branch for universe

[helm.git] / components / getter / http_getter_wget.ml

diff --git a/components/getter/http_getter_wget.ml b/components/getter/http_getter_wget.ml
new file mode 100644 (file)
index 0000000..2052e7b
--- /dev/null
+++ b/components/getter/http_getter_wget.ml
@@ -0,0 +1,70 @@
+(* Copyright (C) 2000-2005, 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://cs.unibo.it/helm/.
+ *)
+
+(* $Id$ *)
+
+open Http_getter_types
+
+let send cmd =
+  try
+    ignore (Http_user_agent.get cmd)
+  with exn -> raise (Http_client_error (cmd, Printexc.to_string exn))
+
+let get url =
+  try
+    Http_user_agent.get url
+  with exn -> raise (Http_client_error (Printexc.to_string exn, url))
+
+let get_and_save url dest_filename =
+  let out_channel = open_out dest_filename in
+  (try
+    Http_user_agent.get_iter (output_string out_channel) url;
+  with exn ->
+    close_out out_channel;
+    Sys.remove dest_filename;
+    raise (Http_client_error (Printexc.to_string exn, url)));
+  close_out out_channel
+
+let get_and_save_to_tmp url =
+  let flat_string s s' c =
+    let cs = String.copy s in
+    for i = 0 to (String.length s) - 1 do
+      if String.contains s' s.[i] then cs.[i] <- c
+    done;
+    cs
+  in
+  let user = try Unix.getlogin () with _ -> "" in
+  let tmp_file =
+    Filename.temp_file (user ^ flat_string url ".-=:;!?/&" '_') ""
+  in
+  get_and_save url tmp_file;
+  tmp_file
+
+let exists url =
+  try
+    ignore (Http_user_agent.head url);
+    true
+  with Http_user_agent.Http_error _ -> false
+