, parent_id, file_id=None):
813
"""Convenience method to create directories.
815
name is the name of the directory to create.
816
parent_id is the transaction id of the parent directory of the
818
file_id is the inventory ID of the directory, if it is to be versioned.
820
trans_id = self._new_entry(name, parent_id, file_id)
821
self.create_directory(trans_id)
824
def new_symlink(self, name, parent_id, target, file_id=None):
825
"""Convenience method to create symbolic link.
827
name is the name of the symlink to create.
828
parent_id is the transaction id of the parent directory of the symlink.
829
target is a bytestring of the target of the symlink.
830
file_id is the inventory ID of the file, if it is to be versioned.
832
trans_id = self._new_entry(name, parent_id, file_id)
833
self.create_symlink(target, trans_id)
836
def new_orphan(self, trans_id, parent_id):
837
"""Schedule an item to be orphaned.
839
When a directory is about to be removed, its children, if they are not
840
versioned are moved out of the way: they don't have a parent anymore.
842
:param trans_id: The trans_id of the existing item.
843
:param parent_id: The parent trans_id of the item.
845
raise NotImplementedError(self.new_orphan)
847
def _get_potential_orphans(self, dir_id):
848
"""Find the potential orphans in a directory.
850
A directory can't be safely deleted if there are versioned files in it.
851
If all the contained files are unversioned then they can be orphaned.
853
The 'None' return value means that the directory contains at least one
854
versioned file and should not be deleted.
856
:param dir_id: The directory trans id.
858
:return: A list of the orphan trans ids or None if at least one
859
versioned file is present.
862
# Find the potential orphans, stop if one item should be kept
863
for child_tid in self.by_parent()[dir_id]:
864
if child_tid in self._removed_contents:
865
# The child is removed as part of the transform. Since it was
866
# versioned before, it's not an orphan
868
elif self.final_file_id(child_tid) is None:
869
# The child is not versioned
870
orphans.append(child_tid)
872
# We have a versioned file here, searching for orphans is
878
def _affected_ids(self):
879
"""Return the set of transform ids affected by the transform"""
880
trans_ids = set(self._removed_id)
881
trans_ids.update(self._new_id.keys())
882
trans_ids.update(self._removed_contents)
883
trans_ids.update(self._new_contents.keys())
884
trans_ids.update(self._new_executability.keys())
885
trans_ids.update(self._new_name.keys())
886
trans_ids.update(self._new_parent.keys())
889
def _get_file_id_maps(self):
890
"""Return mapping of file_ids to trans_ids in the to and from states"""
891
trans_ids = self._affected_ids()
894
# Build up two dicts: trans_ids associated with file ids in the
895
# FROM state, vs the TO state.
896
for trans_id in trans_ids:
897
from_file_id = self.tree_file_id(trans_id)
898
if from_file_id is not None:
899
from_trans_ids[from_file_id] = trans_id
900
to_file_id = self.final_file_id(trans_id)
901
if to_file_id is not None:
902
to_trans_ids[to_file_id] = trans_id
903
return from_trans_ids, to_trans_ids
905
def _from_file_data(self, from_trans_id, from_versioned, file_id):
906
"""Get data about a file in the from (tree) state
908
Return a (name, parent, kind, executable) tuple
910
from_path = self._tree_id_paths.get(from_trans_id)
912
# get data from working tree if versioned
913
from_entry = self._tree.iter_entries_by_dir([file_id]).next()[1]
914
from_name = from_entry.name
915
from_parent = from_entry.parent_id
918
if from_path is None:
919
# File does not exist in FROM state
923
# File exists, but is not versioned. Have to use path-
925
from_name = os.path.basename(from_path)
926
tree_parent = self.get_tree_parent(from_trans_id)
927
from_parent = self.tree_file_id(tree_parent)
928
if from_path is not None:
929
from_kind, from_executable, from_stats = \
930
self._tree._comparison_data(from_entry, from_path)
933
from_executable = False
934
return from_name, from_parent, from_kind, from_executable
936
def _to_file_data(self, to_trans_id, from_trans_id, from_executable):
937
"""Get data about a file in the to (target) state
939
Return a (name, parent, kind, executable) tuple
941
to_name = self.final_name(to_trans_id)
942
to_kind = self.final_kind(to_trans_id)
943
to_parent = self.final_file_id(self.final_parent(to_trans_id))
944
if to_trans_id in self._new_executability:
945
to_executable = self._new_executability[to_trans_id]
946
elif to_trans_id == from_trans_id:
947
to_executable = from_executable
949
to_executable = False
950
return to_name, to_parent, to_kind, to_executable
952
def iter_changes(self):
953
"""Produce output in the same format as Tree.iter_changes.
955
Will produce nonsensical results if invoked while inventory/filesystem
956
conflicts (as reported by TreeTransform.find_conflicts()) are present.
958
This reads the Transform, but only reproduces changes involving a
959
file_id. Files that are not versioned in either of the FROM or TO
960
states are not reflected.
962
final_paths = FinalPaths(self)
963
from_trans_ids, to_trans_ids = self._get_file_id_maps()
965
# Now iterate through all active file_ids
966
for file_id in set(from_trans_ids.keys() + to_trans_ids.keys()):
968
from_trans_id = from_trans_ids.get(file_id)
969
# find file ids, and determine versioning state
970
if from_trans_id is None:
971
from_versioned = False
972
from_trans_id = to_trans_ids[file_id]
974
from_versioned = True
975
to_trans_id = to_trans_ids.get(file_id)
976
if to_trans_id is None:
978
to_trans_id = from_trans_id
982
from_name, from_parent, from_kind, from_executable = \
983
self._from_file_data(from_trans_id, from_versioned, file_id)
985
to_name, to_parent, to_kind, to_executable = \
986
self._to_file_data(to_trans_id, from_trans_id, from_executable)
988
if not from_versioned:
991
from_path = self._tree_id_paths.get(from_trans_id)
995
to_path = final_paths.get_path(to_trans_id)
996
if from_kind != to_kind:
998
elif to_kind in ('file', 'symlink') and (
999
to_trans_id != from_trans_id or
1000
to_trans_id in self._new_contents):
1002
if (not modified and from_versioned == to_versioned and
1003
from_parent==to_parent and from_name == to_name and
1004
from_executable == to_executable):
1006
results.append((file_id, (from_path, to_path), modified,
1007
(from_versioned, to_versioned),
1008
(from_parent, to_parent),
1009
(from_name, to_name),
1010
(from_kind, to_kind),
1011
(from_executable, to_executable)))
1012
return iter(sorted(results, key=lambda x:x[1]))
1014
def get_preview_tree(self):
1015
"""Return a tree representing the result of the transform.
1017
The tree is a snapshot, and altering the TreeTransform will invalidate
1020
return _PreviewTree(self)
1022
def commit(self, branch, message, merge_parents=None, strict=False,
1023
timestamp=None, timezone=None, committer=None, authors=None,
1024
revprops=None, revision_id=None):
1025
"""Commit the result of this TreeTransform to a branch.
1027
:param branch: The branch to commit to.
1028
:param message: The message to attach to the commit.
1029
:param merge_parents: Additional parent revision-ids specified by
1031
:param strict: If True, abort the commit if there are unversioned
1033
:param timestamp: if not None, seconds-since-epoch for the time and
1034
date. (May be a float.)
1035
:param timezone: Optional timezone for timestamp, as an offset in
1037
:param committer: Optional committer in email-id format.
1038
(e.g. "J Random Hacker <jrandom@example.com>")
1039
:param authors: Optional list of authors in email-id format.
1040
:param revprops: Optional dictionary of revision properties.
1041
:param revision_id: Optional revision id. (Specifying a revision-id
1042
may reduce performance for some non-native formats.)
1043
:return: The revision_id of the revision committed.
1045
self._check_malformed()
1047
unversioned = set(self._new_contents).difference(set(self._new_id))
1048
for trans_id in unversioned:
1049
if self.final_file_id(trans_id) is None:
1050
raise errors.StrictCommitFailed()
1052
revno, last_rev_id = branch.last_revision_info()
1053
if last_rev_id == _mod_revision.NULL_REVISION:
1054
if merge_parents is not None:
1055
raise ValueError('Cannot supply merge parents for first'
1059
parent_ids = [last_rev_id]
1060
if merge_parents is not None:
1061
parent_ids.extend(merge_parents)
1062
if self._tree.get_revision_id() != last_rev_id:
1063
raise ValueError('TreeTransform not based on branch basis: %s' %
1064
self._tree.get_revision_id())
1065
revprops = commit.Commit.update_revprops(revprops, branch, authors)
1066
builder = branch.get_commit_builder(parent_ids,
1067
timestamp=timestamp,
1069
committer=committer,
1071
revision_id=revision_id)
1072
preview = self.get_preview_tree()
1073
list(builder.record_iter_changes(preview, last_rev_id,
1074
self.iter_changes()))
1075
builder.finish_inventory()
1076
revision_id = builder.commit(message)
1077
branch.set_last_revision_info(revno + 1, revision_id)
1080
def _text_parent(self, trans_id):
1081
file_id = self.tree_file_id(trans_id)
1083
if file_id is None or self._tree.kind(file_id) != 'file':
1085
except errors.NoSuchFile:
1089
def _get_parents_texts(self, trans_id):
1090
"""Get texts for compression parents of this file."""
1091
file_id = self._text_parent(trans_id)
1094
return (self._tree.get_file_text(file_id),)
1096
def _get_parents_lines(self, trans_id):
1097
"""Get lines for compression parents of this file."""
1098
file_id = self._text_parent(trans_id)
1101
return (self._tree.get_file_lines(file_id),)
1103
def serialize(self, serializer):
1104
"""Serialize this TreeTransform.
1106
:param serializer: A Serialiser like pack.ContainerSerializer.
1108
new_name = dict((k, v.encode('utf-8')) for k, v in
1109
self._new_name.items())
1110
new_executability = dict((k, int(v)) for k, v in
1111
self._new_executability.items())
1112
tree_path_ids = dict((k.encode('utf-8'), v)
1113
for k, v in self._tree_path_ids.items())
1115
'_id_number': self._id_number,
1116
'_new_name': new_name,
1117
'_new_parent': self._new_parent,
1118
'_new_executability': new_executability,
1119
'_new_id': self._new_id,
1120
'_tree_path_ids': tree_path_ids,
1121
'_removed_id': list(self._removed_id),
1122
'_removed_contents': list(self._removed_contents),
1123
'_non_present_ids': self._non_present_ids,
1125
yield serializer.bytes_record(bencode.bencode(attribs),
1127
for trans_id, kind in self._new_contents.items():
1129
lines = osutils.chunks_to_lines(
1130
self._read_file_chunks(trans_id))
1131
parents = self._get_parents_lines(trans_id)
1132
mpdiff = multiparent.MultiParent.from_lines(lines, parents)
1133
content = ''.join(mpdiff.to_patch())
1134
if kind == 'directory':
1136
if kind == 'symlink':
1137
content = self._read_symlink_target(trans_id)
1138
yield serializer.bytes_record(content, ((trans_id, kind),))
1140
def deserialize(self, records):
1141
"""Deserialize a stored TreeTransform.
