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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.util import bencode
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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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self._new_parent = {}
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# mapping of trans_id with new contents -> new file_kind
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self._new_contents = {}
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# A mapping of transform ids to their limbo filename
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self._limbo_files = {}
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# A mapping of transform ids to a set of the transform ids of children
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# that their limbo directory has
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self._limbo_children = {}
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# Map transform ids to maps of child filename to child transform id
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self._limbo_children_names = {}
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# List of transform ids that need to be renamed from limbo into place
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self._needs_rename = set()
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# Set of trans_ids whose contents will be removed
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self._removed_contents = set()
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# Mapping of trans_id -> new execute-bit value
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self._new_executability = {}
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# Mapping of trans_id -> new tree-reference value
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self._new_reference_revision = {}
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# Mapping of trans_id -> new file_id
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# Mapping of old file-id -> trans_id
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self._non_present_ids = {}
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# Mapping of new file_id -> trans_id
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# Set of file_ids that will be removed
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self._removed_id = set()
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# Mapping of path in old tree -> trans_id
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self._tree_path_ids = {}
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# Mapping trans_id -> path in old tree
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self._tree_id_paths = {}
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# Cache of realpath results, to speed up canonical_path
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# Cache of relpath results, to speed up canonical_path
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# The trans_id that will be used as the tree root
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root_id = tree.get_root_id()
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if root_id is not None:
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self._new_root = self.trans_id_tree_file_id(root_id)
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self._new_root = None
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# Indictor of whether the transform has been applied
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# Whether the target is case sensitive
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self._case_sensitive_target = case_sensitive
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# A counter of how many files have been renamed
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self.rename_count = 0
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def __get_root(self):
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return self._new_root
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root = property(__get_root)
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"""Release the working tree lock, if held, clean up limbo dir.
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This is required if apply has not been invoked, but can be invoked
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if self._tree is None:
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entries = [(self._limbo_name(t), t, k) for t, k in
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self._new_contents.iteritems()]
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entries.sort(reverse=True)
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for path, trans_id, kind in entries:
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if kind == "directory":
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os.rmdir(self._limbodir)
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# We don't especially care *why* the dir is immortal.
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raise ImmortalLimbo(self._limbodir)
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if self._deletiondir is not None:
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os.rmdir(self._deletiondir)
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raise errors.ImmortalPendingDeletion(self._deletiondir)
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def _assign_id(self):
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"""Produce a new tranform id"""
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new_id = "new-%s" % self._id_number
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def create_path(self, name, parent):
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"""Assign a transaction id to a new path"""
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trans_id = self._assign_id()
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unique_add(self._new_name, trans_id, name)
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unique_add(self._new_parent, trans_id, parent)
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def adjust_path(self, name, parent, trans_id):
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"""Change the path that is assigned to a transaction id."""
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if trans_id == self._new_root:
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previous_parent = self._new_parent.get(trans_id)
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previous_name = self._new_name.get(trans_id)
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self._new_name[trans_id] = name
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self._new_parent[trans_id] = parent
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if parent == ROOT_PARENT:
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if self._new_root is not None:
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raise ValueError("Cannot have multiple roots.")
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self._new_root = trans_id
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if (trans_id in self._limbo_files and
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trans_id not in self._needs_rename):
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self._rename_in_limbo([trans_id])
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self._limbo_children[previous_parent].remove(trans_id)
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del self._limbo_children_names[previous_parent][previous_name]
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def _rename_in_limbo(self, trans_ids):
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"""Fix limbo names so that the right final path is produced.
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This means we outsmarted ourselves-- we tried to avoid renaming
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these files later by creating them with their final names in their
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final parents. But now the previous name or parent is no longer
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suitable, so we have to rename them.
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Even for trans_ids that have no new contents, we must remove their
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entries from _limbo_files, because they are now stale.
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for trans_id in trans_ids:
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old_path = self._limbo_files.pop(trans_id)
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if trans_id not in self._new_contents:
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new_path = self._limbo_name(trans_id)
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os.rename(old_path, new_path)
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def adjust_root_path(self, name, parent):
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"""Emulate moving the root by moving all children, instead.
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We do this by undoing the association of root's transaction id with the
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current tree. This allows us to create a new directory with that
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transaction id. We unversion the root directory and version the
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physically new directory, and hope someone versions the tree root
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old_root = self._new_root
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old_root_file_id = self.final_file_id(old_root)
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# force moving all children of root
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for child_id in self.iter_tree_children(old_root):
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if child_id != parent:
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self.adjust_path(self.final_name(child_id),
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self.final_parent(child_id), child_id)
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file_id = self.final_file_id(child_id)
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if file_id is not None:
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self.unversion_file(child_id)
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self.version_file(file_id, child_id)
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# the physical root needs a new transaction id
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self._tree_path_ids.pop("")
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self._tree_id_paths.pop(old_root)
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self._new_root = self.trans_id_tree_file_id(self._tree.get_root_id())
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if parent == old_root:
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parent = self._new_root
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self.adjust_path(name, parent, old_root)
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self.create_directory(old_root)
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self.version_file(old_root_file_id, old_root)
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self.unversion_file(self._new_root)
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def trans_id_tree_file_id(self, inventory_id):
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"""Determine the transaction id of a working tree file.
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This reflects only files that already exist, not ones that will be
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added by transactions.
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if inventory_id is None:
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raise ValueError('None is not a valid file id')
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path = self._tree.id2path(inventory_id)
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return self.trans_id_tree_path(path)
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def trans_id_file_id(self, file_id):
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"""Determine or set the transaction id associated with a file ID.
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A new id is only created for file_ids that were never present. If
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a transaction has been unversioned, it is deliberately still returned.
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(this will likely lead to an unversioned parent conflict.)
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raise ValueError('None is not a valid file id')
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if file_id in self._r_new_id and self._r_new_id[file_id] is not None:
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return self._r_new_id[file_id]
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self._tree.iter_entries_by_dir([file_id]).next()
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except StopIteration:
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if file_id in self._non_present_ids:
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return self._non_present_ids[file_id]
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trans_id = self._assign_id()
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self._non_present_ids[file_id] = trans_id
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return self.trans_id_tree_file_id(file_id)
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def canonical_path(self, path):
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"""Get the canonical tree-relative path"""
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# don't follow final symlinks
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abs = self._tree.abspath(path)
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if abs in self._relpaths:
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return self._relpaths[abs]
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dirname, basename = os.path.split(abs)
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if dirname not in self._realpaths:
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self._realpaths[dirname] = os.path.realpath(dirname)
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dirname = self._realpaths[dirname]
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abs = pathjoin(dirname, basename)
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if dirname in self._relpaths:
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relpath = pathjoin(self._relpaths[dirname], basename)
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relpath = relpath.rstrip('/\\')
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relpath = self._tree.relpath(abs)
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self._relpaths[abs] = relpath
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def trans_id_tree_path(self, path):
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"""Determine (and maybe set) the transaction ID for a tree path."""
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path = self.canonical_path(path)
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if path not in self._tree_path_ids:
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self._tree_path_ids[path] = self._assign_id()
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self._tree_id_paths[self._tree_path_ids[path]] = path
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return self._tree_path_ids[path]
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def get_tree_parent(self, trans_id):
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"""Determine id of the parent in the tree."""
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path = self._tree_id_paths[trans_id]
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return self.trans_id_tree_path(os.path.dirname(path))
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def create_file(self, contents, trans_id, mode_id=None):
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"""Schedule creation of a new file.
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Contents is an iterator of strings, all of which will be written
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to the target destination.
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New file takes the permissions of any existing file with that id,
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unless mode_id is specified.
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name = self._limbo_name(trans_id)
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unique_add(self._new_contents, trans_id, 'file')
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# Clean up the file, it never got registered so
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# TreeTransform.finalize() won't clean it up.
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f.writelines(contents)
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self._set_mode(trans_id, mode_id, S_ISREG)
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def _set_mode(self, trans_id, mode_id, typefunc):
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"""Set the mode of new file contents.
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The mode_id is the existing file to get the mode from (often the same
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as trans_id). The operation is only performed if there's a mode match
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according to typefunc.
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old_path = self._tree_id_paths[mode_id]
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mode = os.stat(self._tree.abspath(old_path)).st_mode
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if e.errno in (errno.ENOENT, errno.ENOTDIR):
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# Either old_path doesn't exist, or the parent of the
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# target is not a directory (but will be one eventually)
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# Either way, we know it doesn't exist *right now*
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# See also bug #248448
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os.chmod(self._limbo_name(trans_id), mode)
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def create_hardlink(self, path, trans_id):
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"""Schedule creation of a hard link"""
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name = self._limbo_name(trans_id)
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if e.errno != errno.EPERM:
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raise errors.HardLinkNotSupported(path)
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unique_add(self._new_contents, trans_id, 'file')
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# Clean up the file, it never got registered so
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# TreeTransform.finalize() won't clean it up.
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def create_directory(self, trans_id):
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"""Schedule creation of a new directory.
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See also new_directory.
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os.mkdir(self._limbo_name(trans_id))
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unique_add(self._new_contents, trans_id, 'directory')
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def create_symlink(self, target, trans_id):
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"""Schedule creation of a new symbolic link.
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target is a bytestring.
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See also new_symlink.
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os.symlink(target, self._limbo_name(trans_id))
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unique_add(self._new_contents, trans_id, 'symlink')
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path = FinalPaths(self).get_path(trans_id)
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raise UnableCreateSymlink(path=path)
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def cancel_creation(self, trans_id):
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"""Cancel the creation of new file contents."""
