com.ning.compress.lzf.impl

Class UnsafeChunkEncoderLE

java.lang.Object

com.ning.compress.lzf.ChunkEncoder

com.ning.compress.lzf.impl.UnsafeChunkEncoder

com.ning.compress.lzf.impl.UnsafeChunkEncoderLE

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

public class UnsafeChunkEncoderLE
extends UnsafeChunkEncoder

Implementation to use on Little Endian architectures.

Field Summary

Fields inherited from class com.ning.compress.lzf.impl.UnsafeChunkEncoder

BYTE_ARRAY_OFFSET, BYTE_ARRAY_OFFSET_PLUS2, unsafe

Fields inherited from class com.ning.compress.lzf.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

Constructor and Description
UnsafeChunkEncoderLE(int totalLength)
UnsafeChunkEncoderLE(int totalLength, boolean bogus)
UnsafeChunkEncoderLE(int totalLength, BufferRecycler bufferRecycler)
UnsafeChunkEncoderLE(int totalLength, BufferRecycler bufferRecycler, boolean bogus)

Method Summary

Modifier and Type	Method and Description
private static int	_findLongMatchLength(byte[] in, int ptr1, int ptr2, int maxPtr1)
private static int	_findMatchLength(byte[] in, int ptr1, int ptr2, int maxPtr1)
private static int	_getInt(byte[] in, int inPos)
private static int	_leadingBytes(int i1, int i2)
private static int	_leadingBytes(long l1, long l2)
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 com.ning.compress.lzf.impl.UnsafeChunkEncoder

_copyFullLiterals, _copyLongLiterals, _copyPartialLiterals, _findTailMatchLength, _handleTail

Methods inherited from class com.ning.compress.lzf.ChunkEncoder

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

Methods inherited from class java.lang.Object

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

Constructor Detail

UnsafeChunkEncoderLE

public UnsafeChunkEncoderLE(int totalLength)

UnsafeChunkEncoderLE

public UnsafeChunkEncoderLE(int totalLength,
                            boolean bogus)

UnsafeChunkEncoderLE

public UnsafeChunkEncoderLE(int totalLength,
                            BufferRecycler bufferRecycler)

UnsafeChunkEncoderLE

public UnsafeChunkEncoderLE(int totalLength,
                            BufferRecycler bufferRecycler,
                            boolean bogus)

Method Detail

tryCompress

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

Description copied from class: ChunkEncoder

Main workhorse method that will try to compress given chunk, and return end position (offset to byte after last included byte). Result will be "raw" encoded contents without chunk header information: caller is responsible for prepending header, if it chooses to use encoded data; it may also choose to instead create an uncompressed chunk.

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)

_getInt

private static final int _getInt(byte[] in,
                                 int inPos)

_findMatchLength

private static final int _findMatchLength(byte[] in,
                                          int ptr1,
                                          int ptr2,
                                          int maxPtr1)

_findLongMatchLength

private static final int _findLongMatchLength(byte[] in,
                                              int ptr1,
                                              int ptr2,
                                              int maxPtr1)

_leadingBytes

private static final int _leadingBytes(int i1,
                                       int i2)

_leadingBytes

private static final int _leadingBytes(long l1,
                                       long l2)