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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
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from bzrlib.lazy_import import lazy_import
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lazy_import(globals(), """
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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 (file_kind, supports_executable, pathjoin, lexists,
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delete_any, has_symlinks)
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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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self._new_root = self.trans_id_tree_file_id(tree.get_root_id())
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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 (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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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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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 == errno.ENOENT:
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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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assert file_id is not None
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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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"""Determine the paths of all new and changed files"""
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fp = FinalPaths(self)
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for id_set in (self._new_name, self._new_parent, self._new_contents,
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self._new_id, self._new_executability):
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new_ids.update(id_set)
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new_paths = [(fp.get_path(t), t) for t in 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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# there is a new id for this file
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assert self._new_id[trans_id] is not None
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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 e.errno not in (errno.ENOENT, errno.ESRCH, errno.ENOTDIR):
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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):
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conflicts.append(('versioning bad kind', trans_id, kind))
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def _executability_conflicts(self):
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"""Check for bad executability changes.
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Only versioned files may have their executability set, because
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1. only versioned entries can have executability under windows
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2. only files can be executable. (The execute bit on a directory
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does not indicate searchability)
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for trans_id in self._new_executability:
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if self.final_file_id(trans_id) is None:
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conflicts.append(('unversioned executability', trans_id))
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non_file = self.final_kind(trans_id) != "file"
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conflicts.append(('non-file executability', trans_id))
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def _overwrite_conflicts(self):
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"""Check for overwrites (not permitted on Win32)"""
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for trans_id in self._new_contents:
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self.tree_kind(trans_id)
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if trans_id not in self._removed_contents:
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conflicts.append(('overwrite', trans_id,
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self.final_name(trans_id)))
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def _duplicate_entries(self, by_parent):
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"""No directory may have two entries with the same name."""
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if (self._new_name, self._new_parent) == ({}, {}):
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for children in by_parent.itervalues():
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name_ids = [(self.final_name(t), t) for t in children]
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if not self._case_sensitive_target:
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name_ids = [(n.lower(), t) for n, t in name_ids]
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for name, trans_id in name_ids:
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kind = self.final_kind(trans_id)
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file_id = self.final_file_id(trans_id)
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if kind is None and file_id is None:
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if name == last_name:
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conflicts.append(('duplicate', last_trans_id, trans_id,
765
last_trans_id = trans_id
768
def _duplicate_ids(self):
769
"""Each inventory id may only be used once"""
771
removed_tree_ids = set((self.tree_file_id(trans_id) for trans_id in
773
all_ids = self._tree.all_file_ids()
774
active_tree_ids = all_ids.difference(removed_tree_ids)
775
for trans_id, file_id in self._new_id.iteritems():
776
if file_id in active_tree_ids:
777
old_trans_id = self.trans_id_tree_file_id(file_id)
778
conflicts.append(('duplicate id', old_trans_id, trans_id))
781
def _parent_type_conflicts(self, by_parent):
782
"""parents must have directory 'contents'."""
784
for parent_id, children in by_parent.iteritems():
785
if parent_id is ROOT_PARENT:
787
if not self._any_contents(children):
789
for child in children:
791
self.final_kind(child)
795
kind = self.final_kind(parent_id)
799
conflicts.append(('missing parent', parent_id))
800
elif kind != "directory":
801
conflicts.append(('non-directory parent', parent_id))
804
def _any_contents(self, trans_ids):
805
"""Return true if any of the trans_ids, will have contents."""
806
for trans_id in trans_ids:
808
kind = self.final_kind(trans_id)
814
def _limbo_name(self, trans_id):
815
"""Generate the limbo name of a file"""
816
limbo_name = self._limbo_files.get(trans_id)
817
if limbo_name is not None:
819
parent = self._new_parent.get(trans_id)
820
# if the parent directory is already in limbo (e.g. when building a
821
# tree), choose a limbo name inside the parent, to reduce further
823
use_direct_path = False
824
if self._new_contents.get(parent) == 'directory':
825
filename = self._new_name.get(trans_id)
826
if filename is not None:
827
if parent not in self._limbo_children:
828
self._limbo_children[parent] = set()
829
self._limbo_children_names[parent] = {}
830
use_direct_path = True
831
# the direct path can only be used if no other file has
832
# already taken this pathname, i.e. if the name is unused, or
833
# if it is already associated with this trans_id.
834
elif self._case_sensitive_target:
835
if (self._limbo_children_names[parent].get(filename)
836
in (trans_id, None)):
837
use_direct_path = True
839
for l_filename, l_trans_id in\
840
self._limbo_children_names[parent].iteritems():
841
if l_trans_id == trans_id:
843
if l_filename.lower() == filename.lower():
846
use_direct_path = True
849
limbo_name = pathjoin(self._limbo_files[parent], filename)
850
self._limbo_children[parent].add(trans_id)
851
self._limbo_children_names[parent][filename] = trans_id
853
limbo_name = pathjoin(self._limbodir, trans_id)
854
self._needs_rename.add(trans_id)
855
self._limbo_files[trans_id] = limbo_name
858
def _set_executability(self, path, entry, trans_id):
859
"""Set the executability of versioned files """
860
new_executability = self._new_executability[trans_id]
861
entry.executable = new_executability
862
if supports_executable():
863
abspath = self._tree.abspath(path)
864
current_mode = os.stat(abspath).st_mode
865
if new_executability:
868
to_mode = current_mode | (0100 & ~umask)
869
# Enable x-bit for others only if they can read it.
870
if current_mode & 0004:
871
to_mode |= 0001 & ~umask
872
if current_mode & 0040:
873
to_mode |= 0010 & ~umask
875
to_mode = current_mode & ~0111
876
os.chmod(abspath, to_mode)
878
def _new_entry(self, name, parent_id, file_id):
879
"""Helper function to create a new filesystem entry."""
880
trans_id = self.create_path(name, parent_id)
881
if file_id is not None:
882
self.version_file(file_id, trans_id)
885
def new_file(self, name, parent_id, contents, file_id=None,
887
"""Convenience method to create files.
