org.castor.core.util
Class HexDecoder

java.lang.Object
  org.castor.core.util.HexDecoder

public final class HexDecoder
extends Object

Hex encoder/decoder implementation (borrowed from BouncyCastle=.

Since:

1.1.1

Version:

$Revision$

Author:

Johan Lindquist

Field Summary

static String	DATA_TYPE Identifies the data type supported by this decoder.
protected static byte[]	DECODING_TABLE Decoding table.
protected static byte[]	ENCODING_TABLE Encoding table.

Method Summary

static int	decode(byte[] data, int off, int length, OutputStream out) Decodes the Hex encoded byte data writing it to the given output stream, whitespace characters will be ignored.
static byte[]	decode(String data) Decodes the HEX input data producing a output stream.
static int	decode(String data, OutputStream out) Decodes the Hex encoded String data writing it to the given output stream, whitespace characters will be ignored.
static String	encode(byte[] data) Encodes the input data producing a Hex output stream.
static int	encode(byte[] data, int off, int length, OutputStream out) Encodes the input data producing a Hex output stream.
protected static void	initialiseDecodingTable() Initialize the decoding table.

Methods inherited from class java.lang.Object

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

Field Detail

DATA_TYPE

public static final String DATA_TYPE

Identifies the data type supported by this decoder.

See Also:

Constant Field Values

ENCODING_TABLE

protected static final byte[] ENCODING_TABLE

Encoding table.

DECODING_TABLE

protected static final byte[] DECODING_TABLE

Decoding table.

Method Detail

initialiseDecodingTable

protected static void initialiseDecodingTable()

Initialize the decoding table.

encode

public static int encode(byte[] data,
                         int off,
                         int length,
                         OutputStream out)
                  throws IOException

Encodes the input data producing a Hex output stream.

Parameters:

data - The input data to be HEX encoded

off - Initiak offset

length - Initial length of the input data array

out - The OutputStream instance holding the encoded input data.

Returns:

the number of bytes produced.

Throws:

IOException - If encoding fails.

decode

public static int decode(byte[] data,
                         int off,
                         int length,
                         OutputStream out)
                  throws IOException

Decodes the Hex encoded byte data writing it to the given output stream, whitespace characters will be ignored.

Parameters:

data - The data to be encoded

off - Initial offset.

length - Initial length

out - The OutputStream instance

Returns:

the number of bytes produced.

Throws:

IOException - If encoding failed.

decode

public static int decode(String data,
                         OutputStream out)
                  throws IOException

Decodes the Hex encoded String data writing it to the given output stream, whitespace characters will be ignored.

Parameters:

data - The data to be encoded

out - The OutputStream instance

Returns:

the number of bytes produced.

Throws:

IOException - If encoding failed.

encode

public static String encode(byte[] data)

Encodes the input data producing a Hex output stream.

Parameters:

data - Input data to encode.

Returns:

the number of bytes produced.

decode

public static byte[] decode(String data)

Decodes the HEX input data producing a output stream.

Parameters:

data - Input data to be decoded.

Returns:

A byte array representing the decoded input data.