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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):
751
conflicts.append(('versioning bad kind', trans_id, kind))
754
def _executability_conflicts(self):
755
"""Check for bad executability changes.
757
Only versioned files may have their executability set, because
758
1. only versioned entries can have executability under windows
759
2. only files can be executable. (The execute bit on a directory
760
does not indicate searchability)
763
for trans_id in self._new_executability:
764
if self.final_file_id(trans_id) is None:
765
conflicts.append(('unversioned executability', trans_id))
768
non_file = self.final_kind(trans_id) != "file"
772
conflicts.append(('non-file executability', trans_id))
775
def _overwrite_conflicts(self):
776
"""Check for overwrites (not permitted on Win32)"""
778
for trans_id in self._new_contents:
780
self.tree_kind(trans_id)
783
if trans_id not in self._removed_contents:
784
conflicts.append(('overwrite', trans_id,
785
self.final_name(trans_id)))
788
def _duplicate_entries(self, by_parent):
789
"""No directory may have two entries with the same name."""
791
if (self._new_name, self._new_parent) == ({}, {}):
793
for children in by_parent.itervalues():
794
name_ids = [(self.final_name(t), t) for t in children]
795
if not self._case_sensitive_target:
796
name_ids = [(n.lower(), t) for n, t in name_ids]
800
for name, trans_id in name_ids:
802
kind = self.final_kind(trans_id)
805
file_id = self.final_file_id(trans_id)
806
if kind is None and file_id is None:
808
if name == last_name:
809
conflicts.append(('duplicate', last_trans_id, trans_id,
812
last_trans_id = trans_id
815
def _duplicate_ids(self):
816
"""Each inventory id may only be used once"""
818
removed_tree_ids = set((self.tree_file_id(trans_id) for trans_id in
820
all_ids = self._tree.all_file_ids()
821
active_tree_ids = all_ids.difference(removed_tree_ids)
822
for trans_id, file_id in self._new_id.iteritems():
823
if file_id in active_tree_ids:
824
old_trans_id = self.trans_id_tree_file_id(file_id)
825
conflicts.append(('duplicate id', old_trans_id, trans_id))
828
def _parent_type_conflicts(self, by_parent):
829
"""parents must have directory 'contents'."""
831
for parent_id, children in by_parent.iteritems():
832
if parent_id is ROOT_PARENT:
834
if not self._any_contents(children):
836
for child in children:
838
self.final_kind(child)
842
kind = self.final_kind(parent_id)
846
conflicts.append(('missing parent', parent_id))
847
elif kind != "directory":
848
conflicts.append(('non-directory parent', parent_id))
851
def _any_contents(self, trans_ids):
852
"""Return true if any of the trans_ids, will have contents."""
853
for trans_id in trans_ids:
855
kind = self.final_kind(trans_id)
861
def _limbo_name(self, trans_id):
862
"""Generate the limbo name of a file"""
863
limbo_name = self._limbo_files.get(trans_id)
864
if limbo_name is not None:
866
parent = self._new_parent.get(trans_id)
867
# if the parent directory is already in limbo (e.g. when building a
868
# tree), choose a limbo name inside the parent, to reduce further
870
use_direct_path = False
871
if self._new_contents.get(parent) == 'directory':
872
filename = self._new_name.get(trans_id)
873
if filename is not None:
874
if parent not in self._limbo_children:
875
self._limbo_children[parent] = set()
876
self._limbo_children_names[parent] = {}
877
use_direct_path = True
878
# the direct path can only be used if no other file has
879
# already taken this pathname, i.e. if the name is unused, or
880
# if it is already associated with this trans_id.
881
elif self._case_sensitive_target:
882
if (self._limbo_children_names[parent].get(filename)
883
in (trans_id, None)):
884
use_direct_path = True
886
for l_filename, l_trans_id in\
887
self._limbo_children_names[parent].iteritems():
888
if l_trans_id == trans_id:
890
if l_filename.lower() == filename.lower():
893
use_direct_path = True
896
limbo_name = pathjoin(self._limbo_files[parent], filename)
897
self._limbo_children[parent].add(trans_id)
898
self._limbo_children_names[parent][filename] = trans_id
900
limbo_name = pathjoin(self._limbodir, trans_id)
901
self._needs_rename.add(trans_id)
902
self._limbo_files[trans_id] = limbo_name
905
def _set_executability(self, path, trans_id):
906
"""Set the executability of versioned files """
907
if supports_executable():
908
new_executability = self._new_executability[trans_id]
909
abspath = self._tree.abspath(path)
910
current_mode = os.stat(abspath).st_mode
911
if new_executability:
914
to_mode = current_mode | (0100 & ~umask)
915
# Enable x-bit for others only if they can read it.
916
if current_mode & 0004:
917
to_mode |= 0001 & ~umask
918
if current_mode & 0040:
919
to_mode |= 0010 & ~umask
921
to_mode = current_mode & ~0111
922
os.chmod(abspath, to_mode)
924
def _new_entry(self, name, parent_id, file_id):
925
"""Helper function to create a new filesystem entry."""
926
trans_id = self.create_path(name, parent_id)
927
if file_id is not None:
928
self.version_file(file_id, trans_id)
931
def new_file(self, name, parent_id, contents, file_id=None,
933
"""Convenience method to create files.
935
name is the name of the file to create.
936
parent_id is the transaction id of the parent directory of the file.
937
contents is an iterator of bytestrings, which will be used to produce
939
:param file_id: The inventory ID of the file, if it is to be versioned.
940
:param executable: Only valid when a file_id has been supplied.
942
trans_id = self._new_entry(name, parent_id, file_id)
943
# TODO: rather than scheduling a set_executable call,
944
# have create_file create the file with the right mode.
945
self.create_file(contents, trans_id)
946
if executable is not None:
947
self.set_executability(executable, trans_id)
950
def new_directory(self, name, parent_id, file_id=None):
951
"""Convenience method to create directories.
953
name is the name of the directory to create.
954
parent_id is the transaction id of the parent directory of the
956
file_id is the inventory ID of the directory, if it is to be versioned.
958
trans_id = self._new_entry(name, parent_id, file_id)
959
self.create_directory(trans_id)
962
def new_symlink(self, name, parent_id, target, file_id=None):
963
"""Convenience method to create symbolic link.
965
name is the name of the symlink to create.
966
parent_id is the transaction id of the parent directory of the symlink.
967
target is a bytestring of the target of the symlink.
968
file_id is the inventory ID of the file, if it is to be versioned.