889
name is the name of the file to create.
890
parent_id is the transaction id of the parent directory of the file.
891
contents is an iterator of bytestrings, which will be used to produce
893
:param file_id: The inventory ID of the file, if it is to be versioned.
894
:param executable: Only valid when a file_id has been supplied.
896
trans_id = self._new_entry(name, parent_id, file_id)
897
# TODO: rather than scheduling a set_executable call,
898
# have create_file create the file with the right mode.
899
self.create_file(contents, trans_id)
900
if executable is not None:
901
self.set_executability(executable, trans_id)
904
def new_directory(self, name, parent_id, file_id=None):
905
"""Convenience method to create directories.
907
name is the name of the directory to create.
908
parent_id is the transaction id of the parent directory of the
910
file_id is the inventory ID of the directory, if it is to be versioned.
912
trans_id = self._new_entry(name, parent_id, file_id)
913
self.create_directory(trans_id)
916
def new_symlink(self, name, parent_id, target, file_id=None):
917
"""Convenience method to create symbolic link.
919
name is the name of the symlink to create.
920
parent_id is the transaction id of the parent directory of the symlink.
921
target is a bytestring of the target of the symlink.
922
file_id is the inventory ID of the file, if it is to be versioned.
924
trans_id = self._new_entry(name, parent_id, file_id)
925
self.create_symlink(target, trans_id)
928
def _affected_ids(self):
929
"""Return the set of transform ids affected by the transform"""
930
trans_ids = set(self._removed_id)
931
trans_ids.update(self._new_id.keys())
932
trans_ids.update(self._removed_contents)
933
trans_ids.update(self._new_contents.keys())
934
trans_ids.update(self._new_executability.keys())
935
trans_ids.update(self._new_name.keys())
936
trans_ids.update(self._new_parent.keys())
939
def _get_file_id_maps(self):
940
"""Return mapping of file_ids to trans_ids in the to and from states"""
941
trans_ids = self._affected_ids()
944
# Build up two dicts: trans_ids associated with file ids in the
945
# FROM state, vs the TO state.
946
for trans_id in trans_ids:
947
from_file_id = self.tree_file_id(trans_id)
948
if from_file_id is not None:
949
from_trans_ids[from_file_id] = trans_id
950
to_file_id = self.final_file_id(trans_id)
951
if to_file_id is not None:
952
to_trans_ids[to_file_id] = trans_id
953
return from_trans_ids, to_trans_ids
955
def _from_file_data(self, from_trans_id, from_versioned, file_id):
956
"""Get data about a file in the from (tree) state
958
Return a (name, parent, kind, executable) tuple
960
from_path = self._tree_id_paths.get(from_trans_id)
962
# get data from working tree if versioned
963
from_entry = self._tree.inventory[file_id]
964
from_name = from_entry.name
965
from_parent = from_entry.parent_id
968
if from_path is None:
969
# File does not exist in FROM state
973
# File exists, but is not versioned. Have to use path-
975
from_name = os.path.basename(from_path)
976
tree_parent = self.get_tree_parent(from_trans_id)
977
from_parent = self.tree_file_id(tree_parent)
978
if from_path is not None:
979
from_kind, from_executable, from_stats = \
980
self._tree._comparison_data(from_entry, from_path)
983
from_executable = False
984
return from_name, from_parent, from_kind, from_executable
986
def _to_file_data(self, to_trans_id, from_trans_id, from_executable):
987
"""Get data about a file in the to (target) state
989
Return a (name, parent, kind, executable) tuple
991
to_name = self.final_name(to_trans_id)
993
to_kind = self.final_kind(to_trans_id)
996
to_parent = self.final_file_id(self.final_parent(to_trans_id))
997
if to_trans_id in self._new_executability:
998
to_executable = self._new_executability[to_trans_id]
999
elif to_trans_id == from_trans_id:
1000
to_executable = from_executable
1002
to_executable = False
1003
return to_name, to_parent, to_kind, to_executable
1005
def iter_changes(self):
1006
"""Produce output in the same format as Tree.iter_changes.
1008
Will produce nonsensical results if invoked while inventory/filesystem
1009
conflicts (as reported by TreeTransform.find_conflicts()) are present.
1011
This reads the Transform, but only reproduces changes involving a
1012
file_id. Files that are not versioned in either of the FROM or TO
1013
states are not reflected.
1015
final_paths = FinalPaths(self)
1016
from_trans_ids, to_trans_ids = self._get_file_id_maps()
1018
# Now iterate through all active file_ids
1019
for file_id in set(from_trans_ids.keys() + to_trans_ids.keys()):
1021
from_trans_id = from_trans_ids.get(file_id)
1022
# find file ids, and determine versioning state
1023
if from_trans_id is None:
1024
from_versioned = False
1025
from_trans_id = to_trans_ids[file_id]
1027
from_versioned = True
1028
to_trans_id = to_trans_ids.get(file_id)
1029
if to_trans_id is None:
1030
to_versioned = False
1031
to_trans_id = from_trans_id
1035
from_name, from_parent, from_kind, from_executable = \
1036
self._from_file_data(from_trans_id, from_versioned, file_id)
1038
to_name, to_parent, to_kind, to_executable = \
1039
self._to_file_data(to_trans_id, from_trans_id, from_executable)
1041
if not from_versioned:
1044
from_path = self._tree_id_paths.get(from_trans_id)
1045
if not to_versioned:
1048
to_path = final_paths.get_path(to_trans_id)
1049
if from_kind != to_kind:
1051
elif to_kind in ('file', 'symlink') and (
1052
to_trans_id != from_trans_id or
1053
to_trans_id in self._new_contents):
1055
if (not modified and from_versioned == to_versioned and
1056
from_parent==to_parent and from_name == to_name and
1057
from_executable == to_executable):
1059
results.append((file_id, (from_path, to_path), modified,
1060
(from_versioned, to_versioned),
1061
(from_parent, to_parent),
1062
(from_name, to_name),
1063
(from_kind, to_kind),
1064
(from_executable, to_executable)))
1065
return iter(sorted(results, key=lambda x:x[1]))
1067
def get_preview_tree(self):
1068
"""Return a tree representing the result of the transform.