1143
:param records: An iterable of (names, content) tuples, as per
1144
pack.ContainerPushParser.
1146
names, content = records.next()
1147
attribs = bencode.bdecode(content)
1148
self._id_number = attribs['_id_number']
1149
self._new_name = dict((k, v.decode('utf-8'))
1150
for k, v in attribs['_new_name'].items())
1151
self._new_parent = attribs['_new_parent']
1152
self._new_executability = dict((k, bool(v)) for k, v in
1153
attribs['_new_executability'].items())
1154
self._new_id = attribs['_new_id']
1155
self._r_new_id = dict((v, k) for k, v in self._new_id.items())
1156
self._tree_path_ids = {}
1157
self._tree_id_paths = {}
1158
for bytepath, trans_id in attribs['_tree_path_ids'].items():
1159
path = bytepath.decode('utf-8')
1160
self._tree_path_ids[path] = trans_id
1161
self._tree_id_paths[trans_id] = path
1162
self._removed_id = set(attribs['_removed_id'])
1163
self._removed_contents = set(attribs['_removed_contents'])
1164
self._non_present_ids = attribs['_non_present_ids']
1165
for ((trans_id, kind),), content in records:
1167
mpdiff = multiparent.MultiParent.from_patch(content)
1168
lines = mpdiff.to_lines(self._get_parents_texts(trans_id))
1169
self.create_file(lines, trans_id)
1170
if kind == 'directory':
1171
self.create_directory(trans_id)
1172
if kind == 'symlink':
1173
self.create_symlink(content.decode('utf-8'), trans_id)
1176
class DiskTreeTransform(TreeTransformBase):
1177
"""Tree transform storing its contents on disk."""
1179
def __init__(self, tree, limbodir, pb=None,
1180
case_sensitive=True):
1182
:param tree: The tree that will be transformed, but not necessarily
1184
:param limbodir: A directory where new files can be stored until
1185
they are installed in their proper places
1187
:param case_sensitive: If True, the target of the transform is
1188
case sensitive, not just case preserving.
1190
TreeTransformBase.__init__(self, tree, pb, case_sensitive)
1191
self._limbodir = limbodir
1192
self._deletiondir = None
1193
# A mapping of transform ids to their limbo filename
1194
self._limbo_files = {}
1195
self._possibly_stale_limbo_files = set()
1196
# A mapping of transform ids to a set of the transform ids of children
1197
# that their limbo directory has
1198
self._limbo_children = {}
1199
# Map transform ids to maps of child filename to child transform id
1200
self._limbo_children_names = {}
1201
# List of transform ids that need to be renamed from limbo into place
1202
self._needs_rename = set()
1203
self._creation_mtime = None
1206
"""Release the working tree lock, if held, clean up limbo dir.
1208
This is required if apply has not been invoked, but can be invoked
1211
if self._tree is None:
1214
limbo_paths = self._limbo_files.values() + list(
1215
self._possibly_stale_limbo_files)
1216
limbo_paths = sorted(limbo_paths, reverse=True)
1217
for path in limbo_paths:
1221
if e.errno != errno.ENOENT:
1223
# XXX: warn? perhaps we just got interrupted at an
1224
# inconvenient moment, but perhaps files are disappearing
1227
delete_any(self._limbodir)
1229
# We don't especially care *why* the dir is immortal.
1230
raise ImmortalLimbo(self._limbodir)
1232
if self._deletiondir is not None:
1233
delete_any(self._deletiondir)
1235
raise errors.ImmortalPendingDeletion(self._deletiondir)
1237
TreeTransformBase.finalize(self)
1239
def _limbo_supports_executable(self):
1240
"""Check if the limbo path supports the executable bit."""
1241
# FIXME: Check actual file system capabilities of limbodir
1242
return osutils.supports_executable()
1244
def _limbo_name(self, trans_id):
1245
"""Generate the limbo name of a file"""
1246
limbo_name = self._limbo_files.get(trans_id)
1247
if limbo_name is None:
1248
limbo_name = self._generate_limbo_path(trans_id)
1249
self._limbo_files[trans_id] = limbo_name
1252
def _generate_limbo_path(self, trans_id):
1253
"""Generate a limbo path using the trans_id as the relative path.
1255
This is suitable as a fallback, and when the transform should not be
1256
sensitive to the path encoding of the limbo directory.
1258
self._needs_rename.add(trans_id)
1259
return pathjoin(self._limbodir, trans_id)
1261
def adjust_path(self, name, parent, trans_id):
1262
previous_parent = self._new_parent.get(trans_id)
1263
previous_name = self._new_name.get(trans_id)
1264
TreeTransformBase.adjust_path(self, name, parent, trans_id)
1265
if (trans_id in self._limbo_files and
1266
trans_id not in self._needs_rename):
1267
self._rename_in_limbo([trans_id])
1268
if previous_parent != parent:
1269
self._limbo_children[previous_parent].remove(trans_id)
1270
if previous_parent != parent or previous_name != name:
1271
del self._limbo_children_names[previous_parent][previous_name]
1273
def _rename_in_limbo(self, trans_ids):
1274
"""Fix limbo names so that the right final path is produced.
1276
This means we outsmarted ourselves-- we tried to avoid renaming
1277
these files later by creating them with their final names in their
1278
final parents. But now the previous name or parent is no longer
1279
suitable, so we have to rename them.
1281
Even for trans_ids that have no new contents, we must remove their
1282
entries from _limbo_files, because they are now stale.
1284
for trans_id in trans_ids:
1285
old_path = self._limbo_files[trans_id]
1286
self._possibly_stale_limbo_files.add(old_path)
1287
del self._limbo_files[trans_id]
1288
if trans_id not in self._new_contents:
1290
new_path = self._limbo_name(trans_id)
1291
os.rename(old_path, new_path)
1292
self._possibly_stale_limbo_files.remove(old_path)
1293
for descendant in self._limbo_descendants(trans_id):
1294
desc_path = self._limbo_files[descendant]
1295
desc_path = new_path + desc_path[len(old_path):]
1296
self._limbo_files[descendant] = desc_path
1298
def _limbo_descendants(self, trans_id):
1299
"""Return the set of trans_ids whose limbo paths descend from this."""
1300
descendants = set(self._limbo_children.get(trans_id, []))
1301
for descendant in list(descendants):
1302
descendants.update(self._limbo_descendants(descendant))
1305
def create_file(self, contents, trans_id, mode_id=None, sha1=None):
1306
"""Schedule creation of a new file.
1310
:param contents: an iterator of strings, all of which will be written
1311
to the target destination.
1312
:param trans_id: TreeTransform handle
1313
:param mode_id: If not None, force the mode of the target file to match
1314
the mode of the object referenced by mode_id.
1315
Otherwise, we will try to preserve mode bits of an existing file.
1316
:param sha1: If the sha1 of this content is already known, pass it in.
1317
We can use it to prevent future sha1 computations.
1319
name = self._limbo_name(trans_id)
1320
f = open(name, 'wb')
1322
unique_add(self._new_contents, trans_id, 'file')
1323
f.writelines(contents)
1326
self._set_mtime(name)
1327
self._set_mode(trans_id, mode_id, S_ISREG)
1328
# It is unfortunate we have to use lstat instead of fstat, but we just
1329
# used utime and chmod on the file, so we need the accurate final
1331
if sha1 is not None:
1332
self._observed_sha1s[trans_id] = (sha1, osutils.lstat(name))
1334
def _read_file_chunks(self, trans_id):
1335
cur_file = open(self._limbo_name(trans_id), 'rb')
1337
return cur_file.readlines()
1341
def _read_symlink_target(self, trans_id):
1342
return os.readlink(self._limbo_name(trans_id))
1344
def _set_mtime(self, path):
1345
"""All files that are created get the same mtime.
1347
This time is set by the first object to be created.
1349
if self._creation_mtime is None:
1350
self._creation_mtime = time.time()
1351
os.utime(path, (self._creation_mtime, self._creation_mtime))
1353
def create_hardlink(self, path, trans_id):
1354
"""Schedule creation of a hard link"""
1355
name = self._limbo_name(trans_id)
1359
if e.errno != errno.EPERM:
1361
raise errors.HardLinkNotSupported(path)
1363
unique_add(self._new_contents, trans_id, 'file')
1365
# Clean up the file, it never got registered so
1366
# TreeTransform.finalize() won't clean it up.
1370
def create_directory(self, trans_id):
1371
"""Schedule creation of a new directory.
1373
See also new_directory.
1375
os.mkdir(self._limbo_name(trans_id))
1376
unique_add(self._new_contents, trans_id, 'directory')
1378
def create_symlink(self, target, trans_id):
1379
"""Schedule creation of a new symbolic link.
1381
target is a bytestring.
1382
See also new_symlink.
1385
os.symlink(target, self._limbo_name(trans_id))
1386
unique_add(self._new_contents, trans_id, 'symlink')
1389
path = FinalPaths(self).get_path(trans_id)
1392
raise UnableCreateSymlink(path=path)
1394
def cancel_creation(self, trans_id):
1395
"""Cancel the creation of new file contents."""
1396
del self._new_contents[trans_id]
1397
if trans_id in self._observed_sha1s:
1398
del self._observed_sha1s[trans_id]
1399
children = self._limbo_children.get(trans_id)
1400
# if this is a limbo directory with children, move them before removing
1402
if children is not None:
1403
self._rename_in_limbo(children)
1404
del self._limbo_children[trans_id]
1405
del self._limbo_children_names[trans_id]
1406
delete_any(self._limbo_name(trans_id))
1408
def new_orphan(self, trans_id, parent_id):
1409
conf = self._tree.get_config_stack()
1410
handle_orphan = conf.get('bzr.transform.orphan_policy')
1411
handle_orphan(self, trans_id, parent_id)
1414
class OrphaningError(errors.BzrError):
1416
# Only bugs could lead to such exception being seen by the user
1417
internal_error = True
1418
_fmt = "Error while orphaning %s in %s directory"
1420
def __init__(self, orphan, parent):
1421
errors.BzrError.__init__(self)
1422
self.orphan = orphan
1423
self.parent = parent
1426
class OrphaningForbidden(OrphaningError):
1428
_fmt = "Policy: %s doesn't allow creating orphans."
