[FIXED HUDSON-2763] Add health report in build history widget on project page.

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@13802 71c3de6d-444a-0410-be80-ed276b4c234a

core/src/main/java/hudson/Functions.java

@@ -35,6 +35,9 @@ import hudson.util.Area;
 import hudson.util.Iterators;
 import org.acegisecurity.providers.anonymous.AnonymousAuthenticationToken;
 import org.apache.commons.jelly.JellyContext;
+import org.apache.commons.jelly.JellyTagException;
+import org.apache.commons.jelly.Script;
+import org.apache.commons.jelly.XMLOutput;
 import org.apache.commons.jexl.parser.ASTSizeFunction;
 import org.apache.commons.jexl.util.Introspector;
 import org.kohsuke.stapler.Ancestor;
@@ -871,6 +874,17 @@ public class Functions {
         return context;
     }
 
+    /**
+     * Evaluate a Jelly script and return output as a String.
+     *
+     * @since 1.267
+     */
+    public static String runScript(Script script) throws JellyTagException {
+        StringWriter out = new StringWriter();
+        script.run(getCurrentJellyContext(), XMLOutput.createXMLOutput(out));
+        return out.toString();
+    }
+
     /**
      * Returns a sub-list if the given list is bigger than the specified 'maxSize'
      */