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 = lazy (
119 DomMisc.domImpl#createDocument ~namespaceURI:(Some DomMisc.mathml_ns)
120 ~qualifiedName:(Gdome.domString "math") ~doctype:None)
122 let empty_boxml = lazy (
123 DomMisc.domImpl#createDocument ~namespaceURI:(Some DomMisc.boxml_ns)
124 ~qualifiedName:(Gdome.domString "box") ~doctype:None)
126 let closed_goal_mathml = lazy (
127 DomMisc.domImpl#createDocumentFromURI ~uri:BuildTimeConf.closed_xml ())
129 exception History_failure
131 type 'a memento = 'a array * int * int * int (* data, hd, tl, cur *)
133 class type ['a] history =
135 method add : 'a -> unit
138 method load: 'a memento -> unit
139 method save: 'a memento
140 method is_begin: bool
144 class basic_history (head, tail, cur) =
146 val mutable hd = head (* insertion point *)
147 val mutable tl = tail (* oldest inserted item *)
148 val mutable cur = cur (* current item for the history *)
150 method is_begin = cur <= tl
151 method is_end = cur >= hd
155 class shell_history size =
156 let size = size + 1 in
157 let decr x = let x' = x - 1 in if x' < 0 then size + x' else x' in
158 let incr x = (x + 1) mod size in
160 val data = Array.create size ""
162 inherit basic_history (0, -1 , -1)
166 if tl = -1 then tl <- hd;
168 if hd = tl then tl <- incr tl;
171 if cur = tl then raise History_failure;
175 if cur = hd then raise History_failure;
177 if cur = hd then "" else data.(cur)
178 method load (data', hd', tl', cur') =
179 assert (Array.length data = Array.length data');
180 hd <- hd'; tl <- tl'; cur <- cur';
181 Array.blit data' 0 data 0 (Array.length data')
182 method save = (Array.copy data, hd, tl, cur)
185 class ['a] browser_history ?memento size init =
187 initializer match memento with Some m -> self#load m | _ -> ()
188 val data = Array.create size init
190 inherit basic_history (0, 0, 0)
193 if cur = tl then raise History_failure;
195 if cur = ~-1 then cur <- size - 1;
198 if cur = hd then raise History_failure;
200 if cur = size then cur <- 0;
203 if e <> data.(cur) then
206 if cur = size then cur <- 0;
207 if cur = tl then tl <- tl + 1;
208 if tl = size then tl <- 0;
212 method load (data', hd', tl', cur') =
213 assert (Array.length data = Array.length data');
214 hd <- hd'; tl <- tl'; cur <- cur';
215 Array.blit data' 0 data 0 (Array.length data')
216 method save = (Array.copy data, hd, tl, cur)
220 let instance = lazy (f ()) in
221 fun () -> Lazy.force instance
223 let get_current_proof status =
224 match status.proof_status with
225 | Incomplete_proof { proof = p } -> p
226 | _ -> statement_error "no ongoing proof"
228 let get_proof_metasenv status =
229 match status.proof_status with
231 | Proof (_, metasenv, _, _)
232 | Incomplete_proof { proof = (_, metasenv, _, _) }
233 | Intermediate metasenv ->
236 let get_proof_context status goal =
237 match status.proof_status with
238 | Incomplete_proof { proof = (_, metasenv, _, _) } ->
239 let (_, context, _) = CicUtil.lookup_meta goal metasenv in
243 let get_proof_conclusion status goal =
244 match status.proof_status with
245 | Incomplete_proof { proof = (_, metasenv, _, _) } ->
246 let (_, _, conclusion) = CicUtil.lookup_meta goal metasenv in
248 | _ -> statement_error "no ongoing proof"
250 let get_stack status =
251 match status.proof_status with
252 | Incomplete_proof p -> p.stack
253 | Proof _ -> Continuationals.Stack.empty
256 let set_stack stack status =
257 match status.proof_status with
258 | Incomplete_proof p ->
259 { status with proof_status = Incomplete_proof { p with stack = stack } }
261 assert (Continuationals.Stack.is_empty stack);
265 let qualify status name = get_string_option status "baseuri" ^ "/" ^ name
267 let image_path n = sprintf "%s/%s" BuildTimeConf.images_dir n
269 let end_ma_RE = Pcre.regexp "\\.ma$"
271 let obj_file_of_baseuri baseuri =
273 Helm_registry.get "matita.basedir" ^ "/xml" ^
274 Pcre.replace ~pat:"^cic:" ~templ:"" baseuri
278 let obj_file_of_script f =
279 if f = "coq.ma" then BuildTimeConf.coq_notation_script else
280 let baseuri = baseuri_of_file f in
281 obj_file_of_baseuri baseuri
283 let list_tl_at ?(equality=(==)) e l =
286 | [] -> raise Not_found
287 | hd :: tl as l when equality hd e -> l