970
trans_id = self._new_entry(name, parent_id, file_id)
971
self.create_symlink(target, trans_id)
974
def _affected_ids(self):
975
"""Return the set of transform ids affected by the transform"""
976
trans_ids = set(self._removed_id)
977
trans_ids.update(self._new_id.keys())
978
trans_ids.update(self._removed_contents)
979
trans_ids.update(self._new_contents.keys())
980
trans_ids.update(self._new_executability.keys())
981
trans_ids.update(self._new_name.keys())
982
trans_ids.update(self._new_parent.keys())
985
def _get_file_id_maps(self):
986
"""Return mapping of file_ids to trans_ids in the to and from states"""
987
trans_ids = self._affected_ids()
990
# Build up two dicts: trans_ids associated with file ids in the
991
# FROM state, vs the TO state.
992
for trans_id in trans_ids:
993
from_file_id = self.tree_file_id(trans_id)
994
if from_file_id is not None:
995
from_trans_ids[from_file_id] = trans_id
996
to_file_id = self.final_file_id(trans_id)
997
if to_file_id is not None:
998
to_trans_ids[to_file_id] = trans_id
999
return from_trans_ids, to_trans_ids
1001
def _from_file_data(self, from_trans_id, from_versioned, file_id):
1002
"""Get data about a file in the from (tree) state
1004
Return a (name, parent, kind, executable) tuple
1006
from_path = self._tree_id_paths.get(from_trans_id)
1008
# get data from working tree if versioned
1009
from_entry = self._tree.inventory[file_id]
1010
from_name = from_entry.name
1011
from_parent = from_entry.parent_id
1014
if from_path is None:
1015
# File does not exist in FROM state
1019
# File exists, but is not versioned. Have to use path-
1021
from_name = os.path.basename(from_path)
1022
tree_parent = self.get_tree_parent(from_trans_id)
1023
from_parent = self.tree_file_id(tree_parent)
1024
if from_path is not None:
1025
from_kind, from_executable, from_stats = \
1026
self._tree._comparison_data(from_entry, from_path)
1029
from_executable = False
1030
return from_name, from_parent, from_kind, from_executable
1032
def _to_file_data(self, to_trans_id, from_trans_id, from_executable):
1033
"""Get data about a file in the to (target) state
1035
Return a (name, parent, kind, executable) tuple
1037
to_name = self.final_name(to_trans_id)
1039
to_kind = self.final_kind(to_trans_id)
1042
to_parent = self.final_file_id(self.final_parent(to_trans_id))
1043
if to_trans_id in self._new_executability:
1044
to_executable = self._new_executability[to_trans_id]
1045
elif to_trans_id == from_trans_id:
1046
to_executable = from_executable
1048
to_executable = False
1049
return to_name, to_parent, to_kind, to_executable
1051
def iter_changes(self):
1052
"""Produce output in the same format as Tree.iter_changes.
1054
Will produce nonsensical results if invoked while inventory/filesystem
1055
conflicts (as reported by TreeTransform.find_conflicts()) are present.
1057
This reads the Transform, but only reproduces changes involving a
1058
file_id. Files that are not versioned in either of the FROM or TO
1059
states are not reflected.
1061
final_paths = FinalPaths(self)
1062
from_trans_ids, to_trans_ids = self._get_file_id_maps()
1064
# Now iterate through all active file_ids
1065
for file_id in set(from_trans_ids.keys() + to_trans_ids.keys()):
1067
from_trans_id = from_trans_ids.get(file_id)
1068
# find file ids, and determine versioning state
1069
if from_trans_id is None:
1070
from_versioned = False
1071
from_trans_id = to_trans_ids[file_id]
1073
from_versioned = True
1074
to_trans_id = to_trans_ids.get(file_id)
1075
if to_trans_id is None:
1076
to_versioned = False
1077
to_trans_id = from_trans_id
1081
from_name, from_parent, from_kind, from_executable = \
1082
self._from_file_data(from_trans_id, from_versioned, file_id)
1084
to_name, to_parent, to_kind, to_executable = \
1085
self._to_file_data(to_trans_id, from_trans_id, from_executable)
1087
if not from_versioned:
1090
from_path = self._tree_id_paths.get(from_trans_id)
1091
if not to_versioned:
1094
to_path = final_paths.get_path(to_trans_id)
1095
if from_kind != to_kind:
1097
elif to_kind in ('file', 'symlink') and (
1098
to_trans_id != from_trans_id or
1099
to_trans_id in self._new_contents):
1101
if (not modified and from_versioned == to_versioned and
1102
from_parent==to_parent and from_name == to_name and
1103
from_executable == to_executable):
1105
results.append((file_id, (from_path, to_path), modified,
1106
(from_versioned, to_versioned),
1107
(from_parent, to_parent),
1108
(from_name, to_name),
1109
(from_kind, to_kind),
1110
(from_executable, to_executable)))
1111
return iter(sorted(results, key=lambda x:x[1]))
1113
def get_preview_tree(self):
1114
"""Return a tree representing the result of the transform.
1116
This tree only supports the subset of Tree functionality required
1117
by show_diff_trees. It must only be compared to tt._tree.
1119
return _PreviewTree(self)
1122
class TreeTransform(TreeTransformBase):
1123
"""Represent a tree transformation.
1125
This object is designed to support incremental generation of the transform,
1128
However, it gives optimum performance when parent directories are created
1129
before their contents. The transform is then able to put child files
1130
directly in their parent directory, avoiding later renames.
1132
It is easy to produce malformed transforms, but they are generally
1133
harmless. Attempting to apply a malformed transform will cause an
1134
exception to be raised before any modifications are made to the tree.
1136
Many kinds of malformed transforms can be corrected with the
1137
resolve_conflicts function. The remaining ones indicate programming error,
1138
such as trying to create a file with no path.
1140
Two sets of file creation methods are supplied. Convenience methods are:
1145
These are composed of the low-level methods:
1147
* create_file or create_directory or create_symlink
1151
Transform/Transaction ids
1152
-------------------------
1153
trans_ids are temporary ids assigned to all files involved in a transform.
1154
It's possible, even common, that not all files in the Tree have trans_ids.
1156
trans_ids are used because filenames and file_ids are not good enough
1157
identifiers; filenames change, and not all files have file_ids. File-ids
1158
are also associated with trans-ids, so that moving a file moves its
1161
trans_ids are only valid for the TreeTransform that generated them.
1165
Limbo is a temporary directory use to hold new versions of files.
1166
Files are added to limbo by create_file, create_directory, create_symlink,
1167
and their convenience variants (new_*). Files may be removed from limbo
1168
using cancel_creation. Files are renamed from limbo into their final
1169
location as part of TreeTransform.apply
1171
Limbo must be cleaned up, by either calling TreeTransform.apply or
1172
calling TreeTransform.finalize.
1174
Files are placed into limbo inside their parent directories, where
1175
possible. This reduces subsequent renames, and makes operations involving
1176
lots of files faster. This optimization is only possible if the parent
1177
directory is created *before* creating any of its children, so avoid
1178
creating children before parents, where possible.
1182
This temporary directory is used by _FileMover for storing files that are
1183
about to be deleted. In case of rollback, the files will be restored.
1184
FileMover does not delete files until it is sure that a rollback will not
1187
def __init__(self, tree, pb=DummyProgress()):
1188
"""Note: a tree_write lock is taken on the tree.
1190
Use TreeTransform.finalize() to release the lock (can be omitted if
1191
TreeTransform.apply() called).
1193
tree.lock_tree_write()
1196
limbodir = urlutils.local_path_from_url(
1197
tree._transport.abspath('limbo'))
1201
if e.errno == errno.EEXIST:
1202
raise ExistingLimbo(limbodir)
1203
deletiondir = urlutils.local_path_from_url(
1204
tree._transport.abspath('pending-deletion'))
1206
os.mkdir(deletiondir)
1208
if e.errno == errno.EEXIST:
1209
raise errors.ExistingPendingDeletion(deletiondir)
1214
TreeTransformBase.__init__(self, tree, limbodir, pb,
1215
tree.case_sensitive)
1216
self._deletiondir = deletiondir
1218
def apply(self, no_conflicts=False, precomputed_delta=None, _mover=None):
1219
"""Apply all changes to the inventory and filesystem.