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del self._new_contents[trans_id]
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children = self._limbo_children.get(trans_id)
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# if this is a limbo directory with children, move them before removing
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if children is not None:
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self._rename_in_limbo(children)
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del self._limbo_children[trans_id]
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del self._limbo_children_names[trans_id]
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delete_any(self._limbo_name(trans_id))
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def delete_contents(self, trans_id):
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"""Schedule the contents of a path entry for deletion"""
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self.tree_kind(trans_id)
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self._removed_contents.add(trans_id)
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def cancel_deletion(self, trans_id):
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"""Cancel a scheduled deletion"""
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self._removed_contents.remove(trans_id)
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def unversion_file(self, trans_id):
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"""Schedule a path entry to become unversioned"""
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self._removed_id.add(trans_id)
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def delete_versioned(self, trans_id):
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"""Delete and unversion a versioned file"""
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self.delete_contents(trans_id)
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self.unversion_file(trans_id)
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def set_executability(self, executability, trans_id):
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"""Schedule setting of the 'execute' bit
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To unschedule, set to None
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if executability is None:
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del self._new_executability[trans_id]
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unique_add(self._new_executability, trans_id, executability)
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def set_tree_reference(self, revision_id, trans_id):
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"""Set the reference associated with a directory"""
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unique_add(self._new_reference_revision, trans_id, revision_id)
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def version_file(self, file_id, trans_id):
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"""Schedule a file to become versioned."""
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unique_add(self._new_id, trans_id, file_id)
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unique_add(self._r_new_id, file_id, trans_id)
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def cancel_versioning(self, trans_id):
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"""Undo a previous versioning of a file"""
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file_id = self._new_id[trans_id]
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del self._new_id[trans_id]
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del self._r_new_id[file_id]
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def new_paths(self, filesystem_only=False):
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"""Determine the paths of all new and changed files.
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:param filesystem_only: if True, only calculate values for files
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that require renames or execute bit changes.
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stale_ids = self._needs_rename.difference(self._new_name)
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stale_ids.difference_update(self._new_parent)
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stale_ids.difference_update(self._new_contents)
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stale_ids.difference_update(self._new_id)
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needs_rename = self._needs_rename.difference(stale_ids)
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id_sets = (needs_rename, self._new_executability)
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id_sets = (self._new_name, self._new_parent, self._new_contents,
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self._new_id, self._new_executability)
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for id_set in id_sets:
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new_ids.update(id_set)
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return sorted(FinalPaths(self).get_paths(new_ids))
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def _inventory_altered(self):
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"""Get the trans_ids and paths of files needing new inv entries."""
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for id_set in [self._new_name, self._new_parent, self._new_id,
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self._new_executability]:
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new_ids.update(id_set)
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changed_kind = set(self._removed_contents)
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changed_kind.intersection_update(self._new_contents)
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changed_kind.difference_update(new_ids)
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changed_kind = (t for t in changed_kind if self.tree_kind(t) !=
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new_ids.update(changed_kind)
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return sorted(FinalPaths(self).get_paths(new_ids))
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def tree_kind(self, trans_id):
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"""Determine the file kind in the working tree.
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Raises NoSuchFile if the file does not exist
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path = self._tree_id_paths.get(trans_id)
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raise NoSuchFile(None)
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return file_kind(self._tree.abspath(path))
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if e.errno != errno.ENOENT:
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raise NoSuchFile(path)
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def final_kind(self, trans_id):
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"""Determine the final file kind, after any changes applied.
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Raises NoSuchFile if the file does not exist/has no contents.
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(It is conceivable that a path would be created without the
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corresponding contents insertion command)
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if trans_id in self._new_contents:
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return self._new_contents[trans_id]
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elif trans_id in self._removed_contents:
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raise NoSuchFile(None)
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return self.tree_kind(trans_id)
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def tree_file_id(self, trans_id):
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"""Determine the file id associated with the trans_id in the tree"""
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path = self._tree_id_paths[trans_id]
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# the file is a new, unversioned file, or invalid trans_id
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# the file is old; the old id is still valid
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if self._new_root == trans_id:
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return self._tree.get_root_id()
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return self._tree.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)
756
conflicts.append(('versioning no contents', trans_id))
758
if not InventoryEntry.versionable_kind(kind):
759
conflicts.append(('versioning bad kind', trans_id, kind))
762
def _executability_conflicts(self):
763
"""Check for bad executability changes.
765
Only versioned files may have their executability set, because
766
1. only versioned entries can have executability under windows
767
2. only files can be executable. (The execute bit on a directory
768
does not indicate searchability)
771
for trans_id in self._new_executability:
772
if self.final_file_id(trans_id) is None:
773
conflicts.append(('unversioned executability', trans_id))
776
non_file = self.final_kind(trans_id) != "file"
780
conflicts.append(('non-file executability', trans_id))
783
def _overwrite_conflicts(self):
784
"""Check for overwrites (not permitted on Win32)"""
786
for trans_id in self._new_contents:
788
self.tree_kind(trans_id)
791
if trans_id not in self._removed_contents:
792
conflicts.append(('overwrite', trans_id,
793
self.final_name(trans_id)))
796
def _duplicate_entries(self, by_parent):
797
"""No directory may have two entries with the same name."""
799
if (self._new_name, self._new_parent) == ({}, {}):
801
for children in by_parent.itervalues():
802
name_ids = [(self.final_name(t), t) for t in children]
803
if not self._case_sensitive_target:
804
name_ids = [(n.lower(), t) for n, t in name_ids]
808
for name, trans_id in name_ids:
810
kind = self.final_kind(trans_id)
813
file_id = self.final_file_id(trans_id)
814
if kind is None and file_id is None:
816
if name == last_name:
817
conflicts.append(('duplicate', last_trans_id, trans_id,
820
last_trans_id = trans_id
823
def _duplicate_ids(self):
824
"""Each inventory id may only be used once"""
826
removed_tree_ids = set((self.tree_file_id(trans_id) for trans_id in
828
all_ids = self._tree.all_file_ids()
829
active_tree_ids = all_ids.difference(removed_tree_ids)
830
for trans_id, file_id in self._new_id.iteritems():
831
if file_id in active_tree_ids:
832
old_trans_id = self.trans_id_tree_file_id(file_id)
833
conflicts.append(('duplicate id', old_trans_id, trans_id))
836
def _parent_type_conflicts(self, by_parent):
837
"""parents must have directory 'contents'."""
839
for parent_id, children in by_parent.iteritems():
840
if parent_id is ROOT_PARENT:
842
if not self._any_contents(children):
844
for child in children:
846
self.final_kind(child)
850
kind = self.final_kind(parent_id)
854
conflicts.append(('missing parent', parent_id))
855
elif kind != "directory":
856
conflicts.append(('non-directory parent', parent_id))
859
def _any_contents(self, trans_ids):
860
"""Return true if any of the trans_ids, will have contents."""
861
for trans_id in trans_ids:
863
kind = self.final_kind(trans_id)
869
def _limbo_name(self, trans_id):
870
"""Generate the limbo name of a file"""
871
limbo_name = self._limbo_files.get(trans_id)
872
if limbo_name is not None:
874
parent = self._new_parent.get(trans_id)
875
# if the parent directory is already in limbo (e.g. when building a
876
# tree), choose a limbo name inside the parent, to reduce further
878
use_direct_path = False
879
if self._new_contents.get(parent) == 'directory':
880
filename = self._new_name.get(trans_id)
881
if filename is not None:
882
if parent not in self._limbo_children:
883
self._limbo_children[parent] = set()
884
self._limbo_children_names[parent] = {}
885
use_direct_path = True
886
# the direct path can only be used if no other file has
887
# already taken this pathname, i.e. if the name is unused, or
888
# if it is already associated with this trans_id.
889
elif self._case_sensitive_target:
890
if (self._limbo_children_names[parent].get(filename)
891
in (trans_id, None)):
892
use_direct_path = True
894
for l_filename, l_trans_id in\
895
self._limbo_children_names[parent].iteritems():
896
if l_trans_id == trans_id:
898
if l_filename.lower() == filename.lower():
901
use_direct_path = True
904
limbo_name = pathjoin(self._limbo_files[parent], filename)
905
self._limbo_children[parent].add(trans_id)
906
self._limbo_children_names[parent][filename] = trans_id
908
limbo_name = pathjoin(self._limbodir, trans_id)
909
self._needs_rename.add(trans_id)
910
self._limbo_files[trans_id] = limbo_name
913
def _set_executability(self, path, trans_id):
914
"""Set the executability of versioned files """
915
if supports_executable():
916
new_executability = self._new_executability[trans_id]
917
abspath = self._tree.abspath(path)
918
current_mode = os.stat(abspath).st_mode
919
if new_executability:
922
to_mode = current_mode | (0100 & ~umask)
923
# Enable x-bit for others only if they can read it.
924
if current_mode & 0004:
925
to_mode |= 0001 & ~umask
926
if current_mode & 0040:
927
to_mode |= 0010 & ~umask
929
to_mode = current_mode & ~0111
930
os.chmod(abspath, to_mode)
932
def _new_entry(self, name, parent_id, file_id):
933
"""Helper function to create a new filesystem entry."""
934
trans_id = self.create_path(name, parent_id)
935
if file_id is not None:
936
self.version_file(file_id, trans_id)
939
def new_file(self, name, parent_id, contents, file_id=None,
941
"""Convenience method to create files.
943
name is the name of the file to create.
944
parent_id is the transaction id of the parent directory of the file.
945
contents is an iterator of bytestrings, which will be used to produce
947
:param file_id: The inventory ID of the file, if it is to be versioned.
948
:param executable: Only valid when a file_id has been supplied.
