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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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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 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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id_sets = (self._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 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):
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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."""
760
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:
765
name_ids = [(n.lower(), t) for n, t in name_ids]
769
for name, trans_id in name_ids:
771
kind = self.final_kind(trans_id)
774
file_id = self.final_file_id(trans_id)
775
if kind is None and file_id is None:
777
if name == last_name:
778
conflicts.append(('duplicate', last_trans_id, trans_id,
781
last_trans_id = trans_id
784
def _duplicate_ids(self):
785
"""Each inventory id may only be used once"""
787
removed_tree_ids = set((self.tree_file_id(trans_id) for trans_id in
789
all_ids = self._tree.all_file_ids()
790
active_tree_ids = all_ids.difference(removed_tree_ids)
791
for trans_id, file_id in self._new_id.iteritems():
792
if file_id in active_tree_ids:
793
old_trans_id = self.trans_id_tree_file_id(file_id)
794
conflicts.append(('duplicate id', old_trans_id, trans_id))
797
def _parent_type_conflicts(self, by_parent):
798
"""parents must have directory 'contents'."""
800
for parent_id, children in by_parent.iteritems():
801
if parent_id is ROOT_PARENT:
803
if not self._any_contents(children):
805
for child in children:
807
self.final_kind(child)
811
kind = self.final_kind(parent_id)
815
conflicts.append(('missing parent', parent_id))
816
elif kind != "directory":
817
conflicts.append(('non-directory parent', parent_id))
820
def _any_contents(self, trans_ids):
821
"""Return true if any of the trans_ids, will have contents."""
822
for trans_id in trans_ids:
824
kind = self.final_kind(trans_id)
830
def _limbo_name(self, trans_id):
831
"""Generate the limbo name of a file"""
832
limbo_name = self._limbo_files.get(trans_id)
833
if limbo_name is not None:
835
parent = self._new_parent.get(trans_id)
836
# if the parent directory is already in limbo (e.g. when building a
837
# tree), choose a limbo name inside the parent, to reduce further
839
use_direct_path = False
840
if self._new_contents.get(parent) == 'directory':
841
filename = self._new_name.get(trans_id)
842
if filename is not None:
843
if parent not in self._limbo_children:
844
self._limbo_children[parent] = set()
845
self._limbo_children_names[parent] = {}
846
use_direct_path = True
847
# the direct path can only be used if no other file has
848
# already taken this pathname, i.e. if the name is unused, or
849
# if it is already associated with this trans_id.
850
elif self._case_sensitive_target:
851
if (self._limbo_children_names[parent].get(filename)
852
in (trans_id, None)):
853
use_direct_path = True
855
for l_filename, l_trans_id in\
856
self._limbo_children_names[parent].iteritems():
857
if l_trans_id == trans_id:
859
if l_filename.lower() == filename.lower():
862
use_direct_path = True
865
limbo_name = pathjoin(self._limbo_files[parent], filename)
866
self._limbo_children[parent].add(trans_id)
867
self._limbo_children_names[parent][filename] = trans_id
869
limbo_name = pathjoin(self._limbodir, trans_id)
870
self._needs_rename.add(trans_id)
871
self._limbo_files[trans_id] = limbo_name
874
def _set_executability(self, path, entry, trans_id):
875
"""Set the executability of versioned files """
876
new_executability = self._new_executability[trans_id]
877
if entry is not None:
878
entry.executable = new_executability
879
if supports_executable():
880
abspath = self._tree.abspath(path)
881
current_mode = os.stat(abspath).st_mode
882
if new_executability:
885
to_mode = current_mode | (0100 & ~umask)
886
# Enable x-bit for others only if they can read it.
887
if current_mode & 0004:
888
to_mode |= 0001 & ~umask
889
if current_mode & 0040:
890
to_mode |= 0010 & ~umask
892
to_mode = current_mode & ~0111
893
os.chmod(abspath, to_mode)
895
def _new_entry(self, name, parent_id, file_id):
896
"""Helper function to create a new filesystem entry."""
897
trans_id = self.create_path(name, parent_id)
898
if file_id is not None:
899
self.version_file(file_id, trans_id)
902
def new_file(self, name, parent_id, contents, file_id=None,
904
"""Convenience method to create files.
906
name is the name of the file to create.
907
parent_id is the transaction id of the parent directory of the file.
908
contents is an iterator of bytestrings, which will be used to produce
910
:param file_id: The inventory ID of the file, if it is to be versioned.
911
:param executable: Only valid when a file_id has been supplied.
913
trans_id = self._new_entry(name, parent_id, file_id)
914
# TODO: rather than scheduling a set_executable call,
915
# have create_file create the file with the right mode.
916
self.create_file(contents, trans_id)
917
if executable is not None:
918
self.set_executability(executable, trans_id)
921
def new_directory(self, name, parent_id, file_id=None):
922
"""Convenience method to create directories.
924
name is the name of the directory to create.
925
parent_id is the transaction id of the parent directory of the
927
file_id is the inventory ID of the directory, if it is to be versioned.
929
trans_id = self._new_entry(name, parent_id, file_id)
930
self.create_directory(trans_id)
933
def new_symlink(self, name, parent_id, target, file_id=None):
934
"""Convenience method to create symbolic link.
936
name is the name of the symlink to create.
937
parent_id is the transaction id of the parent directory of the symlink.
938
target is a bytestring of the target of the symlink.
939
file_id is the inventory ID of the file, if it is to be versioned.
941
trans_id = self._new_entry(name, parent_id, file_id)
942
self.create_symlink(target, trans_id)
945
def _affected_ids(self):
946
"""Return the set of transform ids affected by the transform"""
947
trans_ids = set(self._removed_id)
948
trans_ids.update(self._new_id.keys())
949
trans_ids.update(self._removed_contents)
950
trans_ids.update(self._new_contents.keys())
951
trans_ids.update(self._new_executability.keys())
952
trans_ids.update(self._new_name.keys())
953
trans_ids.update(self._new_parent.keys())
956
def _get_file_id_maps(self):
957
"""Return mapping of file_ids to trans_ids in the to and from states"""
958
trans_ids = self._affected_ids()
