/**
* Copyright 2007 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.tonicsystems.jarjar.util;
import java.io.*;
import org.objectweb.asm.ClassReader;
import org.objectweb.asm.ClassVisitor;
import org.objectweb.asm.ClassWriter;
abstract public class JarTransformer implements JarProcessor
{
public boolean process(EntryStruct struct) throws IOException {
if (struct.name.endsWith(".class")) {
ClassReader reader;
try {
reader = new ClassReader(struct.data);
} catch (Exception e) {
return true; // TODO?
}
GetNameClassWriter w = new GetNameClassWriter(ClassWriter.COMPUTE_MAXS);
reader.accept(transform(w), ClassReader.EXPAND_FRAMES);
struct.data = w.toByteArray();
struct.name = pathFromName(w.getClassName());
}
return true;
}
abstract protected ClassVisitor transform(ClassVisitor v);
private static String pathFromName(String className) {
return className.replace('.', '/') + ".class";
}
}