korat.utils.io
Class BitInputStream

java.lang.Object
  java.io.InputStream
      java.io.FilterInputStream
          korat.utils.io.BitInputStream

All Implemented Interfaces:

Closeable, IBitReader

public class BitInputStream
extends FilterInputStream
implements IBitReader

Utility for reading bits from underlying InputStream.

Author:

Aleksandar Milicevic

Field Summary

private int	buff
private int	buffSize
private static long[]	MASKS

Fields inherited from class java.io.FilterInputStream

in

Constructor Summary

BitInputStream(InputStream in)

Method Summary

int	readBitsAsInt(int numOfBits) Reads the given number of bits and interprets them as int.
long	readBitsAsLong(int numOfBits) Reads the given number of bits and interprets them as long
double	readDouble() Reads 64 bits and interprets them as double.
float	readFloat() Reads 32 bits and interprets them as float.
int	readInt() Reads 32 bits and interprets them as int.
long	readLong() Reads 64 bits and interprets them as long.

Methods inherited from class java.io.FilterInputStream

available, close, mark, markSupported, read, read, read, reset, skip

Methods inherited from class java.lang.Object

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

Field Detail

MASKS

private static final long[] MASKS

buff

private int buff

buffSize

private int buffSize

Constructor Detail

BitInputStream

public BitInputStream(InputStream in)

Parameters:

in - As per the general contract of the FilterInputStream.

Method Detail

readBitsAsLong

public long readBitsAsLong(int numOfBits)
                    throws IOException

Description copied from interface: IBitReader

Reads the given number of bits and interprets them as long

Specified by:

readBitsAsLong in interface IBitReader

Parameters:

numOfBits - number of bits to read. Has to be in the range from 1 to 64.

Returns:

value of the read bits interpreted as long.

Throws:

IOException - if an I/O error occurs.

readBitsAsInt

public int readBitsAsInt(int numOfBits)
                  throws IOException

Description copied from interface: IBitReader

Reads the given number of bits and interprets them as int.

Specified by:

readBitsAsInt in interface IBitReader

Parameters:

numOfBits - number of bits to read. Has to be in the range from 1 to 31.

Returns:

value of the read bits interpreted as int.

Throws:

IOException - if an I/O error occurs.

readInt

public int readInt()
            throws IOException

Description copied from interface: IBitReader

Reads 32 bits and interprets them as int.

Specified by:

readInt in interface IBitReader

Returns:

value of 32 read bits interpreted as int.

Throws:

IOException - if an I/O error occurs.

readLong

public long readLong()
              throws IOException

Description copied from interface: IBitReader

Reads 64 bits and interprets them as long.

Specified by:

readLong in interface IBitReader

Returns:

value of 64 read bits interpreted as long.

Throws:

IOException - if an I/O error occurs.

readFloat

public float readFloat()
                throws IOException

Description copied from interface: IBitReader

Reads 32 bits and interprets them as float.

Specified by:

readFloat in interface IBitReader

Returns:

value of 32 read bits interpreted as float.

Throws:

IOException - if an I/O error occurs.

readDouble

public double readDouble()
                  throws IOException

Description copied from interface: IBitReader

Reads 64 bits and interprets them as double.

Specified by:

readDouble in interface IBitReader

Returns:

value of 64 read bits interpreted as double.

Throws:

IOException - if an I/O error occurs.