961
# Build up two dicts: trans_ids associated with file ids in the
962
# FROM state, vs the TO state.
963
for trans_id in trans_ids:
964
from_file_id = self.tree_file_id(trans_id)
965
if from_file_id is not None:
966
from_trans_ids[from_file_id] = trans_id
967
to_file_id = self.final_file_id(trans_id)
968
if to_file_id is not None:
969
to_trans_ids[to_file_id] = trans_id
970
return from_trans_ids, to_trans_ids
972
def _from_file_data(self, from_trans_id, from_versioned, file_id):
973
"""Get data about a file in the from (tree) state
975
Return a (name, parent, kind, executable) tuple
977
from_path = self._tree_id_paths.get(from_trans_id)
979
# get data from working tree if versioned
980
from_entry = self._tree.inventory[file_id]
981
from_name = from_entry.name
982
from_parent = from_entry.parent_id
985
if from_path is None:
986
# File does not exist in FROM state
990
# File exists, but is not versioned. Have to use path-
992
from_name = os.path.basename(from_path)
993
tree_parent = self.get_tree_parent(from_trans_id)
994
from_parent = self.tree_file_id(tree_parent)
995
if from_path is not None:
996
from_kind, from_executable, from_stats = \
997
self._tree._comparison_data(from_entry, from_path)
1000
from_executable = False
1001
return from_name, from_parent, from_kind, from_executable
1003
def _to_file_data(self, to_trans_id, from_trans_id, from_executable):
1004
"""Get data about a file in the to (target) state
1006
Return a (name, parent, kind, executable) tuple
1008
to_name = self.final_name(to_trans_id)
1010
to_kind = self.final_kind(to_trans_id)
1013
to_parent = self.final_file_id(self.final_parent(to_trans_id))
1014
if to_trans_id in self._new_executability:
1015
to_executable = self._new_executability[to_trans_id]
1016
elif to_trans_id == from_trans_id:
1017
to_executable = from_executable
1019
to_executable = False
1020
return to_name, to_parent, to_kind, to_executable
1022
def iter_changes(self):
1023
"""Produce output in the same format as Tree.iter_changes.
1025
Will produce nonsensical results if invoked while inventory/filesystem
1026
conflicts (as reported by TreeTransform.find_conflicts()) are present.
1028
This reads the Transform, but only reproduces changes involving a
1029
file_id. Files that are not versioned in either of the FROM or TO
1030
states are not reflected.
1032
final_paths = FinalPaths(self)
1033
from_trans_ids, to_trans_ids = self._get_file_id_maps()
1035
# Now iterate through all active file_ids
1036
for file_id in set(from_trans_ids.keys() + to_trans_ids.keys()):
1038
from_trans_id = from_trans_ids.get(file_id)
1039
# find file ids, and determine versioning state
1040
if from_trans_id is None:
1041
from_versioned = False
1042
from_trans_id = to_trans_ids[file_id]
1044
from_versioned = True
1045
to_trans_id = to_trans_ids.get(file_id)
1046
if to_trans_id is None:
1047
to_versioned = False
1048
to_trans_id = from_trans_id
1052
from_name, from_parent, from_kind, from_executable = \
1053
self._from_file_data(from_trans_id, from_versioned, file_id)
1055
to_name, to_parent, to_kind, to_executable = \
1056
self._to_file_data(to_trans_id, from_trans_id, from_executable)
1058
if not from_versioned:
1061
from_path = self._tree_id_paths.get(from_trans_id)
1062
if not to_versioned:
1065
to_path = final_paths.get_path(to_trans_id)
1066
if from_kind != to_kind:
1068
elif to_kind in ('file', 'symlink') and (
1069
to_trans_id != from_trans_id or
1070
to_trans_id in self._new_contents):
1072
if (not modified and from_versioned == to_versioned and
1073
from_parent==to_parent and from_name == to_name and
1074
from_executable == to_executable):
1076
results.append((file_id, (from_path, to_path), modified,
1077
(from_versioned, to_versioned),
1078
(from_parent, to_parent),
1079
(from_name, to_name),
1080
(from_kind, to_kind),
1081
(from_executable, to_executable)))
1082
return iter(sorted(results, key=lambda x:x[1]))
1084
def get_preview_tree(self):
1085
"""Return a tree representing the result of the transform.
1087
This tree only supports the subset of Tree functionality required
1088
by show_diff_trees. It must only be compared to tt._tree.
1090
return _PreviewTree(self)
1093
class TreeTransform(TreeTransformBase):
1094
"""Represent a tree transformation.
1096
This object is designed to support incremental generation of the transform,
1099
However, it gives optimum performance when parent directories are created
1100
before their contents. The transform is then able to put child files
1101
directly in their parent directory, avoiding later renames.
1103
It is easy to produce malformed transforms, but they are generally
1104
harmless. Attempting to apply a malformed transform will cause an
1105
exception to be raised before any modifications are made to the tree.
1107
Many kinds of malformed transforms can be corrected with the
1108
resolve_conflicts function. The remaining ones indicate programming error,
1109
such as trying to create a file with no path.
1111
Two sets of file creation methods are supplied. Convenience methods are:
1116
These are composed of the low-level methods:
1118
* create_file or create_directory or create_symlink
1122
Transform/Transaction ids
1123
-------------------------
1124
trans_ids are temporary ids assigned to all files involved in a transform.
1125
It's possible, even common, that not all files in the Tree have trans_ids.
1127
trans_ids are used because filenames and file_ids are not good enough
1128
identifiers; filenames change, and not all files have file_ids. File-ids
1129
are also associated with trans-ids, so that moving a file moves its
1132
trans_ids are only valid for the TreeTransform that generated them.
1136
Limbo is a temporary directory use to hold new versions of files.
1137
Files are added to limbo by create_file, create_directory, create_symlink,
1138
and their convenience variants (new_*). Files may be removed from limbo
1139
using cancel_creation. Files are renamed from limbo into their final
1140
location as part of TreeTransform.apply
1142
Limbo must be cleaned up, by either calling TreeTransform.apply or
1143
calling TreeTransform.finalize.
1145
Files are placed into limbo inside their parent directories, where
1146
possible. This reduces subsequent renames, and makes operations involving
1147
lots of files faster. This optimization is only possible if the parent
1148
directory is created *before* creating any of its children, so avoid
1149
creating children before parents, where possible.
1153
This temporary directory is used by _FileMover for storing files that are
1154
about to be deleted. In case of rollback, the files will be restored.
1155
FileMover does not delete files until it is sure that a rollback will not
1158
def __init__(self, tree, pb=DummyProgress()):
1159
"""Note: a tree_write lock is taken on the tree.
1161
Use TreeTransform.finalize() to release the lock (can be omitted if
1162
TreeTransform.apply() called).
1164
tree.lock_tree_write()
1167
limbodir = urlutils.local_path_from_url(
1168
tree._transport.abspath('limbo'))
1172
if e.errno == errno.EEXIST:
1173
raise ExistingLimbo(limbodir)
1174
deletiondir = urlutils.local_path_from_url(
1175
tree._transport.abspath('pending-deletion'))
1177
os.mkdir(deletiondir)
1179
if e.errno == errno.EEXIST:
1180
raise errors.ExistingPendingDeletion(deletiondir)
1185
TreeTransformBase.__init__(self, tree, limbodir, pb,
1186
tree.case_sensitive)
1187
self._deletiondir = deletiondir
1189
def apply(self, no_conflicts=False, precomputed_delta=None, _mover=None):
1190
"""Apply all changes to the inventory and filesystem.
