it.unimi.dsi.mg4j.io
Class FastByteArrayInputStream

java.lang.Object
  java.io.InputStream
      it.unimi.dsi.mg4j.io.FastByteArrayInputStream

All Implemented Interfaces:

RepositionableStream

public class FastByteArrayInputStream

extends InputStream

implements RepositionableStream

Simple, fast and repositionable byte-array input stream.

Since:

0.6

Author:

Sebastiano Vigna

Field Summary

byte[]	array The array backing the input stream.
int	length The number of valid bytes in array starting from offset.
int	offset The first valid entry.

Constructor Summary

FastByteArrayInputStream(byte[] array)
Creates a new array input stream using a given array.

FastByteArrayInputStream(byte[] array, int offset, int length)
Creates a new array input stream using a given array fragment.

Method Summary

int	available()
void	close() Closing a fast byte array input stream has no effect.
void	mark(int dummy)
boolean	markSupported()
long	position() Returns the current stream position.
void	position(long newPosition) Sets the current stream position.
int	read()
int	read(byte[] b, int offset, int length)
void	reset()
long	skip(long n)

Methods inherited from class java.io.InputStream

read

Methods inherited from class java.lang.Object

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

Field Detail

array

public byte[] array

The array backing the input stream.

offset

public int offset

The first valid entry.

length

public int length

The number of valid bytes in array starting from offset.

Constructor Detail

FastByteArrayInputStream

public FastByteArrayInputStream(byte[] array,
                                int offset,
                                int length)

Creates a new array input stream using a given array fragment.

Parameters:

array - the backing array.

offset - the first valid entry of the array.

length - the number of valid bytes.

FastByteArrayInputStream

public FastByteArrayInputStream(byte[] array)

Creates a new array input stream using a given array.

Parameters:

array - the backing array.

Method Detail

markSupported

public boolean markSupported()

reset

public void reset()

close

public void close()

Closing a fast byte array input stream has no effect.

mark

public void mark(int dummy)

available

public int available()

skip

public long skip(long n)

read

public int read()

read

public int read(byte[] b,
                int offset,
                int length)

position

public long position()

Description copied from interface: RepositionableStream

Returns the current stream position.

Specified by:

position in interface RepositionableStream

Returns:

the current stream position.

position

public void position(long newPosition)

Description copied from interface: RepositionableStream

Sets the current stream position.

Specified by:

position in interface RepositionableStream

Parameters:

newPosition - the new stream position.