1221
If filesystem or inventory conflicts are present, MalformedTransform
1224
If apply succeeds, finalize is not necessary.
1226
:param no_conflicts: if True, the caller guarantees there are no
1227
conflicts, so no check is made.
1228
:param precomputed_delta: An inventory delta to use instead of
1230
:param _mover: Supply an alternate FileMover, for testing
1232
if not no_conflicts:
1233
conflicts = self.find_conflicts()
1234
if len(conflicts) != 0:
1235
raise MalformedTransform(conflicts=conflicts)
1236
child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
1238
if precomputed_delta is None:
1239
child_pb.update('Apply phase', 0, 2)
1240
inventory_delta = self._generate_inventory_delta()
1243
inventory_delta = precomputed_delta
1246
mover = _FileMover()
1250
child_pb.update('Apply phase', 0 + offset, 2 + offset)
1251
self._apply_removals(mover)
1252
child_pb.update('Apply phase', 1 + offset, 2 + offset)
1253
modified_paths = self._apply_insertions(mover)
1258
mover.apply_deletions()
1261
self._tree.apply_inventory_delta(inventory_delta)
1264
return _TransformResults(modified_paths, self.rename_count)
1266
def _generate_inventory_delta(self):
1267
"""Generate an inventory delta for the current transform."""
1268
inventory_delta = []
1269
child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
1270
new_paths = self._inventory_altered()
1271
total_entries = len(new_paths) + len(self._removed_id)
1273
for num, trans_id in enumerate(self._removed_id):
1275
child_pb.update('removing file', num, total_entries)
1276
if trans_id == self._new_root:
1277
file_id = self._tree.get_root_id()
1279
file_id = self.tree_file_id(trans_id)
1280
# File-id isn't really being deleted, just moved
1281
if file_id in self._r_new_id:
1283
path = self._tree_id_paths[trans_id]
1284
inventory_delta.append((path, None, file_id, None))
1285
new_path_file_ids = dict((t, self.final_file_id(t)) for p, t in
1287
entries = self._tree.iter_entries_by_dir(
1288
new_path_file_ids.values())
1289
old_paths = dict((e.file_id, p) for p, e in entries)
1291
for num, (path, trans_id) in enumerate(new_paths):
1293
child_pb.update('adding file',
1294
num + len(self._removed_id), total_entries)
1295
file_id = new_path_file_ids[trans_id]
1300
kind = self.final_kind(trans_id)
1302
kind = self._tree.stored_kind(file_id)
1303
parent_trans_id = self.final_parent(trans_id)
1304
parent_file_id = new_path_file_ids.get(parent_trans_id)
1305
if parent_file_id is None:
1306
parent_file_id = self.final_file_id(parent_trans_id)
1307
if trans_id in self._new_reference_revision:
1308
new_entry = inventory.TreeReference(
1310
self._new_name[trans_id],
1311
self.final_file_id(self._new_parent[trans_id]),
1312
None, self._new_reference_revision[trans_id])
1314
new_entry = inventory.make_entry(kind,
1315
self.final_name(trans_id),
1316
parent_file_id, file_id)
1317
old_path = old_paths.get(new_entry.file_id)
1318
new_executability = self._new_executability.get(trans_id)
1319
if new_executability is not None:
1320
new_entry.executable = new_executability
1321
inventory_delta.append(
1322
(old_path, path, new_entry.file_id, new_entry))
1325
return inventory_delta
1327
def _apply_removals(self, mover):
1328
"""Perform tree operations that remove directory/inventory names.
1330
That is, delete files that are to be deleted, and put any files that
1331
need renaming into limbo. This must be done in strict child-to-parent
1334
If inventory_delta is None, no inventory delta generation is performed.
1336
tree_paths = list(self._tree_path_ids.iteritems())
1337
tree_paths.sort(reverse=True)
1338
child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
1340
for num, data in enumerate(tree_paths):
1341
path, trans_id = data
1342
child_pb.update('removing file', num, len(tree_paths))
1343
full_path = self._tree.abspath(path)
1344
if trans_id in self._removed_contents:
1345
mover.pre_delete(full_path, os.path.join(self._deletiondir,
1347
elif trans_id in self._new_name or trans_id in \
1350
mover.rename(full_path, self._limbo_name(trans_id))
1352
if e.errno != errno.ENOENT:
1355
self.rename_count += 1
1359
def _apply_insertions(self, mover):
1360
"""Perform tree operations that insert directory/inventory names.
1362
That is, create any files that need to be created, and restore from
1363
limbo any files that needed renaming. This must be done in strict
1364
parent-to-child order.
1366
If inventory_delta is None, no inventory delta is calculated, and
1367
no list of modified paths is returned.
1369
new_paths = self.new_paths(filesystem_only=True)
1371
new_path_file_ids = dict((t, self.final_file_id(t)) for p, t in
1373
child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
1375
for num, (path, trans_id) in enumerate(new_paths):
1377
child_pb.update('adding file', num, len(new_paths))
1378
full_path = self._tree.abspath(path)
1379
if trans_id in self._needs_rename:
1381
mover.rename(self._limbo_name(trans_id), full_path)
1383
# We may be renaming a dangling inventory id
1384
if e.errno != errno.ENOENT:
1387
self.rename_count += 1
1388
if (trans_id in self._new_contents or
1389
self.path_changed(trans_id)):
1390
if trans_id in self._new_contents:
1391
modified_paths.append(full_path)
1392
if trans_id in self._new_executability:
1393
self._set_executability(path, trans_id)
1396
self._new_contents.clear()
1397
return modified_paths
1400
class TransformPreview(TreeTransformBase):
1401
"""A TreeTransform for generating preview trees.
1403
Unlike TreeTransform, this version works when the input tree is a
1404
RevisionTree, rather than a WorkingTree. As a result, it tends to ignore
1405
unversioned files in the input tree.
1408
def __init__(self, tree, pb=DummyProgress(), case_sensitive=True):
1410
limbodir = osutils.mkdtemp(prefix='bzr-limbo-')
1411
TreeTransformBase.__init__(self, tree, limbodir, pb, case_sensitive)
1413
def canonical_path(self, path):
1416
def tree_kind(self, trans_id):
1417
path = self._tree_id_paths.get(trans_id)
1419
raise NoSuchFile(None)
1420
file_id = self._tree.path2id(path)
1421
return self._tree.kind(file_id)
1423
def _set_mode(self, trans_id, mode_id, typefunc):
1424
"""Set the mode of new file contents.
1425
The mode_id is the existing file to get the mode from (often the same
1426
as trans_id). The operation is only performed if there's a mode match
1427
according to typefunc.
