URI URI class A class for absolute URIs and relative URI computation utility functions. Only absolute URIs are provided, with no current access to internals of URIs such as URI scheme, path, authority. Relative URIs can be generated against some base or turned to and from local filenames. @world: @uri_string: @Returns: @old_uri: @Returns: @old_uri: @local_name: @Returns: @uri: @uri: @Returns: @uri: @len_p: @Returns: @uri: @fh: @uri: @Returns: @uri: @len_p: @Returns: @first_uri: @second_uri: @Returns: @uri: @Returns: @uri: @Returns: @uri_string: @source_uri: @base_uri: @Returns: @base_uri: @uri_string: @Returns: @world: @filename: @Returns: @uri1: @uri2: @Returns: @user_data: @uri: @Returns: