com.ning.compress.gzip

Class OptimizedGZIPInputStream

java.lang.Object

java.io.InputStream

com.ning.compress.gzip.OptimizedGZIPInputStream

All Implemented Interfaces:

Closeable, AutoCloseable

public class OptimizedGZIPInputStream
extends InputStream

Optimized variant of GZIPInputStream that reuses underlying Deflater instance}.

Field Summary

Fields

Modifier and Type	Field and Description
protected byte[]	_buffer
protected int	_bufferEnd
protected int	_bufferPtr
protected BufferRecycler	_bufferRecycler Object that handles details of buffer recycling
protected CRC32	_crc
protected GZIPRecycler	_gzipRecycler
protected Inflater	_inflater
protected InputStream	_rawInput Underlying input stream from which compressed data is to be read from.
protected com.ning.compress.gzip.OptimizedGZIPInputStream.State	_state Flag set to true during handling of header processing
protected byte[]	_tmpBuffer Temporary buffer used for single-byte reads, skipping.

Constructor Summary

Constructors

Constructor and Description
OptimizedGZIPInputStream(InputStream in)
OptimizedGZIPInputStream(InputStream in, BufferRecycler bufferRecycler, GZIPRecycler gzipRecycler)

Method Summary

Methods

Modifier and Type	Method and Description
protected byte[]	_getTmpBuffer()
protected void	_readHeader()
protected void	_readTrailer()
int	available()
void	close()
void	mark(int limit)
boolean	markSupported()
int	read()
int	read(byte[] buf)
int	read(byte[] buf, int offset, int len)
void	reset()
long	skip(long n)

Methods inherited from class java.lang.Object

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

Field Detail

_inflater

protected Inflater _inflater

_crc

protected final CRC32 _crc

_bufferRecycler

protected final BufferRecycler _bufferRecycler

Object that handles details of buffer recycling

_gzipRecycler

protected final GZIPRecycler _gzipRecycler

_buffer

protected byte[] _buffer

_bufferPtr

protected int _bufferPtr

_bufferEnd

protected int _bufferEnd

_tmpBuffer

protected byte[] _tmpBuffer

Temporary buffer used for single-byte reads, skipping.

_rawInput

protected InputStream _rawInput

Underlying input stream from which compressed data is to be read from.

_state

protected com.ning.compress.gzip.OptimizedGZIPInputStream.State _state

Flag set to true during handling of header processing

Constructor Detail

OptimizedGZIPInputStream

public OptimizedGZIPInputStream(InputStream in)
                         throws IOException

Throws:

IOException

OptimizedGZIPInputStream

public OptimizedGZIPInputStream(InputStream in,
                        BufferRecycler bufferRecycler,
                        GZIPRecycler gzipRecycler)
                         throws IOException

Throws:

IOException

Method Detail

available

public int available()

Overrides:

available in class InputStream

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Overrides:

close in class InputStream

Throws:

IOException

mark

public void mark(int limit)

Overrides:

mark in class InputStream

markSupported

public boolean markSupported()

Overrides:

markSupported in class InputStream

read

public final int read()
               throws IOException

Specified by:

read in class InputStream

Throws:

IOException

read

public final int read(byte[] buf)
               throws IOException

Overrides:

read in class InputStream

Throws:

IOException

read

public final int read(byte[] buf,
       int offset,
       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

_getTmpBuffer

protected byte[] _getTmpBuffer()

_readHeader

protected final void _readHeader()
                          throws IOException

Throws:

IOException

_readTrailer

protected final void _readTrailer()
                           throws IOException

Throws:

IOException