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# Copyright (C) 2006, 2007, 2008, 2009 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.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 its kin."""
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def __init__(self, tree, pb=DummyProgress(),
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:param tree: The tree that will be transformed, but not necessarily
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:param pb: A ProgressTask 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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# mapping of trans_id -> new basename
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# mapping of trans_id -> new parent trans_id
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# mapping of trans_id with new contents -> new file_kind
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self._new_contents = {}
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# 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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# 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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"""Release the working tree lock, if held.
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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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def __get_root(self):
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return self._new_root
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root = property(__get_root)
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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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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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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 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 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 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 _check_malformed(self):
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conflicts = self.find_conflicts()
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if len(conflicts) != 0:
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raise MalformedTransform(conflicts=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 has_named_child(self, by_parent, parent_id, name):
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children = by_parent[parent_id]
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for child in children:
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if self.final_name(child) == name:
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path = self._tree_id_paths[parent_id]
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childpath = joinpath(path, name)
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child_id = self._tree_path_ids.get(childpath)
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return lexists(self._tree.abspath(childpath))
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if self.final_parent(child_id) != parent_id:
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if child_id in self._removed_contents:
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# XXX What about dangling file-ids?
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def _parent_loops(self):
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"""No entry should be its own ancestor"""
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for trans_id in self._new_parent:
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while parent_id is not ROOT_PARENT:
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parent_id = self.final_parent(parent_id)
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if parent_id == trans_id:
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conflicts.append(('parent loop', trans_id))
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if parent_id in seen:
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def _unversioned_parents(self, by_parent):
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"""If parent directories are versioned, children must be versioned."""
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for parent_id, children in by_parent.iteritems():
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if parent_id is ROOT_PARENT:
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if self.final_file_id(parent_id) is not None:
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for child_id in children:
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if self.final_file_id(child_id) is not None:
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conflicts.append(('unversioned parent', parent_id))
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def _improper_versioning(self):
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"""Cannot version a file with no contents, or a bad type.
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However, existing entries with no contents are okay.
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for trans_id in self._new_id.iterkeys():
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kind = self.final_kind(trans_id)
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conflicts.append(('versioning no contents', trans_id))
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if not InventoryEntry.versionable_kind(kind):
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conflicts.append(('versioning bad kind', trans_id, kind))
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def _executability_conflicts(self):
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"""Check for bad executability changes.
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Only versioned files may have their executability set, because
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1. only versioned entries can have executability under windows
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2. only files can be executable. (The execute bit on a directory
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does not indicate searchability)
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for trans_id in self._new_executability:
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if self.final_file_id(trans_id) is None:
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conflicts.append(('unversioned executability', trans_id))
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non_file = self.final_kind(trans_id) != "file"
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conflicts.append(('non-file executability', trans_id))
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def _overwrite_conflicts(self):
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"""Check for overwrites (not permitted on Win32)"""
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for trans_id in self._new_contents:
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self.tree_kind(trans_id)
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if trans_id not in self._removed_contents:
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conflicts.append(('overwrite', trans_id,
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self.final_name(trans_id)))
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def _duplicate_entries(self, by_parent):
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"""No directory may have two entries with the same name."""
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if (self._new_name, self._new_parent) == ({}, {}):
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for children in by_parent.itervalues():
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name_ids = [(self.final_name(t), t) for t in children]
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if not self._case_sensitive_target:
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name_ids = [(n.lower(), t) for n, t in name_ids]
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for name, trans_id in name_ids:
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kind = self.final_kind(trans_id)
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file_id = self.final_file_id(trans_id)
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if kind is None and file_id is None:
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if name == last_name:
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conflicts.append(('duplicate', last_trans_id, trans_id,
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last_trans_id = trans_id
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def _duplicate_ids(self):
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"""Each inventory id may only be used once"""
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removed_tree_ids = set((self.tree_file_id(trans_id) for trans_id in
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all_ids = self._tree.all_file_ids()
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active_tree_ids = all_ids.difference(removed_tree_ids)
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for trans_id, file_id in self._new_id.iteritems():
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if file_id in active_tree_ids:
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old_trans_id = self.trans_id_tree_file_id(file_id)
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conflicts.append(('duplicate id', old_trans_id, trans_id))
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def _parent_type_conflicts(self, by_parent):
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"""parents must have directory 'contents'."""
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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 not self._any_contents(children):
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for child in children:
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self.final_kind(child)
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kind = self.final_kind(parent_id)
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conflicts.append(('missing parent', parent_id))
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elif kind != "directory":
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conflicts.append(('non-directory parent', parent_id))
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def _any_contents(self, trans_ids):
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"""Return true if any of the trans_ids, will have contents."""
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for trans_id in trans_ids:
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kind = self.final_kind(trans_id)
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def _set_executability(self, path, trans_id):
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"""Set the executability of versioned files """
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if supports_executable():
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new_executability = self._new_executability[trans_id]
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abspath = self._tree.abspath(path)
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current_mode = os.stat(abspath).st_mode
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if new_executability:
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to_mode = current_mode | (0100 & ~umask)
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# Enable x-bit for others only if they can read it.
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if current_mode & 0004:
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to_mode |= 0001 & ~umask
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if current_mode & 0040:
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to_mode |= 0010 & ~umask
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to_mode = current_mode & ~0111
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os.chmod(abspath, to_mode)
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def _new_entry(self, name, parent_id, file_id):
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"""Helper function to create a new filesystem entry."""
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trans_id = self.create_path(name, parent_id)
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if file_id is not None:
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self.version_file(file_id, trans_id)
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def new_file(self, name, parent_id, contents, file_id=None,
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"""Convenience method to create files.
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name is the name of the file to create.
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parent_id is the transaction id of the parent directory of the file.
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contents is an iterator of bytestrings, which will be used to produce
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:param file_id: The inventory ID of the file, if it is to be versioned.
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:param executable: Only valid when a file_id has been supplied.
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trans_id = self._new_entry(name, parent_id, file_id)
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# TODO: rather than scheduling a set_executable call,
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# have create_file create the file with the right mode.
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self.create_file(contents, trans_id)
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if executable is not None:
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self.set_executability(executable, trans_id)
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def new_directory(self, name, parent_id, file_id=None):
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"""Convenience method to create directories.
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name is the name of the directory to create.
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parent_id is the transaction id of the parent directory of the
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file_id is the inventory ID of the directory, if it is to be versioned.
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trans_id = self._new_entry(name, parent_id, file_id)
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self.create_directory(trans_id)
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def new_symlink(self, name, parent_id, target, file_id=None):
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"""Convenience method to create symbolic link.
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name is the name of the symlink to create.
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parent_id is the transaction id of the parent directory of the symlink.
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target is a bytestring of the target of the symlink.
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file_id is the inventory ID of the file, if it is to be versioned.
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trans_id = self._new_entry(name, parent_id, file_id)
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self.create_symlink(target, trans_id)
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def _affected_ids(self):
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"""Return the set of transform ids affected by the transform"""
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trans_ids = set(self._removed_id)
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trans_ids.update(self._new_id.keys())
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trans_ids.update(self._removed_contents)
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trans_ids.update(self._new_contents.keys())
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trans_ids.update(self._new_executability.keys())
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trans_ids.update(self._new_name.keys())
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trans_ids.update(self._new_parent.keys())
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def _get_file_id_maps(self):
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"""Return mapping of file_ids to trans_ids in the to and from states"""
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trans_ids = self._affected_ids()
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# Build up two dicts: trans_ids associated with file ids in the
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# FROM state, vs the TO state.
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for trans_id in trans_ids:
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from_file_id = self.tree_file_id(trans_id)
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if from_file_id is not None:
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from_trans_ids[from_file_id] = trans_id
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to_file_id = self.final_file_id(trans_id)
743
if to_file_id is not None:
744
to_trans_ids[to_file_id] = trans_id
745
return from_trans_ids, to_trans_ids
747
def _from_file_data(self, from_trans_id, from_versioned, file_id):
748
"""Get data about a file in the from (tree) state
750
Return a (name, parent, kind, executable) tuple
752
from_path = self._tree_id_paths.get(from_trans_id)
754
# get data from working tree if versioned
755
from_entry = self._tree.iter_entries_by_dir([file_id]).next()[1]
756
from_name = from_entry.name
757
from_parent = from_entry.parent_id
760
if from_path is None:
761
# File does not exist in FROM state
765
# File exists, but is not versioned. Have to use path-
767
from_name = os.path.basename(from_path)
768
tree_parent = self.get_tree_parent(from_trans_id)
769
from_parent = self.tree_file_id(tree_parent)
770
if from_path is not None:
771
from_kind, from_executable, from_stats = \
772
self._tree._comparison_data(from_entry, from_path)
775
from_executable = False
776
return from_name, from_parent, from_kind, from_executable
778
def _to_file_data(self, to_trans_id, from_trans_id, from_executable):
779
"""Get data about a file in the to (target) state
781
Return a (name, parent, kind, executable) tuple
783
to_name = self.final_name(to_trans_id)
785
to_kind = self.final_kind(to_trans_id)
788
to_parent = self.final_file_id(self.final_parent(to_trans_id))
789
if to_trans_id in self._new_executability:
790
to_executable = self._new_executability[to_trans_id]
791
elif to_trans_id == from_trans_id:
792
to_executable = from_executable
794
to_executable = False
795
return to_name, to_parent, to_kind, to_executable
797
def iter_changes(self):
798
"""Produce output in the same format as Tree.iter_changes.
800
Will produce nonsensical results if invoked while inventory/filesystem
801
conflicts (as reported by TreeTransform.find_conflicts()) are present.
