]> matita.cs.unibo.it Git - helm.git/blobdiff - helm/searchEngine/searchEngine.ml
1. param.name=value parameters added to the getpage method
[helm.git] / helm / searchEngine / searchEngine.ml
index 999d858aaedede548ab5fe18917146590f2ea541..77280d77a32aa63f3df6973a95f71fbc017007c8 100644 (file)
 
 let debug = true;;
 let debug_print s = if debug then prerr_endline s;;
+Http_common.debug := true;;
 (* Http_common.debug := true;; *)
 
+  (** accepted HTTP servers for ask_uwobo method forwarding *)
+let valid_servers = [ "mowgli.cs.unibo.it:58080" ; "localhost:58080" ] ;;
+
 open Printf;;
 
 let postgresConnectionString =
@@ -51,12 +55,26 @@ let final_results_TPL = pages_dir ^ "/templateambigpdq3.html";;
 
 exception Chat_unfinished
 
-  (** pretty print a MathQL query result to a string *)
-let text_of_result result sep =
- let res_string = ref "" in
-  let app = function s -> res_string := !res_string ^ s in
-   MQueryUtil.text_of_result app result sep ;
-   !res_string
+  (** pretty print a MathQL query result to an HELM theory file *)
+let theory_of_result result =
+ let results_no = List.length result in
+  if results_no > 0 then
+   let mode = if results_no > 10 then "linkonly" else "typeonly" in
+   let results =
+    let idx = ref (results_no + 1) in
+     List.fold_right
+      (fun (uri,attrs) i ->
+        decr idx ;
+        "<tr><td valign=\"top\">" ^ string_of_int !idx ^ ".</td><td><ht:OBJECT uri=\"" ^ uri ^ "\" mode=\"" ^ mode ^ "\"/></td></tr>" ^  i
+      ) result ""
+   in
+    "<h1>Query Results:</h1><table xmlns:ht=\"http://www.cs.unibo.it/helm/namespaces/helm-theory\">" ^ results ^ "</table>"
+  else
+    "<h1>Query Results:</h1><p>No results found!</p>"
+;;
+
+let pp_result result =
+ "<html xmlns:ht=\"http://www.cs.unibo.it/helm/namespaces/helm-theory\">\n<head><title>Query Results</title><style> A { text-decoration: none } </style></head>\n<body>" ^ theory_of_result result ^ "</body></html>"
 ;;
 
   (** chain application of Pcre substitutions *)
@@ -80,11 +98,13 @@ let fold_file f init fname =
 let iter_file f = fold_file (fun _ line -> f line) ()
 
 let (title_tag_RE, choices_tag_RE, msg_tag_RE, id_to_uris_RE, id_RE,
-    interpretations_RE, interpretations_labels_RE, results_RE, new_aliases_RE) =
+    interpretations_RE, interpretations_labels_RE, results_RE, new_aliases_RE)
+  =
   (Pcre.regexp "@TITLE@", Pcre.regexp "@CHOICES@", Pcre.regexp "@MSG@",
   Pcre.regexp "@ID_TO_URIS@", Pcre.regexp "@ID@",
   Pcre.regexp "@INTERPRETATIONS@", Pcre.regexp "@INTERPRETATIONS_LABELS@",
   Pcre.regexp "@RESULTS@", Pcre.regexp "@NEW_ALIASES@")
+let server_and_port_url_RE = Pcre.regexp "^http://([^/]+)/.*$"
 
