/*

 * 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

 *

 * 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);

    }

*/

}