950
trans_id = self._new_entry(name, parent_id, file_id)
951
# TODO: rather than scheduling a set_executable call,
952
# have create_file create the file with the right mode.
953
self.create_file(contents, trans_id)
954
if executable is not None:
955
self.set_executability(executable, trans_id)
958
def new_directory(self, name, parent_id, file_id=None):
959
"""Convenience method to create directories.
961
name is the name of the directory to create.
962
parent_id is the transaction id of the parent directory of the
964
file_id is the inventory ID of the directory, if it is to be versioned.
966
trans_id = self._new_entry(name, parent_id, file_id)
967
self.create_directory(trans_id)
970
def new_symlink(self, name, parent_id, target, file_id=None):
971
"""Convenience method to create symbolic link.
973
name is the name of the symlink to create.
974
parent_id is the transaction id of the parent directory of the symlink.
975
target is a bytestring of the target of the symlink.
976
file_id is the inventory ID of the file, if it is to be versioned.
978
trans_id = self._new_entry(name, parent_id, file_id)
979
self.create_symlink(target, trans_id)
982
def _affected_ids(self):
983
"""Return the set of transform ids affected by the transform"""
984
trans_ids = set(self._removed_id)
985
trans_ids.update(self._new_id.keys())
986
trans_ids.update(self._removed_contents)
987
trans_ids.update(self._new_contents.keys())
988
trans_ids.update(self._new_executability.keys())
989
trans_ids.update(self._new_name.keys())
990
trans_ids.update(self._new_parent.keys())
993
def _get_file_id_maps(self):
994
"""Return mapping of file_ids to trans_ids in the to and from states"""
995
trans_ids = self._affected_ids()
998
# Build up two dicts: trans_ids associated with file ids in the
999
# FROM state, vs the TO state.
1000
for trans_id in trans_ids:
1001
from_file_id = self.tree_file_id(trans_id)
1002
if from_file_id is not None:
1003
from_trans_ids[from_file_id] = trans_id
1004
to_file_id = self.final_file_id(trans_id)
1005
if to_file_id is not None:
1006
to_trans_ids[to_file_id] = trans_id
1007
return from_trans_ids, to_trans_ids
1009
def _from_file_data(self, from_trans_id, from_versioned, file_id):
1010
"""Get data about a file in the from (tree) state
1012
Return a (name, parent, kind, executable) tuple
1014
from_path = self._tree_id_paths.get(from_trans_id)
1016
# get data from working tree if versioned
1017
from_entry = self._tree.iter_entries_by_dir([file_id]).next()[1]
1018
from_name = from_entry.name
1019
from_parent = from_entry.parent_id
1022
if from_path is None:
1023
# File does not exist in FROM state
1027
# File exists, but is not versioned. Have to use path-
1029
from_name = os.path.basename(from_path)
1030
tree_parent = self.get_tree_parent(from_trans_id)
1031
from_parent = self.tree_file_id(tree_parent)
1032
if from_path is not None:
1033
from_kind, from_executable, from_stats = \
1034
self._tree._comparison_data(from_entry, from_path)
1037
from_executable = False
1038
return from_name, from_parent, from_kind, from_executable
1040
def _to_file_data(self, to_trans_id, from_trans_id, from_executable):
1041
"""Get data about a file in the to (target) state
1043
Return a (name, parent, kind, executable) tuple
1045
to_name = self.final_name(to_trans_id)
1047
to_kind = self.final_kind(to_trans_id)
1050
to_parent = self.final_file_id(self.final_parent(to_trans_id))
1051
if to_trans_id in self._new_executability:
1052
to_executable = self._new_executability[to_trans_id]
1053
elif to_trans_id == from_trans_id:
1054
to_executable = from_executable
1056
to_executable = False
1057
return to_name, to_parent, to_kind, to_executable
1059
def iter_changes(self):
1060
"""Produce output in the same format as Tree.iter_changes.
1062
Will produce nonsensical results if invoked while inventory/filesystem
1063
conflicts (as reported by TreeTransform.find_conflicts()) are present.
1065
This reads the Transform, but only reproduces changes involving a
1066
file_id. Files that are not versioned in either of the FROM or TO
1067
states are not reflected.
1069
final_paths = FinalPaths(self)
1070
from_trans_ids, to_trans_ids = self._get_file_id_maps()
1072
# Now iterate through all active file_ids
1073
for file_id in set(from_trans_ids.keys() + to_trans_ids.keys()):
1075
from_trans_id = from_trans_ids.get(file_id)
1076
# find file ids, and determine versioning state
1077
if from_trans_id is None:
1078
from_versioned = False
1079
from_trans_id = to_trans_ids[file_id]
1081
from_versioned = True
1082
to_trans_id = to_trans_ids.get(file_id)
1083
if to_trans_id is None:
1084
to_versioned = False
1085
to_trans_id = from_trans_id
1089
from_name, from_parent, from_kind, from_executable = \
1090
self._from_file_data(from_trans_id, from_versioned, file_id)
1092
to_name, to_parent, to_kind, to_executable = \
1093
self._to_file_data(to_trans_id, from_trans_id, from_executable)
1095
if not from_versioned:
1098
from_path = self._tree_id_paths.get(from_trans_id)
1099
if not to_versioned:
1102
to_path = final_paths.get_path(to_trans_id)
1103
if from_kind != to_kind:
1105
elif to_kind in ('file', 'symlink') and (
1106
to_trans_id != from_trans_id or
1107
to_trans_id in self._new_contents):
1109
if (not modified and from_versioned == to_versioned and
1110
from_parent==to_parent and from_name == to_name and
1111
from_executable == to_executable):
1113
results.append((file_id, (from_path, to_path), modified,
1114
(from_versioned, to_versioned),
1115
(from_parent, to_parent),
1116
(from_name, to_name),
1117
(from_kind, to_kind),
1118
(from_executable, to_executable)))
1119
return iter(sorted(results, key=lambda x:x[1]))
1121
def get_preview_tree(self):
1122
"""Return a tree representing the result of the transform.
1124
This tree only supports the subset of Tree functionality required
1125
by show_diff_trees. It must only be compared to tt._tree.
1127
return _PreviewTree(self)
1129
def _get_parents_texts(self, trans_id):
1130
"""Get texts for compression parents of this file."""
1131
file_id = self.tree_file_id(trans_id)
1133
if file_id is None or self._tree.kind(file_id) != 'file':
1135
except errors.NoSuchFile:
1137
return (self._tree.get_file_text(file_id),)
1139
def _get_parents_lines(self, trans_id):
1140
"""Get lines for compression parents of this file."""
1141
return tuple(osutils.split_lines(p) for p
1142
in self._get_parents_texts(trans_id))
1144
def serialize(self, serializer):
1145
"""Serialize this TreeTransform.
1147
:param serializer: A Serialiser like pack.ContainerSerializer.
1149
new_name = dict((k, v.encode('utf-8')) for k, v in
1150
self._new_name.items())
1151
new_executability = dict((k, int(v)) for k, v in
1152
self._new_executability.items())
1153
tree_path_ids = dict((k.encode('utf-8'), v)
1154
for k, v in self._tree_path_ids.items())
1156
'_id_number': self._id_number,
1157
'_new_name': new_name,
1158
'_new_parent': self._new_parent,
1159
'_new_executability': new_executability,
1160
'_new_id': self._new_id,
1161
'_tree_path_ids': tree_path_ids,
1162
'_removed_id': list(self._removed_id),
1163
'_removed_contents': list(self._removed_contents),
1164
'_non_present_ids': self._non_present_ids,
1166
yield serializer.bytes_record(bencode.bencode(attribs),
1168
for trans_id, kind in self._new_contents.items():
1170
cur_file = open(self._limbo_name(trans_id), 'rb')
1172
lines = osutils.split_lines(cur_file.read())
1175
parents = self._get_parents_lines(trans_id)
1176
mpdiff = multiparent.MultiParent.from_lines(lines, parents)
1177
content = ''.join(mpdiff.to_patch())
1178
if kind == 'directory':
1180
if kind == 'symlink':
1181
content = os.readlink(self._limbo_name(trans_id))
1182
yield serializer.bytes_record(content, ((trans_id, kind),))
1185
def deserialize(self, records):
1186
"""Deserialize a stored TreeTransform.
1188
:param records: An iterable of (names, content) tuples, as per
1189
pack.ContainerPushParser.
1191
names, content = records.next()
1192
attribs = bencode.bdecode(content)
1193
self._id_number = attribs['_id_number']
1194
self._new_name = dict((k, v.decode('utf-8'))
1195
for k, v in attribs['_new_name'].items())
1196
self._new_parent = attribs['_new_parent']
1197
self._new_executability = dict((k, bool(v)) for k, v in
1198
attribs['_new_executability'].items())
1199
self._new_id = attribs['_new_id']
1200
self._r_new_id = dict((v, k) for k, v in self._new_id.items())
1201
self._tree_path_ids = {}
1202
self._tree_id_paths = {}
1203
for bytepath, trans_id in attribs['_tree_path_ids'].items():
1204
path = bytepath.decode('utf-8')
1205
self._tree_path_ids[path] = trans_id
1206
self._tree_id_paths[trans_id] = path
1207
self._removed_id = set(attribs['_removed_id'])
1208
self._removed_contents = set(attribs['_removed_contents'])
1209
self._non_present_ids = attribs['_non_present_ids']
1210
for ((trans_id, kind),), content in records:
1212
mpdiff = multiparent.MultiParent.from_patch(content)
1213
lines = mpdiff.to_lines(self._get_parents_texts(trans_id))
1214
self.create_file(lines, trans_id)
1215
if kind == 'directory':
1216
self.create_directory(trans_id)
1217
if kind == 'symlink':
1218
self.create_symlink(content, trans_id)
1221
class TreeTransform(TreeTransformBase):
1222
"""Represent a tree transformation.