1429
# is it ok to ignore this? probably
1432
def iter_tree_children(self, parent_id):
1433
"""Iterate through the entry's tree children, if any"""
1435
path = self._tree_id_paths[parent_id]
1438
file_id = self.tree_file_id(parent_id)
1441
children = getattr(self._tree.inventory[file_id], 'children', {})
1442
for child in children:
1443
childpath = joinpath(path, child)
1444
yield self.trans_id_tree_path(childpath)
1447
class _PreviewTree(tree.Tree):
1448
"""Partial implementation of Tree to support show_diff_trees"""
1450
def __init__(self, transform):
1451
self._transform = transform
1452
self._final_paths = FinalPaths(transform)
1453
self.__by_parent = None
1454
self._parent_ids = []
1456
def _changes(self, file_id):
1457
for changes in self._transform.iter_changes():
1458
if changes[0] == file_id:
1461
def _content_change(self, file_id):
1462
"""Return True if the content of this file changed"""
1463
changes = self._changes(file_id)
1464
# changes[2] is true if the file content changed. See
1465
# InterTree.iter_changes.
1466
return (changes is not None and changes[2])
1468
def _get_repository(self):
1469
repo = getattr(self._transform._tree, '_repository', None)
1471
repo = self._transform._tree.branch.repository
1474
def _iter_parent_trees(self):
1475
for revision_id in self.get_parent_ids():
1477
yield self.revision_tree(revision_id)
1478
except errors.NoSuchRevisionInTree:
1479
yield self._get_repository().revision_tree(revision_id)
1481
def _get_file_revision(self, file_id, vf, tree_revision):
1482
parent_keys = [(file_id, self._file_revision(t, file_id)) for t in
1483
self._iter_parent_trees()]
1484
vf.add_lines((file_id, tree_revision), parent_keys,
1485
self.get_file(file_id).readlines())
1486
repo = self._get_repository()
1487
base_vf = repo.texts
1488
if base_vf not in vf.fallback_versionedfiles:
1489
vf.fallback_versionedfiles.append(base_vf)
1490
return tree_revision
1492
def _stat_limbo_file(self, file_id):
1493
trans_id = self._transform.trans_id_file_id(file_id)
1494
name = self._transform._limbo_name(trans_id)
1495
return os.lstat(name)
1498
def _by_parent(self):
1499
if self.__by_parent is None:
1500
self.__by_parent = self._transform.by_parent()
1501
return self.__by_parent
1503
def lock_read(self):
1504
# Perhaps in theory, this should lock the TreeTransform?
1511
def inventory(self):
1512
"""This Tree does not use inventory as its backing data."""
1513
raise NotImplementedError(_PreviewTree.inventory)
1515
def get_root_id(self):
1516
return self._transform.final_file_id(self._transform.root)
1518
def all_file_ids(self):
1519
tree_ids = set(self._transform._tree.all_file_ids())
1520
tree_ids.difference_update(self._transform.tree_file_id(t)
1521
for t in self._transform._removed_id)
1522
tree_ids.update(self._transform._new_id.values())
1526
return iter(self.all_file_ids())
1528
def has_id(self, file_id):
1529
if file_id in self._transform._r_new_id:
1531
elif file_id in self._transform._removed_id:
1534
return self._transform._tree.has_id(file_id)
1536
def _path2trans_id(self, path):
1537
segments = splitpath(path)
1538
cur_parent = self._transform.root
1539
for cur_segment in segments:
1540
for child in self._all_children(cur_parent):
1541
if self._transform.final_name(child) == cur_segment:
1548
def path2id(self, path):
1549
return self._transform.final_file_id(self._path2trans_id(path))
1551
def id2path(self, file_id):
1552
trans_id = self._transform.trans_id_file_id(file_id)
1554
return self._final_paths._determine_path(trans_id)
1556
raise errors.NoSuchId(self, file_id)
1558
def _all_children(self, trans_id):
1559
children = set(self._transform.iter_tree_children(trans_id))
1560
# children in the _new_parent set are provided by _by_parent.
1561
children.difference_update(self._transform._new_parent.keys())
1562
children.update(self._by_parent.get(trans_id, []))
1565
def iter_children(self, file_id):
1566
trans_id = self._transform.trans_id_file_id(file_id)
1567
for child_trans_id in self._all_children(trans_id):
1568
yield self._transform.final_file_id(child_trans_id)
1570
def _make_inv_entries(self, ordered_entries, specific_file_ids):
1571
for trans_id, parent_file_id in ordered_entries:
1572
file_id = self._transform.final_file_id(trans_id)
1575
if (specific_file_ids is not None
1576
and file_id not in specific_file_ids):
1579
kind = self._transform.final_kind(trans_id)
1581
kind = self._transform._tree.stored_kind(file_id)
1582
new_entry = inventory.make_entry(
1584
self._transform.final_name(trans_id),
1585
parent_file_id, file_id)
1586
yield new_entry, trans_id
1588
def _list_files_by_dir(self):
1589
todo = [ROOT_PARENT]
1591
while len(todo) > 0:
1593
parent_file_id = self._transform.final_file_id(parent)
1594
children = list(self._all_children(parent))
1595
paths = dict(zip(children, self._final_paths.get_paths(children)))
1596
children.sort(key=paths.get)
1597
todo.extend(reversed(children))
1598
for trans_id in children:
1599
ordered_ids.append((trans_id, parent_file_id))
1602
def iter_entries_by_dir(self, specific_file_ids=None):
1603
# This may not be a maximally efficient implementation, but it is
1604
# reasonably straightforward. An implementation that grafts the
1605
# TreeTransform changes onto the tree's iter_entries_by_dir results
1606
# might be more efficient, but requires tricky inferences about stack
1608
ordered_ids = self._list_files_by_dir()
1609
for entry, trans_id in self._make_inv_entries(ordered_ids,
1611
yield unicode(self._final_paths.get_path(trans_id)), entry
1613
def list_files(self, include_root=False):
1614
"""See Tree.list_files."""
1615
# XXX This should behave like WorkingTree.list_files, but is really
1616
# more like RevisionTree.list_files.
1617
for path, entry in self.iter_entries_by_dir():
1618
if entry.name == '' and not include_root:
1620
yield path, 'V', entry.kind, entry.file_id, entry
1622
def kind(self, file_id):
1623
trans_id = self._transform.trans_id_file_id(file_id)
1624
return self._transform.final_kind(trans_id)
1626
def stored_kind(self, file_id):
1627
trans_id = self._transform.trans_id_file_id(file_id)
1629
return self._transform._new_contents[trans_id]
1631
return self._transform._tree.stored_kind(file_id)
1633
def get_file_mtime(self, file_id, path=None):
1634
"""See Tree.get_file_mtime"""
1635
if not self._content_change(file_id):
1636
return self._transform._tree.get_file_mtime(file_id, path)
1637
return self._stat_limbo_file(file_id).st_mtime
1639
def get_file_size(self, file_id):
1640
"""See Tree.get_file_size"""
1641
if self.kind(file_id) == 'file':
1642
return self._transform._tree.get_file_size(file_id)
1646
def get_file_sha1(self, file_id, path=None, stat_value=None):
1647
return self._transform._tree.get_file_sha1(file_id)
1649
def is_executable(self, file_id, path=None):
1650
trans_id = self._transform.trans_id_file_id(file_id)
1652
return self._transform._new_executability[trans_id]
1654
return self._transform._tree.is_executable(file_id, path)
1656
def path_content_summary(self, path):
1657
trans_id = self._path2trans_id(path)
1658
tt = self._transform
1659
tree_path = tt._tree_id_paths.get(trans_id)
1660
kind = tt._new_contents.get(trans_id)
1662
if tree_path is None or trans_id in tt._removed_contents:
1663
return 'missing', None, None, None
1664
summary = tt._tree.path_content_summary(tree_path)
1665
kind, size, executable, link_or_sha1 = summary
1668
limbo_name = tt._limbo_name(trans_id)
1669
if trans_id in tt._new_reference_revision:
1670
kind = 'tree-reference'
1672
statval = os.lstat(limbo_name)
1673
size = statval.st_size
1674
if not supports_executable():
1677
executable = statval.st_mode & S_IEXEC
1681
if kind == 'symlink':
1682
link_or_sha1 = os.readlink(limbo_name)
1683
if supports_executable():
1684
executable = tt._new_executability.get(trans_id, executable)
1685
return kind, size, executable, link_or_sha1
1687
def iter_changes(self, from_tree, include_unchanged=False,
1688
specific_files=None, pb=None, extra_trees=None,
1689
require_versioned=True, want_unversioned=False):
1690
"""See InterTree.iter_changes.
