Package org.apache.ws.commons.util

Class Base64.Decoder

java.lang.Object

org.apache.ws.commons.util.Base64.Decoder

Enclosing class:

Base64

public abstract static class Base64.Decoder
extends Object

An encoder is an object, which is able to decode char arrays in blocks of four bytes. Any such block is converted into a array of three bytes.

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	Decoder(int pBufLen)	Creates a new instance.

Method Summary

Modifier and Type	Method	Description
void	flush()	Indicates, that no more data is being expected.
void	write(char[] pData, int pOffset, int pLen)	Converts the Base64 encoded character array.
protected abstract void	writeBuffer(byte[] pBuffer, int pOffset, int pLen)	Called for writing the decoded bytes to the destination.

Methods inherited from class java.lang.Object

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

Constructor Detail

Decoder

protected Decoder(int pBufLen)

Creates a new instance.

Parameters:

pBufLen - The decoders buffer size. The decoder will store up to this number of decoded bytes before invoking writeBuffer(byte[],int,int).

Method Detail

writeBuffer

protected abstract void writeBuffer(byte[] pBuffer,
                                    int pOffset,
                                    int pLen)
                             throws IOException

Called for writing the decoded bytes to the destination.

Parameters:

pBuffer - The byte array being written.

pOffset - Offset of the first byte being written.

pLen - Number of bytes being written.

Throws:

IOException - Writing to the destination failed.

write

public void write(char[] pData,
                  int pOffset,
                  int pLen)
           throws IOException

Converts the Base64 encoded character array.

Parameters:

pData - The character array being decoded.

pOffset - Offset of first character being decoded.

pLen - Number of characters being decoded.

Throws:

Base64.DecodingException - Decoding failed.

IOException - An invocation of the writeBuffer(byte[],int,int) method failed.

flush

public void flush()
           throws IOException

Indicates, that no more data is being expected. Writes all currently buffered data to the destination by invoking writeBuffer(byte[],int,int).

Throws:

Base64.DecodingException - Decoding failed (Unexpected end of file).

IOException - An invocation of the writeBuffer(byte[],int,int) method failed.