net.sf.neem.impl
Class Buffers

java.lang.Object
  net.sf.neem.impl.Buffers

public abstract class Buffers
extends java.lang.Object

Buffer manipulation utilities.

Method Summary

static java.nio.ByteBuffer[]	clone(java.nio.ByteBuffer[] buffer) Clone a buffer array.
static java.nio.ByteBuffer	compact(java.nio.ByteBuffer[] buffer) Compact a buffer array to a single buffer.
static int	copy(java.nio.ByteBuffer res, java.nio.ByteBuffer[] buffer) Copy a buffer array to a single buffer.
static int	count(java.nio.ByteBuffer[] buffer) Count remaining bytes in a buffer array.
static java.nio.ByteBuffer[]	slice(java.nio.ByteBuffer[] buffer, int size) Remove data from the head of a buffer array.
static java.nio.ByteBuffer	sliceCompact(java.nio.ByteBuffer[] buffer, int size) Remove a contiguous header from the head of a buffer array.

Methods inherited from class java.lang.Object

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

Method Detail

slice

public static java.nio.ByteBuffer[] slice(java.nio.ByteBuffer[] buffer,
                                          int size)

Remove data from the head of a buffer array. No copying of data is done. This is useful if data if being resent. This operation might leave some buffers in the array with remaining()==0.

sliceCompact

public static java.nio.ByteBuffer sliceCompact(java.nio.ByteBuffer[] buffer,
                                               int size)

Remove a contiguous header from the head of a buffer array. Copying of data is done only if required to return a contiguous buffer. This might be less efficient that popData() but the result can be used safely to read data. This operation might leave some buffers in the array with remaining()==0.

compact

public static java.nio.ByteBuffer compact(java.nio.ByteBuffer[] buffer)

Compact a buffer array to a single buffer. Upon returning, all supplied buffers will have remaining()==0. Contents are returned in a single freshly allocated buffer.

count

public static int count(java.nio.ByteBuffer[] buffer)

Count remaining bytes in a buffer array.

copy

public static int copy(java.nio.ByteBuffer res,
                       java.nio.ByteBuffer[] buffer)

Copy a buffer array to a single buffer.

clone

public static java.nio.ByteBuffer[] clone(java.nio.ByteBuffer[] buffer)

Clone a buffer array. Upon returning, the supplied buffers remain intact and a read only copy is returned.