/* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You 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. * */ import org.apache.bcel.Repository; import org.apache.bcel.classfile.ClassParser; import org.apache.bcel.classfile.Field; import org.apache.bcel.classfile.JavaClass; import org.apache.bcel.classfile.Method; import org.apache.bcel.generic.ClassGen; import org.apache.bcel.generic.FieldGen; import org.apache.bcel.generic.MethodGen; /** * Test BCEL if an input file is identical to the outfile generated * with BCEL. Of course there may some small differences, e.g., because * BCEL generates local variable tables by default. * * Try to: *
* % java id* % java listclass -code > foo * % java listclass -code .clazz > bar * % diff foo bar | more * * * @version $Id$ */ public class id { public static void main(String[] argv) throws Exception { JavaClass clazz; if ((clazz = Repository.lookupClass(argv[0])) == null) { clazz = new ClassParser(argv[0]).parse(); // May throw IOException } ClassGen cg = new ClassGen(clazz); for (Method method : clazz.getMethods()) { MethodGen mg = new MethodGen(method, cg.getClassName(), cg.getConstantPool()); cg.replaceMethod(method, mg.getMethod()); } for (Field field : clazz.getFields()) { FieldGen fg = new FieldGen(field, cg.getConstantPool()); cg.replaceField(field, fg.getField()); } cg.getJavaClass().dump(clazz.getClassName() + ".clazz"); } }