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/
31 (Unix.stat fname).Unix.st_kind = Unix.S_DIR
32 with Unix.Unix_error _ -> false
34 let is_regular fname =
36 (Unix.stat fname).Unix.st_kind = Unix.S_REG
37 with Unix.Unix_error _ -> false
39 let input_file fname =
40 let size = (Unix.stat fname).Unix.st_size in
41 let buf = Buffer.create size in
42 let ic = open_in fname in
43 Buffer.add_channel buf ic size;
47 let is_proof_script fname = true (** TODO Zack *)
48 let is_proof_object fname = true (** TODO Zack *)
50 let append_phrase_sep s =
51 if not (Pcre.pmatch ~pat:(sprintf "%s$" BuildTimeConf.phrase_sep) s) then
52 s ^ BuildTimeConf.phrase_sep
56 let strip_trailing_blanks =
57 let rex = Pcre.regexp "\\s*$" in
58 fun s -> Pcre.replace ~rex s
61 Misc.domImpl#createDocument ~namespaceURI:(Some Misc.mathml_ns)
62 ~qualifiedName:(Gdome.domString "math") ~doctype:None
65 Misc.domImpl#createDocument ~namespaceURI:(Some Misc.boxml_ns)
66 ~qualifiedName:(Gdome.domString "box") ~doctype:None
68 exception History_failure
70 type 'a memento = 'a array * int * int * int (* data, hd, tl, cur *)
72 class type ['a] history =
74 method add : 'a -> unit
77 method load: 'a memento -> unit
78 method save: 'a memento
81 class shell_history size =
82 let size = size + 1 in
83 let decr x = let x' = x - 1 in if x' < 0 then size + x' else x' in
84 let incr x = (x + 1) mod size in
86 val data = Array.create size ""
87 val mutable hd = 0 (* insertion point *)
88 val mutable tl = -1 (* oldest inserted item *)
89 val mutable cur = -1 (* current item for the history *)
92 if tl = -1 then tl <- hd;
94 if hd = tl then tl <- incr tl;
97 if cur = tl then raise History_failure;
101 if cur = hd then raise History_failure;
103 if cur = hd then "" else data.(cur)
104 method load (data', hd', tl', cur') =
105 assert (Array.length data = Array.length data');
106 hd <- hd'; tl <- tl'; cur <- cur';
107 Array.blit data' 0 data 0 (Array.length data')
108 method save = (Array.copy data, hd, tl, cur)
111 class ['a] browser_history ?memento size init =
113 initializer match memento with Some m -> self#load m | _ -> ()
114 val data = Array.create size init
119 if cur = tl then raise History_failure;
121 if cur = ~-1 then cur <- size - 1;
124 if cur = hd then raise History_failure;
126 if cur = size then cur <- 0;
130 if cur = size then cur <- 0;
131 if cur = tl then tl <- tl + 1;
132 if tl = size then tl <- 0;
135 method load (data', hd', tl', cur') =
136 assert (Array.length data = Array.length data');
137 hd <- hd'; tl <- tl'; cur <- cur';
138 Array.blit data' 0 data 0 (Array.length data')
139 method save = (Array.copy data, hd, tl, cur)
143 let instance = lazy (f ()) in
144 fun () -> Lazy.force instance
147 let errmsg = sprintf "Unable to create directory \"%s\"" d in
149 (match Unix.system ("mkdir -p " ^ d) with
150 | Unix.WEXITED 0 -> ()
151 | _ -> failwith errmsg)
152 with Unix.Unix_error _ -> failwith errmsg
154 let get_proof_status status =
155 match status.proof_status with
156 | Incomplete_proof s -> s
157 | _ -> statement_error "no ongoing proof"
159 let get_proof_metasenv status =
160 match status.proof_status with
162 | Incomplete_proof ((_, metasenv, _, _), _) -> metasenv
163 | Proof (_, metasenv, _, _) -> metasenv
164 | Intermediate m -> m
166 let get_proof_context status =
167 match status.proof_status with
168 | Incomplete_proof ((_, metasenv, _, _), goal) ->
169 let (_, context, _) = CicUtil.lookup_meta goal metasenv in
173 let get_proof_aliases status = status.aliases
175 let qualify status name = get_string_option status "baseuri" ^ "/" ^ name
177 let unopt = function None -> failwith "unopt: None" | Some v -> v