edu.vt.middleware.crypt.io
Class AbstractEncodingFilterOutputStream

java.lang.Object
  java.io.OutputStream
      java.io.FilterOutputStream
          edu.vt.middleware.crypt.io.AbstractEncodingFilterOutputStream

All Implemented Interfaces:

Closeable, Flushable

Direct Known Subclasses:

Base64FilterOutputStream, HexFilterOutputStream

public abstract class AbstractEncodingFilterOutputStream
extends FilterOutputStream

Abstract base class for filter output streams that convert raw bytes into encoded characters.

Version:

$Revision: 2744 $

Author:

Middleware Services

Field Summary

Fields inherited from class java.io.FilterOutputStream

out

Constructor Summary

protected

AbstractEncodingFilterOutputStream(OutputStream out) Creates an output filter that encodes raw bytes into encoded character bytes in the wrapped output stream.

Method Summary

void	write(byte[] b)
void	write(byte[] b, int off, int len)
void	write(int b)
protected abstract void	writeEncoded(byte[] data, int offset, int length) Encode the given raw bytes and write the result to the wrapped output stream.

Methods inherited from class java.io.FilterOutputStream

close, flush

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractEncodingFilterOutputStream

protected AbstractEncodingFilterOutputStream(OutputStream out)

Creates an output filter that encodes raw bytes into encoded character bytes in the wrapped output stream.

Parameters:

out - Output stream to wrap.

Method Detail

write

public void write(int b)
           throws IOException

Overrides:

write in class FilterOutputStream

Throws:

IOException

write

public void write(byte[] b)
           throws IOException

Overrides:

write in class FilterOutputStream

Throws:

IOException

write

public void write(byte[] b,
                  int off,
                  int len)
           throws IOException

Overrides:

write in class FilterOutputStream

Throws:

IOException

writeEncoded

protected abstract void writeEncoded(byte[] data,
                                     int offset,
                                     int length)
                              throws IOException

Encode the given raw bytes and write the result to the wrapped output stream.

Parameters:

data - Raw bytes to be encoded and written.

offset - Starting index of data to be written in input byte array.

length - Number of bytes to be written from input byte array.

Throws:

IOException - On write errors.