1070
This tree only supports the subset of Tree functionality required
1071
by show_diff_trees. It must only be compared to tt._tree.
1073
return _PreviewTree(self)
1076
class TreeTransform(TreeTransformBase):
1077
"""Represent a tree transformation.
1079
This object is designed to support incremental generation of the transform,
1082
However, it gives optimum performance when parent directories are created
1083
before their contents. The transform is then able to put child files
1084
directly in their parent directory, avoiding later renames.
1086
It is easy to produce malformed transforms, but they are generally
1087
harmless. Attempting to apply a malformed transform will cause an
1088
exception to be raised before any modifications are made to the tree.
1090
Many kinds of malformed transforms can be corrected with the
1091
resolve_conflicts function. The remaining ones indicate programming error,
1092
such as trying to create a file with no path.
1094
Two sets of file creation methods are supplied. Convenience methods are:
1099
These are composed of the low-level methods:
1101
* create_file or create_directory or create_symlink
1105
Transform/Transaction ids
1106
-------------------------
1107
trans_ids are temporary ids assigned to all files involved in a transform.
1108
It's possible, even common, that not all files in the Tree have trans_ids.
1110
trans_ids are used because filenames and file_ids are not good enough
1111
identifiers; filenames change, and not all files have file_ids. File-ids
1112
are also associated with trans-ids, so that moving a file moves its
1115
trans_ids are only valid for the TreeTransform that generated them.
1119
Limbo is a temporary directory use to hold new versions of files.
1120
Files are added to limbo by create_file, create_directory, create_symlink,
1121
and their convenience variants (new_*). Files may be removed from limbo
1122
using cancel_creation. Files are renamed from limbo into their final
1123
location as part of TreeTransform.apply
1125
Limbo must be cleaned up, by either calling TreeTransform.apply or
1126
calling TreeTransform.finalize.
1128
Files are placed into limbo inside their parent directories, where
1129
possible. This reduces subsequent renames, and makes operations involving
1130
lots of files faster. This optimization is only possible if the parent
1131
directory is created *before* creating any of its children, so avoid
1132
creating children before parents, where possible.
1136
This temporary directory is used by _FileMover for storing files that are
1137
about to be deleted. In case of rollback, the files will be restored.
1138
FileMover does not delete files until it is sure that a rollback will not
1141
def __init__(self, tree, pb=DummyProgress()):
1142
"""Note: a tree_write lock is taken on the tree.
1144
Use TreeTransform.finalize() to release the lock (can be omitted if
1145
TreeTransform.apply() called).
1147
tree.lock_tree_write()
1150
control_files = tree._control_files
1151
limbodir = urlutils.local_path_from_url(
1152
control_files.controlfilename('limbo'))
1156
if e.errno == errno.EEXIST:
1157
raise ExistingLimbo(limbodir)
1158
deletiondir = urlutils.local_path_from_url(
1159
control_files.controlfilename('pending-deletion'))
1161
os.mkdir(deletiondir)
1163
if e.errno == errno.EEXIST:
1164
raise errors.ExistingPendingDeletion(deletiondir)
1169
TreeTransformBase.__init__(self, tree, limbodir, pb,
1170
tree.case_sensitive)
1171
self._deletiondir = deletiondir
1173
def apply(self, no_conflicts=False, _mover=None):
1174
"""Apply all changes to the inventory and filesystem.
1176
If filesystem or inventory conflicts are present, MalformedTransform
1179
If apply succeeds, finalize is not necessary.
1181
:param no_conflicts: if True, the caller guarantees there are no
1182
conflicts, so no check is made.
1183
:param _mover: Supply an alternate FileMover, for testing
1185
if not no_conflicts:
1186
conflicts = self.find_conflicts()
1187
if len(conflicts) != 0:
1188
raise MalformedTransform(conflicts=conflicts)
1189
inventory_delta = []
1190
child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
1193
mover = _FileMover()
1197
child_pb.update('Apply phase', 0, 2)
1198
self._apply_removals(inventory_delta, mover)
1199
child_pb.update('Apply phase', 1, 2)
1200
modified_paths = self._apply_insertions(inventory_delta, mover)
1205
mover.apply_deletions()
1208
self._tree.apply_inventory_delta(inventory_delta)
1211
return _TransformResults(modified_paths, self.rename_count)
1213
def _apply_removals(self, inventory_delta, mover):
1214
"""Perform tree operations that remove directory/inventory names.
1216
That is, delete files that are to be deleted, and put any files that
1217
need renaming into limbo. This must be done in strict child-to-parent
1220
tree_paths = list(self._tree_path_ids.iteritems())
1221
tree_paths.sort(reverse=True)
1222
child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
1224
for num, data in enumerate(tree_paths):
1225
path, trans_id = data
1226
child_pb.update('removing file', num, len(tree_paths))
1227
full_path = self._tree.abspath(path)
1228
if trans_id in self._removed_contents:
1229
mover.pre_delete(full_path, os.path.join(self._deletiondir,
1231
elif trans_id in self._new_name or trans_id in \
1234
mover.rename(full_path, self._limbo_name(trans_id))
1236
if e.errno != errno.ENOENT:
1239
self.rename_count += 1
1240
if trans_id in self._removed_id:
1241
if trans_id == self._new_root:
1242
file_id = self._tree.get_root_id()
1244
file_id = self.tree_file_id(trans_id)
1245
assert file_id is not None
1246
# File-id isn't really being deleted, just moved
1247
if file_id in self._r_new_id:
1249
inventory_delta.append((path, None, file_id, None))
1253
def _apply_insertions(self, inventory_delta, mover):
1254
"""Perform tree operations that insert directory/inventory names.
1256
That is, create any files that need to be created, and restore from
1257
limbo any files that needed renaming. This must be done in strict
1258
parent-to-child order.
