- added ?callback= parameter for JsonP support

- this is needed for json ajax cross domain calls
- see: http://bob.pythonmac.org/archives/2005/12/05/remote-json-jsonp/

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@5674 6c8d7289-2bf4-0310-a012-ef5d649a1542

htroot/yacysearch.java

@@ -126,7 +126,17 @@ public static serverObjects respond(final httpRequestHeader header, final server
 
             return prop;
         }
-
+
+        // check for JSONP
+        if (post.containsKey("callback")) {
+        	final String jsonp = post.get("callback")+ "([";
+        	prop.put("jsonp-start", jsonp);
+        	prop.put("jsonp-end", "])");
+        } else {
+        	prop.put("jsonp-start", "");
+        	prop.put("jsonp-end", "");
+        }
+
         // collect search attributes
         boolean newsearch = post.hasValue("query") && post.hasValue("former") && !post.get("query","").equalsIgnoreCase(post.get("former","")); //new search term
 

htroot/yacysearch.json

@@ -1,3 +1,4 @@
+#[jsonp-start]#
 {
   "xmlns$yacy": "http://www.yacy.net/",
   "xmlns$os":   "http://a9.com/-/spec/opensearch/1.1/",
@@ -22,4 +23,5 @@
     ],
 <!--#include virtual="yacysearchtrailer.json?eventID=#[eventID]#" -->
   }]
-}
+}
+#[jsonp-end]#