def modify(self, old_contents, servermap, first_time):
children = self.node._unpack_contents(old_contents)
name = self.name
if name not in children:
raise NoSuchChildError(name)
now = time.time()
child = children[name][0]
metadata = update_metadata(children[name][1].copy(), self.metadata, now)
if self.create_readonly_node and metadata.get('no-write', False):
child = self.create_readonly_node(child, name)
children[name] = (child, metadata)
new_contents = self.node._pack_contents(children)
return new_contents
def modify(self, old_contents, servermap, first_time):
children = self.node._unpack_contents(old_contents)
if self.name not in children:
if first_time and self.must_exist:
raise NoSuchChildError(self.name)
self.old_child = None
return None
self.old_child, metadata = children[self.name]
# Unknown children can be removed regardless of must_be_directory or must_be_file.
if self.must_be_directory and IFileNode.providedBy(self.old_child):
raise ChildOfWrongTypeError("delete required a directory, not a file")
if self.must_be_file and IDirectoryNode.providedBy(self.old_child):
raise ChildOfWrongTypeError("delete required a file, not a directory")
del children[self.name]
new_contents = self.node._pack_contents(children)
return new_contents
def _get_with_metadata(self, children, name):
child = children.get(name)
if child is None:
raise NoSuchChildError(name)
return child
def _get(self, children, name):
child = children.get(name)
if child is None:
raise NoSuchChildError(name)
return child[0]
