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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 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.filters import filtered_output_bytes, ContentFilterContext
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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 trans_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():
755
kind = self.final_kind(trans_id)
757
conflicts.append(('versioning no contents', trans_id))
759
if not InventoryEntry.versionable_kind(kind):
760
conflicts.append(('versioning bad kind', trans_id, kind))
763
def _executability_conflicts(self):
764
"""Check for bad executability changes.
766
Only versioned files may have their executability set, because
767
1. only versioned entries can have executability under windows
768
2. only files can be executable. (The execute bit on a directory
769
does not indicate searchability)
772
for trans_id in self._new_executability:
773
if self.final_file_id(trans_id) is None:
774
conflicts.append(('unversioned executability', trans_id))
777
non_file = self.final_kind(trans_id) != "file"
781
conflicts.append(('non-file executability', trans_id))
784
def _overwrite_conflicts(self):
785
"""Check for overwrites (not permitted on Win32)"""
787
for trans_id in self._new_contents:
789
self.tree_kind(trans_id)
792
if trans_id not in self._removed_contents:
793
conflicts.append(('overwrite', trans_id,
794
self.final_name(trans_id)))
797
def _duplicate_entries(self, by_parent):
798
"""No directory may have two entries with the same name."""
800
if (self._new_name, self._new_parent) == ({}, {}):
802
for children in by_parent.itervalues():
803
name_ids = [(self.final_name(t), t) for t in children]
804
if not self._case_sensitive_target:
805
name_ids = [(n.lower(), t) for n, t in name_ids]
809
for name, trans_id in name_ids:
811
kind = self.final_kind(trans_id)
814
file_id = self.final_file_id(trans_id)
815
if kind is None and file_id is None:
817
if name == last_name:
818
conflicts.append(('duplicate', last_trans_id, trans_id,
821
last_trans_id = trans_id
824
def _duplicate_ids(self):
825
"""Each inventory id may only be used once"""
827
removed_tree_ids = set((self.tree_file_id(trans_id) for trans_id in
829
all_ids = self._tree.all_file_ids()
830
active_tree_ids = all_ids.difference(removed_tree_ids)
831
for trans_id, file_id in self._new_id.iteritems():
832
if file_id in active_tree_ids:
833
old_trans_id = self.trans_id_tree_file_id(file_id)
834
conflicts.append(('duplicate id', old_trans_id, trans_id))
837
def _parent_type_conflicts(self, by_parent):
838
"""parents must have directory 'contents'."""
840
for parent_id, children in by_parent.iteritems():
841
if parent_id is ROOT_PARENT:
843
if not self._any_contents(children):
845
for child in children:
847
self.final_kind(child)
851
kind = self.final_kind(parent_id)
855
conflicts.append(('missing parent', parent_id))
856
elif kind != "directory":
857
conflicts.append(('non-directory parent', parent_id))
860
def _any_contents(self, trans_ids):
861
"""Return true if any of the trans_ids, will have contents."""
862
for trans_id in trans_ids:
864
kind = self.final_kind(trans_id)
870
def _limbo_name(self, trans_id):
871
"""Generate the limbo name of a file"""
872
limbo_name = self._limbo_files.get(trans_id)
873
if limbo_name is not None:
875
parent = self._new_parent.get(trans_id)
876
# if the parent directory is already in limbo (e.g. when building a
877
# tree), choose a limbo name inside the parent, to reduce further
879
use_direct_path = False
880
if self._new_contents.get(parent) == 'directory':
881
filename = self._new_name.get(trans_id)
882
if filename is not None:
883
if parent not in self._limbo_children:
884
self._limbo_children[parent] = set()
885
self._limbo_children_names[parent] = {}
886
use_direct_path = True
887
# the direct path can only be used if no other file has
888
# already taken this pathname, i.e. if the name is unused, or
889
# if it is already associated with this trans_id.
890
elif self._case_sensitive_target:
891
if (self._limbo_children_names[parent].get(filename)
892
in (trans_id, None)):
893
use_direct_path = True
895
for l_filename, l_trans_id in\
896
self._limbo_children_names[parent].iteritems():
897
if l_trans_id == trans_id:
899
if l_filename.lower() == filename.lower():
902
use_direct_path = True
905
limbo_name = pathjoin(self._limbo_files[parent], filename)
906
self._limbo_children[parent].add(trans_id)
907
self._limbo_children_names[parent][filename] = trans_id
909
limbo_name = pathjoin(self._limbodir, trans_id)
910
self._needs_rename.add(trans_id)
911
self._limbo_files[trans_id] = limbo_name
914
def _set_executability(self, path, trans_id):
915
"""Set the executability of versioned files """
916
if supports_executable():
917
new_executability = self._new_executability[trans_id]
918
abspath = self._tree.abspath(path)
919
current_mode = os.stat(abspath).st_mode
920
if new_executability:
923
to_mode = current_mode | (0100 & ~umask)
924
# Enable x-bit for others only if they can read it.
925
if current_mode & 0004:
926
to_mode |= 0001 & ~umask
927
if current_mode & 0040:
928
to_mode |= 0010 & ~umask
930
to_mode = current_mode & ~0111
931
os.chmod(abspath, to_mode)
933
def _new_entry(self, name, parent_id, file_id):
934
"""Helper function to create a new filesystem entry."""
935
trans_id = self.create_path(name, parent_id)
936
if file_id is not None:
937
self.version_file(file_id, trans_id)
940
def new_file(self, name, parent_id, contents, file_id=None,
942
"""Convenience method to create files.
944
name is the name of the file to create.
945
parent_id is the transaction id of the parent directory of the file.
946
contents is an iterator of bytestrings, which will be used to produce
948
:param file_id: The inventory ID of the file, if it is to be versioned.
949
:param executable: Only valid when a file_id has been supplied.
951
trans_id = self._new_entry(name, parent_id, file_id)
952
# TODO: rather than scheduling a set_executable call,
953
# have create_file create the file with the right mode.
954
self.create_file(contents, trans_id)
955
if executable is not None:
956
self.set_executability(executable, trans_id)
959
def new_directory(self, name, parent_id, file_id=None):
960
"""Convenience method to create directories.
962
name is the name of the directory to create.
963
parent_id is the transaction id of the parent directory of the
965
file_id is the inventory ID of the directory, if it is to be versioned.
967
trans_id = self._new_entry(name, parent_id, file_id)
968
self.create_directory(trans_id)
971
def new_symlink(self, name, parent_id, target, file_id=None):
972
"""Convenience method to create symbolic link.
974
name is the name of the symlink to create.
975
parent_id is the transaction id of the parent directory of the symlink.
976
target is a bytestring of the target of the symlink.
977
file_id is the inventory ID of the file, if it is to be versioned.
979
trans_id = self._new_entry(name, parent_id, file_id)
980
self.create_symlink(target, trans_id)
983
def _affected_ids(self):
984
"""Return the set of transform ids affected by the transform"""
985
trans_ids = set(self._removed_id)
986
trans_ids.update(self._new_id.keys())
987
trans_ids.update(self._removed_contents)
988
trans_ids.update(self._new_contents.keys())
989
trans_ids.update(self._new_executability.keys())
990
trans_ids.update(self._new_name.keys())
991
trans_ids.update(self._new_parent.keys())
994
def _get_file_id_maps(self):
995
"""Return mapping of file_ids to trans_ids in the to and from states"""
996
trans_ids = self._affected_ids()
