1/* 2 * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24package org.openjdk.tests.separate; 25 26import java.io.*; 27 28public class AttributeInjector implements ClassFilePreprocessor { 29 30 private String attributeName; 31 private byte[] attributeData; 32 33 public AttributeInjector(String attributeName, byte[] attributeData) { 34 this.attributeName = attributeName; 35 this.attributeData = attributeData; 36 } 37 38 public byte[] preprocess(String name, byte[] cf) { 39 ClassFile classfile = new ClassFile(cf); 40 41 short cpIndex = (short)classfile.constant_pool.size(); 42 43 ClassFile.CpUtf8 entry = new ClassFile.CpUtf8(); 44 entry.bytes = new byte[attributeName.length()]; 45 for (int i = 0; i < attributeName.length(); ++i) { 46 entry.bytes[i] = (byte)attributeName.charAt(i); 47 } 48 49 classfile.constant_pool.add(entry); 50 51 ClassFile.Attribute attr = new ClassFile.Attribute(); 52 attr.attribute_name_index = cpIndex; 53 attr.info = attributeData; 54 55 classfile.attributes.add(attr); 56 return classfile.toByteArray(); 57 } 58 59/* 60 public static void main(String argv[]) throws Exception { 61 File input = new File(argv[0]); 62 byte[] buffer = new byte[(int)input.length()]; 63 new FileInputStream(input).read(buffer); 64 65 ClassFilePreprocessor cfp = 66 new AttributeInjector("RequiresBridges", new byte[0]); 67 byte[] cf = cfp.preprocess(argv[0], buffer); 68 new FileOutputStream(argv[0] + ".mod").write(cf); 69 } 70*/ 71} 72