def _phase4_create_destination_directories(self):
self.created_dirs = set()
for path in self.destination_dirs:
if path.is_root():
continue
if path.is_root() or path.parent_path() in self.created_dirs:
pass
elif self._is_path_removed(path.parent_path()) or not os.path.exists(path.parent_path().real_path()):
raise CannotCreateDestinationDirInaccessibleParentError(path.path_text())
elif not os.path.isdir(path.parent_path().real_path()):
raise CannotCreateDestinationDirUnexpectedNonDirParentError(path.path_text())
elif not check_file_rights(path.parent_path().real_path(), read=True, execute=True):
raise CannotCreateDestinationDirNoReadPermissionForParentError(path.path_text())
if self._is_path_removed(path) or not os.path.exists(path.real_path()):
if not check_file_rights(path.parent_path().real_path(), write=True):
raise CannotCreateDestinationDirNoWritePermissionForParentError(path.path_text())
self.steps.append(CreateDirectoryAction(path.real_path()))
self.created_dirs.add(path)
self.removed_entries_by_path[path.parent_path()].discard(path.basename())
continue
if path in self.created_dirs or os.path.isdir(path.real_path()):
continue # already created
raise CannotCreateDestinationDirFileInTheWayWillNotMoveError(path.path_text())
def _check_base_path(self):
if not os.path.exists(self.base_path):
raise BasePathNotFoundError(self.base_path)
if not os.path.isdir(self.base_path):
raise BasePathNotADirError(self.base_path)
if not check_file_rights(self.base_path, read=True, write=True, execute=True):
raise NoPermissionsForBasePathError(self.base_path)
def _phase2_move_files_to_staging(self):
self.removed_entries_by_path = defaultdict(set)
for renamed_fref in self.renamed_files:
from_path = renamed_fref.old_file_ref.path
to_path = self._path_to_staging_dir(renamed_fref.path)
if not check_file_rights(from_path.parent_path().real_path(), read=True, write=True, execute=True):
raise CannotMoveFileNoWritePermissionForDirError(
from_path.path_text(), to_path.path_text(), from_path.parent_path().path_text()
)
self.steps.append(MoveFileAction(from_path.real_path(), to_path.real_path()))
self.removed_entries_by_path[from_path.parent_path()].add(from_path.basename())
def _phase5_move_files_to_final_destination(self):
for renamed_fref in self.renamed_files:
from_path = self._path_to_staging_dir(renamed_fref.path)
to_path = renamed_fref.path
if (
(not to_path.is_root())
and (to_path.parent_path() not in self.created_dirs)
and (not check_file_rights(to_path.parent_path().real_path(), write=True))
):
raise CannotMoveFileNoWritePermissionForDirError(
from_path.path_text(), to_path.path_text(), from_path.parent_path().path_text()
)
self.steps.append(MoveFileAction(from_path.real_path(), to_path.real_path()))
def _phase3_delete_emptied_directories(self):
source_parent_paths = sets_union(
f.old_file_ref.path.subpaths(exclude_root=True, exclude_self=True) for f in self.renamed_files
)
undeletable_dirs = set()
for path in reversed(sorted(source_parent_paths)):
if path in undeletable_dirs:
continue
files_in_dir = set(self._list_dir(path.real_path()))
if path in self.removed_entries_by_path:
files_in_dir -= self.removed_entries_by_path[path]
if len(files_in_dir) == 0 and check_file_rights(
path.parent_path().real_path(), read=True, write=True, execute=True
):
self.steps.append(DeleteEmptyDirectoryAction(path.real_path()))
self.removed_entries_by_path[path.parent_path()].add(path.basename())
else:
undeletable_dirs |= set(path.subpaths(exclude_root=True, exclude_self=True))