1224
This object is designed to support incremental generation of the transform,
1227
However, it gives optimum performance when parent directories are created
1228
before their contents. The transform is then able to put child files
1229
directly in their parent directory, avoiding later renames.
1231
It is easy to produce malformed transforms, but they are generally
1232
harmless. Attempting to apply a malformed transform will cause an
1233
exception to be raised before any modifications are made to the tree.
1235
Many kinds of malformed transforms can be corrected with the
1236
resolve_conflicts function. The remaining ones indicate programming error,
1237
such as trying to create a file with no path.
1239
Two sets of file creation methods are supplied. Convenience methods are:
1244
These are composed of the low-level methods:
1246
* create_file or create_directory or create_symlink
1250
Transform/Transaction ids
1251
-------------------------
1252
trans_ids are temporary ids assigned to all files involved in a transform.
1253
It's possible, even common, that not all files in the Tree have trans_ids.
1255
trans_ids are used because filenames and file_ids are not good enough
1256
identifiers; filenames change, and not all files have file_ids. File-ids
1257
are also associated with trans-ids, so that moving a file moves its
1260
trans_ids are only valid for the TreeTransform that generated them.
1264
Limbo is a temporary directory use to hold new versions of files.
1265
Files are added to limbo by create_file, create_directory, create_symlink,
1266
and their convenience variants (new_*). Files may be removed from limbo
1267
using cancel_creation. Files are renamed from limbo into their final
1268
location as part of TreeTransform.apply
1270
Limbo must be cleaned up, by either calling TreeTransform.apply or
1271
calling TreeTransform.finalize.
1273
Files are placed into limbo inside their parent directories, where
1274
possible. This reduces subsequent renames, and makes operations involving
1275
lots of files faster. This optimization is only possible if the parent
1276
directory is created *before* creating any of its children, so avoid
1277
creating children before parents, where possible.
1281
This temporary directory is used by _FileMover for storing files that are
1282
about to be deleted. In case of rollback, the files will be restored.
1283
FileMover does not delete files until it is sure that a rollback will not
1286
def __init__(self, tree, pb=DummyProgress()):
1287
"""Note: a tree_write lock is taken on the tree.
1289
Use TreeTransform.finalize() to release the lock (can be omitted if
1290
TreeTransform.apply() called).
1292
tree.lock_tree_write()
1295
limbodir = urlutils.local_path_from_url(
1296
tree._transport.abspath('limbo'))
1300
if e.errno == errno.EEXIST:
1301
raise ExistingLimbo(limbodir)
1302
deletiondir = urlutils.local_path_from_url(
1303
tree._transport.abspath('pending-deletion'))
1305
os.mkdir(deletiondir)
1307
if e.errno == errno.EEXIST:
1308
raise errors.ExistingPendingDeletion(deletiondir)
1313
TreeTransformBase.__init__(self, tree, limbodir, pb,
1314
tree.case_sensitive)
1315
self._deletiondir = deletiondir
1317
def apply(self, no_conflicts=False, precomputed_delta=None, _mover=None):
1318
"""Apply all changes to the inventory and filesystem.
1320
If filesystem or inventory conflicts are present, MalformedTransform
1323
If apply succeeds, finalize is not necessary.
1325
:param no_conflicts: if True, the caller guarantees there are no
1326
conflicts, so no check is made.
1327
:param precomputed_delta: An inventory delta to use instead of
1329
:param _mover: Supply an alternate FileMover, for testing
1331
if not no_conflicts:
1332
conflicts = self.find_conflicts()
1333
if len(conflicts) != 0:
1334
raise MalformedTransform(conflicts=conflicts)
1335
child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
1337
if precomputed_delta is None:
1338
child_pb.update('Apply phase', 0, 2)
1339
inventory_delta = self._generate_inventory_delta()
1342
inventory_delta = precomputed_delta
1345
mover = _FileMover()
1349
child_pb.update('Apply phase', 0 + offset, 2 + offset)
1350
self._apply_removals(mover)
1351
child_pb.update('Apply phase', 1 + offset, 2 + offset)
1352
modified_paths = self._apply_insertions(mover)
1357
mover.apply_deletions()
1360
self._tree.apply_inventory_delta(inventory_delta)
1363
return _TransformResults(modified_paths, self.rename_count)
1365
def _generate_inventory_delta(self):
1366
"""Generate an inventory delta for the current transform."""
1367
inventory_delta = []
1368
child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
1369
new_paths = self._inventory_altered()
1370
total_entries = len(new_paths) + len(self._removed_id)
1372
for num, trans_id in enumerate(self._removed_id):
1374
child_pb.update('removing file', num, total_entries)
1375
if trans_id == self._new_root:
1376
file_id = self._tree.get_root_id()
1378
file_id = self.tree_file_id(trans_id)
1379
# File-id isn't really being deleted, just moved
1380
if file_id in self._r_new_id:
1382
path = self._tree_id_paths[trans_id]
1383
inventory_delta.append((path, None, file_id, None))
1384
new_path_file_ids = dict((t, self.final_file_id(t)) for p, t in
1386
entries = self._tree.iter_entries_by_dir(
1387
new_path_file_ids.values())
1388
old_paths = dict((e.file_id, p) for p, e in entries)
1390
for num, (path, trans_id) in enumerate(new_paths):
1392
child_pb.update('adding file',
1393
num + len(self._removed_id), total_entries)
1394
file_id = new_path_file_ids[trans_id]
1399
kind = self.final_kind(trans_id)
1401
kind = self._tree.stored_kind(file_id)
1402
parent_trans_id = self.final_parent(trans_id)
1403
parent_file_id = new_path_file_ids.get(parent_trans_id)
1404
if parent_file_id is None:
1405
parent_file_id = self.final_file_id(parent_trans_id)
1406
if trans_id in self._new_reference_revision:
1407
new_entry = inventory.TreeReference(
1409
self._new_name[trans_id],
1410
self.final_file_id(self._new_parent[trans_id]),
1411
None, self._new_reference_revision[trans_id])
1413
new_entry = inventory.make_entry(kind,
1414
self.final_name(trans_id),
1415
parent_file_id, file_id)
1416
old_path = old_paths.get(new_entry.file_id)
1417
new_executability = self._new_executability.get(trans_id)
1418
if new_executability is not None:
1419
new_entry.executable = new_executability
1420
inventory_delta.append(
1421
(old_path, path, new_entry.file_id, new_entry))
1424
return inventory_delta
1426
def _apply_removals(self, mover):
1427
"""Perform tree operations that remove directory/inventory names.
1429
That is, delete files that are to be deleted, and put any files that
1430
need renaming into limbo. This must be done in strict child-to-parent
1433
If inventory_delta is None, no inventory delta generation is performed.
1435
tree_paths = list(self._tree_path_ids.iteritems())
1436
tree_paths.sort(reverse=True)
1437
child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
1439
for num, data in enumerate(tree_paths):
1440
path, trans_id = data
1441
child_pb.update('removing file', num, len(tree_paths))
1442
full_path = self._tree.abspath(path)
1443
if trans_id in self._removed_contents:
1444
mover.pre_delete(full_path, os.path.join(self._deletiondir,
1446
elif trans_id in self._new_name or trans_id in \
1449
mover.rename(full_path, self._limbo_name(trans_id))
1451
if e.errno != errno.ENOENT:
1454
self.rename_count += 1
1458
def _apply_insertions(self, mover):
1459
"""Perform tree operations that insert directory/inventory names.
1461
That is, create any files that need to be created, and restore from
1462
limbo any files that needed renaming. This must be done in strict
1463
parent-to-child order.
1465
If inventory_delta is None, no inventory delta is calculated, and
1466
no list of modified paths is returned.
1468
new_paths = self.new_paths(filesystem_only=True)
1470
new_path_file_ids = dict((t, self.final_file_id(t)) for p, t in
1472
child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
1474
for num, (path, trans_id) in enumerate(new_paths):
1476
child_pb.update('adding file', num, len(new_paths))
1477
full_path = self._tree.abspath(path)
1478
if trans_id in self._needs_rename:
1480
mover.rename(self._limbo_name(trans_id), full_path)
1482
# We may be renaming a dangling inventory id
1483
if e.errno != errno.ENOENT:
1486
self.rename_count += 1
1487
if (trans_id in self._new_contents or
1488
self.path_changed(trans_id)):
1489
if trans_id in self._new_contents:
1490
modified_paths.append(full_path)
1491
if trans_id in self._new_executability:
1492
self._set_executability(path, trans_id)
1495
self._new_contents.clear()
1496
return modified_paths
1499
class TransformPreview(TreeTransformBase):
1500
"""A TreeTransform for generating preview trees.
1502
Unlike TreeTransform, this version works when the input tree is a
1503
RevisionTree, rather than a WorkingTree. As a result, it tends to ignore
1504
unversioned files in the input tree.
1507
def __init__(self, tree, pb=DummyProgress(), case_sensitive=True):
1509
limbodir = osutils.mkdtemp(prefix='bzr-limbo-')
1510
TreeTransformBase.__init__(self, tree, limbodir, pb, case_sensitive)
1512
def canonical_path(self, path):
1515
def tree_kind(self, trans_id):
1516
path = self._tree_id_paths.get(trans_id)
1518
raise NoSuchFile(None)
1519
file_id = self._tree.path2id(path)
1520
return self._tree.kind(file_id)
1522
def _set_mode(self, trans_id, mode_id, typefunc):
1523
"""Set the mode of new file contents.
1524
The mode_id is the existing file to get the mode from (often the same
1525
as trans_id). The operation is only performed if there's a mode match
1526
according to typefunc.
