1 (* Copyright (C) 2000, 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://cs.unibo.it/helm/.
27 * "cic:/a/b/c.con" => ("cic:/a/b/c.con", id )
28 * "cic:/a/b/c.ind#xpointer(1/1)" => ("cic:/a/b/c.con#xpointer(1/1)", id)
29 * "cic:/a/b/c.ind#xpointer(1/1/1)" => ("cic:/a/b/c.con#xpointer(1/1/1)", id)
38 (* (uriwithxpointer, uniqueid)
39 * where uniqueid is used to build a set of uri *)
40 type uri = string * int;;
46 let string_of_uri (uri,_) =
49 let name_of_uri (uri, _) =
51 try String.rindex uri '#' with Not_found -> String.length uri - 1
53 let index1 = String.rindex_from uri xpointer_offset '/' + 1 in
54 let index2 = String.rindex uri '.' in
55 String.sub uri index1 (index2 - index1)
57 let buri_of_uri (uri,_) =
59 try String.rindex uri '#' with Not_found -> String.length uri - 1
61 let index = String.rindex_from uri xpointer_offset '/' in
62 String.sub uri 0 index
64 module OrderedStrings =
67 let compare (s1 : t) (s2 : t) = compare s1 s2
71 module MapStringsToUri = Map.Make(OrderedStrings);;
73 (* Invariant: the map is the identity function,
75 * let str' = (MapStringsToUri.find str !set_of_uri) in
76 * str' == (MapStringsToUri.find str' !set_of_uri)
78 let set_of_uri = ref MapStringsToUri.empty;;
80 exception IllFormedUri of string;;
82 let _dottypes = ".types"
83 let _types = "types",5
87 let _dotbody = ".body"
90 let _xpointer = "#xpointer(1/"
96 let _xpointer8 = "xpointer"
99 let is_malformed suri =
101 if String.sub suri 0 5 <> _cic5 then true
103 let len = String.length suri - 5 in
104 let last5 = String.sub suri len 5 in
105 let last3 = String.sub last5 2 3 in
106 if last3 = _con3 || last3 = _var3 || last3 = _ind3 ||
107 last3 = _ann3 || last5 = _types5 || last5 = _dotbody then
111 let index = String.rindex suri '#' + 1 in
112 let xptr = String.sub suri index 8 in
113 if xptr = _xpointer8 then
117 with Not_found -> true
118 with Invalid_argument _ -> true
120 (* hash conses an uri *)
121 let uri_of_string suri =
123 MapStringsToUri.find suri !set_of_uri
125 if is_malformed suri then
126 raise (IllFormedUri suri)
128 let new_uri = suri, fresh_id () in
129 set_of_uri := MapStringsToUri.add suri new_uri !set_of_uri;
133 let strip_xpointer ((uri,_) as olduri) =
135 let index = String.rindex uri '#' in
136 let no_xpointer = String.sub uri 0 index in
137 uri_of_string no_xpointer
141 let clear_suffix uri ?(pat2="",0) pat1 =
143 let index = String.rindex uri '.' in
144 let index' = index + 1 in
145 let suffix = String.sub uri index' (String.length uri - index') in
146 if fst pat1 = suffix || fst pat2 = suffix then
147 String.sub uri 0 index
151 Not_found -> assert false
153 let has_suffix uri (pat,n) =
155 let suffix = String.sub uri (String.length uri - n) n in
158 Not_found -> assert false
161 let cicuri_of_uri (uri, _) = uri_of_string (clear_suffix uri ~pat2:_types _ann)
163 let annuri_of_uri (uri , _) = uri_of_string ((clear_suffix uri _ann) ^ _dotann)
165 let uri_is_annuri (uri, _) = has_suffix uri _ann
167 let uri_is_var (uri, _) = has_suffix uri _var
169 let uri_is_con (uri, _) = has_suffix uri _con
171 let uri_is_ind (uri, _) = has_suffix uri _ind
173 let bodyuri_of_uri (uri, _) =
174 if has_suffix uri _con then
175 Some (uri_of_string (uri ^ _dotbody))
180 let innertypesuri_of_uri (uri, _) =
181 uri_of_string ((clear_suffix uri _types) ^ _dottypes)
184 let uri_of_uriref (uri, _) typeno consno =
185 let typeno = typeno + 1 in
188 | None -> Printf.sprintf "%s%s%d)" uri _xpointer typeno
189 | Some n -> Printf.sprintf "%s%s%d/%d)" uri _xpointer typeno n
193 let compare (_,id1) (_,id2) = id1 - id2
198 let compare = compare (* the one above, not Pervasives.compare *)
201 module UriSet = Set.Make (OrderedUri)