/**

  * Back 2 Browser Bytecode Translator

  * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>

  *

  * This program is free software: you can redistribute it and/or modify

  * it under the terms of the GNU General Public License as published by

  * the Free Software Foundation, version 2 of the License.

  *

  * This program is distributed in the hope that it will be useful,

  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

  * GNU General Public License for more details.

  *

  * You should have received a copy of the GNU General Public License

  * along with this program. Look for COPYING file in the top folder.

  * If not, see http://opensource.org/licenses/GPL-2.0.

  */

 package org.apidesign.vm4brwsr;

 import java.io.IOException;

 import java.io.InputStream;

 import java.net.URL;

 import java.util.Enumeration;

 /** Implementation of Resources that delegates to some class loader.

  *

  * @author Jaroslav Tulach <jtulach@netbeans.org>

  */

 final class LdrRsrcs implements Bck2Brwsr.Resources {

     private final ClassLoader loader;

     private final boolean skipRtJar;

     LdrRsrcs(ClassLoader loader, boolean skipRtJar) {

         this.loader = loader;

         this.skipRtJar = skipRtJar;

     }

     @Override

     public InputStream get(String name) throws IOException {

         Enumeration<URL> en = loader.getResources(name);

         URL u = null;

         while (en.hasMoreElements()) {

             u = en.nextElement();

         }

         if (u == null) {

             throw new IOException("Can't find " + name);

         }

         if (skipRtJar && u.toExternalForm().contains("lib/rt.jar!")) {

             return null;

         }

         return u.openStream();

     }

 }