Constructor Detail

• ChecksumInputStream

  public ChecksumInputStream(InputStream stream,
                             Checksummer cksummer)

  Constructor.

  Parameters:

  stream - Stream to be filtered

  cksummer - Object to calculate checksum on the bytes as they are read

Method Detail

• read

  public int read()
           throws IOException

  Reads a byte from the subsumed stream, updating the byte count and the checksums.

  Overrides:

  read in class FilterInputStream

  Throws:

  IOException

• read

  public int read(byte[] b)
           throws IOException

  Reads some number of bytes from the input stream and stores them into the buffer array b. The number of bytes actually read is returned as an integer. All bytes read are fed through the checksummer.

  Overrides:

  read in class FilterInputStream

  Throws:

  IOException

• read

  public int read(byte[] b,
                  int off,
                  int len)
           throws IOException

  Reads up to len bytes of data from the input stream into an array of bytes. An attempt is made to read as many as len bytes, but a smaller number may be read, possibly zero. The number of bytes actually read is returned as an integer. All bytes read are fed through the checksummer.

  Overrides:

  read in class FilterInputStream

  Throws:

  IOException

• skip

  public long skip(long n)
            throws IOException

  Skips n bytes. Reads them and feeds them through the checksummer.

  Overrides:

  skip in class FilterInputStream

  Throws:

  IOException

• close

  public void close()
             throws IOException

  Closes the subsumed stream.

  Specified by:

  close in interface Closeable

  Specified by:

  close in interface AutoCloseable

  Overrides:

  close in class FilterInputStream

  Throws:

  IOException

• getNBytes

  public long getNBytes()

  Returns the byte count to date on the stream. This returns the number of bytes read. Because of buffering, this is not a reliable indicator of how many bytes have actually been processed.

• getChecksummer

  public Checksummer getChecksummer()

  Returns the Checksummer object.