*) No stacktrace anymore if invalid regex is entered for URL mask or Prefer mask, insted an error message gets displayed.

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@3529 6c8d7289-2bf4-0310-a012-ef5d649a1542

htroot/yacysearch.html

@@ -87,6 +87,8 @@ document.getElementById("Enter").value = "search again - catch up more links";
 	<p>If you think the information you searched should exist in the global index,
 	then please run your own peer and start a crawl of your wanted information to make it
 	available for everyone. Then stay online to support crawls from other peers. Thank you!</p>
+	::
+    <p>No Results. &quot;<strong>#[wrong_regex]#</strong>&quot; is no valid regular expression, please go back to the previous page and make sure to enter a valid regular expressions for URL mask and Prefer mask.</p>
     ::
 	<p><strong>#[linkcount]#</strong> results from <strong>#[orderedcount]#</strong> ordered links from <strong>#[filteredcount]#</strong> filtered links of a total number of <strong>#[totalcount]#</strong> known.</p>
 #(/num-results)#

htroot/yacysearch.java

@@ -52,6 +52,7 @@ import java.net.MalformedURLException;
 import java.net.URLEncoder;
 import java.util.HashMap;
 import java.util.Iterator;
+import java.util.regex.PatternSyntaxException;
 import java.util.TreeSet;
 
 import de.anomic.htmlFilter.htmlFilterImageEntry;
@@ -268,7 +269,15 @@ public class yacysearch {
         plasmaSearchTimingProfile localTiming = new plasmaSearchTimingProfile(4 * thisSearch.maximumTime / 10, thisSearch.wantedResults);
         plasmaSearchTimingProfile remoteTiming = new plasmaSearchTimingProfile(6 * thisSearch.maximumTime / 10, thisSearch.wantedResults);
 
-        plasmaSearchResults results = sb.searchFromLocal(thisSearch, ranking, localTiming, remoteTiming, true, (String) header.get("CLIENTIP"));
+        plasmaSearchResults results = new plasmaSearchResults();
+        String wrongregex = null;
+        try{
+            results = sb.searchFromLocal(thisSearch, ranking, localTiming, remoteTiming, true, (String) header.get("CLIENTIP"));
+        }
+        catch(PatternSyntaxException e){
+            wrongregex = e.getPattern();
+        }
+
         //prop=sb.searchFromLocal(thisSearch, ranking, localTiming, remoteTiming, true, (String) header.get("CLIENTIP"));
         prop=new serverObjects();
         //prop.put("references", 0);
@@ -395,15 +404,23 @@ public class yacysearch {
                         }
                     }
                 } else {
-                    if (totalcount == 0) {
-                        prop.put("num-results", 3); // long
-                    } else {
+                    if (wrongregex != null) {
+                        prop.put("num-results_wrong_regex", wrongregex);
                         prop.put("num-results", 4);
                     }
+                    else if (totalcount == 0) {
+                        prop.put("num-results", 3); // long
+                    }
+                    else {
+                        prop.put("num-results", 5);
+                    }
                 }
             }
 
-            if (yacyonline) {
+            if (wrongregex != null) {
+                    prop.put("type_resultbottomline", 0);
+            }
+            else if (yacyonline) {
                 if (global) {
                     prop.put("type_resultbottomline", 1);
                     prop.put("type_resultbottomline_globalresults", prop.get("num-results_globalresults", "0"));