org.apache.xerces.utils
Class Base64

java.lang.Object
  |
  +--org.apache.xerces.utils.Base64

public final class Base64

extends java.lang.Object

This class provides encode/decode for RFC 2045 Base64 as defined by RFC 2045, N. Freed and N. Borenstein. RFC 2045: Multipurpose Internet Mail Extensions (MIME) Part One: Format of Internet Message Bodies. Reference 1996 Available at: http://www.ietf.org/rfc/rfc2045.txt This class is used by XML Schema binary format validation This implementation does not encode/decode streaming data. You need the data that you will encode/decode already on a byte arrray.

Version:

$Id: Base64.java,v 1.8 2001/05/29 22:19:01 neilg Exp $

Author:

Jeffrey Rodriguez, Sandy Gao

Constructor Summary

Base64()

Method Summary

static byte[]	decode(byte[] base64Data) Decodes Base64 data into octects
static byte[]	encode(byte[] binaryData) Encodes hex octects into Base64
static int	getDecodedDataLength(byte[] base64Data) returns length of decoded data given an array containing encoded data.
static boolean	isArrayByteBase64(byte[] arrayOctect)
static boolean	isBase64(byte octect)
static boolean	isBase64(java.lang.String isValidString)
protected static boolean	isData(byte octect)
protected static boolean	isPad(byte octect)
protected static boolean	isWhiteSpace(byte octect)
static byte[]	removeWhiteSpace(byte[] data) remove WhiteSpace from MIME containing encoded Base64 data.

Methods inherited from class java.lang.Object

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

Constructor Detail

Base64

public Base64()

Method Detail

isWhiteSpace

protected static boolean isWhiteSpace(byte octect)

isPad

protected static boolean isPad(byte octect)

isData

protected static boolean isData(byte octect)

isBase64

public static boolean isBase64(java.lang.String isValidString)

isBase64

public static boolean isBase64(byte octect)

removeWhiteSpace

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

remove WhiteSpace from MIME containing encoded Base64 data. e.g. " sdffferererrereresfsdfsdfsdff\n\r iiiiiiiiierejrlkwjerklwjerwerwr==\n\r"

Parameters:

data -

Returns:

isArrayByteBase64

public static boolean isArrayByteBase64(byte[] arrayOctect)

encode

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

Encodes hex octects into Base64

Parameters:

binaryData - Array containing binaryData

Returns:

Encoded Base64 array

decode

public static byte[] decode(byte[] base64Data)

Decodes Base64 data into octects

Parameters:

binaryData - Byte array containing Base64 data

Returns:

Array containind decoded data.

getDecodedDataLength

public static int getDecodedDataLength(byte[] base64Data)

returns length of decoded data given an array containing encoded data. WhiteSpace removing is done if data array not valid.

Parameters:

base64Data -

Returns:

a -1 would be return if not