dk.dma.ais.binary

Class BinArray

java.lang.Object

dk.dma.ais.binary.BinArray

public class BinArray
extends Object

Class to represent a binary array with utility methods to add and extract values

Constructor Summary

Constructors

Constructor and Description
BinArray()

Method Summary

Modifier and Type	Method and Description
void	append(BinArray binArray) Append another binary array
void	append(long val, int bits) Append value with number of bits bits
void	appendSixbit(String str, int padBits) Append bits from a sixbit encoded string
void	doneReading() Done reading.
int	getLength() Get bit length
int	getReadPtr() Get the position of the read ptr within the array
String	getString(int len) Get six bit string representation of the next len six bit characters and move read ptr
long	getVal(int bits) Get value from the next bits number of bits and move read pointer
long	getVal(int from, int to) Get value from bit position from and to
boolean	hasMoreBits() Returns true if there are more bits to read
static int	intToascii(int val) Convert six bit int value to character
static int	intToSixbit(int val) Convert a int value to a sixbit ascii value
int	size() Size int.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

BinArray

public BinArray()

Method Detail

appendSixbit

public void appendSixbit(String str,
                         int padBits)
                  throws SixbitException

Append bits from a sixbit encoded string

Parameters:

str - the str

padBits - the pad bits

Throws:

SixbitException - the sixbit exception

append

public void append(BinArray binArray)

Append another binary array

Parameters:

binArray - the bin array

append

public void append(long val,
                   int bits)

Append value with number of bits bits

Parameters:

val - the val

bits - the bits

getString

public String getString(int len)
                 throws SixbitException

Get six bit string representation of the next len six bit characters and move read ptr

Parameters:

len - the len

Returns:

string string

Throws:

SixbitException - the sixbit exception

getVal

public long getVal(int bits)
            throws SixbitException

Get value from the next bits number of bits and move read pointer

Parameters:

bits - the bits

Returns:

val

Throws:

SixbitException - the sixbit exception

getVal

public long getVal(int from,
                   int to)
            throws SixbitException

Get value from bit position from and to

Parameters:

from - the from

to - the to

Returns:

val

Throws:

SixbitException - the sixbit exception

getLength

public int getLength()

Get bit length

Returns:

length

getReadPtr

public int getReadPtr()

Get the position of the read ptr within the array

Returns:

read ptr

size

public int size()

Size int.

Returns:

the int

hasMoreBits

public boolean hasMoreBits()

Returns true if there are more bits to read

Returns:

boolean

intToascii

public static int intToascii(int val)
                      throws SixbitException

Convert six bit int value to character

Parameters:

val - the val

Returns:

int

Throws:

SixbitException - the sixbit exception

intToSixbit

public static int intToSixbit(int val)
                       throws SixbitException

Convert a int value to a sixbit ascii value

Parameters:

val - the val

Returns:

int

Throws:

SixbitException - the sixbit exception

toString

public String toString()

Overrides:

toString in class Object

doneReading

public void doneReading()

Done reading.