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# Copyright (C) 2006, 2007, 2008 Canonical Ltd
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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from stat import S_ISREG, S_IEXEC
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from bzrlib.lazy_import import lazy_import
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lazy_import(globals(), """
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revision as _mod_revision,
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from bzrlib.errors import (DuplicateKey, MalformedTransform, NoSuchFile,
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ReusingTransform, NotVersionedError, CantMoveRoot,
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ExistingLimbo, ImmortalLimbo, NoFinalPath,
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from bzrlib.inventory import InventoryEntry
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from bzrlib.osutils import (
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from bzrlib.progress import DummyProgress, ProgressPhase
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from bzrlib.symbol_versioning import (
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from bzrlib.trace import mutter, warning
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from bzrlib import tree
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import bzrlib.urlutils as urlutils
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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 TreeTransformBase"""
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def __init__(self, tree, limbodir, pb=DummyProgress(),
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:param tree: The tree that will be transformed, but not necessarily
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:param limbodir: A directory where new files can be stored until
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they are installed in their proper places
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:param pb: A ProgressBar indicating how much progress is being made
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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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self._limbodir = limbodir
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self._deletiondir = None
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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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# mapping of trans_id with new contents -> new file_kind
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self._new_contents = {}
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# A mapping of transform ids to their limbo filename
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self._limbo_files = {}
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# A mapping of transform ids to a set of the transform ids of children
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# that their limbo directory has
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self._limbo_children = {}
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# Map transform ids to maps of child filename to child transform id
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self._limbo_children_names = {}
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# List of transform ids that need to be renamed from limbo into place
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self._needs_rename = set()
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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 file_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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# Cache of realpath results, to speed up canonical_path
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# Cache of relpath results, to speed up canonical_path
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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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# Indictor 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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def __get_root(self):
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return self._new_root
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root = property(__get_root)
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"""Release the working tree lock, if held, clean up limbo dir.
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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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entries = [(self._limbo_name(t), t, k) for t, k in
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self._new_contents.iteritems()]
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entries.sort(reverse=True)
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for path, trans_id, kind in entries:
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if kind == "directory":
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os.rmdir(self._limbodir)
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# We don't especially care *why* the dir is immortal.
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raise ImmortalLimbo(self._limbodir)
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if self._deletiondir is not None:
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os.rmdir(self._deletiondir)
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raise errors.ImmortalPendingDeletion(self._deletiondir)
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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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if trans_id == self._new_root:
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previous_parent = self._new_parent.get(trans_id)
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previous_name = self._new_name.get(trans_id)
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self._new_name[trans_id] = name
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self._new_parent[trans_id] = parent
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if parent == ROOT_PARENT:
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if self._new_root is not None:
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raise ValueError("Cannot have multiple roots.")
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self._new_root = trans_id
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if (trans_id in self._limbo_files and
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trans_id not in self._needs_rename):
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self._rename_in_limbo([trans_id])
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self._limbo_children[previous_parent].remove(trans_id)
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del self._limbo_children_names[previous_parent][previous_name]
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def _rename_in_limbo(self, trans_ids):
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"""Fix limbo names so that the right final path is produced.
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This means we outsmarted ourselves-- we tried to avoid renaming
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these files later by creating them with their final names in their
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final parents. But now the previous name or parent is no longer
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suitable, so we have to rename them.
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Even for trans_ids that have no new contents, we must remove their
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entries from _limbo_files, because they are now stale.
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for trans_id in trans_ids:
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old_path = self._limbo_files.pop(trans_id)
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if trans_id not in self._new_contents:
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new_path = self._limbo_name(trans_id)
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os.rename(old_path, new_path)
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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 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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elif file_id in self._tree.inventory:
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return self.trans_id_tree_file_id(file_id)
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elif 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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def canonical_path(self, path):
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"""Get the canonical tree-relative path"""
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# don't follow final symlinks
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abs = self._tree.abspath(path)
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if abs in self._relpaths:
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return self._relpaths[abs]
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dirname, basename = os.path.split(abs)
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if dirname not in self._realpaths:
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self._realpaths[dirname] = os.path.realpath(dirname)
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dirname = self._realpaths[dirname]
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abs = pathjoin(dirname, basename)
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if dirname in self._relpaths:
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relpath = pathjoin(self._relpaths[dirname], basename)
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relpath = relpath.rstrip('/\\')
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relpath = self._tree.relpath(abs)
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self._relpaths[abs] = relpath
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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 create_file(self, contents, trans_id, mode_id=None):
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"""Schedule creation of a new file.
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Contents is an iterator of strings, all of which will be written
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to the target destination.
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New file takes the permissions of any existing file with that id,
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unless mode_id is specified.
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name = self._limbo_name(trans_id)
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unique_add(self._new_contents, trans_id, 'file')
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# Clean up the file, it never got registered so
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# TreeTransform.finalize() won't clean it up.
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f.writelines(contents)
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self._set_mode(trans_id, mode_id, S_ISREG)
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def _set_mode(self, trans_id, mode_id, typefunc):
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"""Set the mode of new file contents.
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The mode_id is the existing file to get the mode from (often the same
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as trans_id). The operation is only performed if there's a mode match
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according to typefunc.
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old_path = self._tree_id_paths[mode_id]
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mode = os.stat(self._tree.abspath(old_path)).st_mode
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if e.errno in (errno.ENOENT, errno.ENOTDIR):
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# Either old_path doesn't exist, or the parent of the
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# target is not a directory (but will be one eventually)
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# Either way, we know it doesn't exist *right now*
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# See also bug #248448
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os.chmod(self._limbo_name(trans_id), mode)
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def create_hardlink(self, path, trans_id):
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"""Schedule creation of a hard link"""
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name = self._limbo_name(trans_id)
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if e.errno != errno.EPERM:
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raise errors.HardLinkNotSupported(path)
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unique_add(self._new_contents, trans_id, 'file')
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# Clean up the file, it never got registered so
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# TreeTransform.finalize() won't clean it up.
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def create_directory(self, trans_id):
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"""Schedule creation of a new directory.
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See also new_directory.
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os.mkdir(self._limbo_name(trans_id))
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unique_add(self._new_contents, trans_id, 'directory')
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def create_symlink(self, target, trans_id):
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"""Schedule creation of a new symbolic link.
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target is a bytestring.
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See also new_symlink.
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os.symlink(target, self._limbo_name(trans_id))
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unique_add(self._new_contents, trans_id, 'symlink')
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path = FinalPaths(self).get_path(trans_id)
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raise UnableCreateSymlink(path=path)
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def cancel_creation(self, trans_id):
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"""Cancel the creation of new file contents."""
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del self._new_contents[trans_id]
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children = self._limbo_children.get(trans_id)
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# if this is a limbo directory with children, move them before removing
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if children is not None:
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self._rename_in_limbo(children)
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del self._limbo_children[trans_id]
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del self._limbo_children_names[trans_id]
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delete_any(self._limbo_name(trans_id))
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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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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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"""Get the trans_ids and paths of files needing new inv entries."""
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for id_set in [self._new_name, self._new_parent, self._new_id,
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self._new_executability]:
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new_ids.update(id_set)
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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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changed_kind.difference_update(new_ids)
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changed_kind = (t for t in changed_kind if self.tree_kind(t) !=
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new_ids.update(changed_kind)
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return sorted(FinalPaths(self).get_paths(new_ids))
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def tree_kind(self, trans_id):
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"""Determine the file kind in the working tree.
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Raises NoSuchFile if the file does not exist
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path = self._tree_id_paths.get(trans_id)
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raise NoSuchFile(None)
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return file_kind(self._tree.abspath(path))
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if e.errno != errno.ENOENT:
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raise NoSuchFile(path)
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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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Raises NoSuchFile if the file does not exist/has no contents.
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(It is conceivable that a path would be created without the
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corresponding 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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raise NoSuchFile(None)
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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.inventory.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 _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.inventory[file_id].kind == '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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def iter_tree_children(self, parent_id):
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"""Iterate through the entry's tree children, if any"""
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path = self._tree_id_paths[parent_id]
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children = os.listdir(self._tree.abspath(path))
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if not (osutils._is_error_enotdir(e)
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or e.errno in (errno.ENOENT, errno.ESRCH)):
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for child in children:
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childpath = joinpath(path, child)
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if self._tree.is_control_filename(childpath):
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yield self.trans_id_tree_path(childpath)
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def has_named_child(self, by_parent, parent_id, name):
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children = by_parent[parent_id]
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for child in children:
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if self.final_name(child) == name:
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path = self._tree_id_paths[parent_id]
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childpath = joinpath(path, name)
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child_id = self._tree_path_ids.get(childpath)
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return lexists(self._tree.abspath(childpath))
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if self.final_parent(child_id) != parent_id:
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if child_id in self._removed_contents:
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# XXX What about dangling file-ids?
