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1 package com.opensymphony.webwork.portlet.util;
2
3
4 import com.opensymphony.util.TextUtils;
5
6 import java.io.File  ;
7 import java.util.Enumeration ;
8 import java.util.zip.ZipEntry ;
9 import java.util.zip.ZipFile ;
10
11 public class FileUnzipper extends AbstractUnzipper {
12 private File zipFile;
13
14 public FileUnzipper(File zipFile, File destDir) {
15 this.zipFile = zipFile;
16 super.destDir = destDir;
17 }
18
19 public void unzip() throws Exception {
20 if (zipFile == null || !zipFile.isFile())
21 return;
22 ZipFile zf = new ZipFile (zipFile);
23 ZipEntry zipEntry;
24 for (Enumeration zipEntries = zf.entries(); zipEntries.hasMoreElements(); saveEntry(
25 zf.getInputStream(zipEntry), zipEntry))
26 zipEntry = (ZipEntry ) zipEntries.nextElement();
27
28 zf.close();
29 }
30
31 public File unzipFileInArchive(String fileName) throws Exception {
32 File result = null;
33 if (zipFile == null || !zipFile.isFile() || !TextUtils.stringSet(fileName))
34 return result;
35 boolean fileFound = false;
36 ZipFile zf = new ZipFile (zipFile);
37 Enumeration zipEntries = zf.entries();
38 do {
39 if (!zipEntries.hasMoreElements())
40 break;
41 ZipEntry entry = (ZipEntry ) zipEntries.nextElement();
42 String entryName = entry.getName();
43 if (TextUtils.stringSet(entryName) && entryName.startsWith("/"))
44 entryName = entryName.substring(1);
45 if (fileName.equals(entryName)) {
46 fileFound = true;
47 result = saveEntry(zf.getInputStream(entry), entry);
48 }
49 } while (true);
50 if (!fileFound)
51 AbstractUnzipper.log.error("The file: " + fileName + " could not be found in the archive: "
52 + zipFile.getAbsolutePath());
53 zf.close();
54 return result;
55 }
56
57 } |
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