org.jruby.util

Class CRC32Ext

java.lang.Object

org.jruby.util.CRC32Ext

All Implemented Interfaces:

Checksum

public class CRC32Ext
extends Object
implements Checksum

This class is a wrapper around Adler32 which provides the capability to update the running total. This functionality is provided by quite risky reflection and should be fixed in a better way later on.

Constructor Summary

Constructors

Constructor and Description
CRC32Ext() Creates the basic object with default initial adler.
CRC32Ext(int crc) Creates the basic object with the adler provided.

Method Summary

Methods

Modifier and Type	Method and Description
long	getValue()
void	reset()
void	setAdler(int crc) Sets the adler running total to the specified value.
void	update(byte[] b)
void	update(byte[] b, int off, int len)
void	update(int b)

Methods inherited from class java.lang.Object

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

Constructor Detail

CRC32Ext

public CRC32Ext()

Creates the basic object with default initial adler.

CRC32Ext

public CRC32Ext(int crc)

Creates the basic object with the adler provided.

Parameters:

adler - the number to use as starting point for the CRC-32 algorithm

Method Detail

setAdler

public void setAdler(int crc)

Sets the adler running total to the specified value.

Parameters:

adler - the number to use as current value for the CRC-32 algorithm

update

public void update(int b)

Specified by:

update in interface Checksum

See Also:

Checksum.update(int)

update

public void update(byte[] b,
          int off,
          int len)

Specified by:

update in interface Checksum

See Also:

Checksum.update(int)

update

public void update(byte[] b)

See Also:

Checksum.update(int)

reset

public void reset()

Specified by:

reset in interface Checksum

See Also:

Checksum.reset()

getValue

public long getValue()

Specified by:

getValue in interface Checksum

See Also:

Checksum.getValue()