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1
20
21 package com.tonicsystems.jarjar.util;
22
23 import java.util.jar.JarEntry  ;
24 import java.util.jar.JarFile ;
25 import java.util.jar.JarOutputStream ;
26 import java.util.Enumeration ;
27 import java.util.zip.ZipOutputStream ;
28 import java.io.*;
29
30 public class StandaloneJarProcessor
31 {
32 public static void run(File from, File to, JarProcessor proc) throws IOException {
33 JarFile in = new JarFile (from);
34 JarOutputStream out = new JarOutputStream (new FileOutputStream(to));
35 byte[] buf = new byte[0x2000];
36 EntryStruct struct = new EntryStruct();
37 Enumeration e = in.entries();
38 while (e.hasMoreElements()) {
39 JarEntry entry = (JarEntry )e.nextElement();
40 struct.in = in.getInputStream(entry);
41 struct.name = entry.getName();
42 struct.time = entry.getTime();
43 struct.file = from;
44 if (proc.process(struct)) {
45 entry = new JarEntry (struct.name);
46 entry.setTime(struct.time);
47 entry.setCompressedSize(-1);
48 out.putNextEntry(entry);
49 pipe(struct.in, out, buf);
50 struct.in.close();
51 }
52 }
53 out.close();
54 out = null;
55 }
56
57 private static void pipe(InputStream is, OutputStream out, byte[] buf) throws IOException {
58 for (;;) {
59 int amt = is.read(buf);
60 if (amt < 0)
61 break;
62 out.write(buf, 0, amt);
63 }
64 }
65 }
66 |
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