999
# Build up two dicts: trans_ids associated with file ids in the
1000
# FROM state, vs the TO state.
1001
for trans_id in trans_ids:
1002
from_file_id = self.tree_file_id(trans_id)
1003
if from_file_id is not None:
1004
from_trans_ids[from_file_id] = trans_id
1005
to_file_id = self.final_file_id(trans_id)
1006
if to_file_id is not None:
1007
to_trans_ids[to_file_id] = trans_id
1008
return from_trans_ids, to_trans_ids
1010
def _from_file_data(self, from_trans_id, from_versioned, file_id):
1011
"""Get data about a file in the from (tree) state
1013
Return a (name, parent, kind, executable) tuple
1015
from_path = self._tree_id_paths.get(from_trans_id)
1017
# get data from working tree if versioned
1018
from_entry = self._tree.iter_entries_by_dir([file_id]).next()[1]
1019
from_name = from_entry.name
1020
from_parent = from_entry.parent_id
1023
if from_path is None:
1024
# File does not exist in FROM state
1028
# File exists, but is not versioned. Have to use path-
1030
from_name = os.path.basename(from_path)
1031
tree_parent = self.get_tree_parent(from_trans_id)
1032
from_parent = self.tree_file_id(tree_parent)
1033
if from_path is not None:
1034
from_kind, from_executable, from_stats = \
1035
self._tree._comparison_data(from_entry, from_path)
1038
from_executable = False
1039
return from_name, from_parent, from_kind, from_executable
1041
def _to_file_data(self, to_trans_id, from_trans_id, from_executable):
1042
"""Get data about a file in the to (target) state
1044
Return a (name, parent, kind, executable) tuple
1046
to_name = self.final_name(to_trans_id)
1048
to_kind = self.final_kind(to_trans_id)
1051
to_parent = self.final_file_id(self.final_parent(to_trans_id))
1052
if to_trans_id in self._new_executability:
1053
to_executable = self._new_executability[to_trans_id]
1054
elif to_trans_id == from_trans_id:
1055
to_executable = from_executable
1057
to_executable = False
1058
return to_name, to_parent, to_kind, to_executable
1060
def iter_changes(self):
1061
"""Produce output in the same format as Tree.iter_changes.
1063
Will produce nonsensical results if invoked while inventory/filesystem
1064
conflicts (as reported by TreeTransform.find_conflicts()) are present.
1066
This reads the Transform, but only reproduces changes involving a
1067
file_id. Files that are not versioned in either of the FROM or TO
1068
states are not reflected.
1070
final_paths = FinalPaths(self)
1071
from_trans_ids, to_trans_ids = self._get_file_id_maps()
1073
# Now iterate through all active file_ids
1074
for file_id in set(from_trans_ids.keys() + to_trans_ids.keys()):
1076
from_trans_id = from_trans_ids.get(file_id)
1077
# find file ids, and determine versioning state
1078
if from_trans_id is None:
1079
from_versioned = False
1080
from_trans_id = to_trans_ids[file_id]
1082
from_versioned = True
1083
to_trans_id = to_trans_ids.get(file_id)
1084
if to_trans_id is None:
1085
to_versioned = False
1086
to_trans_id = from_trans_id
1090
from_name, from_parent, from_kind, from_executable = \
1091
self._from_file_data(from_trans_id, from_versioned, file_id)
1093
to_name, to_parent, to_kind, to_executable = \
1094
self._to_file_data(to_trans_id, from_trans_id, from_executable)
1096
if not from_versioned:
1099
from_path = self._tree_id_paths.get(from_trans_id)
1100
if not to_versioned:
1103
to_path = final_paths.get_path(to_trans_id)
1104
if from_kind != to_kind:
1106
elif to_kind in ('file', 'symlink') and (
1107
to_trans_id != from_trans_id or
1108
to_trans_id in self._new_contents):
1110
if (not modified and from_versioned == to_versioned and
1111
from_parent==to_parent and from_name == to_name and
1112
from_executable == to_executable):
1114
results.append((file_id, (from_path, to_path), modified,
1115
(from_versioned, to_versioned),
1116
(from_parent, to_parent),
1117
(from_name, to_name),
1118
(from_kind, to_kind),
1119
(from_executable, to_executable)))
1120
return iter(sorted(results, key=lambda x:x[1]))
1122
def get_preview_tree(self):
1123
"""Return a tree representing the result of the transform.
1125
This tree only supports the subset of Tree functionality required
1126
by show_diff_trees. It must only be compared to tt._tree.
1128
return _PreviewTree(self)
1130
def _text_parent(self, trans_id):
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:
1139
def _get_parents_texts(self, trans_id):
1140
"""Get texts for compression parents of this file."""
1141
file_id = self._text_parent(trans_id)
1144
return (self._tree.get_file_text(file_id),)
1146
def _get_parents_lines(self, trans_id):
1147
"""Get lines for compression parents of this file."""
1148
file_id = self._text_parent(trans_id)
1151
return (self._tree.get_file_lines(file_id),)
1153
def serialize(self, serializer):
1154
"""Serialize this TreeTransform.
1156
:param serializer: A Serialiser like pack.ContainerSerializer.
1158
new_name = dict((k, v.encode('utf-8')) for k, v in
1159
self._new_name.items())
1160
new_executability = dict((k, int(v)) for k, v in
1161
self._new_executability.items())
1162
tree_path_ids = dict((k.encode('utf-8'), v)
1163
for k, v in self._tree_path_ids.items())
1165
'_id_number': self._id_number,
1166
'_new_name': new_name,
1167
'_new_parent': self._new_parent,
1168
'_new_executability': new_executability,
1169
'_new_id': self._new_id,
1170
'_tree_path_ids': tree_path_ids,
1171
'_removed_id': list(self._removed_id),
1172
'_removed_contents': list(self._removed_contents),
1173
'_non_present_ids': self._non_present_ids,
1175
yield serializer.bytes_record(bencode.bencode(attribs),
1177
for trans_id, kind in self._new_contents.items():
1179
cur_file = open(self._limbo_name(trans_id), 'rb')
1181
lines = osutils.chunks_to_lines(cur_file.readlines())
1184
parents = self._get_parents_lines(trans_id)
1185
mpdiff = multiparent.MultiParent.from_lines(lines, parents)
1186
content = ''.join(mpdiff.to_patch())
1187
if kind == 'directory':
1189
if kind == 'symlink':
1190
content = os.readlink(self._limbo_name(trans_id))
1191
yield serializer.bytes_record(content, ((trans_id, kind),))
1194
def deserialize(self, records):
1195
"""Deserialize a stored TreeTransform.
1197
:param records: An iterable of (names, content) tuples, as per
1198
pack.ContainerPushParser.
1200
names, content = records.next()
1201
attribs = bencode.bdecode(content)
1202
self._id_number = attribs['_id_number']
1203
self._new_name = dict((k, v.decode('utf-8'))
1204
for k, v in attribs['_new_name'].items())
1205
self._new_parent = attribs['_new_parent']
1206
self._new_executability = dict((k, bool(v)) for k, v in
1207
attribs['_new_executability'].items())
1208
self._new_id = attribs['_new_id']
1209
self._r_new_id = dict((v, k) for k, v in self._new_id.items())
1210
self._tree_path_ids = {}
1211
self._tree_id_paths = {}
1212
for bytepath, trans_id in attribs['_tree_path_ids'].items():
1213
path = bytepath.decode('utf-8')
1214
self._tree_path_ids[path] = trans_id
1215
self._tree_id_paths[trans_id] = path
1216
self._removed_id = set(attribs['_removed_id'])
1217
self._removed_contents = set(attribs['_removed_contents'])
1218
self._non_present_ids = attribs['_non_present_ids']
1219
for ((trans_id, kind),), content in records:
1221
mpdiff = multiparent.MultiParent.from_patch(content)
1222
lines = mpdiff.to_lines(self._get_parents_texts(trans_id))
1223
self.create_file(lines, trans_id)
1224
if kind == 'directory':
1225
self.create_directory(trans_id)
1226
if kind == 'symlink':
1227
self.create_symlink(content.decode('utf-8'), trans_id)
1230
class TreeTransform(TreeTransformBase):
1231
"""Represent a tree transformation.
1233
This object is designed to support incremental generation of the transform,
1236
However, it gives optimum performance when parent directories are created
1237
before their contents. The transform is then able to put child files
1238
directly in their parent directory, avoiding later renames.
1240
It is easy to produce malformed transforms, but they are generally
1241
harmless. Attempting to apply a malformed transform will cause an
1242
exception to be raised before any modifications are made to the tree.
1244
Many kinds of malformed transforms can be corrected with the
1245
resolve_conflicts function. The remaining ones indicate programming error,
1246
such as trying to create a file with no path.
