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.
protected static int	readHeader(java.io.InputStream is, byte[] inputBuffer) Helper method to forcibly load header bytes that must be read before chunk can be handled.

Methods inherited from class java.lang.Object

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

Method Detail

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".

If no

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

readHeader

protected static int readHeader(java.io.InputStream is,
                                byte[] inputBuffer)
                         throws java.io.IOException

Helper method to forcibly load header bytes that must be read before chunk can be handled.

Throws:

java.io.IOException