1430
def __init__(self, policy):
1431
errors.BzrError.__init__(self)
1432
self.policy = policy
1435
def move_orphan(tt, orphan_id, parent_id):
1436
"""See TreeTransformBase.new_orphan.
1438
This creates a new orphan in the `bzr-orphans` dir at the root of the
1441
:param tt: The TreeTransform orphaning `trans_id`.
1443
:param orphan_id: The trans id that should be orphaned.
1445
:param parent_id: The orphan parent trans id.
1447
# Add the orphan dir if it doesn't exist
1448
orphan_dir_basename = 'bzr-orphans'
1449
od_id = tt.trans_id_tree_path(orphan_dir_basename)
1450
if tt.final_kind(od_id) is None:
1451
tt.create_directory(od_id)
1452
parent_path = tt._tree_id_paths[parent_id]
1453
# Find a name that doesn't exist yet in the orphan dir
1454
actual_name = tt.final_name(orphan_id)
1455
new_name = tt._available_backup_name(actual_name, od_id)
1456
tt.adjust_path(new_name, od_id, orphan_id)
1457
trace.warning('%s has been orphaned in %s'
1458
% (joinpath(parent_path, actual_name), orphan_dir_basename))
1461
def refuse_orphan(tt, orphan_id, parent_id):
1462
"""See TreeTransformBase.new_orphan.
1464
This refuses to create orphan, letting the caller handle the conflict.
1466
raise OrphaningForbidden('never')
1469
orphaning_registry = registry.Registry()
1470
orphaning_registry.register(
1471
'conflict', refuse_orphan,
1472
'Leave orphans in place and create a conflict on the directory.')
1473
orphaning_registry.register(
1474
'move', move_orphan,
1475
'Move orphans into the bzr-orphans directory.')
1476
orphaning_registry._set_default_key('conflict')
1479
opt_transform_orphan = _mod_config.RegistryOption(
1480
'bzr.transform.orphan_policy', orphaning_registry,
1481
help='Policy for orphaned files during transform operations.',
1485
class TreeTransform(DiskTreeTransform):
1486
"""Represent a tree transformation.
1488
This object is designed to support incremental generation of the transform,
1491
However, it gives optimum performance when parent directories are created
1492
before their contents. The transform is then able to put child files
1493
directly in their parent directory, avoiding later renames.
1495
It is easy to produce malformed transforms, but they are generally
1496
harmless. Attempting to apply a malformed transform will cause an
1497
exception to be raised before any modifications are made to the tree.
1499
Many kinds of malformed transforms can be corrected with the
1500
resolve_conflicts function. The remaining ones indicate programming error,
1501
such as trying to create a file with no path.
1503
Two sets of file creation methods are supplied. Convenience methods are:
1508
These are composed of the low-level methods:
1510
* create_file or create_directory or create_symlink
1514
Transform/Transaction ids
1515
-------------------------
1516
trans_ids are temporary ids assigned to all files involved in a transform.
1517
It's possible, even common, that not all files in the Tree have trans_ids.
1519
trans_ids are used because filenames and file_ids are not good enough
1520
identifiers; filenames change, and not all files have file_ids. File-ids
1521
are also associated with trans-ids, so that moving a file moves its
1524
trans_ids are only valid for the TreeTransform that generated them.
1528
Limbo is a temporary directory use to hold new versions of files.
1529
Files are added to limbo by create_file, create_directory, create_symlink,
1530
and their convenience variants (new_*). Files may be removed from limbo
1531
using cancel_creation. Files are renamed from limbo into their final
1532
location as part of TreeTransform.apply
1534
Limbo must be cleaned up, by either calling TreeTransform.apply or
1535
calling TreeTransform.finalize.
1537
Files are placed into limbo inside their parent directories, where
1538
possible. This reduces subsequent renames, and makes operations involving
1539
lots of files faster. This optimization is only possible if the parent
1540
directory is created *before* creating any of its children, so avoid
1541
creating children before parents, where possible.
1545
This temporary directory is used by _FileMover for storing files that are
1546
about to be deleted. In case of rollback, the files will be restored.
1547
FileMover does not delete files until it is sure that a rollback will not
1550
def __init__(self, tree, pb=None):
1551
"""Note: a tree_write lock is taken on the tree.
1553
Use TreeTransform.finalize() to release the lock (can be omitted if
1554
TreeTransform.apply() called).
1556
tree.lock_tree_write()
1559
limbodir = urlutils.local_path_from_url(
1560
tree._transport.abspath('limbo'))
1561
osutils.ensure_empty_directory_exists(
1563
errors.ExistingLimbo)
1564
deletiondir = urlutils.local_path_from_url(
1565
tree._transport.abspath('pending-deletion'))
1566
osutils.ensure_empty_directory_exists(
1568
errors.ExistingPendingDeletion)
1573
# Cache of realpath results, to speed up canonical_path
1574
self._realpaths = {}
1575
# Cache of relpath results, to speed up canonical_path
1577
DiskTreeTransform.__init__(self, tree, limbodir, pb,
1578
tree.case_sensitive)
1579
self._deletiondir = deletiondir
1581
def canonical_path(self, path):
1582
"""Get the canonical tree-relative path"""
1583
# don't follow final symlinks
1584
abs = self._tree.abspath(path)
1585
if abs in self._relpaths:
1586
return self._relpaths[abs]
1587
dirname, basename = os.path.split(abs)
1588
if dirname not in self._realpaths:
1589
self._realpaths[dirname] = os.path.realpath(dirname)
1590
dirname = self._realpaths[dirname]
1591
abs = pathjoin(dirname, basename)
1592
if dirname in self._relpaths:
1593
relpath = pathjoin(self._relpaths[dirname], basename)
1594
relpath = relpath.rstrip('/\\')
1596
relpath = self._tree.relpath(abs)
1597
self._relpaths[abs] = relpath
1600
def tree_kind(self, trans_id):
1601
"""Determine the file kind in the working tree.
1603
:returns: The file kind or None if the file does not exist
1605
path = self._tree_id_paths.get(trans_id)
1609
return file_kind(self._tree.abspath(path))
1610
except errors.NoSuchFile:
1613
def _set_mode(self, trans_id, mode_id, typefunc):
1614
"""Set the mode of new file contents.
1615
The mode_id is the existing file to get the mode from (often the same
1616
as trans_id). The operation is only performed if there's a mode match
1617
according to typefunc.
1622
old_path = self._tree_id_paths[mode_id]
1626
mode = os.stat(self._tree.abspath(old_path)).st_mode
1628
if e.errno in (errno.ENOENT, errno.ENOTDIR):
1629
# Either old_path doesn't exist, or the parent of the
1630
# target is not a directory (but will be one eventually)
1631
# Either way, we know it doesn't exist *right now*
1632
# See also bug #248448
1637
osutils.chmod_if_possible(self._limbo_name(trans_id), mode)
1639
def iter_tree_children(self, parent_id):
1640
"""Iterate through the entry's tree children, if any"""
1642
path = self._tree_id_paths[parent_id]
1646
children = os.listdir(self._tree.abspath(path))
1648
if not (osutils._is_error_enotdir(e)
1649
or e.errno in (errno.ENOENT, errno.ESRCH)):
1653
for child in children:
1654
childpath = joinpath(path, child)
1655
if self._tree.is_control_filename(childpath):
1657
yield self.trans_id_tree_path(childpath)
1659
def _generate_limbo_path(self, trans_id):
1660
"""Generate a limbo path using the final path if possible.
1662
This optimizes the performance of applying the tree transform by
1663
avoiding renames. These renames can be avoided only when the parent
1664
directory is already scheduled for creation.
1666
If the final path cannot be used, falls back to using the trans_id as
1669
parent = self._new_parent.get(trans_id)
1670
# if the parent directory is already in limbo (e.g. when building a
1671
# tree), choose a limbo name inside the parent, to reduce further
1673
use_direct_path = False
1674
if self._new_contents.get(parent) == 'directory':
1675
filename = self._new_name.get(trans_id)
1676
if filename is not None:
1677
if parent not in self._limbo_children:
1678
self._limbo_children[parent] = set()
1679
self._limbo_children_names[parent] = {}
1680
use_direct_path = True
1681
# the direct path can only be used if no other file has
1682
# already taken this pathname, i.e. if the name is unused, or
1683
# if it is already associated with this trans_id.
1684
elif self._case_sensitive_target:
1685
if (self._limbo_children_names[parent].get(filename)
1686
in (trans_id, None)):
1687
use_direct_path = True
1689
for l_filename, l_trans_id in\
1690
self._limbo_children_names[parent].iteritems():
1691
if l_trans_id == trans_id:
1693
if l_filename.lower() == filename.lower():
1696
use_direct_path = True
1698
if not use_direct_path:
1699
return DiskTreeTransform._generate_limbo_path(self, trans_id)
1701
limbo_name = pathjoin(self._limbo_files[parent], filename)
1702
self._limbo_children[parent].add(trans_id)
1703
self._limbo_children_names[parent][filename] = trans_id
1707
def apply(self, no_conflicts=False, precomputed_delta=None, _mover=None):
1708
"""Apply all changes to the inventory and filesystem.
1710
If filesystem or inventory conflicts are present, MalformedTransform
1713
If apply succeeds, finalize is not necessary.
1715
:param no_conflicts: if True, the caller guarantees there are no
1716
conflicts, so no check is made.
1717
:param precomputed_delta: An inventory delta to use instead of
1719
:param _mover: Supply an alternate FileMover, for testing
1721
for hook in MutableTree.hooks['pre_transform']:
1722
hook(self._tree, self)
1723
if not no_conflicts:
1724
self._check_malformed()
1725
child_pb = ui.ui_factory.nested_progress_bar()
1727
if precomputed_delta is None:
1728
child_pb.update(gettext('Apply phase'), 0, 2)
1729
inventory_delta = self._generate_inventory_delta()
1732
inventory_delta = precomputed_delta
1735
mover = _FileMover()
1739
child_pb.update(gettext('Apply phase'), 0 + offset, 2 + offset)
1740
self._apply_removals(mover)
1741
child_pb.update(gettext('Apply phase'), 1 + offset, 2 + offset)
1742
modified_paths = self._apply_insertions(mover)
1747
mover.apply_deletions()
1750
if self.final_file_id(self.root) is None:
1751
inventory_delta = [e for e in inventory_delta if e[0] != '']
1752
self._tree.apply_inventory_delta(inventory_delta)
1753
self._apply_observed_sha1s()
1756
return _TransformResults(modified_paths, self.rename_count)
1758
def _generate_inventory_delta(self):
1759
"""Generate an inventory delta for the current transform."""
