org.avineas.comli

Class Coder

java.lang.Object

org.avineas.comli.Coder

public class Coder
extends java.lang.Object

Coder for encoding and decoding values into an array of bytes. Useful for master usage and slave implements.

Author:

A. van Wijngaarden

Method Summary

Methods

Modifier and Type	Method and Description
static int	decode(byte[] data, int off) Decode an integer (actually a word) value from a byte array
static void	encode(int value, byte[] data, int off) Encode an integer (actually a word) value into a byte array.
static int	fromHexBytes(byte[] data, int offset, int size) Convert a byte array with a hex specification to an integer.
static byte[]	toHexBytes(int value, int size) Convert an integer value to a byte array containing the ASCII representation of the integer.
static void	toHexBytes(int value, int size, byte[] to, int offset) Variant to put data immediately into a byte array.

Methods inherited from class java.lang.Object

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

Method Detail

toHexBytes

public static byte[] toHexBytes(int value,
                int size)

Convert an integer value to a byte array containing the ASCII representation of the integer.

Parameters:

value - The value to check

size - The size in bytes of the output array

Returns:

A byte array containing the ascii representation of the integer

toHexBytes

public static void toHexBytes(int value,
              int size,
              byte[] to,
              int offset)

Variant to put data immediately into a byte array.

Parameters:

value - The value to set

size - The size in which to code

to - The output buffer

offset - The offset in the output buffer

fromHexBytes

public static int fromHexBytes(byte[] data,
               int offset,
               int size)

Convert a byte array with a hex specification to an integer. It is assumed that the byte array contains ascii characters.

Parameters:

data - The buffer from which to decode

offset - The offset in the buffer to start the coding

size - The size to use

Returns:

The value of the converted data

encode

public static void encode(int value,
          byte[] data,
          int off)

Encode an integer (actually a word) value into a byte array.

Parameters:

value - The value to encode

data - The buffer to encode into

off - The offset where to start coding

decode

public static int decode(byte[] data,
         int off)

Decode an integer (actually a word) value from a byte array

Parameters:

data - The buffer to decode from

off - The offset where to start the coding

Returns:

The word value