Package net.jpountz.lz4

Class LZ4BlockInputStream

java.lang.Object

java.io.InputStream

java.io.FilterInputStream

net.jpountz.lz4.LZ4BlockInputStream

All Implemented Interfaces:

Closeable, AutoCloseable

public class LZ4BlockInputStream
extends FilterInputStream

InputStream implementation to decode data written with LZ4BlockOutputStream. This class is not thread-safe and does not support mark(int)/reset().

See Also:

• LZ4BlockOutputStream

Field Summary

Fields inherited from class java.io.FilterInputStream

in

Constructor Summary

Constructors

Constructor	Description
LZ4BlockInputStream(InputStream in)	Creates a new LZ4 input stream to read from the specified underlying InputStream, using XXHash32 for checksuming.
LZ4BlockInputStream(InputStream in, boolean stopOnEmptyBlock)	Creates a new LZ4 input stream to read from the specified underlying InputStream, using XXHash32 for checksuming.
LZ4BlockInputStream(InputStream in, LZ4FastDecompressor decompressor)	Creates a new LZ4 input stream to read from the specified underlying InputStream, using XXHash32 for checksuming.
LZ4BlockInputStream(InputStream in, LZ4FastDecompressor decompressor, Checksum checksum)	Creates a new LZ4 input stream to read from the specified underlying InputStream.
LZ4BlockInputStream(InputStream in, LZ4FastDecompressor decompressor, Checksum checksum, boolean stopOnEmptyBlock)	Creates a new LZ4 input stream to read from the specified underlying InputStream.

Method Summary

Modifier and Type	Method	Description
int	available()
void	mark(int readlimit)
boolean	markSupported()
int	read()
int	read(byte[] b)
int	read(byte[] b, int off, int len)
void	reset()
long	skip(long n)
String	toString()

Methods inherited from class java.io.FilterInputStream

close

Methods inherited from class java.io.InputStream

nullInputStream, readAllBytes, readNBytes, readNBytes, skipNBytes, transferTo

Methods inherited from class java.lang.Object

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

Constructor Details

LZ4BlockInputStream

public LZ4BlockInputStream(InputStream in,
 LZ4FastDecompressor decompressor,
 Checksum checksum,
 boolean stopOnEmptyBlock)

Creates a new LZ4 input stream to read from the specified underlying InputStream.

Parameters:

in - the InputStream to poll

decompressor - the decompressor instance to use

checksum - the Checksum instance to use, must be equivalent to the instance which has been used to write the stream

stopOnEmptyBlock - whether read is stopped on an empty block

LZ4BlockInputStream

public LZ4BlockInputStream(InputStream in,
 LZ4FastDecompressor decompressor,
 Checksum checksum)

Creates a new LZ4 input stream to read from the specified underlying InputStream.

Parameters:

in - the InputStream to poll

decompressor - the decompressor instance to use

checksum - the Checksum instance to use, must be equivalent to the instance which has been used to write the stream

See Also:

• LZ4BlockInputStream(InputStream, LZ4FastDecompressor, Checksum, boolean)

LZ4BlockInputStream

public LZ4BlockInputStream(InputStream in,
 LZ4FastDecompressor decompressor)

Creates a new LZ4 input stream to read from the specified underlying InputStream, using XXHash32 for checksuming.

Parameters:

in - the InputStream to poll

decompressor - the decompressor instance to use

See Also:

• LZ4BlockInputStream(InputStream, LZ4FastDecompressor, Checksum, boolean)
• StreamingXXHash32.asChecksum()

LZ4BlockInputStream

public LZ4BlockInputStream(InputStream in,
 boolean stopOnEmptyBlock)

Creates a new LZ4 input stream to read from the specified underlying InputStream, using XXHash32 for checksuming.

Parameters:

in - the InputStream to poll

stopOnEmptyBlock - whether read is stopped on an empty block

See Also:

• LZ4BlockInputStream(InputStream, LZ4FastDecompressor, Checksum, boolean)
• LZ4Factory.fastestInstance()
• StreamingXXHash32.asChecksum()

LZ4BlockInputStream

public LZ4BlockInputStream(InputStream in)

Creates a new LZ4 input stream to read from the specified underlying InputStream, using XXHash32 for checksuming.

Parameters:

in - the InputStream to poll

See Also:

• LZ4BlockInputStream(InputStream, LZ4FastDecompressor)
• LZ4Factory.fastestInstance()

Method Details

available

public int available()
              throws IOException

Overrides:

available in class FilterInputStream

Throws:

IOException

read

public int read()
         throws IOException

Overrides:

read in class FilterInputStream

Throws:

IOException

read

public int read(byte[] b,
 int off,
 int len)
         throws IOException

Overrides:

read in class FilterInputStream

Throws:

IOException

read

public int read(byte[] b)
         throws IOException

Overrides:

read in class FilterInputStream

Throws:

IOException

skip

public long skip(long n)
          throws IOException

Overrides:

skip in class FilterInputStream

Throws:

IOException

markSupported

public boolean markSupported()

Overrides:

markSupported in class FilterInputStream

mark

public void mark(int readlimit)

Overrides:

mark in class FilterInputStream

reset

public void reset()
           throws IOException

Overrides:

reset in class FilterInputStream

Throws:

IOException

toString

public String toString()

Overrides:

toString in class Object