1760
inventory_delta = []
1761
child_pb = ui.ui_factory.nested_progress_bar()
1762
new_paths = self._inventory_altered()
1763
total_entries = len(new_paths) + len(self._removed_id)
1765
for num, trans_id in enumerate(self._removed_id):
1767
child_pb.update(gettext('removing file'), num, total_entries)
1768
if trans_id == self._new_root:
1769
file_id = self._tree.get_root_id()
1771
file_id = self.tree_file_id(trans_id)
1772
# File-id isn't really being deleted, just moved
1773
if file_id in self._r_new_id:
1775
path = self._tree_id_paths[trans_id]
1776
inventory_delta.append((path, None, file_id, None))
1777
new_path_file_ids = dict((t, self.final_file_id(t)) for p, t in
1779
entries = self._tree.iter_entries_by_dir(
1780
new_path_file_ids.values())
1781
old_paths = dict((e.file_id, p) for p, e in entries)
1783
for num, (path, trans_id) in enumerate(new_paths):
1785
child_pb.update(gettext('adding file'),
1786
num + len(self._removed_id), total_entries)
1787
file_id = new_path_file_ids[trans_id]
1791
kind = self.final_kind(trans_id)
1793
kind = self._tree.stored_kind(file_id)
1794
parent_trans_id = self.final_parent(trans_id)
1795
parent_file_id = new_path_file_ids.get(parent_trans_id)
1796
if parent_file_id is None:
1797
parent_file_id = self.final_file_id(parent_trans_id)
1798
if trans_id in self._new_reference_revision:
1799
new_entry = inventory.TreeReference(
1801
self._new_name[trans_id],
1802
self.final_file_id(self._new_parent[trans_id]),
1803
None, self._new_reference_revision[trans_id])
1805
new_entry = inventory.make_entry(kind,
1806
self.final_name(trans_id),
1807
parent_file_id, file_id)
1808
old_path = old_paths.get(new_entry.file_id)
1809
new_executability = self._new_executability.get(trans_id)
1810
if new_executability is not None:
1811
new_entry.executable = new_executability
1812
inventory_delta.append(
1813
(old_path, path, new_entry.file_id, new_entry))
1816
return inventory_delta
1818
def _apply_removals(self, mover):
1819
"""Perform tree operations that remove directory/inventory names.
1821
That is, delete files that are to be deleted, and put any files that
1822
need renaming into limbo. This must be done in strict child-to-parent
1825
If inventory_delta is None, no inventory delta generation is performed.
1827
tree_paths = list(self._tree_path_ids.iteritems())
1828
tree_paths.sort(reverse=True)
1829
child_pb = ui.ui_factory.nested_progress_bar()
1831
for num, (path, trans_id) in enumerate(tree_paths):
1832
# do not attempt to move root into a subdirectory of itself.
1835
child_pb.update(gettext('removing file'), num, len(tree_paths))
1836
full_path = self._tree.abspath(path)
1837
if trans_id in self._removed_contents:
1838
delete_path = os.path.join(self._deletiondir, trans_id)
1839
mover.pre_delete(full_path, delete_path)
1840
elif (trans_id in self._new_name
1841
or trans_id in self._new_parent):
1843
mover.rename(full_path, self._limbo_name(trans_id))
1844
except errors.TransformRenameFailed, e:
1845
if e.errno != errno.ENOENT:
1848
self.rename_count += 1
1852
def _apply_insertions(self, mover):
1853
"""Perform tree operations that insert directory/inventory names.
1855
That is, create any files that need to be created, and restore from
1856
limbo any files that needed renaming. This must be done in strict
1857
parent-to-child order.
1859
If inventory_delta is None, no inventory delta is calculated, and
1860
no list of modified paths is returned.
1862
new_paths = self.new_paths(filesystem_only=True)
1864
new_path_file_ids = dict((t, self.final_file_id(t)) for p, t in
1866
child_pb = ui.ui_factory.nested_progress_bar()
1868
for num, (path, trans_id) in enumerate(new_paths):
1870
child_pb.update(gettext('adding file'), num, len(new_paths))
1871
full_path = self._tree.abspath(path)
1872
if trans_id in self._needs_rename:
1874
mover.rename(self._limbo_name(trans_id), full_path)
1875
except errors.TransformRenameFailed, e:
1876
# We may be renaming a dangling inventory id
1877
if e.errno != errno.ENOENT:
1880
self.rename_count += 1
1881
# TODO: if trans_id in self._observed_sha1s, we should
1882
# re-stat the final target, since ctime will be
1883
# updated by the change.
1884
if (trans_id in self._new_contents or
1885
self.path_changed(trans_id)):
1886
if trans_id in self._new_contents:
1887
modified_paths.append(full_path)
1888
if trans_id in self._new_executability:
1889
self._set_executability(path, trans_id)
1890
if trans_id in self._observed_sha1s:
1891
o_sha1, o_st_val = self._observed_sha1s[trans_id]
1892
st = osutils.lstat(full_path)
1893
self._observed_sha1s[trans_id] = (o_sha1, st)
1896
for path, trans_id in new_paths:
1897
# new_paths includes stuff like workingtree conflicts. Only the
1898
# stuff in new_contents actually comes from limbo.
1899
if trans_id in self._limbo_files:
1900
del self._limbo_files[trans_id]
1901
self._new_contents.clear()
1902
return modified_paths
1904
def _apply_observed_sha1s(self):
1905
"""After we have finished renaming everything, update observed sha1s
1907
This has to be done after self._tree.apply_inventory_delta, otherwise
1908
it doesn't know anything about the files we are updating. Also, we want
1909
to do this as late as possible, so that most entries end up cached.
1911
# TODO: this doesn't update the stat information for directories. So
1912
# the first 'bzr status' will still need to rewrite
1913
# .bzr/checkout/dirstate. However, we at least don't need to
1914
# re-read all of the files.
1915
# TODO: If the operation took a while, we could do a time.sleep(3) here
1916
# to allow the clock to tick over and ensure we won't have any
1917
# problems. (we could observe start time, and finish time, and if
1918
# it is less than eg 10% overhead, add a sleep call.)
1919
paths = FinalPaths(self)
1920
for trans_id, observed in self._observed_sha1s.iteritems():
1921
path = paths.get_path(trans_id)
1922
# We could get the file_id, but dirstate prefers to use the path
1923
# anyway, and it is 'cheaper' to determine.
1924
# file_id = self._new_id[trans_id]
1925
self._tree._observed_sha1(None, path, observed)
1928
class TransformPreview(DiskTreeTransform):
1929
"""A TreeTransform for generating preview trees.
1931
Unlike TreeTransform, this version works when the input tree is a
1932
RevisionTree, rather than a WorkingTree. As a result, it tends to ignore
1933
unversioned files in the input tree.
1936
def __init__(self, tree, pb=None, case_sensitive=True):
1938
limbodir = osutils.mkdtemp(prefix='bzr-limbo-')
1939
DiskTreeTransform.__init__(self, tree, limbodir, pb, case_sensitive)
1941
def canonical_path(self, path):
1944
def tree_kind(self, trans_id):
1945
path = self._tree_id_paths.get(trans_id)
1948
kind = self._tree.path_content_summary(path)[0]
1949
if kind == 'missing':
1953
def _set_mode(self, trans_id, mode_id, typefunc):
1954
"""Set the mode of new file contents.
1955
The mode_id is the existing file to get the mode from (often the same
1956
as trans_id). The operation is only performed if there's a mode match
1957
according to typefunc.
1959
# is it ok to ignore this? probably
1962
def iter_tree_children(self, parent_id):
1963
"""Iterate through the entry's tree children, if any"""
1965
path = self._tree_id_paths[parent_id]
1968
file_id = self.tree_file_id(parent_id)
1971
entry = self._tree.iter_entries_by_dir([file_id]).next()[1]
1972
children = getattr(entry, 'children', {})
1973
for child in children:
1974
childpath = joinpath(path, child)
1975
yield self.trans_id_tree_path(childpath)
1977
def new_orphan(self, trans_id, parent_id):
1978
raise NotImplementedError(self.new_orphan)
1981
class _PreviewTree(tree.InventoryTree):
1982
"""Partial implementation of Tree to support show_diff_trees"""
1984
def __init__(self, transform):
1985
self._transform = transform
1986
self._final_paths = FinalPaths(transform)
1987
self.__by_parent = None
1988
self._parent_ids = []
1989
self._all_children_cache = {}
1990
self._path2trans_id_cache = {}
1991
self._final_name_cache = {}
1992
self._iter_changes_cache = dict((c[0], c) for c in
1993
self._transform.iter_changes())
1995
def _content_change(self, file_id):
1996
"""Return True if the content of this file changed"""
1997
changes = self._iter_changes_cache.get(file_id)
1998
# changes[2] is true if the file content changed. See
1999
# InterTree.iter_changes.
2000
return (changes is not None and changes[2])
2002
def _get_repository(self):
2003
repo = getattr(self._transform._tree, '_repository', None)
2005
repo = self._transform._tree.branch.repository
2008
def _iter_parent_trees(self):
2009
for revision_id in self.get_parent_ids():
2011
yield self.revision_tree(revision_id)
2012
except errors.NoSuchRevisionInTree:
2013
yield self._get_repository().revision_tree(revision_id)
2015
def _get_file_revision(self, file_id, vf, tree_revision):
2016
parent_keys = [(file_id, t.get_file_revision(file_id)) for t in
2017
self._iter_parent_trees()]
2018
vf.add_lines((file_id, tree_revision), parent_keys,
2019
self.get_file_lines(file_id))
2020
repo = self._get_repository()
2021
base_vf = repo.texts
2022
if base_vf not in vf.fallback_versionedfiles:
2023
vf.fallback_versionedfiles.append(base_vf)
2024
return tree_revision
2026
def _stat_limbo_file(self, file_id=None, trans_id=None):
2027
if trans_id is None:
2028
trans_id = self._transform.trans_id_file_id(file_id)
2029
name = self._transform._limbo_name(trans_id)
2030
return os.lstat(name)
2033
def _by_parent(self):
2034
if self.__by_parent is None:
2035
self.__by_parent = self._transform.by_parent()
2036
return self.__by_parent
2038
def _comparison_data(self, entry, path):
2039
kind, size, executable, link_or_sha1 = self.path_content_summary(path)
2040
if kind == 'missing':
2044
file_id = self._transform.final_file_id(self._path2trans_id(path))
2045
executable = self.is_executable(file_id, path)
2046
return kind, executable, None
2048
def is_locked(self):
2051
def lock_read(self):
2052
# Perhaps in theory, this should lock the TreeTransform?
2059
def inventory(self):
2060
"""This Tree does not use inventory as its backing data."""
