org.apache.oodt.commons.util

Class Base64

java.lang.Object

org.apache.oodt.commons.util.Base64

public class Base64
extends Object

Base 64 encoding and decoding. This class provides methods for RFC-1521 specified "base 64" encoding and decoding of arbitrary data. Pass a byte array into the encode(byte[]) method and you'll get a byte array result where all of the bytes are printable ASCII values. Pass that result into decode(byte[]) and you'll get your original byte array.

Sincere thanks to Tom Daley for providing a sample encoder algorithm and a great explanation of how RFC-1521 is supposed to work.

Author:

Kelly

Method Summary

Modifier and Type	Method and Description
static byte[]	decode(byte[] data) Decode from base 64.
static byte[]	decode(byte[] data, int offset, int length) Decode from base 64.
static byte[]	encode(byte[] data) Encode into base 64.
static byte[]	encode(byte[] data, int offset, int length) Encode into base 64.
static void	main(String[] argv) Command-line runner that encodes or decodes.

Methods inherited from class java.lang.Object

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

Method Detail

encode

public static byte[] encode(byte[] data)

Encode into base 64. Encode the given data into RFC-1521 base 64. Encoding a null array gives a null result.

Parameters:

data - The data to encode.

Returns:

Base-64 encoded data.

encode

public static byte[] encode(byte[] data,
                            int offset,
                            int length)

Encode into base 64. Encode the given data into RFC-1521 base 64. Encoding a null array gives a null result. Start encoding at the given offset and go for the given amount of bytes.

Parameters:

data - The data to encode.

offset - Where to start looking for data to encode.

length - How much data to encode.

Returns:

Base-64 encoded data

decode

public static byte[] decode(byte[] data)

Decode from base 64. Decode the given RFC-1521 base 64 encoded bytes into the original data they represent. Decoding null data gives a null result.

Parameters:

data - Base-64 encoded data to decode.

Returns:

Decoded data.

decode

public static byte[] decode(byte[] data,
                            int offset,
                            int length)

Decode from base 64. Decode the given RFC-1521 base 64 encoded bytes into the original data they represent. Decoding null data gives a null result.

Parameters:

data - Base-64 encoded data to decode.

offset - Where to start looking for data to decode.

length - How much data to decode.

Returns:

Decoded data.

main

public static void main(String[] argv)
                 throws IOException

Command-line runner that encodes or decodes.

Parameters:

argv - Command-line arguments.

Throws:

IOException