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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 is not 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 is 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 InventoryEntry.versionable_kind(kind):
752
conflicts.append(('versioning bad kind', trans_id, kind))
755
def _executability_conflicts(self):
756
"""Check for bad executability changes.
758
Only versioned files may have their executability set, because
759
1. only versioned entries can have executability under windows
760
2. only files can be executable. (The execute bit on a directory
761
does not indicate searchability)
764
for trans_id in self._new_executability:
765
if self.final_file_id(trans_id) is None:
766
conflicts.append(('unversioned executability', trans_id))
769
non_file = self.final_kind(trans_id) != "file"
773
conflicts.append(('non-file executability', trans_id))
776
def _overwrite_conflicts(self):
777
"""Check for overwrites (not permitted on Win32)"""
779
for trans_id in self._new_contents:
781
self.tree_kind(trans_id)
784
if trans_id not in self._removed_contents:
785
conflicts.append(('overwrite', trans_id,
786
self.final_name(trans_id)))
789
def _duplicate_entries(self, by_parent):
790
"""No directory may have two entries with the same name."""
792
if (self._new_name, self._new_parent) == ({}, {}):
794
for children in by_parent.itervalues():
795
name_ids = [(self.final_name(t), t) for t in children]
796
if not self._case_sensitive_target:
797
name_ids = [(n.lower(), t) for n, t in name_ids]
801
for name, trans_id in name_ids:
803
kind = self.final_kind(trans_id)
806
file_id = self.final_file_id(trans_id)
807
if kind is None and file_id is None:
809
if name == last_name:
810
conflicts.append(('duplicate', last_trans_id, trans_id,
813
last_trans_id = trans_id
816
def _duplicate_ids(self):
817
"""Each inventory id may only be used once"""
819
removed_tree_ids = set((self.tree_file_id(trans_id) for trans_id in
821
all_ids = self._tree.all_file_ids()
822
active_tree_ids = all_ids.difference(removed_tree_ids)
823
for trans_id, file_id in self._new_id.iteritems():
824
if file_id in active_tree_ids:
825
old_trans_id = self.trans_id_tree_file_id(file_id)
826
conflicts.append(('duplicate id', old_trans_id, trans_id))
829
def _parent_type_conflicts(self, by_parent):
830
"""parents must have directory 'contents'."""
832
for parent_id, children in by_parent.iteritems():
833
if parent_id is ROOT_PARENT:
835
if not self._any_contents(children):
837
for child in children:
839
self.final_kind(child)
843
kind = self.final_kind(parent_id)
847
conflicts.append(('missing parent', parent_id))
848
elif kind != "directory":
849
conflicts.append(('non-directory parent', parent_id))
852
def _any_contents(self, trans_ids):
853
"""Return true if any of the trans_ids, will have contents."""
854
for trans_id in trans_ids:
856
kind = self.final_kind(trans_id)
862
def _limbo_name(self, trans_id):
863
"""Generate the limbo name of a file"""
864
limbo_name = self._limbo_files.get(trans_id)
865
if limbo_name is not None:
867
parent = self._new_parent.get(trans_id)
868
# if the parent directory is already in limbo (e.g. when building a
869
# tree), choose a limbo name inside the parent, to reduce further
871
use_direct_path = False
872
if self._new_contents.get(parent) == 'directory':
873
filename = self._new_name.get(trans_id)
874
if filename is not None:
875
if parent not in self._limbo_children:
876
self._limbo_children[parent] = set()
877
self._limbo_children_names[parent] = {}
878
use_direct_path = True
879
# the direct path can only be used if no other file has
880
# already taken this pathname, i.e. if the name is unused, or
881
# if it is already associated with this trans_id.
882
elif self._case_sensitive_target:
883
if (self._limbo_children_names[parent].get(filename)
884
in (trans_id, None)):
885
use_direct_path = True
887
for l_filename, l_trans_id in\
888
self._limbo_children_names[parent].iteritems():
889
if l_trans_id == trans_id:
891
if l_filename.lower() == filename.lower():
894
use_direct_path = True
897
limbo_name = pathjoin(self._limbo_files[parent], filename)
898
self._limbo_children[parent].add(trans_id)
899
self._limbo_children_names[parent][filename] = trans_id
901
limbo_name = pathjoin(self._limbodir, trans_id)
902
self._needs_rename.add(trans_id)
903
self._limbo_files[trans_id] = limbo_name
906
def _set_executability(self, path, trans_id):
907
"""Set the executability of versioned files """
908
if supports_executable():
909
new_executability = self._new_executability[trans_id]
910
abspath = self._tree.abspath(path)
911
current_mode = os.stat(abspath).st_mode
912
if new_executability:
915
to_mode = current_mode | (0100 & ~umask)
916
# Enable x-bit for others only if they can read it.
917
if current_mode & 0004:
918
to_mode |= 0001 & ~umask
919
if current_mode & 0040:
920
to_mode |= 0010 & ~umask
922
to_mode = current_mode & ~0111
923
os.chmod(abspath, to_mode)
925
def _new_entry(self, name, parent_id, file_id):
926
"""Helper function to create a new filesystem entry."""
927
trans_id = self.create_path(name, parent_id)
928
if file_id is not None:
929
self.version_file(file_id, trans_id)
932
def new_file(self, name, parent_id, contents, file_id=None,
934
"""Convenience method to create files.
936
name is the name of the file to create.
937
parent_id is the transaction id of the parent directory of the file.
938
contents is an iterator of bytestrings, which will be used to produce
940
:param file_id: The inventory ID of the file, if it is to be versioned.
941
:param executable: Only valid when a file_id has been supplied.
943
trans_id = self._new_entry(name, parent_id, file_id)
944
# TODO: rather than scheduling a set_executable call,
945
# have create_file create the file with the right mode.
946
self.create_file(contents, trans_id)
947
if executable is not None:
948
self.set_executability(executable, trans_id)
951
def new_directory(self, name, parent_id, file_id=None):
952
"""Convenience method to create directories.
954
name is the name of the directory to create.
955
parent_id is the transaction id of the parent directory of the
957
file_id is the inventory ID of the directory, if it is to be versioned.
959
trans_id = self._new_entry(name, parent_id, file_id)
960
self.create_directory(trans_id)
963
def new_symlink(self, name, parent_id, target, file_id=None):
964
"""Convenience method to create symbolic link.
966
name is the name of the symlink to create.
967
parent_id is the transaction id of the parent directory of the symlink.
968
target is a bytestring of the target of the symlink.
969
file_id is the inventory ID of the file, if it is to be versioned.
971
trans_id = self._new_entry(name, parent_id, file_id)
972
self.create_symlink(target, trans_id)
975
def _affected_ids(self):
976
"""Return the set of transform ids affected by the transform"""
977
trans_ids = set(self._removed_id)
978
trans_ids.update(self._new_id.keys())
979
trans_ids.update(self._removed_contents)
980
trans_ids.update(self._new_contents.keys())
981
trans_ids.update(self._new_executability.keys())
982
trans_ids.update(self._new_name.keys())
983
trans_ids.update(self._new_parent.keys())
986
def _get_file_id_maps(self):
987
"""Return mapping of file_ids to trans_ids in the to and from states"""
988
trans_ids = self._affected_ids()
