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[helm.git] / helm / ocaml / library / libraryNoDb.ml

diff --git a/helm/ocaml/library/libraryNoDb.ml b/helm/ocaml/library/libraryNoDb.ml
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+(* 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/
+ *)
+
+(* $Id$ *)
+
+open Printf
+
+exception Checksum_failure of string
+exception Corrupt_metadata of string
+exception Version_mismatch of string
+
+let magic = 1
+let format_name = "metadata"
+
+type metadata =
+  | Dependency of string  (* baseuri without trailing slash *)
+
+let eq_metadata (m1:metadata) (m2:metadata) = m1 = m2
+
+let save_metadata_to_file ~fname metadata =
+  HMarshal.save ~fmt:format_name ~version:magic ~fname metadata
+
+let load_metadata_from_file ~fname =
+  let raw = HMarshal.load ~fmt:format_name ~version:magic ~fname in
+  (raw: metadata list)
+
+let save_metadata ~fname metadata = save_metadata_to_file ~fname metadata
+let load_metadata ~fname = load_metadata_from_file ~fname
+