org.jets3t.service.io

Class GZipInflatingOutputStream

java.lang.Object

java.io.OutputStream

org.jets3t.service.io.GZipInflatingOutputStream

All Implemented Interfaces:

java.io.Closeable, java.io.Flushable, java.lang.AutoCloseable, OutputStreamWrapper

public class GZipInflatingOutputStream
extends java.io.OutputStream
implements OutputStreamWrapper

Output stream that wraps another stream and inflates (de-compresses) the underlying stream's data on-the-fly. This class provides only a basic implementation of GZip functionality.

Field Summary

Fields

Modifier and Type	Field and Description
private int	BUFFER_SIZE
private java.util.zip.CRC32	crc
private int	expectedHeaderLength
private static int	FCOMMENT
private static int	FEXTRA
private static int	FHCRC
private boolean	finishedHeader
private static int	FNAME
private static int	FTEXT
static int	GZIP_MAGIC
private byte[]	headerBytes
private int	headerFlag
private int	headerLength
private int	headerOffset
private byte[]	inflatedBytes
private java.util.zip.Inflater	inflater
private java.io.OutputStream	outputStream
private byte[]	trailerBytes
private int	trailerOffset

Constructor Summary

Constructors

Constructor and Description
GZipInflatingOutputStream(java.io.OutputStream outputStream)

Method Summary

Modifier and Type	Method and Description
private long	bytesToInt(byte[] b, int offset)
private int	bytesToShort(byte[] b, int offset)
void	close()
void	flush()
java.io.OutputStream	getWrappedOutputStream()
private void	inflateData()
private void	parseHeader(byte[] b, int off, int len)
void	write(byte[] b, int off, int len)
void	write(int value)

Methods inherited from class java.io.OutputStream

write

Methods inherited from class java.lang.Object

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

Field Detail

GZIP_MAGIC

public static final int GZIP_MAGIC

See Also:

Constant Field Values

FTEXT

private static final int FTEXT

See Also:

Constant Field Values

FHCRC

private static final int FHCRC

See Also:

Constant Field Values

FEXTRA

private static final int FEXTRA

See Also:

Constant Field Values

FNAME

private static final int FNAME

See Also:

Constant Field Values

FCOMMENT

private static final int FCOMMENT

See Also:

Constant Field Values

BUFFER_SIZE

private int BUFFER_SIZE

inflater

private java.util.zip.Inflater inflater

crc

private java.util.zip.CRC32 crc

outputStream

private java.io.OutputStream outputStream

inflatedBytes

private byte[] inflatedBytes

finishedHeader

private boolean finishedHeader

headerBytes

private byte[] headerBytes

expectedHeaderLength

private int expectedHeaderLength

headerLength

private int headerLength

headerOffset

private int headerOffset

headerFlag

private int headerFlag

trailerBytes

private byte[] trailerBytes

trailerOffset

private int trailerOffset

Constructor Detail

GZipInflatingOutputStream

public GZipInflatingOutputStream(java.io.OutputStream outputStream)
                          throws java.io.IOException

Throws:

java.io.IOException

Method Detail

inflateData

private void inflateData()
                  throws java.io.IOException

Throws:

java.io.IOException

parseHeader

private void parseHeader(byte[] b,
                         int off,
                         int len)
                  throws java.io.IOException

Throws:

java.io.IOException

write

public void write(int value)
           throws java.io.IOException

Specified by:

write in class java.io.OutputStream

Throws:

java.io.IOException

write

public void write(byte[] b,
                  int off,
                  int len)
           throws java.io.IOException

Overrides:

write in class java.io.OutputStream

Throws:

java.io.IOException

flush

public void flush()
           throws java.io.IOException

Specified by:

flush in interface java.io.Flushable

Overrides:

flush in class java.io.OutputStream

Throws:

java.io.IOException

close

public void close()
           throws java.io.IOException

Specified by:

close in interface java.io.Closeable

Specified by:

close in interface java.lang.AutoCloseable

Overrides:

close in class java.io.OutputStream

Throws:

java.io.IOException

bytesToShort

private int bytesToShort(byte[] b,
                         int offset)

bytesToInt

private long bytesToInt(byte[] b,
                        int offset)

getWrappedOutputStream

public java.io.OutputStream getWrappedOutputStream()

Specified by:

getWrappedOutputStream in interface OutputStreamWrapper

Returns:

the underlying input stream wrapped by this class.