1192
If filesystem or inventory conflicts are present, MalformedTransform
1195
If apply succeeds, finalize is not necessary.
1197
:param no_conflicts: if True, the caller guarantees there are no
1198
conflicts, so no check is made.
1199
:param precomputed_delta: An inventory delta to use instead of
1201
:param _mover: Supply an alternate FileMover, for testing
1203
if not no_conflicts:
1204
conflicts = self.find_conflicts()
1205
if len(conflicts) != 0:
1206
raise MalformedTransform(conflicts=conflicts)
1207
if precomputed_delta is None:
1208
new_inventory_delta = []
1209
inventory_delta = new_inventory_delta
1211
new_inventory_delta = None
1212
inventory_delta = precomputed_delta
1213
child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
1216
mover = _FileMover()
1220
child_pb.update('Apply phase', 0, 2)
1221
self._apply_removals(new_inventory_delta, mover)
1222
child_pb.update('Apply phase', 1, 2)
1223
modified_paths = self._apply_insertions(new_inventory_delta,
1229
mover.apply_deletions()
1232
self._tree.apply_inventory_delta(inventory_delta)
1235
return _TransformResults(modified_paths, self.rename_count)
1237
def _apply_removals(self, inventory_delta, mover):
1238
"""Perform tree operations that remove directory/inventory names.
1240
That is, delete files that are to be deleted, and put any files that
1241
need renaming into limbo. This must be done in strict child-to-parent
1244
If inventory_delta is None, no inventory delta generation is performed.
1246
tree_paths = list(self._tree_path_ids.iteritems())
1247
tree_paths.sort(reverse=True)
1248
child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
1250
for num, data in enumerate(tree_paths):
1251
path, trans_id = data
1252
child_pb.update('removing file', num, len(tree_paths))
1253
full_path = self._tree.abspath(path)
1254
if trans_id in self._removed_contents:
1255
mover.pre_delete(full_path, os.path.join(self._deletiondir,
1257
elif trans_id in self._new_name or trans_id in \
1260
mover.rename(full_path, self._limbo_name(trans_id))
1262
if e.errno != errno.ENOENT:
1265
self.rename_count += 1
1266
if (trans_id in self._removed_id
1267
and inventory_delta is not None):
1268
if trans_id == self._new_root:
1269
file_id = self._tree.get_root_id()
1271
file_id = self.tree_file_id(trans_id)
1272
# File-id isn't really being deleted, just moved
1273
if file_id in self._r_new_id:
1275
inventory_delta.append((path, None, file_id, None))
1279
def _apply_insertions(self, inventory_delta, mover):
1280
"""Perform tree operations that insert directory/inventory names.
1282
That is, create any files that need to be created, and restore from
1283
limbo any files that needed renaming. This must be done in strict
1284
parent-to-child order.
1286
If inventory_delta is None, no inventory delta is calculated, and
1287
no list of modified paths is returned.
1289
new_paths = self.new_paths(filesystem_only=(inventory_delta is None))
1292
new_path_file_ids = dict((t, self.final_file_id(t)) for p, t in
1294
if inventory_delta is not None:
1295
entries = self._tree.iter_entries_by_dir(
1296
new_path_file_ids.values())
1297
old_paths = dict((e.file_id, p) for p, e in entries)
1298
child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
1300
for num, (path, trans_id) in enumerate(new_paths):
1303
child_pb.update('adding file', num, len(new_paths))
1304
full_path = self._tree.abspath(path)
1305
if trans_id in self._needs_rename:
1307
mover.rename(self._limbo_name(trans_id), full_path)
1309
# We may be renaming a dangling inventory id
1310
if e.errno != errno.ENOENT:
1313
self.rename_count += 1
1314
if inventory_delta is not None:
1315
if (trans_id in self._new_contents or
1316
self.path_changed(trans_id)):
1317
if trans_id in self._new_contents:
1318
modified_paths.append(full_path)
1319
completed_new.append(trans_id)
1320
file_id = new_path_file_ids[trans_id]
1321
if file_id is not None and (trans_id in self._new_id or
1322
trans_id in self._new_name or
1323
trans_id in self._new_parent
1324
or trans_id in self._new_executability):
1326
kind = self.final_kind(trans_id)
1328
kind = self._tree.stored_kind(file_id)
1329
parent_trans_id = self.final_parent(trans_id)
1330
parent_file_id = new_path_file_ids.get(parent_trans_id)
1331
if parent_file_id is None:
1332
parent_file_id = self.final_file_id(
1334
if trans_id in self._new_reference_revision:
1335
new_entry = inventory.TreeReference(
1337
self._new_name[trans_id],
1338
self.final_file_id(self._new_parent[trans_id]),
1339
None, self._new_reference_revision[trans_id])
1341
new_entry = inventory.make_entry(kind,
1342
self.final_name(trans_id),
1343
parent_file_id, file_id)
1344
old_path = old_paths.get(new_entry.file_id)
1345
inventory_delta.append(
1346
(old_path, path, new_entry.file_id, new_entry))
1348
if trans_id in self._new_executability:
1349
self._set_executability(path, new_entry, trans_id)
1352
if inventory_delta is None:
1353
self._new_contents.clear()
1355
for trans_id in completed_new:
1356
del self._new_contents[trans_id]
1357
return modified_paths
1360
class TransformPreview(TreeTransformBase):
1361
"""A TreeTransform for generating preview trees.
1363
Unlike TreeTransform, this version works when the input tree is a
1364
RevisionTree, rather than a WorkingTree. As a result, it tends to ignore
1365
unversioned files in the input tree.
1368
def __init__(self, tree, pb=DummyProgress(), case_sensitive=True):
1370
limbodir = tempfile.mkdtemp(prefix='bzr-limbo-')
1371
TreeTransformBase.__init__(self, tree, limbodir, pb, case_sensitive)
1373
def canonical_path(self, path):
1376
def tree_kind(self, trans_id):
1377
path = self._tree_id_paths.get(trans_id)
1379
raise NoSuchFile(None)
1380
file_id = self._tree.path2id(path)
1381
return self._tree.kind(file_id)
1383
def _set_mode(self, trans_id, mode_id, typefunc):
1384
"""Set the mode of new file contents.
1385
The mode_id is the existing file to get the mode from (often the same
1386
as trans_id). The operation is only performed if there's a mode match
1387
according to typefunc.
