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/*
* Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package org.openjdk.tests.separate;
import java.io.*;
public class AttributeInjector implements ClassFilePreprocessor {
private String attributeName;
private byte[] attributeData;
public AttributeInjector(String attributeName, byte[] attributeData) {
this.attributeName = attributeName;
this.attributeData = attributeData;
}
public byte[] preprocess(String name, byte[] cf) {
ClassFile classfile = new ClassFile(cf);
short cpIndex = (short)classfile.constant_pool.size();
ClassFile.CpUtf8 entry = new ClassFile.CpUtf8();
entry.bytes = new byte[attributeName.length()];
for (int i = 0; i < attributeName.length(); ++i) {
entry.bytes[i] = (byte)attributeName.charAt(i);
}
classfile.constant_pool.add(entry);
ClassFile.Attribute attr = new ClassFile.Attribute();
attr.attribute_name_index = cpIndex;
attr.info = attributeData;
classfile.attributes.add(attr);
return classfile.toByteArray();
}
/*
public static void main(String argv[]) throws Exception {
File input = new File(argv[0]);
byte[] buffer = new byte[(int)input.length()];
new FileInputStream(input).read(buffer);
ClassFilePreprocessor cfp =
new AttributeInjector("RequiresBridges", new byte[0]);
byte[] cf = cfp.preprocess(argv[0], buffer);
new FileOutputStream(argv[0] + ".mod").write(cf);
}
*/
}
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