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1
9 package org.snipsnap.util;
10
11 import org.radeox.util.logging.Logger;
12
13 import java.io.*;
14 import java.util.Enumeration  ;
15 import java.util.List ;
16 import java.util.jar.JarEntry ;
17 import java.util.jar.JarFile ;
18 import java.util.zip.Adler32 ;
19 import java.util.zip.CheckedInputStream ;
20
21 public class JarUtil {
22
23 public static Checksum extract(JarFile file, File target) throws IOException {
24 return extract(file, target, null, null);
25 }
26
27
34 public static Checksum extract(JarFile file, File target, List install, List unpack) throws IOException {
35 if (!target.exists()) {
36 target.mkdirs();
37 }
38
39 Checksum checksum = new Checksum(target.getAbsolutePath());
40 if (target.isDirectory()) {
41 byte buf[] = new byte[8192];
42 Enumeration entries = file.entries();
43 while (entries.hasMoreElements()) {
44 JarEntry entry = (JarEntry ) entries.nextElement();
45 File f = new File (target, entry.getName());
46 if (entry.isDirectory()) {
47 f.mkdir();
48 } else {
49 boolean extract = true, rename = false;
50 String name = entry.toString();
51 if (install != null && !install.contains(name)) {
52 extract = false;
53 }
54 if (unpack != null && unpack.contains(name)) {
55 extract = true;
56 rename = true;
57 }
58
59 if (extract) {
60 System.out.println("Extracting " + f.getAbsolutePath());
61 CheckedInputStream fin = new CheckedInputStream (new BufferedInputStream(file.getInputStream(entry)),
62 new Adler32 ());
63 if (rename) {
64 f = new File (target, entry.getName() + ".new");
65 System.out.println("Renaming to " + f.getAbsolutePath());
66 }
67 BufferedOutputStream fout = new BufferedOutputStream(new FileOutputStream(f));
68 int n = 0;
69 while ((n = fin.read(buf)) >= 0) {
70 fout.write(buf, 0, n);
71 }
72 checksum.add(entry.toString(), new Long (fin.getChecksum().getValue()));
73 fin.close();
74 fout.close();
75 }
76 }
77 }
78 }
79
80 return checksum;
81 }
82
83 public static Checksum checksumJar(JarFile file) throws IOException {
84 Checksum checksum = new Checksum(file.toString());
85 Enumeration entries = file.entries();
86 while (entries.hasMoreElements()) {
87 JarEntry entry = (JarEntry ) entries.nextElement();
88 if (!entry.isDirectory()) {
89 CheckedInputStream fin = new CheckedInputStream (new BufferedInputStream(file.getInputStream(entry)),
90 new Adler32 ());
91 byte buffer[] = new byte[8192];
92 while ((fin.read(buffer)) != -1) {
93
94 }
95 Long checkSum = new Long (fin.getChecksum().getValue());
96 checksum.add(entry.toString(), checkSum);
97 fin.close();
98 }
99 }
100 return checksum;
101 }
102
103 public static void main(String args[]) {
104 try {
105 JarFile file = new JarFile (args[0]);
106 Checksum checksum = checksumJar(file);
107 checksum.store(new File ("./CHECKSUMS"));
108 } catch (IOException e) {
109 Logger.warn("JarUtil: usage: JarUtil jarfile", e);
110 }
111 }
112 }
113 |
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