1528
# is it ok to ignore this? probably
1531
def iter_tree_children(self, parent_id):
1532
"""Iterate through the entry's tree children, if any"""
1534
path = self._tree_id_paths[parent_id]
1537
file_id = self.tree_file_id(parent_id)
1540
entry = self._tree.iter_entries_by_dir([file_id]).next()[1]
1541
children = getattr(entry, 'children', {})
1542
for child in children:
1543
childpath = joinpath(path, child)
1544
yield self.trans_id_tree_path(childpath)
1547
class _PreviewTree(tree.Tree):
1548
"""Partial implementation of Tree to support show_diff_trees"""
1550
def __init__(self, transform):
1551
self._transform = transform
1552
self._final_paths = FinalPaths(transform)
1553
self.__by_parent = None
1554
self._parent_ids = []
1555
self._all_children_cache = {}
1556
self._path2trans_id_cache = {}
1557
self._final_name_cache = {}
1559
def _changes(self, file_id):
1560
for changes in self._transform.iter_changes():
1561
if changes[0] == file_id:
1564
def _content_change(self, file_id):
1565
"""Return True if the content of this file changed"""
1566
changes = self._changes(file_id)
1567
# changes[2] is true if the file content changed. See
1568
# InterTree.iter_changes.
1569
return (changes is not None and changes[2])
1571
def _get_repository(self):
1572
repo = getattr(self._transform._tree, '_repository', None)
1574
repo = self._transform._tree.branch.repository
1577
def _iter_parent_trees(self):
1578
for revision_id in self.get_parent_ids():
1580
yield self.revision_tree(revision_id)
1581
except errors.NoSuchRevisionInTree:
1582
yield self._get_repository().revision_tree(revision_id)
1584
def _get_file_revision(self, file_id, vf, tree_revision):
1585
parent_keys = [(file_id, self._file_revision(t, file_id)) for t in
1586
self._iter_parent_trees()]
1587
vf.add_lines((file_id, tree_revision), parent_keys,
1588
self.get_file(file_id).readlines())
1589
repo = self._get_repository()
1590
base_vf = repo.texts
1591
if base_vf not in vf.fallback_versionedfiles:
1592
vf.fallback_versionedfiles.append(base_vf)
1593
return tree_revision
1595
def _stat_limbo_file(self, file_id):
1596
trans_id = self._transform.trans_id_file_id(file_id)
1597
name = self._transform._limbo_name(trans_id)
1598
return os.lstat(name)
1601
def _by_parent(self):
1602
if self.__by_parent is None:
1603
self.__by_parent = self._transform.by_parent()
1604
return self.__by_parent
1606
def _comparison_data(self, entry, path):
1607
kind, size, executable, link_or_sha1 = self.path_content_summary(path)
1608
if kind == 'missing':
1612
file_id = self._transform.final_file_id(self._path2trans_id(path))
1613
executable = self.is_executable(file_id, path)
1614
return kind, executable, None
1616
def lock_read(self):
1617
# Perhaps in theory, this should lock the TreeTransform?
1624
def inventory(self):
1625
"""This Tree does not use inventory as its backing data."""
1626
raise NotImplementedError(_PreviewTree.inventory)
1628
def get_root_id(self):
1629
return self._transform.final_file_id(self._transform.root)
1631
def all_file_ids(self):
1632
tree_ids = set(self._transform._tree.all_file_ids())
1633
tree_ids.difference_update(self._transform.tree_file_id(t)
1634
for t in self._transform._removed_id)
1635
tree_ids.update(self._transform._new_id.values())
1639
return iter(self.all_file_ids())
1641
def has_id(self, file_id):
1642
if file_id in self._transform._r_new_id:
1644
elif file_id in self._transform._removed_id:
1647
return self._transform._tree.has_id(file_id)
1649
def _path2trans_id(self, path):
1650
# We must not use None here, because that is a valid value to store.
1651
trans_id = self._path2trans_id_cache.get(path, object)
1652
if trans_id is not object:
1654
segments = splitpath(path)
1655
cur_parent = self._transform.root
1656
for cur_segment in segments:
1657
for child in self._all_children(cur_parent):
1658
final_name = self._final_name_cache.get(child)
1659
if final_name is None:
1660
final_name = self._transform.final_name(child)
1661
self._final_name_cache[child] = final_name
1662
if final_name == cur_segment:
1666
self._path2trans_id_cache[path] = None
1668
self._path2trans_id_cache[path] = cur_parent
1671
def path2id(self, path):
1672
return self._transform.final_file_id(self._path2trans_id(path))
1674
def id2path(self, file_id):
1675
trans_id = self._transform.trans_id_file_id(file_id)
1677
return self._final_paths._determine_path(trans_id)
1679
raise errors.NoSuchId(self, file_id)
1681
def _all_children(self, trans_id):
1682
children = self._all_children_cache.get(trans_id)
1683
if children is not None:
1685
children = set(self._transform.iter_tree_children(trans_id))
1686
# children in the _new_parent set are provided by _by_parent.
1687
children.difference_update(self._transform._new_parent.keys())
1688
children.update(self._by_parent.get(trans_id, []))
1689
self._all_children_cache[trans_id] = children
1692
def iter_children(self, file_id):
1693
trans_id = self._transform.trans_id_file_id(file_id)
1694
for child_trans_id in self._all_children(trans_id):
1695
yield self._transform.final_file_id(child_trans_id)
1698
possible_extras = set(self._transform.trans_id_tree_path(p) for p
1699
in self._transform._tree.extras())
1700
possible_extras.update(self._transform._new_contents)
1701
possible_extras.update(self._transform._removed_id)
1702
for trans_id in possible_extras:
1703
if self._transform.final_file_id(trans_id) is None:
1704
yield self._final_paths._determine_path(trans_id)
1706
def _make_inv_entries(self, ordered_entries, specific_file_ids):
1707
for trans_id, parent_file_id in ordered_entries:
1708
file_id = self._transform.final_file_id(trans_id)
1711
if (specific_file_ids is not None
1712
and file_id not in specific_file_ids):
1715
kind = self._transform.final_kind(trans_id)
1717
kind = self._transform._tree.stored_kind(file_id)
1718
new_entry = inventory.make_entry(
1720
self._transform.final_name(trans_id),
1721
parent_file_id, file_id)
1722
yield new_entry, trans_id
1724
def _list_files_by_dir(self):
1725
todo = [ROOT_PARENT]
1727
while len(todo) > 0:
1729
parent_file_id = self._transform.final_file_id(parent)
1730
children = list(self._all_children(parent))
1731
paths = dict(zip(children, self._final_paths.get_paths(children)))
1732
children.sort(key=paths.get)
1733
todo.extend(reversed(children))
1734
for trans_id in children:
1735
ordered_ids.append((trans_id, parent_file_id))
1738
def iter_entries_by_dir(self, specific_file_ids=None):
1739
# This may not be a maximally efficient implementation, but it is
1740
# reasonably straightforward. An implementation that grafts the
1741
# TreeTransform changes onto the tree's iter_entries_by_dir results
1742
# might be more efficient, but requires tricky inferences about stack
1744
ordered_ids = self._list_files_by_dir()
1745
for entry, trans_id in self._make_inv_entries(ordered_ids,
1747
yield unicode(self._final_paths.get_path(trans_id)), entry
1749
def list_files(self, include_root=False):
1750
"""See Tree.list_files."""
1751
# XXX This should behave like WorkingTree.list_files, but is really
1752
# more like RevisionTree.list_files.
1753
for path, entry in self.iter_entries_by_dir():
1754
if entry.name == '' and not include_root:
1756
yield path, 'V', entry.kind, entry.file_id, entry
1758
def kind(self, file_id):
1759
trans_id = self._transform.trans_id_file_id(file_id)
1760
return self._transform.final_kind(trans_id)
1762
def stored_kind(self, file_id):
1763
trans_id = self._transform.trans_id_file_id(file_id)
1765
return self._transform._new_contents[trans_id]
1767
return self._transform._tree.stored_kind(file_id)
1769
def get_file_mtime(self, file_id, path=None):
1770
"""See Tree.get_file_mtime"""
1771
if not self._content_change(file_id):
1772
return self._transform._tree.get_file_mtime(file_id, path)
1773
return self._stat_limbo_file(file_id).st_mtime
1775
def _file_size(self, entry, stat_value):
1776
return self.get_file_size(entry.file_id)
1778
def get_file_size(self, file_id):
1779
"""See Tree.get_file_size"""
1780
if self.kind(file_id) == 'file':
1781
return self._transform._tree.get_file_size(file_id)
1785
def get_file_sha1(self, file_id, path=None, stat_value=None):
1786
trans_id = self._transform.trans_id_file_id(file_id)
1787
kind = self._transform._new_contents.get(trans_id)
1789
return self._transform._tree.get_file_sha1(file_id)
1791
fileobj = self.get_file(file_id)
1793
return sha_file(fileobj)
1797
def is_executable(self, file_id, path=None):
1800
trans_id = self._transform.trans_id_file_id(file_id)
1802
return self._transform._new_executability[trans_id]
1805
return self._transform._tree.is_executable(file_id, path)
1807
if e.errno == errno.ENOENT:
1810
except errors.NoSuchId:
1813
def path_content_summary(self, path):
1814
trans_id = self._path2trans_id(path)
1815
tt = self._transform
1816
tree_path = tt._tree_id_paths.get(trans_id)
1817
kind = tt._new_contents.get(trans_id)
1819
if tree_path is None or trans_id in tt._removed_contents:
1820
return 'missing', None, None, None
1821
summary = tt._tree.path_content_summary(tree_path)
1822
kind, size, executable, link_or_sha1 = summary
1825
limbo_name = tt._limbo_name(trans_id)
1826
if trans_id in tt._new_reference_revision:
1827
kind = 'tree-reference'
1829
statval = os.lstat(limbo_name)
1830
size = statval.st_size
1831
if not supports_executable():
1834
executable = statval.st_mode & S_IEXEC
1838
if kind == 'symlink':
1839
link_or_sha1 = os.readlink(limbo_name)
1840
if supports_executable():
1841
executable = tt._new_executability.get(trans_id, executable)
1842
return kind, size, executable, link_or_sha1
1844
def iter_changes(self, from_tree, include_unchanged=False,
1845
specific_files=None, pb=None, extra_trees=None,
1846
require_versioned=True, want_unversioned=False):
1847
"""See InterTree.iter_changes.
