org.jwall.web.http.nio
Class BufferedReadableByteChannel

java.lang.Object
  org.jwall.web.http.nio.BufferedReadableByteChannel

All Implemented Interfaces:

Closeable, Channel, ReadableByteChannel

public class BufferedReadableByteChannel
extends Object
implements ReadableByteChannel

This class implements a few convenient methods, mainly for reading a newline terminated line from a channel. It relies on a standard readable byte channel provided by a number of JDK classes, which are given to the constructor at creation time.

Author:

Christian Bockermann <chris@jwall.org>

Constructor Summary

BufferedReadableByteChannel(ReadableByteChannel input)
This constructor creates a new instance of this class with an internal buffer of 32k bytes.

BufferedReadableByteChannel(ReadableByteChannel input, int bufSize)
This constructor creates a new instance of this class with an internal buffer of the given buffer-size.

Method Summary

void	close()
boolean	isOpen()
int	read(ByteBuffer dst)
String	readLine() This method tries to read a full line, terminated by a \n newline character, from the currently available bytes.

Methods inherited from class java.lang.Object

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

Constructor Detail

BufferedReadableByteChannel

public BufferedReadableByteChannel(ReadableByteChannel input)

This constructor creates a new instance of this class with an internal buffer of 32k bytes.

Parameters:

input - The byte-channel this instance reads from.

BufferedReadableByteChannel

public BufferedReadableByteChannel(ReadableByteChannel input,
                                   int bufSize)

This constructor creates a new instance of this class with an internal buffer of the given buffer-size.

Parameters:

input -

bufSize -

Method Detail

readLine

public String readLine()
                throws IOException

This method tries to read a full line, terminated by a \n newline character, from the currently available bytes. If there can no complete line be read (i.e. no newline char in the buffer), then the method transfers the currently available bytes into a "partial complete line" and immediately returns null.

Returns:

A new-line terminated line or null if no complete line can be read from the currently available bytes.

Throws:

IOExecption - in case

IOException

read

public int read(ByteBuffer dst)
         throws IOException

Specified by:

read in interface ReadableByteChannel

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in interface Channel

Throws:

IOException

See Also:

Channel.close()

isOpen

public boolean isOpen()

Specified by:

isOpen in interface Channel

See Also:

Channel.isOpen()