991
# Build up two dicts: trans_ids associated with file ids in the
992
# FROM state, vs the TO state.
993
for trans_id in trans_ids:
994
from_file_id = self.tree_file_id(trans_id)
995
if from_file_id is not None:
996
from_trans_ids[from_file_id] = trans_id
997
to_file_id = self.final_file_id(trans_id)
998
if to_file_id is not None:
999
to_trans_ids[to_file_id] = trans_id
1000
return from_trans_ids, to_trans_ids
1002
def _from_file_data(self, from_trans_id, from_versioned, file_id):
1003
"""Get data about a file in the from (tree) state
1005
Return a (name, parent, kind, executable) tuple
1007
from_path = self._tree_id_paths.get(from_trans_id)
1009
# get data from working tree if versioned
1010
from_entry = self._tree.inventory[file_id]
1011
from_name = from_entry.name
1012
from_parent = from_entry.parent_id
1015
if from_path is None:
1016
# File does not exist in FROM state
1020
# File exists, but is not versioned. Have to use path-
1022
from_name = os.path.basename(from_path)
1023
tree_parent = self.get_tree_parent(from_trans_id)
1024
from_parent = self.tree_file_id(tree_parent)
1025
if from_path is not None:
1026
from_kind, from_executable, from_stats = \
1027
self._tree._comparison_data(from_entry, from_path)
1030
from_executable = False
1031
return from_name, from_parent, from_kind, from_executable
1033
def _to_file_data(self, to_trans_id, from_trans_id, from_executable):
1034
"""Get data about a file in the to (target) state
1036
Return a (name, parent, kind, executable) tuple
1038
to_name = self.final_name(to_trans_id)
1040
to_kind = self.final_kind(to_trans_id)
1043
to_parent = self.final_file_id(self.final_parent(to_trans_id))
1044
if to_trans_id in self._new_executability:
1045
to_executable = self._new_executability[to_trans_id]
1046
elif to_trans_id == from_trans_id:
1047
to_executable = from_executable
1049
to_executable = False
1050
return to_name, to_parent, to_kind, to_executable
1052
def iter_changes(self):
1053
"""Produce output in the same format as Tree.iter_changes.
1055
Will produce nonsensical results if invoked while inventory/filesystem
1056
conflicts (as reported by TreeTransform.find_conflicts()) are present.
1058
This reads the Transform, but only reproduces changes involving a
1059
file_id. Files that are not versioned in either of the FROM or TO
1060
states are not reflected.
1062
final_paths = FinalPaths(self)
1063
from_trans_ids, to_trans_ids = self._get_file_id_maps()
1065
# Now iterate through all active file_ids
1066
for file_id in set(from_trans_ids.keys() + to_trans_ids.keys()):
1068
from_trans_id = from_trans_ids.get(file_id)
1069
# find file ids, and determine versioning state
1070
if from_trans_id is None:
1071
from_versioned = False
1072
from_trans_id = to_trans_ids[file_id]
1074
from_versioned = True
1075
to_trans_id = to_trans_ids.get(file_id)
1076
if to_trans_id is None:
1077
to_versioned = False
1078
to_trans_id = from_trans_id
1082
from_name, from_parent, from_kind, from_executable = \
1083
self._from_file_data(from_trans_id, from_versioned, file_id)
1085
to_name, to_parent, to_kind, to_executable = \
1086
self._to_file_data(to_trans_id, from_trans_id, from_executable)
1088
if not from_versioned:
1091
from_path = self._tree_id_paths.get(from_trans_id)
1092
if not to_versioned:
1095
to_path = final_paths.get_path(to_trans_id)
1096
if from_kind != to_kind:
1098
elif to_kind in ('file', 'symlink') and (
1099
to_trans_id != from_trans_id or
1100
to_trans_id in self._new_contents):
1102
if (not modified and from_versioned == to_versioned and
1103
from_parent==to_parent and from_name == to_name and
1104
from_executable == to_executable):
1106
results.append((file_id, (from_path, to_path), modified,
1107
(from_versioned, to_versioned),
1108
(from_parent, to_parent),
1109
(from_name, to_name),
1110
(from_kind, to_kind),
1111
(from_executable, to_executable)))
1112
return iter(sorted(results, key=lambda x:x[1]))
1114
def get_preview_tree(self):
1115
"""Return a tree representing the result of the transform.
1117
This tree only supports the subset of Tree functionality required
1118
by show_diff_trees. It must only be compared to tt._tree.
1120
return _PreviewTree(self)
1123
class TreeTransform(TreeTransformBase):
1124
"""Represent a tree transformation.
1126
This object is designed to support incremental generation of the transform,
1129
However, it gives optimum performance when parent directories are created
1130
before their contents. The transform is then able to put child files
1131
directly in their parent directory, avoiding later renames.
1133
It is easy to produce malformed transforms, but they are generally
1134
harmless. Attempting to apply a malformed transform will cause an
1135
exception to be raised before any modifications are made to the tree.
1137
Many kinds of malformed transforms can be corrected with the
1138
resolve_conflicts function. The remaining ones indicate programming error,
1139
such as trying to create a file with no path.
1141
Two sets of file creation methods are supplied. Convenience methods are:
1146
These are composed of the low-level methods:
1148
* create_file or create_directory or create_symlink
1152
Transform/Transaction ids
1153
-------------------------
1154
trans_ids are temporary ids assigned to all files involved in a transform.
1155
It's possible, even common, that not all files in the Tree have trans_ids.
1157
trans_ids are used because filenames and file_ids are not good enough
1158
identifiers; filenames change, and not all files have file_ids. File-ids
1159
are also associated with trans-ids, so that moving a file moves its
1162
trans_ids are only valid for the TreeTransform that generated them.
1166
Limbo is a temporary directory use to hold new versions of files.
1167
Files are added to limbo by create_file, create_directory, create_symlink,
1168
and their convenience variants (new_*). Files may be removed from limbo
1169
using cancel_creation. Files are renamed from limbo into their final
1170
location as part of TreeTransform.apply
1172
Limbo must be cleaned up, by either calling TreeTransform.apply or
1173
calling TreeTransform.finalize.
1175
Files are placed into limbo inside their parent directories, where
1176
possible. This reduces subsequent renames, and makes operations involving
1177
lots of files faster. This optimization is only possible if the parent
1178
directory is created *before* creating any of its children, so avoid
1179
creating children before parents, where possible.
1183
This temporary directory is used by _FileMover for storing files that are
1184
about to be deleted. In case of rollback, the files will be restored.
1185
FileMover does not delete files until it is sure that a rollback will not
1188
def __init__(self, tree, pb=DummyProgress()):
1189
"""Note: a tree_write lock is taken on the tree.
1191
Use TreeTransform.finalize() to release the lock (can be omitted if
1192
TreeTransform.apply() called).
1194
tree.lock_tree_write()
1197
limbodir = urlutils.local_path_from_url(
1198
tree._transport.abspath('limbo'))
1202
if e.errno == errno.EEXIST:
1203
raise ExistingLimbo(limbodir)
1204
deletiondir = urlutils.local_path_from_url(
1205
tree._transport.abspath('pending-deletion'))
1207
os.mkdir(deletiondir)
1209
if e.errno == errno.EEXIST:
1210
raise errors.ExistingPendingDeletion(deletiondir)
1215
TreeTransformBase.__init__(self, tree, limbodir, pb,
1216
tree.case_sensitive)
1217
self._deletiondir = deletiondir
1219
def apply(self, no_conflicts=False, precomputed_delta=None, _mover=None):
1220
"""Apply all changes to the inventory and filesystem.
1222
If filesystem or inventory conflicts are present, MalformedTransform
1225
If apply succeeds, finalize is not necessary.
1227
:param no_conflicts: if True, the caller guarantees there are no
1228
conflicts, so no check is made.
1229
:param precomputed_delta: An inventory delta to use instead of
1231
:param _mover: Supply an alternate FileMover, for testing
1233
if not no_conflicts:
1234
conflicts = self.find_conflicts()
1235
if len(conflicts) != 0:
1236
raise MalformedTransform(conflicts=conflicts)
1237
child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
1239
if precomputed_delta is None:
1240
child_pb.update('Apply phase', 0, 2)
1241
inventory_delta = self._generate_inventory_delta()
1244
inventory_delta = precomputed_delta
1247
mover = _FileMover()
1251
child_pb.update('Apply phase', 0 + offset, 2 + offset)
1252
self._apply_removals(mover)
1253
child_pb.update('Apply phase', 1 + offset, 2 + offset)
1254
modified_paths = self._apply_insertions(mover)
1259
mover.apply_deletions()
1262
self._tree.apply_inventory_delta(inventory_delta)
1265
return _TransformResults(modified_paths, self.rename_count)
1267
def _generate_inventory_delta(self):
1268
"""Generate an inventory delta for the current transform."""
