Added containsResource() and a sensible toString().

git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@627 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/resource/ResourceBundle.java

@@ -1,5 +1,5 @@
 //
-// $Id: ResourceBundle.java,v 1.1 2001/11/20 00:21:41 mdb Exp $
+// $Id: ResourceBundle.java,v 1.2 2001/11/20 03:46:28 mdb Exp $
 
 package com.threerings.resource;
 
@@ -55,6 +55,25 @@ public class ResourceBundle
         return stream;
     }
 
+    /**
+     * Returns true if this resource bundle contains the resource with the
+     * specified path. This avoids actually loading the resource, in the
+     * event that the caller only cares to know that the resource exists.
+     */
+    public boolean containsResource (String path)
+    {
+        return (_source.getJarEntry(path) != null);
+    }
+
+    /**
+     * Returns a string representation of this resource bundle.
+     */
+    public String toString ()
+    {
+        return "[path=" + _source.getName() +
+            ", entries=" + _source.size() + "]";
+    }
+
     /** The jar file from which we load resources. */
     protected JarFile _source;
 }