1248
Two sets of file creation methods are supplied. Convenience methods are:
1253
These are composed of the low-level methods:
1255
* create_file or create_directory or create_symlink
1259
Transform/Transaction ids
1260
-------------------------
1261
trans_ids are temporary ids assigned to all files involved in a transform.
1262
It's possible, even common, that not all files in the Tree have trans_ids.
1264
trans_ids are used because filenames and file_ids are not good enough
1265
identifiers; filenames change, and not all files have file_ids. File-ids
1266
are also associated with trans-ids, so that moving a file moves its
1269
trans_ids are only valid for the TreeTransform that generated them.
1273
Limbo is a temporary directory use to hold new versions of files.
1274
Files are added to limbo by create_file, create_directory, create_symlink,
1275
and their convenience variants (new_*). Files may be removed from limbo
1276
using cancel_creation. Files are renamed from limbo into their final
1277
location as part of TreeTransform.apply
1279
Limbo must be cleaned up, by either calling TreeTransform.apply or
1280
calling TreeTransform.finalize.
1282
Files are placed into limbo inside their parent directories, where
1283
possible. This reduces subsequent renames, and makes operations involving
1284
lots of files faster. This optimization is only possible if the parent
1285
directory is created *before* creating any of its children, so avoid
1286
creating children before parents, where possible.
1290
This temporary directory is used by _FileMover for storing files that are
1291
about to be deleted. In case of rollback, the files will be restored.
1292
FileMover does not delete files until it is sure that a rollback will not
1295
def __init__(self, tree, pb=DummyProgress()):
1296
"""Note: a tree_write lock is taken on the tree.
1298
Use TreeTransform.finalize() to release the lock (can be omitted if
1299
TreeTransform.apply() called).
1301
tree.lock_tree_write()
1304
limbodir = urlutils.local_path_from_url(
1305
tree._transport.abspath('limbo'))
1309
if e.errno == errno.EEXIST:
1310
raise ExistingLimbo(limbodir)
1311
deletiondir = urlutils.local_path_from_url(
1312
tree._transport.abspath('pending-deletion'))
1314
os.mkdir(deletiondir)
1316
if e.errno == errno.EEXIST:
1317
raise errors.ExistingPendingDeletion(deletiondir)
1322
TreeTransformBase.__init__(self, tree, limbodir, pb,
1323
tree.case_sensitive)
1324
self._deletiondir = deletiondir
1326
def apply(self, no_conflicts=False, precomputed_delta=None, _mover=None):
1327
"""Apply all changes to the inventory and filesystem.
1329
If filesystem or inventory conflicts are present, MalformedTransform
1332
If apply succeeds, finalize is not necessary.
1334
:param no_conflicts: if True, the caller guarantees there are no
1335
conflicts, so no check is made.
1336
:param precomputed_delta: An inventory delta to use instead of
1338
:param _mover: Supply an alternate FileMover, for testing
1340
if not no_conflicts:
1341
conflicts = self.find_conflicts()
1342
if len(conflicts) != 0:
1343
raise MalformedTransform(conflicts=conflicts)
1344
child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
1346
if precomputed_delta is None:
1347
child_pb.update('Apply phase', 0, 2)
1348
inventory_delta = self._generate_inventory_delta()
1351
inventory_delta = precomputed_delta
1354
mover = _FileMover()
1358
child_pb.update('Apply phase', 0 + offset, 2 + offset)
1359
self._apply_removals(mover)
1360
child_pb.update('Apply phase', 1 + offset, 2 + offset)
1361
modified_paths = self._apply_insertions(mover)
1366
mover.apply_deletions()
1369
self._tree.apply_inventory_delta(inventory_delta)
1372
return _TransformResults(modified_paths, self.rename_count)
1374
def _generate_inventory_delta(self):
1375
"""Generate an inventory delta for the current transform."""
1376
inventory_delta = []
1377
child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
1378
new_paths = self._inventory_altered()
1379
total_entries = len(new_paths) + len(self._removed_id)
1381
for num, trans_id in enumerate(self._removed_id):
1383
child_pb.update('removing file', num, total_entries)
1384
if trans_id == self._new_root:
1385
file_id = self._tree.get_root_id()
1387
file_id = self.tree_file_id(trans_id)
1388
# File-id isn't really being deleted, just moved
1389
if file_id in self._r_new_id:
1391
path = self._tree_id_paths[trans_id]
1392
inventory_delta.append((path, None, file_id, None))
1393
new_path_file_ids = dict((t, self.final_file_id(t)) for p, t in
1395
entries = self._tree.iter_entries_by_dir(
1396
new_path_file_ids.values())
1397
old_paths = dict((e.file_id, p) for p, e in entries)
1399
for num, (path, trans_id) in enumerate(new_paths):
1401
child_pb.update('adding file',
1402
num + len(self._removed_id), total_entries)
1403
file_id = new_path_file_ids[trans_id]
1408
kind = self.final_kind(trans_id)
1410
kind = self._tree.stored_kind(file_id)
1411
parent_trans_id = self.final_parent(trans_id)
1412
parent_file_id = new_path_file_ids.get(parent_trans_id)
1413
if parent_file_id is None:
1414
parent_file_id = self.final_file_id(parent_trans_id)
1415
if trans_id in self._new_reference_revision:
1416
new_entry = inventory.TreeReference(
1418
self._new_name[trans_id],
1419
self.final_file_id(self._new_parent[trans_id]),
1420
None, self._new_reference_revision[trans_id])
1422
new_entry = inventory.make_entry(kind,
1423
self.final_name(trans_id),
1424
parent_file_id, file_id)
1425
old_path = old_paths.get(new_entry.file_id)
1426
new_executability = self._new_executability.get(trans_id)
1427
if new_executability is not None:
1428
new_entry.executable = new_executability
1429
inventory_delta.append(
1430
(old_path, path, new_entry.file_id, new_entry))
1433
return inventory_delta
1435
def _apply_removals(self, mover):
1436
"""Perform tree operations that remove directory/inventory names.
1438
That is, delete files that are to be deleted, and put any files that
1439
need renaming into limbo. This must be done in strict child-to-parent
1442
If inventory_delta is None, no inventory delta generation is performed.
1444
tree_paths = list(self._tree_path_ids.iteritems())
1445
tree_paths.sort(reverse=True)
1446
child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
1448
for num, data in enumerate(tree_paths):
1449
path, trans_id = data
1450
child_pb.update('removing file', num, len(tree_paths))
1451
full_path = self._tree.abspath(path)
1452
if trans_id in self._removed_contents:
1453
mover.pre_delete(full_path, os.path.join(self._deletiondir,
1455
elif trans_id in self._new_name or trans_id in \
1458
mover.rename(full_path, self._limbo_name(trans_id))
1460
if e.errno != errno.ENOENT:
1463
self.rename_count += 1
1467
def _apply_insertions(self, mover):
1468
"""Perform tree operations that insert directory/inventory names.
1470
That is, create any files that need to be created, and restore from
1471
limbo any files that needed renaming. This must be done in strict
1472
parent-to-child order.
1474
If inventory_delta is None, no inventory delta is calculated, and
1475
no list of modified paths is returned.
1477
new_paths = self.new_paths(filesystem_only=True)
1479
new_path_file_ids = dict((t, self.final_file_id(t)) for p, t in
1481
child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
1483
for num, (path, trans_id) in enumerate(new_paths):
1485
child_pb.update('adding file', num, len(new_paths))
1486
full_path = self._tree.abspath(path)
1487
if trans_id in self._needs_rename:
1489
mover.rename(self._limbo_name(trans_id), full_path)
1491
# We may be renaming a dangling inventory id
1492
if e.errno != errno.ENOENT:
1495
self.rename_count += 1
1496
if (trans_id in self._new_contents or
1497
self.path_changed(trans_id)):
1498
if trans_id in self._new_contents:
1499
modified_paths.append(full_path)
1500
if trans_id in self._new_executability:
1501
self._set_executability(path, trans_id)
1504
self._new_contents.clear()
1505
return modified_paths
1508
class TransformPreview(TreeTransformBase):
1509
"""A TreeTransform for generating preview trees.
