2 * Copyright (C) 2000, HELM Team.
4 * This file is part of HELM, an Hypertextual, Electronic
5 * Library of Mathematics, developed at the Computer Science
6 * Department, University of Bologna, Italy.
8 * HELM is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * as published by the Free Software Foundation; either version 2
11 * of the License, or (at your option) any later version.
13 * HELM is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with HELM; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
23 * For details, see the HELM World-Wide-Web page,
24 * http://cs.unibo.it/helm/.
29 let fold_file f init fname =
30 let inchan = open_in fname in
31 let rec fold_lines' value =
33 let line = input_line inchan in
34 fold_lines' (f value line)
35 with End_of_file -> value
37 let res = (try fold_lines' init with e -> (close_in inchan; raise e)) in
40 let iter_file f = fold_file (fun _ line -> f line) ()
42 let hashtbl_sorted_fold f tbl init =
44 List.sort compare (Hashtbl.fold (fun key _ keys -> key::keys) tbl [])
46 List.fold_left (fun acc k -> f k (Hashtbl.find tbl k) acc) init sorted_keys
48 let wget ?output url =
50 (match output with Some file -> ["-O"; file] | None -> []) @ [url]
53 ~stdout:Shell.to_dev_null ~stderr:Shell.to_dev_null
54 [Shell.cmd "wget" flags]
56 (* TODO gzip and gunzip create executables file, but umask seems to be
57 correctly inherited from the shell .... boh *)
59 (* stderr shown as usual *)
60 let gzip ?(keep = false) fname =
61 if keep then (* keep original file *)
63 ~stdout:(Shell.to_file (fname ^ ".gz"))
64 [Shell.cmd "gzip" ["-f"; "-c"; fname]]
65 else (* don't keep original file *)
66 Shell.call [Shell.cmd "gzip" ["-f"; fname]]
68 (* stderr shown as usual *)
69 let gunzip ?(keep = false) fname =
70 if not (Pcre.pmatch ~pat:"\\.gz$" fname) then
71 failwith "gunzip: source file doesn't end with '.gz'";
72 let basename = Pcre.replace ~pat:"\\.gz$" fname in
73 if keep then (* keep original file *)
75 ~stdout:(Shell.to_file basename)
76 [Shell.cmd "gunzip" ["-f"; "-c"; fname]]
77 else (* don't keep original file *)
78 Shell.call [Shell.cmd "gunzip" ["-f"; fname]]
81 let buf = Buffer.create 28 in (* strlen("/tmp/fileSzb3Mw_http_getter") *)
83 ~stdout:(Shell.to_buffer buf)
84 [Shell.cmd "tempfile" ["--suffix=_http_getter"]];
85 Pcre.replace ~pat:"\n" (Buffer.contents buf)
87 let string_of_proc_status = function
88 | Unix.WEXITED code -> sprintf "[Exited: %d]" code
89 | Unix.WSIGNALED sg -> sprintf "[Killed: %d]" sg
90 | Unix.WSTOPPED sg -> sprintf "[Stopped: %d]" sg