Package gov.usgs.earthquake.distribution

Class DeflateComparison

java.lang.Object

gov.usgs.earthquake.distribution.DeflateComparison

public class DeflateComparison
extends Object

Deflate an input stream.

Constructor Summary

Constructors

Constructor	Description
DeflateComparison()

Method Summary

Modifier and Type	Method	Description
long	deflateStream(int level, InputStream in)	Deflate an input stream.
protected void	formatResult(long totalBytes, long transferredBytes, long elapsedTime)	For calculating for properly formatting the results
static void	main(String[] args)	A main method for accessing tests using custom files.
void	testByteArray(String name, byte[] content)	Test different compression levels and speeds for a byte array.
void	testFile(File file)	Test different compression levels and speeds for a file.
long	transferStream(InputStream in)	Transfer an input stream.

Methods inherited from class java.lang.Object

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

Constructor Details

DeflateComparison

public DeflateComparison()

Method Details

deflateStream

public long deflateStream(int level,
 InputStream in)
                   throws IOException

Deflate an input stream.

Parameters:

level - deflate level.

in - input stream to deflate.

Returns:

output length in bytes.

Throws:

IOException - if IO error occurs

transferStream

public long transferStream(InputStream in)
                    throws IOException

Transfer an input stream.

Parameters:

in - input stream to transfer.

Returns:

output length in bytes.

Throws:

IOException - if IO error occurs

testFile

public void testFile(File file)
              throws IllegalArgumentException,
IOException

Test different compression levels and speeds for a file. Reads file into memory to avoid disk io overhead.

Parameters:

file - file to test.

Throws:

IllegalArgumentException - if illegal arg

IOException - if IO error occurs

testByteArray

public void testByteArray(String name,
 byte[] content)
                   throws IOException

Test different compression levels and speeds for a byte array.

Parameters:

name - given name

content - content to test.

Throws:

IllegalArgumentException - if illegal arg

IOException - if IO error occurs

formatResult

protected void formatResult(long totalBytes,
 long transferredBytes,
 long elapsedTime)

For calculating for properly formatting the results

Parameters:

totalBytes - totalBytes

transferredBytes - Bytes transferred

elapsedTime - total elapsed time

main

public static void main(String[] args)
                 throws Exception

A main method for accessing tests using custom files.

Parameters:

args - a list of files or directorys to include in compression comparison.

Throws:

Exception - if error occurs