803
This reads the Transform, but only reproduces changes involving a
804
file_id. Files that are not versioned in either of the FROM or TO
805
states are not reflected.
807
final_paths = FinalPaths(self)
808
from_trans_ids, to_trans_ids = self._get_file_id_maps()
810
# Now iterate through all active file_ids
811
for file_id in set(from_trans_ids.keys() + to_trans_ids.keys()):
813
from_trans_id = from_trans_ids.get(file_id)
814
# find file ids, and determine versioning state
815
if from_trans_id is None:
816
from_versioned = False
817
from_trans_id = to_trans_ids[file_id]
819
from_versioned = True
820
to_trans_id = to_trans_ids.get(file_id)
821
if to_trans_id is None:
823
to_trans_id = from_trans_id
827
from_name, from_parent, from_kind, from_executable = \
828
self._from_file_data(from_trans_id, from_versioned, file_id)
830
to_name, to_parent, to_kind, to_executable = \
831
self._to_file_data(to_trans_id, from_trans_id, from_executable)
833
if not from_versioned:
836
from_path = self._tree_id_paths.get(from_trans_id)
840
to_path = final_paths.get_path(to_trans_id)
841
if from_kind != to_kind:
843
elif to_kind in ('file', 'symlink') and (
844
to_trans_id != from_trans_id or
845
to_trans_id in self._new_contents):
847
if (not modified and from_versioned == to_versioned and
848
from_parent==to_parent and from_name == to_name and
849
from_executable == to_executable):
851
results.append((file_id, (from_path, to_path), modified,
852
(from_versioned, to_versioned),
853
(from_parent, to_parent),
854
(from_name, to_name),
855
(from_kind, to_kind),
856
(from_executable, to_executable)))
857
return iter(sorted(results, key=lambda x:x[1]))
859
def get_preview_tree(self):
860
"""Return a tree representing the result of the transform.
862
This tree only supports the subset of Tree functionality required
863
by show_diff_trees. It must only be compared to tt._tree.
865
return _PreviewTree(self)
867
def commit(self, branch, message, merge_parents=None, strict=False):
868
"""Commit the result of this TreeTransform to a branch.
870
:param branch: The branch to commit to.
871
:param message: The message to attach to the commit.
872
:param merge_parents: Additional parents specified by pending merges.
873
:return: The revision_id of the revision committed.
875
self._check_malformed()
877
unversioned = set(self._new_contents).difference(set(self._new_id))
878
for trans_id in unversioned:
879
if self.final_file_id(trans_id) is None:
880
raise errors.StrictCommitFailed()
882
revno, last_rev_id = branch.last_revision_info()
883
if last_rev_id == _mod_revision.NULL_REVISION:
884
if merge_parents is not None:
885
raise ValueError('Cannot supply merge parents for first'
889
parent_ids = [last_rev_id]
890
if merge_parents is not None:
891
parent_ids.extend(merge_parents)
892
if self._tree.get_revision_id() != last_rev_id:
893
raise ValueError('TreeTransform not based on branch basis: %s' %
894
self._tree.get_revision_id())
895
builder = branch.get_commit_builder(parent_ids)
896
preview = self.get_preview_tree()
897
list(builder.record_iter_changes(preview, last_rev_id,
898
self.iter_changes()))
899
builder.finish_inventory()
900
revision_id = builder.commit(message)
901
branch.set_last_revision_info(revno + 1, revision_id)
904
def _text_parent(self, trans_id):
905
file_id = self.tree_file_id(trans_id)
907
if file_id is None or self._tree.kind(file_id) != 'file':
909
except errors.NoSuchFile:
913
def _get_parents_texts(self, trans_id):
914
"""Get texts for compression parents of this file."""
915
file_id = self._text_parent(trans_id)
918
return (self._tree.get_file_text(file_id),)
920
def _get_parents_lines(self, trans_id):
921
"""Get lines for compression parents of this file."""
922
file_id = self._text_parent(trans_id)
925
return (self._tree.get_file_lines(file_id),)
927
def serialize(self, serializer):
928
"""Serialize this TreeTransform.
930
:param serializer: A Serialiser like pack.ContainerSerializer.
932
new_name = dict((k, v.encode('utf-8')) for k, v in
933
self._new_name.items())
934
new_executability = dict((k, int(v)) for k, v in
935
self._new_executability.items())
936
tree_path_ids = dict((k.encode('utf-8'), v)
937
for k, v in self._tree_path_ids.items())
939
'_id_number': self._id_number,
940
'_new_name': new_name,
941
'_new_parent': self._new_parent,
942
'_new_executability': new_executability,
943
'_new_id': self._new_id,
944
'_tree_path_ids': tree_path_ids,
945
'_removed_id': list(self._removed_id),
946
'_removed_contents': list(self._removed_contents),
947
'_non_present_ids': self._non_present_ids,
949
yield serializer.bytes_record(bencode.bencode(attribs),
951
for trans_id, kind in self._new_contents.items():
953
lines = osutils.chunks_to_lines(
954
self._read_file_chunks(trans_id))
955
parents = self._get_parents_lines(trans_id)
956
mpdiff = multiparent.MultiParent.from_lines(lines, parents)
957
content = ''.join(mpdiff.to_patch())
958
if kind == 'directory':
960
if kind == 'symlink':
961
content = self._read_symlink_target(trans_id)
962
yield serializer.bytes_record(content, ((trans_id, kind),))
964
def deserialize(self, records):
965
"""Deserialize a stored TreeTransform.
967
:param records: An iterable of (names, content) tuples, as per
968
pack.ContainerPushParser.
970
names, content = records.next()
971
attribs = bencode.bdecode(content)
972
self._id_number = attribs['_id_number']
973
self._new_name = dict((k, v.decode('utf-8'))
974
for k, v in attribs['_new_name'].items())
975
self._new_parent = attribs['_new_parent']
976
self._new_executability = dict((k, bool(v)) for k, v in
977
attribs['_new_executability'].items())
978
self._new_id = attribs['_new_id']
979
self._r_new_id = dict((v, k) for k, v in self._new_id.items())
980
self._tree_path_ids = {}
981
self._tree_id_paths = {}
982
for bytepath, trans_id in attribs['_tree_path_ids'].items():
983
path = bytepath.decode('utf-8')
984
self._tree_path_ids[path] = trans_id
985
self._tree_id_paths[trans_id] = path
986
self._removed_id = set(attribs['_removed_id'])
987
self._removed_contents = set(attribs['_removed_contents'])
988
self._non_present_ids = attribs['_non_present_ids']
989
for ((trans_id, kind),), content in records:
991
mpdiff = multiparent.MultiParent.from_patch(content)
992
lines = mpdiff.to_lines(self._get_parents_texts(trans_id))
993
self.create_file(lines, trans_id)
994
if kind == 'directory':
995
self.create_directory(trans_id)
996
if kind == 'symlink':
997
self.create_symlink(content.decode('utf-8'), trans_id)
1000
class DiskTreeTransform(TreeTransformBase):
1001
"""Tree transform storing its contents on disk."""
1003
def __init__(self, tree, limbodir, pb=DummyProgress(),
1004
case_sensitive=True):
1006
:param tree: The tree that will be transformed, but not necessarily
1008
:param limbodir: A directory where new files can be stored until
1009
they are installed in their proper places
1010
:param pb: A ProgressBar indicating how much progress is being made
1011
:param case_sensitive: If True, the target of the transform is
1012
case sensitive, not just case preserving.
1014
TreeTransformBase.__init__(self, tree, pb, case_sensitive)
1015
self._limbodir = limbodir
1016
self._deletiondir = None
1017
# A mapping of transform ids to their limbo filename
1018
self._limbo_files = {}
1019
# A mapping of transform ids to a set of the transform ids of children
1020
# that their limbo directory has
1021
self._limbo_children = {}
1022
# Map transform ids to maps of child filename to child transform id
1023
self._limbo_children_names = {}
1024
# List of transform ids that need to be renamed from limbo into place
1025
self._needs_rename = set()
1028
"""Release the working tree lock, if held, clean up limbo dir.
1030
This is required if apply has not been invoked, but can be invoked
1033
if self._tree is None:
1036
entries = [(self._limbo_name(t), t, k) for t, k in
1037
self._new_contents.iteritems()]
1038
entries.sort(reverse=True)
1039
for path, trans_id, kind in entries:
1042
delete_any(self._limbodir)
1044
# We don't especially care *why* the dir is immortal.
1045
raise ImmortalLimbo(self._limbodir)
1047
if self._deletiondir is not None:
1048
delete_any(self._deletiondir)
1050
raise errors.ImmortalPendingDeletion(self._deletiondir)
1052
TreeTransformBase.finalize(self)
1054
def _limbo_name(self, trans_id):
1055
"""Generate the limbo name of a file"""
1056
limbo_name = self._limbo_files.get(trans_id)
1057
if limbo_name is not None:
1059
parent = self._new_parent.get(trans_id)
1060
# if the parent directory is already in limbo (e.g. when building a
1061
# tree), choose a limbo name inside the parent, to reduce further
1063
use_direct_path = False
1064
if self._new_contents.get(parent) == 'directory':
1065
filename = self._new_name.get(trans_id)
1066
if filename is not None:
1067
if parent not in self._limbo_children:
1068
self._limbo_children[parent] = set()
1069
self._limbo_children_names[parent] = {}
1070
use_direct_path = True
1071
# the direct path can only be used if no other file has
1072
# already taken this pathname, i.e. if the name is unused, or
1073
# if it is already associated with this trans_id.
1074
elif self._case_sensitive_target:
1075
if (self._limbo_children_names[parent].get(filename)
1076
in (trans_id, None)):
1077
use_direct_path = True
1079
for l_filename, l_trans_id in\
1080
self._limbo_children_names[parent].iteritems():
1081
if l_trans_id == trans_id:
1083
if l_filename.lower() == filename.lower():
1086
use_direct_path = True
1089
limbo_name = pathjoin(self._limbo_files[parent], filename)
1090
self._limbo_children[parent].add(trans_id)
1091
self._limbo_children_names[parent][filename] = trans_id
1093
limbo_name = pathjoin(self._limbodir, trans_id)
1094
self._needs_rename.add(trans_id)
1095
self._limbo_files[trans_id] = limbo_name
1098
def adjust_path(self, name, parent, trans_id):
1099
previous_parent = self._new_parent.get(trans_id)
1100
previous_name = self._new_name.get(trans_id)
1101
TreeTransformBase.adjust_path(self, name, parent, trans_id)
1102
if (trans_id in self._limbo_files and
1103
trans_id not in self._needs_rename):
1104
self._rename_in_limbo([trans_id])
1105
self._limbo_children[previous_parent].remove(trans_id)
1106
del self._limbo_children_names[previous_parent][previous_name]
1108
def _rename_in_limbo(self, trans_ids):
1109
"""Fix limbo names so that the right final path is produced.
