1 (* Copyright (C) 2004-2005, HELM Team.
3 * This file is part of HELM, an Hypertextual, Electronic
4 * Library of Mathematics, developed at the Computer Science
5 * Department, University of Bologna, Italy.
7 * HELM is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
12 * HELM is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with HELM; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
22 * For details, see the HELM World-Wide-Web page,
23 * http://helm.cs.unibo.it/
26 exception UnableToInclude of string
28 let baseuri_of_baseuri_decl st =
30 | GrafiteAst.Executable (_, GrafiteAst.Command (_, GrafiteAst.Set (_, "baseuri", buri))) ->
34 let make_absolute paths path =
35 let rec aux = function
36 | [] -> ignore (Unix.stat path); path
38 let path = p ^ "/" ^ path in
40 ignore (Unix.stat path); path
41 with Unix.Unix_error _ -> aux tl
45 with Unix.Unix_error _ -> raise (UnableToInclude path)
48 let baseuri_of_script ~include_paths file =
49 let file = make_absolute include_paths file in
51 let ic = open_in file in
52 let istream = Ulexing.from_utf8_channel ic in
56 let stm = GrafiteParser.parse_statement istream in
57 match baseuri_of_baseuri_decl stm with
59 let u = Http_getter_misc.strip_trailing_slash buri in
60 if String.length u < 5 || String.sub u 0 5 <> "cic:/" then
61 HLog.error (file ^ " sets an incorrect baseuri: " ^ buri);
63 ignore(Http_getter.resolve u)
65 | Http_getter_types.Unresolvable_URI _ ->
66 HLog.error (file ^ " sets an unresolvable baseuri: "^buri)
67 | Http_getter_types.Key_not_found _ -> ());
72 CicNotationParser.Parse_error err ->
73 HLog.error ("Unable to parse: " ^ file);
74 HLog.error ("Parse error: " ^ err);
77 with End_of_file -> close_in ic);
80 | None -> failwith ("No baseuri defined in " ^ file)