com.twelvemonkeys.io.enc
Class Base64Decoder

java.lang.Object
  com.twelvemonkeys.io.enc.Base64Decoder

All Implemented Interfaces:

Decoder

public final class Base64Decoder
extends Object
implements Decoder

Decoder implementation for standard base64 encoding.

Version:

$Id: //depot/branches/personal/haraldk/twelvemonkeys/release-2/twelvemonkeys-core/src/main/java/com/twelvemonkeys/io/enc/Base64Decoder.java#2 $

Author:

Harald Kuhr

See Also:

RFC 1421, , Base64Encoder

Constructor Summary

Base64Decoder()

Method Summary

int	decode(InputStream stream, ByteBuffer buffer) Decodes up to buffer.length bytes from the given input stream, into the given buffer.
protected boolean	decodeAtom(InputStream pInput, ByteBuffer pOutput, int pLength)
protected static int	readFully(InputStream pStream, byte[] pBytes, int pOffset, int pLength)

Methods inherited from class java.lang.Object

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

Constructor Detail

Base64Decoder

public Base64Decoder()

Method Detail

readFully

protected static int readFully(InputStream pStream,
                               byte[] pBytes,
                               int pOffset,
                               int pLength)
                        throws IOException

Throws:

IOException

decodeAtom

protected boolean decodeAtom(InputStream pInput,
                             ByteBuffer pOutput,
                             int pLength)
                      throws IOException

Throws:

IOException

decode

public int decode(InputStream stream,
                  ByteBuffer buffer)
           throws IOException

Description copied from interface: Decoder

Decodes up to buffer.length bytes from the given input stream, into the given buffer.

Specified by:

decode in interface Decoder

Parameters:

stream - the input stream to decode data from

buffer - buffer to store the read data

Returns:

the total number of bytes read into the buffer, or 0 if there is no more data because the end of the stream has been reached.

Throws:

DecodeException - if encoded data is corrupt.

IOException - if an I/O error occurs.

EOFException - if a premature end-of-file is encountered.