Package com.github.luben.zstd

Class ZstdInputStream

java.lang.Object

java.io.InputStream

java.io.FilterInputStream

com.github.luben.zstd.ZstdInputStream

All Implemented Interfaces:

Closeable, AutoCloseable

public class ZstdInputStream
extends FilterInputStream

InputStream filter that decompresses the data provided by the underlying InputStream using Zstd compression. It does not support mark/reset methods

Field Summary

Fields inherited from class java.io.FilterInputStream

in

Constructor Summary

Constructors

Constructor	Description
ZstdInputStream(InputStream inStream)	create a new decompressing InputStream
ZstdInputStream(InputStream inStream, BufferPool bufferPool)	create a new decompressing InputStream

Method Summary

Modifier and Type	Method	Description
int	available()
void	close()
protected void	finalize()
boolean	getContinuous()
boolean	markSupported()
int	read()
int	read(byte[] dst, int offset, int len)
static long	recommendedDInSize()
static long	recommendedDOutSize()
ZstdInputStream	setContinuous(boolean b)	Don't break on unfinished frames Use case: decompressing files that are not yet finished writing and compressing
ZstdInputStream	setDict(byte[] dict)
ZstdInputStream	setDict(ZstdDictDecompress dict)
void	setFinalize(boolean finalize)	Deprecated. If you don't rely on finalizers, use `ZstdInputStreamNoFinalizer` instead, instances of `ZstdInputStream` will always try to close/release in the finalizer.
ZstdInputStream	setLongMax(int windowLogMax)
ZstdInputStream	setRefMultipleDDicts(boolean useMultiple)	Enable or disable support for multiple dictionary references
long	skip(long numBytes)

Methods inherited from class java.io.FilterInputStream

mark, read, reset

Methods inherited from class java.lang.Object

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

Constructor Details

ZstdInputStream

public ZstdInputStream(InputStream inStream)
                throws IOException

create a new decompressing InputStream

Parameters:

inStream - the stream to wrap

Throws:

IOException

ZstdInputStream

public ZstdInputStream(InputStream inStream,
 BufferPool bufferPool)
                throws IOException

create a new decompressing InputStream

Parameters:

inStream - the stream to wrap

bufferPool - the pool to fetch and return buffers

Throws:

IOException

Method Details

setFinalize

@Deprecated
public void setFinalize(boolean finalize)

Deprecated.

If you don't rely on finalizers, use `ZstdInputStreamNoFinalizer` instead, instances of `ZstdInputStream` will always try to close/release in the finalizer.

Enable or disable class finalizers

Parameters:

finalize - default `true` - finalizers are enabled

finalize

protected void finalize()
                 throws Throwable

Overrides:

finalize in class Object

Throws:

Throwable

recommendedDInSize

public static long recommendedDInSize()

recommendedDOutSize

public static long recommendedDOutSize()

setContinuous

public ZstdInputStream setContinuous(boolean b)

Don't break on unfinished frames Use case: decompressing files that are not yet finished writing and compressing

getContinuous

public boolean getContinuous()

setDict

public ZstdInputStream setDict(byte[] dict)
                        throws IOException

Throws:

IOException

setDict

public ZstdInputStream setDict(ZstdDictDecompress dict)
                        throws IOException

Throws:

IOException

setLongMax

public ZstdInputStream setLongMax(int windowLogMax)
                           throws IOException

Throws:

IOException

setRefMultipleDDicts

public ZstdInputStream setRefMultipleDDicts(boolean useMultiple)
                                     throws IOException

Enable or disable support for multiple dictionary references

Parameters:

useMultiple - Enables references table for DDict, so the DDict used for decompression will be determined per the dictId in the frame, default: false

Throws:

IOException

read

public int read(byte[] dst,
 int offset,
 int len)
         throws IOException

Overrides:

read in class FilterInputStream

Throws:

IOException

read

public int read()
         throws IOException

Overrides:

read in class FilterInputStream

Throws:

IOException

available

public int available()
              throws IOException

Overrides:

available in class FilterInputStream

Throws:

IOException

skip

public long skip(long numBytes)
          throws IOException

Overrides:

skip in class FilterInputStream

Throws:

IOException

markSupported

public boolean markSupported()

Overrides:

markSupported in class FilterInputStream

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Overrides:

close in class FilterInputStream

Throws:

IOException