com.karmasphere.share.util
Class OffsetInputStream

java.lang.Object
  java.io.InputStream
      java.io.FilterInputStream
          com.karmasphere.share.util.OffsetInputStream

All Implemented Interfaces:

Closeable

public class OffsetInputStream
extends FilterInputStream

A simple InputStream derivative, which keeps track of the current offset.

Field Summary

protected long	markOffset Marked offset
protected long	offset Current offset

Fields inherited from class java.io.FilterInputStream

in

Constructor Summary

OffsetInputStream(InputStream in)
Create a new OffsetInputStream

OffsetInputStream(InputStream in, long offset)
Create a new OffsetInputStream with a specified initial offset.

Method Summary

long	getOffset() Get the current offset
void	mark(int readLimit) Mark the stream.
int	read() Read a byte from the stream.
int	read(byte[] data) Read from the stream.
int	read(byte[] data, int offset, int length) Read from the stream.
void	reset() Reset the stream to the last mark;
long	skip(long n) Skip some bytes.

Methods inherited from class java.io.FilterInputStream

available, close, markSupported

Methods inherited from class java.lang.Object

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

Field Detail

offset

protected long offset

Current offset

markOffset

protected long markOffset

Marked offset

Constructor Detail

OffsetInputStream

public OffsetInputStream(InputStream in)

Create a new OffsetInputStream

OffsetInputStream

public OffsetInputStream(InputStream in,
                         long offset)

Create a new OffsetInputStream with a specified initial offset.

Method Detail

getOffset

public long getOffset()

Get the current offset

read

public int read()
         throws IOException

Read a byte from the stream.

Overrides:

read in class FilterInputStream

Throws:

IOException

read

public int read(byte[] data)
         throws IOException

Read from the stream.

Overrides:

read in class FilterInputStream

Throws:

IOException

read

public int read(byte[] data,
                int offset,
                int length)
         throws IOException

Read from the stream.

Overrides:

read in class FilterInputStream

Throws:

IOException

mark

public void mark(int readLimit)

Mark the stream.

Overrides:

mark in class FilterInputStream

reset

public void reset()
           throws IOException

Reset the stream to the last mark;

Overrides:

reset in class FilterInputStream

Throws:

IOException

skip

public long skip(long n)
          throws IOException

Skip some bytes.

Overrides:

skip in class FilterInputStream

Throws:

IOException