1389
# is it ok to ignore this? probably
1392
def iter_tree_children(self, parent_id):
1393
"""Iterate through the entry's tree children, if any"""
1395
path = self._tree_id_paths[parent_id]
1398
file_id = self.tree_file_id(parent_id)
1401
children = getattr(self._tree.inventory[file_id], 'children', {})
1402
for child in children:
1403
childpath = joinpath(path, child)
1404
yield self.trans_id_tree_path(childpath)
1407
class _PreviewTree(tree.Tree):
1408
"""Partial implementation of Tree to support show_diff_trees"""
1410
def __init__(self, transform):
1411
self._transform = transform
1412
self._final_paths = FinalPaths(transform)
1413
self.__by_parent = None
1414
self._parent_ids = []
1416
def _changes(self, file_id):
1417
for changes in self._transform.iter_changes():
1418
if changes[0] == file_id:
1421
def _content_change(self, file_id):
1422
"""Return True if the content of this file changed"""
1423
changes = self._changes(file_id)
1424
# changes[2] is true if the file content changed. See
1425
# InterTree.iter_changes.
1426
return (changes is not None and changes[2])
1428
def _get_repository(self):
1429
repo = getattr(self._transform._tree, '_repository', None)
1431
repo = self._transform._tree.branch.repository
1434
def _iter_parent_trees(self):
1435
for revision_id in self.get_parent_ids():
1437
yield self.revision_tree(revision_id)
1438
except errors.NoSuchRevisionInTree:
1439
yield self._get_repository().revision_tree(revision_id)
1441
def _get_file_revision(self, file_id, vf, tree_revision):
1442
parent_keys = [(file_id, self._file_revision(t, file_id)) for t in
1443
self._iter_parent_trees()]
1444
vf.add_lines((file_id, tree_revision), parent_keys,
1445
self.get_file(file_id).readlines())
1446
repo = self._get_repository()
1447
base_vf = repo.texts
1448
if base_vf not in vf.fallback_versionedfiles:
1449
vf.fallback_versionedfiles.append(base_vf)
1450
return tree_revision
1452
def _stat_limbo_file(self, file_id):
1453
trans_id = self._transform.trans_id_file_id(file_id)
1454
name = self._transform._limbo_name(trans_id)
1455
return os.lstat(name)
1458
def _by_parent(self):
1459
if self.__by_parent is None:
1460
self.__by_parent = self._transform.by_parent()
1461
return self.__by_parent
1463
def lock_read(self):
1464
# Perhaps in theory, this should lock the TreeTransform?
1471
def inventory(self):
1472
"""This Tree does not use inventory as its backing data."""
1473
raise NotImplementedError(_PreviewTree.inventory)
1475
def get_root_id(self):
1476
return self._transform.final_file_id(self._transform.root)
1478
def all_file_ids(self):
1479
tree_ids = set(self._transform._tree.all_file_ids())
1480
tree_ids.difference_update(self._transform.tree_file_id(t)
1481
for t in self._transform._removed_id)
1482
tree_ids.update(self._transform._new_id.values())
1486
return iter(self.all_file_ids())
1488
def paths2ids(self, specific_files, trees=None, require_versioned=False):
1489
"""See Tree.paths2ids"""
1490
to_find = set(specific_files)
1492
for (file_id, paths, changed, versioned, parent, name, kind,
1493
executable) in self._transform.iter_changes():
1494
if paths[1] in to_find:
1495
result.append(file_id)
1496
to_find.remove(paths[1])
1497
result.update(self._transform._tree.paths2ids(to_find,
1498
trees=[], require_versioned=require_versioned))
1501
def _path2trans_id(self, path):
1502
segments = splitpath(path)
1503
cur_parent = self._transform.root
1504
for cur_segment in segments:
1505
for child in self._all_children(cur_parent):
1506
if self._transform.final_name(child) == cur_segment:
1513
def path2id(self, path):
1514
return self._transform.final_file_id(self._path2trans_id(path))
1516
def id2path(self, file_id):
1517
trans_id = self._transform.trans_id_file_id(file_id)
1519
return self._final_paths._determine_path(trans_id)
1521
raise errors.NoSuchId(self, file_id)
1523
def _all_children(self, trans_id):
1524
children = set(self._transform.iter_tree_children(trans_id))
1525
# children in the _new_parent set are provided by _by_parent.
1526
children.difference_update(self._transform._new_parent.keys())
1527
children.update(self._by_parent.get(trans_id, []))
1530
def _make_inv_entries(self, ordered_entries, specific_file_ids):
1531
for trans_id, parent_file_id in ordered_entries:
1532
file_id = self._transform.final_file_id(trans_id)
1535
if (specific_file_ids is not None
1536
and file_id not in specific_file_ids):
1539
kind = self._transform.final_kind(trans_id)
1541
kind = self._transform._tree.stored_kind(file_id)
1542
new_entry = inventory.make_entry(
1544
self._transform.final_name(trans_id),
1545
parent_file_id, file_id)
1546
yield new_entry, trans_id
1548
def iter_entries_by_dir(self, specific_file_ids=None):
1549
# This may not be a maximally efficient implementation, but it is
1550
# reasonably straightforward. An implementation that grafts the
1551
# TreeTransform changes onto the tree's iter_entries_by_dir results
1552
# might be more efficient, but requires tricky inferences about stack
1554
todo = [ROOT_PARENT]
1556
while len(todo) > 0:
1558
parent_file_id = self._transform.final_file_id(parent)
1559
children = list(self._all_children(parent))
1560
paths = dict(zip(children, self._final_paths.get_paths(children)))
1561
children.sort(key=paths.get)
1562
todo.extend(reversed(children))
1563
for trans_id in children:
1564
ordered_ids.append((trans_id, parent_file_id))
1565
for entry, trans_id in self._make_inv_entries(ordered_ids,
1567
yield unicode(self._final_paths.get_path(trans_id)), entry
1569
def kind(self, file_id):
1570
trans_id = self._transform.trans_id_file_id(file_id)
1571
return self._transform.final_kind(trans_id)
1573
def stored_kind(self, file_id):
1574
trans_id = self._transform.trans_id_file_id(file_id)
1576
return self._transform._new_contents[trans_id]
1578
return self._transform._tree.stored_kind(file_id)
1580
def get_file_mtime(self, file_id, path=None):
1581
"""See Tree.get_file_mtime"""
1582
if not self._content_change(file_id):
1583
return self._transform._tree.get_file_mtime(file_id, path)
1584
return self._stat_limbo_file(file_id).st_mtime
1586
def get_file_size(self, file_id):
1587
"""See Tree.get_file_size"""
1588
if self.kind(file_id) == 'file':
1589
return self._transform._tree.get_file_size(file_id)
1593
def get_file_sha1(self, file_id, path=None, stat_value=None):
1594
return self._transform._tree.get_file_sha1(file_id)
1596
def is_executable(self, file_id, path=None):
1597
trans_id = self._transform.trans_id_file_id(file_id)
1599
return self._transform._new_executability[trans_id]
1601
return self._transform._tree.is_executable(file_id, path)
1603
def path_content_summary(self, path):
1604
trans_id = self._path2trans_id(path)
1605
tt = self._transform
1606
tree_path = tt._tree_id_paths.get(trans_id)
1607
kind = tt._new_contents.get(trans_id)
1609
if tree_path is None or trans_id in tt._removed_contents:
1610
return 'missing', None, None, None
1611
summary = tt._tree.path_content_summary(tree_path)
1612
kind, size, executable, link_or_sha1 = summary
1615
limbo_name = tt._limbo_name(trans_id)
1616
if trans_id in tt._new_reference_revision:
1617
kind = 'tree-reference'
1619
statval = os.lstat(limbo_name)
1620
size = statval.st_size
1621
if not supports_executable():
1624
executable = statval.st_mode & S_IEXEC
1628
if kind == 'symlink':
1629
link_or_sha1 = os.readlink(limbo_name)
1630
if supports_executable():
1631
executable = tt._new_executability.get(trans_id, executable)
1632
return kind, size, executable, link_or_sha1
1634
def iter_changes(self, from_tree, include_unchanged=False,
1635
specific_files=None, pb=None, extra_trees=None,
1636
require_versioned=True, want_unversioned=False):
1637
"""See InterTree.iter_changes.
