This commit was manufactured by cvs2svn to create tag 'v0_0_2'.

[helm.git] / helm / interface / getter.ml

diff --git a/helm/interface/getter.ml b/helm/interface/getter.ml
index 5b973f2efc302f2863569e6d1a03a7274393b175..85e64117b6be0fe66366d4eaea95c811364e8617 100644 (file)
--- a/helm/interface/getter.ml
+++ b/helm/interface/getter.ml
@@ -32,12 +32,83 @@
 (*                                                                            *)
 (******************************************************************************)
 
+exception ErrorGetting of string;;
 
-(*CSC: il getter _DEVE_ diventare un semplice "binding" a quello in Perl *)
+module OrderedStrings =
+ struct
+  type t = string
+  let compare (s1 : t) (s2 : t) = compare s1 s2
+ end
+;;
+
+module MapOfStrings = Map.Make(OrderedStrings);;
+
+let read_index url =
+ let module C = Configuration in
+  if Sys.command ("helm_wget " ^ C.tmpdir ^ " " ^ url ^ "/\"" ^
+   C.indexname ^ "\"") <> 0
+  then
+   raise (ErrorGetting url) ;
+  let tmpfilename = C.tmpdir ^ "/" ^ C.indexname in
+   let fd = open_in tmpfilename in
+   let uris = ref [] in
+    try
+     while true do
+      let (uri,comp) =
+       match (Str.split (Str.regexp "[ \t]+") (input_line fd)) with
+         [uri] -> (uri,"")
+       | [uri;comp] -> (uri,".gz")
+      in
+       uris := (uri,comp) :: !uris
+     done ;
+     [] (* only to make the compiler happy *)
+    with
+     End_of_file ->
+      Sys.remove tmpfilename ;
+      !uris
+;;
+
+(* mk_urls_of_uris list_of_servers_base_urls *)
+let rec mk_urls_of_uris =
+ function
+    [] -> MapOfStrings.empty
+  | he::tl ->
+     let map = mk_urls_of_uris tl in
+      let uris = read_index he in
+       let url_of_uri (uri,comp) =
+        let url = uri  ^ ".xml" ^ comp in
+         let url' = Str.replace_first (Str.regexp "cic:") he url in
+         let url'' = Str.replace_first (Str.regexp "theory:") he url' in
+          url''
+       in
+        List.fold_right
+         (fun (uri,comp) m -> MapOfStrings.add uri (url_of_uri (uri,comp)) m)
+         uris map
+;;
+
+exception PerlGetterNotResponding;;
 
 let update () =
-(* deliver update request to http_getter *)
- ClientHTTP.send (Configuration.getter_url ^ "update")
+ let module C = Configuration in
+  let fd = open_in C.servers_file in
+  let servers = ref [] in
+   try
+    while true do
+     servers := (input_line fd) :: !servers
+    done
+   with
+    End_of_file ->
+     let urls_of_uris = mk_urls_of_uris (List.rev !servers) in
+      (try Sys.remove (C.uris_dbm ^ ".db") with _ -> ()) ;
+      let dbm =
+       Dbm.opendbm C.uris_dbm [Dbm.Dbm_wronly ; Dbm.Dbm_create] 0o660
+      in
+       MapOfStrings.iter (fun uri url -> Dbm.add dbm uri url) urls_of_uris ;
+       Dbm.close dbm ;
+       (* Inform also the Perl-getter *)
+       if Sys.command ("wget -O /dev/null http://localhost:8081/update") <> 0
+       then
+        raise PerlGetterNotResponding ;
 ;;
 
 (* url_of_uri : uri -> url *)
@@ -59,8 +130,6 @@ let name_and_ext_of_uri uri =
   Str.replace_first (Str.regexp ".*/") "" str
 ;;
 
-let raw_get = ClientHTTP.get_and_save
-
 (* get_file : uri -> filename *)
 let get_file uri =
  let dir = filedir_of_uri uri in
@@ -68,10 +137,10 @@ let get_file uri =
    if not (Sys.file_exists fn) then
     begin
      let url = url_of_uri uri in
-      raw_get
-       (Configuration.getter_url ^ "getxml?uri=" ^
-        UriManager.string_of_uri uri ^ "&format=normal&patch_dtd=no"
-       ) fn
+      (*CSC: use -q for quiet mode *)
+      if Sys.command ("helm_wget " ^ dir ^ " \"" ^ url ^"\"") <> 0
+      then
+       raise (ErrorGetting url) ;
     end ;
    fn
 ;;