| /* |
| * 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.*; |
| import java.util.zip.ZipFile; |
| import java.util.zip.ZipEntry; |
| |
| /** |
| * ScanJar: load all of the classes of a specified jar file, |
| * useful for performance and regression testing. |
| * |
| * @author Thomas Ball |
| */ |
| public class ScanJar { |
| String jarName; |
| boolean includeCode; |
| boolean toString; |
| |
| public static void main(String[] args) { |
| boolean includeCode = false; |
| boolean toString = false; |
| if (args.length == 0) |
| usage(); |
| for (int i = 0; i < args.length; i++) { |
| if (args[i].equals("-includeCode")) |
| includeCode = true; |
| else if (args[i].equals("-toString")) |
| toString = true; |
| else if (args[i].charAt(0) == '-') |
| usage(); |
| else { |
| try { |
| ScanJar sj = new ScanJar(args[i], includeCode, toString); |
| System.out.print("scanning " + args[i]); |
| if (includeCode || toString) { |
| System.out.print(": "); |
| if (includeCode) |
| System.out.print("includeCode "); |
| if (toString) |
| System.out.print("toString"); |
| } |
| System.out.println(); |
| ElapsedTimer timer = new ElapsedTimer(); |
| int n = sj.scan(); |
| System.out.println("scanned " + n + " files in " + |
| timer.toString()); |
| } catch (IOException e) { |
| System.err.println("error accessing \"" + args[i] + |
| "\": " + e.toString()); |
| } |
| } |
| } |
| } |
| |
| ScanJar(String name, boolean incl, boolean tos) { |
| jarName = name; |
| includeCode = incl; |
| toString = tos; |
| } |
| |
| /** |
| * Reads class entries from the jar file into ClassFile instances. |
| * Returns the number of classes scanned. |
| */ |
| public int scan() throws IOException { |
| int n = 0; |
| ZipFile zf = new ZipFile(jarName); |
| Enumeration files = zf.entries(); |
| while (files.hasMoreElements()) { |
| ZipEntry entry = (ZipEntry)files.nextElement(); |
| String name = entry.getName(); |
| if (name.endsWith(".class")) { |
| InputStream in = zf.getInputStream(entry); |
| ClassFile cf = new ClassFile(in, includeCode); |
| if (toString) |
| try { |
| cf.toString(); // forces loading of attributes. |
| } catch (InvalidClassFileAttributeException ex) { |
| System.out.println("error accessing " + name); |
| throw ex; |
| } |
| in.close(); |
| n++; |
| } |
| } |
| zf.close(); |
| return n; |
| } |
| |
| public static void usage() { |
| System.err.println("usage: java ScanJar [-includeCode] " + |
| "[-toString] <jar file> [ <jar file> ...]"); |
| System.exit(1); |
| } |
| } |
| |