(* Copyright (C) 2000, HELM Team.
 * 
 * This file is part of HELM, an Hypertextual, Electronic
 * Library of Mathematics, developed at the Computer Science
 * Department, University of Bologna, Italy.
 * 
 * HELM is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * 
 * HELM is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with HELM; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
 * MA  02111-1307, USA.
 * 
 * For details, see the HELM World-Wide-Web page,
 * http://cs.unibo.it/helm/.
 *)

(******************************************************************************)
(*                                                                            *)
(*                               PROJECT HELM                                 *)
(*                                                                            *)
(*                Claudio Sacerdoti Coen <sacerdot@cs.unibo.it>               *)
(*                                 24/01/2000                                 *)
(*                                                                            *)
(*                                                                            *)
(******************************************************************************)

(* THE URL OF THE HTTP GETTER *)
val getter_url : string ref

(* SIMPLE BINDINGS TO THE HTTP GETTER *)
(* synchronize with the servers *)
val update : unit -> unit

type format =
   Normal
 | GZipped
;;

(* get the xml file                              *)
(* defaults: format = Normal and patchdtd = true *)
val getxml : ?format:format -> ?patchdtd:bool -> UriManager.uri -> string

(* adds an (URI -> URL) entry in the map from URIs to URLs *)
val register : UriManager.uri -> string -> unit

exception Unresolved
exception UnexpectedGetterOutput

(* resolves an URI to its corresponding URL.                  *)
(* Unresolved is raised if there is no URL for the given URI. *)
(* UnexceptedGetterOutput is raised if the output of the real *)
(*  getter has not the expected format.                       *)
val resolve: UriManager.uri -> string