sk.baka.ambient.commons
Class CountingInputStream

java.lang.Object
  java.io.InputStream
      sk.baka.ambient.commons.CountingInputStream

All Implemented Interfaces:

java.io.Closeable

Direct Known Subclasses:

NotifyingInputStream

public abstract class CountingInputStream
extends java.io.InputStream

Counts bytes which are being read.

Author:

Martin Vysny

Field Summary

int	blockLength Fire events only when a block of given size (in bytes) has been read.

Constructor Summary

CountingInputStream(java.io.InputStream in, int blockLength)
Creates new counting stream instance.

Method Summary

int	available()
void	close()
protected abstract void	countEvent(long currentPosition) Invoked when the position
long	getCurrentPosition() Returns number of bytes already read.
void	mark(int readlimit)
boolean	markSupported()
int	read()
int	read(byte[] buffer)
int	read(byte[] buffer, int offset, int count)
void	reset()
long	skip(long count)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

blockLength

public final int blockLength

Fire events only when a block of given size (in bytes) has been read. This prevents firing events after each byte read.

Constructor Detail

CountingInputStream

public CountingInputStream(java.io.InputStream in,
                           int blockLength)

Creates new counting stream instance.

Parameters:

in - poll this stream.

blockLength - Fire events only when a block of given size (in bytes) has been read. This prevents firing events after each byte read.

Method Detail

read

public int read()
         throws java.io.IOException

Specified by:

read in class java.io.InputStream

Throws:

java.io.IOException

read

public int read(byte[] buffer,
                int offset,
                int count)
         throws java.io.IOException

Overrides:

read in class java.io.InputStream

Throws:

java.io.IOException

read

public int read(byte[] buffer)
         throws java.io.IOException

Overrides:

read in class java.io.InputStream

Throws:

java.io.IOException

skip

public long skip(long count)
          throws java.io.IOException

Overrides:

skip in class java.io.InputStream

Throws:

java.io.IOException

mark

public void mark(int readlimit)

Overrides:

mark in class java.io.InputStream

reset

public void reset()
           throws java.io.IOException

Overrides:

reset in class java.io.InputStream

Throws:

java.io.IOException

getCurrentPosition

public long getCurrentPosition()

Returns number of bytes already read.

Returns:

the number of bytes.

countEvent

protected abstract void countEvent(long currentPosition)

Invoked when the position

Parameters:

currentPosition -

available

public int available()
              throws java.io.IOException

Overrides:

available in class java.io.InputStream

Throws:

java.io.IOException

close

public void close()
           throws java.io.IOException

Specified by:

close in interface java.io.Closeable

Overrides:

close in class java.io.InputStream

Throws:

java.io.IOException

markSupported

public boolean markSupported()

Overrides:

markSupported in class java.io.InputStream