1260
new_paths = self.new_paths()
1262
child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
1265
for num, (path, trans_id) in enumerate(new_paths):
1267
child_pb.update('adding file', num, len(new_paths))
1268
if trans_id in self._new_contents or \
1269
self.path_changed(trans_id):
1270
full_path = self._tree.abspath(path)
1271
if trans_id in self._needs_rename:
1273
mover.rename(self._limbo_name(trans_id), full_path)
1275
# We may be renaming a dangling inventory id
1276
if e.errno != errno.ENOENT:
1279
self.rename_count += 1
1280
if trans_id in self._new_contents:
1281
modified_paths.append(full_path)
1282
completed_new.append(trans_id)
1283
file_id = self.final_file_id(trans_id)
1284
if file_id is not None and (trans_id in self._new_id or
1285
trans_id in self._new_name or trans_id in self._new_parent
1286
or trans_id in self._new_executability):
1288
kind = self.final_kind(trans_id)
1290
kind = self._tree.stored_kind(file_id)
1291
if trans_id in self._new_reference_revision:
1292
new_entry = inventory.TreeReference(
1293
self.final_file_id(trans_id),
1294
self._new_name[trans_id],
1295
self.final_file_id(self._new_parent[trans_id]),
1296
None, self._new_reference_revision[trans_id])
1298
new_entry = inventory.make_entry(kind,
1299
self.final_name(trans_id),
1300
self.final_file_id(self.final_parent(trans_id)),
1301
self.final_file_id(trans_id))
1303
old_path = self._tree.id2path(new_entry.file_id)
1304
except errors.NoSuchId:
1306
inventory_delta.append((old_path, path, new_entry.file_id,
1309
if trans_id in self._new_executability:
1310
self._set_executability(path, new_entry, trans_id)
1313
for trans_id in completed_new:
1314
del self._new_contents[trans_id]
1315
return modified_paths
1318
class TransformPreview(TreeTransformBase):
1319
"""A TreeTransform for generating preview trees.
1321
Unlike TreeTransform, this version works when the input tree is a
1322
RevisionTree, rather than a WorkingTree. As a result, it tends to ignore
1323
unversioned files in the input tree.
1326
def __init__(self, tree, pb=DummyProgress(), case_sensitive=True):
1328
limbodir = tempfile.mkdtemp(prefix='bzr-limbo-')
1329
TreeTransformBase.__init__(self, tree, limbodir, pb, case_sensitive)
1331
def canonical_path(self, path):
1334
def tree_kind(self, trans_id):
1335
path = self._tree_id_paths.get(trans_id)
1337
raise NoSuchFile(None)
1338
file_id = self._tree.path2id(path)
1339
return self._tree.kind(file_id)
1341
def _set_mode(self, trans_id, mode_id, typefunc):
1342
"""Set the mode of new file contents.
1343
The mode_id is the existing file to get the mode from (often the same
1344
as trans_id). The operation is only performed if there's a mode match
1345
according to typefunc.
1347
# is it ok to ignore this? probably
1350
def iter_tree_children(self, parent_id):
1351
"""Iterate through the entry's tree children, if any"""
1353
path = self._tree_id_paths[parent_id]
1356
file_id = self.tree_file_id(parent_id)
1357
for child in self._tree.inventory[file_id].children.iterkeys():
1358
childpath = joinpath(path, child)
1359
yield self.trans_id_tree_path(childpath)
1362
class _PreviewTree(object):
1363
"""Partial implementation of Tree to support show_diff_trees"""
1365
def __init__(self, transform):
1366
self._transform = transform
1368
def lock_read(self):
1369
# Perhaps in theory, this should lock the TreeTransform?
1375
def iter_changes(self, from_tree, include_unchanged=False,
1376
specific_files=None, pb=None, extra_trees=None,
1377
require_versioned=True, want_unversioned=False):
1378
"""See InterTree.iter_changes.
1380
This implementation does not support include_unchanged, specific_files,
1381
or want_unversioned. extra_trees, require_versioned, and pb are
1384
if from_tree is not self._transform._tree:
1385
raise ValueError('from_tree must be transform source tree.')
1386
if include_unchanged:
1387
raise ValueError('include_unchanged is not supported')
1388
if specific_files is not None:
1389
raise ValueError('specific_files is not supported')
1390
if want_unversioned:
1391
raise ValueError('want_unversioned is not supported')
1392
return self._transform.iter_changes()
1394
def kind(self, file_id):
1395
trans_id = self._transform.trans_id_file_id(file_id)
1396
return self._transform.final_kind(trans_id)
1398
def get_file_mtime(self, file_id, path=None):
1399
"""See Tree.get_file_mtime"""
1400
trans_id = self._transform.trans_id_file_id(file_id)
1401
name = self._transform._limbo_name(trans_id)
1402
return os.stat(name).st_mtime
1404
def get_file(self, file_id):
1405
"""See Tree.get_file"""
1406
trans_id = self._transform.trans_id_file_id(file_id)
1407
name = self._transform._limbo_name(trans_id)
1408
return open(name, 'rb')
1410
def get_symlink_target(self, file_id):
1411
"""See Tree.get_symlink_target"""
1412
trans_id = self._transform.trans_id_file_id(file_id)
1413
name = self._transform._limbo_name(trans_id)
1414
return os.readlink(name)
1416
def paths2ids(self, specific_files, trees=None, require_versioned=False):
1417
"""See Tree.paths2ids"""
1421
def joinpath(parent, child):
1422
"""Join tree-relative paths, handling the tree root specially"""
1423
if parent is None or parent == "":
1426
return pathjoin(parent, child)
1429
class FinalPaths(object):
1430
"""Make path calculation cheap by memoizing paths.
1432
The underlying tree must not be manipulated between calls, or else
1433
the results will likely be incorrect.