 let port =
   try
@@ -95,11 +115,6 @@ let port =
       prerr_endline "Warning: invalid port, reverting to default";
       default_port
 in
-let pp_result result =
- let res_string = text_of_result result "\n" in
-  (sprintf "<html>\n<head>\n</head>\n<body>\n<pre>%s</pre>\n</body>\n</html>"
-    res_string)
-in
 let pp_error = sprintf "<html><body><h1>Error: %s</h1></body></html>" in
 let bad_request body outchan =
   Http_daemon.respond_error ~status:(`Client_error `Bad_request) ~body outchan
@@ -123,11 +138,8 @@ let callback (req: Http_types.request) outchan =
         let lexbuf = Lexing.from_string query_string in
         let query = MQueryUtil.query_of_text lexbuf in
         let result = MQueryGenerator.execute_query query in
-        let result_string = text_of_result result "\n" in
-        Http_daemon.respond
-          ~body:
-            (sprintf "<html><body><pre>%s</pre></body></html>" result_string)
-          ~headers:[contype] outchan
+        let result_string = pp_result result in
+        Http_daemon.respond ~body:result_string ~headers:[contype] outchan
     | "/locate" ->
         let id = req#param "id" in
         let result = MQueryGenerator.locate id in
@@ -137,14 +149,51 @@ let callback (req: Http_types.request) outchan =
         (let is_permitted _ = true in
         let remove_fragment uri = Pcre.replace ~pat:"#.*" uri in
         let page = remove_fragment (req#param "url") in
-        match page with
+        let preprocess =
+          (try
+            bool_of_string (req#param "preprocess")
+          with Invalid_argument _ | Http_types.Param_not_found _ -> false)
+        in
+        (match page with
         | page when is_permitted page ->
             let fname = sprintf "%s/%s" pages_dir (remove_fragment page) in
-            debug_print (sprintf "Returning file: %s" fname);
-            Http_daemon.send_basic_headers ~code:200 outchan;
-            Http_daemon.send_CRLF outchan;
-            Http_daemon.send_file ~name:fname outchan
-        | page -> Http_daemon.respond_forbidden ~url:page outchan)
+            if preprocess then begin
+              Http_daemon.send_basic_headers ~code:200 outchan;
+              Http_daemon.send_CRLF outchan;
+              iter_file
+                (fun line ->
+                  output_string outchan
+                    ((apply_substs
+                       (List.map
+                         (function (key,value) ->
+                           let key' =
+                            (Pcre.extract ~pat:"param\\.(.*)" key).(1)
+                           in
+                            Pcre.regexp ("@" ^ key' ^ "@"), value
+                         )
+                         (List.filter
+                           (fun (key,_) as p-> Pcre.pmatch ~pat:"^param\\." key)
+                           req#params)
+                       )
+                       line) ^
+                    "\n"))
+                fname
+            end else
+              Http_daemon.respond_file ~fname outchan
+        | page -> Http_daemon.respond_forbidden ~url:page outchan))
+    | "/ask_uwobo" ->
+      let url = req#param "url" in
+      let server_and_port =
+        (Pcre.extract ~rex:server_and_port_url_RE url).(1)
+      in
+      if List.mem server_and_port valid_servers then
+        Http_daemon.respond
+          ~body:(Http_client.Convenience.http_get url)
+          outchan
+      else
+        Http_daemon.respond
+          ~body:(pp_error ("Invalid UWOBO server: " ^ server_and_port))
+          outchan
     | "/searchPattern" ->
         let term_string = req#param "term" in
         let lexbuf = Lexing.from_string term_string in
@@ -177,6 +226,8 @@ let callback (req: Http_types.request) outchan =
               | ""::id::tail
               | id::tail when id<>"" ->
                   (fun id' ->
+prerr_endline ("#### " ^ id ^ " :=");
+List.iter (fun u -> prerr_endline ("<" ^ Netencoding.Url.decode u ^ ">")) tail;
                     if id = id' then
                       Some (List.map (fun u -> Netencoding.Url.decode u) tail)
                     else
@@ -216,6 +267,8 @@ let callback (req: Http_types.request) outchan =
                   (match selection_mode with
                   | `SINGLE -> assert false
                   | `EXTENDED ->
+                      Http_daemon.send_basic_headers ~code:200 outchan ;
+                      Http_daemon.send_CRLF outchan ;
                       iter_file
                         (fun line ->
                           let formatted_choices =
@@ -231,7 +284,7 @@ let callback (req: Http_types.request) outchan =
                                id_RE, id]
                               line
                           in
-                          output_string outchan processed_line)
+                          output_string outchan (processed_line ^ "\n"))
                         interactive_user_uri_choice_TPL;
                       raise Chat_unfinished))
 
@@ -265,6 +318,8 @@ let callback (req: Http_types.request) outchan =
                       "\"")
                     interpretations)
               in
+              Http_daemon.send_basic_headers ~code:200 outchan ;
+              Http_daemon.send_CRLF outchan ;
               iter_file
                 (fun line ->
                   let processed_line =
@@ -273,7 +328,7 @@ let callback (req: Http_types.request) outchan =
                        interpretations_labels_RE, html_interpretations_labels]
                       line
                   in
-                  output_string outchan processed_line)
+                  output_string outchan (processed_line ^ "\n"))
                 interactive_interpretation_choice_TPL;
               raise Chat_unfinished
 
@@ -292,6 +347,8 @@ let callback (req: Http_types.request) outchan =
             let must = MQueryLevels2.get_constraints term' in
             let must',only = refine_constraints must in
             let results = MQueryGenerator.searchPattern must' only in 
+            Http_daemon.send_basic_headers ~code:200 outchan ;
+            Http_daemon.send_CRLF outchan ;
             iter_file
               (fun line ->
                 let new_aliases =
@@ -314,11 +371,11 @@ let callback (req: Http_types.request) outchan =
                 in
                 let processed_line =
                   apply_substs
-                    [results_RE, text_of_result results "\n";
+                    [results_RE, theory_of_result results ;
                      new_aliases_RE, new_aliases]
                     line
                 in
-                output_string outchan processed_line)
+                output_string outchan (processed_line ^ "\n"))
               final_results_TPL
         | _ -> (* unable to instantiate some implicit variable *)
             Http_daemon.respond