1/*
2 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24import java.io.InputStream;
25import java.nio.file.Files;
26import java.nio.file.Path;
27import java.nio.file.Paths;
28import java.nio.file.StandardCopyOption;
29
30/**
31 * Dump a class file for a class on the class path in the current directory
32 */
33public class ClassFileInstaller {
34    /**
35     * @param args The names of the classes to dump
36     * @throws Exception
37     */
38    public static void main(String... args) throws Exception {
39        for (String arg : args) {
40            ClassLoader cl = ClassFileInstaller.class.getClassLoader();
41
42            // Convert dotted class name to a path to a class file
43            String pathName = arg.replace('.', '/').concat(".class");
44            InputStream is = cl.getResourceAsStream(pathName);
45
46            // Create the class file's package directory
47            Path p = Paths.get(pathName);
48            Path parent = p.getParent();
49            if (parent != null) {
50                Files.createDirectories(parent);
51            }
52            // Create the class file
53            Files.copy(is, p, StandardCopyOption.REPLACE_EXISTING);
54        }
55    }
56}
57