aoqi@0: /*
aoqi@0:  * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.  Oracle designates this
aoqi@0:  * particular file as subject to the "Classpath" exception as provided
aoqi@0:  * by Oracle in the LICENSE file that accompanied this code.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  */
aoqi@0: 
aoqi@0: package org.openjdk.tests.separate;
aoqi@0: 
aoqi@0: import java.io.*;
aoqi@0: 
aoqi@0: public class AttributeInjector implements ClassFilePreprocessor {
aoqi@0: 
aoqi@0:     private String attributeName;
aoqi@0:     private byte[] attributeData;
aoqi@0: 
aoqi@0:     public AttributeInjector(String attributeName, byte[] attributeData) {
aoqi@0:         this.attributeName = attributeName;
aoqi@0:         this.attributeData = attributeData;
aoqi@0:     }
aoqi@0: 
aoqi@0:     public byte[] preprocess(String name, byte[] cf) {
aoqi@0:         ClassFile classfile = new ClassFile(cf);
aoqi@0: 
aoqi@0:         short cpIndex = (short)classfile.constant_pool.size();
aoqi@0: 
aoqi@0:         ClassFile.CpUtf8 entry = new ClassFile.CpUtf8();
aoqi@0:         entry.bytes = new byte[attributeName.length()];
aoqi@0:         for (int i = 0; i < attributeName.length(); ++i) {
aoqi@0:             entry.bytes[i] = (byte)attributeName.charAt(i);
aoqi@0:         }
aoqi@0: 
aoqi@0:         classfile.constant_pool.add(entry);
aoqi@0: 
aoqi@0:         ClassFile.Attribute attr = new ClassFile.Attribute();
aoqi@0:         attr.attribute_name_index = cpIndex;
aoqi@0:         attr.info = attributeData;
aoqi@0: 
aoqi@0:         classfile.attributes.add(attr);
aoqi@0:         return classfile.toByteArray();
aoqi@0:     }
aoqi@0: 
aoqi@0: /*
aoqi@0:     public static void main(String argv[]) throws Exception {
aoqi@0:         File input = new File(argv[0]);
aoqi@0:         byte[] buffer = new byte[(int)input.length()];
aoqi@0:         new FileInputStream(input).read(buffer);
aoqi@0: 
aoqi@0:         ClassFilePreprocessor cfp =
aoqi@0:             new AttributeInjector("RequiresBridges", new byte[0]);
aoqi@0:         byte[] cf = cfp.preprocess(argv[0], buffer);
aoqi@0:         new FileOutputStream(argv[0] + ".mod").write(cf);
aoqi@0:     }
aoqi@0: */
aoqi@0: }