1639
This implementation does not support include_unchanged, specific_files,
1640
or want_unversioned. extra_trees, require_versioned, and pb are
1643
if from_tree is not self._transform._tree:
1644
raise ValueError('from_tree must be transform source tree.')
1645
if include_unchanged:
1646
raise ValueError('include_unchanged is not supported')
1647
if specific_files is not None:
1648
raise ValueError('specific_files is not supported')
1649
if want_unversioned:
1650
raise ValueError('want_unversioned is not supported')
1651
return self._transform.iter_changes()
1653
def get_file(self, file_id, path=None):
1654
"""See Tree.get_file"""
1655
if not self._content_change(file_id):
1656
return self._transform._tree.get_file(file_id, path)
1657
trans_id = self._transform.trans_id_file_id(file_id)
1658
name = self._transform._limbo_name(trans_id)
1659
return open(name, 'rb')
1661
def get_file_text(self, file_id):
1662
text_file = self.get_file(file_id)
1664
return text_file.read()
1668
def annotate_iter(self, file_id,
1669
default_revision=_mod_revision.CURRENT_REVISION):
1670
changes = self._changes(file_id)
1674
changed_content, versioned, kind = (changes[2], changes[3],
1678
get_old = (kind[0] == 'file' and versioned[0])
1680
old_annotation = self._transform._tree.annotate_iter(file_id,
1681
default_revision=default_revision)
1685
return old_annotation
1686
if not changed_content:
1687
return old_annotation
1688
return annotate.reannotate([old_annotation],
1689
self.get_file(file_id).readlines(),
1692
def get_symlink_target(self, file_id):
1693
"""See Tree.get_symlink_target"""
1694
if not self._content_change(file_id):
1695
return self._transform._tree.get_symlink_target(file_id)
1696
trans_id = self._transform.trans_id_file_id(file_id)
1697
name = self._transform._limbo_name(trans_id)
1698
return os.readlink(name)
1700
def list_files(self, include_root=False):
1701
return self._transform._tree.list_files(include_root)
1703
def walkdirs(self, prefix=""):
1704
return self._transform._tree.walkdirs(prefix)
1706
def get_parent_ids(self):
1707
return self._parent_ids
1709
def set_parent_ids(self, parent_ids):
1710
self._parent_ids = parent_ids
1712
def get_revision_tree(self, revision_id):
1713
return self._transform._tree.get_revision_tree(revision_id)
1716
def joinpath(parent, child):
1717
"""Join tree-relative paths, handling the tree root specially"""
1718
if parent is None or parent == "":
1721
return pathjoin(parent, child)
1724
class FinalPaths(object):
1725
"""Make path calculation cheap by memoizing paths.
1727
The underlying tree must not be manipulated between calls, or else
1728
the results will likely be incorrect.
1730
def __init__(self, transform):
1731
object.__init__(self)
1732
self._known_paths = {}
1733
self.transform = transform
1735
def _determine_path(self, trans_id):
1736
if trans_id == self.transform.root:
1738
name = self.transform.final_name(trans_id)
1739
parent_id = self.transform.final_parent(trans_id)
1740
if parent_id == self.transform.root:
1743
return pathjoin(self.get_path(parent_id), name)
1745
def get_path(self, trans_id):
1746
"""Find the final path associated with a trans_id"""
1747
if trans_id not in self._known_paths:
1748
self._known_paths[trans_id] = self._determine_path(trans_id)
1749
return self._known_paths[trans_id]
1751
def get_paths(self, trans_ids):
1752
return [(self.get_path(t), t) for t in trans_ids]
1756
def topology_sorted_ids(tree):
1757
"""Determine the topological order of the ids in a tree"""
1758
file_ids = list(tree)
1759
file_ids.sort(key=tree.id2path)
1763
def build_tree(tree, wt, accelerator_tree=None, hardlink=False,
1764
delta_from_tree=False):
1765
"""Create working tree for a branch, using a TreeTransform.
1767
This function should be used on empty trees, having a tree root at most.
1768
(see merge and revert functionality for working with existing trees)
1770
Existing files are handled like so:
1772
- Existing bzrdirs take precedence over creating new items. They are
1773
created as '%s.diverted' % name.
1774
- Otherwise, if the content on disk matches the content we are building,
1775
it is silently replaced.
1776
- Otherwise, conflict resolution will move the old file to 'oldname.moved'.
1778
:param tree: The tree to convert wt into a copy of
1779
:param wt: The working tree that files will be placed into
1780
:param accelerator_tree: A tree which can be used for retrieving file
1781
contents more quickly than tree itself, i.e. a workingtree. tree
1782
will be used for cases where accelerator_tree's content is different.
1783
:param hardlink: If true, hard-link files to accelerator_tree, where
1784
possible. accelerator_tree must implement abspath, i.e. be a
1786
:param delta_from_tree: If true, build_tree may use the input Tree to
1787
generate the inventory delta.
1789
wt.lock_tree_write()
1793
if accelerator_tree is not None:
1794
accelerator_tree.lock_read()
1796
return _build_tree(tree, wt, accelerator_tree, hardlink,
1799
if accelerator_tree is not None:
1800
accelerator_tree.unlock()
1807
def _build_tree(tree, wt, accelerator_tree, hardlink, delta_from_tree):
1808
"""See build_tree."""