1511
Unlike TreeTransform, this version works when the input tree is a
1512
RevisionTree, rather than a WorkingTree. As a result, it tends to ignore
1513
unversioned files in the input tree.
1516
def __init__(self, tree, pb=DummyProgress(), case_sensitive=True):
1518
limbodir = osutils.mkdtemp(prefix='bzr-limbo-')
1519
TreeTransformBase.__init__(self, tree, limbodir, pb, case_sensitive)
1521
def canonical_path(self, path):
1524
def tree_kind(self, trans_id):
1525
path = self._tree_id_paths.get(trans_id)
1527
raise NoSuchFile(None)
1528
file_id = self._tree.path2id(path)
1529
return self._tree.kind(file_id)
1531
def _set_mode(self, trans_id, mode_id, typefunc):
1532
"""Set the mode of new file contents.
1533
The mode_id is the existing file to get the mode from (often the same
1534
as trans_id). The operation is only performed if there's a mode match
1535
according to typefunc.
1537
# is it ok to ignore this? probably
1540
def iter_tree_children(self, parent_id):
1541
"""Iterate through the entry's tree children, if any"""
1543
path = self._tree_id_paths[parent_id]
1546
file_id = self.tree_file_id(parent_id)
1549
entry = self._tree.iter_entries_by_dir([file_id]).next()[1]
1550
children = getattr(entry, 'children', {})
1551
for child in children:
1552
childpath = joinpath(path, child)
1553
yield self.trans_id_tree_path(childpath)
1556
class _PreviewTree(tree.Tree):
1557
"""Partial implementation of Tree to support show_diff_trees"""
1559
def __init__(self, transform):
1560
self._transform = transform
1561
self._final_paths = FinalPaths(transform)
1562
self.__by_parent = None
1563
self._parent_ids = []
1564
self._all_children_cache = {}
1565
self._path2trans_id_cache = {}
1566
self._final_name_cache = {}
1568
def _changes(self, file_id):
1569
for changes in self._transform.iter_changes():
1570
if changes[0] == file_id:
1573
def _content_change(self, file_id):
1574
"""Return True if the content of this file changed"""
1575
changes = self._changes(file_id)
1576
# changes[2] is true if the file content changed. See
1577
# InterTree.iter_changes.
1578
return (changes is not None and changes[2])
1580
def _get_repository(self):
1581
repo = getattr(self._transform._tree, '_repository', None)
1583
repo = self._transform._tree.branch.repository
1586
def _iter_parent_trees(self):
1587
for revision_id in self.get_parent_ids():
1589
yield self.revision_tree(revision_id)
1590
except errors.NoSuchRevisionInTree:
1591
yield self._get_repository().revision_tree(revision_id)
1593
def _get_file_revision(self, file_id, vf, tree_revision):
1594
parent_keys = [(file_id, self._file_revision(t, file_id)) for t in
1595
self._iter_parent_trees()]
1596
vf.add_lines((file_id, tree_revision), parent_keys,
1597
self.get_file(file_id).readlines())
1598
repo = self._get_repository()
1599
base_vf = repo.texts
1600
if base_vf not in vf.fallback_versionedfiles:
1601
vf.fallback_versionedfiles.append(base_vf)
1602
return tree_revision
1604
def _stat_limbo_file(self, file_id):
1605
trans_id = self._transform.trans_id_file_id(file_id)
1606
name = self._transform._limbo_name(trans_id)
1607
return os.lstat(name)
1610
def _by_parent(self):
1611
if self.__by_parent is None:
1612
self.__by_parent = self._transform.by_parent()
1613
return self.__by_parent
1615
def _comparison_data(self, entry, path):
1616
kind, size, executable, link_or_sha1 = self.path_content_summary(path)
1617
if kind == 'missing':
1621
file_id = self._transform.final_file_id(self._path2trans_id(path))
1622
executable = self.is_executable(file_id, path)
1623
return kind, executable, None
1625
def lock_read(self):
1626
# Perhaps in theory, this should lock the TreeTransform?
1633
def inventory(self):
1634
"""This Tree does not use inventory as its backing data."""
1635
raise NotImplementedError(_PreviewTree.inventory)
1637
def get_root_id(self):
1638
return self._transform.final_file_id(self._transform.root)
1640
def all_file_ids(self):
1641
tree_ids = set(self._transform._tree.all_file_ids())
1642
tree_ids.difference_update(self._transform.tree_file_id(t)
1643
for t in self._transform._removed_id)
1644
tree_ids.update(self._transform._new_id.values())
1648
return iter(self.all_file_ids())
1650
def has_id(self, file_id):
1651
if file_id in self._transform._r_new_id:
1653
elif file_id in set([self._transform.tree_file_id(trans_id) for
1654
trans_id in self._transform._removed_id]):
1657
return self._transform._tree.has_id(file_id)
1659
def _path2trans_id(self, path):
1660
# We must not use None here, because that is a valid value to store.
1661
trans_id = self._path2trans_id_cache.get(path, object)
1662
if trans_id is not object:
1664
segments = splitpath(path)
1665
cur_parent = self._transform.root
1666
for cur_segment in segments:
1667
for child in self._all_children(cur_parent):
1668
final_name = self._final_name_cache.get(child)
1669
if final_name is None:
1670
final_name = self._transform.final_name(child)
1671
self._final_name_cache[child] = final_name
1672
if final_name == cur_segment:
1676
self._path2trans_id_cache[path] = None
1678
self._path2trans_id_cache[path] = cur_parent
1681
def path2id(self, path):
1682
return self._transform.final_file_id(self._path2trans_id(path))
1684
def id2path(self, file_id):
1685
trans_id = self._transform.trans_id_file_id(file_id)
1687
return self._final_paths._determine_path(trans_id)
1689
raise errors.NoSuchId(self, file_id)
1691
def _all_children(self, trans_id):
1692
children = self._all_children_cache.get(trans_id)
1693
if children is not None:
1695
children = set(self._transform.iter_tree_children(trans_id))
1696
# children in the _new_parent set are provided by _by_parent.
1697
children.difference_update(self._transform._new_parent.keys())
1698
children.update(self._by_parent.get(trans_id, []))
1699
self._all_children_cache[trans_id] = children
1702
def iter_children(self, file_id):
1703
trans_id = self._transform.trans_id_file_id(file_id)
1704
for child_trans_id in self._all_children(trans_id):
1705
yield self._transform.final_file_id(child_trans_id)
1708
possible_extras = set(self._transform.trans_id_tree_path(p) for p
1709
in self._transform._tree.extras())
1710
possible_extras.update(self._transform._new_contents)
1711
possible_extras.update(self._transform._removed_id)
1712
for trans_id in possible_extras:
1713
if self._transform.final_file_id(trans_id) is None:
1714
yield self._final_paths._determine_path(trans_id)
1716
def _make_inv_entries(self, ordered_entries, specific_file_ids):
1717
for trans_id, parent_file_id in ordered_entries:
1718
file_id = self._transform.final_file_id(trans_id)
1721
if (specific_file_ids is not None
1722
and file_id not in specific_file_ids):
1725
kind = self._transform.final_kind(trans_id)
1727
kind = self._transform._tree.stored_kind(file_id)
1728
new_entry = inventory.make_entry(
1730
self._transform.final_name(trans_id),
1731
parent_file_id, file_id)
1732
yield new_entry, trans_id
1734
def _list_files_by_dir(self):
1735
todo = [ROOT_PARENT]
1737
while len(todo) > 0:
1739
parent_file_id = self._transform.final_file_id(parent)
1740
children = list(self._all_children(parent))
1741
paths = dict(zip(children, self._final_paths.get_paths(children)))
1742
children.sort(key=paths.get)
1743
todo.extend(reversed(children))
1744
for trans_id in children:
1745
ordered_ids.append((trans_id, parent_file_id))
1748
def iter_entries_by_dir(self, specific_file_ids=None):
1749
# This may not be a maximally efficient implementation, but it is
1750
# reasonably straightforward. An implementation that grafts the
1751
# TreeTransform changes onto the tree's iter_entries_by_dir results
1752
# might be more efficient, but requires tricky inferences about stack
1754
ordered_ids = self._list_files_by_dir()
1755
for entry, trans_id in self._make_inv_entries(ordered_ids,
1757
yield unicode(self._final_paths.get_path(trans_id)), entry
1759
def list_files(self, include_root=False):
1760
"""See Tree.list_files."""
1761
# XXX This should behave like WorkingTree.list_files, but is really
1762
# more like RevisionTree.list_files.
1763
for path, entry in self.iter_entries_by_dir():
1764
if entry.name == '' and not include_root:
1766
yield path, 'V', entry.kind, entry.file_id, entry
1768
def kind(self, file_id):
1769
trans_id = self._transform.trans_id_file_id(file_id)
1770
return self._transform.final_kind(trans_id)
1772
def stored_kind(self, file_id):
1773
trans_id = self._transform.trans_id_file_id(file_id)
1775
return self._transform._new_contents[trans_id]
1777
return self._transform._tree.stored_kind(file_id)
1779
def get_file_mtime(self, file_id, path=None):
1780
"""See Tree.get_file_mtime"""
1781
if not self._content_change(file_id):
1782
return self._transform._tree.get_file_mtime(file_id, path)
1783
return self._stat_limbo_file(file_id).st_mtime
1785
def _file_size(self, entry, stat_value):
1786
return self.get_file_size(entry.file_id)
1788
def get_file_size(self, file_id):
1789
"""See Tree.get_file_size"""
1790
if self.kind(file_id) == 'file':
1791
return self._transform._tree.get_file_size(file_id)
1795
def get_file_sha1(self, file_id, path=None, stat_value=None):
1796
trans_id = self._transform.trans_id_file_id(file_id)
1797
kind = self._transform._new_contents.get(trans_id)
1799
return self._transform._tree.get_file_sha1(file_id)
1801
fileobj = self.get_file(file_id)
1803
return sha_file(fileobj)
1807
def is_executable(self, file_id, path=None):
1810
trans_id = self._transform.trans_id_file_id(file_id)
1812
return self._transform._new_executability[trans_id]
1815
return self._transform._tree.is_executable(file_id, path)
1817
if e.errno == errno.ENOENT:
1820
except errors.NoSuchId:
1823
def path_content_summary(self, path):
1824
trans_id = self._path2trans_id(path)
1825
tt = self._transform
1826
tree_path = tt._tree_id_paths.get(trans_id)
1827
kind = tt._new_contents.get(trans_id)
1829
if tree_path is None or trans_id in tt._removed_contents:
1830
return 'missing', None, None, None
1831
summary = tt._tree.path_content_summary(tree_path)
1832
kind, size, executable, link_or_sha1 = summary
1835
limbo_name = tt._limbo_name(trans_id)
1836
if trans_id in tt._new_reference_revision:
1837
kind = 'tree-reference'
1839
statval = os.lstat(limbo_name)
1840
size = statval.st_size
1841
if not supports_executable():
1844
executable = statval.st_mode & S_IEXEC
1848
if kind == 'symlink':
1849
link_or_sha1 = os.readlink(limbo_name).decode(osutils._fs_enc)
1850
if supports_executable():
1851
executable = tt._new_executability.get(trans_id, executable)
1852
return kind, size, executable, link_or_sha1
1854
def iter_changes(self, from_tree, include_unchanged=False,
1855
specific_files=None, pb=None, extra_trees=None,
1856
require_versioned=True, want_unversioned=False):
1857
"""See InterTree.iter_changes.
1859
This has a fast path that is only used when the from_tree matches
1860
the transform tree, and no fancy options are supplied.
1862
if (from_tree is not self._transform._tree or include_unchanged or
1863
specific_files or want_unversioned):
1864
return tree.InterTree(from_tree, self).iter_changes(
1865
include_unchanged=include_unchanged,
1866
specific_files=specific_files,
1868
extra_trees=extra_trees,
1869
require_versioned=require_versioned,
1870
want_unversioned=want_unversioned)
1871
if want_unversioned:
1872
raise ValueError('want_unversioned is not supported')
1873
return self._transform.iter_changes()
1875
def get_file(self, file_id, path=None):
1876
"""See Tree.get_file"""
1877
if not self._content_change(file_id):
1878
return self._transform._tree.get_file(file_id, path)
1879
trans_id = self._transform.trans_id_file_id(file_id)
1880
name = self._transform._limbo_name(trans_id)
1881
return open(name, 'rb')
1883
def annotate_iter(self, file_id,
1884
default_revision=_mod_revision.CURRENT_REVISION):
1885
changes = self._changes(file_id)
1889
changed_content, versioned, kind = (changes[2], changes[3],
1893
get_old = (kind[0] == 'file' and versioned[0])
1895
old_annotation = self._transform._tree.annotate_iter(file_id,
1896
default_revision=default_revision)
1900
return old_annotation
1901
if not changed_content:
1902
return old_annotation
1903
return annotate.reannotate([old_annotation],
1904
self.get_file(file_id).readlines(),
1907
def get_symlink_target(self, file_id):
1908
"""See Tree.get_symlink_target"""
1909
if not self._content_change(file_id):
1910
return self._transform._tree.get_symlink_target(file_id)
1911
trans_id = self._transform.trans_id_file_id(file_id)
1912
name = self._transform._limbo_name(trans_id)
1913
return os.readlink(name)
1915
def walkdirs(self, prefix=''):
1916
pending = [self._transform.root]
1917
while len(pending) > 0:
1918
parent_id = pending.pop()
1921
prefix = prefix.rstrip('/')
1922
parent_path = self._final_paths.get_path(parent_id)
1923
parent_file_id = self._transform.final_file_id(parent_id)
1924
for child_id in self._all_children(parent_id):
1925
path_from_root = self._final_paths.get_path(child_id)
1926
basename = self._transform.final_name(child_id)
1927
file_id = self._transform.final_file_id(child_id)
1929
kind = self._transform.final_kind(child_id)
1930
versioned_kind = kind
1933
versioned_kind = self._transform._tree.stored_kind(file_id)
1934
if versioned_kind == 'directory':
1935
subdirs.append(child_id)
1936
children.append((path_from_root, basename, kind, None,
1937
file_id, versioned_kind))
1939
if parent_path.startswith(prefix):
1940
yield (parent_path, parent_file_id), children
1941
pending.extend(sorted(subdirs, key=self._final_paths.get_path,
1944
def get_parent_ids(self):
1945
return self._parent_ids
1947
def set_parent_ids(self, parent_ids):
1948
self._parent_ids = parent_ids
1950
def get_revision_tree(self, revision_id):
1951
return self._transform._tree.get_revision_tree(revision_id)
1954
def joinpath(parent, child):
1955
"""Join tree-relative paths, handling the tree root specially"""
1956
if parent is None or parent == "":
1959
return pathjoin(parent, child)
1962
class FinalPaths(object):
1963
"""Make path calculation cheap by memoizing paths.
1965
The underlying tree must not be manipulated between calls, or else
1966
the results will likely be incorrect.
1968
def __init__(self, transform):
1969
object.__init__(self)
1970
self._known_paths = {}
1971
self.transform = transform
1973
def _determine_path(self, trans_id):
1974
if trans_id == self.transform.root:
1976
name = self.transform.final_name(trans_id)
1977
parent_id = self.transform.final_parent(trans_id)
1978
if parent_id == self.transform.root:
1981
return pathjoin(self.get_path(parent_id), name)
1983
def get_path(self, trans_id):
1984
"""Find the final path associated with a trans_id"""
1985
if trans_id not in self._known_paths:
1986
self._known_paths[trans_id] = self._determine_path(trans_id)
1987
return self._known_paths[trans_id]
1989
def get_paths(self, trans_ids):
1990
return [(self.get_path(t), t) for t in trans_ids]
1994
def topology_sorted_ids(tree):
1995
"""Determine the topological order of the ids in a tree"""
1996
file_ids = list(tree)
1997
file_ids.sort(key=tree.id2path)
2001
def build_tree(tree, wt, accelerator_tree=None, hardlink=False,
2002
delta_from_tree=False):
2003
"""Create working tree for a branch, using a TreeTransform.