1849
This has a fast path that is only used when the from_tree matches
1850
the transform tree, and no fancy options are supplied.
1852
if (from_tree is not self._transform._tree or include_unchanged or
1853
specific_files or want_unversioned):
1854
return tree.InterTree(from_tree, self).iter_changes(
1855
include_unchanged=include_unchanged,
1856
specific_files=specific_files,
1858
extra_trees=extra_trees,
1859
require_versioned=require_versioned,
1860
want_unversioned=want_unversioned)
1861
if want_unversioned:
1862
raise ValueError('want_unversioned is not supported')
1863
return self._transform.iter_changes()
1865
def get_file(self, file_id, path=None):
1866
"""See Tree.get_file"""
1867
if not self._content_change(file_id):
1868
return self._transform._tree.get_file(file_id, path)
1869
trans_id = self._transform.trans_id_file_id(file_id)
1870
name = self._transform._limbo_name(trans_id)
1871
return open(name, 'rb')
1873
def get_file_text(self, file_id):
1874
text_file = self.get_file(file_id)
1876
return text_file.read()
1880
def annotate_iter(self, file_id,
1881
default_revision=_mod_revision.CURRENT_REVISION):
1882
changes = self._changes(file_id)
1886
changed_content, versioned, kind = (changes[2], changes[3],
1890
get_old = (kind[0] == 'file' and versioned[0])
1892
old_annotation = self._transform._tree.annotate_iter(file_id,
1893
default_revision=default_revision)
1897
return old_annotation
1898
if not changed_content:
1899
return old_annotation
1900
return annotate.reannotate([old_annotation],
1901
self.get_file(file_id).readlines(),
1904
def get_symlink_target(self, file_id):
1905
"""See Tree.get_symlink_target"""
1906
if not self._content_change(file_id):
1907
return self._transform._tree.get_symlink_target(file_id)
1908
trans_id = self._transform.trans_id_file_id(file_id)
1909
name = self._transform._limbo_name(trans_id)
1910
return os.readlink(name)
1912
def walkdirs(self, prefix=''):
1913
pending = [self._transform.root]
1914
while len(pending) > 0:
1915
parent_id = pending.pop()
1918
prefix = prefix.rstrip('/')
1919
parent_path = self._final_paths.get_path(parent_id)
1920
parent_file_id = self._transform.final_file_id(parent_id)
1921
for child_id in self._all_children(parent_id):
1922
path_from_root = self._final_paths.get_path(child_id)
1923
basename = self._transform.final_name(child_id)
1924
file_id = self._transform.final_file_id(child_id)
1926
kind = self._transform.final_kind(child_id)
1927
versioned_kind = kind
1930
versioned_kind = self._transform._tree.stored_kind(file_id)
1931
if versioned_kind == 'directory':
1932
subdirs.append(child_id)
1933
children.append((path_from_root, basename, kind, None,
1934
file_id, versioned_kind))
1936
if parent_path.startswith(prefix):
1937
yield (parent_path, parent_file_id), children
1938
pending.extend(sorted(subdirs, key=self._final_paths.get_path,
1941
def get_parent_ids(self):
1942
return self._parent_ids
1944
def set_parent_ids(self, parent_ids):
1945
self._parent_ids = parent_ids
1947
def get_revision_tree(self, revision_id):
1948
return self._transform._tree.get_revision_tree(revision_id)
1951
def joinpath(parent, child):
1952
"""Join tree-relative paths, handling the tree root specially"""
1953
if parent is None or parent == "":
1956
return pathjoin(parent, child)
1959
class FinalPaths(object):
1960
"""Make path calculation cheap by memoizing paths.
1962
The underlying tree must not be manipulated between calls, or else
1963
the results will likely be incorrect.
1965
def __init__(self, transform):
1966
object.__init__(self)
1967
self._known_paths = {}
1968
self.transform = transform
1970
def _determine_path(self, trans_id):
1971
if trans_id == self.transform.root:
1973
name = self.transform.final_name(trans_id)
1974
parent_id = self.transform.final_parent(trans_id)
1975
if parent_id == self.transform.root:
1978
return pathjoin(self.get_path(parent_id), name)
1980
def get_path(self, trans_id):
1981
"""Find the final path associated with a trans_id"""
1982
if trans_id not in self._known_paths:
1983
self._known_paths[trans_id] = self._determine_path(trans_id)
1984
return self._known_paths[trans_id]
1986
def get_paths(self, trans_ids):
1987
return [(self.get_path(t), t) for t in trans_ids]
1991
def topology_sorted_ids(tree):
1992
"""Determine the topological order of the ids in a tree"""
1993
file_ids = list(tree)
1994
file_ids.sort(key=tree.id2path)
1998
def build_tree(tree, wt, accelerator_tree=None, hardlink=False,
1999
delta_from_tree=False):
2000
"""Create working tree for a branch, using a TreeTransform.
2002
This function should be used on empty trees, having a tree root at most.
2003
(see merge and revert functionality for working with existing trees)
2005
Existing files are handled like so:
2007
- Existing bzrdirs take precedence over creating new items. They are
2008
created as '%s.diverted' % name.
2009
- Otherwise, if the content on disk matches the content we are building,
2010
it is silently replaced.
2011
- Otherwise, conflict resolution will move the old file to 'oldname.moved'.
2013
:param tree: The tree to convert wt into a copy of
2014
:param wt: The working tree that files will be placed into
2015
:param accelerator_tree: A tree which can be used for retrieving file
2016
contents more quickly than tree itself, i.e. a workingtree. tree
2017
will be used for cases where accelerator_tree's content is different.
2018
:param hardlink: If true, hard-link files to accelerator_tree, where
2019
possible. accelerator_tree must implement abspath, i.e. be a
2021
:param delta_from_tree: If true, build_tree may use the input Tree to
2022
generate the inventory delta.
2024
wt.lock_tree_write()
2028
if accelerator_tree is not None:
2029
accelerator_tree.lock_read()
2031
return _build_tree(tree, wt, accelerator_tree, hardlink,
2034
if accelerator_tree is not None:
2035
accelerator_tree.unlock()
2042
def _build_tree(tree, wt, accelerator_tree, hardlink, delta_from_tree):
2043
"""See build_tree."""
2044
for num, _unused in enumerate(wt.all_file_ids()):
2045
if num > 0: # more than just a root
2046
raise errors.WorkingTreeAlreadyPopulated(base=wt.basedir)
2047
existing_files = set()
2048
for dir, files in wt.walkdirs():
2049
existing_files.update(f[0] for f in files)
2051
top_pb = bzrlib.ui.ui_factory.nested_progress_bar()
2052
pp = ProgressPhase("Build phase", 2, top_pb)
2053
if tree.inventory.root is not None:
2054
# This is kind of a hack: we should be altering the root
2055
# as part of the regular tree shape diff logic.
2056
# The conditional test here is to avoid doing an
2057
# expensive operation (flush) every time the root id
2058
# is set within the tree, nor setting the root and thus
2059
# marking the tree as dirty, because we use two different
2060
# idioms here: tree interfaces and inventory interfaces.
2061
if wt.get_root_id() != tree.get_root_id():
2062
wt.set_root_id(tree.get_root_id())
2064
tt = TreeTransform(wt)
2068
file_trans_id[wt.get_root_id()] = \
2069
tt.trans_id_tree_file_id(wt.get_root_id())
2070
pb = bzrlib.ui.ui_factory.nested_progress_bar()
2072
deferred_contents = []
2074
total = len(tree.inventory)
2076
precomputed_delta = []
2078
precomputed_delta = None
2079
for num, (tree_path, entry) in \
2080
enumerate(tree.inventory.iter_entries_by_dir()):
2081
pb.update("Building tree", num - len(deferred_contents), total)
2082
if entry.parent_id is None:
2085
file_id = entry.file_id
2087
precomputed_delta.append((None, tree_path, file_id, entry))
2088
if tree_path in existing_files:
2089
target_path = wt.abspath(tree_path)
2090
kind = file_kind(target_path)
2091
if kind == "directory":
2093
bzrdir.BzrDir.open(target_path)
2094
except errors.NotBranchError:
2098
if (file_id not in divert and
2099
_content_match(tree, entry, file_id, kind,
2101
tt.delete_contents(tt.trans_id_tree_path(tree_path))
2102
if kind == 'directory':
2104
parent_id = file_trans_id[entry.parent_id]
2105
if entry.kind == 'file':