1692
This implementation does not support include_unchanged, specific_files,
1693
or want_unversioned. extra_trees, require_versioned, and pb are
1696
if from_tree is not self._transform._tree:
1697
raise ValueError('from_tree must be transform source tree.')
1698
if include_unchanged:
1699
raise ValueError('include_unchanged is not supported')
1700
if specific_files is not None:
1701
raise ValueError('specific_files is not supported')
1702
if want_unversioned:
1703
raise ValueError('want_unversioned is not supported')
1704
return self._transform.iter_changes()
1706
def get_file(self, file_id, path=None):
1707
"""See Tree.get_file"""
1708
if not self._content_change(file_id):
1709
return self._transform._tree.get_file(file_id, path)
1710
trans_id = self._transform.trans_id_file_id(file_id)
1711
name = self._transform._limbo_name(trans_id)
1712
return open(name, 'rb')
1714
def get_file_text(self, file_id):
1715
text_file = self.get_file(file_id)
1717
return text_file.read()
1721
def annotate_iter(self, file_id,
1722
default_revision=_mod_revision.CURRENT_REVISION):
1723
changes = self._changes(file_id)
1727
changed_content, versioned, kind = (changes[2], changes[3],
1731
get_old = (kind[0] == 'file' and versioned[0])
1733
old_annotation = self._transform._tree.annotate_iter(file_id,
1734
default_revision=default_revision)
1738
return old_annotation
1739
if not changed_content:
1740
return old_annotation
1741
return annotate.reannotate([old_annotation],
1742
self.get_file(file_id).readlines(),
1745
def get_symlink_target(self, file_id):
1746
"""See Tree.get_symlink_target"""
1747
if not self._content_change(file_id):
1748
return self._transform._tree.get_symlink_target(file_id)
1749
trans_id = self._transform.trans_id_file_id(file_id)
1750
name = self._transform._limbo_name(trans_id)
1751
return os.readlink(name)
1753
def walkdirs(self, prefix=''):
1754
pending = [self._transform.root]
1755
while len(pending) > 0:
1756
parent_id = pending.pop()
1759
prefix = prefix.rstrip('/')
1760
parent_path = self._final_paths.get_path(parent_id)
1761
parent_file_id = self._transform.final_file_id(parent_id)
1762
for child_id in self._all_children(parent_id):
1763
path_from_root = self._final_paths.get_path(child_id)
1764
basename = self._transform.final_name(child_id)
1765
file_id = self._transform.final_file_id(child_id)
1767
kind = self._transform.final_kind(child_id)
1768
versioned_kind = kind
1771
versioned_kind = self._transform._tree.stored_kind(file_id)
1772
if versioned_kind == 'directory':
1773
subdirs.append(child_id)
1774
children.append((path_from_root, basename, kind, None,
1775
file_id, versioned_kind))
1777
if parent_path.startswith(prefix):
1778
yield (parent_path, parent_file_id), children
1779
pending.extend(sorted(subdirs, key=self._final_paths.get_path,
1782
def get_parent_ids(self):
1783
return self._parent_ids
1785
def set_parent_ids(self, parent_ids):
1786
self._parent_ids = parent_ids
1788
def get_revision_tree(self, revision_id):
1789
return self._transform._tree.get_revision_tree(revision_id)
1792
def joinpath(parent, child):
1793
"""Join tree-relative paths, handling the tree root specially"""
1794
if parent is None or parent == "":
1797
return pathjoin(parent, child)
1800
class FinalPaths(object):
1801
"""Make path calculation cheap by memoizing paths.
1803
The underlying tree must not be manipulated between calls, or else
1804
the results will likely be incorrect.
1806
def __init__(self, transform):
1807
object.__init__(self)
1808
self._known_paths = {}
1809
self.transform = transform
1811
def _determine_path(self, trans_id):
1812
if trans_id == self.transform.root:
1814
name = self.transform.final_name(trans_id)
1815
parent_id = self.transform.final_parent(trans_id)
1816
if parent_id == self.transform.root:
1819
return pathjoin(self.get_path(parent_id), name)
1821
def get_path(self, trans_id):
1822
"""Find the final path associated with a trans_id"""
1823
if trans_id not in self._known_paths:
1824
self._known_paths[trans_id] = self._determine_path(trans_id)
1825
return self._known_paths[trans_id]
1827
def get_paths(self, trans_ids):
1828
return [(self.get_path(t), t) for t in trans_ids]
1832
def topology_sorted_ids(tree):
1833
"""Determine the topological order of the ids in a tree"""
1834
file_ids = list(tree)
1835
file_ids.sort(key=tree.id2path)
1839
def build_tree(tree, wt, accelerator_tree=None, hardlink=False,
1840
delta_from_tree=False):
1841
"""Create working tree for a branch, using a TreeTransform.
1843
This function should be used on empty trees, having a tree root at most.
1844
(see merge and revert functionality for working with existing trees)
1846
Existing files are handled like so:
1848
- Existing bzrdirs take precedence over creating new items. They are
1849
created as '%s.diverted' % name.
1850
- Otherwise, if the content on disk matches the content we are building,
1851
it is silently replaced.
1852
- Otherwise, conflict resolution will move the old file to 'oldname.moved'.
1854
:param tree: The tree to convert wt into a copy of
1855
:param wt: The working tree that files will be placed into
1856
:param accelerator_tree: A tree which can be used for retrieving file
1857
contents more quickly than tree itself, i.e. a workingtree. tree
1858
will be used for cases where accelerator_tree's content is different.
1859
:param hardlink: If true, hard-link files to accelerator_tree, where
1860
possible. accelerator_tree must implement abspath, i.e. be a
1862
:param delta_from_tree: If true, build_tree may use the input Tree to
1863
generate the inventory delta.
1865
wt.lock_tree_write()
1869
if accelerator_tree is not None:
1870
accelerator_tree.lock_read()
1872
return _build_tree(tree, wt, accelerator_tree, hardlink,
1875
if accelerator_tree is not None:
1876
accelerator_tree.unlock()
1883
def _build_tree(tree, wt, accelerator_tree, hardlink, delta_from_tree):
1884
"""See build_tree."""
