1 (* Copyright (C) 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/
28 exception UnableToInclude of string
30 (* statements meaningful for matitadep *)
32 | IncludeDep of string
33 | BaseuriDep of string
34 | UriDep of UriManager.uri
36 let pp_dependency = function
37 | IncludeDep str -> "include \"" ^ str ^ "\""
38 | BaseuriDep str -> "set \"baseuri\" \"" ^ str ^ "\""
39 | UriDep uri -> "uri \"" ^ UriManager.string_of_uri uri ^ "\""
41 let parse_dependencies lexbuf =
43 CicNotationLexer.level2_ast_lexer.Token.tok_func (Obj.magic lexbuf)
47 | [< '("URI", u) >] ->
48 parse (UriDep (UriManager.uri_of_string u) :: acc)
49 | [< '("IDENT", "include"); '("QSTRING", fname) >] ->
50 parse (IncludeDep fname :: acc)
51 | [< '("IDENT", "set"); '("QSTRING", "baseuri"); '("QSTRING", baseuri) >] ->
52 parse (BaseuriDep baseuri :: acc)
53 | [< '("EOI", _) >] -> acc
54 | [< 'tok >] -> parse acc
55 | [< >] -> acc) tok_stream
59 let make_absolute paths path =
60 let rec aux = function
61 | [] -> ignore (Unix.stat path); path
63 let path = p ^ "/" ^ path in
65 ignore (Unix.stat path); path
66 with Unix.Unix_error _ -> aux tl
70 with Unix.Unix_error _ -> raise (UnableToInclude path)
73 let baseuri_of_script ~include_paths file =
74 let file = make_absolute include_paths file in
75 let ic = open_in file in
76 let istream = Ulexing.from_utf8_channel ic in
77 let rec find_baseuri =
79 [] -> failwith ("No baseuri defined in " ^ file)
80 | BaseuriDep s::_ -> s
81 | _::tl -> find_baseuri tl in
82 let buri = find_baseuri (parse_dependencies istream) in
83 let uri = Http_getter_misc.strip_trailing_slash buri in
84 if String.length uri < 5 || String.sub uri 0 5 <> "cic:/" then
85 HLog.error (file ^ " sets an incorrect baseuri: " ^ buri);
87 ignore(Http_getter.resolve ~writable:false uri)
89 | Http_getter_types.Unresolvable_URI _ ->
90 HLog.error (file ^ " sets an unresolvable baseuri: " ^ buri)
91 | Http_getter_types.Key_not_found _ -> ());