1269
inventory_delta = []
1270
child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
1271
new_paths = self._inventory_altered()
1272
total_entries = len(new_paths) + len(self._removed_id)
1274
for num, trans_id in enumerate(self._removed_id):
1276
child_pb.update('removing file', num, total_entries)
1277
if trans_id == self._new_root:
1278
file_id = self._tree.get_root_id()
1280
file_id = self.tree_file_id(trans_id)
1281
# File-id isn't really being deleted, just moved
1282
if file_id in self._r_new_id:
1284
path = self._tree_id_paths[trans_id]
1285
inventory_delta.append((path, None, file_id, None))
1286
new_path_file_ids = dict((t, self.final_file_id(t)) for p, t in
1288
entries = self._tree.iter_entries_by_dir(
1289
new_path_file_ids.values())
1290
old_paths = dict((e.file_id, p) for p, e in entries)
1292
for num, (path, trans_id) in enumerate(new_paths):
1294
child_pb.update('adding file',
1295
num + len(self._removed_id), total_entries)
1296
file_id = new_path_file_ids[trans_id]
1301
kind = self.final_kind(trans_id)
1303
kind = self._tree.stored_kind(file_id)
1304
parent_trans_id = self.final_parent(trans_id)
1305
parent_file_id = new_path_file_ids.get(parent_trans_id)
1306
if parent_file_id is None:
1307
parent_file_id = self.final_file_id(parent_trans_id)
1308
if trans_id in self._new_reference_revision:
1309
new_entry = inventory.TreeReference(
1311
self._new_name[trans_id],
1312
self.final_file_id(self._new_parent[trans_id]),
1313
None, self._new_reference_revision[trans_id])
1315
new_entry = inventory.make_entry(kind,
1316
self.final_name(trans_id),
1317
parent_file_id, file_id)
1318
old_path = old_paths.get(new_entry.file_id)
1319
new_executability = self._new_executability.get(trans_id)
1320
if new_executability is not None:
1321
new_entry.executable = new_executability
1322
inventory_delta.append(
1323
(old_path, path, new_entry.file_id, new_entry))
1326
return inventory_delta
1328
def _apply_removals(self, mover):
1329
"""Perform tree operations that remove directory/inventory names.
1331
That is, delete files that are to be deleted, and put any files that
1332
need renaming into limbo. This must be done in strict child-to-parent
1335
If inventory_delta is None, no inventory delta generation is performed.
1337
tree_paths = list(self._tree_path_ids.iteritems())
1338
tree_paths.sort(reverse=True)
1339
child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
1341
for num, data in enumerate(tree_paths):
1342
path, trans_id = data
1343
child_pb.update('removing file', num, len(tree_paths))
1344
full_path = self._tree.abspath(path)
1345
if trans_id in self._removed_contents:
1346
mover.pre_delete(full_path, os.path.join(self._deletiondir,
1348
elif trans_id in self._new_name or trans_id in \
1351
mover.rename(full_path, self._limbo_name(trans_id))
1353
if e.errno != errno.ENOENT:
1356
self.rename_count += 1
1360
def _apply_insertions(self, mover):
1361
"""Perform tree operations that insert directory/inventory names.
1363
That is, create any files that need to be created, and restore from
1364
limbo any files that needed renaming. This must be done in strict
1365
parent-to-child order.
1367
If inventory_delta is None, no inventory delta is calculated, and
1368
no list of modified paths is returned.
1370
new_paths = self.new_paths(filesystem_only=True)
1372
new_path_file_ids = dict((t, self.final_file_id(t)) for p, t in
1374
child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
1376
for num, (path, trans_id) in enumerate(new_paths):
1378
child_pb.update('adding file', num, len(new_paths))
1379
full_path = self._tree.abspath(path)
1380
if trans_id in self._needs_rename:
1382
mover.rename(self._limbo_name(trans_id), full_path)
1384
# We may be renaming a dangling inventory id
1385
if e.errno != errno.ENOENT:
1388
self.rename_count += 1
1389
if (trans_id in self._new_contents or
1390
self.path_changed(trans_id)):
1391
if trans_id in self._new_contents:
1392
modified_paths.append(full_path)
1393
if trans_id in self._new_executability:
1394
self._set_executability(path, trans_id)
1397
self._new_contents.clear()
1398
return modified_paths
1401
class TransformPreview(TreeTransformBase):
1402
"""A TreeTransform for generating preview trees.
1404
Unlike TreeTransform, this version works when the input tree is a
1405
RevisionTree, rather than a WorkingTree. As a result, it tends to ignore
1406
unversioned files in the input tree.
1409
def __init__(self, tree, pb=DummyProgress(), case_sensitive=True):
1411
limbodir = tempfile.mkdtemp(prefix='bzr-limbo-')
1412
TreeTransformBase.__init__(self, tree, limbodir, pb, case_sensitive)
1414
def canonical_path(self, path):
1417
def tree_kind(self, trans_id):
1418
path = self._tree_id_paths.get(trans_id)
1420
raise NoSuchFile(None)
1421
file_id = self._tree.path2id(path)
1422
return self._tree.kind(file_id)
1424
def _set_mode(self, trans_id, mode_id, typefunc):
1425
"""Set the mode of new file contents.
1426
The mode_id is the existing file to get the mode from (often the same
1427
as trans_id). The operation is only performed if there's a mode match
1428
according to typefunc.
1430
# is it ok to ignore this? probably
1433
def iter_tree_children(self, parent_id):
1434
"""Iterate through the entry's tree children, if any"""
1436
path = self._tree_id_paths[parent_id]
1439
file_id = self.tree_file_id(parent_id)
1442
children = getattr(self._tree.inventory[file_id], 'children', {})
1443
for child in children:
1444
childpath = joinpath(path, child)
1445
yield self.trans_id_tree_path(childpath)
1448
class _PreviewTree(tree.Tree):
1449
"""Partial implementation of Tree to support show_diff_trees"""
1451
def __init__(self, transform):
1452
self._transform = transform
1453
self._final_paths = FinalPaths(transform)
1454
self.__by_parent = None
1455
self._parent_ids = []
1457
def _changes(self, file_id):
1458
for changes in self._transform.iter_changes():
1459
if changes[0] == file_id:
1462
def _content_change(self, file_id):
1463
"""Return True if the content of this file changed"""
1464
changes = self._changes(file_id)
1465
# changes[2] is true if the file content changed. See
1466
# InterTree.iter_changes.
1467
return (changes is not None and changes[2])
1469
def _get_repository(self):
1470
repo = getattr(self._transform._tree, '_repository', None)
1472
repo = self._transform._tree.branch.repository
1475
def _iter_parent_trees(self):
1476
for revision_id in self.get_parent_ids():
1478
yield self.revision_tree(revision_id)
1479
except errors.NoSuchRevisionInTree:
1480
yield self._get_repository().revision_tree(revision_id)
1482
def _get_file_revision(self, file_id, vf, tree_revision):
1483
parent_keys = [(file_id, self._file_revision(t, file_id)) for t in
1484
self._iter_parent_trees()]
1485
vf.add_lines((file_id, tree_revision), parent_keys,
1486
self.get_file(file_id).readlines())
1487
repo = self._get_repository()
1488
base_vf = repo.texts
1489
if base_vf not in vf.fallback_versionedfiles:
1490
vf.fallback_versionedfiles.append(base_vf)
1491
return tree_revision
1493
def _stat_limbo_file(self, file_id):
1494
trans_id = self._transform.trans_id_file_id(file_id)
1495
name = self._transform._limbo_name(trans_id)
1496
return os.lstat(name)
1499
def _by_parent(self):
1500
if self.__by_parent is None:
1501
self.__by_parent = self._transform.by_parent()
1502
return self.__by_parent
1504
def lock_read(self):
1505
# Perhaps in theory, this should lock the TreeTransform?
1512
def inventory(self):
1513
"""This Tree does not use inventory as its backing data."""