1809
for num, _unused in enumerate(wt.all_file_ids()):
1810
if num > 0: # more than just a root
1811
raise errors.WorkingTreeAlreadyPopulated(base=wt.basedir)
1812
existing_files = set()
1813
for dir, files in wt.walkdirs():
1814
existing_files.update(f[0] for f in files)
1816
top_pb = bzrlib.ui.ui_factory.nested_progress_bar()
1817
pp = ProgressPhase("Build phase", 2, top_pb)
1818
if tree.inventory.root is not None:
1819
# This is kind of a hack: we should be altering the root
1820
# as part of the regular tree shape diff logic.
1821
# The conditional test here is to avoid doing an
1822
# expensive operation (flush) every time the root id
1823
# is set within the tree, nor setting the root and thus
1824
# marking the tree as dirty, because we use two different
1825
# idioms here: tree interfaces and inventory interfaces.
1826
if wt.get_root_id() != tree.get_root_id():
1827
wt.set_root_id(tree.get_root_id())
1829
tt = TreeTransform(wt)
1833
file_trans_id[wt.get_root_id()] = \
1834
tt.trans_id_tree_file_id(wt.get_root_id())
1835
pb = bzrlib.ui.ui_factory.nested_progress_bar()
1837
deferred_contents = []
1839
total = len(tree.inventory)
1841
precomputed_delta = []
1843
precomputed_delta = None
1844
for num, (tree_path, entry) in \
1845
enumerate(tree.inventory.iter_entries_by_dir()):
1846
pb.update("Building tree", num - len(deferred_contents), total)
1847
if entry.parent_id is None:
1850
file_id = entry.file_id
1852
precomputed_delta.append((None, tree_path, file_id, entry))
1853
if tree_path in existing_files:
1854
target_path = wt.abspath(tree_path)
1855
kind = file_kind(target_path)
1856
if kind == "directory":
1858
bzrdir.BzrDir.open(target_path)
1859
except errors.NotBranchError:
1863
if (file_id not in divert and
1864
_content_match(tree, entry, file_id, kind,
1866
tt.delete_contents(tt.trans_id_tree_path(tree_path))
1867
if kind == 'directory':
1869
parent_id = file_trans_id[entry.parent_id]
1870
if entry.kind == 'file':
1871
# We *almost* replicate new_by_entry, so that we can defer
1872
# getting the file text, and get them all at once.
1873
trans_id = tt.create_path(entry.name, parent_id)
1874
file_trans_id[file_id] = trans_id
1875
tt.version_file(file_id, trans_id)
1876
executable = tree.is_executable(file_id, tree_path)
1878
tt.set_executability(executable, trans_id)
1879
deferred_contents.append((file_id, trans_id))
1881
file_trans_id[file_id] = new_by_entry(tt, entry, parent_id,
1884
new_trans_id = file_trans_id[file_id]
1885
old_parent = tt.trans_id_tree_path(tree_path)
1886
_reparent_children(tt, old_parent, new_trans_id)
1887
offset = num + 1 - len(deferred_contents)
1888
_create_files(tt, tree, deferred_contents, pb, offset,
1889
accelerator_tree, hardlink)
1893
divert_trans = set(file_trans_id[f] for f in divert)
1894
resolver = lambda t, c: resolve_checkout(t, c, divert_trans)
1895
raw_conflicts = resolve_conflicts(tt, pass_func=resolver)
1896
if len(raw_conflicts) > 0:
1897
precomputed_delta = None
1898
conflicts = cook_conflicts(raw_conflicts, tt)
1899
for conflict in conflicts:
1902
wt.add_conflicts(conflicts)
1903
except errors.UnsupportedOperation:
1905
result = tt.apply(no_conflicts=True,
1906
precomputed_delta=precomputed_delta)
1913
def _create_files(tt, tree, desired_files, pb, offset, accelerator_tree,
1915
total = len(desired_files) + offset
1916
if accelerator_tree is None:
1917
new_desired_files = desired_files
1919
iter = accelerator_tree.iter_changes(tree, include_unchanged=True)
1920
unchanged = dict((f, p[1]) for (f, p, c, v, d, n, k, e)
1921
in iter if not (c or e[0] != e[1]))
1922
new_desired_files = []
1924
for file_id, trans_id in desired_files:
1925
accelerator_path = unchanged.get(file_id)
1926
if accelerator_path is None:
1927
new_desired_files.append((file_id, trans_id))
1929
pb.update('Adding file contents', count + offset, total)
1931
tt.create_hardlink(accelerator_tree.abspath(accelerator_path),
1934
contents = accelerator_tree.get_file(file_id, accelerator_path)
1936
tt.create_file(contents, trans_id)
1941
for count, (trans_id, contents) in enumerate(tree.iter_files_bytes(
1942
new_desired_files)):
1943
tt.create_file(contents, trans_id)
1944
pb.update('Adding file contents', count + offset, total)
1947
def _reparent_children(tt, old_parent, new_parent):
1948
for child in tt.iter_tree_children(old_parent):
1949
tt.adjust_path(tt.final_name(child), new_parent, child)
1951
def _reparent_transform_children(tt, old_parent, new_parent):
1952
by_parent = tt.by_parent()
1953
for child in by_parent[old_parent]:
1954
tt.adjust_path(tt.final_name(child), new_parent, child)
1955
return by_parent[old_parent]
1957
def _content_match(tree, entry, file_id, kind, target_path):
1958
if entry.kind != kind:
1960
if entry.kind == "directory":
1962
if entry.kind == "file":
1963
if tree.get_file(file_id).read() == file(target_path, 'rb').read():
1965
elif entry.kind == "symlink":
1966
if tree.get_symlink_target(file_id) == os.readlink(target_path):
1971
def resolve_checkout(tt, conflicts, divert):
1972
new_conflicts = set()
1973
for c_type, conflict in ((c[0], c) for c in conflicts):
1974
# Anything but a 'duplicate' would indicate programmer error
1975
if c_type != 'duplicate':
1976
raise AssertionError(c_type)
1977
# Now figure out which is new and which is old
1978
if tt.new_contents(conflict[1]):
1979
new_file = conflict[1]
1980
old_file = conflict[2]
1982
new_file = conflict[2]
1983
old_file = conflict[1]
1985
# We should only get here if the conflict wasn't completely
1987
final_parent = tt.final_parent(old_file)
1988
if new_file in divert:
1989
new_name = tt.final_name(old_file)+'.diverted'
1990
tt.adjust_path(new_name, final_parent, new_file)
1991
new_conflicts.add((c_type, 'Diverted to',
1992
new_file, old_file))
1994
new_name = tt.final_name(old_file)+'.moved'
1995
tt.adjust_path(new_name, final_parent, old_file)
1996
new_conflicts.add((c_type, 'Moved existing file to',
1997
old_file, new_file))
1998
return new_conflicts
2001
def new_by_entry(tt, entry, parent_id, tree):
2002
"""Create a new file according to its inventory entry"""
2006
contents = tree.get_file(entry.file_id).readlines()
2007
executable = tree.is_executable(entry.file_id)
2008
return tt.new_file(name, parent_id, contents, entry.file_id,
2010
elif kind in ('directory', 'tree-reference'):
2011
trans_id = tt.new_directory(name, parent_id, entry.file_id)
2012
if kind == 'tree-reference':
2013
tt.set_tree_reference(entry.reference_revision, trans_id)
2015
elif kind == 'symlink':
2016
target = tree.get_symlink_target(entry.file_id)
2017
return tt.new_symlink(name, parent_id, target, entry.file_id)
2019
raise errors.BadFileKindError(name, kind)
2022
def create_by_entry(tt, entry, tree, trans_id, lines=None, mode_id=None):
2023
"""Create new file contents according to an inventory entry."""
