org.elasticsearch.common.compress.lzf
Class LZFDecoder

java.lang.Object
  org.elasticsearch.common.compress.lzf.LZFDecoder

public class LZFDecoder
extends java.lang.Object

Decoder that handles decoding of sequence of encoded LZF chunks, combining them into a single contiguous result byte array

Method Summary

static byte[]	decode(byte[] sourceBuffer)
static int	decode(byte[] sourceBuffer, byte[] targetBuffer) Method for decompressing whole input data, which encoded in LZF block structure (compatible with lzf command line utility), and can consist of any number of blocks
static void	decompressChunk(byte[] in, int inPos, byte[] out, int outPos, int outEnd) Main decode method for individual chunks.
static int	decompressChunk(java.io.InputStream is, byte[] inputBuffer, byte[] outputBuffer) Main decode from a stream.
static boolean	isCompressed(byte[] buffer)

Methods inherited from class java.lang.Object

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

Method Detail

isCompressed

public static boolean isCompressed(byte[] buffer)

decode

public static byte[] decode(byte[] sourceBuffer)
                     throws java.io.IOException

Throws:

java.io.IOException

decode

public static int decode(byte[] sourceBuffer,
                         byte[] targetBuffer)
                  throws java.io.IOException

Method for decompressing whole input data, which encoded in LZF block structure (compatible with lzf command line utility), and can consist of any number of blocks

Throws:

java.io.IOException

decompressChunk

public static int decompressChunk(java.io.InputStream is,
                                  byte[] inputBuffer,
                                  byte[] outputBuffer)
                           throws java.io.IOException

Main decode from a stream. Decompressed bytes are placed in the outputBuffer, inputBuffer is a "scratch-area".

Parameters:

is - An input stream of LZF compressed bytes

inputBuffer - A byte array used as a scratch area.

outputBuffer - A byte array in which the result is returned

Returns:

The number of bytes placed in the outputBuffer.

Throws:

java.io.IOException

decompressChunk

public static void decompressChunk(byte[] in,
                                   int inPos,
                                   byte[] out,
                                   int outPos,
                                   int outEnd)
                            throws java.io.IOException

Main decode method for individual chunks.

Throws:

java.io.IOException