1435
def __init__(self, transform):
1436
object.__init__(self)
1437
self._known_paths = {}
1438
self.transform = transform
1440
def _determine_path(self, trans_id):
1441
if trans_id == self.transform.root:
1443
name = self.transform.final_name(trans_id)
1444
parent_id = self.transform.final_parent(trans_id)
1445
if parent_id == self.transform.root:
1448
return pathjoin(self.get_path(parent_id), name)
1450
def get_path(self, trans_id):
1451
"""Find the final path associated with a trans_id"""
1452
if trans_id not in self._known_paths:
1453
self._known_paths[trans_id] = self._determine_path(trans_id)
1454
return self._known_paths[trans_id]
1457
def topology_sorted_ids(tree):
1458
"""Determine the topological order of the ids in a tree"""
1459
file_ids = list(tree)
1460
file_ids.sort(key=tree.id2path)
1464
def build_tree(tree, wt, accelerator_tree=None, hardlink=False):
1465
"""Create working tree for a branch, using a TreeTransform.
1467
This function should be used on empty trees, having a tree root at most.
1468
(see merge and revert functionality for working with existing trees)
1470
Existing files are handled like so:
1472
- Existing bzrdirs take precedence over creating new items. They are
1473
created as '%s.diverted' % name.
1474
- Otherwise, if the content on disk matches the content we are building,
1475
it is silently replaced.
1476
- Otherwise, conflict resolution will move the old file to 'oldname.moved'.
1478
:param tree: The tree to convert wt into a copy of
1479
:param wt: The working tree that files will be placed into
1480
:param accelerator_tree: A tree which can be used for retrieving file
1481
contents more quickly than tree itself, i.e. a workingtree. tree
1482
will be used for cases where accelerator_tree's content is different.
1483
:param hardlink: If true, hard-link files to accelerator_tree, where
1484
possible. accelerator_tree must implement abspath, i.e. be a
1487
wt.lock_tree_write()
1491
if accelerator_tree is not None:
1492
accelerator_tree.lock_read()
1494
return _build_tree(tree, wt, accelerator_tree, hardlink)
1496
if accelerator_tree is not None:
1497
accelerator_tree.unlock()
1504
def _build_tree(tree, wt, accelerator_tree, hardlink):
1505
"""See build_tree."""
1506
for num, _unused in enumerate(wt.all_file_ids()):
1507
if num > 0: # more than just a root
1508
raise errors.WorkingTreeAlreadyPopulated(base=wt.basedir)
1510
top_pb = bzrlib.ui.ui_factory.nested_progress_bar()
1511
pp = ProgressPhase("Build phase", 2, top_pb)
1512
if tree.inventory.root is not None:
1513
# This is kind of a hack: we should be altering the root
1514
# as part of the regular tree shape diff logic.
1515
# The conditional test here is to avoid doing an
1516
# expensive operation (flush) every time the root id
1517
# is set within the tree, nor setting the root and thus
1518
# marking the tree as dirty, because we use two different
1519
# idioms here: tree interfaces and inventory interfaces.
1520
if wt.get_root_id() != tree.get_root_id():
1521
wt.set_root_id(tree.get_root_id())
1523
tt = TreeTransform(wt)
1527
file_trans_id[wt.get_root_id()] = \
1528
tt.trans_id_tree_file_id(wt.get_root_id())
1529
pb = bzrlib.ui.ui_factory.nested_progress_bar()
1531
deferred_contents = []
1533
for num, (tree_path, entry) in \
1534
enumerate(tree.inventory.iter_entries_by_dir()):
1535
pb.update("Building tree", num - len(deferred_contents),
1536
len(tree.inventory))
1537
if entry.parent_id is None:
1540
file_id = entry.file_id
1541
target_path = wt.abspath(tree_path)
1543
kind = file_kind(target_path)
1547
if kind == "directory":
1549
bzrdir.BzrDir.open(target_path)
1550
except errors.NotBranchError:
1554
if (file_id not in divert and
1555
_content_match(tree, entry, file_id, kind,
1557
tt.delete_contents(tt.trans_id_tree_path(tree_path))
1558
if kind == 'directory':
1560
if entry.parent_id not in file_trans_id:
1561
raise AssertionError(
1562
'entry %s parent id %r is not in file_trans_id %r'
1563
% (entry, entry.parent_id, file_trans_id))
1564
parent_id = file_trans_id[entry.parent_id]
1565
if entry.kind == 'file':
1566
# We *almost* replicate new_by_entry, so that we can defer
1567
# getting the file text, and get them all at once.
1568
trans_id = tt.create_path(entry.name, parent_id)
1569
file_trans_id[file_id] = trans_id
1570
tt.version_file(entry.file_id, trans_id)
1571
executable = tree.is_executable(entry.file_id, tree_path)
1572
if executable is not None:
1573
tt.set_executability(executable, trans_id)
1574
deferred_contents.append((entry.file_id, trans_id))
1576
file_trans_id[file_id] = new_by_entry(tt, entry, parent_id,
1579
new_trans_id = file_trans_id[file_id]
1580
old_parent = tt.trans_id_tree_path(tree_path)
1581
_reparent_children(tt, old_parent, new_trans_id)
1582
offset = num + 1 - len(deferred_contents)
1583
_create_files(tt, tree, deferred_contents, pb, offset,
1584
accelerator_tree, hardlink)
1588
divert_trans = set(file_trans_id[f] for f in divert)
1589
resolver = lambda t, c: resolve_checkout(t, c, divert_trans)
1590
raw_conflicts = resolve_conflicts(tt, pass_func=resolver)
1591
conflicts = cook_conflicts(raw_conflicts, tt)
1592
for conflict in conflicts:
1595
wt.add_conflicts(conflicts)
1596
except errors.UnsupportedOperation:
1598
result = tt.apply(no_conflicts=True)
1605
def _create_files(tt, tree, desired_files, pb, offset, accelerator_tree,
1607
total = len(desired_files) + offset
1608
if accelerator_tree is None:
1609
new_desired_files = desired_files
1611
iter = accelerator_tree.iter_changes(tree, include_unchanged=True)
1612
unchanged = dict((f, p[1]) for (f, p, c, v, d, n, k, e)
1613
in iter if not (c or e[0] != e[1]))
1614
new_desired_files = []
1616
for file_id, trans_id in desired_files:
1617
accelerator_path = unchanged.get(file_id)
1618
if accelerator_path is None:
1619
new_desired_files.append((file_id, trans_id))
1621
pb.update('Adding file contents', count + offset, total)
1623
tt.create_hardlink(accelerator_tree.abspath(accelerator_path),
1626
contents = accelerator_tree.get_file(file_id, accelerator_path)
1628
tt.create_file(contents, trans_id)
1633
for count, (trans_id, contents) in enumerate(tree.iter_files_bytes(
1634
new_desired_files)):
1635
tt.create_file(contents, trans_id)
1636
pb.update('Adding file contents', count + offset, total)
1639
def _reparent_children(tt, old_parent, new_parent):
1640
for child in tt.iter_tree_children(old_parent):
1641
tt.adjust_path(tt.final_name(child), new_parent, child)
1643
def _reparent_transform_children(tt, old_parent, new_parent):
1644
by_parent = tt.by_parent()
1645
for child in by_parent[old_parent]:
1646
tt.adjust_path(tt.final_name(child), new_parent, child)
1648
def _content_match(tree, entry, file_id, kind, target_path):
1649
if entry.kind != kind:
1651
if entry.kind == "directory":
1653
if entry.kind == "file":
1654
if tree.get_file(file_id).read() == file(target_path, 'rb').read():
1656
elif entry.kind == "symlink":
1657
if tree.get_symlink_target(file_id) == os.readlink(target_path):
1662
def resolve_checkout(tt, conflicts, divert):
1663
new_conflicts = set()
1664
for c_type, conflict in ((c[0], c) for c in conflicts):
1665
# Anything but a 'duplicate' would indicate programmer error
1666
assert c_type == 'duplicate', c_type
1667
# Now figure out which is new and which is old
1668
if tt.new_contents(conflict[1]):
1669
new_file = conflict[1]
1670
old_file = conflict[2]
1672
new_file = conflict[2]
1673
old_file = conflict[1]
1675
# We should only get here if the conflict wasn't completely
1677
final_parent = tt.final_parent(old_file)
1678
if new_file in divert:
1679
new_name = tt.final_name(old_file)+'.diverted'
1680
tt.adjust_path(new_name, final_parent, new_file)
1681
new_conflicts.add((c_type, 'Diverted to',
1682
new_file, old_file))
1684
new_name = tt.final_name(old_file)+'.moved'
1685
tt.adjust_path(new_name, final_parent, old_file)
1686
new_conflicts.add((c_type, 'Moved existing file to',
1687
old_file, new_file))
1688
return new_conflicts
1691
def new_by_entry(tt, entry, parent_id, tree):
1692
"""Create a new file according to its inventory entry"""
1696
contents = tree.get_file(entry.file_id).readlines()
1697
executable = tree.is_executable(entry.file_id)
1698
return tt.new_file(name, parent_id, contents, entry.file_id,
1700
elif kind in ('directory', 'tree-reference'):
1701
trans_id = tt.new_directory(name, parent_id, entry.file_id)
1702
if kind == 'tree-reference':
1703
tt.set_tree_reference(entry.reference_revision, trans_id)
1705
elif kind == 'symlink':
1706
target = tree.get_symlink_target(entry.file_id)
1707
return tt.new_symlink(name, parent_id, target, entry.file_id)
1709
raise errors.BadFileKindError(name, kind)
1712
def create_by_entry(tt, entry, tree, trans_id, lines=None, mode_id=None):
1713
"""Create new file contents according to an inventory entry."""
1714
if entry.kind == "file":
1716
lines = tree.get_file(entry.file_id).readlines()
1717
tt.create_file(lines, trans_id, mode_id=mode_id)
1718
elif entry.kind == "symlink":
1719
tt.create_symlink(tree.get_symlink_target(entry.file_id), trans_id)
1720
elif entry.kind == "directory":
1721
tt.create_directory(trans_id)
1724
def create_entry_executability(tt, entry, trans_id):
1725
"""Set the executability of a trans_id according to an inventory entry"""
1726
if entry.kind == "file":
1727
tt.set_executability(entry.executable, trans_id)
1730
@deprecated_function(zero_fifteen)
1731
def find_interesting(working_tree, target_tree, filenames):
1732
"""Find the ids corresponding to specified filenames.
1734
Deprecated: Please use tree1.paths2ids(filenames, [tree2]).
1736
working_tree.lock_read()
1738
target_tree.lock_read()
1740
return working_tree.paths2ids(filenames, [target_tree])
1742
target_tree.unlock()
1744
working_tree.unlock()
1747
@deprecated_function(zero_ninety)
1748
def change_entry(tt, file_id, working_tree, target_tree,
1749
trans_id_file_id, backups, trans_id, by_parent):
1750
"""Replace a file_id's contents with those from a target tree."""
1751
if file_id is None and target_tree is None:
1752
# skip the logic altogether in the deprecation test
1754
e_trans_id = trans_id_file_id(file_id)
1755
entry = target_tree.inventory[file_id]
1756
has_contents, contents_mod, meta_mod, = _entry_changes(file_id, entry,
1759
mode_id = e_trans_id
1762
tt.delete_contents(e_trans_id)
1764
parent_trans_id = trans_id_file_id(entry.parent_id)
1765
backup_name = get_backup_name(entry, by_parent,
1766
parent_trans_id, tt)
1767
tt.adjust_path(backup_name, parent_trans_id, e_trans_id)
1768
tt.unversion_file(e_trans_id)
1769
e_trans_id = tt.create_path(entry.name, parent_trans_id)
1770
tt.version_file(file_id, e_trans_id)
1771
trans_id[file_id] = e_trans_id
1772
create_by_entry(tt, entry, target_tree, e_trans_id, mode_id=mode_id)
1773
create_entry_executability(tt, entry, e_trans_id)
1776
tt.set_executability(entry.executable, e_trans_id)
1777
if tt.final_name(e_trans_id) != entry.name:
1780
parent_id = tt.final_parent(e_trans_id)
1781
parent_file_id = tt.final_file_id(parent_id)
1782
if parent_file_id != entry.parent_id:
1787
parent_trans_id = trans_id_file_id(entry.parent_id)
1788
tt.adjust_path(entry.name, parent_trans_id, e_trans_id)
1791
def get_backup_name(entry, by_parent, parent_trans_id, tt):
1792
return _get_backup_name(entry.name, by_parent, parent_trans_id, tt)
1795
def _get_backup_name(name, by_parent, parent_trans_id, tt):
1796
"""Produce a backup-style name that appears to be available"""
1800
yield "%s.~%d~" % (name, counter)
1802
for new_name in name_gen():
1803
if not tt.has_named_child(by_parent, parent_trans_id, new_name):
1807
def _entry_changes(file_id, entry, working_tree):
1808
"""Determine in which ways the inventory entry has changed.
