module Base64 :
  sig
    val encode :
      ?pos:int ->
      ?len:int -> ?linelength:int -> ?crlf:bool -> string -> string
    val url_encode :
      ?pos:int ->
      ?len:int -> ?linelength:int -> ?crlf:bool -> string -> string
    val decode :
      ?pos:int ->
      ?len:int ->
      ?url_variant:bool -> ?accept_spaces:bool -> string -> string
    class encoding_pipe :
      ?linelength:int -> ?crlf:bool -> unit -> Netchannels.pipe
    class decoding_pipe :
      ?url_variant:bool -> ?accept_spaces:bool -> unit -> Netchannels.pipe
  end
module QuotedPrintable :
  sig
    val encode : ?crlf:bool -> ?pos:int -> ?len:int -> string -> string
    val decode : ?pos:int -> ?len:int -> string -> string
    class encoding_pipe : ?crlf:bool -> unit -> Netchannels.pipe
    class decoding_pipe : unit -> Netchannels.pipe
  end
module Q :
  sig
    val encode : ?pos:int -> ?len:int -> string -> string
    val decode : ?pos:int -> ?len:int -> string -> string
  end
module Url :
  sig
    val decode : ?plus:bool -> string -> string
    val encode : ?plus:bool -> string -> string
    val mk_url_encoded_parameters : (string * string) list -> string
    val dest_url_encoded_parameters : string -> (string * string) list
  end
module Html :
  sig
    val encode_from_latin1 : string -> string
    val decode_to_latin1 : string -> string
    val unsafe_chars_html4 : string
    val encode :
      in_enc:Netconversion.encoding ->
      ?out_enc:Netconversion.encoding ->
      ?prefer_name:bool -> ?unsafe_chars:string -> unit -> string -> string
    type entity_set = [ `Empty | `Html | `Xml ]
    val decode :
      in_enc:Netconversion.encoding ->
      out_enc:Netconversion.encoding ->
      ?lookup:(string -> string) ->
      ?subst:(int -> string) ->
      ?entity_base:entity_set -> unit -> string -> string
  end