org.abstracthorizon.mercury.common.io
Class RangedInputStream

java.lang.Object
  java.io.InputStream
      org.abstracthorizon.mercury.common.io.RangedInputStream

All Implemented Interfaces:

Closeable

public class RangedInputStream
extends InputStream

Input stream that returns only a defined range

Author:

Daniel Sendula

Field Summary

protected long	from Starting offset
protected InputStream	is Underlying input stream
protected long	left Number of bytes left to be read
protected long	marked Mark
protected long	readlimit Read limit
protected long	readlimitCache Read limit cache
protected long	to End offset

Constructor Summary

RangedInputStream(InputStream is, long from, long to)
Constructor

Method Summary

int	available()
void	close()
void	mark(int readlimit)
boolean	markSupported()
int	read()
int	read(byte[] b)
int	read(byte[] b, int off, int len)
void	reset()
long	skip(long n)

Methods inherited from class java.lang.Object

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

Field Detail

is

protected InputStream is

Underlying input stream

from

protected long from

Starting offset

to

protected long to

End offset

left

protected long left

Number of bytes left to be read

marked

protected long marked

Mark

readlimit

protected long readlimit

Read limit

readlimitCache

protected long readlimitCache

Read limit cache

Constructor Detail

RangedInputStream

public RangedInputStream(InputStream is,
                         long from,
                         long to)
                  throws IOException

Constructor

Parameters:

is - input stream

from - from offset

to - to offset

Throws:

IOException

Method Detail

available

public int available()
              throws IOException

Overrides:

available in class InputStream

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Overrides:

close in class InputStream

Throws:

IOException

mark

public void mark(int readlimit)

Overrides:

mark in class InputStream

markSupported

public boolean markSupported()

Overrides:

markSupported in class InputStream

read

public int read()
         throws IOException

Specified by:

read in class InputStream

Throws:

IOException

read

public int read(byte[] b)
         throws IOException

Overrides:

read in class InputStream

Throws:

IOException

read

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

Overrides:

read in class InputStream

Throws:

IOException

reset

public void reset()
           throws IOException

Overrides:

reset in class InputStream

Throws:

IOException

skip

public long skip(long n)
          throws IOException

Overrides:

skip in class InputStream

Throws:

IOException