1810
Returns booleans: has_contents, content_mod, meta_mod
1811
has_contents means there are currently contents, but they differ
1812
contents_mod means contents need to be modified
1813
meta_mod means the metadata needs to be modified
1815
cur_entry = working_tree.inventory[file_id]
1817
working_kind = working_tree.kind(file_id)
1820
has_contents = False
1823
if has_contents is True:
1824
if entry.kind != working_kind:
1825
contents_mod, meta_mod = True, False
1827
cur_entry._read_tree_state(working_tree.id2path(file_id),
1829
contents_mod, meta_mod = entry.detect_changes(cur_entry)
1830
cur_entry._forget_tree_state()
1831
return has_contents, contents_mod, meta_mod
1834
def revert(working_tree, target_tree, filenames, backups=False,
1835
pb=DummyProgress(), change_reporter=None):
1836
"""Revert a working tree's contents to those of a target tree."""
1837
target_tree.lock_read()
1838
tt = TreeTransform(working_tree, pb)
1840
pp = ProgressPhase("Revert phase", 3, pb)
1842
child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
1844
merge_modified = _alter_files(working_tree, target_tree, tt,
1845
child_pb, filenames, backups)
1849
child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
1851
raw_conflicts = resolve_conflicts(tt, child_pb,
1852
lambda t, c: conflict_pass(t, c, target_tree))
1855
conflicts = cook_conflicts(raw_conflicts, tt)
1857
change_reporter = delta._ChangeReporter(
1858
unversioned_filter=working_tree.is_ignored)
1859
delta.report_changes(tt.iter_changes(), change_reporter)
1860
for conflict in conflicts:
1864
working_tree.set_merge_modified(merge_modified)
1866
target_tree.unlock()
1872
def _alter_files(working_tree, target_tree, tt, pb, specific_files,
1874
merge_modified = working_tree.merge_modified()
1875
change_list = target_tree.iter_changes(working_tree,
1876
specific_files=specific_files, pb=pb)
1877
if target_tree.inventory.root is None:
1884
for id_num, (file_id, path, changed_content, versioned, parent, name,
1885
kind, executable) in enumerate(change_list):
1886
if skip_root and file_id[0] is not None and parent[0] is None:
1888
trans_id = tt.trans_id_file_id(file_id)
1891
keep_content = False
1892
if kind[0] == 'file' and (backups or kind[1] is None):
1893
wt_sha1 = working_tree.get_file_sha1(file_id)
1894
if merge_modified.get(file_id) != wt_sha1:
1895
# acquire the basis tree lazily to prevent the
1896
# expense of accessing it when it's not needed ?
1897
# (Guessing, RBC, 200702)
1898
if basis_tree is None:
1899
basis_tree = working_tree.basis_tree()
1900
basis_tree.lock_read()
1901
if file_id in basis_tree:
1902
if wt_sha1 != basis_tree.get_file_sha1(file_id):
1904
elif kind[1] is None and not versioned[1]:
1906
if kind[0] is not None:
1907
if not keep_content:
1908
tt.delete_contents(trans_id)
1909
elif kind[1] is not None:
1910
parent_trans_id = tt.trans_id_file_id(parent[0])
1911
by_parent = tt.by_parent()
1912
backup_name = _get_backup_name(name[0], by_parent,
1913
parent_trans_id, tt)
1914
tt.adjust_path(backup_name, parent_trans_id, trans_id)
1915
new_trans_id = tt.create_path(name[0], parent_trans_id)
1916
if versioned == (True, True):
1917
tt.unversion_file(trans_id)
1918
tt.version_file(file_id, new_trans_id)
1919
# New contents should have the same unix perms as old
1922
trans_id = new_trans_id
1923
if kind[1] == 'directory':
1924
tt.create_directory(trans_id)
1925
elif kind[1] == 'symlink':
1926
tt.create_symlink(target_tree.get_symlink_target(file_id),
1928
elif kind[1] == 'file':
1929
deferred_files.append((file_id, (trans_id, mode_id)))
1930
if basis_tree is None:
1931
basis_tree = working_tree.basis_tree()
1932
basis_tree.lock_read()
1933
new_sha1 = target_tree.get_file_sha1(file_id)
1934
if (file_id in basis_tree and new_sha1 ==
1935
basis_tree.get_file_sha1(file_id)):
1936
if file_id in merge_modified:
1937
del merge_modified[file_id]
1939
merge_modified[file_id] = new_sha1
1941
# preserve the execute bit when backing up
1942
if keep_content and executable[0] == executable[1]:
1943
tt.set_executability(executable[1], trans_id)
1945
assert kind[1] is None
1946
if versioned == (False, True):
1947
tt.version_file(file_id, trans_id)
1948
if versioned == (True, False):
1949
tt.unversion_file(trans_id)
1950
if (name[1] is not None and
1951
(name[0] != name[1] or parent[0] != parent[1])):
1953
name[1], tt.trans_id_file_id(parent[1]), trans_id)
1954
if executable[0] != executable[1] and kind[1] == "file":
1955
tt.set_executability(executable[1], trans_id)
1956
for (trans_id, mode_id), bytes in target_tree.iter_files_bytes(
1958
tt.create_file(bytes, trans_id, mode_id)
1960
if basis_tree is not None:
1962
return merge_modified
1965
def resolve_conflicts(tt, pb=DummyProgress(), pass_func=None):
1966
"""Make many conflict-resolution attempts, but die if they fail"""
1967
if pass_func is None:
1968
pass_func = conflict_pass
1969
new_conflicts = set()
1972
pb.update('Resolution pass', n+1, 10)
1973
conflicts = tt.find_conflicts()
1974
if len(conflicts) == 0:
1975
return new_conflicts
1976
new_conflicts.update(pass_func(tt, conflicts))
1977
raise MalformedTransform(conflicts=conflicts)
1982
def conflict_pass(tt, conflicts, path_tree=None):
1983
"""Resolve some classes of conflicts.