2106
# We *almost* replicate new_by_entry, so that we can defer
2107
# getting the file text, and get them all at once.
2108
trans_id = tt.create_path(entry.name, parent_id)
2109
file_trans_id[file_id] = trans_id
2110
tt.version_file(file_id, trans_id)
2111
executable = tree.is_executable(file_id, tree_path)
2113
tt.set_executability(executable, trans_id)
2114
deferred_contents.append((file_id, trans_id))
2116
file_trans_id[file_id] = new_by_entry(tt, entry, parent_id,
2119
new_trans_id = file_trans_id[file_id]
2120
old_parent = tt.trans_id_tree_path(tree_path)
2121
_reparent_children(tt, old_parent, new_trans_id)
2122
offset = num + 1 - len(deferred_contents)
2123
_create_files(tt, tree, deferred_contents, pb, offset,
2124
accelerator_tree, hardlink)
2128
divert_trans = set(file_trans_id[f] for f in divert)
2129
resolver = lambda t, c: resolve_checkout(t, c, divert_trans)
2130
raw_conflicts = resolve_conflicts(tt, pass_func=resolver)
2131
if len(raw_conflicts) > 0:
2132
precomputed_delta = None
2133
conflicts = cook_conflicts(raw_conflicts, tt)
2134
for conflict in conflicts:
2137
wt.add_conflicts(conflicts)
2138
except errors.UnsupportedOperation:
2140
result = tt.apply(no_conflicts=True,
2141
precomputed_delta=precomputed_delta)
2148
def _create_files(tt, tree, desired_files, pb, offset, accelerator_tree,
2150
total = len(desired_files) + offset
2151
if accelerator_tree is None:
2152
new_desired_files = desired_files
2154
iter = accelerator_tree.iter_changes(tree, include_unchanged=True)
2155
unchanged = dict((f, p[1]) for (f, p, c, v, d, n, k, e)
2156
in iter if not (c or e[0] != e[1]))
2157
new_desired_files = []
2159
for file_id, trans_id in desired_files:
2160
accelerator_path = unchanged.get(file_id)
2161
if accelerator_path is None:
2162
new_desired_files.append((file_id, trans_id))
2164
pb.update('Adding file contents', count + offset, total)
2166
tt.create_hardlink(accelerator_tree.abspath(accelerator_path),
2169
contents = accelerator_tree.get_file(file_id, accelerator_path)
2171
tt.create_file(contents, trans_id)
2176
for count, (trans_id, contents) in enumerate(tree.iter_files_bytes(
2177
new_desired_files)):
2178
tt.create_file(contents, trans_id)
2179
pb.update('Adding file contents', count + offset, total)
2182
def _reparent_children(tt, old_parent, new_parent):
2183
for child in tt.iter_tree_children(old_parent):
2184
tt.adjust_path(tt.final_name(child), new_parent, child)
2186
def _reparent_transform_children(tt, old_parent, new_parent):
2187
by_parent = tt.by_parent()
2188
for child in by_parent[old_parent]:
2189
tt.adjust_path(tt.final_name(child), new_parent, child)
2190
return by_parent[old_parent]
2192
def _content_match(tree, entry, file_id, kind, target_path):
2193
if entry.kind != kind:
2195
if entry.kind == "directory":
2197
if entry.kind == "file":
2198
if tree.get_file(file_id).read() == file(target_path, 'rb').read():
2200
elif entry.kind == "symlink":
2201
if tree.get_symlink_target(file_id) == os.readlink(target_path):
2206
def resolve_checkout(tt, conflicts, divert):
2207
new_conflicts = set()
2208
for c_type, conflict in ((c[0], c) for c in conflicts):
2209
# Anything but a 'duplicate' would indicate programmer error
2210
if c_type != 'duplicate':
2211
raise AssertionError(c_type)
2212
# Now figure out which is new and which is old
2213
if tt.new_contents(conflict[1]):
2214
new_file = conflict[1]
2215
old_file = conflict[2]
2217
new_file = conflict[2]
2218
old_file = conflict[1]
2220
# We should only get here if the conflict wasn't completely
2222
final_parent = tt.final_parent(old_file)
2223
if new_file in divert:
2224
new_name = tt.final_name(old_file)+'.diverted'
2225
tt.adjust_path(new_name, final_parent, new_file)
2226
new_conflicts.add((c_type, 'Diverted to',
2227
new_file, old_file))
2229
new_name = tt.final_name(old_file)+'.moved'
2230
tt.adjust_path(new_name, final_parent, old_file)
2231
new_conflicts.add((c_type, 'Moved existing file to',
2232
old_file, new_file))
2233
return new_conflicts
2236
def new_by_entry(tt, entry, parent_id, tree):
2237
"""Create a new file according to its inventory entry"""
2241
contents = tree.get_file(entry.file_id).readlines()
2242
executable = tree.is_executable(entry.file_id)
2243
return tt.new_file(name, parent_id, contents, entry.file_id,
2245
elif kind in ('directory', 'tree-reference'):
2246
trans_id = tt.new_directory(name, parent_id, entry.file_id)
2247
if kind == 'tree-reference':
2248
tt.set_tree_reference(entry.reference_revision, trans_id)
2250
elif kind == 'symlink':
2251
target = tree.get_symlink_target(entry.file_id)
2252
return tt.new_symlink(name, parent_id, target, entry.file_id)
2254
raise errors.BadFileKindError(name, kind)
2257
@deprecated_function(deprecated_in((1, 9, 0)))
2258
def create_by_entry(tt, entry, tree, trans_id, lines=None, mode_id=None):
2259
"""Create new file contents according to an inventory entry.
2261
DEPRECATED. Use create_from_tree instead.
2263
if entry.kind == "file":
2265
lines = tree.get_file(entry.file_id).readlines()
2266
tt.create_file(lines, trans_id, mode_id=mode_id)
2267
elif entry.kind == "symlink":
2268
tt.create_symlink(tree.get_symlink_target(entry.file_id), trans_id)
2269
elif entry.kind == "directory":
2270
tt.create_directory(trans_id)
2273
def create_from_tree(tt, trans_id, tree, file_id, bytes=None):
2274
"""Create new file contents according to tree contents."""
2275
kind = tree.kind(file_id)
2276
if kind == 'directory':
2277
tt.create_directory(trans_id)
2278
elif kind == "file":
2280
tree_file = tree.get_file(file_id)
2282
bytes = tree_file.readlines()
2285
tt.create_file(bytes, trans_id)
2286
elif kind == "symlink":
2287
tt.create_symlink(tree.get_symlink_target(file_id), trans_id)
2289
raise AssertionError('Unknown kind %r' % kind)
2292
def create_entry_executability(tt, entry, trans_id):
2293
"""Set the executability of a trans_id according to an inventory entry"""
2294
if entry.kind == "file":
2295
tt.set_executability(entry.executable, trans_id)
2298
def get_backup_name(entry, by_parent, parent_trans_id, tt):
2299
return _get_backup_name(entry.name, by_parent, parent_trans_id, tt)
2302
def _get_backup_name(name, by_parent, parent_trans_id, tt):
2303
"""Produce a backup-style name that appears to be available"""
2307
yield "%s.~%d~" % (name, counter)
2309
for new_name in name_gen():
2310
if not tt.has_named_child(by_parent, parent_trans_id, new_name):
2314
def _entry_changes(file_id, entry, working_tree):
2315
"""Determine in which ways the inventory entry has changed.
2317
Returns booleans: has_contents, content_mod, meta_mod
2318
has_contents means there are currently contents, but they differ
2319
contents_mod means contents need to be modified
2320
meta_mod means the metadata needs to be modified
2322
cur_entry = working_tree.inventory[file_id]
2324
working_kind = working_tree.kind(file_id)
2327
has_contents = False
2330
if has_contents is True:
2331
if entry.kind != working_kind:
2332
contents_mod, meta_mod = True, False
2334
cur_entry._read_tree_state(working_tree.id2path(file_id),
2336
contents_mod, meta_mod = entry.detect_changes(cur_entry)
2337
cur_entry._forget_tree_state()
2338
return has_contents, contents_mod, meta_mod
2341
def revert(working_tree, target_tree, filenames, backups=False,
2342
pb=DummyProgress(), change_reporter=None):
2343
"""Revert a working tree's contents to those of a target tree."""
2344
target_tree.lock_read()
2345
tt = TreeTransform(working_tree, pb)
2347
pp = ProgressPhase("Revert phase", 3, pb)
2348
conflicts, merge_modified = _prepare_revert_transform(
2349
working_tree, target_tree, tt, filenames, backups, pp)
2351
change_reporter = delta._ChangeReporter(
2352
unversioned_filter=working_tree.is_ignored)
2353
delta.report_changes(tt.iter_changes(), change_reporter)
2354
for conflict in conflicts:
2358
working_tree.set_merge_modified(merge_modified)
2360
target_tree.unlock()
2366
def _prepare_revert_transform(working_tree, target_tree, tt, filenames,
2367
backups, pp, basis_tree=None,
2368
merge_modified=None):
2370
child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
2372
if merge_modified is None:
2373
merge_modified = working_tree.merge_modified()
2374
merge_modified = _alter_files(working_tree, target_tree, tt,
2375
child_pb, filenames, backups,
2376
merge_modified, basis_tree)
2380
child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
2382
raw_conflicts = resolve_conflicts(tt, child_pb,
2383
lambda t, c: conflict_pass(t, c, target_tree))
2386
conflicts = cook_conflicts(raw_conflicts, tt)
2387
return conflicts, merge_modified
2390
def _alter_files(working_tree, target_tree, tt, pb, specific_files,
2391
backups, merge_modified, basis_tree=None):
2392
if basis_tree is not None:
2393
basis_tree.lock_read()
2394
change_list = target_tree.iter_changes(working_tree,
2395
specific_files=specific_files, pb=pb)
2396
if target_tree.get_root_id() is None:
2402
for id_num, (file_id, path, changed_content, versioned, parent, name,
2403
kind, executable) in enumerate(change_list):
2404
if skip_root and file_id[0] is not None and parent[0] is None:
2406
trans_id = tt.trans_id_file_id(file_id)
2409
keep_content = False
2410
if kind[0] == 'file' and (backups or kind[1] is None):
2411
wt_sha1 = working_tree.get_file_sha1(file_id)
2412
if merge_modified.get(file_id) != wt_sha1:
2413
# acquire the basis tree lazily to prevent the
2414
# expense of accessing it when it's not needed ?
2415
# (Guessing, RBC, 200702)
2416
if basis_tree is None:
2417
basis_tree = working_tree.basis_tree()
2418
basis_tree.lock_read()
2419
if file_id in basis_tree:
2420
if wt_sha1 != basis_tree.get_file_sha1(file_id):
2422
elif kind[1] is None and not versioned[1]:
2424
if kind[0] is not None:
2425
if not keep_content:
2426
tt.delete_contents(trans_id)
2427
elif kind[1] is not None:
2428
parent_trans_id = tt.trans_id_file_id(parent[0])
2429
by_parent = tt.by_parent()
2430
backup_name = _get_backup_name(name[0], by_parent,
2431
parent_trans_id, tt)
2432
tt.adjust_path(backup_name, parent_trans_id, trans_id)
2433
new_trans_id = tt.create_path(name[0], parent_trans_id)
2434
if versioned == (True, True):
2435
tt.unversion_file(trans_id)
2436
tt.version_file(file_id, new_trans_id)
2437
# New contents should have the same unix perms as old
2440
trans_id = new_trans_id
2441
if kind[1] in ('directory', 'tree-reference'):
2442
tt.create_directory(trans_id)
2443
if kind[1] == 'tree-reference':
2444
revision = target_tree.get_reference_revision(file_id,
2446
tt.set_tree_reference(revision, trans_id)
2447
elif kind[1] == 'symlink':
2448
tt.create_symlink(target_tree.get_symlink_target(file_id),
2450
elif kind[1] == 'file':
2451
deferred_files.append((file_id, (trans_id, mode_id)))
2452
if basis_tree is None:
2453
basis_tree = working_tree.basis_tree()
2454
basis_tree.lock_read()
2455
new_sha1 = target_tree.get_file_sha1(file_id)
2456
if (file_id in basis_tree and new_sha1 ==
2457
basis_tree.get_file_sha1(file_id)):
2458
if file_id in merge_modified:
2459
del merge_modified[file_id]
2461
merge_modified[file_id] = new_sha1
2463
# preserve the execute bit when backing up
2464
if keep_content and executable[0] == executable[1]:
2465
tt.set_executability(executable[1], trans_id)
2466
elif kind[1] is not None:
2467
raise AssertionError(kind[1])
2468
if versioned == (False, True):
2469
tt.version_file(file_id, trans_id)
2470
if versioned == (True, False):
2471
tt.unversion_file(trans_id)
2472
if (name[1] is not None and
2473
(name[0] != name[1] or parent[0] != parent[1])):
2474
if name[1] == '' and parent[1] is None:
2475
parent_trans = ROOT_PARENT
2477
parent_trans = tt.trans_id_file_id(parent[1])
2478
tt.adjust_path(name[1], parent_trans, trans_id)
2479
if executable[0] != executable[1] and kind[1] == "file":
2480
tt.set_executability(executable[1], trans_id)
2481
for (trans_id, mode_id), bytes in target_tree.iter_files_bytes(
2483
tt.create_file(bytes, trans_id, mode_id)
2485
if basis_tree is not None:
2487
return merge_modified
2490
def resolve_conflicts(tt, pb=DummyProgress(), pass_func=None):
2491
"""Make many conflict-resolution attempts, but die if they fail"""
2492
if pass_func is None:
2493
pass_func = conflict_pass
2494
new_conflicts = set()
2497
pb.update('Resolution pass', n+1, 10)
2498
conflicts = tt.find_conflicts()
2499
if len(conflicts) == 0:
2500
return new_conflicts
2501
new_conflicts.update(pass_func(tt, conflicts))
2502
raise MalformedTransform(conflicts=conflicts)
2507
def conflict_pass(tt, conflicts, path_tree=None):
2508
"""Resolve some classes of conflicts.
2510
:param tt: The transform to resolve conflicts in
2511
:param conflicts: The conflicts to resolve
2512
:param path_tree: A Tree to get supplemental paths from
2514
new_conflicts = set()
2515
for c_type, conflict in ((c[0], c) for c in conflicts):
2516
if c_type == 'duplicate id':
2517
tt.unversion_file(conflict[1])
2518
new_conflicts.add((c_type, 'Unversioned existing file',
2519
conflict[1], conflict[2], ))
2520
elif c_type == 'duplicate':
2521
# files that were renamed take precedence
2522
final_parent = tt.final_parent(conflict[1])
2523
if tt.path_changed(conflict[1]):
2524
existing_file, new_file = conflict[2], conflict[1]
2526
existing_file, new_file = conflict[1], conflict[2]
2527
new_name = tt.final_name(existing_file)+'.moved'
2528
tt.adjust_path(new_name, final_parent, existing_file)
2529
new_conflicts.add((c_type, 'Moved existing file to',
2530
existing_file, new_file))
2531
elif c_type == 'parent loop':
2532
# break the loop by undoing one of the ops that caused the loop
2534
while not tt.path_changed(cur):
2535
cur = tt.final_parent(cur)
2536
new_conflicts.add((c_type, 'Cancelled move', cur,
2537
tt.final_parent(cur),))
2538
tt.adjust_path(tt.final_name(cur), tt.get_tree_parent(cur), cur)
2540
elif c_type == 'missing parent':
2541
trans_id = conflict[1]
2543
tt.cancel_deletion(trans_id)
2544
new_conflicts.add(('deleting parent', 'Not deleting',
2549
tt.final_name(trans_id)
2551
if path_tree is not None:
2552
file_id = tt.final_file_id(trans_id)
2554
file_id = tt.inactive_file_id(trans_id)
2555
entry = path_tree.inventory[file_id]
2556
# special-case the other tree root (move its
2557
# children to current root)
2558
if entry.parent_id is None:
2560
moved = _reparent_transform_children(
2561
tt, trans_id, tt.root)
2563
new_conflicts.add((c_type, 'Moved to root',
2566
parent_trans_id = tt.trans_id_file_id(
2568
tt.adjust_path(entry.name, parent_trans_id,
2571
tt.create_directory(trans_id)
2572
new_conflicts.add((c_type, 'Created directory', trans_id))
2573
elif c_type == 'unversioned parent':
2574
file_id = tt.inactive_file_id(conflict[1])
2575
# special-case the other tree root (move its children instead)
2576
if path_tree and file_id in path_tree:
2577
if path_tree.inventory[file_id].parent_id is None:
2579
tt.version_file(file_id, conflict[1])
2580
new_conflicts.add((c_type, 'Versioned directory', conflict[1]))
2581
elif c_type == 'non-directory parent':
2582
parent_id = conflict[1]
2583
parent_parent = tt.final_parent(parent_id)
2584
parent_name = tt.final_name(parent_id)
2585
parent_file_id = tt.final_file_id(parent_id)
2586
new_parent_id = tt.new_directory(parent_name + '.new',
2587
parent_parent, parent_file_id)
2588
_reparent_transform_children(tt, parent_id, new_parent_id)
2589
if parent_file_id is not None:
2590
tt.unversion_file(parent_id)
2591
new_conflicts.add((c_type, 'Created directory', new_parent_id))
2592
elif c_type == 'versioning no contents':
2593
tt.cancel_versioning(conflict[1])
2594
return new_conflicts
2597
def cook_conflicts(raw_conflicts, tt):
2598
"""Generate a list of cooked conflicts, sorted by file path"""
2599
from bzrlib.conflicts import Conflict
2600
conflict_iter = iter_cook_conflicts(raw_conflicts, tt)
2601
return sorted(conflict_iter, key=Conflict.sort_key)
2604
def iter_cook_conflicts(raw_conflicts, tt):
2605
from bzrlib.conflicts import Conflict
2607
for conflict in raw_conflicts:
2608
c_type = conflict[0]
2609
action = conflict[1]
2610
modified_path = fp.get_path(conflict[2])
2611
modified_id = tt.final_file_id(conflict[2])
2612
if len(conflict) == 3:
2613
yield Conflict.factory(c_type, action=action, path=modified_path,
2614
file_id=modified_id)
2617
conflicting_path = fp.get_path(conflict[3])
2618
conflicting_id = tt.final_file_id(conflict[3])
2619
yield Conflict.factory(c_type, action=action, path=modified_path,
2620
file_id=modified_id,
2621
conflict_path=conflicting_path,
2622
conflict_file_id=conflicting_id)
2625
class _FileMover(object):
2626
"""Moves and deletes files for TreeTransform, tracking operations"""
2629
self.past_renames = []
2630
self.pending_deletions = []
2632
def rename(self, from_, to):
2633
"""Rename a file from one path to another. Functions like os.rename"""
2635
os.rename(from_, to)
2637
if e.errno in (errno.EEXIST, errno.ENOTEMPTY):
2638
raise errors.FileExists(to, str(e))
2640
self.past_renames.append((from_, to))
2642
def pre_delete(self, from_, to):
2643
"""Rename a file out of the way and mark it for deletion.
2645
Unlike os.unlink, this works equally well for files and directories.
2646
:param from_: The current file path
2647
:param to: A temporary path for the file
2649
self.rename(from_, to)
2650
self.pending_deletions.append(to)
2653
"""Reverse all renames that have been performed"""
2654
for from_, to in reversed(self.past_renames):
2655
os.rename(to, from_)
2656
# after rollback, don't reuse _FileMover
2658
pending_deletions = None
2660
def apply_deletions(self):
2661
"""Apply all marked deletions"""
2662
for path in self.pending_deletions:
2664
# after apply_deletions, don't reuse _FileMover
2666
pending_deletions = None
added
removed
bzrlib/transform.py
