+++ /dev/null
-(* Copyright (C) 2005, HELM Team.
- *
- * This file is part of HELM, an Hypertextual, Electronic
- * Library of Mathematics, developed at the Computer Science
- * Department, University of Bologna, Italy.
- *
- * HELM is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * HELM is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with HELM; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
- * MA 02111-1307, USA.
- *
- * For details, see the HELM World-Wide-Web page,
- * http://helm.cs.unibo.it/
- *)
-
-(* $Id$ *)
-
-exception Corrupt_file of string
-exception Format_mismatch of string
-exception Version_mismatch of string
-
-let ensure_path_exists fname = HExtlib.mkdir (Filename.dirname fname)
-let marshal_flags = []
-
-let save ~fmt ~version ~fname data =
- ensure_path_exists fname;
- let oc = open_out fname in
- let marshalled = Marshal.to_string data marshal_flags in
- output_binary_int oc (Hashtbl.hash fmt); (* field 1 *)
- output_binary_int oc version; (* field 2 *)
- output_string oc fmt; (* field 3 *)
- output_string oc (string_of_int version); (* field 4 *)
- output_binary_int oc (Hashtbl.hash marshalled); (* field 5 *)
- output_string oc marshalled; (* field 6 *)
- close_out oc
-
-let expect ic fname s =
- let len = String.length s in
- let buf = String.create len in
- really_input ic buf 0 len;
- if buf <> s then raise (Corrupt_file fname)
-
-let load ~fmt ~version ~fname =
- let ic = open_in fname in
- HExtlib.finally
- (fun () -> close_in ic)
- (fun () ->
- try
- let fmt' = input_binary_int ic in (* field 1 *)
- if fmt' <> Hashtbl.hash fmt then raise (Format_mismatch fname);
- let version' = input_binary_int ic in (* field 2 *)
- if version' <> version then raise (Version_mismatch fname);
- expect ic fname fmt; (* field 3 *)
- expect ic fname (string_of_int version); (* field 4 *)
- let checksum' = input_binary_int ic in (* field 5 *)
- let marshalled' = HExtlib.input_all ic in (* field 6 *)
- if checksum' <> Hashtbl.hash marshalled' then
- raise (Corrupt_file fname);
- Marshal.from_string marshalled' 0
- with End_of_file -> raise (Corrupt_file fname))
- ()
-