2061
raise NotImplementedError(_PreviewTree.inventory)
2063
def get_root_id(self):
2064
return self._transform.final_file_id(self._transform.root)
2066
def all_file_ids(self):
2067
tree_ids = set(self._transform._tree.all_file_ids())
2068
tree_ids.difference_update(self._transform.tree_file_id(t)
2069
for t in self._transform._removed_id)
2070
tree_ids.update(self._transform._new_id.values())
2074
return iter(self.all_file_ids())
2076
def _has_id(self, file_id, fallback_check):
2077
if file_id in self._transform._r_new_id:
2079
elif file_id in set([self._transform.tree_file_id(trans_id) for
2080
trans_id in self._transform._removed_id]):
2083
return fallback_check(file_id)
2085
def has_id(self, file_id):
2086
return self._has_id(file_id, self._transform._tree.has_id)
2088
def has_or_had_id(self, file_id):
2089
return self._has_id(file_id, self._transform._tree.has_or_had_id)
2091
def _path2trans_id(self, path):
2092
# We must not use None here, because that is a valid value to store.
2093
trans_id = self._path2trans_id_cache.get(path, object)
2094
if trans_id is not object:
2096
segments = splitpath(path)
2097
cur_parent = self._transform.root
2098
for cur_segment in segments:
2099
for child in self._all_children(cur_parent):
2100
final_name = self._final_name_cache.get(child)
2101
if final_name is None:
2102
final_name = self._transform.final_name(child)
2103
self._final_name_cache[child] = final_name
2104
if final_name == cur_segment:
2108
self._path2trans_id_cache[path] = None
2110
self._path2trans_id_cache[path] = cur_parent
2113
def path2id(self, path):
2114
return self._transform.final_file_id(self._path2trans_id(path))
2116
def id2path(self, file_id):
2117
trans_id = self._transform.trans_id_file_id(file_id)
2119
return self._final_paths._determine_path(trans_id)
2121
raise errors.NoSuchId(self, file_id)
2123
def _all_children(self, trans_id):
2124
children = self._all_children_cache.get(trans_id)
2125
if children is not None:
2127
children = set(self._transform.iter_tree_children(trans_id))
2128
# children in the _new_parent set are provided by _by_parent.
2129
children.difference_update(self._transform._new_parent.keys())
2130
children.update(self._by_parent.get(trans_id, []))
2131
self._all_children_cache[trans_id] = children
2134
def iter_children(self, file_id):
2135
trans_id = self._transform.trans_id_file_id(file_id)
2136
for child_trans_id in self._all_children(trans_id):
2137
yield self._transform.final_file_id(child_trans_id)
2140
possible_extras = set(self._transform.trans_id_tree_path(p) for p
2141
in self._transform._tree.extras())
2142
possible_extras.update(self._transform._new_contents)
2143
possible_extras.update(self._transform._removed_id)
2144
for trans_id in possible_extras:
2145
if self._transform.final_file_id(trans_id) is None:
2146
yield self._final_paths._determine_path(trans_id)
2148
def _make_inv_entries(self, ordered_entries, specific_file_ids=None,
2149
yield_parents=False):
2150
for trans_id, parent_file_id in ordered_entries:
2151
file_id = self._transform.final_file_id(trans_id)
2154
if (specific_file_ids is not None
2155
and file_id not in specific_file_ids):
2157
kind = self._transform.final_kind(trans_id)
2159
kind = self._transform._tree.stored_kind(file_id)
2160
new_entry = inventory.make_entry(
2162
self._transform.final_name(trans_id),
2163
parent_file_id, file_id)
2164
yield new_entry, trans_id
2166
def _list_files_by_dir(self):
2167
todo = [ROOT_PARENT]
2169
while len(todo) > 0:
2171
parent_file_id = self._transform.final_file_id(parent)
2172
children = list(self._all_children(parent))
2173
paths = dict(zip(children, self._final_paths.get_paths(children)))
2174
children.sort(key=paths.get)
2175
todo.extend(reversed(children))
2176
for trans_id in children:
2177
ordered_ids.append((trans_id, parent_file_id))
2180
def iter_entries_by_dir(self, specific_file_ids=None, yield_parents=False):
2181
# This may not be a maximally efficient implementation, but it is
2182
# reasonably straightforward. An implementation that grafts the
2183
# TreeTransform changes onto the tree's iter_entries_by_dir results
2184
# might be more efficient, but requires tricky inferences about stack
2186
ordered_ids = self._list_files_by_dir()
2187
for entry, trans_id in self._make_inv_entries(ordered_ids,
2188
specific_file_ids, yield_parents=yield_parents):
2189
yield unicode(self._final_paths.get_path(trans_id)), entry
2191
def _iter_entries_for_dir(self, dir_path):
2192
"""Return path, entry for items in a directory without recursing down."""
2193
dir_file_id = self.path2id(dir_path)
2195
for file_id in self.iter_children(dir_file_id):
2196
trans_id = self._transform.trans_id_file_id(file_id)
2197
ordered_ids.append((trans_id, file_id))
2198
for entry, trans_id in self._make_inv_entries(ordered_ids):
2199
yield unicode(self._final_paths.get_path(trans_id)), entry
2201
def list_files(self, include_root=False, from_dir=None, recursive=True):
2202
"""See WorkingTree.list_files."""
2203
# XXX This should behave like WorkingTree.list_files, but is really
2204
# more like RevisionTree.list_files.
2208
prefix = from_dir + '/'
2209
entries = self.iter_entries_by_dir()
2210
for path, entry in entries:
2211
if entry.name == '' and not include_root:
2214
if not path.startswith(prefix):
2216
path = path[len(prefix):]
2217
yield path, 'V', entry.kind, entry.file_id, entry
2219
if from_dir is None and include_root is True:
2220
root_entry = inventory.make_entry('directory', '',
2221
ROOT_PARENT, self.get_root_id())
2222
yield '', 'V', 'directory', root_entry.file_id, root_entry
2223
entries = self._iter_entries_for_dir(from_dir or '')
2224
for path, entry in entries:
2225
yield path, 'V', entry.kind, entry.file_id, entry
2227
def kind(self, file_id):
2228
trans_id = self._transform.trans_id_file_id(file_id)
2229
return self._transform.final_kind(trans_id)
2231
def stored_kind(self, file_id):
2232
trans_id = self._transform.trans_id_file_id(file_id)
2234
return self._transform._new_contents[trans_id]
2236
return self._transform._tree.stored_kind(file_id)
2238
def get_file_mtime(self, file_id, path=None):
2239
"""See Tree.get_file_mtime"""
2240
if not self._content_change(file_id):
2241
return self._transform._tree.get_file_mtime(file_id)
2242
return self._stat_limbo_file(file_id).st_mtime
2244
def _file_size(self, entry, stat_value):
2245
return self.get_file_size(entry.file_id)
2247
def get_file_size(self, file_id):
2248
"""See Tree.get_file_size"""
2249
trans_id = self._transform.trans_id_file_id(file_id)
2250
kind = self._transform.final_kind(trans_id)
2253
if trans_id in self._transform._new_contents:
2254
return self._stat_limbo_file(trans_id=trans_id).st_size
2255
if self.kind(file_id) == 'file':
2256
return self._transform._tree.get_file_size(file_id)
2260
def get_file_verifier(self, file_id, path=None, stat_value=None):
2261
trans_id = self._transform.trans_id_file_id(file_id)
2262
kind = self._transform._new_contents.get(trans_id)
2264
return self._transform._tree.get_file_verifier(file_id)
2266
fileobj = self.get_file(file_id)
2268
return ("SHA1", sha_file(fileobj))
2272
def get_file_sha1(self, file_id, path=None, stat_value=None):
2273
trans_id = self._transform.trans_id_file_id(file_id)
2274
kind = self._transform._new_contents.get(trans_id)
2276
return self._transform._tree.get_file_sha1(file_id)
2278
fileobj = self.get_file(file_id)
2280
return sha_file(fileobj)
2284
def is_executable(self, file_id, path=None):
2287
trans_id = self._transform.trans_id_file_id(file_id)
2289
return self._transform._new_executability[trans_id]
2292
return self._transform._tree.is_executable(file_id, path)
2294
if e.errno == errno.ENOENT:
2297
except errors.NoSuchId:
2300
def has_filename(self, path):
2301
trans_id = self._path2trans_id(path)
2302
if trans_id in self._transform._new_contents:
2304
elif trans_id in self._transform._removed_contents:
2307
return self._transform._tree.has_filename(path)
2309
def path_content_summary(self, path):
2310
trans_id = self._path2trans_id(path)
2311
tt = self._transform
2312
tree_path = tt._tree_id_paths.get(trans_id)
2313
kind = tt._new_contents.get(trans_id)
2315
if tree_path is None or trans_id in tt._removed_contents:
2316
return 'missing', None, None, None
2317
summary = tt._tree.path_content_summary(tree_path)
2318
kind, size, executable, link_or_sha1 = summary
2321
limbo_name = tt._limbo_name(trans_id)
2322
if trans_id in tt._new_reference_revision:
2323
kind = 'tree-reference'
2325
statval = os.lstat(limbo_name)
2326
size = statval.st_size
2327
if not tt._limbo_supports_executable():
2330
executable = statval.st_mode & S_IEXEC
2334
if kind == 'symlink':
2335
link_or_sha1 = os.readlink(limbo_name).decode(osutils._fs_enc)
2336
executable = tt._new_executability.get(trans_id, executable)
2337
return kind, size, executable, link_or_sha1
2339
def iter_changes(self, from_tree, include_unchanged=False,
2340
specific_files=None, pb=None, extra_trees=None,
2341
require_versioned=True, want_unversioned=False):
2342
"""See InterTree.iter_changes.
