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))) ->
44 Http_getter_types.Ls_section _ -> true
45 | Http_getter_types.Ls_object _ -> false)
46 (Http_getter.ls (Http_getter_misc.strip_trailing_slash buri ^ "/"))
48 let absolute_path file =
49 if file.[0] = '/' then file else Unix.getcwd () ^ "/" ^ file
51 let is_proof_script fname = true (** TODO Zack *)
52 let is_proof_object fname = true (** TODO Zack *)
54 let append_phrase_sep s =
55 if not (Pcre.pmatch ~pat:(sprintf "%s$" BuildTimeConf.phrase_sep) s) then
56 s ^ BuildTimeConf.phrase_sep
60 exception History_failure
62 type 'a memento = 'a array * int * int * int (* data, hd, tl, cur *)
64 class type ['a] history =
66 method add : 'a -> unit
69 method load: 'a memento -> unit
70 method save: 'a memento
75 class basic_history (head, tail, cur) =
77 val mutable hd = head (* insertion point *)
78 val mutable tl = tail (* oldest inserted item *)
79 val mutable cur = cur (* current item for the history *)
81 method is_begin = cur <= tl
82 method is_end = cur >= hd
86 class shell_history size =
87 let size = size + 1 in
88 let decr x = let x' = x - 1 in if x' < 0 then size + x' else x' in
89 let incr x = (x + 1) mod size in
91 val data = Array.create size ""
93 inherit basic_history (0, -1 , -1)
97 if tl = -1 then tl <- hd;
99 if hd = tl then tl <- incr tl;
102 if cur = tl then raise History_failure;
106 if cur = hd then raise History_failure;
108 if cur = hd then "" else data.(cur)
109 method load (data', hd', tl', cur') =
110 assert (Array.length data = Array.length data');
111 hd <- hd'; tl <- tl'; cur <- cur';
112 Array.blit data' 0 data 0 (Array.length data')
113 method save = (Array.copy data, hd, tl, cur)
116 class ['a] browser_history ?memento size init =
118 initializer match memento with Some m -> self#load m | _ -> ()
119 val data = Array.create size init
121 inherit basic_history (0, 0, 0)
124 if cur = tl then raise History_failure;
126 if cur = ~-1 then cur <- size - 1;
129 if cur = hd then raise History_failure;
131 if cur = size then cur <- 0;
134 if e <> data.(cur) then
137 if cur = size then cur <- 0;
138 if cur = tl then tl <- tl + 1;
139 if tl = size then tl <- 0;
143 method load (data', hd', tl', cur') =
144 assert (Array.length data = Array.length data');
145 hd <- hd'; tl <- tl'; cur <- cur';
146 Array.blit data' 0 data 0 (Array.length data')
147 method save = (Array.copy data, hd, tl, cur)
151 let instance = lazy (f ()) in
152 fun () -> Lazy.force instance
154 let image_path n = sprintf "%s/%s" BuildTimeConf.images_dir n
156 let end_ma_RE = Pcre.regexp "\\.ma$"
158 let list_tl_at ?(equality=(==)) e l =
161 | [] -> raise Not_found
162 | hd :: tl as l when equality hd e -> l
167 let baseuri_of_file file =
168 let uri = ref None in
169 let ic = open_in file in
170 let istream = Ulexing.from_utf8_channel ic in
174 let stm = GrafiteParser.parse_statement istream in
175 match baseuri_of_baseuri_decl stm with
177 let u = strip_trailing_slash buri in
178 if String.length u < 5 || String.sub u 0 5 <> "cic:/" then
179 HLog.error (file ^ " sets an incorrect baseuri: " ^ buri);
181 ignore(Http_getter.resolve u)
183 | Http_getter_types.Unresolvable_URI _ ->
184 HLog.error (file ^ " sets an unresolvable baseuri: "^buri)
185 | Http_getter_types.Key_not_found _ -> ());
190 CicNotationParser.Parse_error err ->
191 HLog.error ("Unable to parse: " ^ file);
192 HLog.error ("Parse error: " ^ err);
195 with End_of_file -> close_in ic);
198 | None -> failwith ("No baseuri defined in " ^ file)
200 let obj_file_of_script ~basedir f =
201 if f = "coq.ma" then BuildTimeConf.coq_notation_script else
202 let baseuri = baseuri_of_file f in
203 LibraryMisc.obj_file_of_baseuri ~basedir ~baseuri