X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fhttp_getter%2Fhttp_getter_env.ml;h=54269279535eaf0828818a2770672d0fa24375d4;hb=fde0ad77237a2fbdfb5621d5b5085fe7c82e3f92;hp=661b4ae47762ed38b0e4bf254e0cbef559f1092c;hpb=bcb3a166855c11d57aee0130df8f666c9db303ec;p=helm.git

diff --git a/helm/http_getter/http_getter_env.ml b/helm/http_getter/http_getter_env.ml
index 661b4ae47..542692795 100644
--- a/helm/http_getter/http_getter_env.ml
+++ b/helm/http_getter/http_getter_env.ml
@@ -3,8 +3,7 @@
  *    Stefano Zacchiroli <zack@cs.unibo.it>
  *    for the HELM Team http://helm.cs.unibo.it/
  *
- *  This file is part of HELM, an Hypertextual, Electronic
- *  Library of Mathematics, developed at the Computer Science
+ *  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
@@ -77,9 +76,17 @@ let safe_getenv ?(from = Both) var =
       | v -> return_value var v)))
 
 let servers_file = safe_getenv "HTTP_GETTER_SERVERS_FILE"
+
+  (* TODO BUG HERE: is commented lines are included in the servers file the
+  server index (used for example by the remove_server method) gets out of sync!
+  *)
 let parse_servers () =
-  (let cons hd tl = hd @ [ tl ] in
-  Http_getter_misc.fold_file cons [] servers_file)
+  List.rev (Http_getter_misc.fold_file
+    (fun servers line ->
+      if Http_getter_misc.is_blank_line line then servers else line::servers)
+    []
+    servers_file)
+;;
 let servers = ref (parse_servers ())
 let reload_servers () = servers := parse_servers ()
 
@@ -151,5 +158,20 @@ servers:
     cic_dir nuprl_dir rdf_dir dtd_dir servers_file host port my_own_url
     dtd_base_url
     (match cache_mode with Enc_normal -> "Normal" | Enc_gzipped -> "GZipped")
-    conf_file conf_dir (String.concat "\n\t" !servers)
+    conf_file conf_dir
+    (String.concat "\n\t" (* servers list prepended with server number *)
+      (List.map
+        (let idx = ref ~-1 in
+        fun server -> incr idx; sprintf "%3d: %s" !idx server)
+        !servers))
+
+let add_server ?position url =
+  (match position with
+  | Some p -> Http_getter_misc.add_line ~fname:servers_file ~position:p url
+  | None -> Http_getter_misc.add_line ~fname:servers_file url);
+  reload_servers ()
+
+let remove_server position =
+  Http_getter_misc.remove_line ~fname:servers_file position;
+  reload_servers ()