1111
This means we outsmarted ourselves-- we tried to avoid renaming
1112
these files later by creating them with their final names in their
1113
final parents. But now the previous name or parent is no longer
1114
suitable, so we have to rename them.
1116
Even for trans_ids that have no new contents, we must remove their
1117
entries from _limbo_files, because they are now stale.
1119
for trans_id in trans_ids:
1120
old_path = self._limbo_files.pop(trans_id)
1121
if trans_id not in self._new_contents:
1123
new_path = self._limbo_name(trans_id)
1124
os.rename(old_path, new_path)
1126
def create_file(self, contents, trans_id, mode_id=None):
1127
"""Schedule creation of a new file.
1131
Contents is an iterator of strings, all of which will be written
1132
to the target destination.
1134
New file takes the permissions of any existing file with that id,
1135
unless mode_id is specified.
1137
name = self._limbo_name(trans_id)
1138
f = open(name, 'wb')
1141
unique_add(self._new_contents, trans_id, 'file')
1143
# Clean up the file, it never got registered so
1144
# TreeTransform.finalize() won't clean it up.
1149
f.writelines(contents)
1152
self._set_mode(trans_id, mode_id, S_ISREG)
1154
def _read_file_chunks(self, trans_id):
1155
cur_file = open(self._limbo_name(trans_id), 'rb')
1157
return cur_file.readlines()
1161
def _read_symlink_target(self, trans_id):
1162
return os.readlink(self._limbo_name(trans_id))
1164
def create_hardlink(self, path, trans_id):
1165
"""Schedule creation of a hard link"""
1166
name = self._limbo_name(trans_id)
1170
if e.errno != errno.EPERM:
1172
raise errors.HardLinkNotSupported(path)
1174
unique_add(self._new_contents, trans_id, 'file')
1176
# Clean up the file, it never got registered so
1177
# TreeTransform.finalize() won't clean it up.
1181
def create_directory(self, trans_id):
1182
"""Schedule creation of a new directory.
1184
See also new_directory.
1186
os.mkdir(self._limbo_name(trans_id))
1187
unique_add(self._new_contents, trans_id, 'directory')
1189
def create_symlink(self, target, trans_id):
1190
"""Schedule creation of a new symbolic link.
1192
target is a bytestring.
1193
See also new_symlink.
1196
os.symlink(target, self._limbo_name(trans_id))
1197
unique_add(self._new_contents, trans_id, 'symlink')
1200
path = FinalPaths(self).get_path(trans_id)
1203
raise UnableCreateSymlink(path=path)
1205
def cancel_creation(self, trans_id):
1206
"""Cancel the creation of new file contents."""
1207
del self._new_contents[trans_id]
1208
children = self._limbo_children.get(trans_id)
1209
# if this is a limbo directory with children, move them before removing
1211
if children is not None:
1212
self._rename_in_limbo(children)
1213
del self._limbo_children[trans_id]
1214
del self._limbo_children_names[trans_id]
1215
delete_any(self._limbo_name(trans_id))
1218
class TreeTransform(DiskTreeTransform):
1219
"""Represent a tree transformation.
1221
This object is designed to support incremental generation of the transform,
1224
However, it gives optimum performance when parent directories are created
1225
before their contents. The transform is then able to put child files
1226
directly in their parent directory, avoiding later renames.
1228
It is easy to produce malformed transforms, but they are generally
1229
harmless. Attempting to apply a malformed transform will cause an
1230
exception to be raised before any modifications are made to the tree.
1232
Many kinds of malformed transforms can be corrected with the
1233
resolve_conflicts function. The remaining ones indicate programming error,
1234
such as trying to create a file with no path.
1236
Two sets of file creation methods are supplied. Convenience methods are:
1241
These are composed of the low-level methods:
1243
* create_file or create_directory or create_symlink
1247
Transform/Transaction ids
1248
-------------------------
1249
trans_ids are temporary ids assigned to all files involved in a transform.
1250
It's possible, even common, that not all files in the Tree have trans_ids.
1252
trans_ids are used because filenames and file_ids are not good enough
1253
identifiers; filenames change, and not all files have file_ids. File-ids
1254
are also associated with trans-ids, so that moving a file moves its
1257
trans_ids are only valid for the TreeTransform that generated them.
1261
Limbo is a temporary directory use to hold new versions of files.
1262
Files are added to limbo by create_file, create_directory, create_symlink,
1263
and their convenience variants (new_*). Files may be removed from limbo
1264
using cancel_creation. Files are renamed from limbo into their final
1265
location as part of TreeTransform.apply
1267
Limbo must be cleaned up, by either calling TreeTransform.apply or
1268
calling TreeTransform.finalize.
1270
Files are placed into limbo inside their parent directories, where
1271
possible. This reduces subsequent renames, and makes operations involving
1272
lots of files faster. This optimization is only possible if the parent
1273
directory is created *before* creating any of its children, so avoid
1274
creating children before parents, where possible.
1278
This temporary directory is used by _FileMover for storing files that are
1279
about to be deleted. In case of rollback, the files will be restored.
1280
FileMover does not delete files until it is sure that a rollback will not
1283
def __init__(self, tree, pb=DummyProgress()):
1284
"""Note: a tree_write lock is taken on the tree.
1286
Use TreeTransform.finalize() to release the lock (can be omitted if
1287
TreeTransform.apply() called).
1289
tree.lock_tree_write()
1292
limbodir = urlutils.local_path_from_url(
1293
tree._transport.abspath('limbo'))
1297
if e.errno == errno.EEXIST:
1298
raise ExistingLimbo(limbodir)
1299
deletiondir = urlutils.local_path_from_url(
1300
tree._transport.abspath('pending-deletion'))
1302
os.mkdir(deletiondir)
1304
if e.errno == errno.EEXIST:
1305
raise errors.ExistingPendingDeletion(deletiondir)
1310
# Cache of realpath results, to speed up canonical_path
1311
self._realpaths = {}
1312
# Cache of relpath results, to speed up canonical_path
1314
DiskTreeTransform.__init__(self, tree, limbodir, pb,
1315
tree.case_sensitive)
1316
self._deletiondir = deletiondir
1318
def canonical_path(self, path):
1319
"""Get the canonical tree-relative path"""
1320
# don't follow final symlinks
1321
abs = self._tree.abspath(path)
1322
if abs in self._relpaths:
1323
return self._relpaths[abs]
1324
dirname, basename = os.path.split(abs)
1325
if dirname not in self._realpaths:
1326
self._realpaths[dirname] = os.path.realpath(dirname)
1327
dirname = self._realpaths[dirname]
1328
abs = pathjoin(dirname, basename)
1329
if dirname in self._relpaths:
1330
relpath = pathjoin(self._relpaths[dirname], basename)
1331
relpath = relpath.rstrip('/\\')
1333
relpath = self._tree.relpath(abs)
1334
self._relpaths[abs] = relpath
1337
def tree_kind(self, trans_id):
1338
"""Determine the file kind in the working tree.
1340
Raises NoSuchFile if the file does not exist
1342
path = self._tree_id_paths.get(trans_id)
1344
raise NoSuchFile(None)
1346
return file_kind(self._tree.abspath(path))
1348
if e.errno != errno.ENOENT:
1351
raise NoSuchFile(path)
1353
def _set_mode(self, trans_id, mode_id, typefunc):
1354
"""Set the mode of new file contents.
1355
The mode_id is the existing file to get the mode from (often the same
1356
as trans_id). The operation is only performed if there's a mode match
1357
according to typefunc.
1362
old_path = self._tree_id_paths[mode_id]
1366
mode = os.stat(self._tree.abspath(old_path)).st_mode
1368
if e.errno in (errno.ENOENT, errno.ENOTDIR):
1369
# Either old_path doesn't exist, or the parent of the
1370
# target is not a directory (but will be one eventually)
1371
# Either way, we know it doesn't exist *right now*
1372
# See also bug #248448
1377
os.chmod(self._limbo_name(trans_id), mode)
1379
def iter_tree_children(self, parent_id):
1380
"""Iterate through the entry's tree children, if any"""
1382
path = self._tree_id_paths[parent_id]
1386
children = os.listdir(self._tree.abspath(path))
1388
if not (osutils._is_error_enotdir(e)
1389
or e.errno in (errno.ENOENT, errno.ESRCH)):
1393
for child in children:
1394
childpath = joinpath(path, child)
1395
if self._tree.is_control_filename(childpath):
1397
yield self.trans_id_tree_path(childpath)
1399
def apply(self, no_conflicts=False, precomputed_delta=None, _mover=None):
1400
"""Apply all changes to the inventory and filesystem.
