javazoom.transfer.client.util
Class Base64

java.lang.Object
  javazoom.transfer.client.util.Base64

public class Base64
extends java.lang.Object

Author:

Administrateur

Field Summary

protected static byte[]	dec_table A static array that maps ASCII code points to a 6-bit integer, or -1 for an invalid code point.
protected static char[]	enc_table A static array that maps 6-bit integers to a specific char.

Constructor Summary

Base64()
Base64 decoder.

Method Summary

java.lang.String	bytesToCharString(byte[] retData) Returns a String matching to the byte array.
java.lang.String	decode(java.lang.String msg) Return Base64 decoded String.
byte[]	decodeBase64(byte[] data) Decodes a byte array containing base64-encoded ASCII.
int	decodeBase64(byte[] ret, int ret_off, byte a, byte b, byte c, byte d) Given a block of 4 encoded bytes { a, b, c, d }, this method decodes up to 3 bytes of output, and stores them starting at ret[ret_offset].
byte[]	decodeBase64(java.lang.String msg) Decodes a base64-encoded String.
byte[]	encodeAsByteArray(byte[] data) Encodes data as a byte array using base64 encoding.
java.lang.String	encodeBase64(byte[] data) Encodes data as a String using base64 encoding.
java.lang.String	encodeBase64(java.lang.String data) Encode base64 string.

Methods inherited from class java.lang.Object

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

Field Detail

enc_table

protected static final char[] enc_table

A static array that maps 6-bit integers to a specific char.

dec_table

protected static final byte[] dec_table

A static array that maps ASCII code points to a 6-bit integer, or -1 for an invalid code point.

Constructor Detail

Base64

public Base64()

Base64 decoder.

Method Detail

decodeBase64

public byte[] decodeBase64(byte[] data)

Decodes a byte array containing base64-encoded ASCII. Characters with ASCII code points <= 32 (this includes whitespace and newlines) are ignored.

Returns:

the decoded data.

decodeBase64

public byte[] decodeBase64(java.lang.String msg)
                    throws java.lang.IllegalArgumentException

Decodes a base64-encoded String. Characters with ASCII code points <= 32 (this includes whitespace and newlines) are ignored.

Returns:

the decoded data.

Throws:

java.lang.IllegalArgumentException

decode

public java.lang.String decode(java.lang.String msg)
                        throws java.lang.IllegalArgumentException

Return Base64 decoded String.

Parameters:

msg -

Returns:

Throws:

java.lang.IllegalArgumentException

decodeBase64

public int decodeBase64(byte[] ret,
                        int ret_off,
                        byte a,
                        byte b,
                        byte c,
                        byte d)

Given a block of 4 encoded bytes { a, b, c, d }, this method decodes up to 3 bytes of output, and stores them starting at ret[ret_offset].

Returns:

the number of bytes converted.

encodeBase64

public java.lang.String encodeBase64(java.lang.String data)

Encode base64 string.

Parameters:

data -

Returns:

encodeBase64

public java.lang.String encodeBase64(byte[] data)

Encodes data as a String using base64 encoding. Line breaks in the output are represented as CR LF.

Returns:

the encoded string.

bytesToCharString

public java.lang.String bytesToCharString(byte[] retData)

Returns a String matching to the byte array.

encodeAsByteArray

public byte[] encodeAsByteArray(byte[] data)

Encodes data as a byte array using base64 encoding. The characters 'A'-'Z', 'a'-'z', '0'-'9', '+', '/', and '=' in the output are mapped to their ASCII code points. Line breaks in the output are represented as CR LF (codes 13 and 10).

Returns:

the encoded byte array.