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16 package org.outerj.daisy.blobstoreconvertor;
17
18 import java.io.File  ;
19 import java.io.FileFilter ;
20
21 public class BlobStoreConvertor {
22 private File blobDir;
23
24 private static final int DIRECTORY_DEPTH = 4;
25
26 private static final int DIRECTORY_NAME_LENGTH = 2;
27
28 private static final int KEYLENGTH = 20;
29
30 public static void main(String [] args) {
31 if (args.length == 1) {
32 try {
33 new BlobStoreConvertor(args[0]).flatToHierarchical();
34 } catch (Exception e) {
35 e.printStackTrace();
36 System.exit(1);
37 }
38 }
39 }
40
41 public BlobStoreConvertor(String blobStorePath) throws Exception {
42 blobDir = new File (blobStorePath);
43 if (!blobDir.exists() || !blobDir.isDirectory())
44 throw new Exception (blobStorePath + " does not exist or is not a directory");
45 }
46
47 public void flatToHierarchical() throws Exception {
48 File [] files = blobDir.listFiles(new FlatBlobFilter());
49 for (int i = 0; i < files.length; i++) {
50 String id = files[i].getName();
51 System.out.println("Processing " + id);
52 String subdirName = "";
53 int position = 0;
54 for (int j = 0; j < DIRECTORY_DEPTH; j++)
55 subdirName += id.substring(position, position += DIRECTORY_NAME_LENGTH) + File.separator;
56
57 File subdir = new File (blobDir, subdirName);
58 subdir.mkdirs();
59
60 File newFile = new File (subdir, id.substring(position));
61 if (!files[i].renameTo(newFile)) {
62 throw new Exception ("Could not rename file " + files[i].getName());
63 }
64 }
65 System.out.println("Finished successfully.");
66 }
67
68 private class FlatBlobFilter implements FileFilter {
69 public boolean accept(File pathname) {
70 return pathname.isFile() && pathname.getName().length() == KEYLENGTH * 2;
71 }
72 }
73 }
74 |
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