1402
If filesystem or inventory conflicts are present, MalformedTransform
1405
If apply succeeds, finalize is not necessary.
1407
:param no_conflicts: if True, the caller guarantees there are no
1408
conflicts, so no check is made.
1409
:param precomputed_delta: An inventory delta to use instead of
1411
:param _mover: Supply an alternate FileMover, for testing
1413
if not no_conflicts:
1414
self._check_malformed()
1415
child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
1417
if precomputed_delta is None:
1418
child_pb.update('Apply phase', 0, 2)
1419
inventory_delta = self._generate_inventory_delta()
1422
inventory_delta = precomputed_delta
1425
mover = _FileMover()
1429
child_pb.update('Apply phase', 0 + offset, 2 + offset)
1430
self._apply_removals(mover)
1431
child_pb.update('Apply phase', 1 + offset, 2 + offset)
1432
modified_paths = self._apply_insertions(mover)
1437
mover.apply_deletions()
1440
self._tree.apply_inventory_delta(inventory_delta)
1443
return _TransformResults(modified_paths, self.rename_count)
1445
def _generate_inventory_delta(self):
1446
"""Generate an inventory delta for the current transform."""
1447
inventory_delta = []
1448
child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
1449
new_paths = self._inventory_altered()
1450
total_entries = len(new_paths) + len(self._removed_id)
1452
for num, trans_id in enumerate(self._removed_id):
1454
child_pb.update('removing file', num, total_entries)
1455
if trans_id == self._new_root:
1456
file_id = self._tree.get_root_id()
1458
file_id = self.tree_file_id(trans_id)
1459
# File-id isn't really being deleted, just moved
1460
if file_id in self._r_new_id:
1462
path = self._tree_id_paths[trans_id]
1463
inventory_delta.append((path, None, file_id, None))
1464
new_path_file_ids = dict((t, self.final_file_id(t)) for p, t in
1466
entries = self._tree.iter_entries_by_dir(
1467
new_path_file_ids.values())
1468
old_paths = dict((e.file_id, p) for p, e in entries)
1470
for num, (path, trans_id) in enumerate(new_paths):
1472
child_pb.update('adding file',
1473
num + len(self._removed_id), total_entries)
1474
file_id = new_path_file_ids[trans_id]
1479
kind = self.final_kind(trans_id)
1481
kind = self._tree.stored_kind(file_id)
1482
parent_trans_id = self.final_parent(trans_id)
1483
parent_file_id = new_path_file_ids.get(parent_trans_id)
1484
if parent_file_id is None:
1485
parent_file_id = self.final_file_id(parent_trans_id)
1486
if trans_id in self._new_reference_revision:
1487
new_entry = inventory.TreeReference(
1489
self._new_name[trans_id],
1490
self.final_file_id(self._new_parent[trans_id]),
1491
None, self._new_reference_revision[trans_id])
1493
new_entry = inventory.make_entry(kind,
1494
self.final_name(trans_id),
1495
parent_file_id, file_id)
1496
old_path = old_paths.get(new_entry.file_id)
1497
new_executability = self._new_executability.get(trans_id)
1498
if new_executability is not None:
1499
new_entry.executable = new_executability
1500
inventory_delta.append(
1501
(old_path, path, new_entry.file_id, new_entry))
1504
return inventory_delta
1506
def _apply_removals(self, mover):
1507
"""Perform tree operations that remove directory/inventory names.
1509
That is, delete files that are to be deleted, and put any files that
1510
need renaming into limbo. This must be done in strict child-to-parent
1513
If inventory_delta is None, no inventory delta generation is performed.
1515
tree_paths = list(self._tree_path_ids.iteritems())
1516
tree_paths.sort(reverse=True)
1517
child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
1519
for num, data in enumerate(tree_paths):
1520
path, trans_id = data
1521
child_pb.update('removing file', num, len(tree_paths))
1522
full_path = self._tree.abspath(path)
1523
if trans_id in self._removed_contents:
1524
mover.pre_delete(full_path, os.path.join(self._deletiondir,
1526
elif trans_id in self._new_name or trans_id in \
1529
mover.rename(full_path, self._limbo_name(trans_id))
1531
if e.errno != errno.ENOENT:
1534
self.rename_count += 1
1538
def _apply_insertions(self, mover):
1539
"""Perform tree operations that insert directory/inventory names.
1541
That is, create any files that need to be created, and restore from
1542
limbo any files that needed renaming. This must be done in strict
1543
parent-to-child order.
1545
If inventory_delta is None, no inventory delta is calculated, and
1546
no list of modified paths is returned.
1548
new_paths = self.new_paths(filesystem_only=True)
1550
new_path_file_ids = dict((t, self.final_file_id(t)) for p, t in
1552
child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
1554
for num, (path, trans_id) in enumerate(new_paths):
1556
child_pb.update('adding file', num, len(new_paths))
1557
full_path = self._tree.abspath(path)
1558
if trans_id in self._needs_rename:
1560
mover.rename(self._limbo_name(trans_id), full_path)
1562
# We may be renaming a dangling inventory id
1563
if e.errno != errno.ENOENT:
1566
self.rename_count += 1
1567
if (trans_id in self._new_contents or
1568
self.path_changed(trans_id)):
1569
if trans_id in self._new_contents:
1570
modified_paths.append(full_path)
1571
if trans_id in self._new_executability:
1572
self._set_executability(path, trans_id)
1575
self._new_contents.clear()
1576
return modified_paths
1579
class TransformPreview(DiskTreeTransform):
1580
"""A TreeTransform for generating preview trees.
1582
Unlike TreeTransform, this version works when the input tree is a
1583
RevisionTree, rather than a WorkingTree. As a result, it tends to ignore
1584
unversioned files in the input tree.
1587
def __init__(self, tree, pb=DummyProgress(), case_sensitive=True):
1589
limbodir = osutils.mkdtemp(prefix='bzr-limbo-')
1590
DiskTreeTransform.__init__(self, tree, limbodir, pb, case_sensitive)
1592
def canonical_path(self, path):
1595
def tree_kind(self, trans_id):
1596
path = self._tree_id_paths.get(trans_id)
1598
raise NoSuchFile(None)
1599
file_id = self._tree.path2id(path)
1600
return self._tree.kind(file_id)
1602
def _set_mode(self, trans_id, mode_id, typefunc):
1603
"""Set the mode of new file contents.
1604
The mode_id is the existing file to get the mode from (often the same
1605
as trans_id). The operation is only performed if there's a mode match
1606
according to typefunc.
1608
# is it ok to ignore this? probably
1611
def iter_tree_children(self, parent_id):
1612
"""Iterate through the entry's tree children, if any"""
1614
path = self._tree_id_paths[parent_id]
1617
file_id = self.tree_file_id(parent_id)
1620
entry = self._tree.iter_entries_by_dir([file_id]).next()[1]
1621
children = getattr(entry, 'children', {})
1622
for child in children:
1623
childpath = joinpath(path, child)
1624
yield self.trans_id_tree_path(childpath)
1627
class _PreviewTree(tree.Tree):
1628
"""Partial implementation of Tree to support show_diff_trees"""
1630
def __init__(self, transform):
1631
self._transform = transform
1632
self._final_paths = FinalPaths(transform)
1633
self.__by_parent = None
1634
self._parent_ids = []
1635
self._all_children_cache = {}
1636
self._path2trans_id_cache = {}
1637
self._final_name_cache = {}
1639
def _changes(self, file_id):
1640
for changes in self._transform.iter_changes():
1641
if changes[0] == file_id:
1644
def _content_change(self, file_id):
1645
"""Return True if the content of this file changed"""
1646
changes = self._changes(file_id)
1647
# changes[2] is true if the file content changed. See
1648
# InterTree.iter_changes.
1649
return (changes is not None and changes[2])
1651
def _get_repository(self):
1652
repo = getattr(self._transform._tree, '_repository', None)
1654
repo = self._transform._tree.branch.repository
1657
def _iter_parent_trees(self):
1658
for revision_id in self.get_parent_ids():
1660
yield self.revision_tree(revision_id)
1661
except errors.NoSuchRevisionInTree:
1662
yield self._get_repository().revision_tree(revision_id)
1664
def _get_file_revision(self, file_id, vf, tree_revision):
1665
parent_keys = [(file_id, self._file_revision(t, file_id)) for t in
1666
self._iter_parent_trees()]
1667
vf.add_lines((file_id, tree_revision), parent_keys,
1668
self.get_file(file_id).readlines())
1669
repo = self._get_repository()
1670
base_vf = repo.texts
1671
if base_vf not in vf.fallback_versionedfiles:
1672
vf.fallback_versionedfiles.append(base_vf)
1673
return tree_revision
1675
def _stat_limbo_file(self, file_id):
1676
trans_id = self._transform.trans_id_file_id(file_id)
1677
name = self._transform._limbo_name(trans_id)
1678
return os.lstat(name)
1681
def _by_parent(self):
1682
if self.__by_parent is None:
1683
self.__by_parent = self._transform.by_parent()
1684
return self.__by_parent
1686
def _comparison_data(self, entry, path):
1687
kind, size, executable, link_or_sha1 = self.path_content_summary(path)
1688
if kind == 'missing':
1692
file_id = self._transform.final_file_id(self._path2trans_id(path))
1693
executable = self.is_executable(file_id, path)
1694
return kind, executable, None
1696
def lock_read(self):
1697
# Perhaps in theory, this should lock the TreeTransform?
1704
def inventory(self):
1705
"""This Tree does not use inventory as its backing data."""
