01: /***
02: * ASM: a very small and fast Java bytecode manipulation framework
03: * Copyright (c) 2000-2005 INRIA, France Telecom
04: * All rights reserved.
05: *
06: * Redistribution and use in source and binary forms, with or without
07: * modification, are permitted provided that the following conditions
08: * are met:
09: * 1. Redistributions of source code must retain the above copyright
10: * notice, this list of conditions and the following disclaimer.
11: * 2. Redistributions in binary form must reproduce the above copyright
12: * notice, this list of conditions and the following disclaimer in the
13: * documentation and/or other materials provided with the distribution.
14: * 3. Neither the name of the copyright holders nor the names of its
15: * contributors may be used to endorse or promote products derived from
16: * this software without specific prior written permission.
17: *
18: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
19: * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21: * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
22: * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
28: * THE POSSIBILITY OF SUCH DAMAGE.
29: */package org.objectweb.asm.optimizer;
30:
31: import java.io.File;
32: import java.io.FileOutputStream;
33: import java.io.IOException;
34: import java.io.InputStream;
35: import java.util.Enumeration;
36: import java.util.zip.ZipEntry;
37: import java.util.zip.ZipFile;
38: import java.util.zip.ZipOutputStream;
39:
40: /**
41: * A Jar file optimizer.
42: *
43: * @author Eric Bruneton
44: */
45: public class JarOptimizer {
46:
47: public static void main(final String[] args) throws IOException {
48: File f = new File(args[0]);
49: optimize(f);
50: }
51:
52: static void optimize(final File f) throws IOException {
53: if (f.isDirectory()) {
54: File[] files = f.listFiles();
55: for (int i = 0; i < files.length; ++i) {
56: optimize(files[i]);
57: }
58: } else if (f.getName().endsWith(".jar")) {
59: File g = new File(f.getParentFile(), f.getName() + ".new");
60: ZipFile zf = new ZipFile(f);
61: ZipOutputStream out = new ZipOutputStream(
62: new FileOutputStream(g));
63: Enumeration e = zf.entries();
64: byte[] buf = new byte[10000];
65: while (e.hasMoreElements()) {
66: ZipEntry ze = (ZipEntry) e.nextElement();
67: if (ze.isDirectory()) {
68: continue;
69: }
70: out.putNextEntry(ze);
71: InputStream is = zf.getInputStream(ze);
72: int n;
73: do {
74: n = is.read(buf, 0, buf.length);
75: if (n != -1) {
76: out.write(buf, 0, n);
77: }
78: } while (n != -1);
79: out.closeEntry();
80: }
81: out.close();
82: zf.close();
83: f.delete();
84: g.renameTo(f);
85: }
86: }
87: }
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