org.apache.axiom.util.base64

Class Base64Utils

java.lang.Object

org.apache.axiom.util.base64.Base64Utils

Direct Known Subclasses:

Base64

public class Base64Utils
extends java.lang.Object

Contains utility methods to work with base64 encoded data.

Field Summary

Fields

Modifier and Type	Field and Description
private static char[]	S_BASE64CHAR
private static char	S_BASE64PAD
private static byte[]	S_DECODETABLE

Constructor Summary

Constructors

Constructor and Description
Base64Utils()

Method Summary

Modifier and Type	Method and Description
static byte[]	decode(char[] data, int off, int len)
static void	decode(char[] data, int off, int len, java.io.OutputStream ostream)
static byte[]	decode(java.lang.String data)
static void	decode(java.lang.String data, java.io.OutputStream ostream)
private static int	decode0(char[] ibuf, byte[] obuf, int wp)
static java.lang.String	encode(byte[] data) Returns base64 representation of specified byte array.
static java.lang.String	encode(byte[] data, int off, int len) Returns base64 representation of specified byte array.
static void	encode(byte[] data, int off, int len, java.io.OutputStream ostream) Outputs base64 representation of the specified byte array to a byte stream.
static void	encode(byte[] data, int off, int len, java.lang.StringBuffer buffer) Outputs base64 representation of the specified byte array to the specified String Buffer
static void	encode(byte[] data, int off, int len, java.io.Writer writer) Outputs base64 representation of the specified byte array to a character stream.
static java.lang.String	encode(javax.activation.DataHandler dh) Get a base64 representation of the content of a given DataHandler as a string.
static char[]	encodeToCharArray(javax.activation.DataHandler dh) Get a base64 representation of the content of a given DataHandler as a char array.
private static int	getBufferSize(javax.activation.DataHandler dh)
private static int	getEncodedSize(int unencodedSize)
static boolean	isValidBase64Encoding(java.lang.String data) checks input string for invalid Base64 characters

Methods inherited from class java.lang.Object

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

Field Detail

S_BASE64CHAR

private static final char[] S_BASE64CHAR

S_BASE64PAD

private static final char S_BASE64PAD

See Also:

Constant Field Values

S_DECODETABLE

private static final byte[] S_DECODETABLE

Constructor Detail

Base64Utils

public Base64Utils()

Method Detail

getEncodedSize

private static int getEncodedSize(int unencodedSize)

getBufferSize

private static int getBufferSize(javax.activation.DataHandler dh)

encode

public static java.lang.String encode(javax.activation.DataHandler dh)
                               throws java.io.IOException

Get a base64 representation of the content of a given DataHandler as a string. This method will try to carry out the encoding operation in the most efficient way.

Parameters:

dh - the data handler with the content to encode

Returns:

the base64 encoded content

Throws:

java.io.IOException - if an I/O error occurs when reading the content of the data handler

encodeToCharArray

public static char[] encodeToCharArray(javax.activation.DataHandler dh)
                                throws java.io.IOException

Get a base64 representation of the content of a given DataHandler as a char array. This method will try to carry out the encoding operation in the most efficient way.

Parameters:

dh - the data handler with the content to encode

Returns:

the base64 encoded content

Throws:

java.io.IOException - if an I/O error occurs when reading the content of the data handler

decode0

private static int decode0(char[] ibuf,
                           byte[] obuf,
                           int wp)

decode

public static byte[] decode(char[] data,
                            int off,
                            int len)

decode

public static byte[] decode(java.lang.String data)

isValidBase64Encoding

public static boolean isValidBase64Encoding(java.lang.String data)

checks input string for invalid Base64 characters

Parameters:

data -

Returns:

true, if String contains only valid Base64 characters. false, otherwise

decode

public static void decode(char[] data,
                          int off,
                          int len,
                          java.io.OutputStream ostream)
                   throws java.io.IOException

Throws:

java.io.IOException

decode

public static void decode(java.lang.String data,
                          java.io.OutputStream ostream)
                   throws java.io.IOException

Throws:

java.io.IOException

encode

public static java.lang.String encode(byte[] data)

Returns base64 representation of specified byte array.

encode

public static java.lang.String encode(byte[] data,
                                      int off,
                                      int len)

Returns base64 representation of specified byte array.

encode

public static void encode(byte[] data,
                          int off,
                          int len,
                          java.lang.StringBuffer buffer)

Outputs base64 representation of the specified byte array to the specified String Buffer

encode

public static void encode(byte[] data,
                          int off,
                          int len,
                          java.io.OutputStream ostream)
                   throws java.io.IOException

Outputs base64 representation of the specified byte array to a byte stream.

Throws:

java.io.IOException

encode

public static void encode(byte[] data,
                          int off,
                          int len,
                          java.io.Writer writer)
                   throws java.io.IOException

Outputs base64 representation of the specified byte array to a character stream.

Throws:

java.io.IOException