Class VanillaChunkEncoder

java.lang.Object

com.ning.compress.lzf.ChunkEncoder

com.ning.compress.lzf.impl.VanillaChunkEncoder

All Implemented Interfaces:

Closeable, AutoCloseable

public class VanillaChunkEncoder
extends ChunkEncoder

Field Summary

Fields inherited from class ChunkEncoder

_encodeBuffer, _hashModulo, _hashTable, _headerBuffer, _recycler, MAX_HASH_SIZE, MAX_OFF, MAX_REF, MIN_BLOCK_TO_COMPRESS, MIN_HASH_SIZE, TAIL_LENGTH

Constructor Summary

Constructors

Modifier	Constructor	Description
	VanillaChunkEncoder(int totalLength)
protected	VanillaChunkEncoder(int totalLength, boolean bogus)	Alternate constructor used when we want to avoid allocation encoding buffer, in cases where caller wants full control over allocations.
	VanillaChunkEncoder(int totalLength, BufferRecycler bufferRecycler)
protected	VanillaChunkEncoder(int totalLength, BufferRecycler bufferRecycler, boolean bogus)	Alternate constructor used when we want to avoid allocation encoding buffer, in cases where caller wants full control over allocations.

Method Summary

Modifier and Type	Method	Description
private final int	_handleTail(byte[] in, int inPos, int inEnd, byte[] out, int outPos, int literals)
private final int	first(byte[] in, int inPos)
static VanillaChunkEncoder	nonAllocatingEncoder(int totalLength)
static VanillaChunkEncoder	nonAllocatingEncoder(int totalLength, BufferRecycler bufferRecycler)
protected int	tryCompress(byte[] in, int inPos, int inEnd, byte[] out, int outPos)	Main workhorse method that will try to compress given chunk, and return end position (offset to byte after last included byte)

Methods inherited from class ChunkEncoder

appendEncodedChunk, appendEncodedIfCompresses, close, encodeAndWriteChunk, encodeAndWriteChunkIfCompresses, encodeChunk, encodeChunkIfCompresses, getBufferRecycler, hash

Methods inherited from class Object

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

Constructor Details

VanillaChunkEncoder

public VanillaChunkEncoder(int totalLength)

Parameters:

totalLength - Total encoded length; used for calculating size of hash table to use

VanillaChunkEncoder

protected VanillaChunkEncoder(int totalLength,
 boolean bogus)

Alternate constructor used when we want to avoid allocation encoding buffer, in cases where caller wants full control over allocations.

VanillaChunkEncoder

public VanillaChunkEncoder(int totalLength,
 BufferRecycler bufferRecycler)

Parameters:

totalLength - Total encoded length; used for calculating size of hash table to use

bufferRecycler - The BufferRecycler instance

VanillaChunkEncoder

protected VanillaChunkEncoder(int totalLength,
 BufferRecycler bufferRecycler,
 boolean bogus)

Alternate constructor used when we want to avoid allocation encoding buffer, in cases where caller wants full control over allocations.

Method Details

nonAllocatingEncoder

public static VanillaChunkEncoder nonAllocatingEncoder(int totalLength)

nonAllocatingEncoder

public static VanillaChunkEncoder nonAllocatingEncoder(int totalLength,
 BufferRecycler bufferRecycler)

tryCompress

protected int tryCompress(byte[] in,
 int inPos,
 int inEnd,
 byte[] out,
 int outPos)

Main workhorse method that will try to compress given chunk, and return end position (offset to byte after last included byte)

Specified by:

tryCompress in class ChunkEncoder

Returns:

Output pointer after handling content, such that result - originalOutPost is the actual length of compressed chunk (without header)

_handleTail

private final int _handleTail(byte[] in,
 int inPos,
 int inEnd,
 byte[] out,
 int outPos,
 int literals)

first

private final int first(byte[] in,
 int inPos)