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/.
29 * "cic:/a/b/c.con" => ("cic:/a/b/c.con", id )
30 * "cic:/a/b/c.ind#xpointer(1/1)" => ("cic:/a/b/c.con#xpointer(1/1)", id)
31 * "cic:/a/b/c.ind#xpointer(1/1/1)" => ("cic:/a/b/c.con#xpointer(1/1/1)", id)
40 (* (uriwithxpointer, uniqueid)
41 * where uniqueid is used to build a set of uri *)
42 type uri = string * int;;
48 let string_of_uri (uri,_) =
51 let name_of_uri (uri, _) =
53 try String.rindex uri '#' with Not_found -> String.length uri - 1
55 let index1 = String.rindex_from uri xpointer_offset '/' + 1 in
56 let index2 = String.rindex uri '.' in
57 String.sub uri index1 (index2 - index1)
59 let nameext_of_uri (uri, _) =
60 let xpointer_offset, mah =
61 try String.rindex uri '#', 0 with Not_found -> String.length uri - 1, 1
63 let index1 = String.rindex_from uri xpointer_offset '/' + 1 in
64 String.sub uri index1 (xpointer_offset - index1 + mah)
66 let buri_of_uri (uri,_) =
68 try String.rindex uri '#' with Not_found -> String.length uri - 1
70 let index = String.rindex_from uri xpointer_offset '/' in
71 String.sub uri 0 index
73 module OrderedStrings =
76 let compare (s1 : t) (s2 : t) = compare s1 s2
80 module MapStringsToUri = Map.Make(OrderedStrings);;
82 (* Invariant: the map is the identity function,
84 * let str' = (MapStringsToUri.find str !set_of_uri) in
85 * str' == (MapStringsToUri.find str' !set_of_uri)
87 let set_of_uri = ref MapStringsToUri.empty;;
89 exception IllFormedUri of string;;
91 let _dottypes = ".types"
92 let _types = "types",5
93 let _dotuniv = ".univ"
98 let _dotbody = ".body"
101 let _xpointer = "#xpointer(1/"
107 let _types5 = "types"
108 let _xpointer8 = "xpointer"
111 let is_malformed suri =
113 if String.sub suri 0 5 <> _cic5 then true
115 let len = String.length suri - 5 in
116 let last5 = String.sub suri len 5 in
117 let last4 = String.sub last5 1 4 in
118 let last3 = String.sub last5 2 3 in
119 if last3 = _con3 || last3 = _var3 || last3 = _ind3 ||
120 last3 = _ann3 || last5 = _types5 || last5 = _dotbody ||
125 let index = String.rindex suri '#' + 1 in
126 let xptr = String.sub suri index 8 in
127 if xptr = _xpointer8 then
131 with Not_found -> true
132 with Invalid_argument _ -> true
134 (* hash conses an uri *)
135 let uri_of_string suri =
137 MapStringsToUri.find suri !set_of_uri
139 if is_malformed suri then
140 raise (IllFormedUri suri)
142 let new_uri = suri, fresh_id () in
143 set_of_uri := MapStringsToUri.add suri new_uri !set_of_uri;
147 let strip_xpointer ((uri,_) as olduri) =
149 let index = String.rindex uri '#' in
150 let no_xpointer = String.sub uri 0 index in
151 uri_of_string no_xpointer
155 let clear_suffix uri ?(pat2="",0) pat1 =
157 let index = String.rindex uri '.' in
158 let index' = index + 1 in
159 let suffix = String.sub uri index' (String.length uri - index') in
160 if fst pat1 = suffix || fst pat2 = suffix then
161 String.sub uri 0 index
165 Not_found -> assert false
167 let has_suffix uri (pat,n) =
169 let suffix = String.sub uri (String.length uri - n) n in
172 Not_found -> assert false
175 let cicuri_of_uri (uri, _) = uri_of_string (clear_suffix uri ~pat2:_types _ann)
177 let annuri_of_uri (uri , _) = uri_of_string ((clear_suffix uri _ann) ^ _dotann)
179 let uri_is_annuri (uri, _) = has_suffix uri _ann
181 let uri_is_var (uri, _) = has_suffix uri _var
183 let uri_is_con (uri, _) = has_suffix uri _con
185 let uri_is_ind (uri, _) = has_suffix uri _ind
187 let bodyuri_of_uri (uri, _) =
188 if has_suffix uri _con then
189 Some (uri_of_string (uri ^ _dotbody))
194 let ind_uri_split ((s, _) as uri) =
195 let noxp = strip_xpointer uri in
197 (let arg_index = String.rindex s '(' in
199 (let ty_index = String.index_from s arg_index '/' in
201 (let k_index = String.index_from s (ty_index+1) '/' in
202 let tyno = int_of_string (String.sub s (ty_index + 1) (k_index - ty_index - 1)) in
203 let kno = int_of_string (String.sub s (k_index + 1) (String.length s - k_index - 2)) in
204 noxp, Some tyno, Some kno)
206 let tyno = int_of_string (String.sub s (ty_index + 1) (String.length s - ty_index - 2)) in
207 noxp, Some tyno, None)
208 with Not_found -> noxp, None, None
210 with Not_found -> noxp, None, None
214 * we should remove _types, _univ, _ann all toghether *)
215 let innertypesuri_of_uri (uri, _) =
216 uri_of_string ((clear_suffix uri _types) ^ _dottypes)
218 let univgraphuri_of_uri (uri,_) =
219 uri_of_string ((clear_suffix uri _univ) ^ _dotuniv)
223 let uri_of_uriref (uri, _) typeno consno =
224 let typeno = typeno + 1 in
227 | None -> Printf.sprintf "%s%s%d)" uri _xpointer typeno
228 | Some n -> Printf.sprintf "%s%s%d/%d)" uri _xpointer typeno n
232 let compare (_,id1) (_,id2) = id1 - id2
237 let compare = compare (* the one above, not Pervasives.compare *)
240 module UriSet = Set.Make (OrderedUri)
243 module OrderedUriPair =
246 let compare (u11, u12) (u21, u22) =
247 match compare u11 u21 with
248 | 0 -> compare u12 u22
252 module UriPairSet = Set.Make (OrderedUriPair)
262 module UriHashtbl = Hashtbl.Make (HashedUri)