module type MIME_TYPE =
sig
  type t

  exception ParseError of string

  val from_string : string -> t

  val to_type : t -> string

  val to_subtype : t -> string

  val to_parameter : t -> (string * string) option
end

module MimeType : MIME_TYPE =
struct

  type t =
    { mime_type : string;
      mime_subtype : string;
      mime_param : (string * string) option;
    }

  exception ParseError of string

  let from_string _ = { mime_type = "text";
                        mime_subtype = "plain";
                        mime_param = None }

  let to_type m = m.mime_type

  let to_subtype m = m.mime_subtype

  let to_parameter m = m.mime_param

end