(* $Id$
 * ----------------------------------------------------------------------
 *)

open Markup_types;;

class type resolver =
  object
    method open_in : ext_id -> Lexing.lexbuf
    method close_in : unit
    method change_encoding : string -> unit
    method clone : resolver
  end
;;

(* General note: close_in is simulated by close_all. Of course, this is
 * wrong, but it should not matter 
 *)


class resolve_read_channel ch the_warner =
  object (self)
    val pxp_resolver = 
	    new Pxp_reader.resolve_read_this_channel 
	      ~auto_close:false
	      ch
    val warner = the_warner

    initializer
      pxp_resolver # init_warner 
	(warner : Markup_types.collect_warnings :> Pxp_types.collect_warnings);
      pxp_resolver # init_rep_encoding `Enc_iso88591;

    method open_in xid =
      pxp_resolver # open_in xid

    method close_in =
      pxp_resolver # close_all   (* sic! *)

    method change_encoding enc =
      pxp_resolver # change_encoding enc

    method clone =
      ( {< pxp_resolver = pxp_resolver # clone >} : #resolver :> resolver )

  end
;;


class resolve_read_string str =
  object (self)
    val pxp_resolver = 
	    new Pxp_reader.resolve_read_this_string str
    val warner = new Pxp_types.drop_warnings

    initializer
      pxp_resolver # init_warner warner;
      pxp_resolver # init_rep_encoding `Enc_iso88591;

    method open_in xid =
      pxp_resolver # open_in xid

    method close_in =
      pxp_resolver # close_all   (* sic! *)

    method change_encoding enc =
      pxp_resolver # change_encoding enc

    method clone =
      ( {< pxp_resolver = pxp_resolver # clone >} : #resolver :> resolver )
  end
;;


class resolve_as_file the_warner =
  object (self)
    val pxp_resolver = 
	    new Pxp_reader.resolve_as_file
	      ~system_encoding:`Enc_iso88591
	      ()
    val warner = the_warner

    initializer
      pxp_resolver # init_warner
	(warner : Markup_types.collect_warnings :> Pxp_types.collect_warnings);
      pxp_resolver # init_rep_encoding `Enc_iso88591;

    method open_in xid =
      pxp_resolver # open_in xid

    method close_in =
      pxp_resolver # close_all   (* sic! *)

    method change_encoding enc =
      pxp_resolver # change_encoding enc

    method clone =
      ( {< pxp_resolver = pxp_resolver # clone >} : #resolver :> resolver )
  end
;;


(* ======================================================================
 * History:
 * 
 * $Log$
 * Revision 1.1  2000/11/17 09:57:30  lpadovan
 * Initial revision
 *
 * Revision 1.3  2000/07/14 21:35:35  gerd
 * 	Updated because of the simplification of Pxp_types.collect_warnings.
 *
 * Revision 1.2  2000/07/08 17:40:50  gerd
 * 	Updated the simulation.
 *
 * Revision 1.1  2000/05/29 23:43:51  gerd
 * 	Initial compatibility revision.
 *
 *)