2005
This function should be used on empty trees, having a tree root at most.
2006
(see merge and revert functionality for working with existing trees)
2008
Existing files are handled like so:
2010
- Existing bzrdirs take precedence over creating new items. They are
2011
created as '%s.diverted' % name.
2012
- Otherwise, if the content on disk matches the content we are building,
2013
it is silently replaced.
2014
- Otherwise, conflict resolution will move the old file to 'oldname.moved'.
2016
:param tree: The tree to convert wt into a copy of
2017
:param wt: The working tree that files will be placed into
2018
:param accelerator_tree: A tree which can be used for retrieving file
2019
contents more quickly than tree itself, i.e. a workingtree. tree
2020
will be used for cases where accelerator_tree's content is different.
2021
:param hardlink: If true, hard-link files to accelerator_tree, where
2022
possible. accelerator_tree must implement abspath, i.e. be a
2024
:param delta_from_tree: If true, build_tree may use the input Tree to
2025
generate the inventory delta.
2027
wt.lock_tree_write()
2031
if accelerator_tree is not None:
2032
accelerator_tree.lock_read()
2034
return _build_tree(tree, wt, accelerator_tree, hardlink,
2037
if accelerator_tree is not None:
2038
accelerator_tree.unlock()
2045
def _build_tree(tree, wt, accelerator_tree, hardlink, delta_from_tree):
2046
"""See build_tree."""
2047
for num, _unused in enumerate(wt.all_file_ids()):
2048
if num > 0: # more than just a root
2049
raise errors.WorkingTreeAlreadyPopulated(base=wt.basedir)
2050
existing_files = set()
2051
for dir, files in wt.walkdirs():
2052
existing_files.update(f[0] for f in files)
2054
top_pb = bzrlib.ui.ui_factory.nested_progress_bar()
2055
pp = ProgressPhase("Build phase", 2, top_pb)
2056
if tree.inventory.root is not None:
2057
# This is kind of a hack: we should be altering the root
2058
# as part of the regular tree shape diff logic.
2059
# The conditional test here is to avoid doing an
2060
# expensive operation (flush) every time the root id
2061
# is set within the tree, nor setting the root and thus
2062
# marking the tree as dirty, because we use two different
2063
# idioms here: tree interfaces and inventory interfaces.
2064
if wt.get_root_id() != tree.get_root_id():
2065
wt.set_root_id(tree.get_root_id())
2067
tt = TreeTransform(wt)
2071
file_trans_id[wt.get_root_id()] = \
2072
tt.trans_id_tree_file_id(wt.get_root_id())
2073
pb = bzrlib.ui.ui_factory.nested_progress_bar()
2075
deferred_contents = []
2077
total = len(tree.inventory)
2079
precomputed_delta = []
2081
precomputed_delta = None
2082
for num, (tree_path, entry) in \
2083
enumerate(tree.inventory.iter_entries_by_dir()):
2084
pb.update("Building tree", num - len(deferred_contents), total)
2085
if entry.parent_id is None:
2088
file_id = entry.file_id
2090
precomputed_delta.append((None, tree_path, file_id, entry))
2091
if tree_path in existing_files:
2092
target_path = wt.abspath(tree_path)
2093
kind = file_kind(target_path)
2094
if kind == "directory":
2096
bzrdir.BzrDir.open(target_path)
2097
except errors.NotBranchError:
2101
if (file_id not in divert and
2102
_content_match(tree, entry, file_id, kind,
2104
tt.delete_contents(tt.trans_id_tree_path(tree_path))
2105
if kind == 'directory':
2107
parent_id = file_trans_id[entry.parent_id]
2108
if entry.kind == 'file':
2109
# We *almost* replicate new_by_entry, so that we can defer
2110
# getting the file text, and get them all at once.
2111
trans_id = tt.create_path(entry.name, parent_id)
2112
file_trans_id[file_id] = trans_id
2113
tt.version_file(file_id, trans_id)
2114
executable = tree.is_executable(file_id, tree_path)
2116
tt.set_executability(executable, trans_id)
2117
trans_data = (trans_id, tree_path)
2118
deferred_contents.append((file_id, trans_data))
2120
file_trans_id[file_id] = new_by_entry(tt, entry, parent_id,
2123
new_trans_id = file_trans_id[file_id]
2124
old_parent = tt.trans_id_tree_path(tree_path)
2125
_reparent_children(tt, old_parent, new_trans_id)
2126
offset = num + 1 - len(deferred_contents)
2127
_create_files(tt, tree, deferred_contents, pb, offset,
2128
accelerator_tree, hardlink)
2132
divert_trans = set(file_trans_id[f] for f in divert)
2133
resolver = lambda t, c: resolve_checkout(t, c, divert_trans)
2134
raw_conflicts = resolve_conflicts(tt, pass_func=resolver)
2135
if len(raw_conflicts) > 0:
2136
precomputed_delta = None
2137
conflicts = cook_conflicts(raw_conflicts, tt)
2138
for conflict in conflicts:
2141
wt.add_conflicts(conflicts)
2142
except errors.UnsupportedOperation:
2144
result = tt.apply(no_conflicts=True,
2145
precomputed_delta=precomputed_delta)
2152
def _create_files(tt, tree, desired_files, pb, offset, accelerator_tree,
2154
total = len(desired_files) + offset
2156
if accelerator_tree is None:
2157
new_desired_files = desired_files
2159
iter = accelerator_tree.iter_changes(tree, include_unchanged=True)
2160
unchanged = dict((f, p[1]) for (f, p, c, v, d, n, k, e)
2161
in iter if not (c or e[0] != e[1]))
2162
new_desired_files = []
2164
for file_id, (trans_id, tree_path) in desired_files:
2165
accelerator_path = unchanged.get(file_id)
2166
if accelerator_path is None:
2167
new_desired_files.append((file_id, (trans_id, tree_path)))
2169
pb.update('Adding file contents', count + offset, total)
2171
tt.create_hardlink(accelerator_tree.abspath(accelerator_path),
2174
contents = accelerator_tree.get_file(file_id, accelerator_path)
2175
if wt.supports_content_filtering():
2176
filters = wt._content_filter_stack(tree_path)
2177
contents = filtered_output_bytes(contents, filters,
2178
ContentFilterContext(tree_path, tree))
2180
tt.create_file(contents, trans_id)
2184
except AttributeError:
2185
# after filtering, contents may no longer be file-like
2189
for count, ((trans_id, tree_path), contents) in enumerate(
2190
tree.iter_files_bytes(new_desired_files)):
2191
if wt.supports_content_filtering():
2192
filters = wt._content_filter_stack(tree_path)
2193
contents = filtered_output_bytes(contents, filters,
2194
ContentFilterContext(tree_path, tree))
2195
tt.create_file(contents, trans_id)
2196
pb.update('Adding file contents', count + offset, total)
2199
def _reparent_children(tt, old_parent, new_parent):
2200
for child in tt.iter_tree_children(old_parent):
2201
tt.adjust_path(tt.final_name(child), new_parent, child)
2203
def _reparent_transform_children(tt, old_parent, new_parent):
2204
by_parent = tt.by_parent()
2205
for child in by_parent[old_parent]:
2206
tt.adjust_path(tt.final_name(child), new_parent, child)
2207
return by_parent[old_parent]
2209
def _content_match(tree, entry, file_id, kind, target_path):
2210
if entry.kind != kind:
2212
if entry.kind == "directory":
2214
if entry.kind == "file":
2215
if tree.get_file(file_id).read() == file(target_path, 'rb').read():
2217
elif entry.kind == "symlink":
2218
if tree.get_symlink_target(file_id) == os.readlink(target_path):
2223
def resolve_checkout(tt, conflicts, divert):
2224
new_conflicts = set()
2225
for c_type, conflict in ((c[0], c) for c in conflicts):
2226
# Anything but a 'duplicate' would indicate programmer error
2227
if c_type != 'duplicate':
2228
raise AssertionError(c_type)
2229
# Now figure out which is new and which is old
2230
if tt.new_contents(conflict[1]):
2231
new_file = conflict[1]
2232
old_file = conflict[2]
2234
new_file = conflict[2]
2235
old_file = conflict[1]
2237
# We should only get here if the conflict wasn't completely
2239
final_parent = tt.final_parent(old_file)
2240
if new_file in divert:
2241
new_name = tt.final_name(old_file)+'.diverted'
2242
tt.adjust_path(new_name, final_parent, new_file)
2243
new_conflicts.add((c_type, 'Diverted to',
2244
new_file, old_file))
2246
new_name = tt.final_name(old_file)+'.moved'
2247
tt.adjust_path(new_name, final_parent, old_file)
2248
new_conflicts.add((c_type, 'Moved existing file to',
2249
old_file, new_file))
2250
return new_conflicts
2253
def new_by_entry(tt, entry, parent_id, tree):
2254
"""Create a new file according to its inventory entry"""
2258
contents = tree.get_file(entry.file_id).readlines()
2259
executable = tree.is_executable(entry.file_id)
2260
return tt.new_file(name, parent_id, contents, entry.file_id,
2262
elif kind in ('directory', 'tree-reference'):
2263
trans_id = tt.new_directory(name, parent_id, entry.file_id)
2264
if kind == 'tree-reference':
2265
tt.set_tree_reference(entry.reference_revision, trans_id)
2267
elif kind == 'symlink':
2268
target = tree.get_symlink_target(entry.file_id)
2269
return tt.new_symlink(name, parent_id, target, entry.file_id)
2271
raise errors.BadFileKindError(name, kind)
2274
@deprecated_function(deprecated_in((1, 9, 0)))
2275
def create_by_entry(tt, entry, tree, trans_id, lines=None, mode_id=None):
2276
"""Create new file contents according to an inventory entry.