1885
for num, _unused in enumerate(wt.all_file_ids()):
1886
if num > 0: # more than just a root
1887
raise errors.WorkingTreeAlreadyPopulated(base=wt.basedir)
1888
existing_files = set()
1889
for dir, files in wt.walkdirs():
1890
existing_files.update(f[0] for f in files)
1892
top_pb = bzrlib.ui.ui_factory.nested_progress_bar()
1893
pp = ProgressPhase("Build phase", 2, top_pb)
1894
if tree.inventory.root is not None:
1895
# This is kind of a hack: we should be altering the root
1896
# as part of the regular tree shape diff logic.
1897
# The conditional test here is to avoid doing an
1898
# expensive operation (flush) every time the root id
1899
# is set within the tree, nor setting the root and thus
1900
# marking the tree as dirty, because we use two different
1901
# idioms here: tree interfaces and inventory interfaces.
1902
if wt.get_root_id() != tree.get_root_id():
1903
wt.set_root_id(tree.get_root_id())
1905
tt = TreeTransform(wt)
1909
file_trans_id[wt.get_root_id()] = \
1910
tt.trans_id_tree_file_id(wt.get_root_id())
1911
pb = bzrlib.ui.ui_factory.nested_progress_bar()
1913
deferred_contents = []
1915
total = len(tree.inventory)
1917
precomputed_delta = []
1919
precomputed_delta = None
1920
for num, (tree_path, entry) in \
1921
enumerate(tree.inventory.iter_entries_by_dir()):
1922
pb.update("Building tree", num - len(deferred_contents), total)
1923
if entry.parent_id is None:
1926
file_id = entry.file_id
1928
precomputed_delta.append((None, tree_path, file_id, entry))
1929
if tree_path in existing_files:
1930
target_path = wt.abspath(tree_path)
1931
kind = file_kind(target_path)
1932
if kind == "directory":
1934
bzrdir.BzrDir.open(target_path)
1935
except errors.NotBranchError:
1939
if (file_id not in divert and
1940
_content_match(tree, entry, file_id, kind,
1942
tt.delete_contents(tt.trans_id_tree_path(tree_path))
1943
if kind == 'directory':
1945
parent_id = file_trans_id[entry.parent_id]
1946
if entry.kind == 'file':
1947
# We *almost* replicate new_by_entry, so that we can defer
1948
# getting the file text, and get them all at once.
1949
trans_id = tt.create_path(entry.name, parent_id)
1950
file_trans_id[file_id] = trans_id
1951
tt.version_file(file_id, trans_id)
1952
executable = tree.is_executable(file_id, tree_path)
1954
tt.set_executability(executable, trans_id)
1955
deferred_contents.append((file_id, trans_id))
1957
file_trans_id[file_id] = new_by_entry(tt, entry, parent_id,
1960
new_trans_id = file_trans_id[file_id]
1961
old_parent = tt.trans_id_tree_path(tree_path)
1962
_reparent_children(tt, old_parent, new_trans_id)
1963
offset = num + 1 - len(deferred_contents)
1964
_create_files(tt, tree, deferred_contents, pb, offset,
1965
accelerator_tree, hardlink)
1969
divert_trans = set(file_trans_id[f] for f in divert)
1970
resolver = lambda t, c: resolve_checkout(t, c, divert_trans)
1971
raw_conflicts = resolve_conflicts(tt, pass_func=resolver)
1972
if len(raw_conflicts) > 0:
1973
precomputed_delta = None
1974
conflicts = cook_conflicts(raw_conflicts, tt)
1975
for conflict in conflicts:
1978
wt.add_conflicts(conflicts)
1979
except errors.UnsupportedOperation:
1981
result = tt.apply(no_conflicts=True,
1982
precomputed_delta=precomputed_delta)
1989
def _create_files(tt, tree, desired_files, pb, offset, accelerator_tree,
1991
total = len(desired_files) + offset
1992
if accelerator_tree is None:
1993
new_desired_files = desired_files
1995
iter = accelerator_tree.iter_changes(tree, include_unchanged=True)
1996
unchanged = dict((f, p[1]) for (f, p, c, v, d, n, k, e)
1997
in iter if not (c or e[0] != e[1]))
1998
new_desired_files = []
2000
for file_id, trans_id in desired_files:
2001
accelerator_path = unchanged.get(file_id)
2002
if accelerator_path is None:
2003
new_desired_files.append((file_id, trans_id))
2005
pb.update('Adding file contents', count + offset, total)
2007
tt.create_hardlink(accelerator_tree.abspath(accelerator_path),
2010
contents = accelerator_tree.get_file(file_id, accelerator_path)
2012
tt.create_file(contents, trans_id)
2017
for count, (trans_id, contents) in enumerate(tree.iter_files_bytes(
2018
new_desired_files)):
2019
tt.create_file(contents, trans_id)
2020
pb.update('Adding file contents', count + offset, total)
2023
def _reparent_children(tt, old_parent, new_parent):
2024
for child in tt.iter_tree_children(old_parent):
2025
tt.adjust_path(tt.final_name(child), new_parent, child)
2027
def _reparent_transform_children(tt, old_parent, new_parent):
2028
by_parent = tt.by_parent()
2029
for child in by_parent[old_parent]:
2030
tt.adjust_path(tt.final_name(child), new_parent, child)
2031
return by_parent[old_parent]
2033
def _content_match(tree, entry, file_id, kind, target_path):
2034
if entry.kind != kind:
2036
if entry.kind == "directory":
2038
if entry.kind == "file":
2039
if tree.get_file(file_id).read() == file(target_path, 'rb').read():
2041
elif entry.kind == "symlink":
2042
if tree.get_symlink_target(file_id) == os.readlink(target_path):
2047
def resolve_checkout(tt, conflicts, divert):
2048
new_conflicts = set()
2049
for c_type, conflict in ((c[0], c) for c in conflicts):
2050
# Anything but a 'duplicate' would indicate programmer error
2051
if c_type != 'duplicate':
2052
raise AssertionError(c_type)
2053
# Now figure out which is new and which is old
2054
if tt.new_contents(conflict[1]):
2055
new_file = conflict[1]
2056
old_file = conflict[2]
2058
new_file = conflict[2]
2059
old_file = conflict[1]
2061
# We should only get here if the conflict wasn't completely
2063
final_parent = tt.final_parent(old_file)
2064
if new_file in divert:
2065
new_name = tt.final_name(old_file)+'.diverted'
2066
tt.adjust_path(new_name, final_parent, new_file)
2067
new_conflicts.add((c_type, 'Diverted to',
2068
new_file, old_file))
2070
new_name = tt.final_name(old_file)+'.moved'
2071
tt.adjust_path(new_name, final_parent, old_file)
2072
new_conflicts.add((c_type, 'Moved existing file to',
2073
old_file, new_file))
2074
return new_conflicts
2077
def new_by_entry(tt, entry, parent_id, tree):
2078
"""Create a new file according to its inventory entry"""
2082
contents = tree.get_file(entry.file_id).readlines()
2083
executable = tree.is_executable(entry.file_id)
2084
return tt.new_file(name, parent_id, contents, entry.file_id,
2086
elif kind in ('directory', 'tree-reference'):
2087
trans_id = tt.new_directory(name, parent_id, entry.file_id)
2088
if kind == 'tree-reference':
2089
tt.set_tree_reference(entry.reference_revision, trans_id)
2091
elif kind == 'symlink':
2092
target = tree.get_symlink_target(entry.file_id)
2093
return tt.new_symlink(name, parent_id, target, entry.file_id)
2095
raise errors.BadFileKindError(name, kind)
2098
def create_by_entry(tt, entry, tree, trans_id, lines=None, mode_id=None):
2099
"""Create new file contents according to an inventory entry."""