1706
raise NotImplementedError(_PreviewTree.inventory)
1708
def get_root_id(self):
1709
return self._transform.final_file_id(self._transform.root)
1711
def all_file_ids(self):
1712
tree_ids = set(self._transform._tree.all_file_ids())
1713
tree_ids.difference_update(self._transform.tree_file_id(t)
1714
for t in self._transform._removed_id)
1715
tree_ids.update(self._transform._new_id.values())
1719
return iter(self.all_file_ids())
1721
def _has_id(self, file_id, fallback_check):
1722
if file_id in self._transform._r_new_id:
1724
elif file_id in set([self._transform.tree_file_id(trans_id) for
1725
trans_id in self._transform._removed_id]):
1728
return fallback_check(file_id)
1730
def has_id(self, file_id):
1731
return self._has_id(file_id, self._transform._tree.has_id)
1733
def has_or_had_id(self, file_id):
1734
return self._has_id(file_id, self._transform._tree.has_or_had_id)
1736
def _path2trans_id(self, path):
1737
# We must not use None here, because that is a valid value to store.
1738
trans_id = self._path2trans_id_cache.get(path, object)
1739
if trans_id is not object:
1741
segments = splitpath(path)
1742
cur_parent = self._transform.root
1743
for cur_segment in segments:
1744
for child in self._all_children(cur_parent):
1745
final_name = self._final_name_cache.get(child)
1746
if final_name is None:
1747
final_name = self._transform.final_name(child)
1748
self._final_name_cache[child] = final_name
1749
if final_name == cur_segment:
1753
self._path2trans_id_cache[path] = None
1755
self._path2trans_id_cache[path] = cur_parent
1758
def path2id(self, path):
1759
return self._transform.final_file_id(self._path2trans_id(path))
1761
def id2path(self, file_id):
1762
trans_id = self._transform.trans_id_file_id(file_id)
1764
return self._final_paths._determine_path(trans_id)
1766
raise errors.NoSuchId(self, file_id)
1768
def _all_children(self, trans_id):
1769
children = self._all_children_cache.get(trans_id)
1770
if children is not None:
1772
children = set(self._transform.iter_tree_children(trans_id))
1773
# children in the _new_parent set are provided by _by_parent.
1774
children.difference_update(self._transform._new_parent.keys())
1775
children.update(self._by_parent.get(trans_id, []))
1776
self._all_children_cache[trans_id] = children
1779
def iter_children(self, file_id):
1780
trans_id = self._transform.trans_id_file_id(file_id)
1781
for child_trans_id in self._all_children(trans_id):
1782
yield self._transform.final_file_id(child_trans_id)
1785
possible_extras = set(self._transform.trans_id_tree_path(p) for p
1786
in self._transform._tree.extras())
1787
possible_extras.update(self._transform._new_contents)
1788
possible_extras.update(self._transform._removed_id)
1789
for trans_id in possible_extras:
1790
if self._transform.final_file_id(trans_id) is None:
1791
yield self._final_paths._determine_path(trans_id)
1793
def _make_inv_entries(self, ordered_entries, specific_file_ids=None,
1794
yield_parents=False):
1795
for trans_id, parent_file_id in ordered_entries:
1796
file_id = self._transform.final_file_id(trans_id)
1799
if (specific_file_ids is not None
1800
and file_id not in specific_file_ids):
1803
kind = self._transform.final_kind(trans_id)
1805
kind = self._transform._tree.stored_kind(file_id)
1806
new_entry = inventory.make_entry(
1808
self._transform.final_name(trans_id),
1809
parent_file_id, file_id)
1810
yield new_entry, trans_id
1812
def _list_files_by_dir(self):
1813
todo = [ROOT_PARENT]
1815
while len(todo) > 0:
1817
parent_file_id = self._transform.final_file_id(parent)
1818
children = list(self._all_children(parent))
1819
paths = dict(zip(children, self._final_paths.get_paths(children)))
1820
children.sort(key=paths.get)
1821
todo.extend(reversed(children))
1822
for trans_id in children:
1823
ordered_ids.append((trans_id, parent_file_id))
1826
def iter_entries_by_dir(self, specific_file_ids=None, yield_parents=False):
1827
# This may not be a maximally efficient implementation, but it is
1828
# reasonably straightforward. An implementation that grafts the
1829
# TreeTransform changes onto the tree's iter_entries_by_dir results
1830
# might be more efficient, but requires tricky inferences about stack
1832
ordered_ids = self._list_files_by_dir()
1833
for entry, trans_id in self._make_inv_entries(ordered_ids,
1834
specific_file_ids, yield_parents=yield_parents):
1835
yield unicode(self._final_paths.get_path(trans_id)), entry
1837
def _iter_entries_for_dir(self, dir_path):
1838
"""Return path, entry for items in a directory without recursing down."""
1839
dir_file_id = self.path2id(dir_path)
1841
for file_id in self.iter_children(dir_file_id):
1842
trans_id = self._transform.trans_id_file_id(file_id)
1843
ordered_ids.append((trans_id, file_id))
1844
for entry, trans_id in self._make_inv_entries(ordered_ids):
1845
yield unicode(self._final_paths.get_path(trans_id)), entry
1847
def list_files(self, include_root=False, from_dir=None, recursive=True):
1848
"""See WorkingTree.list_files."""
1849
# XXX This should behave like WorkingTree.list_files, but is really
1850
# more like RevisionTree.list_files.
1854
prefix = from_dir + '/'
1855
entries = self.iter_entries_by_dir()
1856
for path, entry in entries:
1857
if entry.name == '' and not include_root:
1860
if not path.startswith(prefix):
1862
path = path[len(prefix):]
1863
yield path, 'V', entry.kind, entry.file_id, entry
1865
if from_dir is None and include_root is True:
1866
root_entry = inventory.make_entry('directory', '',
1867
ROOT_PARENT, self.get_root_id())
1868
yield '', 'V', 'directory', root_entry.file_id, root_entry
1869
entries = self._iter_entries_for_dir(from_dir or '')
1870
for path, entry in entries:
1871
yield path, 'V', entry.kind, entry.file_id, entry
1873
def kind(self, file_id):
1874
trans_id = self._transform.trans_id_file_id(file_id)
1875
return self._transform.final_kind(trans_id)
1877
def stored_kind(self, file_id):
1878
trans_id = self._transform.trans_id_file_id(file_id)
1880
return self._transform._new_contents[trans_id]
1882
return self._transform._tree.stored_kind(file_id)
1884
def get_file_mtime(self, file_id, path=None):
1885
"""See Tree.get_file_mtime"""
1886
if not self._content_change(file_id):
1887
return self._transform._tree.get_file_mtime(file_id, path)
1888
return self._stat_limbo_file(file_id).st_mtime
1890
def _file_size(self, entry, stat_value):
1891
return self.get_file_size(entry.file_id)
1893
def get_file_size(self, file_id):
1894
"""See Tree.get_file_size"""
1895
if self.kind(file_id) == 'file':
1896
return self._transform._tree.get_file_size(file_id)
1900
def get_file_sha1(self, file_id, path=None, stat_value=None):
1901
trans_id = self._transform.trans_id_file_id(file_id)
1902
kind = self._transform._new_contents.get(trans_id)
1904
return self._transform._tree.get_file_sha1(file_id)
1906
fileobj = self.get_file(file_id)
1908
return sha_file(fileobj)
1912
def is_executable(self, file_id, path=None):
1915
trans_id = self._transform.trans_id_file_id(file_id)
1917
return self._transform._new_executability[trans_id]
1920
return self._transform._tree.is_executable(file_id, path)
1922
if e.errno == errno.ENOENT:
1925
except errors.NoSuchId:
1928
def path_content_summary(self, path):
1929
trans_id = self._path2trans_id(path)
1930
tt = self._transform
1931
tree_path = tt._tree_id_paths.get(trans_id)
1932
kind = tt._new_contents.get(trans_id)
1934
if tree_path is None or trans_id in tt._removed_contents:
1935
return 'missing', None, None, None
1936
summary = tt._tree.path_content_summary(tree_path)
1937
kind, size, executable, link_or_sha1 = summary
1940
limbo_name = tt._limbo_name(trans_id)
1941
if trans_id in tt._new_reference_revision:
1942
kind = 'tree-reference'
1944
statval = os.lstat(limbo_name)
1945
size = statval.st_size
1946
if not supports_executable():
1949
executable = statval.st_mode & S_IEXEC
1953
if kind == 'symlink':
1954
link_or_sha1 = os.readlink(limbo_name).decode(osutils._fs_enc)
1955
if supports_executable():
1956
executable = tt._new_executability.get(trans_id, executable)
1957
return kind, size, executable, link_or_sha1
1959
def iter_changes(self, from_tree, include_unchanged=False,
1960
specific_files=None, pb=None, extra_trees=None,
1961
require_versioned=True, want_unversioned=False):
1962
"""See InterTree.iter_changes.
1964
This has a fast path that is only used when the from_tree matches
1965
the transform tree, and no fancy options are supplied.