2024
if entry.kind == "file":
2026
lines = tree.get_file(entry.file_id).readlines()
2027
tt.create_file(lines, trans_id, mode_id=mode_id)
2028
elif entry.kind == "symlink":
2029
tt.create_symlink(tree.get_symlink_target(entry.file_id), trans_id)
2030
elif entry.kind == "directory":
2031
tt.create_directory(trans_id)
2034
def create_entry_executability(tt, entry, trans_id):
2035
"""Set the executability of a trans_id according to an inventory entry"""
2036
if entry.kind == "file":
2037
tt.set_executability(entry.executable, trans_id)
2040
def get_backup_name(entry, by_parent, parent_trans_id, tt):
2041
return _get_backup_name(entry.name, by_parent, parent_trans_id, tt)
2044
def _get_backup_name(name, by_parent, parent_trans_id, tt):
2045
"""Produce a backup-style name that appears to be available"""
2049
yield "%s.~%d~" % (name, counter)
2051
for new_name in name_gen():
2052
if not tt.has_named_child(by_parent, parent_trans_id, new_name):
2056
def _entry_changes(file_id, entry, working_tree):
2057
"""Determine in which ways the inventory entry has changed.
2059
Returns booleans: has_contents, content_mod, meta_mod
2060
has_contents means there are currently contents, but they differ
2061
contents_mod means contents need to be modified
2062
meta_mod means the metadata needs to be modified
2064
cur_entry = working_tree.inventory[file_id]
2066
working_kind = working_tree.kind(file_id)
2069
has_contents = False
2072
if has_contents is True:
2073
if entry.kind != working_kind:
2074
contents_mod, meta_mod = True, False
2076
cur_entry._read_tree_state(working_tree.id2path(file_id),
2078
contents_mod, meta_mod = entry.detect_changes(cur_entry)
2079
cur_entry._forget_tree_state()
2080
return has_contents, contents_mod, meta_mod
2083
def revert(working_tree, target_tree, filenames, backups=False,
2084
pb=DummyProgress(), change_reporter=None):
2085
"""Revert a working tree's contents to those of a target tree."""
2086
target_tree.lock_read()
2087
tt = TreeTransform(working_tree, pb)
2089
pp = ProgressPhase("Revert phase", 3, pb)
2091
child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
2093
merge_modified = _alter_files(working_tree, target_tree, tt,
2094
child_pb, filenames, backups)
2098
child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
2100
raw_conflicts = resolve_conflicts(tt, child_pb,
2101
lambda t, c: conflict_pass(t, c, target_tree))
2104
conflicts = cook_conflicts(raw_conflicts, tt)
2106
change_reporter = delta._ChangeReporter(
2107
unversioned_filter=working_tree.is_ignored)
2108
delta.report_changes(tt.iter_changes(), change_reporter)
2109
for conflict in conflicts:
2113
working_tree.set_merge_modified(merge_modified)
2115
target_tree.unlock()
2121
def _alter_files(working_tree, target_tree, tt, pb, specific_files,
2123
merge_modified = working_tree.merge_modified()
2124
change_list = target_tree.iter_changes(working_tree,
2125
specific_files=specific_files, pb=pb)
2126
if target_tree.inventory.root is None:
2133
for id_num, (file_id, path, changed_content, versioned, parent, name,
2134
kind, executable) in enumerate(change_list):
2135
if skip_root and file_id[0] is not None and parent[0] is None:
2137
trans_id = tt.trans_id_file_id(file_id)
2140
keep_content = False
2141
if kind[0] == 'file' and (backups or kind[1] is None):
2142
wt_sha1 = working_tree.get_file_sha1(file_id)
2143
if merge_modified.get(file_id) != wt_sha1:
2144
# acquire the basis tree lazily to prevent the
2145
# expense of accessing it when it's not needed ?
2146
# (Guessing, RBC, 200702)
2147
if basis_tree is None:
2148
basis_tree = working_tree.basis_tree()
2149
basis_tree.lock_read()
2150
if file_id in basis_tree:
2151
if wt_sha1 != basis_tree.get_file_sha1(file_id):
2153
elif kind[1] is None and not versioned[1]:
2155
if kind[0] is not None:
2156
if not keep_content:
2157
tt.delete_contents(trans_id)
2158
elif kind[1] is not None:
2159
parent_trans_id = tt.trans_id_file_id(parent[0])
2160
by_parent = tt.by_parent()
2161
backup_name = _get_backup_name(name[0], by_parent,
2162
parent_trans_id, tt)
2163
tt.adjust_path(backup_name, parent_trans_id, trans_id)
2164
new_trans_id = tt.create_path(name[0], parent_trans_id)
2165
if versioned == (True, True):
2166
tt.unversion_file(trans_id)
2167
tt.version_file(file_id, new_trans_id)
2168
# New contents should have the same unix perms as old
2171
trans_id = new_trans_id
2172
if kind[1] == 'directory':
2173
tt.create_directory(trans_id)
2174
elif kind[1] == 'symlink':
2175
tt.create_symlink(target_tree.get_symlink_target(file_id),
2177
elif kind[1] == 'file':
2178
deferred_files.append((file_id, (trans_id, mode_id)))
2179
if basis_tree is None:
2180
basis_tree = working_tree.basis_tree()
2181
basis_tree.lock_read()
2182
new_sha1 = target_tree.get_file_sha1(file_id)
2183
if (file_id in basis_tree and new_sha1 ==
2184
basis_tree.get_file_sha1(file_id)):
2185
if file_id in merge_modified:
2186
del merge_modified[file_id]
2188
merge_modified[file_id] = new_sha1
2190
# preserve the execute bit when backing up
2191
if keep_content and executable[0] == executable[1]:
2192
tt.set_executability(executable[1], trans_id)
2193
elif kind[1] is not None:
2194
raise AssertionError(kind[1])
2195
if versioned == (False, True):
2196
tt.version_file(file_id, trans_id)
2197
if versioned == (True, False):
2198
tt.unversion_file(trans_id)
2199
if (name[1] is not None and
2200
(name[0] != name[1] or parent[0] != parent[1])):
2202
name[1], tt.trans_id_file_id(parent[1]), trans_id)
2203
if executable[0] != executable[1] and kind[1] == "file":
2204
tt.set_executability(executable[1], trans_id)
2205
for (trans_id, mode_id), bytes in target_tree.iter_files_bytes(
2207
tt.create_file(bytes, trans_id, mode_id)
2209
if basis_tree is not None:
2211
return merge_modified
2214
def resolve_conflicts(tt, pb=DummyProgress(), pass_func=None):
2215
"""Make many conflict-resolution attempts, but die if they fail"""
2216
if pass_func is None:
2217
pass_func = conflict_pass
2218
new_conflicts = set()
2221
pb.update('Resolution pass', n+1, 10)
2222
conflicts = tt.find_conflicts()
2223
if len(conflicts) == 0:
2224
return new_conflicts
2225
new_conflicts.update(pass_func(tt, conflicts))
2226
raise MalformedTransform(conflicts=conflicts)
2231
def conflict_pass(tt, conflicts, path_tree=None):
2232
"""Resolve some classes of conflicts.