2344
This has a fast path that is only used when the from_tree matches
2345
the transform tree, and no fancy options are supplied.
2347
if (from_tree is not self._transform._tree or include_unchanged or
2348
specific_files or want_unversioned):
2349
return tree.InterTree(from_tree, self).iter_changes(
2350
include_unchanged=include_unchanged,
2351
specific_files=specific_files,
2353
extra_trees=extra_trees,
2354
require_versioned=require_versioned,
2355
want_unversioned=want_unversioned)
2356
if want_unversioned:
2357
raise ValueError('want_unversioned is not supported')
2358
return self._transform.iter_changes()
2360
def get_file(self, file_id, path=None):
2361
"""See Tree.get_file"""
2362
if not self._content_change(file_id):
2363
return self._transform._tree.get_file(file_id, path)
2364
trans_id = self._transform.trans_id_file_id(file_id)
2365
name = self._transform._limbo_name(trans_id)
2366
return open(name, 'rb')
2368
def get_file_with_stat(self, file_id, path=None):
2369
return self.get_file(file_id, path), None
2371
def annotate_iter(self, file_id,
2372
default_revision=_mod_revision.CURRENT_REVISION):
2373
changes = self._iter_changes_cache.get(file_id)
2377
changed_content, versioned, kind = (changes[2], changes[3],
2381
get_old = (kind[0] == 'file' and versioned[0])
2383
old_annotation = self._transform._tree.annotate_iter(file_id,
2384
default_revision=default_revision)
2388
return old_annotation
2389
if not changed_content:
2390
return old_annotation
2391
# TODO: This is doing something similar to what WT.annotate_iter is
2392
# doing, however it fails slightly because it doesn't know what
2393
# the *other* revision_id is, so it doesn't know how to give the
2394
# other as the origin for some lines, they all get
2395
# 'default_revision'
2396
# It would be nice to be able to use the new Annotator based
2397
# approach, as well.
2398
return annotate.reannotate([old_annotation],
2399
self.get_file(file_id).readlines(),
2402
def get_symlink_target(self, file_id, path=None):
2403
"""See Tree.get_symlink_target"""
2404
if not self._content_change(file_id):
2405
return self._transform._tree.get_symlink_target(file_id)
2406
trans_id = self._transform.trans_id_file_id(file_id)
2407
name = self._transform._limbo_name(trans_id)
2408
return osutils.readlink(name)
2410
def walkdirs(self, prefix=''):
2411
pending = [self._transform.root]
2412
while len(pending) > 0:
2413
parent_id = pending.pop()
2416
prefix = prefix.rstrip('/')
2417
parent_path = self._final_paths.get_path(parent_id)
2418
parent_file_id = self._transform.final_file_id(parent_id)
2419
for child_id in self._all_children(parent_id):
2420
path_from_root = self._final_paths.get_path(child_id)
2421
basename = self._transform.final_name(child_id)
2422
file_id = self._transform.final_file_id(child_id)
2423
kind = self._transform.final_kind(child_id)
2424
if kind is not None:
2425
versioned_kind = kind
2428
versioned_kind = self._transform._tree.stored_kind(file_id)
2429
if versioned_kind == 'directory':
2430
subdirs.append(child_id)
2431
children.append((path_from_root, basename, kind, None,
2432
file_id, versioned_kind))
2434
if parent_path.startswith(prefix):
2435
yield (parent_path, parent_file_id), children
2436
pending.extend(sorted(subdirs, key=self._final_paths.get_path,
2439
def get_parent_ids(self):
2440
return self._parent_ids
2442
def set_parent_ids(self, parent_ids):
2443
self._parent_ids = parent_ids
2445
def get_revision_tree(self, revision_id):
2446
return self._transform._tree.get_revision_tree(revision_id)
2449
def joinpath(parent, child):
2450
"""Join tree-relative paths, handling the tree root specially"""
2451
if parent is None or parent == "":
2454
return pathjoin(parent, child)
2457
class FinalPaths(object):
2458
"""Make path calculation cheap by memoizing paths.
2460
The underlying tree must not be manipulated between calls, or else
2461
the results will likely be incorrect.
2463
def __init__(self, transform):
2464
object.__init__(self)
2465
self._known_paths = {}
2466
self.transform = transform
2468
def _determine_path(self, trans_id):
2469
if (trans_id == self.transform.root or trans_id == ROOT_PARENT):
2471
name = self.transform.final_name(trans_id)
2472
parent_id = self.transform.final_parent(trans_id)
2473
if parent_id == self.transform.root:
2476
return pathjoin(self.get_path(parent_id), name)
2478
def get_path(self, trans_id):
2479
"""Find the final path associated with a trans_id"""
2480
if trans_id not in self._known_paths:
2481
self._known_paths[trans_id] = self._determine_path(trans_id)
2482
return self._known_paths[trans_id]
2484
def get_paths(self, trans_ids):
2485
return [(self.get_path(t), t) for t in trans_ids]
2489
def topology_sorted_ids(tree):
2490
"""Determine the topological order of the ids in a tree"""
2491
file_ids = list(tree)
2492
file_ids.sort(key=tree.id2path)
2496
def build_tree(tree, wt, accelerator_tree=None, hardlink=False,
2497
delta_from_tree=False):
2498
"""Create working tree for a branch, using a TreeTransform.
2500
This function should be used on empty trees, having a tree root at most.
2501
(see merge and revert functionality for working with existing trees)
2503
Existing files are handled like so:
2505
- Existing bzrdirs take precedence over creating new items. They are
2506
created as '%s.diverted' % name.
2507
- Otherwise, if the content on disk matches the content we are building,
2508
it is silently replaced.
2509
- Otherwise, conflict resolution will move the old file to 'oldname.moved'.
2511
:param tree: The tree to convert wt into a copy of
2512
:param wt: The working tree that files will be placed into
2513
:param accelerator_tree: A tree which can be used for retrieving file
2514
contents more quickly than tree itself, i.e. a workingtree. tree
2515
will be used for cases where accelerator_tree's content is different.
2516
:param hardlink: If true, hard-link files to accelerator_tree, where
2517
possible. accelerator_tree must implement abspath, i.e. be a
2519
:param delta_from_tree: If true, build_tree may use the input Tree to
2520
generate the inventory delta.
2522
wt.lock_tree_write()
2526
if accelerator_tree is not None:
2527
accelerator_tree.lock_read()
2529
return _build_tree(tree, wt, accelerator_tree, hardlink,
2532
if accelerator_tree is not None:
2533
accelerator_tree.unlock()
2540
def _build_tree(tree, wt, accelerator_tree, hardlink, delta_from_tree):
2541
"""See build_tree."""
2542
for num, _unused in enumerate(wt.all_file_ids()):
2543
if num > 0: # more than just a root
2544
raise errors.WorkingTreeAlreadyPopulated(base=wt.basedir)
2546
top_pb = ui.ui_factory.nested_progress_bar()
2547
pp = ProgressPhase("Build phase", 2, top_pb)
2548
if tree.get_root_id() is not None:
2549
# This is kind of a hack: we should be altering the root
2550
# as part of the regular tree shape diff logic.
2551
# The conditional test here is to avoid doing an
2552
# expensive operation (flush) every time the root id
2553
# is set within the tree, nor setting the root and thus
2554
# marking the tree as dirty, because we use two different
2555
# idioms here: tree interfaces and inventory interfaces.
2556
if wt.get_root_id() != tree.get_root_id():
2557
wt.set_root_id(tree.get_root_id())
2559
tt = TreeTransform(wt)
2563
file_trans_id[wt.get_root_id()] = \
2564
tt.trans_id_tree_file_id(wt.get_root_id())
2565
pb = ui.ui_factory.nested_progress_bar()
2567
deferred_contents = []
2569
total = len(tree.all_file_ids())
2571
precomputed_delta = []
2573
precomputed_delta = None
2574
# Check if tree inventory has content. If so, we populate
2575
# existing_files with the directory content. If there are no
2576
# entries we skip populating existing_files as its not used.
2577
# This improves performance and unncessary work on large
2578
# directory trees. (#501307)
2580
existing_files = set()
2581
for dir, files in wt.walkdirs():
2582
existing_files.update(f[0] for f in files)
2583
for num, (tree_path, entry) in \
2584
enumerate(tree.iter_entries_by_dir()):
2585
pb.update(gettext("Building tree"), num - len(deferred_contents), total)
2586
if entry.parent_id is None:
2589
file_id = entry.file_id
2591
precomputed_delta.append((None, tree_path, file_id, entry))
2592
if tree_path in existing_files:
2593
target_path = wt.abspath(tree_path)
2594
kind = file_kind(target_path)
2595
if kind == "directory":
2597
controldir.ControlDir.open(target_path)
2598
except errors.NotBranchError:
2602
if (file_id not in divert and
2603
_content_match(tree, entry, file_id, kind,
2605
tt.delete_contents(tt.trans_id_tree_path(tree_path))
2606
if kind == 'directory':
2608
parent_id = file_trans_id[entry.parent_id]
2609
if entry.kind == 'file':