1967
if (from_tree is not self._transform._tree or include_unchanged or
1968
specific_files or want_unversioned):
1969
return tree.InterTree(from_tree, self).iter_changes(
1970
include_unchanged=include_unchanged,
1971
specific_files=specific_files,
1973
extra_trees=extra_trees,
1974
require_versioned=require_versioned,
1975
want_unversioned=want_unversioned)
1976
if want_unversioned:
1977
raise ValueError('want_unversioned is not supported')
1978
return self._transform.iter_changes()
1980
def get_file(self, file_id, path=None):
1981
"""See Tree.get_file"""
1982
if not self._content_change(file_id):
1983
return self._transform._tree.get_file(file_id, path)
1984
trans_id = self._transform.trans_id_file_id(file_id)
1985
name = self._transform._limbo_name(trans_id)
1986
return open(name, 'rb')
1988
def get_file_with_stat(self, file_id, path=None):
1989
return self.get_file(file_id, path), None
1991
def annotate_iter(self, file_id,
1992
default_revision=_mod_revision.CURRENT_REVISION):
1993
changes = self._changes(file_id)
1997
changed_content, versioned, kind = (changes[2], changes[3],
2001
get_old = (kind[0] == 'file' and versioned[0])
2003
old_annotation = self._transform._tree.annotate_iter(file_id,
2004
default_revision=default_revision)
2008
return old_annotation
2009
if not changed_content:
2010
return old_annotation
2011
# TODO: This is doing something similar to what WT.annotate_iter is
2012
# doing, however it fails slightly because it doesn't know what
2013
# the *other* revision_id is, so it doesn't know how to give the
2014
# other as the origin for some lines, they all get
2015
# 'default_revision'
2016
# It would be nice to be able to use the new Annotator based
2017
# approach, as well.
2018
return annotate.reannotate([old_annotation],
2019
self.get_file(file_id).readlines(),
2022
def get_symlink_target(self, file_id):
2023
"""See Tree.get_symlink_target"""
2024
if not self._content_change(file_id):
2025
return self._transform._tree.get_symlink_target(file_id)
2026
trans_id = self._transform.trans_id_file_id(file_id)
2027
name = self._transform._limbo_name(trans_id)
2028
return osutils.readlink(name)
2030
def walkdirs(self, prefix=''):
2031
pending = [self._transform.root]
2032
while len(pending) > 0:
2033
parent_id = pending.pop()
2036
prefix = prefix.rstrip('/')
2037
parent_path = self._final_paths.get_path(parent_id)
2038
parent_file_id = self._transform.final_file_id(parent_id)
2039
for child_id in self._all_children(parent_id):
2040
path_from_root = self._final_paths.get_path(child_id)
2041
basename = self._transform.final_name(child_id)
2042
file_id = self._transform.final_file_id(child_id)
2044
kind = self._transform.final_kind(child_id)
2045
versioned_kind = kind
2048
versioned_kind = self._transform._tree.stored_kind(file_id)
2049
if versioned_kind == 'directory':
2050
subdirs.append(child_id)
2051
children.append((path_from_root, basename, kind, None,
2052
file_id, versioned_kind))
2054
if parent_path.startswith(prefix):
2055
yield (parent_path, parent_file_id), children
2056
pending.extend(sorted(subdirs, key=self._final_paths.get_path,
2059
def get_parent_ids(self):
2060
return self._parent_ids
2062
def set_parent_ids(self, parent_ids):
2063
self._parent_ids = parent_ids
2065
def get_revision_tree(self, revision_id):
2066
return self._transform._tree.get_revision_tree(revision_id)
2069
def joinpath(parent, child):
2070
"""Join tree-relative paths, handling the tree root specially"""
2071
if parent is None or parent == "":
2074
return pathjoin(parent, child)
2077
class FinalPaths(object):
2078
"""Make path calculation cheap by memoizing paths.
2080
The underlying tree must not be manipulated between calls, or else
2081
the results will likely be incorrect.
2083
def __init__(self, transform):
2084
object.__init__(self)
2085
self._known_paths = {}
2086
self.transform = transform
2088
def _determine_path(self, trans_id):
2089
if (trans_id == self.transform.root or trans_id == ROOT_PARENT):
2091
name = self.transform.final_name(trans_id)
2092
parent_id = self.transform.final_parent(trans_id)
2093
if parent_id == self.transform.root:
2096
return pathjoin(self.get_path(parent_id), name)
2098
def get_path(self, trans_id):
2099
"""Find the final path associated with a trans_id"""
2100
if trans_id not in self._known_paths:
2101
self._known_paths[trans_id] = self._determine_path(trans_id)
2102
return self._known_paths[trans_id]
2104
def get_paths(self, trans_ids):
2105
return [(self.get_path(t), t) for t in trans_ids]
2109
def topology_sorted_ids(tree):
2110
"""Determine the topological order of the ids in a tree"""
2111
file_ids = list(tree)
2112
file_ids.sort(key=tree.id2path)
2116
def build_tree(tree, wt, accelerator_tree=None, hardlink=False,
2117
delta_from_tree=False):
2118
"""Create working tree for a branch, using a TreeTransform.
2120
This function should be used on empty trees, having a tree root at most.
2121
(see merge and revert functionality for working with existing trees)
2123
Existing files are handled like so:
2125
- Existing bzrdirs take precedence over creating new items. They are
2126
created as '%s.diverted' % name.
2127
- Otherwise, if the content on disk matches the content we are building,
2128
it is silently replaced.
2129
- Otherwise, conflict resolution will move the old file to 'oldname.moved'.
2131
:param tree: The tree to convert wt into a copy of
2132
:param wt: The working tree that files will be placed into
2133
:param accelerator_tree: A tree which can be used for retrieving file
2134
contents more quickly than tree itself, i.e. a workingtree. tree
2135
will be used for cases where accelerator_tree's content is different.
2136
:param hardlink: If true, hard-link files to accelerator_tree, where
2137
possible. accelerator_tree must implement abspath, i.e. be a
2139
:param delta_from_tree: If true, build_tree may use the input Tree to
2140
generate the inventory delta.
2142
wt.lock_tree_write()
2146
if accelerator_tree is not None:
2147
accelerator_tree.lock_read()
2149
return _build_tree(tree, wt, accelerator_tree, hardlink,
2152
if accelerator_tree is not None:
2153
accelerator_tree.unlock()
2160
def _build_tree(tree, wt, accelerator_tree, hardlink, delta_from_tree):
2161
"""See build_tree."""
2162
for num, _unused in enumerate(wt.all_file_ids()):
2163
if num > 0: # more than just a root
2164
raise errors.WorkingTreeAlreadyPopulated(base=wt.basedir)
2165
existing_files = set()
2166
for dir, files in wt.walkdirs():
2167
existing_files.update(f[0] for f in files)
2169
top_pb = bzrlib.ui.ui_factory.nested_progress_bar()
2170
pp = ProgressPhase("Build phase", 2, top_pb)
2171
if tree.inventory.root is not None:
2172
# This is kind of a hack: we should be altering the root
2173
# as part of the regular tree shape diff logic.
2174
# The conditional test here is to avoid doing an
2175
# expensive operation (flush) every time the root id
2176
# is set within the tree, nor setting the root and thus
2177
# marking the tree as dirty, because we use two different
2178
# idioms here: tree interfaces and inventory interfaces.
2179
if wt.get_root_id() != tree.get_root_id():
2180
wt.set_root_id(tree.get_root_id())
2182
tt = TreeTransform(wt)
2186
file_trans_id[wt.get_root_id()] = \
2187
tt.trans_id_tree_file_id(wt.get_root_id())
2188
pb = bzrlib.ui.ui_factory.nested_progress_bar()
2190
deferred_contents = []
2192
total = len(tree.inventory)
2194
precomputed_delta = []
2196
precomputed_delta = None
2197
for num, (tree_path, entry) in \
2198
enumerate(tree.inventory.iter_entries_by_dir()):
2199
pb.update("Building tree", num - len(deferred_contents), total)
2200
if entry.parent_id is None:
2203
file_id = entry.file_id
2205
precomputed_delta.append((None, tree_path, file_id, entry))
2206
if tree_path in existing_files:
2207
target_path = wt.abspath(tree_path)
2208
kind = file_kind(target_path)
2209
if kind == "directory":
2211
bzrdir.BzrDir.open(target_path)
2212
except errors.NotBranchError:
2216
if (file_id not in divert and
2217
_content_match(tree, entry, file_id, kind,
2219
tt.delete_contents(tt.trans_id_tree_path(tree_path))
2220
if kind == 'directory':
2222
parent_id = file_trans_id[entry.parent_id]
2223
if entry.kind == 'file':
