Top Description Fields Constructors Methods

com.ning.compress.lzf

public Class LZFChunk

Class Inheritance

extends Object

java.lang.Object
com.ning.compress.lzf.LZFChunk

Imports

Helper class used to store LZF encoded segments (compressed and non-compressed) that can be sequenced to produce LZF files/streams.

Author: Tatu Saloranta

Field Summary

Modifier and Type	Field and Description
protected final byte[]	_data
protected LZFChunk	_next
public static final int	BLOCK_TYPE_COMPRESSED
public static final int	BLOCK_TYPE_NON_COMPRESSED
public static final byte	BYTE_V
public static final byte	BYTE_Z
public static final int	HEADER_LEN_COMPRESSED
public static final int	HEADER_LEN_NOT_COMPRESSED
public static final int	MAX_CHUNK_LEN Chunk length is limited by 2-byte length indicator, to 64k
public static final int	MAX_HEADER_LEN Header can be either 7 bytes (compressed) or 5 bytes (uncompressed) long
public static final int	MAX_LITERAL Maximum length of literal run for LZF encoding.

Constructor Summary

Access	Constructor and Description
private	LZFChunk(byte[] data)

Method Summary

Modifier and Type	Method and Description
public static int	appendCompressedHeader(int origLen, int encLen, byte[] headerBuffer, int offset)
public static int	appendNonCompressed(byte[] plainData, int ptr, int len, byte[] outputBuffer, int outputPtr) Method for appending specific content as non-compressed chunk, in given buffer.
public static int	appendNonCompressedHeader(int len, byte[] headerBuffer, int offset)
public int	copyTo(byte[] dst, int ptr)
public static LZFChunk	createCompressed(int origLen, byte[] encData, int encPtr, int encLen) Factory method for constructing compressed chunk
public static LZFChunk	createNonCompressed(byte[] plainData, int ptr, int len) Factory method for constructing compressed chunk
public byte[]	getData()
public int	length()
public LZFChunk	next()
public void	setNext(LZFChunk next)
public static void	writeCompressedHeader(int origLen, int encLen, OutputStream out, byte[] headerBuffer)
public static void	writeNonCompressedHeader(int len, OutputStream out, byte[] headerBuffer)

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Field Detail

_data	back to summary
protected final byte[] _data

_next	back to summary
protected LZFChunk _next

BLOCK_TYPE_COMPRESSED	back to summary
public static final int BLOCK_TYPE_COMPRESSED

BLOCK_TYPE_NON_COMPRESSED	back to summary
public static final int BLOCK_TYPE_NON_COMPRESSED

BYTE_V	back to summary
public static final byte BYTE_V

BYTE_Z	back to summary
public static final byte BYTE_Z

HEADER_LEN_COMPRESSED	back to summary
public static final int HEADER_LEN_COMPRESSED

HEADER_LEN_NOT_COMPRESSED	back to summary
public static final int HEADER_LEN_NOT_COMPRESSED

MAX_CHUNK_LEN	back to summary
public static final int MAX_CHUNK_LEN Chunk length is limited by 2-byte length indicator, to 64k

MAX_HEADER_LEN	back to summary
public static final int MAX_HEADER_LEN Header can be either 7 bytes (compressed) or 5 bytes (uncompressed) long

MAX_LITERAL	back to summary
public static final int MAX_LITERAL Maximum length of literal run for LZF encoding.

Constructor Detail

LZFChunk	back to summary
private LZFChunk(byte[] data)

Method Detail

appendCompressedHeader	back to summary
public static int appendCompressedHeader(int origLen, int encLen, byte[] headerBuffer, int offset)

appendNonCompressed	back to summary
public static int appendNonCompressed(byte[] plainData, int ptr, int len, byte[] outputBuffer, int outputPtr) Method for appending specific content as non-compressed chunk, in given buffer.

appendNonCompressedHeader	back to summary
public static int appendNonCompressedHeader(int len, byte[] headerBuffer, int offset)

copyTo	back to summary
public int copyTo(byte[] dst, int ptr)

createCompressed	back to summary
public static LZFChunk createCompressed(int origLen, byte[] encData, int encPtr, int encLen) Factory method for constructing compressed chunk

createNonCompressed	back to summary
public static LZFChunk createNonCompressed(byte[] plainData, int ptr, int len) Factory method for constructing compressed chunk

getData	back to summary
public byte[] getData()

length	back to summary
public int length()

next	back to summary
public LZFChunk next()

setNext	back to summary
public void setNext(LZFChunk next)

writeCompressedHeader	back to summary
public static void writeCompressedHeader(int origLen, int encLen, OutputStream out, byte[] headerBuffer) throws IOException

writeNonCompressedHeader	back to summary
public static void writeNonCompressedHeader(int len, OutputStream out, byte[] headerBuffer) throws IOException