Exemplo n.º 1
0
  /**
   * Lis et retourne une piece depuis le fichier temporaire sur le disque (la piece doit exister)
   *
   * @param num : numéros de la piece
   */
  private synchronized byte[] readPieceTmpFile(int num) {
    if (num < 0 || num >= this.nbPieces()) {
      throw new IllegalArgumentException();
    }

    try {
      FileInputStream reader_tmp = new FileInputStream(this);
      FileChannel reader = reader_tmp.getChannel();

      int index_piece = Tools.readInt(reader, 4 + _key.length() + 4 + 4 + 4 * num);
      if (index_piece < 0) {
        throw new IllegalArgumentException();
      }

      int size = _piecesize;
      if (num == this.nbPieces() - 1) {
        size = _size - _piecesize * (this.nbPieces() - 1);
      }

      byte[] piece = Tools.readBytes(reader, this.headerSize() + _piecesize * index_piece, size);
      reader_tmp.close();

      return piece;
    } catch (Exception e) {
      System.out.println("Unable to read tmp file piece");
      e.printStackTrace();
    }
    return new byte[0];
  }
Exemplo n.º 2
0
  /**
   * Lis et retourne une pièce depuis le fichier complet sur le disque
   *
   * @param num : numéros de la piece
   */
  private byte[] readPieceCompleteFile(int num) {
    if (num < 0 || num >= this.nbPieces()) {
      throw new IllegalArgumentException();
    }

    try {
      FileInputStream reader_tmp = new FileInputStream(this);
      FileChannel reader = reader_tmp.getChannel();

      int size = _piecesize;
      if (num == this.nbPieces() - 1) {
        size = _size - _piecesize * (this.nbPieces() - 1);
      }

      byte[] piece = Tools.readBytes(reader, _piecesize * num, size);
      reader_tmp.close();

      return piece;
    } catch (Exception e) {
      System.out.println("Unable to read complete file piece");
      e.printStackTrace();
    }
    return new byte[0];
  }