Ejemplo n.º 1
0
  public static FileDesc loadFile(Path root, Path file, int blocSize)
      throws NoSuchAlgorithmException, FileNotFoundException, IOException {
    MessageDigest md = MessageDigest.getInstance("SHA-512");
    MessageDigest fileMd = MessageDigest.getInstance("SHA-512");

    FileDesc desc = new FileDesc(file.toString(), null, null);
    List<Bloc> list = new ArrayList<Bloc>();
    try (FileInputStream fis = new FileInputStream(root.resolve(file).toString())) {
      byte[] buf = new byte[blocSize];
      byte[] h;
      int s;
      while ((s = fis.read(buf)) != -1) {
        int c;
        while (s < buf.length && (c = fis.read()) != -1) buf[s++] = (byte) c;
        fileMd.update(buf, 0, s);

        // padding
        byte p = 0;
        while (s < buf.length) buf[s++] = ++p;
        h = md.digest(buf);
        Bloc bloc = new Bloc(RollingChecksum.compute(buf), new Hash(h));
        list.add(bloc);
      }
      h = fileMd.digest();
      desc.fileHash = new Hash(h);
      desc.blocs = list.toArray(new Bloc[0]);
    }
    return desc;
  }
Ejemplo n.º 2
0
 public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs)
     throws IOException {
   if (m != null) m.reset(root.relativize(dir).toString());
   return m == null || m.matches() || m.hitEnd()
       ? FileVisitResult.CONTINUE
       : FileVisitResult.SKIP_SUBTREE;
 }
Ejemplo n.º 3
0
 public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
   if (attrs.isRegularFile()) {
     if (m != null) m.reset(root.relativize(file).toString());
     if (m == null || m.matches())
       futures.add(exec.submit(new FileLoader(root, file, blocSize)));
   }
   return FileVisitResult.CONTINUE;
 }
Ejemplo n.º 4
0
 public static void load(Collection<FileDesc> files, Path root, int blocSize, Pattern pattern)
     throws IOException {
   root = root.toAbsolutePath().normalize();
   Visitor visitor = new Visitor(root, blocSize, pattern);
   Files.walkFileTree(root, visitor);
   for (Future<FileDesc> future : visitor.futures()) {
     try {
       files.add(future.get());
     } catch (Exception e) {
       log.error("", e);
     }
   }
 }
Ejemplo n.º 5
0
 public FileDesc call() throws Exception {
   return loadFile(root, root.relativize(file), blocSize);
 }