1514
raise NotImplementedError(_PreviewTree.inventory)
1516
def get_root_id(self):
1517
return self._transform.final_file_id(self._transform.root)
1519
def all_file_ids(self):
1520
tree_ids = set(self._transform._tree.all_file_ids())
1521
tree_ids.difference_update(self._transform.tree_file_id(t)
1522
for t in self._transform._removed_id)
1523
tree_ids.update(self._transform._new_id.values())
1527
return iter(self.all_file_ids())
1529
def paths2ids(self, specific_files, trees=None, require_versioned=False):
1530
"""See Tree.paths2ids"""
1531
to_find = set(specific_files)
1533
for (file_id, paths, changed, versioned, parent, name, kind,
1534
executable) in self._transform.iter_changes():
1535
if paths[1] in to_find:
1537
to_find.remove(paths[1])
1538
result.update(self._transform._tree.paths2ids(to_find,
1539
trees=[], require_versioned=require_versioned))
1542
def _path2trans_id(self, path):
1543
segments = splitpath(path)
1544
cur_parent = self._transform.root
1545
for cur_segment in segments:
1546
for child in self._all_children(cur_parent):
1547
if self._transform.final_name(child) == cur_segment:
1554
def path2id(self, path):
1555
return self._transform.final_file_id(self._path2trans_id(path))
1557
def id2path(self, file_id):
1558
trans_id = self._transform.trans_id_file_id(file_id)
1560
return self._final_paths._determine_path(trans_id)
1562
raise errors.NoSuchId(self, file_id)
1564
def _all_children(self, trans_id):
1565
children = set(self._transform.iter_tree_children(trans_id))
1566
# children in the _new_parent set are provided by _by_parent.
1567
children.difference_update(self._transform._new_parent.keys())
1568
children.update(self._by_parent.get(trans_id, []))
1571
def _make_inv_entries(self, ordered_entries, specific_file_ids):
1572
for trans_id, parent_file_id in ordered_entries:
1573
file_id = self._transform.final_file_id(trans_id)
1576
if (specific_file_ids is not None
1577
and file_id not in specific_file_ids):
1580
kind = self._transform.final_kind(trans_id)
1582
kind = self._transform._tree.stored_kind(file_id)
1583
new_entry = inventory.make_entry(
1585
self._transform.final_name(trans_id),
1586
parent_file_id, file_id)
1587
yield new_entry, trans_id
1589
def _list_files_by_dir(self):
1590
todo = [ROOT_PARENT]
1592
while len(todo) > 0:
1594
parent_file_id = self._transform.final_file_id(parent)
1595
children = list(self._all_children(parent))
1596
paths = dict(zip(children, self._final_paths.get_paths(children)))
1597
children.sort(key=paths.get)
1598
todo.extend(reversed(children))
1599
for trans_id in children:
1600
ordered_ids.append((trans_id, parent_file_id))
1603
def iter_entries_by_dir(self, specific_file_ids=None):
1604
# This may not be a maximally efficient implementation, but it is
1605
# reasonably straightforward. An implementation that grafts the
1606
# TreeTransform changes onto the tree's iter_entries_by_dir results
1607
# might be more efficient, but requires tricky inferences about stack
1609
ordered_ids = self._list_files_by_dir()
1610
for entry, trans_id in self._make_inv_entries(ordered_ids,
1612
yield unicode(self._final_paths.get_path(trans_id)), entry
1614
def list_files(self, include_root=False):
1615
"""See Tree.list_files."""
1616
# XXX This should behave like WorkingTree.list_files, but is really
1617
# more like RevisionTree.list_files.
1618
for path, entry in self.iter_entries_by_dir():
1619
if entry.name == '' and not include_root:
1621
yield path, 'V', entry.kind, entry.file_id, entry
1623
def kind(self, file_id):
1624
trans_id = self._transform.trans_id_file_id(file_id)
1625
return self._transform.final_kind(trans_id)
1627
def stored_kind(self, file_id):
1628
trans_id = self._transform.trans_id_file_id(file_id)
1630
return self._transform._new_contents[trans_id]
1632
return self._transform._tree.stored_kind(file_id)
1634
def get_file_mtime(self, file_id, path=None):
1635
"""See Tree.get_file_mtime"""
1636
if not self._content_change(file_id):
1637
return self._transform._tree.get_file_mtime(file_id, path)
1638
return self._stat_limbo_file(file_id).st_mtime
1640
def get_file_size(self, file_id):
1641
"""See Tree.get_file_size"""
1642
if self.kind(file_id) == 'file':
1643
return self._transform._tree.get_file_size(file_id)
1647
def get_file_sha1(self, file_id, path=None, stat_value=None):
1648
return self._transform._tree.get_file_sha1(file_id)
1650
def is_executable(self, file_id, path=None):
1651
trans_id = self._transform.trans_id_file_id(file_id)
1653
return self._transform._new_executability[trans_id]
1655
return self._transform._tree.is_executable(file_id, path)
1657
def path_content_summary(self, path):
1658
trans_id = self._path2trans_id(path)
1659
tt = self._transform
1660
tree_path = tt._tree_id_paths.get(trans_id)
1661
kind = tt._new_contents.get(trans_id)
1663
if tree_path is None or trans_id in tt._removed_contents:
1664
return 'missing', None, None, None
1665
summary = tt._tree.path_content_summary(tree_path)
1666
kind, size, executable, link_or_sha1 = summary
1669
limbo_name = tt._limbo_name(trans_id)
1670
if trans_id in tt._new_reference_revision:
1671
kind = 'tree-reference'
1673
statval = os.lstat(limbo_name)
1674
size = statval.st_size
1675
if not supports_executable():
1678
executable = statval.st_mode & S_IEXEC
1682
if kind == 'symlink':
1683
link_or_sha1 = os.readlink(limbo_name)
1684
if supports_executable():
1685
executable = tt._new_executability.get(trans_id, executable)
1686
return kind, size, executable, link_or_sha1
1688
def iter_changes(self, from_tree, include_unchanged=False,
1689
specific_files=None, pb=None, extra_trees=None,
1690
require_versioned=True, want_unversioned=False):
1691
"""See InterTree.iter_changes.
1693
This implementation does not support include_unchanged, specific_files,
1694
or want_unversioned. extra_trees, require_versioned, and pb are
1697
if from_tree is not self._transform._tree:
1698
raise ValueError('from_tree must be transform source tree.')
1699
if include_unchanged:
1700
raise ValueError('include_unchanged is not supported')
1701
if specific_files is not None:
1702
raise ValueError('specific_files is not supported')
1703
if want_unversioned:
1704
raise ValueError('want_unversioned is not supported')
1705
return self._transform.iter_changes()
1707
def get_file(self, file_id, path=None):
1708
"""See Tree.get_file"""
1709
if not self._content_change(file_id):
1710
return self._transform._tree.get_file(file_id, path)
1711
trans_id = self._transform.trans_id_file_id(file_id)
1712
name = self._transform._limbo_name(trans_id)
1713
return open(name, 'rb')
1715
def get_file_text(self, file_id):
1716
text_file = self.get_file(file_id)
1718
return text_file.read()
1722
def annotate_iter(self, file_id,
1723
default_revision=_mod_revision.CURRENT_REVISION):
1724
changes = self._changes(file_id)
1728
changed_content, versioned, kind = (changes[2], changes[3],
1732
get_old = (kind[0] == 'file' and versioned[0])
1734
old_annotation = self._transform._tree.annotate_iter(file_id,
1735
default_revision=default_revision)
1739
return old_annotation
1740
if not changed_content:
1741
return old_annotation
1742
return annotate.reannotate([old_annotation],
1743
self.get_file(file_id).readlines(),
1746
def get_symlink_target(self, file_id):
1747
"""See Tree.get_symlink_target"""
1748
if not self._content_change(file_id):
1749
return self._transform._tree.get_symlink_target(file_id)
1750
trans_id = self._transform.trans_id_file_id(file_id)
1751
name = self._transform._limbo_name(trans_id)
1752
return os.readlink(name)
1754
def walkdirs(self, prefix=''):
1755
pending = [self._transform.root]
1756
while len(pending) > 0:
1757
parent_id = pending.pop()
1760
prefix = prefix.rstrip('/')
1761
parent_path = self._final_paths.get_path(parent_id)
1762
parent_file_id = self._transform.final_file_id(parent_id)
1763
for child_id in self._all_children(parent_id):
1764
path_from_root = self._final_paths.get_path(child_id)
1765
basename = self._transform.final_name(child_id)
1766
file_id = self._transform.final_file_id(child_id)
1768
kind = self._transform.final_kind(child_id)
1769
versioned_kind = kind
1772
versioned_kind = self._transform._tree.stored_kind(file_id)
1773
if versioned_kind == 'directory':
1774
subdirs.append(child_id)
1775
children.append((path_from_root, basename, kind, None,
1776
file_id, versioned_kind))
1778
if parent_path.startswith(prefix):
1779
yield (parent_path, parent_file_id), children
1780
pending.extend(sorted(subdirs, key=self._final_paths.get_path,
1783
def get_parent_ids(self):
1784
return self._parent_ids
1786
def set_parent_ids(self, parent_ids):
1787
self._parent_ids = parent_ids
1789
def get_revision_tree(self, revision_id):
1790
return self._transform._tree.get_revision_tree(revision_id)
1793
def joinpath(parent, child):
1794
"""Join tree-relative paths, handling the tree root specially"""
1795
if parent is None or parent == "":
1798
return pathjoin(parent, child)
1801
class FinalPaths(object):
1802
"""Make path calculation cheap by memoizing paths.