2100
if entry.kind == "file":
2102
lines = tree.get_file(entry.file_id).readlines()
2103
tt.create_file(lines, trans_id, mode_id=mode_id)
2104
elif entry.kind == "symlink":
2105
tt.create_symlink(tree.get_symlink_target(entry.file_id), trans_id)
2106
elif entry.kind == "directory":
2107
tt.create_directory(trans_id)
2110
def create_entry_executability(tt, entry, trans_id):
2111
"""Set the executability of a trans_id according to an inventory entry"""
2112
if entry.kind == "file":
2113
tt.set_executability(entry.executable, trans_id)
2116
def get_backup_name(entry, by_parent, parent_trans_id, tt):
2117
return _get_backup_name(entry.name, by_parent, parent_trans_id, tt)
2120
def _get_backup_name(name, by_parent, parent_trans_id, tt):
2121
"""Produce a backup-style name that appears to be available"""
2125
yield "%s.~%d~" % (name, counter)
2127
for new_name in name_gen():
2128
if not tt.has_named_child(by_parent, parent_trans_id, new_name):
2132
def _entry_changes(file_id, entry, working_tree):
2133
"""Determine in which ways the inventory entry has changed.
2135
Returns booleans: has_contents, content_mod, meta_mod
2136
has_contents means there are currently contents, but they differ
2137
contents_mod means contents need to be modified
2138
meta_mod means the metadata needs to be modified
2140
cur_entry = working_tree.inventory[file_id]
2142
working_kind = working_tree.kind(file_id)
2145
has_contents = False
2148
if has_contents is True:
2149
if entry.kind != working_kind:
2150
contents_mod, meta_mod = True, False
2152
cur_entry._read_tree_state(working_tree.id2path(file_id),
2154
contents_mod, meta_mod = entry.detect_changes(cur_entry)
2155
cur_entry._forget_tree_state()
2156
return has_contents, contents_mod, meta_mod
2159
def revert(working_tree, target_tree, filenames, backups=False,
2160
pb=DummyProgress(), change_reporter=None):
2161
"""Revert a working tree's contents to those of a target tree."""
2162
target_tree.lock_read()
2163
tt = TreeTransform(working_tree, pb)
2165
pp = ProgressPhase("Revert phase", 3, pb)
2166
conflicts, merge_modified = _prepare_revert_transform(
2167
working_tree, target_tree, tt, filenames, backups, pp)
2169
change_reporter = delta._ChangeReporter(
2170
unversioned_filter=working_tree.is_ignored)
2171
delta.report_changes(tt.iter_changes(), change_reporter)
2172
for conflict in conflicts:
2176
working_tree.set_merge_modified(merge_modified)
2178
target_tree.unlock()
2184
def _prepare_revert_transform(working_tree, target_tree, tt, filenames,
2185
backups, pp, basis_tree=None,
2186
merge_modified=None):
2188
child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
2190
if merge_modified is None:
2191
merge_modified = working_tree.merge_modified()
2192
merge_modified = _alter_files(working_tree, target_tree, tt,
2193
child_pb, filenames, backups,
2194
merge_modified, basis_tree)
2198
child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
2200
raw_conflicts = resolve_conflicts(tt, child_pb,
2201
lambda t, c: conflict_pass(t, c, target_tree))
2204
conflicts = cook_conflicts(raw_conflicts, tt)
2205
return conflicts, merge_modified
2208
def _alter_files(working_tree, target_tree, tt, pb, specific_files,
2209
backups, merge_modified, basis_tree=None):
2210
if basis_tree is not None:
2211
basis_tree.lock_read()
2212
change_list = target_tree.iter_changes(working_tree,
2213
specific_files=specific_files, pb=pb)
2214
if target_tree.get_root_id() is None:
2220
for id_num, (file_id, path, changed_content, versioned, parent, name,
2221
kind, executable) in enumerate(change_list):
2222
if skip_root and file_id[0] is not None and parent[0] is None:
2224
trans_id = tt.trans_id_file_id(file_id)
2227
keep_content = False
2228
if kind[0] == 'file' and (backups or kind[1] is None):
2229
wt_sha1 = working_tree.get_file_sha1(file_id)
2230
if merge_modified.get(file_id) != wt_sha1:
2231
# acquire the basis tree lazily to prevent the
2232
# expense of accessing it when it's not needed ?
2233
# (Guessing, RBC, 200702)
2234
if basis_tree is None:
2235
basis_tree = working_tree.basis_tree()
2236
basis_tree.lock_read()
2237
if file_id in basis_tree:
2238
if wt_sha1 != basis_tree.get_file_sha1(file_id):
2240
elif kind[1] is None and not versioned[1]:
2242
if kind[0] is not None:
2243
if not keep_content:
2244
tt.delete_contents(trans_id)
2245
elif kind[1] is not None:
2246
parent_trans_id = tt.trans_id_file_id(parent[0])
2247
by_parent = tt.by_parent()
2248
backup_name = _get_backup_name(name[0], by_parent,
2249
parent_trans_id, tt)
2250
tt.adjust_path(backup_name, parent_trans_id, trans_id)
2251
new_trans_id = tt.create_path(name[0], parent_trans_id)
2252
if versioned == (True, True):
2253
tt.unversion_file(trans_id)
2254
tt.version_file(file_id, new_trans_id)
2255
# New contents should have the same unix perms as old
2258
trans_id = new_trans_id
2259
if kind[1] in ('directory', 'tree-reference'):
2260
tt.create_directory(trans_id)
2261
if kind[1] == 'tree-reference':
2262
revision = target_tree.get_reference_revision(file_id,
2264
tt.set_tree_reference(revision, trans_id)
2265
elif kind[1] == 'symlink':
2266
tt.create_symlink(target_tree.get_symlink_target(file_id),
2268
elif kind[1] == 'file':
2269
deferred_files.append((file_id, (trans_id, mode_id)))
2270
if basis_tree is None:
2271
basis_tree = working_tree.basis_tree()
2272
basis_tree.lock_read()
2273
new_sha1 = target_tree.get_file_sha1(file_id)
2274
if (file_id in basis_tree and new_sha1 ==
2275
basis_tree.get_file_sha1(file_id)):
2276
if file_id in merge_modified:
2277
del merge_modified[file_id]
2279
merge_modified[file_id] = new_sha1
2281
# preserve the execute bit when backing up
2282
if keep_content and executable[0] == executable[1]:
2283
tt.set_executability(executable[1], trans_id)
2284
elif kind[1] is not None:
2285
raise AssertionError(kind[1])
2286
if versioned == (False, True):
2287
tt.version_file(file_id, trans_id)
2288
if versioned == (True, False):
2289
tt.unversion_file(trans_id)
2290
if (name[1] is not None and
2291
(name[0] != name[1] or parent[0] != parent[1])):
2292
if name[1] == '' and parent[1] is None:
2293
parent_trans = ROOT_PARENT
2295
parent_trans = tt.trans_id_file_id(parent[1])
2296
tt.adjust_path(name[1], parent_trans, trans_id)
2297
if executable[0] != executable[1] and kind[1] == "file":
2298
tt.set_executability(executable[1], trans_id)
2299
for (trans_id, mode_id), bytes in target_tree.iter_files_bytes(
2301
tt.create_file(bytes, trans_id, mode_id)
2303
if basis_tree is not None:
2305
return merge_modified
2308
def resolve_conflicts(tt, pb=DummyProgress(), pass_func=None):
2309
"""Make many conflict-resolution attempts, but die if they fail"""
2310
if pass_func is None:
2311
pass_func = conflict_pass
2312
new_conflicts = set()
2315
pb.update('Resolution pass', n+1, 10)
2316
conflicts = tt.find_conflicts()
2317
if len(conflicts) == 0:
2318
return new_conflicts
2319
new_conflicts.update(pass_func(tt, conflicts))
2320
raise MalformedTransform(conflicts=conflicts)
2325
def conflict_pass(tt, conflicts, path_tree=None):
2326
"""Resolve some classes of conflicts.