2278
DEPRECATED. Use create_from_tree instead.
2280
if entry.kind == "file":
2282
lines = tree.get_file(entry.file_id).readlines()
2283
tt.create_file(lines, trans_id, mode_id=mode_id)
2284
elif entry.kind == "symlink":
2285
tt.create_symlink(tree.get_symlink_target(entry.file_id), trans_id)
2286
elif entry.kind == "directory":
2287
tt.create_directory(trans_id)
2290
def create_from_tree(tt, trans_id, tree, file_id, bytes=None):
2291
"""Create new file contents according to tree contents."""
2292
kind = tree.kind(file_id)
2293
if kind == 'directory':
2294
tt.create_directory(trans_id)
2295
elif kind == "file":
2297
tree_file = tree.get_file(file_id)
2299
bytes = tree_file.readlines()
2302
tt.create_file(bytes, trans_id)
2303
elif kind == "symlink":
2304
tt.create_symlink(tree.get_symlink_target(file_id), trans_id)
2306
raise AssertionError('Unknown kind %r' % kind)
2309
def create_entry_executability(tt, entry, trans_id):
2310
"""Set the executability of a trans_id according to an inventory entry"""
2311
if entry.kind == "file":
2312
tt.set_executability(entry.executable, trans_id)
2315
def get_backup_name(entry, by_parent, parent_trans_id, tt):
2316
return _get_backup_name(entry.name, by_parent, parent_trans_id, tt)
2319
def _get_backup_name(name, by_parent, parent_trans_id, tt):
2320
"""Produce a backup-style name that appears to be available"""
2324
yield "%s.~%d~" % (name, counter)
2326
for new_name in name_gen():
2327
if not tt.has_named_child(by_parent, parent_trans_id, new_name):
2331
def _entry_changes(file_id, entry, working_tree):
2332
"""Determine in which ways the inventory entry has changed.
2334
Returns booleans: has_contents, content_mod, meta_mod
2335
has_contents means there are currently contents, but they differ
2336
contents_mod means contents need to be modified
2337
meta_mod means the metadata needs to be modified
2339
cur_entry = working_tree.inventory[file_id]
2341
working_kind = working_tree.kind(file_id)
2344
has_contents = False
2347
if has_contents is True:
2348
if entry.kind != working_kind:
2349
contents_mod, meta_mod = True, False
2351
cur_entry._read_tree_state(working_tree.id2path(file_id),
2353
contents_mod, meta_mod = entry.detect_changes(cur_entry)
2354
cur_entry._forget_tree_state()
2355
return has_contents, contents_mod, meta_mod
2358
def revert(working_tree, target_tree, filenames, backups=False,
2359
pb=DummyProgress(), change_reporter=None):
2360
"""Revert a working tree's contents to those of a target tree."""
2361
target_tree.lock_read()
2362
tt = TreeTransform(working_tree, pb)
2364
pp = ProgressPhase("Revert phase", 3, pb)
2365
conflicts, merge_modified = _prepare_revert_transform(
2366
working_tree, target_tree, tt, filenames, backups, pp)
2368
change_reporter = delta._ChangeReporter(
2369
unversioned_filter=working_tree.is_ignored)
2370
delta.report_changes(tt.iter_changes(), change_reporter)
2371
for conflict in conflicts:
2375
working_tree.set_merge_modified(merge_modified)
2377
target_tree.unlock()
2383
def _prepare_revert_transform(working_tree, target_tree, tt, filenames,
2384
backups, pp, basis_tree=None,
2385
merge_modified=None):
2387
child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
2389
if merge_modified is None:
2390
merge_modified = working_tree.merge_modified()
2391
merge_modified = _alter_files(working_tree, target_tree, tt,
2392
child_pb, filenames, backups,
2393
merge_modified, basis_tree)
2397
child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
2399
raw_conflicts = resolve_conflicts(tt, child_pb,
2400
lambda t, c: conflict_pass(t, c, target_tree))
2403
conflicts = cook_conflicts(raw_conflicts, tt)
2404
return conflicts, merge_modified
2407
def _alter_files(working_tree, target_tree, tt, pb, specific_files,
2408
backups, merge_modified, basis_tree=None):
2409
if basis_tree is not None:
2410
basis_tree.lock_read()
2411
change_list = target_tree.iter_changes(working_tree,
2412
specific_files=specific_files, pb=pb)
2413
if target_tree.get_root_id() is None:
2419
for id_num, (file_id, path, changed_content, versioned, parent, name,
2420
kind, executable) in enumerate(change_list):
2421
if skip_root and file_id[0] is not None and parent[0] is None:
2423
trans_id = tt.trans_id_file_id(file_id)
2426
keep_content = False
2427
if kind[0] == 'file' and (backups or kind[1] is None):
2428
wt_sha1 = working_tree.get_file_sha1(file_id)
2429
if merge_modified.get(file_id) != wt_sha1:
2430
# acquire the basis tree lazily to prevent the
2431
# expense of accessing it when it's not needed ?
2432
# (Guessing, RBC, 200702)
2433
if basis_tree is None:
2434
basis_tree = working_tree.basis_tree()
2435
basis_tree.lock_read()
2436
if file_id in basis_tree:
2437
if wt_sha1 != basis_tree.get_file_sha1(file_id):
2439
elif kind[1] is None and not versioned[1]:
2441
if kind[0] is not None:
2442
if not keep_content:
2443
tt.delete_contents(trans_id)
2444
elif kind[1] is not None:
2445
parent_trans_id = tt.trans_id_file_id(parent[0])
2446
by_parent = tt.by_parent()
2447
backup_name = _get_backup_name(name[0], by_parent,
2448
parent_trans_id, tt)
2449
tt.adjust_path(backup_name, parent_trans_id, trans_id)
2450
new_trans_id = tt.create_path(name[0], parent_trans_id)
2451
if versioned == (True, True):
2452
tt.unversion_file(trans_id)
2453
tt.version_file(file_id, new_trans_id)
2454
# New contents should have the same unix perms as old
2457
trans_id = new_trans_id
2458
if kind[1] in ('directory', 'tree-reference'):
2459
tt.create_directory(trans_id)
2460
if kind[1] == 'tree-reference':
2461
revision = target_tree.get_reference_revision(file_id,
2463
tt.set_tree_reference(revision, trans_id)
2464
elif kind[1] == 'symlink':
2465
tt.create_symlink(target_tree.get_symlink_target(file_id),
2467
elif kind[1] == 'file':
2468
deferred_files.append((file_id, (trans_id, mode_id)))
2469
if basis_tree is None:
2470
basis_tree = working_tree.basis_tree()
2471
basis_tree.lock_read()
2472
new_sha1 = target_tree.get_file_sha1(file_id)
2473
if (file_id in basis_tree and new_sha1 ==
2474
basis_tree.get_file_sha1(file_id)):
2475
if file_id in merge_modified:
2476
del merge_modified[file_id]
2478
merge_modified[file_id] = new_sha1
2480
# preserve the execute bit when backing up
2481
if keep_content and executable[0] == executable[1]:
2482
tt.set_executability(executable[1], trans_id)
2483
elif kind[1] is not None:
2484
raise AssertionError(kind[1])
2485
if versioned == (False, True):
2486
tt.version_file(file_id, trans_id)
2487
if versioned == (True, False):
2488
tt.unversion_file(trans_id)
2489
if (name[1] is not None and
2490
(name[0] != name[1] or parent[0] != parent[1])):
2491
if name[1] == '' and parent[1] is None:
2492
parent_trans = ROOT_PARENT
2494
parent_trans = tt.trans_id_file_id(parent[1])
2495
tt.adjust_path(name[1], parent_trans, trans_id)
2496
if executable[0] != executable[1] and kind[1] == "file":
2497
tt.set_executability(executable[1], trans_id)
2498
for (trans_id, mode_id), bytes in target_tree.iter_files_bytes(
2500
tt.create_file(bytes, trans_id, mode_id)
2502
if basis_tree is not None:
2504
return merge_modified
2507
def resolve_conflicts(tt, pb=DummyProgress(), pass_func=None):
2508
"""Make many conflict-resolution attempts, but die if they fail"""
2509
if pass_func is None:
2510
pass_func = conflict_pass
2511
new_conflicts = set()
2514
pb.update('Resolution pass', n+1, 10)
2515
conflicts = tt.find_conflicts()
2516
if len(conflicts) == 0:
2517
return new_conflicts
2518
new_conflicts.update(pass_func(tt, conflicts))
2519
raise MalformedTransform(conflicts=conflicts)
2524
def conflict_pass(tt, conflicts, path_tree=None):
2525
"""Resolve some classes of conflicts.
2527
:param tt: The transform to resolve conflicts in
2528
:param conflicts: The conflicts to resolve
2529
:param path_tree: A Tree to get supplemental paths from
2531
new_conflicts = set()
2532
for c_type, conflict in ((c[0], c) for c in conflicts):
2533
if c_type == 'duplicate id':
2534
tt.unversion_file(conflict[1])
2535
new_conflicts.add((c_type, 'Unversioned existing file',
2536
conflict[1], conflict[2], ))
2537
elif c_type == 'duplicate':
2538
# files that were renamed take precedence
2539
final_parent = tt.final_parent(conflict[1])
2540
if tt.path_changed(conflict[1]):
2541
existing_file, new_file = conflict[2], conflict[1]
2543
existing_file, new_file = conflict[1], conflict[2]
2544
new_name = tt.final_name(existing_file)+'.moved'
2545
tt.adjust_path(new_name, final_parent, existing_file)
2546
new_conflicts.add((c_type, 'Moved existing file to',
2547
existing_file, new_file))
2548
elif c_type == 'parent loop':
2549
# break the loop by undoing one of the ops that caused the loop
2551
while not tt.path_changed(cur):
2552
cur = tt.final_parent(cur)
2553
new_conflicts.add((c_type, 'Cancelled move', cur,
2554
tt.final_parent(cur),))
2555
tt.adjust_path(tt.final_name(cur), tt.get_tree_parent(cur), cur)
2557
elif c_type == 'missing parent':
2558
trans_id = conflict[1]
2560
tt.cancel_deletion(trans_id)
2561
new_conflicts.add(('deleting parent', 'Not deleting',
2566
tt.final_name(trans_id)
2568
if path_tree is not None:
2569
file_id = tt.final_file_id(trans_id)
2571
file_id = tt.inactive_file_id(trans_id)
2572
entry = path_tree.inventory[file_id]
2573
# special-case the other tree root (move its
2574
# children to current root)
2575
if entry.parent_id is None:
2577
moved = _reparent_transform_children(
2578
tt, trans_id, tt.root)
2580
new_conflicts.add((c_type, 'Moved to root',
2583
parent_trans_id = tt.trans_id_file_id(
2585
tt.adjust_path(entry.name, parent_trans_id,
2588
tt.create_directory(trans_id)
2589
new_conflicts.add((c_type, 'Created directory', trans_id))
2590
elif c_type == 'unversioned parent':
2591
file_id = tt.inactive_file_id(conflict[1])
2592
# special-case the other tree root (move its children instead)
2593
if path_tree and file_id in path_tree:
2594
if path_tree.inventory[file_id].parent_id is None:
2596
tt.version_file(file_id, conflict[1])
2597
new_conflicts.add((c_type, 'Versioned directory', conflict[1]))
2598
elif c_type == 'non-directory parent':
2599
parent_id = conflict[1]
2600
parent_parent = tt.final_parent(parent_id)
2601
parent_name = tt.final_name(parent_id)
2602
parent_file_id = tt.final_file_id(parent_id)
2603
new_parent_id = tt.new_directory(parent_name + '.new',
2604
parent_parent, parent_file_id)
2605
_reparent_transform_children(tt, parent_id, new_parent_id)
2606
if parent_file_id is not None:
2607
tt.unversion_file(parent_id)
2608
new_conflicts.add((c_type, 'Created directory', new_parent_id))
2609
elif c_type == 'versioning no contents':
2610
tt.cancel_versioning(conflict[1])
2611
return new_conflicts
2614
def cook_conflicts(raw_conflicts, tt):
2615
"""Generate a list of cooked conflicts, sorted by file path"""
2616
from bzrlib.conflicts import Conflict
2617
conflict_iter = iter_cook_conflicts(raw_conflicts, tt)
2618
return sorted(conflict_iter, key=Conflict.sort_key)
2621
def iter_cook_conflicts(raw_conflicts, tt):
2622
from bzrlib.conflicts import Conflict
2624
for conflict in raw_conflicts:
2625
c_type = conflict[0]
2626
action = conflict[1]
2627
modified_path = fp.get_path(conflict[2])
2628
modified_id = tt.final_file_id(conflict[2])
2629
if len(conflict) == 3:
2630
yield Conflict.factory(c_type, action=action, path=modified_path,
2631
file_id=modified_id)
2634
conflicting_path = fp.get_path(conflict[3])
2635
conflicting_id = tt.final_file_id(conflict[3])
2636
yield Conflict.factory(c_type, action=action, path=modified_path,
2637
file_id=modified_id,
2638
conflict_path=conflicting_path,
2639
conflict_file_id=conflicting_id)
2642
class _FileMover(object):
2643
"""Moves and deletes files for TreeTransform, tracking operations"""
2646
self.past_renames = []
2647
self.pending_deletions = []
2649
def rename(self, from_, to):
2650
"""Rename a file from one path to another. Functions like os.rename"""
2652
os.rename(from_, to)
2654
if e.errno in (errno.EEXIST, errno.ENOTEMPTY):
2655
raise errors.FileExists(to, str(e))
2657
self.past_renames.append((from_, to))
2659
def pre_delete(self, from_, to):
2660
"""Rename a file out of the way and mark it for deletion.
2662
Unlike os.unlink, this works equally well for files and directories.
2663
:param from_: The current file path
2664
:param to: A temporary path for the file
2666
self.rename(from_, to)
2667
self.pending_deletions.append(to)
2670
"""Reverse all renames that have been performed"""
2671
for from_, to in reversed(self.past_renames):
2672
os.rename(to, from_)
2673
# after rollback, don't reuse _FileMover
2675
pending_deletions = None
2677
def apply_deletions(self):
2678
"""Apply all marked deletions"""
2679
for path in self.pending_deletions:
2681
# after apply_deletions, don't reuse _FileMover
2683
pending_deletions = None
added
removed
bzrlib/transform.py
