Package org.apache.commons.compress.compressors.deflate

Class DeflateCompressorInputStream

java.lang.Object

java.io.InputStream

org.apache.commons.compress.compressors.CompressorInputStream

org.apache.commons.compress.compressors.deflate.DeflateCompressorInputStream

All Implemented Interfaces:

Closeable, AutoCloseable, InputStreamStatistics

public class DeflateCompressorInputStream
extends CompressorInputStream
implements InputStreamStatistics

Deflate decompressor.

Since:

1.9

Field Summary

Fields

Modifier and Type	Field	Description
private final org.apache.commons.io.input.BoundedInputStream	countingStream
private final InputStream	in
private final Inflater	inflater
private static final int	MAGIC_1
private static final int	MAGIC_2a
private static final int	MAGIC_2b
private static final int	MAGIC_2c
private static final int	MAGIC_2d

Constructor Summary

Constructors

Constructor	Description
DeflateCompressorInputStream(InputStream inputStream)	Creates a new input stream that decompresses Deflate-compressed data from the specified input stream.
DeflateCompressorInputStream(InputStream inputStream, DeflateParameters parameters)	Creates a new input stream that decompresses Deflate-compressed data from the specified 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.
static boolean	matches(byte[] signature, int length)	Checks if the signature matches what is expected for a zlib / deflated file with the zlib header.
int	read()
int	read(byte[] buf, int off, int len)
long	skip(long n)

Methods inherited from class org.apache.commons.compress.compressors.CompressorInputStream

count, count, getBytesRead, getCount, getUncompressedCount, pushedBackBytes

Methods inherited from class java.io.InputStream

mark, markSupported, read, reset

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.commons.compress.utils.InputStreamStatistics

getUncompressedCount

Field Details

MAGIC_1

private static final int MAGIC_1

See Also:

• Constant Field Values

MAGIC_2a

private static final int MAGIC_2a

See Also:

• Constant Field Values

MAGIC_2b

private static final int MAGIC_2b

See Also:

• Constant Field Values

MAGIC_2c

private static final int MAGIC_2c

See Also:

• Constant Field Values

MAGIC_2d

private static final int MAGIC_2d

See Also:

• Constant Field Values

countingStream

private final org.apache.commons.io.input.BoundedInputStream countingStream

in

private final InputStream in

inflater

private final Inflater inflater

Constructor Details

DeflateCompressorInputStream

public DeflateCompressorInputStream(InputStream inputStream)

Creates a new input stream that decompresses Deflate-compressed data from the specified input stream.

Parameters:

inputStream - where to read the compressed data

DeflateCompressorInputStream

public DeflateCompressorInputStream(InputStream inputStream,
 DeflateParameters parameters)

Creates a new input stream that decompresses Deflate-compressed data from the specified input stream.

Parameters:

inputStream - where to read the compressed data

parameters - parameters

Method Details

matches

public static boolean matches(byte[] signature,
 int length)

Checks if the signature matches what is expected for a zlib / deflated file with the zlib header.

Parameters:

signature - the bytes to check

length - the number of bytes to check

Returns:

true, if this stream is zlib / deflate compressed with a header stream, false otherwise

Since:

1.10

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

read

public int read()
         throws IOException

Specified by:

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

skip

public long skip(long n)
          throws IOException

Overrides:

skip in class InputStream

Throws:

IOException