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/
29 (** Functions "imported" from Http_getter_misc *)
31 let strip_trailing_slash = Http_getter_misc.strip_trailing_slash
32 let normalize_dir = Http_getter_misc.normalize_dir
33 let strip_suffix = Http_getter_misc.strip_suffix
35 let baseuri_of_baseuri_decl st =
37 | GrafiteAst.Executable (_, GrafiteAst.Command (_, GrafiteAst.Set (_, "baseuri", buri))) ->
41 let baseuri_of_file file =
43 let ic = open_in file in
44 let istream = Ulexing.from_utf8_channel ic in
48 let stm = GrafiteParser.parse_statement istream in
49 match baseuri_of_baseuri_decl stm with
51 let u = strip_trailing_slash buri in
52 if String.length u < 5 || String.sub u 0 5 <> "cic:/" then
53 MatitaLog.error (file ^ " sets an incorrect baseuri: " ^ buri);
55 ignore(Http_getter.resolve u)
57 | Http_getter_types.Unresolvable_URI _ ->
58 MatitaLog.error (file ^ " sets an unresolvable baseuri: "^buri)
59 | Http_getter_types.Key_not_found _ -> ());
64 CicNotationParser.Parse_error _ as exn ->
65 prerr_endline ("Unable to parse: " ^ file);
66 prerr_endline (MatitaExcPp.to_string exn);
69 with End_of_file -> close_in ic);
72 | None -> failwith ("No baseuri defined in " ^ file)
77 Http_getter_types.Ls_section _ -> true
78 | Http_getter_types.Ls_object _ -> false)
79 (Http_getter.ls (Http_getter_misc.strip_trailing_slash buri ^ "/"))
81 let safe_remove fname = if Sys.file_exists fname then Sys.remove fname
85 let od = Unix.opendir d in
87 ignore (Unix.readdir od);
88 ignore (Unix.readdir od);
89 ignore (Unix.readdir od);
95 with Unix.Unix_error _ -> true
97 let safe_rmdir d = try Unix.rmdir d with Unix.Unix_error _ -> ()
99 let rec rmdir_descend d =
100 if is_dir_empty d then
103 rmdir_descend (Filename.dirname d)
106 let absolute_path file =
107 if file.[0] = '/' then file else Unix.getcwd () ^ "/" ^ file
109 let is_proof_script fname = true (** TODO Zack *)
110 let is_proof_object fname = true (** TODO Zack *)
112 let append_phrase_sep s =
113 if not (Pcre.pmatch ~pat:(sprintf "%s$" BuildTimeConf.phrase_sep) s) then
114 s ^ BuildTimeConf.phrase_sep
118 let empty_mathml () =
119 DomMisc.domImpl#createDocument ~namespaceURI:(Some DomMisc.mathml_ns)
120 ~qualifiedName:(Gdome.domString "math") ~doctype:None
123 DomMisc.domImpl#createDocument ~namespaceURI:(Some DomMisc.boxml_ns)
124 ~qualifiedName:(Gdome.domString "box") ~doctype:None
126 exception History_failure
128 type 'a memento = 'a array * int * int * int (* data, hd, tl, cur *)
130 class type ['a] history =
132 method add : 'a -> unit
135 method load: 'a memento -> unit
136 method save: 'a memento
137 method is_begin: bool
141 class basic_history (head, tail, cur) =
143 val mutable hd = head (* insertion point *)
144 val mutable tl = tail (* oldest inserted item *)
145 val mutable cur = cur (* current item for the history *)
147 method is_begin = cur <= tl
148 method is_end = cur >= hd
152 class shell_history size =
153 let size = size + 1 in
154 let decr x = let x' = x - 1 in if x' < 0 then size + x' else x' in
155 let incr x = (x + 1) mod size in
157 val data = Array.create size ""
159 inherit basic_history (0, -1 , -1)
163 if tl = -1 then tl <- hd;
165 if hd = tl then tl <- incr tl;
168 if cur = tl then raise History_failure;
172 if cur = hd then raise History_failure;
174 if cur = hd then "" else data.(cur)
175 method load (data', hd', tl', cur') =
176 assert (Array.length data = Array.length data');
177 hd <- hd'; tl <- tl'; cur <- cur';
178 Array.blit data' 0 data 0 (Array.length data')
179 method save = (Array.copy data, hd, tl, cur)
182 class ['a] browser_history ?memento size init =
184 initializer match memento with Some m -> self#load m | _ -> ()
185 val data = Array.create size init
187 inherit basic_history (0, 0, 0)
190 if cur = tl then raise History_failure;
192 if cur = ~-1 then cur <- size - 1;
195 if cur = hd then raise History_failure;
197 if cur = size then cur <- 0;
200 if e <> data.(cur) then
203 if cur = size then cur <- 0;
204 if cur = tl then tl <- tl + 1;
205 if tl = size then tl <- 0;
209 method load (data', hd', tl', cur') =
210 assert (Array.length data = Array.length data');
211 hd <- hd'; tl <- tl'; cur <- cur';
212 Array.blit data' 0 data 0 (Array.length data')
213 method save = (Array.copy data, hd, tl, cur)
217 let instance = lazy (f ()) in
218 fun () -> Lazy.force instance
220 let get_proof_status status =
221 match status.proof_status with
222 | Incomplete_proof s -> s
223 | _ -> statement_error "no ongoing proof"
225 let get_proof_metasenv status =
226 match status.proof_status with
228 | Incomplete_proof ((_, metasenv, _, _), _) -> metasenv
229 | Proof (_, metasenv, _, _) -> metasenv
230 | Intermediate m -> m
232 let get_proof_context status =
233 match status.proof_status with
234 | Incomplete_proof ((_, metasenv, _, _), goal) ->
235 let (_, context, _) = CicUtil.lookup_meta goal metasenv in
239 let get_proof_conclusion status =
240 match status.proof_status with
241 | Incomplete_proof ((_, metasenv, _, _), goal) ->
242 let (_, _, conclusion) = CicUtil.lookup_meta goal metasenv in
244 | _ -> statement_error "no ongoing proof"
246 let qualify status name = get_string_option status "baseuri" ^ "/" ^ name
248 let image_path n = sprintf "%s/%s" BuildTimeConf.images_dir n
250 let end_ma_RE = Pcre.regexp "\\.ma$"
252 let obj_file_of_baseuri baseuri =
254 Helm_registry.get "matita.basedir" ^ "/xml" ^
255 Pcre.replace ~pat:"^cic:" ~templ:"" baseuri
259 let obj_file_of_script f =
260 if f = "coq.ma" then BuildTimeConf.coq_notation_script else
261 let baseuri = baseuri_of_file f in
262 obj_file_of_baseuri baseuri
264 let rec list_uniq = function
267 | h1::h2::tl when h1 = h2 -> list_uniq (h2 :: tl)
268 | h1::tl (* when h1 <> h2 *) -> h1 :: list_uniq tl
270 let list_tl_at ?(equality=(==)) e l =
273 | [] -> raise Not_found
274 | hd :: tl as l when equality hd e -> l