2610
# We *almost* replicate new_by_entry, so that we can defer
2611
# getting the file text, and get them all at once.
2612
trans_id = tt.create_path(entry.name, parent_id)
2613
file_trans_id[file_id] = trans_id
2614
tt.version_file(file_id, trans_id)
2615
executable = tree.is_executable(file_id, tree_path)
2617
tt.set_executability(executable, trans_id)
2618
trans_data = (trans_id, tree_path, entry.text_sha1)
2619
deferred_contents.append((file_id, trans_data))
2621
file_trans_id[file_id] = new_by_entry(tt, entry, parent_id,
2624
new_trans_id = file_trans_id[file_id]
2625
old_parent = tt.trans_id_tree_path(tree_path)
2626
_reparent_children(tt, old_parent, new_trans_id)
2627
offset = num + 1 - len(deferred_contents)
2628
_create_files(tt, tree, deferred_contents, pb, offset,
2629
accelerator_tree, hardlink)
2633
divert_trans = set(file_trans_id[f] for f in divert)
2634
resolver = lambda t, c: resolve_checkout(t, c, divert_trans)
2635
raw_conflicts = resolve_conflicts(tt, pass_func=resolver)
2636
if len(raw_conflicts) > 0:
2637
precomputed_delta = None
2638
conflicts = cook_conflicts(raw_conflicts, tt)
2639
for conflict in conflicts:
2640
trace.warning(unicode(conflict))
2642
wt.add_conflicts(conflicts)
2643
except errors.UnsupportedOperation:
2645
result = tt.apply(no_conflicts=True,
2646
precomputed_delta=precomputed_delta)
2653
def _create_files(tt, tree, desired_files, pb, offset, accelerator_tree,
2655
total = len(desired_files) + offset
2657
if accelerator_tree is None:
2658
new_desired_files = desired_files
2660
iter = accelerator_tree.iter_changes(tree, include_unchanged=True)
2661
unchanged = [(f, p[1]) for (f, p, c, v, d, n, k, e)
2662
in iter if not (c or e[0] != e[1])]
2663
if accelerator_tree.supports_content_filtering():
2664
unchanged = [(f, p) for (f, p) in unchanged
2665
if not accelerator_tree.iter_search_rules([p]).next()]
2666
unchanged = dict(unchanged)
2667
new_desired_files = []
2669
for file_id, (trans_id, tree_path, text_sha1) in desired_files:
2670
accelerator_path = unchanged.get(file_id)
2671
if accelerator_path is None:
2672
new_desired_files.append((file_id,
2673
(trans_id, tree_path, text_sha1)))
2675
pb.update(gettext('Adding file contents'), count + offset, total)
2677
tt.create_hardlink(accelerator_tree.abspath(accelerator_path),
2680
contents = accelerator_tree.get_file(file_id, accelerator_path)
2681
if wt.supports_content_filtering():
2682
filters = wt._content_filter_stack(tree_path)
2683
contents = filtered_output_bytes(contents, filters,
2684
ContentFilterContext(tree_path, tree))
2686
tt.create_file(contents, trans_id, sha1=text_sha1)
2690
except AttributeError:
2691
# after filtering, contents may no longer be file-like
2695
for count, ((trans_id, tree_path, text_sha1), contents) in enumerate(
2696
tree.iter_files_bytes(new_desired_files)):
2697
if wt.supports_content_filtering():
2698
filters = wt._content_filter_stack(tree_path)
2699
contents = filtered_output_bytes(contents, filters,
2700
ContentFilterContext(tree_path, tree))
2701
tt.create_file(contents, trans_id, sha1=text_sha1)
2702
pb.update(gettext('Adding file contents'), count + offset, total)
2705
def _reparent_children(tt, old_parent, new_parent):
2706
for child in tt.iter_tree_children(old_parent):
2707
tt.adjust_path(tt.final_name(child), new_parent, child)
2710
def _reparent_transform_children(tt, old_parent, new_parent):
2711
by_parent = tt.by_parent()
2712
for child in by_parent[old_parent]:
2713
tt.adjust_path(tt.final_name(child), new_parent, child)
2714
return by_parent[old_parent]
2717
def _content_match(tree, entry, file_id, kind, target_path):
2718
if entry.kind != kind:
2720
if entry.kind == "directory":
2722
if entry.kind == "file":
2723
f = file(target_path, 'rb')
2725
if tree.get_file_text(file_id) == f.read():
2729
elif entry.kind == "symlink":
2730
if tree.get_symlink_target(file_id) == os.readlink(target_path):
2735
def resolve_checkout(tt, conflicts, divert):
2736
new_conflicts = set()
2737
for c_type, conflict in ((c[0], c) for c in conflicts):
2738
# Anything but a 'duplicate' would indicate programmer error
2739
if c_type != 'duplicate':
2740
raise AssertionError(c_type)
2741
# Now figure out which is new and which is old
2742
if tt.new_contents(conflict[1]):
2743
new_file = conflict[1]
2744
old_file = conflict[2]
2746
new_file = conflict[2]
2747
old_file = conflict[1]
2749
# We should only get here if the conflict wasn't completely
2751
final_parent = tt.final_parent(old_file)
2752
if new_file in divert:
2753
new_name = tt.final_name(old_file)+'.diverted'
2754
tt.adjust_path(new_name, final_parent, new_file)
2755
new_conflicts.add((c_type, 'Diverted to',
2756
new_file, old_file))
2758
new_name = tt.final_name(old_file)+'.moved'
2759
tt.adjust_path(new_name, final_parent, old_file)
2760
new_conflicts.add((c_type, 'Moved existing file to',
2761
old_file, new_file))
2762
return new_conflicts
2765
def new_by_entry(tt, entry, parent_id, tree):
2766
"""Create a new file according to its inventory entry"""
2770
contents = tree.get_file(entry.file_id).readlines()
2771
executable = tree.is_executable(entry.file_id)
2772
return tt.new_file(name, parent_id, contents, entry.file_id,
2774
elif kind in ('directory', 'tree-reference'):
2775
trans_id = tt.new_directory(name, parent_id, entry.file_id)
2776
if kind == 'tree-reference':
2777
tt.set_tree_reference(entry.reference_revision, trans_id)
2779
elif kind == 'symlink':
2780
target = tree.get_symlink_target(entry.file_id)
2781
return tt.new_symlink(name, parent_id, target, entry.file_id)
2783
raise errors.BadFileKindError(name, kind)
2786
def create_from_tree(tt, trans_id, tree, file_id, bytes=None,
2787
filter_tree_path=None):
2788
"""Create new file contents according to tree contents.
2790
:param filter_tree_path: the tree path to use to lookup
2791
content filters to apply to the bytes output in the working tree.
2792
This only applies if the working tree supports content filtering.
2794
kind = tree.kind(file_id)
2795
if kind == 'directory':
2796
tt.create_directory(trans_id)
2797
elif kind == "file":
2799
tree_file = tree.get_file(file_id)
2801
bytes = tree_file.readlines()
2805
if wt.supports_content_filtering() and filter_tree_path is not None:
2806
filters = wt._content_filter_stack(filter_tree_path)
2807
bytes = filtered_output_bytes(bytes, filters,
2808
ContentFilterContext(filter_tree_path, tree))
2809
tt.create_file(bytes, trans_id)
2810
elif kind == "symlink":
2811
tt.create_symlink(tree.get_symlink_target(file_id), trans_id)
2813
raise AssertionError('Unknown kind %r' % kind)
2816
def create_entry_executability(tt, entry, trans_id):
2817
"""Set the executability of a trans_id according to an inventory entry"""
2818
if entry.kind == "file":
2819
tt.set_executability(entry.executable, trans_id)
2822
@deprecated_function(deprecated_in((2, 3, 0)))
2823
def get_backup_name(entry, by_parent, parent_trans_id, tt):
2824
return _get_backup_name(entry.name, by_parent, parent_trans_id, tt)
2827
@deprecated_function(deprecated_in((2, 3, 0)))
2828
def _get_backup_name(name, by_parent, parent_trans_id, tt):
2829
"""Produce a backup-style name that appears to be available"""
2833
yield "%s.~%d~" % (name, counter)
2835
for new_name in name_gen():
2836
if not tt.has_named_child(by_parent, parent_trans_id, new_name):
2840
def revert(working_tree, target_tree, filenames, backups=False,
2841
pb=None, change_reporter=None):
2842
"""Revert a working tree's contents to those of a target tree."""
2843
target_tree.lock_read()
2844
pb = ui.ui_factory.nested_progress_bar()
2845
tt = TreeTransform(working_tree, pb)
2847
pp = ProgressPhase("Revert phase", 3, pb)
2848
conflicts, merge_modified = _prepare_revert_transform(
2849
working_tree, target_tree, tt, filenames, backups, pp)
2851
change_reporter = delta._ChangeReporter(
2852
unversioned_filter=working_tree.is_ignored)
2853
delta.report_changes(tt.iter_changes(), change_reporter)
2854
for conflict in conflicts:
2855
trace.warning(unicode(conflict))
2858
working_tree.set_merge_modified(merge_modified)
2860
target_tree.unlock()
2866
def _prepare_revert_transform(working_tree, target_tree, tt, filenames,
2867
backups, pp, basis_tree=None,
2868
merge_modified=None):
2869
child_pb = ui.ui_factory.nested_progress_bar()
2871
if merge_modified is None:
2872
merge_modified = working_tree.merge_modified()
2873
merge_modified = _alter_files(working_tree, target_tree, tt,
2874
child_pb, filenames, backups,
2875
merge_modified, basis_tree)
2878
child_pb = ui.ui_factory.nested_progress_bar()
2880
raw_conflicts = resolve_conflicts(tt, child_pb,
2881
lambda t, c: conflict_pass(t, c, target_tree))
2884
conflicts = cook_conflicts(raw_conflicts, tt)
2885
return conflicts, merge_modified
2888
def _alter_files(working_tree, target_tree, tt, pb, specific_files,
2889
backups, merge_modified, basis_tree=None):
2890
if basis_tree is not None:
2891
basis_tree.lock_read()
2892
# We ask the working_tree for its changes relative to the target, rather
2893
# than the target changes relative to the working tree. Because WT4 has an
2894
# optimizer to compare itself to a target, but no optimizer for the
2896
change_list = working_tree.iter_changes(target_tree,
2897
specific_files=specific_files, pb=pb)
2898
if target_tree.get_root_id() is None:
2904
for id_num, (file_id, path, changed_content, versioned, parent, name,
2905
kind, executable) in enumerate(change_list):
2906
target_path, wt_path = path
2907
target_versioned, wt_versioned = versioned
2908
target_parent, wt_parent = parent
2909
target_name, wt_name = name
2910
target_kind, wt_kind = kind
2911
target_executable, wt_executable = executable
2912
if skip_root and wt_parent is None:
2914
trans_id = tt.trans_id_file_id(file_id)
2917
keep_content = False
2918
if wt_kind == 'file' and (backups or target_kind is None):
2919
wt_sha1 = working_tree.get_file_sha1(file_id)
2920
if merge_modified.get(file_id) != wt_sha1:
2921
# acquire the basis tree lazily to prevent the
2922
# expense of accessing it when it's not needed ?
2923
# (Guessing, RBC, 200702)
2924
if basis_tree is None:
2925
basis_tree = working_tree.basis_tree()
2926
basis_tree.lock_read()
2927
if basis_tree.has_id(file_id):
2928
if wt_sha1 != basis_tree.get_file_sha1(file_id):
2930
elif target_kind is None and not target_versioned:
2932
if wt_kind is not None:
2933
if not keep_content:
2934
tt.delete_contents(trans_id)
2935
elif target_kind is not None:
2936
parent_trans_id = tt.trans_id_file_id(wt_parent)
2937
backup_name = tt._available_backup_name(
2938
wt_name, parent_trans_id)
2939
tt.adjust_path(backup_name, parent_trans_id, trans_id)
2940
new_trans_id = tt.create_path(wt_name, parent_trans_id)
2941
if wt_versioned and target_versioned:
2942
tt.unversion_file(trans_id)
2943
tt.version_file(file_id, new_trans_id)
2944
# New contents should have the same unix perms as old
2947
trans_id = new_trans_id
2948
if target_kind in ('directory', 'tree-reference'):
2949
tt.create_directory(trans_id)
2950
if target_kind == 'tree-reference':
2951
revision = target_tree.get_reference_revision(file_id,
2953
tt.set_tree_reference(revision, trans_id)
2954
elif target_kind == 'symlink':
2955
tt.create_symlink(target_tree.get_symlink_target(file_id),
2957
elif target_kind == 'file':
2958
deferred_files.append((file_id, (trans_id, mode_id)))
2959
if basis_tree is None:
2960
basis_tree = working_tree.basis_tree()
2961
basis_tree.lock_read()
2962
new_sha1 = target_tree.get_file_sha1(file_id)
2963
if (basis_tree.has_id(file_id) and
2964
new_sha1 == basis_tree.get_file_sha1(file_id)):
2965
if file_id in merge_modified:
2966
del merge_modified[file_id]
2968
merge_modified[file_id] = new_sha1
2970
# preserve the execute bit when backing up
2971
if keep_content and wt_executable == target_executable:
2972
tt.set_executability(target_executable, trans_id)
2973
elif target_kind is not None:
2974
raise AssertionError(target_kind)
2975
if not wt_versioned and target_versioned:
2976
tt.version_file(file_id, trans_id)
2977
if wt_versioned and not target_versioned:
2978
tt.unversion_file(trans_id)
2979
if (target_name is not None and
2980
(wt_name != target_name or wt_parent != target_parent)):
2981
if target_name == '' and target_parent is None:
2982
parent_trans = ROOT_PARENT
2984
parent_trans = tt.trans_id_file_id(target_parent)
2985
if wt_parent is None and wt_versioned:
2986
tt.adjust_root_path(target_name, parent_trans)
2988
tt.adjust_path(target_name, parent_trans, trans_id)
2989
if wt_executable != target_executable and target_kind == "file":
2990
tt.set_executability(target_executable, trans_id)
2991
if working_tree.supports_content_filtering():
2992
for index, ((trans_id, mode_id), bytes) in enumerate(
2993
target_tree.iter_files_bytes(deferred_files)):
2994
file_id = deferred_files[index][0]
2995
# We're reverting a tree to the target tree so using the
2996
# target tree to find the file path seems the best choice
2997
# here IMO - Ian C 27/Oct/2009
2998
filter_tree_path = target_tree.id2path(file_id)
2999
filters = working_tree._content_filter_stack(filter_tree_path)
3000
bytes = filtered_output_bytes(bytes, filters,
3001
ContentFilterContext(filter_tree_path, working_tree))
3002
tt.create_file(bytes, trans_id, mode_id)
3004
for (trans_id, mode_id), bytes in target_tree.iter_files_bytes(
3006
tt.create_file(bytes, trans_id, mode_id)
3007
tt.fixup_new_roots()
3009
if basis_tree is not None:
3011
return merge_modified
3014
def resolve_conflicts(tt, pb=None, pass_func=None):
3015
"""Make many conflict-resolution attempts, but die if they fail"""
3016
if pass_func is None:
3017
pass_func = conflict_pass
3018
new_conflicts = set()
3019
pb = ui.ui_factory.nested_progress_bar()
3022
pb.update(gettext('Resolution pass'), n+1, 10)
3023
conflicts = tt.find_conflicts()
3024
if len(conflicts) == 0:
3025
return new_conflicts
3026
new_conflicts.update(pass_func(tt, conflicts))
3027
raise MalformedTransform(conflicts=conflicts)
3032
def conflict_pass(tt, conflicts, path_tree=None):
3033
"""Resolve some classes of conflicts.
3035
:param tt: The transform to resolve conflicts in
3036
:param conflicts: The conflicts to resolve
3037
:param path_tree: A Tree to get supplemental paths from
3039
new_conflicts = set()
3040
for c_type, conflict in ((c[0], c) for c in conflicts):
3041
if c_type == 'duplicate id':
3042
tt.unversion_file(conflict[1])
3043
new_conflicts.add((c_type, 'Unversioned existing file',
3044
conflict[1], conflict[2], ))
3045
elif c_type == 'duplicate':
3046
# files that were renamed take precedence
3047
final_parent = tt.final_parent(conflict[1])
3048
if tt.path_changed(conflict[1]):
3049
existing_file, new_file = conflict[2], conflict[1]
3051
existing_file, new_file = conflict[1], conflict[2]
3052
new_name = tt.final_name(existing_file) + '.moved'
3053
tt.adjust_path(new_name, final_parent, existing_file)
3054
new_conflicts.add((c_type, 'Moved existing file to',
3055
existing_file, new_file))
3056
elif c_type == 'parent loop':
3057
# break the loop by undoing one of the ops that caused the loop
3059
while not tt.path_changed(cur):
3060
cur = tt.final_parent(cur)
3061
new_conflicts.add((c_type, 'Cancelled move', cur,
3062
tt.final_parent(cur),))
3063
tt.adjust_path(tt.final_name(cur), tt.get_tree_parent(cur), cur)
3065
elif c_type == 'missing parent':
3066
trans_id = conflict[1]
3067
if trans_id in tt._removed_contents:
3068
cancel_deletion = True
3069
orphans = tt._get_potential_orphans(trans_id)
3071
cancel_deletion = False
3072
# All children are orphans
3075
tt.new_orphan(o, trans_id)
3076
except OrphaningError:
3077
# Something bad happened so we cancel the directory
3078
# deletion which will leave it in place with a
3079
# conflict. The user can deal with it from there.
3080
# Note that this also catch the case where we don't
3081
# want to create orphans and leave the directory in
3083
cancel_deletion = True
3086
# Cancel the directory deletion
3087
tt.cancel_deletion(trans_id)
3088
new_conflicts.add(('deleting parent', 'Not deleting',
3093
tt.final_name(trans_id)
3095
if path_tree is not None:
3096
file_id = tt.final_file_id(trans_id)
3098
file_id = tt.inactive_file_id(trans_id)
3099
_, entry = path_tree.iter_entries_by_dir(
3101
# special-case the other tree root (move its
3102
# children to current root)
3103
if entry.parent_id is None:
3105
moved = _reparent_transform_children(
3106
tt, trans_id, tt.root)
3108
new_conflicts.add((c_type, 'Moved to root',
3111
parent_trans_id = tt.trans_id_file_id(
3113
tt.adjust_path(entry.name, parent_trans_id,
3116
tt.create_directory(trans_id)
3117
new_conflicts.add((c_type, 'Created directory', trans_id))
3118
elif c_type == 'unversioned parent':
3119
file_id = tt.inactive_file_id(conflict[1])
3120
# special-case the other tree root (move its children instead)
3121
if path_tree and path_tree.has_id(file_id):
3122
if path_tree.path2id('') == file_id:
3123
# This is the root entry, skip it
3125
tt.version_file(file_id, conflict[1])
3126
new_conflicts.add((c_type, 'Versioned directory', conflict[1]))
3127
elif c_type == 'non-directory parent':
3128
parent_id = conflict[1]
3129
parent_parent = tt.final_parent(parent_id)
3130
parent_name = tt.final_name(parent_id)
3131
parent_file_id = tt.final_file_id(parent_id)
3132
new_parent_id = tt.new_directory(parent_name + '.new',
3133
parent_parent, parent_file_id)
3134
_reparent_transform_children(tt, parent_id, new_parent_id)
3135
if parent_file_id is not None:
3136
tt.unversion_file(parent_id)
3137
new_conflicts.add((c_type, 'Created directory', new_parent_id))
3138
elif c_type == 'versioning no contents':
3139
tt.cancel_versioning(conflict[1])
3140
return new_conflicts
3143
def cook_conflicts(raw_conflicts, tt):
3144
"""Generate a list of cooked conflicts, sorted by file path"""
3145
conflict_iter = iter_cook_conflicts(raw_conflicts, tt)
3146
return sorted(conflict_iter, key=conflicts.Conflict.sort_key)
3149
def iter_cook_conflicts(raw_conflicts, tt):
3151
for conflict in raw_conflicts:
3152
c_type = conflict[0]
3153
action = conflict[1]
3154
modified_path = fp.get_path(conflict[2])
3155
modified_id = tt.final_file_id(conflict[2])
3156
if len(conflict) == 3:
3157
yield conflicts.Conflict.factory(
3158
c_type, action=action, path=modified_path, file_id=modified_id)
3161
conflicting_path = fp.get_path(conflict[3])
3162
conflicting_id = tt.final_file_id(conflict[3])
3163
yield conflicts.Conflict.factory(
3164
c_type, action=action, path=modified_path,
3165
file_id=modified_id,
3166
conflict_path=conflicting_path,
3167
conflict_file_id=conflicting_id)
3170
class _FileMover(object):
3171
"""Moves and deletes files for TreeTransform, tracking operations"""
3174
self.past_renames = []
3175
self.pending_deletions = []
3177
def rename(self, from_, to):
3178
"""Rename a file from one path to another."""
3180
os.rename(from_, to)
3182
if e.errno in (errno.EEXIST, errno.ENOTEMPTY):
3183
raise errors.FileExists(to, str(e))
3184
# normal OSError doesn't include filenames so it's hard to see where
3185
# the problem is, see https://bugs.launchpad.net/bzr/+bug/491763
3186
raise errors.TransformRenameFailed(from_, to, str(e), e.errno)
3187
self.past_renames.append((from_, to))
3189
def pre_delete(self, from_, to):
3190
"""Rename a file out of the way and mark it for deletion.
3192
Unlike os.unlink, this works equally well for files and directories.
3193
:param from_: The current file path
3194
:param to: A temporary path for the file
3196
self.rename(from_, to)
3197
self.pending_deletions.append(to)
3200
"""Reverse all renames that have been performed"""
3201
for from_, to in reversed(self.past_renames):
3203
os.rename(to, from_)
3205
raise errors.TransformRenameFailed(to, from_, str(e), e.errno)
3206
# after rollback, don't reuse _FileMover
3208
pending_deletions = None
3210
def apply_deletions(self):
3211
"""Apply all marked deletions"""
3212
for path in self.pending_deletions:
3214
# after apply_deletions, don't reuse _FileMover
3216
pending_deletions = None
added
removed
bzrlib/transform.py