2328
:param tt: The transform to resolve conflicts in
2329
:param conflicts: The conflicts to resolve
2330
:param path_tree: A Tree to get supplemental paths from
2332
new_conflicts = set()
2333
for c_type, conflict in ((c[0], c) for c in conflicts):
2334
if c_type == 'duplicate id':
2335
tt.unversion_file(conflict[1])
2336
new_conflicts.add((c_type, 'Unversioned existing file',
2337
conflict[1], conflict[2], ))
2338
elif c_type == 'duplicate':
2339
# files that were renamed take precedence
2340
final_parent = tt.final_parent(conflict[1])
2341
if tt.path_changed(conflict[1]):
2342
existing_file, new_file = conflict[2], conflict[1]
2344
existing_file, new_file = conflict[1], conflict[2]
2345
new_name = tt.final_name(existing_file)+'.moved'
2346
tt.adjust_path(new_name, final_parent, existing_file)
2347
new_conflicts.add((c_type, 'Moved existing file to',
2348
existing_file, new_file))
2349
elif c_type == 'parent loop':
2350
# break the loop by undoing one of the ops that caused the loop
2352
while not tt.path_changed(cur):
2353
cur = tt.final_parent(cur)
2354
new_conflicts.add((c_type, 'Cancelled move', cur,
2355
tt.final_parent(cur),))
2356
tt.adjust_path(tt.final_name(cur), tt.get_tree_parent(cur), cur)
2358
elif c_type == 'missing parent':
2359
trans_id = conflict[1]
2361
tt.cancel_deletion(trans_id)
2362
new_conflicts.add(('deleting parent', 'Not deleting',
2367
tt.final_name(trans_id)
2369
if path_tree is not None:
2370
file_id = tt.final_file_id(trans_id)
2372
file_id = tt.inactive_file_id(trans_id)
2373
entry = path_tree.inventory[file_id]
2374
# special-case the other tree root (move its
2375
# children to current root)
2376
if entry.parent_id is None:
2378
moved = _reparent_transform_children(
2379
tt, trans_id, tt.root)
2381
new_conflicts.add((c_type, 'Moved to root',
2384
parent_trans_id = tt.trans_id_file_id(
2386
tt.adjust_path(entry.name, parent_trans_id,
2389
tt.create_directory(trans_id)
2390
new_conflicts.add((c_type, 'Created directory', trans_id))
2391
elif c_type == 'unversioned parent':
2392
file_id = tt.inactive_file_id(conflict[1])
2393
# special-case the other tree root (move its children instead)
2394
if path_tree and file_id in path_tree:
2395
if path_tree.inventory[file_id].parent_id is None:
2397
tt.version_file(file_id, conflict[1])
2398
new_conflicts.add((c_type, 'Versioned directory', conflict[1]))
2399
elif c_type == 'non-directory parent':
2400
parent_id = conflict[1]
2401
parent_parent = tt.final_parent(parent_id)
2402
parent_name = tt.final_name(parent_id)
2403
parent_file_id = tt.final_file_id(parent_id)
2404
new_parent_id = tt.new_directory(parent_name + '.new',
2405
parent_parent, parent_file_id)
2406
_reparent_transform_children(tt, parent_id, new_parent_id)
2407
if parent_file_id is not None:
2408
tt.unversion_file(parent_id)
2409
new_conflicts.add((c_type, 'Created directory', new_parent_id))
2410
elif c_type == 'versioning no contents':
2411
tt.cancel_versioning(conflict[1])
2412
return new_conflicts
2415
def cook_conflicts(raw_conflicts, tt):
2416
"""Generate a list of cooked conflicts, sorted by file path"""
2417
from bzrlib.conflicts import Conflict
2418
conflict_iter = iter_cook_conflicts(raw_conflicts, tt)
2419
return sorted(conflict_iter, key=Conflict.sort_key)
2422
def iter_cook_conflicts(raw_conflicts, tt):
2423
from bzrlib.conflicts import Conflict
2425
for conflict in raw_conflicts:
2426
c_type = conflict[0]
2427
action = conflict[1]
2428
modified_path = fp.get_path(conflict[2])
2429
modified_id = tt.final_file_id(conflict[2])
2430
if len(conflict) == 3:
2431
yield Conflict.factory(c_type, action=action, path=modified_path,
2432
file_id=modified_id)
2435
conflicting_path = fp.get_path(conflict[3])
2436
conflicting_id = tt.final_file_id(conflict[3])
2437
yield Conflict.factory(c_type, action=action, path=modified_path,
2438
file_id=modified_id,
2439
conflict_path=conflicting_path,
2440
conflict_file_id=conflicting_id)
2443
class _FileMover(object):
2444
"""Moves and deletes files for TreeTransform, tracking operations"""
2447
self.past_renames = []
2448
self.pending_deletions = []
2450
def rename(self, from_, to):
2451
"""Rename a file from one path to another. Functions like os.rename"""
2453
os.rename(from_, to)
2455
if e.errno in (errno.EEXIST, errno.ENOTEMPTY):
2456
raise errors.FileExists(to, str(e))
2458
self.past_renames.append((from_, to))
2460
def pre_delete(self, from_, to):
2461
"""Rename a file out of the way and mark it for deletion.
2463
Unlike os.unlink, this works equally well for files and directories.
2464
:param from_: The current file path
2465
:param to: A temporary path for the file
2467
self.rename(from_, to)
2468
self.pending_deletions.append(to)
2471
"""Reverse all renames that have been performed"""
2472
for from_, to in reversed(self.past_renames):
2473
os.rename(to, from_)
2474
# after rollback, don't reuse _FileMover
2476
pending_deletions = None
2478
def apply_deletions(self):
2479
"""Apply all marked deletions"""
2480
for path in self.pending_deletions:
2482
# after apply_deletions, don't reuse _FileMover
2484
pending_deletions = None
added
removed
bzrlib/transform.py
