BundleOutputStream


1   /**
2    * BundleOutputStream.java is a part of the SOFA project.
3    * This file was created by pepan on 21.3.2003.
4    */
5   package SOFA.SOFAnode.TR.Impl;
6   
7   import java.io.File  ;
8   import java.io.FileInputStream  ;
9   import java.io.IOException  ;
10  import java.io.OutputStream  ;
11  import java.util.Enumeration  ;
12  import java.util.Hashtable  ;
13  import java.util.jar.JarEntry  ;
14  import java.util.jar.JarOutputStream  ;
15  
16  import SOFA.Util.Tools;
17  
18  /**
19   * A stream used for saving the contents of a bundle. It saves the bundle to a zipped
20   * stream with a manifest file (JAR file).
21   * @author Petr Panuska
22   */
23  class BundleOutputStream extends JarOutputStream   {
24  
25    /**
26     * Creates this stream.
27     * @param out the output stream lying under this one.
28     * @throws IOException when some IO operation fails.
29     */
30    public BundleOutputStream (OutputStream   out) throws IOException   {
31      super(out);
32    }
33  
34    /**
35     * Puts the next bundle entry (all files of a component) to this stream.
36     * @param be the bundle entry being written to this stream.
37     * @throws IOException when some IO operation fails.
38     */
39    public void putNextBundleEntry (BundleEntry be) throws IOException   {
40      Hashtable   files = be.getFiles().getFiles();
41  
42      Enumeration   paths = files.keys();
43      while (paths.hasMoreElements()) {
44        String   path = (String  ) paths.nextElement();   // the path in the jar file
45        File   file = (File  ) files.get(path);            // the file in SOFAnode's file system
46        long fileLength = file.length();
47  
48        path = path.replace('\\', '/');   // if there were some backslashes, in the JarEntry it must be a slash
49        JarEntry   jarEntry = new JarEntry  (be.getName() + path); //location serves here as a prefix of path in a jar file!!!
50        jarEntry.setSize(fileLength);
51        jarEntry.setTime(file.lastModified());   // keep original time of creation
52        putNextEntry(jarEntry);
53  
54        FileInputStream   fileStream = new FileInputStream  (file);
55  
56        Tools.copyStream(fileStream, this);
57  
58        fileStream.close();
59        closeEntry();
60      }
61    }
62  
63  }
64
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