Package org.apache.commons.codec.binary

Class BaseNCodecOutputStream

java.lang.Object

java.io.OutputStream

java.io.FilterOutputStream

org.apache.commons.codec.binary.BaseNCodecOutputStream

All Implemented Interfaces:

java.io.Closeable, java.io.Flushable, java.lang.AutoCloseable

Direct Known Subclasses:

Base16OutputStream, Base32OutputStream, Base64OutputStream

public class BaseNCodecOutputStream
extends java.io.FilterOutputStream

Abstract superclass for Base-N output streams.

To write the EOF marker without closing the stream, call eof() or use an Apache Commons IO CloseShieldOutputStream.

Since:

1.5

Constructor Summary

Constructors

Constructor	Description
BaseNCodecOutputStream(java.io.OutputStream outputStream, BaseNCodec basedCodec, boolean doEncode)	Constructs a new instance.

Method Summary

Modifier and Type	Method	Description
void	close()	Closes this output stream and releases any system resources associated with the stream.
void	eof()	Writes EOF.
void	flush()	Flushes this output stream and forces any buffered output bytes to be written out to the stream.
boolean	isStrictDecoding()	Returns true if decoding behavior is strict.
void	write(byte[] array, int offset, int len)	Writes len bytes from the specified b array starting at offset to this output stream.
void	write(int i)	Writes the specified byte to this output stream.

Methods inherited from class java.io.FilterOutputStream

write

Methods inherited from class java.io.OutputStream

nullOutputStream

Methods inherited from class java.lang.Object

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

Constructor Detail

BaseNCodecOutputStream

public BaseNCodecOutputStream(java.io.OutputStream outputStream,
                              BaseNCodec basedCodec,
                              boolean doEncode)

Constructs a new instance. TODO should this be protected?

Parameters:

outputStream - the underlying output or null.

basedCodec - a BaseNCodec.

doEncode - true to encode, false to decode, TODO should be an enum?

Method Detail

close

public void close()
           throws java.io.IOException

Closes this output stream and releases any system resources associated with the stream.

To write the EOF marker without closing the stream, call eof() or use an Apache Commons IO CloseShieldOutputStream.

Specified by:

close in interface java.lang.AutoCloseable

Specified by:

close in interface java.io.Closeable

Overrides:

close in class java.io.FilterOutputStream

Throws:

java.io.IOException - if an I/O error occurs.

eof

public void eof()

Writes EOF.

Since:

1.11

flush

public void flush()
           throws java.io.IOException

Flushes this output stream and forces any buffered output bytes to be written out to the stream.

Specified by:

flush in interface java.io.Flushable

Overrides:

flush in class java.io.FilterOutputStream

Throws:

java.io.IOException - if an I/O error occurs.

isStrictDecoding

public boolean isStrictDecoding()

Returns true if decoding behavior is strict. Decoding will raise an IllegalArgumentException if trailing bits are not part of a valid encoding.

The default is false for lenient encoding. Decoding will compose trailing bits into 8-bit bytes and discard the remainder.

Returns:

true if using strict decoding

Since:

1.15

write

public void write(byte[] array,
                  int offset,
                  int len)
           throws java.io.IOException

Writes len bytes from the specified b array starting at offset to this output stream.

Overrides:

write in class java.io.FilterOutputStream

Parameters:

array - source byte array

offset - where to start reading the bytes

len - maximum number of bytes to write

Throws:

java.io.IOException - if an I/O error occurs.

java.lang.NullPointerException - if the byte array parameter is null

java.lang.IndexOutOfBoundsException - if offset, len or buffer size are invalid

write

public void write(int i)
           throws java.io.IOException

Writes the specified byte to this output stream.

Overrides:

write in class java.io.FilterOutputStream

Parameters:

i - source byte

Throws:

java.io.IOException - if an I/O error occurs.