1985
:param tt: The transform to resolve conflicts in
1986
:param conflicts: The conflicts to resolve
1987
:param path_tree: A Tree to get supplemental paths from
1989
new_conflicts = set()
1990
for c_type, conflict in ((c[0], c) for c in conflicts):
1991
if c_type == 'duplicate id':
1992
tt.unversion_file(conflict[1])
1993
new_conflicts.add((c_type, 'Unversioned existing file',
1994
conflict[1], conflict[2], ))
1995
elif c_type == 'duplicate':
1996
# files that were renamed take precedence
1997
final_parent = tt.final_parent(conflict[1])
1998
if tt.path_changed(conflict[1]):
1999
existing_file, new_file = conflict[2], conflict[1]
2001
existing_file, new_file = conflict[1], conflict[2]
2002
new_name = tt.final_name(existing_file)+'.moved'
2003
tt.adjust_path(new_name, final_parent, existing_file)
2004
new_conflicts.add((c_type, 'Moved existing file to',
2005
existing_file, new_file))
2006
elif c_type == 'parent loop':
2007
# break the loop by undoing one of the ops that caused the loop
2009
while not tt.path_changed(cur):
2010
cur = tt.final_parent(cur)
2011
new_conflicts.add((c_type, 'Cancelled move', cur,
2012
tt.final_parent(cur),))
2013
tt.adjust_path(tt.final_name(cur), tt.get_tree_parent(cur), cur)
2015
elif c_type == 'missing parent':
2016
trans_id = conflict[1]
2018
tt.cancel_deletion(trans_id)
2019
new_conflicts.add(('deleting parent', 'Not deleting',
2022
tt.create_directory(trans_id)
2023
new_conflicts.add((c_type, 'Created directory', trans_id))
2025
tt.final_name(trans_id)
2027
if path_tree is not None:
2028
file_id = tt.final_file_id(trans_id)
2029
entry = path_tree.inventory[file_id]
2030
parent_trans_id = tt.trans_id_file_id(entry.parent_id)
2031
tt.adjust_path(entry.name, parent_trans_id, trans_id)
2032
elif c_type == 'unversioned parent':
2033
tt.version_file(tt.inactive_file_id(conflict[1]), conflict[1])
2034
new_conflicts.add((c_type, 'Versioned directory', conflict[1]))
2035
elif c_type == 'non-directory parent':
2036
parent_id = conflict[1]
2037
parent_parent = tt.final_parent(parent_id)
2038
parent_name = tt.final_name(parent_id)
2039
parent_file_id = tt.final_file_id(parent_id)
2040
new_parent_id = tt.new_directory(parent_name + '.new',
2041
parent_parent, parent_file_id)
2042
_reparent_transform_children(tt, parent_id, new_parent_id)
2043
if parent_file_id is not None:
2044
tt.unversion_file(parent_id)
2045
new_conflicts.add((c_type, 'Created directory', new_parent_id))
2046
return new_conflicts
2049
def cook_conflicts(raw_conflicts, tt):
2050
"""Generate a list of cooked conflicts, sorted by file path"""
2051
from bzrlib.conflicts import Conflict
2052
conflict_iter = iter_cook_conflicts(raw_conflicts, tt)
2053
return sorted(conflict_iter, key=Conflict.sort_key)
2056
def iter_cook_conflicts(raw_conflicts, tt):
2057
from bzrlib.conflicts import Conflict
2059
for conflict in raw_conflicts:
2060
c_type = conflict[0]
2061
action = conflict[1]
2062
modified_path = fp.get_path(conflict[2])
2063
modified_id = tt.final_file_id(conflict[2])
2064
if len(conflict) == 3:
2065
yield Conflict.factory(c_type, action=action, path=modified_path,
2066
file_id=modified_id)
2069
conflicting_path = fp.get_path(conflict[3])
2070
conflicting_id = tt.final_file_id(conflict[3])
2071
yield Conflict.factory(c_type, action=action, path=modified_path,
2072
file_id=modified_id,
2073
conflict_path=conflicting_path,
2074
conflict_file_id=conflicting_id)
2077
class _FileMover(object):
2078
"""Moves and deletes files for TreeTransform, tracking operations"""
2081
self.past_renames = []
2082
self.pending_deletions = []
2084
def rename(self, from_, to):
2085
"""Rename a file from one path to another. Functions like os.rename"""
2087
os.rename(from_, to)
2089
if e.errno in (errno.EEXIST, errno.ENOTEMPTY):
2090
raise errors.FileExists(to, str(e))
2092
self.past_renames.append((from_, to))
2094
def pre_delete(self, from_, to):
2095
"""Rename a file out of the way and mark it for deletion.
2097
Unlike os.unlink, this works equally well for files and directories.
2098
:param from_: The current file path
2099
:param to: A temporary path for the file
2101
self.rename(from_, to)
2102
self.pending_deletions.append(to)
2105
"""Reverse all renames that have been performed"""
2106
for from_, to in reversed(self.past_renames):
2107
os.rename(to, from_)
2108
# after rollback, don't reuse _FileMover
2110
pending_deletions = None
2112
def apply_deletions(self):
2113
"""Apply all marked deletions"""
2114
for path in self.pending_deletions:
2116
# after apply_deletions, don't reuse _FileMover
2118
pending_deletions = None
added
removed
bzrlib/transform.py
