--- /dev/null
+(* Copyright (C) 2004, 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://helm.cs.unibo.it/
+ *)
+
+(* $Id$ *)
+
+exception Macro_not_found of string
+exception Utf8_not_found of string
+
+let expand macro =
+ try
+ Hashtbl.find Utf8MacroTable.macro2utf8 macro
+ with Not_found -> raise (Macro_not_found macro)
+
+let unicode_of_tex s =
+ try
+ if s.[0] = '\\' then
+ expand (String.sub s 1 (String.length s - 1))
+ else s
+ with Macro_not_found _ -> s
+
+let tex_of_unicode s =
+ try
+ "\\" ^ Hashtbl.find Utf8MacroTable.utf82macro s
+ with Not_found -> s
+