Module kala.compress.compressors.zstandard

Package kala.compress.compressors.zstandard

Class ZstdCompressorInputStream

java.lang.Object

java.io.InputStream

kala.compress.compressors.CompressorInputStream

kala.compress.compressors.zstandard.ZstdCompressorInputStream

All Implemented Interfaces:

Closeable, AutoCloseable, InputStreamStatistics

public class ZstdCompressorInputStream
extends CompressorInputStream
implements InputStreamStatistics

CompressorInputStream implementation to decode Zstandard encoded stream. Library relies on Zstandard JNI

Since:

1.16

Field Summary

Fields

Modifier and Type	Field	Description
private final CountingInputStream	countingStream
private final com.github.luben.zstd.ZstdInputStream	decIS

Constructor Summary

Constructors

Constructor	Description
ZstdCompressorInputStream(InputStream in)
ZstdCompressorInputStream(InputStream in, com.github.luben.zstd.BufferPool bufferPool)	Creates a new input stream that decompresses zstd-compressed data from the specific input stream

Method Summary

Modifier and Type	Method	Description
int	available()
void	close()
long	getCompressedCount()	Gets the amount of raw or compressed bytes read by the stream.
void	mark(int readLimit)
boolean	markSupported()
int	read()
int	read(byte[] b)
int	read(byte[] buf, int off, int len)
void	reset()
long	skip(long n)
String	toString()

Methods inherited from class kala.compress.compressors.CompressorInputStream

count, count, getBytesRead, getUncompressedCount, pushedBackBytes

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

Methods inherited from interface kala.compress.utils.InputStreamStatistics

getUncompressedCount

Field Details

countingStream

private final CountingInputStream countingStream

decIS

private final com.github.luben.zstd.ZstdInputStream decIS

Constructor Details

ZstdCompressorInputStream

public ZstdCompressorInputStream(InputStream in)
                          throws IOException

Throws:

IOException

ZstdCompressorInputStream

public ZstdCompressorInputStream(InputStream in,
 com.github.luben.zstd.BufferPool bufferPool)
                          throws IOException

Creates a new input stream that decompresses zstd-compressed data from the specific input stream

Parameters:

in - the input stream of compressed data

bufferPool - a configuration of zstd-jni that allows users to customize how buffers are recycled. Either a NoPool or a RecyclingBufferPool is allowed here.

Throws:

IOException - if an IO error occurs.

Method Details

available

public int available()
              throws IOException

Overrides:

available in class InputStream

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Overrides:

close in class InputStream

Throws:

IOException

getCompressedCount

public long getCompressedCount()

Description copied from interface: InputStreamStatistics

Gets the amount of raw or compressed bytes read by the stream.

Specified by:

getCompressedCount in interface InputStreamStatistics

Returns:

the amount of raw or compressed bytes read by the stream.

Since:

1.17

mark

public void mark(int readLimit)

Overrides:

mark in class InputStream

markSupported

public boolean markSupported()

Overrides:

markSupported in class InputStream

read

public int read()
         throws IOException

Specified by:

read in class InputStream

Throws:

IOException

read

public int read(byte[] b)
         throws IOException

Overrides:

read in class InputStream

Throws:

IOException

read

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

Overrides:

read in class InputStream

Throws:

IOException

reset

public void reset()
           throws IOException

Overrides:

reset in class InputStream

Throws:

IOException

skip

public long skip(long n)
          throws IOException

Overrides:

skip in class InputStream

Throws:

IOException

toString

public String toString()

Overrides:

toString in class Object