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renderkits.util
Class Base64  

java.lang.Object
  renderkits.util.Base64

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public final class Base64

extends java.lang.Object

Base64 encoder and decoder.

This class provides encoding/decoding methods for the Base64 encoding 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

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Field Summary
private static byte[]	base64Alphabet
private static int	BASELENGTH
protected static java.lang.String	DEFAULT_CHAR_ENCODING
private static int	EIGHTBIT
private static byte[]	EMPTY_BYTE_ARRAY
private static int	FOURBYTE
private static byte[]	lookUpBase64Alphabet
private static int	LOOKUPLENGTH
private static byte	PAD
private static int	SIGN
private static int	SIXBIT
private static int	SIXTEENBIT
private static int	TWENTYFOURBITGROUP

 

Constructor Summary
private	Base64()

 

Method Summary
static byte[]	decode(byte[] base64Data)           Decodes Base64 data into octects
static byte[]	encode(byte[] binaryData)           Encodes hex octects into Base64
static java.lang.String	encode(java.lang.String data)           Returns the base64 encoding of String.
static java.lang.String	encode(java.lang.String data, java.lang.String charEncoding)           Returns the base64 encoding of String (by first converting to byte[], using the specified charEncoding).
static boolean	isBase64(byte octect)
static boolean	isBase64(byte[] arrayOctect)
static boolean	isBase64(java.lang.String isValidString)

 

Methods inherited from class java.lang.Object

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

 

Field Detail

DEFAULT_CHAR_ENCODING

protected static final java.lang.String DEFAULT_CHAR_ENCODING

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Constant Field Values

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BASELENGTH

private static final int BASELENGTH

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Constant Field Values

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LOOKUPLENGTH

private static final int LOOKUPLENGTH

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Constant Field Values

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TWENTYFOURBITGROUP

private static final int TWENTYFOURBITGROUP

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Constant Field Values

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EIGHTBIT

private static final int EIGHTBIT

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Constant Field Values

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SIXTEENBIT

private static final int SIXTEENBIT

See Also:

Constant Field Values

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SIXBIT

private static final int SIXBIT

See Also:

Constant Field Values

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FOURBYTE

private static final int FOURBYTE

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Constant Field Values

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SIGN

private static final int SIGN

See Also:

Constant Field Values

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PAD

private static final byte PAD

See Also:

Constant Field Values

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EMPTY_BYTE_ARRAY

private static final byte[] EMPTY_BYTE_ARRAY

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base64Alphabet

private static byte[] base64Alphabet

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lookUpBase64Alphabet

private static byte[] lookUpBase64Alphabet

Constructor Detail

Base64

private Base64()

Method Detail

isBase64

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

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isBase64

public static boolean isBase64(byte octect)

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isBase64

public static boolean isBase64(byte[] arrayOctect)

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encode

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

Encodes hex octects into Base64

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encode

public static java.lang.String encode(java.lang.String data)

Returns the base64 encoding of String. First the String is converted to byte[], using the character encoding of ISO-8859-1.

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encode

public static java.lang.String encode(java.lang.String data,
                                      java.lang.String charEncoding)
                               throws java.io.UnsupportedEncodingException

Returns the base64 encoding of String (by first converting to byte[], using the specified charEncoding). The return value is also a String. The Default codeEncoding is ISO-8859-1.

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decode

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

Decodes Base64 data into octects

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