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
60 let strip_trailing_slash =
61 let rex = Pcre.regexp "/$" in
62 fun s -> Pcre.replace ~rex s
65 DomMisc.domImpl#createDocument ~namespaceURI:(Some DomMisc.mathml_ns)
66 ~qualifiedName:(Gdome.domString "math") ~doctype:None
69 DomMisc.domImpl#createDocument ~namespaceURI:(Some DomMisc.boxml_ns)
70 ~qualifiedName:(Gdome.domString "box") ~doctype:None
72 exception History_failure
74 type 'a memento = 'a array * int * int * int (* data, hd, tl, cur *)
76 class type ['a] history =
78 method add : 'a -> unit
81 method load: 'a memento -> unit
82 method save: 'a memento
87 class basic_history (head, tail, cur) =
89 val mutable hd = head (* insertion point *)
90 val mutable tl = tail (* oldest inserted item *)
91 val mutable cur = cur (* current item for the history *)
93 method is_begin = cur <= tl
94 method is_end = cur >= hd
98 class shell_history size =
99 let size = size + 1 in
100 let decr x = let x' = x - 1 in if x' < 0 then size + x' else x' in
101 let incr x = (x + 1) mod size in
103 val data = Array.create size ""
105 inherit basic_history (0, -1 , -1)
109 if tl = -1 then tl <- hd;
111 if hd = tl then tl <- incr tl;
114 if cur = tl then raise History_failure;
118 if cur = hd then raise History_failure;
120 if cur = hd then "" else data.(cur)
121 method load (data', hd', tl', cur') =
122 assert (Array.length data = Array.length data');
123 hd <- hd'; tl <- tl'; cur <- cur';
124 Array.blit data' 0 data 0 (Array.length data')
125 method save = (Array.copy data, hd, tl, cur)
128 class ['a] browser_history ?memento size init =
130 initializer match memento with Some m -> self#load m | _ -> ()
131 val data = Array.create size init
133 inherit basic_history (0, 0, 0)
136 if cur = tl then raise History_failure;
138 if cur = ~-1 then cur <- size - 1;
141 if cur = hd then raise History_failure;
143 if cur = size then cur <- 0;
146 if e <> data.(cur) then
149 if cur = size then cur <- 0;
150 if cur = tl then tl <- tl + 1;
151 if tl = size then tl <- 0;
155 method load (data', hd', tl', cur') =
156 assert (Array.length data = Array.length data');
157 hd <- hd'; tl <- tl'; cur <- cur';
158 Array.blit data' 0 data 0 (Array.length data')
159 method save = (Array.copy data, hd, tl, cur)
163 let instance = lazy (f ()) in
164 fun () -> Lazy.force instance
167 let errmsg = sprintf "Unable to create directory \"%s\"" d in
169 (match Unix.system ("mkdir -p " ^ d) with
170 | Unix.WEXITED 0 -> ()
171 | _ -> failwith errmsg)
172 with Unix.Unix_error _ -> failwith errmsg
174 let get_proof_status status =
175 match status.proof_status with
176 | Incomplete_proof s -> s
177 | _ -> statement_error "no ongoing proof"
179 let get_proof_metasenv status =
180 match status.proof_status with
182 | Incomplete_proof ((_, metasenv, _, _), _) -> metasenv
183 | Proof (_, metasenv, _, _) -> metasenv
184 | Intermediate m -> m
186 let get_proof_context status =
187 match status.proof_status with
188 | Incomplete_proof ((_, metasenv, _, _), goal) ->
189 let (_, context, _) = CicUtil.lookup_meta goal metasenv in
193 let get_proof_aliases status = status.aliases
195 let qualify status name = get_string_option status "baseuri" ^ "/" ^ name
197 let unopt = function None -> failwith "unopt: None" | Some v -> v
199 let image_path n = sprintf "%s/%s" BuildTimeConf.images_dir n
201 let end_ma_RE = Pcre.regexp "\\.ma$"
202 let obj_file_of_script f = Pcre.replace ~rex:end_ma_RE ~templ:".moo" f
204 let rec list_uniq = function
207 | h1::h2::tl when h1 = h2 -> list_uniq (h2 :: tl)
208 | h1::tl (* when h1 <> h2 *) -> h1 :: list_uniq tl
210 let debug_wrap name f =
211 prerr_endline (sprintf "debug_wrap: ==>> %s" name);
213 prerr_endline (sprintf "debug_wrap: <<== %s" name);