org.apache.commons.compress.compressors.snappy

Class FramedSnappyCompressorInputStream

java.lang.Object

java.io.InputStream

org.apache.commons.compress.compressors.CompressorInputStream

org.apache.commons.compress.compressors.snappy.FramedSnappyCompressorInputStream

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

public class FramedSnappyCompressorInputStream
extends CompressorInputStream

CompressorInputStream for the framing Snappy format.

Based on the "spec" in the version "Last revised: 2013-10-25"

Since:

1.7

See Also:

Snappy framing format description

Constructor Summary

Constructors

Constructor and Description
FramedSnappyCompressorInputStream(java.io.InputStream in) Constructs a new input stream that decompresses snappy-framed-compressed data from the specified input stream.

Method Summary

Modifier and Type	Method and Description
int	available()
void	close()
static boolean	matches(byte[] signature, int length) Checks if the signature matches what is expected for a .sz file.
int	read()
int	read(byte[] b, int off, int len)

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

count, count, getBytesRead, getCount, pushedBackBytes

Methods inherited from class java.io.InputStream

mark, markSupported, read, reset, skip

Methods inherited from class java.lang.Object

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

Constructor Detail

FramedSnappyCompressorInputStream

public FramedSnappyCompressorInputStream(java.io.InputStream in)
                                  throws java.io.IOException

Constructs a new input stream that decompresses snappy-framed-compressed data from the specified input stream.

Parameters:

in - the InputStream from which to read the compressed data

Throws:

java.io.IOException

Method Detail

read

public int read()
         throws java.io.IOException

Specified by:

read in class java.io.InputStream

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.InputStream

Throws:

java.io.IOException

read

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

Overrides:

read in class java.io.InputStream

Throws:

java.io.IOException

available

public int available()
              throws java.io.IOException

Overrides:

available in class java.io.InputStream

Throws:

java.io.IOException

matches

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

Checks if the signature matches what is expected for a .sz file.

.sz files start with a chunk with tag 0xff and content sNaPpY.

Parameters:

signature - the bytes to check

length - the number of bytes to check

Returns:

true if this is a .sz stream, false otherwise