1804
The underlying tree must not be manipulated between calls, or else
1805
the results will likely be incorrect.
1807
def __init__(self, transform):
1808
object.__init__(self)
1809
self._known_paths = {}
1810
self.transform = transform
1812
def _determine_path(self, trans_id):
1813
if trans_id == self.transform.root:
1815
name = self.transform.final_name(trans_id)
1816
parent_id = self.transform.final_parent(trans_id)
1817
if parent_id == self.transform.root:
1820
return pathjoin(self.get_path(parent_id), name)
1822
def get_path(self, trans_id):
1823
"""Find the final path associated with a trans_id"""
1824
if trans_id not in self._known_paths:
1825
self._known_paths[trans_id] = self._determine_path(trans_id)
1826
return self._known_paths[trans_id]
1828
def get_paths(self, trans_ids):
1829
return [(self.get_path(t), t) for t in trans_ids]
1833
def topology_sorted_ids(tree):
1834
"""Determine the topological order of the ids in a tree"""
1835
file_ids = list(tree)
1836
file_ids.sort(key=tree.id2path)
1840
def build_tree(tree, wt, accelerator_tree=None, hardlink=False,
1841
delta_from_tree=False):
1842
"""Create working tree for a branch, using a TreeTransform.
1844
This function should be used on empty trees, having a tree root at most.
1845
(see merge and revert functionality for working with existing trees)
1847
Existing files are handled like so:
1849
- Existing bzrdirs take precedence over creating new items. They are
1850
created as '%s.diverted' % name.
1851
- Otherwise, if the content on disk matches the content we are building,
1852
it is silently replaced.
1853
- Otherwise, conflict resolution will move the old file to 'oldname.moved'.
1855
:param tree: The tree to convert wt into a copy of
1856
:param wt: The working tree that files will be placed into
1857
:param accelerator_tree: A tree which can be used for retrieving file
1858
contents more quickly than tree itself, i.e. a workingtree. tree
1859
will be used for cases where accelerator_tree's content is different.
1860
:param hardlink: If true, hard-link files to accelerator_tree, where
1861
possible. accelerator_tree must implement abspath, i.e. be a
1863
:param delta_from_tree: If true, build_tree may use the input Tree to
1864
generate the inventory delta.
1866
wt.lock_tree_write()
1870
if accelerator_tree is not None:
1871
accelerator_tree.lock_read()
1873
return _build_tree(tree, wt, accelerator_tree, hardlink,
1876
if accelerator_tree is not None:
1877
accelerator_tree.unlock()
1884
def _build_tree(tree, wt, accelerator_tree, hardlink, delta_from_tree):
1885
"""See build_tree."""
1886
for num, _unused in enumerate(wt.all_file_ids()):
1887
if num > 0: # more than just a root
1888
raise errors.WorkingTreeAlreadyPopulated(base=wt.basedir)
1889
existing_files = set()
1890
for dir, files in wt.walkdirs():
1891
existing_files.update(f[0] for f in files)
1893
top_pb = bzrlib.ui.ui_factory.nested_progress_bar()
1894
pp = ProgressPhase("Build phase", 2, top_pb)
1895
if tree.inventory.root is not None:
1896
# This is kind of a hack: we should be altering the root
1897
# as part of the regular tree shape diff logic.
1898
# The conditional test here is to avoid doing an
1899
# expensive operation (flush) every time the root id
1900
# is set within the tree, nor setting the root and thus
1901
# marking the tree as dirty, because we use two different
1902
# idioms here: tree interfaces and inventory interfaces.
1903
if wt.get_root_id() != tree.get_root_id():
1904
wt.set_root_id(tree.get_root_id())
1906
tt = TreeTransform(wt)
1910
file_trans_id[wt.get_root_id()] = \
1911
tt.trans_id_tree_file_id(wt.get_root_id())
1912
pb = bzrlib.ui.ui_factory.nested_progress_bar()
1914
deferred_contents = []
1916
total = len(tree.inventory)
1918
precomputed_delta = []
1920
precomputed_delta = None
1921
for num, (tree_path, entry) in \
1922
enumerate(tree.inventory.iter_entries_by_dir()):
1923
pb.update("Building tree", num - len(deferred_contents), total)
1924
if entry.parent_id is None:
1927
file_id = entry.file_id
1929
precomputed_delta.append((None, tree_path, file_id, entry))
1930
if tree_path in existing_files:
1931
target_path = wt.abspath(tree_path)
1932
kind = file_kind(target_path)
1933
if kind == "directory":
1935
bzrdir.BzrDir.open(target_path)
1936
except errors.NotBranchError:
1940
if (file_id not in divert and
1941
_content_match(tree, entry, file_id, kind,
1943
tt.delete_contents(tt.trans_id_tree_path(tree_path))
1944
if kind == 'directory':
1946
parent_id = file_trans_id[entry.parent_id]
1947
if entry.kind == 'file':
1948
# We *almost* replicate new_by_entry, so that we can defer
1949
# getting the file text, and get them all at once.
1950
trans_id = tt.create_path(entry.name, parent_id)
1951
file_trans_id[file_id] = trans_id
1952
tt.version_file(file_id, trans_id)
1953
executable = tree.is_executable(file_id, tree_path)
1955
tt.set_executability(executable, trans_id)
1956
deferred_contents.append((file_id, trans_id))
1958
file_trans_id[file_id] = new_by_entry(tt, entry, parent_id,
1961
new_trans_id = file_trans_id[file_id]
1962
old_parent = tt.trans_id_tree_path(tree_path)
1963
_reparent_children(tt, old_parent, new_trans_id)
1964
offset = num + 1 - len(deferred_contents)
1965
_create_files(tt, tree, deferred_contents, pb, offset,
1966
accelerator_tree, hardlink)
1970
divert_trans = set(file_trans_id[f] for f in divert)
1971
resolver = lambda t, c: resolve_checkout(t, c, divert_trans)
1972
raw_conflicts = resolve_conflicts(tt, pass_func=resolver)
1973
if len(raw_conflicts) > 0:
1974
precomputed_delta = None
1975
conflicts = cook_conflicts(raw_conflicts, tt)
1976
for conflict in conflicts:
1979
wt.add_conflicts(conflicts)
1980
except errors.UnsupportedOperation:
1982
result = tt.apply(no_conflicts=True,
1983
precomputed_delta=precomputed_delta)
1990
def _create_files(tt, tree, desired_files, pb, offset, accelerator_tree,
1992
total = len(desired_files) + offset
1993
if accelerator_tree is None:
1994
new_desired_files = desired_files
1996
iter = accelerator_tree.iter_changes(tree, include_unchanged=True)
1997
unchanged = dict((f, p[1]) for (f, p, c, v, d, n, k, e)
1998
in iter if not (c or e[0] != e[1]))
1999
new_desired_files = []
2001
for file_id, trans_id in desired_files:
2002
accelerator_path = unchanged.get(file_id)
2003
if accelerator_path is None:
2004
new_desired_files.append((file_id, trans_id))
2006
pb.update('Adding file contents', count + offset, total)
2008
tt.create_hardlink(accelerator_tree.abspath(accelerator_path),
2011
contents = accelerator_tree.get_file(file_id, accelerator_path)
2013
tt.create_file(contents, trans_id)
2018
