(* Copyright (C) 2000-2002, 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>               *)
(*                                 06/01/2002                                 *)
(*                                                                            *)
(*                                                                            *)
(******************************************************************************)

let domImpl = Gdome.domImplementation ()
let helm_ns = Gdome.domString "http://www.cs.unibo.it/helm"
let xlink_ns = Gdome.domString "http://www.w3.org/1999/xlink"
let mathml_ns = Gdome.domString "http://www.w3.org/1998/Math/MathML"
let boxml_ns = Gdome.domString "http://helm.cs.unibo.it/2003/BoxML"

  (* TODO BRRRRR .... *)
  (** strip first 4 line of a string, used to strip xml declaration and doctype
  declaration from XML strings generated by Xml.pp_to_string *)
let strip_xml_headings =
  let xml_headings_RE = Pcre.regexp "^.*\n.*\n.*\n.*\n" in
  fun s ->
    Pcre.replace ~rex:xml_headings_RE s