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 let safe_remove fname = if Sys.file_exists fname then Sys.remove fname
33 (Unix.stat fname).Unix.st_kind = Unix.S_DIR
34 with Unix.Unix_error _ -> false
36 let is_regular fname =
38 (Unix.stat fname).Unix.st_kind = Unix.S_REG
39 with Unix.Unix_error _ -> false
41 let input_file fname =
42 let size = (Unix.stat fname).Unix.st_size in
43 let buf = Buffer.create size in
44 let ic = open_in fname in
45 Buffer.add_channel buf ic size;
49 let output_file data file =
50 let oc = open_out file in
51 output_string oc data;
55 let absolute_path file =
56 if file.[0] = '/' then file else Unix.getcwd () ^ "/" ^ file
58 let is_proof_script fname = true (** TODO Zack *)
59 let is_proof_object fname = true (** TODO Zack *)
61 let append_phrase_sep s =
62 if not (Pcre.pmatch ~pat:(sprintf "%s$" BuildTimeConf.phrase_sep) s) then
63 s ^ BuildTimeConf.phrase_sep
67 let strip_trailing_blanks =
68 let rex = Pcre.regexp "\\s*$" in
69 fun s -> Pcre.replace ~rex s
71 let strip_trailing_slash =
72 let rex = Pcre.regexp "/$" in
73 fun s -> Pcre.replace ~rex s
76 DomMisc.domImpl#createDocument ~namespaceURI:(Some DomMisc.mathml_ns)
77 ~qualifiedName:(Gdome.domString "math") ~doctype:None
80 DomMisc.domImpl#createDocument ~namespaceURI:(Some DomMisc.boxml_ns)
81 ~qualifiedName:(Gdome.domString "box") ~doctype:None
83 exception History_failure
85 type 'a memento = 'a array * int * int * int (* data, hd, tl, cur *)
87 class type ['a] history =
89 method add : 'a -> unit
92 method load: 'a memento -> unit
93 method save: 'a memento
98 class basic_history (head, tail, cur) =
100 val mutable hd = head (* insertion point *)
101 val mutable tl = tail (* oldest inserted item *)
102 val mutable cur = cur (* current item for the history *)
104 method is_begin = cur <= tl
105 method is_end = cur >= hd
109 class shell_history size =
110 let size = size + 1 in
111 let decr x = let x' = x - 1 in if x' < 0 then size + x' else x' in
112 let incr x = (x + 1) mod size in
114 val data = Array.create size ""
116 inherit basic_history (0, -1 , -1)
120 if tl = -1 then tl <- hd;
122 if hd = tl then tl <- incr tl;
125 if cur = tl then raise History_failure;
129 if cur = hd then raise History_failure;
131 if cur = hd then "" else data.(cur)
132 method load (data', hd', tl', cur') =
133 assert (Array.length data = Array.length data');
134 hd <- hd'; tl <- tl'; cur <- cur';
135 Array.blit data' 0 data 0 (Array.length data')
136 method save = (Array.copy data, hd, tl, cur)
139 class ['a] browser_history ?memento size init =
141 initializer match memento with Some m -> self#load m | _ -> ()
142 val data = Array.create size init
144 inherit basic_history (0, 0, 0)
147 if cur = tl then raise History_failure;
149 if cur = ~-1 then cur <- size - 1;
152 if cur = hd then raise History_failure;
154 if cur = size then cur <- 0;
157 if e <> data.(cur) then
160 if cur = size then cur <- 0;
161 if cur = tl then tl <- tl + 1;
162 if tl = size then tl <- 0;
166 method load (data', hd', tl', cur') =
167 assert (Array.length data = Array.length data');
168 hd <- hd'; tl <- tl'; cur <- cur';
169 Array.blit data' 0 data 0 (Array.length data')
170 method save = (Array.copy data, hd, tl, cur)
174 let instance = lazy (f ()) in
175 fun () -> Lazy.force instance
178 let errmsg = sprintf "Unable to create directory \"%s\"" d in
180 (match Unix.system ("mkdir -p " ^ d) with
181 | Unix.WEXITED 0 -> ()
182 | _ -> failwith errmsg)
183 with Unix.Unix_error _ -> failwith errmsg
185 let get_proof_status status =
186 match status.proof_status with
187 | Incomplete_proof s -> s
188 | _ -> statement_error "no ongoing proof"
190 let get_proof_metasenv status =
191 match status.proof_status with
193 | Incomplete_proof ((_, metasenv, _, _), _) -> metasenv
194 | Proof (_, metasenv, _, _) -> metasenv
195 | Intermediate m -> m
197 let get_proof_context status =
198 match status.proof_status with
199 | Incomplete_proof ((_, metasenv, _, _), goal) ->
200 let (_, context, _) = CicUtil.lookup_meta goal metasenv in
204 let get_proof_aliases status = status.aliases
206 let qualify status name = get_string_option status "baseuri" ^ "/" ^ name
208 let unopt = function None -> failwith "unopt: None" | Some v -> v
210 let image_path n = sprintf "%s/%s" BuildTimeConf.images_dir n
212 let end_ma_RE = Pcre.regexp "\\.ma$"
213 let obj_file_of_script f = Pcre.replace ~rex:end_ma_RE ~templ:".moo" f
215 let rec list_uniq = function
218 | h1::h2::tl when h1 = h2 -> list_uniq (h2 :: tl)
219 | h1::tl (* when h1 <> h2 *) -> h1 :: list_uniq tl
221 let debug_wrap name f =
222 prerr_endline (sprintf "debug_wrap: ==>> %s" name);
224 prerr_endline (sprintf "debug_wrap: <<== %s" name);