for count, (trans_id, contents) in enumerate(tree.iter_files_bytes(
2019
new_desired_files)):
2020
tt.create_file(contents, trans_id)
2021
pb.update('Adding file contents', count + offset, total)
2024
def _reparent_children(tt, old_parent, new_parent):
2025
for child in tt.iter_tree_children(old_parent):
2026
tt.adjust_path(tt.final_name(child), new_parent, child)
2028
def _reparent_transform_children(tt, old_parent, new_parent):
2029
by_parent = tt.by_parent()
2030
for child in by_parent[old_parent]:
2031
tt.adjust_path(tt.final_name(child), new_parent, child)
2032
return by_parent[old_parent]
2034
def _content_match(tree, entry, file_id, kind, target_path):
2035
if entry.kind != kind:
2037
if entry.kind == "directory":
2039
if entry.kind == "file":
2040
if tree.get_file(file_id).read() == file(target_path, 'rb').read():
2042
elif entry.kind == "symlink":
2043
if tree.get_symlink_target(file_id) == os.readlink(target_path):
2048
def resolve_checkout(tt, conflicts, divert):
2049
new_conflicts = set()
2050
for c_type, conflict in ((c[0], c) for c in conflicts):
2051
# Anything but a 'duplicate' would indicate programmer error
2052
if c_type != 'duplicate':
2053
raise AssertionError(c_type)
2054
# Now figure out which is new and which is old
2055
if tt.new_contents(conflict[1]):
2056
new_file = conflict[1]
2057
old_file = conflict[2]
2059
new_file = conflict[2]
2060
old_file = conflict[1]
2062
# We should only get here if the conflict wasn't completely
2064
final_parent = tt.final_parent(old_file)
2065
if new_file in divert:
2066
new_name = tt.final_name(old_file)+'.diverted'
2067
tt.adjust_path(new_name, final_parent, new_file)
2068
new_conflicts.add((c_type, 'Diverted to',
2069
new_file, old_file))
2071
new_name = tt.final_name(old_file)+'.moved'
2072
tt.adjust_path(new_name, final_parent, old_file)
2073
new_conflicts.add((c_type, 'Moved existing file to',
2074
old_file, new_file))
2075
return new_conflicts
2078
def new_by_entry(tt, entry, parent_id, tree):
2079
"""Create a new file according to its inventory entry"""
2083
contents = tree.get_file(entry.file_id).readlines()
2084
executable = tree.is_executable(entry.file_id)
2085
return tt.new_file(name, parent_id, contents, entry.file_id,
2087
elif kind in ('directory', 'tree-reference'):
2088
trans_id = tt.new_directory(name, parent_id, entry.file_id)
2089
if kind == 'tree-reference':
2090
tt.set_tree_reference(entry.reference_revision, trans_id)
2092
elif kind == 'symlink':
2093
target = tree.get_symlink_target(entry.file_id)
2094
return tt.new_symlink(name, parent_id, target, entry.file_id)
2096
raise errors.BadFileKindError(name, kind)
2099
def create_by_entry(tt, entry, tree, trans_id, lines=None, mode_id=None):
2100
"""Create new file contents according to an inventory entry."""
2101
if entry.kind == "file":
2103
lines = tree.get_file(entry.file_id).readlines()
2104
tt.create_file(lines, trans_id, mode_id=mode_id)
2105
elif entry.kind == "symlink":
2106
tt.create_symlink(tree.get_symlink_target(entry.file_id), trans_id)
2107
elif entry.kind == "directory":
2108
tt.create_directory(trans_id)
2111
def create_entry_executability(tt, entry, trans_id):
2112
"""Set the executability of a trans_id according to an inventory entry"""
2113
if entry.kind == "file":
2114
tt.set_executability(entry.executable, trans_id)
2117
def get_backup_name(entry, by_parent, parent_trans_id, tt):
2118
return _get_backup_name(entry.name, by_parent, parent_trans_id, tt)
2121
def _get_backup_name(name, by_parent, parent_trans_id, tt):
2122
"""Produce a backup-style name that appears to be available"""
2126
yield "%s.~%d~" % (name, counter)
2128
for new_name in name_gen():
2129
if not tt.has_named_child(by_parent, parent_trans_id, new_name):
2133
def _entry_changes(file_id, entry, working_tree):
2134
"""Determine in which ways the inventory entry has changed.
2136
Returns booleans: has_contents, content_mod, meta_mod
2137
has_contents means there are currently contents, but they differ
2138
contents_mod means contents need to be modified
2139
meta_mod means the metadata needs to be modified
2141
cur_entry = working_tree.inventory[file_id]
2143
working_kind = working_tree.kind(file_id)
2146
has_contents = False
2149
if has_contents is True:
2150
if entry.kind != working_kind:
2151
contents_mod, meta_mod = True, False
2153
cur_entry._read_tree_state(working_tree.id2path(file_id),
2155
contents_mod, meta_mod = entry.detect_changes(cur_entry)
2156
cur_entry._forget_tree_state()
2157
return has_contents, contents_mod, meta_mod
2160
def revert(working_tree, target_tree, filenames, backups=False,
2161
pb=DummyProgress(), change_reporter=None):
2162
"""Revert a working tree's contents to those of a target tree."""
2163
target_tree.lock_read()
2164
tt = TreeTransform(working_tree, pb)
2166
pp = ProgressPhase("Revert phase", 3, pb)
2167
conflicts, merge_modified = _prepare_revert_transform(
2168
working_tree, target_tree, tt, filenames, backups, pp)
2170
change_reporter = delta._ChangeReporter(
2171
unversioned_filter=working_tree.is_ignored)
2172
delta.report_changes(tt.iter_changes(), change_reporter)
2173
for conflict in conflicts:
2177
working_tree.set_merge_modified(merge_modified)
2179
target_tree.unlock()
2185
def _prepare_revert_transform(working_tree, target_tree, tt, filenames,
2186
backups, pp, basis_tree=None,
2187
merge_modified=None):
2189
child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
2191
if merge_modified is None:
2192
merge_modified = working_tree.merge_modified()
2193
merge_modified = _alter_files(working_tree, target_tree, tt,
2194
child_pb, filenames, backups,
2195
merge_modified, basis_tree)
2199
child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
2201
raw_conflicts = resolve_conflicts(tt, child_pb,
2202
lambda t, c: conflict_pass(t, c, target_tree))
2205
conflicts = cook_conflicts(raw_conflicts, tt)
2206
return conflicts, merge_modified
2209
def _alter_files(working_tree, target_tree, tt, pb, specific_files,
2210
backups, merge_modified, basis_tree=None):
2211
if basis_tree is not None:
2212
basis_tree.lock_read()
2213
change_list = target_tree.iter_changes(working_tree,
2214
specific_files=specific_files, pb=pb)
2215
if target_tree.get_root_id() is None:
2221
for id_num, (file_id, path, changed_content, versioned, parent, name,
2222
kind, executable) in enumerate(change_list):
2223
if skip_root and file_id[0] is not None and parent[0] is None:
2225
trans_id = tt.trans_id_file_id(file_id)
2228
keep_content = False
2229
if kind[0] == 'file' and (backups or kind[1] is None):
2230
wt_sha1 = working_tree.get_file_sha1(file_id)
2231
if merge_modified.get(file_id) != wt_sha1:
