org.cryptacular.codec

Class HexEncoder

java.lang.Object

org.cryptacular.codec.HexEncoder

All Implemented Interfaces:

Encoder

public class HexEncoder
extends java.lang.Object
implements Encoder

Stateless hexadecimal byte-to-character encoder.

Field Summary

Fields

Modifier and Type	Field and Description
private boolean	delimit Flag indicating whether to delimit every two characters with ':' as in key fingerprints, etc.
private static char[]	ENCODING_TABLE Hex character encoding table.

Constructor Summary

Constructors

Constructor and Description
HexEncoder() Creates a new instance that does not delimit bytes in the output hex string.
HexEncoder(boolean delimitBytes) Creates a new instance with optional delimiting of bytes in the output hex string.

Method Summary

Modifier and Type	Method and Description
void	encode(java.nio.ByteBuffer input, java.nio.CharBuffer output) Encodes bytes in input buffer into characters placed in the output buffer.
void	finalize(java.nio.CharBuffer output) Performs final output encoding (e.g.
int	outputSize(int inputSize) Expected number of characters in the output buffer for an input buffer of the given size.

Methods inherited from class java.lang.Object

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

Field Detail

ENCODING_TABLE

private static final char[] ENCODING_TABLE

Hex character encoding table.

delimit

private final boolean delimit

Flag indicating whether to delimit every two characters with ':' as in key fingerprints, etc.

Constructor Detail

HexEncoder

public HexEncoder()

Creates a new instance that does not delimit bytes in the output hex string.

HexEncoder

public HexEncoder(boolean delimitBytes)

Creates a new instance with optional delimiting of bytes in the output hex string.

Parameters:

delimitBytes - True to delimit every two characters (i.e. every byte) with ':' character.

Method Detail

encode

public void encode(java.nio.ByteBuffer input,
                   java.nio.CharBuffer output)
            throws EncodingException

Description copied from interface: Encoder

Encodes bytes in input buffer into characters placed in the output buffer. This method may be called multiple times, followed by Encoder.finalize(java.nio.CharBuffer) after all input bytes have been provided.

Specified by:

encode in interface Encoder

Parameters:

input - Input byte buffer.

output - Output character buffer.

Throws:

EncodingException - on encoding errors.

finalize

public void finalize(java.nio.CharBuffer output)
              throws EncodingException

Description copied from interface: Encoder

Performs final output encoding (e.g. padding) after all input bytes have been provided.

Specified by:

finalize in interface Encoder

Parameters:

output - Output character buffer.

Throws:

EncodingException - on encoding errors.

outputSize

public int outputSize(int inputSize)

Description copied from interface: Encoder

Expected number of characters in the output buffer for an input buffer of the given size.

Specified by:

outputSize in interface Encoder

Parameters:

inputSize - Size of input buffer in bytes.

Returns:

Minimum character buffer size required to store all encoded input bytes.