Package org.xerial.snappy

Class SnappyCodec

java.lang.Object

org.xerial.snappy.SnappyCodec

public class SnappyCodec
extends java.lang.Object

Preamble header for SnappyOutputStream.

The magic header is the following 8 bytes data:

 -126, 'S', 'N', 'A', 'P', 'P', 'Y', 0
 

Field Summary

Fields

Modifier and Type	Field	Description
int	compatibleVersion
static SnappyCodec	currentHeader
static int	DEFAULT_VERSION
static int	HEADER_SIZE
byte[]	magic
static int	MAGIC_HEADER_HEAD
static int	MAGIC_LEN
static int	MINIMUM_COMPATIBLE_VERSION
int	version

Method Summary

Modifier and Type	Method	Description
static byte[]	getMagicHeader()
static boolean	hasMagicHeaderPrefix(byte[] b)
static int	headerSize()
boolean	isValidMagicHeader()
static SnappyCodec	readHeader(java.io.InputStream in)
java.lang.String	toString()
int	writeHeader(byte[] dst, int dstOffset)
int	writeHeader(java.io.OutputStream out)

Methods inherited from class java.lang.Object

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

Field Detail

MAGIC_LEN

public static final int MAGIC_LEN

HEADER_SIZE

public static final int HEADER_SIZE

MAGIC_HEADER_HEAD

public static final int MAGIC_HEADER_HEAD

DEFAULT_VERSION

public static final int DEFAULT_VERSION

See Also:

Constant Field Values

MINIMUM_COMPATIBLE_VERSION

public static final int MINIMUM_COMPATIBLE_VERSION

See Also:

Constant Field Values

currentHeader

public static final SnappyCodec currentHeader

magic

public final byte[] magic

version

public final int version

compatibleVersion

public final int compatibleVersion

Method Detail

getMagicHeader

public static byte[] getMagicHeader()

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

headerSize

public static int headerSize()

writeHeader

public int writeHeader(byte[] dst,
                       int dstOffset)

writeHeader

public int writeHeader(java.io.OutputStream out)
                throws java.io.IOException

Throws:

java.io.IOException

isValidMagicHeader

public boolean isValidMagicHeader()

hasMagicHeaderPrefix

public static boolean hasMagicHeaderPrefix(byte[] b)

readHeader

public static SnappyCodec readHeader(java.io.InputStream in)
                              throws java.io.IOException

Throws:

java.io.IOException