| /* |
| * 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. |
| */ |
| /* |
| * Contributor(s): Thomas Ball |
| */ |
| |
| import org.netbeans.modules.classfile.*; |
| import java.io.*; |
| import java.util.*; |
| |
| /** |
| * PrintClass: write a class as a println statement. |
| * |
| * @author Thomas Ball |
| */ |
| public class PrintClass { |
| String thisClass; |
| |
| PrintClass(String spec) { |
| thisClass = spec; |
| } |
| |
| void print(PrintStream out) throws IOException { |
| ClassName cn = ClassName.getClassName(thisClass.replace('.', '/')); |
| InputStream is = findClassStream(cn.getType()); |
| if (is == null) { |
| System.err.println("couldn't find class: " + |
| cn.getExternalName()); |
| return; |
| } |
| ClassFile cfile = new ClassFile(is); |
| out.println(cfile); |
| } |
| |
| private InputStream findClassStream(String className) { |
| InputStream is = |
| ClassLoader.getSystemClassLoader().getResourceAsStream(className + ".class"); |
| return is; |
| } |
| |
| /** |
| * An error routine which displays the command line usage |
| * before exiting. |
| */ |
| public static void usage() { |
| System.err.println( |
| "usage: java PrintClass <class> [ <class> ...]"); |
| System.exit(1); |
| } |
| |
| public static void main(String[] args) { |
| if (args.length == 0) |
| usage(); |
| |
| for (int i = 0; i < args.length; i++) { |
| if (args[i].charAt(0) == '-') |
| usage(); |
| else { |
| try { |
| PrintClass pc = new PrintClass(args[i]); |
| pc.print(System.out); |
| } catch (IOException e) { |
| System.err.println("error accessing \"" + args[i] + |
| "\": " + e.toString()); |
| } |
| } |
| } |
| } |
| } |