com.ning.compress.lzf.impl

Class VanillaChunkDecoder

java.lang.Object

com.ning.compress.lzf.ChunkDecoder

com.ning.compress.lzf.impl.VanillaChunkDecoder

public class VanillaChunkDecoder
extends ChunkDecoder

Safe ChunkDecoder implementation that can be used on any platform.

Field Summary

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

BYTE_NULL, HEADER_BYTES

Constructor Summary

Constructors

Constructor and Description
VanillaChunkDecoder()

Method Summary

Methods

Modifier and Type	Method and Description
protected static void	copyUpTo32WithSwitch(byte[] in, int inPos, byte[] out, int outPos, int lengthMinusOne)
void	decodeChunk(byte[] in, int inPos, byte[] out, int outPos, int outEnd) Main decode method for individual chunks.
int	decodeChunk(InputStream is, byte[] inputBuffer, byte[] outputBuffer) Main decode from a stream.
int	skipOrDecodeChunk(InputStream is, byte[] inputBuffer, byte[] outputBuffer, long maxToSkip)

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

_reportArrayOverflow, _reportCorruptHeader, calculateUncompressedSize, decode, decode, decode, decode, readFully, readHeader, skipFully, uint16

Methods inherited from class java.lang.Object

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

Constructor Detail

VanillaChunkDecoder

public VanillaChunkDecoder()

Method Detail

decodeChunk

public final int decodeChunk(InputStream is,
              byte[] inputBuffer,
              byte[] outputBuffer)
                      throws IOException

Description copied from class: ChunkDecoder

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

Specified by:

decodeChunk in class ChunkDecoder

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:

IOException

decodeChunk

public final void decodeChunk(byte[] in,
               int inPos,
               byte[] out,
               int outPos,
               int outEnd)
                       throws LZFException

Description copied from class: ChunkDecoder

Main decode method for individual chunks.

Specified by:

decodeChunk in class ChunkDecoder

Throws:

LZFException

skipOrDecodeChunk

public int skipOrDecodeChunk(InputStream is,
                    byte[] inputBuffer,
                    byte[] outputBuffer,
                    long maxToSkip)
                      throws IOException

Specified by:

skipOrDecodeChunk in class ChunkDecoder

Returns:

If positive number, number of bytes skipped; if -1, end-of-stream was reached; otherwise, amount of content decoded (using formula of returnValue = -(decodedAmount + 2))

Throws:

IOException

copyUpTo32WithSwitch

protected static final void copyUpTo32WithSwitch(byte[] in,
                        int inPos,
                        byte[] out,
                        int outPos,
                        int lengthMinusOne)