2232
# acquire the basis tree lazily to prevent the
2233
# expense of accessing it when it's not needed ?
2234
# (Guessing, RBC, 200702)
2235
if basis_tree is None:
2236
basis_tree = working_tree.basis_tree()
2237
basis_tree.lock_read()
2238
if file_id in basis_tree:
2239
if wt_sha1 != basis_tree.get_file_sha1(file_id):
2241
elif kind[1] is None and not versioned[1]:
2243
if kind[0] is not None:
2244
if not keep_content:
2245
tt.delete_contents(trans_id)
2246
elif kind[1] is not None:
2247
parent_trans_id = tt.trans_id_file_id(parent[0])
2248
by_parent = tt.by_parent()
2249
backup_name = _get_backup_name(name[0], by_parent,
2250
parent_trans_id, tt)
2251
tt.adjust_path(backup_name, parent_trans_id, trans_id)
2252
new_trans_id = tt.create_path(name[0], parent_trans_id)
2253
if versioned == (True, True):
2254
tt.unversion_file(trans_id)
2255
tt.version_file(file_id, new_trans_id)
2256
# New contents should have the same unix perms as old
2259
trans_id = new_trans_id
2260
if kind[1] in ('directory', 'tree-reference'):
2261
tt.create_directory(trans_id)
2262
if kind[1] == 'tree-reference':
2263
revision = target_tree.get_reference_revision(file_id,
2265
tt.set_tree_reference(revision, trans_id)
2266
elif kind[1] == 'symlink':
2267
tt.create_symlink(target_tree.get_symlink_target(file_id),
2269
elif kind[1] == 'file':
2270
deferred_files.append((file_id, (trans_id, mode_id)))
2271
if basis_tree is None:
2272
basis_tree = working_tree.basis_tree()
2273
basis_tree.lock_read()
2274
new_sha1 = target_tree.get_file_sha1(file_id)
2275
if (file_id in basis_tree and new_sha1 ==
2276
basis_tree.get_file_sha1(file_id)):
2277
if file_id in merge_modified:
2278
del merge_modified[file_id]
2280
merge_modified[file_id] = new_sha1
2282
# preserve the execute bit when backing up
2283
if keep_content and executable[0] == executable[1]:
2284
tt.set_executability(executable[1], trans_id)
2285
elif kind[1] is not None:
2286
raise AssertionError(kind[1])
2287
if versioned == (False, True):
2288
tt.version_file(file_id, trans_id)
2289
if versioned == (True, False):
2290
tt.unversion_file(trans_id)
2291
if (name[1] is not None and
2292
(name[0] != name[1] or parent[0] != parent[1])):
2293
if name[1] == '' and parent[1] is None:
2294
parent_trans = ROOT_PARENT
2296
parent_trans = tt.trans_id_file_id(parent[1])
2297
tt.adjust_path(name[1], parent_trans, trans_id)
2298
if executable[0] != executable[1] and kind[1] == "file":
2299
tt.set_executability(executable[1], trans_id)
2300
for (trans_id, mode_id), bytes in target_tree.iter_files_bytes(
2302
tt.create_file(bytes, trans_id, mode_id)
2304
if basis_tree is not None:
2306
return merge_modified
2309
def resolve_conflicts(tt, pb=DummyProgress(), pass_func=None):
2310
"""Make many conflict-resolution attempts, but die if they fail"""
2311
if pass_func is None:
2312
pass_func = conflict_pass
2313
new_conflicts = set()
2316
pb.update('Resolution pass', n+1, 10)
2317
conflicts = tt.find_conflicts()
2318
if len(conflicts) == 0:
2319
return new_conflicts
2320
new_conflicts.update(pass_func(tt, conflicts))
2321
raise MalformedTransform(conflicts=conflicts)
2326
def conflict_pass(tt, conflicts, path_tree=None):
2327
"""Resolve some classes of conflicts.
2329
:param tt: The transform to resolve conflicts in
2330
:param conflicts: The conflicts to resolve
2331
:param path_tree: A Tree to get supplemental paths from
2333
new_conflicts = set()
2334
for c_type, conflict in ((c[0], c) for c in conflicts):
2335
if c_type == 'duplicate id':
2336
tt.unversion_file(conflict[1])
2337
new_conflicts.add((c_type, 'Unversioned existing file',
2338
conflict[1], conflict[2], ))
2339
elif c_type == 'duplicate':
2340
# files that were renamed take precedence
2341
final_parent = tt.final_parent(conflict[1])
2342
if tt.path_changed(conflict[1]):
2343
existing_file, new_file = conflict[2], conflict[1]
2345
existing_file, new_file = conflict[1], conflict[2]
2346
new_name = tt.final_name(existing_file)+'.moved'
2347
tt.adjust_path(new_name, final_parent, existing_file)
2348
new_conflicts.add((c_type, 'Moved existing file to',
2349
existing_file, new_file))
2350
elif c_type == 'parent loop':
2351
# break the loop by undoing one of the ops that caused the loop
2353
while not tt.path_changed(cur):
2354
cur = tt.final_parent(cur)
2355
new_conflicts.add((c_type, 'Cancelled move', cur,
2356
tt.final_parent(cur),))
2357
tt.adjust_path(tt.final_name(cur), tt.get_tree_parent(cur), cur)
2359
elif c_type == 'missing parent':
2360
trans_id = conflict[1]
2362
tt.cancel_deletion(trans_id)
2363
new_conflicts.add(('deleting parent', 'Not deleting',
2368
tt.final_name(trans_id)
2370
if path_tree is not None:
2371
file_id = tt.final_file_id(trans_id)
2373
file_id = tt.inactive_file_id(trans_id)
2374
entry = path_tree.inventory[file_id]
2375
# special-case the other tree root (move its
2376
# children to current root)
2377
if entry.parent_id is None:
2379
moved = _reparent_transform_children(
2380
tt, trans_id, tt.root)
2382
new_conflicts.add((c_type, 'Moved to root',
2385
parent_trans_id = tt.trans_id_file_id(
2387
tt.adjust_path(entry.name, parent_trans_id,
2390
tt.create_directory(trans_id)
2391
new_conflicts.add((c_type, 'Created directory', trans_id))
2392
elif c_type == 'unversioned parent':
2393
file_id = tt.inactive_file_id(conflict[1])
2394
# special-case the other tree root (move its children instead)
2395
if path_tree and file_id in path_tree:
2396
if path_tree.inventory[file_id].parent_id is None:
2398
tt.version_file(file_id, conflict[1])
2399
new_conflicts.add((c_type, 'Versioned directory', conflict[1]))
2400
elif c_type == 'non-directory parent':
2401
parent_id = conflict[1]
2402
parent_parent = tt.final_parent(parent_id)
2403
parent_name = tt.final_name(parent_id)
2404
parent_file_id = tt.final_file_id(parent_id)
2405
new_parent_id = tt.new_directory(parent_name + '.new',
2406
parent_parent, parent_file_id)
2407
_reparent_transform_children(tt, parent_id, new_parent_id)
2408
if parent_file_id is not None:
2409
tt.unversion_file(parent_id)
2410
new_conflicts.add((c_type, 'Created directory', new_parent_id))
2411
elif c_type == 'versioning no contents':
2412
tt.cancel_versioning(conflict[1])
2413
return new_conflicts
2416
def cook_conflicts(raw_conflicts, tt):
2417
"""Generate a list of cooked conflicts, sorted by file path"""
2418
from bzrlib.conflicts import Conflict
2419
conflict_iter = iter_cook_conflicts(raw_conflicts, tt)
2420
return sorted(conflict_iter, key=Conflict.sort_key)
2423
def iter_cook_conflicts(raw_conflicts, tt):
2424
from bzrlib.conflicts import Conflict
2426
for conflict in raw_conflicts:
2427
c_type = conflict[0]
2428
action = conflict[1]
2429
modified_path = fp.get_path(conflict[2])
2430
modified_id = tt.final_file_id(conflict[2])
2431
if len(conflict) == 3:
2432
yield Conflict.factory(c_type, action=action, path=modified_path,
2433
file_id=modified_id)
2436
conflicting_path = fp.get_path(conflict[3])
2437
conflicting_id = tt.final_file_id(conflict[3])
2438
yield Conflict.factory(c_type, action=action, path=modified_path,
2439
file_id=modified_id,
2440
conflict_path=conflicting_path,
2441
conflict_file_id=conflicting_id)
2444
class _FileMover(object):
2445
"""Moves and deletes files for TreeTransform, tracking operations"""
2448
self.past_renames = []
2449
self.pending_deletions = []
2451
def rename(self, from_, to):
2452
"""Rename a file from one path to another. Functions like os.rename"""
2454
os.rename(from_, to)
2456
if e.errno in (errno.EEXIST, errno.ENOTEMPTY):
2457
raise errors.FileExists(to, str(e))
2459
self.past_renames.append((from_, to))
2461
def pre_delete(self, from_, to):
2462
"""Rename a file out of the way and mark it for deletion.
2464
Unlike os.unlink, this works equally well for files and directories.
2465
:param from_: The current file path
2466
:param to: A temporary path for the file
2468
self.rename(from_, to)
2469
self.pending_deletions.append(to)
2472
"""Reverse all renames that have been performed"""
2473
for from_, to in reversed(self.past_renames):
2474
os.rename(to, from_)
2475
# after rollback, don't reuse _FileMover
2477
pending_deletions = None
2479
def apply_deletions(self):
2480
"""Apply all marked deletions"""
2481
for path in self.pending_deletions:
2483
# after apply_deletions, don't reuse _FileMover
2485
pending_deletions = None
added
removed
bzrlib/transform.py