2234
:param tt: The transform to resolve conflicts in
2235
:param conflicts: The conflicts to resolve
2236
:param path_tree: A Tree to get supplemental paths from
2238
new_conflicts = set()
2239
for c_type, conflict in ((c[0], c) for c in conflicts):
2240
if c_type == 'duplicate id':
2241
tt.unversion_file(conflict[1])
2242
new_conflicts.add((c_type, 'Unversioned existing file',
2243
conflict[1], conflict[2], ))
2244
elif c_type == 'duplicate':
2245
# files that were renamed take precedence
2246
final_parent = tt.final_parent(conflict[1])
2247
if tt.path_changed(conflict[1]):
2248
existing_file, new_file = conflict[2], conflict[1]
2250
existing_file, new_file = conflict[1], conflict[2]
2251
new_name = tt.final_name(existing_file)+'.moved'
2252
tt.adjust_path(new_name, final_parent, existing_file)
2253
new_conflicts.add((c_type, 'Moved existing file to',
2254
existing_file, new_file))
2255
elif c_type == 'parent loop':
2256
# break the loop by undoing one of the ops that caused the loop
2258
while not tt.path_changed(cur):
2259
cur = tt.final_parent(cur)
2260
new_conflicts.add((c_type, 'Cancelled move', cur,
2261
tt.final_parent(cur),))
2262
tt.adjust_path(tt.final_name(cur), tt.get_tree_parent(cur), cur)
2264
elif c_type == 'missing parent':
2265
trans_id = conflict[1]
2267
tt.cancel_deletion(trans_id)
2268
new_conflicts.add(('deleting parent', 'Not deleting',
2273
tt.final_name(trans_id)
2275
if path_tree is not None:
2276
file_id = tt.final_file_id(trans_id)
2278
file_id = tt.inactive_file_id(trans_id)
2279
entry = path_tree.inventory[file_id]
2280
# special-case the other tree root (move its
2281
# children to current root)
2282
if entry.parent_id is None:
2284
moved = _reparent_transform_children(
2285
tt, trans_id, tt.root)
2287
new_conflicts.add((c_type, 'Moved to root',
2290
parent_trans_id = tt.trans_id_file_id(
2292
tt.adjust_path(entry.name, parent_trans_id,
2295
tt.create_directory(trans_id)
2296
new_conflicts.add((c_type, 'Created directory', trans_id))
2297
elif c_type == 'unversioned parent':
2298
file_id = tt.inactive_file_id(conflict[1])
2299
# special-case the other tree root (move its children instead)
2300
if path_tree and file_id in path_tree:
2301
if path_tree.inventory[file_id].parent_id is None:
2303
tt.version_file(file_id, conflict[1])
2304
new_conflicts.add((c_type, 'Versioned directory', conflict[1]))
2305
elif c_type == 'non-directory parent':
2306
parent_id = conflict[1]
2307
parent_parent = tt.final_parent(parent_id)
2308
parent_name = tt.final_name(parent_id)
2309
parent_file_id = tt.final_file_id(parent_id)
2310
new_parent_id = tt.new_directory(parent_name + '.new',
2311
parent_parent, parent_file_id)
2312
_reparent_transform_children(tt, parent_id, new_parent_id)
2313
if parent_file_id is not None:
2314
tt.unversion_file(parent_id)
2315
new_conflicts.add((c_type, 'Created directory', new_parent_id))
2316
return new_conflicts
2319
def cook_conflicts(raw_conflicts, tt):
2320
"""Generate a list of cooked conflicts, sorted by file path"""
2321
from bzrlib.conflicts import Conflict
2322
conflict_iter = iter_cook_conflicts(raw_conflicts, tt)
2323
return sorted(conflict_iter, key=Conflict.sort_key)
2326
def iter_cook_conflicts(raw_conflicts, tt):
2327
from bzrlib.conflicts import Conflict
2329
for conflict in raw_conflicts:
2330
c_type = conflict[0]
2331
action = conflict[1]
2332
modified_path = fp.get_path(conflict[2])
2333
modified_id = tt.final_file_id(conflict[2])
2334
if len(conflict) == 3:
2335
yield Conflict.factory(c_type, action=action, path=modified_path,
2336
file_id=modified_id)
2339
conflicting_path = fp.get_path(conflict[3])
2340
conflicting_id = tt.final_file_id(conflict[3])
2341
yield Conflict.factory(c_type, action=action, path=modified_path,
2342
file_id=modified_id,
2343
conflict_path=conflicting_path,
2344
conflict_file_id=conflicting_id)
2347
class _FileMover(object):
2348
"""Moves and deletes files for TreeTransform, tracking operations"""
2351
self.past_renames = []
2352
self.pending_deletions = []
2354
def rename(self, from_, to):
2355
"""Rename a file from one path to another. Functions like os.rename"""
2357
os.rename(from_, to)
2359
if e.errno in (errno.EEXIST, errno.ENOTEMPTY):
2360
raise errors.FileExists(to, str(e))
2362
self.past_renames.append((from_, to))
2364
def pre_delete(self, from_, to):
2365
"""Rename a file out of the way and mark it for deletion.
2367
Unlike os.unlink, this works equally well for files and directories.
2368
:param from_: The current file path
2369
:param to: A temporary path for the file
2371
self.rename(from_, to)
2372
self.pending_deletions.append(to)
2375
"""Reverse all renames that have been performed"""
2376
for from_, to in reversed(self.past_renames):
2377
os.rename(to, from_)
2378
# after rollback, don't reuse _FileMover
2380
pending_deletions = None
2382
def apply_deletions(self):
2383
"""Apply all marked deletions"""
2384
for path in self.pending_deletions:
2386
# after apply_deletions, don't reuse _FileMover
2388
pending_deletions = None
added
removed
bzrlib/transform.py
