jaroslav@298: /**
jaroslav@298:  * Back 2 Browser Bytecode Translator
jaroslav@298:  * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
jaroslav@298:  *
jaroslav@298:  * This program is free software: you can redistribute it and/or modify
jaroslav@298:  * it under the terms of the GNU General Public License as published by
jaroslav@298:  * the Free Software Foundation, version 2 of the License.
jaroslav@298:  *
jaroslav@298:  * This program is distributed in the hope that it will be useful,
jaroslav@298:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
jaroslav@298:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
jaroslav@298:  * GNU General Public License for more details.
jaroslav@298:  *
jaroslav@298:  * You should have received a copy of the GNU General Public License
jaroslav@298:  * along with this program. Look for COPYING file in the top folder.
jaroslav@298:  * If not, see http://opensource.org/licenses/GPL-2.0.
jaroslav@298:  */
jaroslav@298: package org.apidesign.vm4brwsr;
jaroslav@298: 
jaroslav@298: import java.io.IOException;
jaroslav@298: import java.io.InputStream;
jaroslav@298: import java.util.Set;
jaroslav@298: import java.util.TreeSet;
jaroslav@298: 
jaroslav@298: /**
jaroslav@298:  *
jaroslav@298:  * @author Jaroslav Tulach <jtulach@netbeans.org>
jaroslav@298:  */
jaroslav@298: public final class BytesLoader {
jaroslav@298:     private static Set<String> requested = new TreeSet<String>();
jaroslav@298: 
jaroslav@298:     public byte[] get(String name) throws IOException {
jaroslav@298:         if (!requested.add(name)) {
jaroslav@298:             throw new IllegalStateException("Requested for second time: " + name);
jaroslav@298:         }
jaroslav@298:         InputStream is = BytesLoader.class.getClassLoader().getResourceAsStream(name);
jaroslav@298:         if (is == null) {
jaroslav@298:             throw new IOException("Can't find " + name);
jaroslav@298:         }
jaroslav@298:         byte[] arr = new byte[is.available()];
jaroslav@298:         int len = is.read(arr);
jaroslav@298:         if (len != arr.length) {
jaroslav@298:             throw new IOException("Read only " + len + " wanting " + arr.length);
jaroslav@298:         }
jaroslav@298:         /*
jaroslav@298:         System.err.print("loader['" + name + "'] = [");
jaroslav@298:         for (int i = 0; i < arr.length; i++) {
jaroslav@298:         if (i > 0) {
jaroslav@298:         System.err.print(", ");
jaroslav@298:         }
jaroslav@298:         System.err.print(arr[i]);
jaroslav@298:         }
jaroslav@298:         System.err.println("]");
jaroslav@298:          */
jaroslav@298:         return arr;
jaroslav@298:     }
jaroslav@298:     
jaroslav@298: }