3 files changed, 42 insertions, 6 deletions
diff --git a/src/java/com/jogamp/common/jvm/JNILibLoaderBase.java b/src/java/com/jogamp/common/jvm/JNILibLoaderBase.java
index caa8702..022ec0e 100644
--- a/src/java/com/jogamp/common/jvm/JNILibLoaderBase.java
+++ b/src/java/com/jogamp/common/jvm/JNILibLoaderBase.java
@@ -156,9 +156,13 @@ public class JNILibLoaderBase {
     if(TempJarCache.isInitialized()) {        
         final String nativeJarName = nativeJarBasename+"-natives-"+PlatformPropsImpl.os_and_arch+".jar";
         msg.append(nativeJarName);
-        final URI jarUriRoot = IOUtil.getDirname( JarUtil.getJarSubURI( classJarURI ) );
-        msg.append(" + ").append(jarUriRoot);
-        final URI nativeJarURI = JarUtil.getJarFileURI(jarUriRoot, nativeJarName);
+        final URI jarSubURI = JarUtil.getJarSubURI( classJarURI );
+        if(null == jarSubURI) {
+            throw new IllegalArgumentException("JarSubURI is null of: "+classJarURI);            
+        }
+        final String jarUriRoot_s = IOUtil.getURIDirname( jarSubURI.toString() );
+        msg.append(" + ").append(jarUriRoot_s);
+        final URI nativeJarURI = JarUtil.getJarFileURI(jarUriRoot_s+nativeJarName);
         msg.append(" -> ").append(nativeJarURI);
         if(DEBUG) {
             System.err.println(msg.toString());
diff --git a/src/java/com/jogamp/common/util/IOUtil.java b/src/java/com/jogamp/common/util/IOUtil.java
index 17bf136..6b9eef8 100644
--- a/src/java/com/jogamp/common/util/IOUtil.java
+++ b/src/java/com/jogamp/common/util/IOUtil.java
@@ -444,7 +444,7 @@ public class IOUtil {
      * @throws IllegalArgumentException if the URI doesn't match the expected formatting, or is null
      * @throws URISyntaxException 
      */
-    public static URI getDirname(URI uri) throws IllegalArgumentException, URISyntaxException {
+    public static URI getURIDirname(URI uri) throws IllegalArgumentException, URISyntaxException {
         if(null == uri) {
             throw new IllegalArgumentException("URI is null");            
         }
@@ -452,6 +452,25 @@ public class IOUtil {
         if( DEBUG ) {
             System.out.println("getURIDirname "+uri+", extForm: "+uriS);
         }
+        return new URI( getURIDirname(uriS) );
+    }
+    
+    /**
+     * The URI's <code><i>protocol</i>:/some/path/gluegen-rt.jar</code>
+     * parent dirname URI <code><i>protocol</i>:/some/path/</code> will be returned.
+     * <p>
+     * <i>protocol</i> may be "file", "http", etc..
+     * </p>
+     * 
+     * @param uri "<i>protocol</i>:/some/path/gluegen-rt.jar"
+     * @return "<i>protocol</i>:/some/path/"
+     * @throws IllegalArgumentException if the URI doesn't match the expected formatting, or is null
+     * @throws URISyntaxException 
+     */
+    public static String getURIDirname(String uriS) throws IllegalArgumentException, URISyntaxException {
+        if(null == uriS) {
+            throw new IllegalArgumentException("uriS is null");            
+        }
         // from 
         //   file:/some/path/gluegen-rt.jar  _or_ rsrc:gluegen-rt.jar
         // to
@@ -461,7 +480,7 @@ public class IOUtil {
             // no abs-path, check for protocol terminator ':'
             idx = uriS.lastIndexOf(':');
             if(0 > idx) {
-                throw new IllegalArgumentException("URI does not contain protocol terminator ':', in <"+uri+">");
+                throw new IllegalArgumentException("URI does not contain protocol terminator ':', in <"+uriS+">");
             }
         }
         uriS = uriS.substring(0, idx+1); // exclude jar name, include terminal '/' or ':'        
@@ -469,7 +488,7 @@ public class IOUtil {
         if( DEBUG ) {
             System.out.println("getJarURIDirname res: "+uriS);
         }        
-        return new URI(uriS);
+        return uriS;
     }
     
     /** 
diff --git a/src/java/com/jogamp/common/util/JarUtil.java b/src/java/com/jogamp/common/util/JarUtil.java
index 145368f..41d68d4 100644
--- a/src/java/com/jogamp/common/util/JarUtil.java
+++ b/src/java/com/jogamp/common/util/JarUtil.java
@@ -393,6 +393,19 @@ public class JarUtil {
     }
     
     /**
+     * @param jarSubUriS file:/some/path/gluegen-rt.jar
+     * @return jar:file:/some/path/gluegen-rt.jar!/
+     * @throws IllegalArgumentException null arguments
+     * @throws URISyntaxException 
+     */
+    public static URI getJarFileURI(String jarSubUriS) throws IllegalArgumentException, URISyntaxException {
+        if(null == jarSubUriS) {
+            throw new IllegalArgumentException("jarSubURIS is null");
+        }
+        return new URI(IOUtil.JAR_SCHEME, jarSubUriS+"!/", null);
+    }
+    
+    /**
      * @param jarFileURI jar:file:/some/path/gluegen-rt.jar!/
      * @param jarEntry com/jogamp/common/GlueGenVersion.class
      * @return jar:file:/some/path/gluegen-rt.jar!/com/jogamp/common/GlueGenVersion.class