2224
# We *almost* replicate new_by_entry, so that we can defer
2225
# getting the file text, and get them all at once.
2226
trans_id = tt.create_path(entry.name, parent_id)
2227
file_trans_id[file_id] = trans_id
2228
tt.version_file(file_id, trans_id)
2229
executable = tree.is_executable(file_id, tree_path)
2231
tt.set_executability(executable, trans_id)
2232
trans_data = (trans_id, tree_path)
2233
deferred_contents.append((file_id, trans_data))
2235
file_trans_id[file_id] = new_by_entry(tt, entry, parent_id,
2238
new_trans_id = file_trans_id[file_id]
2239
old_parent = tt.trans_id_tree_path(tree_path)
2240
_reparent_children(tt, old_parent, new_trans_id)
2241
offset = num + 1 - len(deferred_contents)
2242
_create_files(tt, tree, deferred_contents, pb, offset,
2243
accelerator_tree, hardlink)
2247
divert_trans = set(file_trans_id[f] for f in divert)
2248
resolver = lambda t, c: resolve_checkout(t, c, divert_trans)
2249
raw_conflicts = resolve_conflicts(tt, pass_func=resolver)
2250
if len(raw_conflicts) > 0:
2251
precomputed_delta = None
2252
conflicts = cook_conflicts(raw_conflicts, tt)
2253
for conflict in conflicts:
2256
wt.add_conflicts(conflicts)
2257
except errors.UnsupportedOperation:
2259
result = tt.apply(no_conflicts=True,
2260
precomputed_delta=precomputed_delta)
2267
def _create_files(tt, tree, desired_files, pb, offset, accelerator_tree,
2269
total = len(desired_files) + offset
2271
if accelerator_tree is None:
2272
new_desired_files = desired_files
2274
iter = accelerator_tree.iter_changes(tree, include_unchanged=True)
2275
unchanged = dict((f, p[1]) for (f, p, c, v, d, n, k, e)
2276
in iter if not (c or e[0] != e[1]))
2277
new_desired_files = []
2279
for file_id, (trans_id, tree_path) in desired_files:
2280
accelerator_path = unchanged.get(file_id)
2281
if accelerator_path is None:
2282
new_desired_files.append((file_id, (trans_id, tree_path)))
2284
pb.update('Adding file contents', count + offset, total)
2286
tt.create_hardlink(accelerator_tree.abspath(accelerator_path),
2289
contents = accelerator_tree.get_file(file_id, accelerator_path)
2290
if wt.supports_content_filtering():
2291
filters = wt._content_filter_stack(tree_path)
2292
contents = filtered_output_bytes(contents, filters,
2293
ContentFilterContext(tree_path, tree))
2295
tt.create_file(contents, trans_id)
2299
except AttributeError:
2300
# after filtering, contents may no longer be file-like
2304
for count, ((trans_id, tree_path), contents) in enumerate(
2305
tree.iter_files_bytes(new_desired_files)):
2306
if wt.supports_content_filtering():
2307
filters = wt._content_filter_stack(tree_path)
2308
contents = filtered_output_bytes(contents, filters,
2309
ContentFilterContext(tree_path, tree))
2310
tt.create_file(contents, trans_id)
2311
pb.update('Adding file contents', count + offset, total)
2314
def _reparent_children(tt, old_parent, new_parent):
2315
for child in tt.iter_tree_children(old_parent):
2316
tt.adjust_path(tt.final_name(child), new_parent, child)
2318
def _reparent_transform_children(tt, old_parent, new_parent):
2319
by_parent = tt.by_parent()
2320
for child in by_parent[old_parent]:
2321
tt.adjust_path(tt.final_name(child), new_parent, child)
2322
return by_parent[old_parent]
2324
def _content_match(tree, entry, file_id, kind, target_path):
2325
if entry.kind != kind:
2327
if entry.kind == "directory":
2329
if entry.kind == "file":
2330
if tree.get_file(file_id).read() == file(target_path, 'rb').read():
2332
elif entry.kind == "symlink":
2333
if tree.get_symlink_target(file_id) == os.readlink(target_path):
2338
def resolve_checkout(tt, conflicts, divert):
2339
new_conflicts = set()
2340
for c_type, conflict in ((c[0], c) for c in conflicts):
2341
# Anything but a 'duplicate' would indicate programmer error
2342
if c_type != 'duplicate':
2343
raise AssertionError(c_type)
2344
# Now figure out which is new and which is old
2345
if tt.new_contents(conflict[1]):
2346
new_file = conflict[1]
2347
old_file = conflict[2]
2349
new_file = conflict[2]
2350
old_file = conflict[1]
2352
# We should only get here if the conflict wasn't completely
2354
final_parent = tt.final_parent(old_file)
2355
if new_file in divert:
2356
new_name = tt.final_name(old_file)+'.diverted'
2357
tt.adjust_path(new_name, final_parent, new_file)
2358
new_conflicts.add((c_type, 'Diverted to',
2359
new_file, old_file))
2361
new_name = tt.final_name(old_file)+'.moved'
2362
tt.adjust_path(new_name, final_parent, old_file)
2363
new_conflicts.add((c_type, 'Moved existing file to',
2364
old_file, new_file))
2365
return new_conflicts
2368
def new_by_entry(tt, entry, parent_id, tree):
2369
"""Create a new file according to its inventory entry"""
2373
contents = tree.get_file(entry.file_id).readlines()
2374
executable = tree.is_executable(entry.file_id)
2375
return tt.new_file(name, parent_id, contents, entry.file_id,
2377
elif kind in ('directory', 'tree-reference'):
2378
trans_id = tt.new_directory(name, parent_id, entry.file_id)
2379
if kind == 'tree-reference':
2380
tt.set_tree_reference(entry.reference_revision, trans_id)
2382
elif kind == 'symlink':
2383
target = tree.get_symlink_target(entry.file_id)
2384
return tt.new_symlink(name, parent_id, target, entry.file_id)
2386
raise errors.BadFileKindError(name, kind)
2389
@deprecated_function(deprecated_in((1, 9, 0)))
2390
def create_by_entry(tt, entry, tree, trans_id, lines=None, mode_id=None):
2391
"""Create new file contents according to an inventory entry.
2393
DEPRECATED. Use create_from_tree instead.
2395
if entry.kind == "file":
2397
lines = tree.get_file(entry.file_id).readlines()
2398
tt.create_file(lines, trans_id, mode_id=mode_id)
2399
elif entry.kind == "symlink":
2400
tt.create_symlink(tree.get_symlink_target(entry.file_id), trans_id)
2401
elif entry.kind == "directory":
2402
tt.create_directory(trans_id)
2405
def create_from_tree(tt, trans_id, tree, file_id, bytes=None):
2406
"""Create new file contents according to tree contents."""
2407
kind = tree.kind(file_id)
2408
if kind == 'directory':
2409
tt.create_directory(trans_id)
2410
elif kind == "file":
2412
tree_file = tree.get_file(file_id)
2414
bytes = tree_file.readlines()
2417
tt.create_file(bytes, trans_id)
2418
elif kind == "symlink":
2419
tt.create_symlink(tree.get_symlink_target(file_id), trans_id)
2421
raise AssertionError('Unknown kind %r' % kind)
2424
def create_entry_executability(tt, entry, trans_id):
2425
"""Set the executability of a trans_id according to an inventory entry"""
2426
if entry.kind == "file":
2427
tt.set_executability(entry.executable, trans_id)
2430
def get_backup_name(entry, by_parent, parent_trans_id, tt):
2431
return _get_backup_name(entry.name, by_parent, parent_trans_id, tt)
2434
def _get_backup_name(name, by_parent, parent_trans_id, tt):
2435
"""Produce a backup-style name that appears to be available"""
2439
yield "%s.~%d~" % (name, counter)
2441
for new_name in name_gen():
2442
if not tt.has_named_child(by_parent, parent_trans_id, new_name):
2446
def _entry_changes(file_id, entry, working_tree):
2447
"""Determine in which ways the inventory entry has changed.
2449
Returns booleans: has_contents, content_mod, meta_mod
2450
has_contents means there are currently contents, but they differ
2451
contents_mod means contents need to be modified
2452
meta_mod means the metadata needs to be modified
2454
cur_entry = working_tree.inventory[file_id]
2456
working_kind = working_tree.kind(file_id)
2459
has_contents = False
2462
if has_contents is True:
2463
if entry.kind != working_kind:
2464
contents_mod, meta_mod = True, False
2466
cur_entry._read_tree_state(working_tree.id2path(file_id),
2468
contents_mod, meta_mod = entry.detect_changes(cur_entry)
2469
cur_entry._forget_tree_state()
2470
return has_contents, contents_mod, meta_mod
2473
def revert(working_tree, target_tree, filenames, backups=False,
2474
pb=DummyProgress(), change_reporter=None):
2475
"""Revert a working tree's contents to those of a target tree."""
2476
target_tree.lock_read()
2477
tt = TreeTransform(working_tree, pb)
2479
pp = ProgressPhase("Revert phase", 3, pb)
2480
conflicts, merge_modified = _prepare_revert_transform(
2481
working_tree, target_tree, tt, filenames, backups, pp)
2483
change_reporter = delta._ChangeReporter(
2484
unversioned_filter=working_tree.is_ignored)
2485
delta.report_changes(tt.iter_changes(), change_reporter)
2486
for conflict in conflicts:
2490
working_tree.set_merge_modified(merge_modified)
2492
target_tree.unlock()
2498
def _prepare_revert_transform(working_tree, target_tree, tt, filenames,
2499
backups, pp, basis_tree=None,
2500
merge_modified=None):
2502
child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
2504
if merge_modified is None:
2505
merge_modified = working_tree.merge_modified()
2506
merge_modified = _alter_files(working_tree, target_tree, tt,
2507
child_pb, filenames, backups,
2508
merge_modified, basis_tree)
2512
child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
2514
raw_conflicts = resolve_conflicts(tt, child_pb,
2515
lambda t, c: conflict_pass(t, c, target_tree))
2518
conflicts = cook_conflicts(raw_conflicts, tt)
2519
return conflicts, merge_modified
2522
def _alter_files(working_tree, target_tree, tt, pb, specific_files,
2523
backups, merge_modified, basis_tree=None):
2524
if basis_tree is not None:
2525
basis_tree.lock_read()
2526
change_list = target_tree.iter_changes(working_tree,
2527
specific_files=specific_files, pb=pb)
2528
if target_tree.get_root_id() is None:
2534
for id_num, (file_id, path, changed_content, versioned, parent, name,
2535
kind, executable) in enumerate(change_list):
2536
if skip_root and file_id[0] is not None and parent[0] is None:
2538
trans_id = tt.trans_id_file_id(file_id)
2541
keep_content = False
2542
if kind[0] == 'file' and (backups or kind[1] is None):
2543
wt_sha1 = working_tree.get_file_sha1(file_id)
2544
if merge_modified.get(file_id) != wt_sha1:
2545
# acquire the basis tree lazily to prevent the
2546
# expense of accessing it when it's not needed ?
2547
# (Guessing, RBC, 200702)
2548
if basis_tree is None:
2549
basis_tree = working_tree.basis_tree()
2550
basis_tree.lock_read()
2551
if file_id in basis_tree:
2552
if wt_sha1 != basis_tree.get_file_sha1(file_id):
2554
elif kind[1] is None and not versioned[1]:
2556
if kind[0] is not None:
2557
if not keep_content:
2558
tt.delete_contents(trans_id)
2559
elif kind[1] is not None:
2560
parent_trans_id = tt.trans_id_file_id(parent[0])
2561
by_parent = tt.by_parent()
2562
backup_name = _get_backup_name(name[0], by_parent,
2563
parent_trans_id, tt)
2564
tt.adjust_path(backup_name, parent_trans_id, trans_id)
2565
new_trans_id = tt.create_path(name[0], parent_trans_id)
2566
if versioned == (True, True):
2567
tt.unversion_file(trans_id)
2568
tt.version_file(file_id, new_trans_id)
2569
# New contents should have the same unix perms as old
2572
trans_id = new_trans_id
2573
if kind[1] in ('directory', 'tree-reference'):
2574
tt.create_directory(trans_id)
2575
if kind[1] == 'tree-reference':
2576
revision = target_tree.get_reference_revision(file_id,
2578
tt.set_tree_reference(revision, trans_id)
2579
elif kind[1] == 'symlink':
2580
tt.create_symlink(target_tree.get_symlink_target(file_id),
2582
elif kind[1] == 'file':
2583
deferred_files.append((file_id, (trans_id, mode_id)))
2584
if basis_tree is None:
2585
basis_tree = working_tree.basis_tree()
2586
basis_tree.lock_read()
2587
new_sha1 = target_tree.get_file_sha1(file_id)
2588
if (file_id in basis_tree and new_sha1 ==
2589
basis_tree.get_file_sha1(file_id)):
2590
if file_id in merge_modified:
2591
del merge_modified[file_id]
2593
merge_modified[file_id] = new_sha1
2595
# preserve the execute bit when backing up
2596
if keep_content and executable[0] == executable[1]:
2597
tt.set_executability(executable[1], trans_id)
2598
elif kind[1] is not None:
2599
raise AssertionError(kind[1])
2600
if versioned == (False, True):
2601
tt.version_file(file_id, trans_id)
2602
if versioned == (True, False):
2603
tt.unversion_file(trans_id)
2604
if (name[1] is not None and
2605
(name[0] != name[1] or parent[0] != parent[1])):
2606
if name[1] == '' and parent[1] is None:
2607
parent_trans = ROOT_PARENT
2609
parent_trans = tt.trans_id_file_id(parent[1])
2610
tt.adjust_path(name[1], parent_trans, trans_id)
2611
if executable[0] != executable[1] and kind[1] == "file":
2612
tt.set_executability(executable[1], trans_id)
2613
for (trans_id, mode_id), bytes in target_tree.iter_files_bytes(
2615
tt.create_file(bytes, trans_id, mode_id)
2617
if basis_tree is not None:
2619
return merge_modified
2622
def resolve_conflicts(tt, pb=DummyProgress(), pass_func=None):
2623
"""Make many conflict-resolution attempts, but die if they fail"""
2624
if pass_func is None:
2625
pass_func = conflict_pass
2626
new_conflicts = set()
2629
pb.update('Resolution pass', n+1, 10)
2630
conflicts = tt.find_conflicts()
2631
if len(conflicts) == 0:
2632
return new_conflicts
2633
new_conflicts.update(pass_func(tt, conflicts))
2634
raise MalformedTransform(conflicts=conflicts)
2639
def conflict_pass(tt, conflicts, path_tree=None):
2640
"""Resolve some classes of conflicts.
2642
:param tt: The transform to resolve conflicts in
2643
:param conflicts: The conflicts to resolve
2644
:param path_tree: A Tree to get supplemental paths from
2646
new_conflicts = set()
2647
for c_type, conflict in ((c[0], c) for c in conflicts):
2648
if c_type == 'duplicate id':
2649
tt.unversion_file(conflict[1])
2650
new_conflicts.add((c_type, 'Unversioned existing file',
2651
conflict[1], conflict[2], ))
2652
elif c_type == 'duplicate':
2653
# files that were renamed take precedence
2654
final_parent = tt.final_parent(conflict[1])
2655
if tt.path_changed(conflict[1]):
2656
existing_file, new_file = conflict[2], conflict[1]
2658
existing_file, new_file = conflict[1], conflict[2]
2659
new_name = tt.final_name(existing_file)+'.moved'
2660
tt.adjust_path(new_name, final_parent, existing_file)
2661
new_conflicts.add((c_type, 'Moved existing file to',
2662
existing_file, new_file))
2663
elif c_type == 'parent loop':
2664
# break the loop by undoing one of the ops that caused the loop
2666
while not tt.path_changed(cur):
2667
cur = tt.final_parent(cur)
2668
new_conflicts.add((c_type, 'Cancelled move', cur,
2669
tt.final_parent(cur),))
2670
tt.adjust_path(tt.final_name(cur), tt.get_tree_parent(cur), cur)
2672
elif c_type == 'missing parent':
2673
trans_id = conflict[1]
2675
tt.cancel_deletion(trans_id)
2676
new_conflicts.add(('deleting parent', 'Not deleting',
2681
tt.final_name(trans_id)
2683
if path_tree is not None:
2684
file_id = tt.final_file_id(trans_id)
2686
file_id = tt.inactive_file_id(trans_id)
2687
entry = path_tree.inventory[file_id]
2688
# special-case the other tree root (move its
2689
# children to current root)
2690
if entry.parent_id is None:
2692
moved = _reparent_transform_children(
2693
tt, trans_id, tt.root)
2695
new_conflicts.add((c_type, 'Moved to root',
2698
parent_trans_id = tt.trans_id_file_id(
2700
tt.adjust_path(entry.name, parent_trans_id,
2703
tt.create_directory(trans_id)
2704
new_conflicts.add((c_type, 'Created directory', trans_id))
2705
elif c_type == 'unversioned parent':
2706
file_id = tt.inactive_file_id(conflict[1])
2707
# special-case the other tree root (move its children instead)
2708
if path_tree and file_id in path_tree:
2709
if path_tree.inventory[file_id].parent_id is None:
2711
tt.version_file(file_id, conflict[1])
2712
new_conflicts.add((c_type, 'Versioned directory', conflict[1]))
2713
elif c_type == 'non-directory parent':
2714
parent_id = conflict[1]
2715
parent_parent = tt.final_parent(parent_id)
2716
parent_name = tt.final_name(parent_id)
2717
parent_file_id = tt.final_file_id(parent_id)
2718
new_parent_id = tt.new_directory(parent_name + '.new',
2719
parent_parent, parent_file_id)
2720
_reparent_transform_children(tt, parent_id, new_parent_id)
2721
if parent_file_id is not None:
2722
tt.unversion_file(parent_id)
2723
new_conflicts.add((c_type, 'Created directory', new_parent_id))
2724
elif c_type == 'versioning no contents':
2725
tt.cancel_versioning(conflict[1])
2726
return new_conflicts
2729
def cook_conflicts(raw_conflicts, tt):
2730
"""Generate a list of cooked conflicts, sorted by file path"""
2731
from bzrlib.conflicts import Conflict
2732
conflict_iter = iter_cook_conflicts(raw_conflicts, tt)
2733
return sorted(conflict_iter, key=Conflict.sort_key)
2736
def iter_cook_conflicts(raw_conflicts, tt):
2737
from bzrlib.conflicts import Conflict
2739
for conflict in raw_conflicts:
2740
c_type = conflict[0]
2741
action = conflict[1]
2742
modified_path = fp.get_path(conflict[2])
2743
modified_id = tt.final_file_id(conflict[2])
2744
if len(conflict) == 3:
2745
yield Conflict.factory(c_type, action=action, path=modified_path,
2746
file_id=modified_id)
2749
conflicting_path = fp.get_path(conflict[3])
2750
conflicting_id = tt.final_file_id(conflict[3])
2751
yield Conflict.factory(c_type, action=action, path=modified_path,
2752
file_id=modified_id,
2753
conflict_path=conflicting_path,
2754
conflict_file_id=conflicting_id)
2757
class _FileMover(object):
2758
"""Moves and deletes files for TreeTransform, tracking operations"""
2761
self.past_renames = []
2762
self.pending_deletions = []
2764
def rename(self, from_, to):
2765
"""Rename a file from one path to another. Functions like os.rename"""
2767
os.rename(from_, to)
2769
if e.errno in (errno.EEXIST, errno.ENOTEMPTY):
2770
raise errors.FileExists(to, str(e))
2772
self.past_renames.append((from_, to))
2774
def pre_delete(self, from_, to):
2775
"""Rename a file out of the way and mark it for deletion.
2777
Unlike os.unlink, this works equally well for files and directories.
2778
:param from_: The current file path
2779
:param to: A temporary path for the file
2781
self.rename(from_, to)
2782
self.pending_deletions.append(to)
2785
"""Reverse all renames that have been performed"""
2786
for from_, to in reversed(self.past_renames):
2787
os.rename(to, from_)
2788
# after rollback, don't reuse _FileMover
2790
pending_deletions = None
2792
def apply_deletions(self):
2793
"""Apply all marked deletions"""
2794
for path in self.pending_deletions:
2796
# after apply_deletions, don't reuse _FileMover
2798
pending_deletions = None
added
removed
bzrlib/transform.py
