Package org.codehaus.plexus.digest

Class AbstractDigester

java.lang.Object

org.codehaus.plexus.digest.AbstractDigester

All Implemented Interfaces:

Digester

Direct Known Subclasses:

Md5Digester, Sha1Digester, Sha256Digester

public abstract class AbstractDigester
extends Object
implements Digester

Create a digest for a file.

Author:

Brett Porter

Field Summary

Fields inherited from interface org.codehaus.plexus.digest.Digester

ROLE

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AbstractDigester(StreamingDigester streamingDigester)	Constructor for AbstractDigester.

Method Summary

Modifier and Type	Method	Description
String	calc(File file)	Calculate a checksum for a file.
String	getAlgorithm()	getAlgorithm.
String	toString()	toString.
void	verify(File file, String checksum)	Verify that a checksum is correct.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.codehaus.plexus.digest.Digester

getFilenameExtension

Constructor Details

AbstractDigester

protected AbstractDigester(StreamingDigester streamingDigester)

Constructor for AbstractDigester.

Parameters:

streamingDigester - a StreamingDigester object.

Method Details

getAlgorithm

public String getAlgorithm()

getAlgorithm.

Specified by:

getAlgorithm in interface Digester

Returns:

a String object.

calc

public String calc(File file)
            throws DigesterException

Calculate a checksum for a file.

Specified by:

calc in interface Digester

Parameters:

file - the file to calculate the checksum for

Returns:

the current checksum.

Throws:

DigesterException - if there was a problem computing the hashcode.

verify

public void verify(File file,
 String checksum)
            throws DigesterException

Verify that a checksum is correct.

Specified by:

verify in interface Digester

Parameters:

file - the file to compute the checksum for

checksum - the checksum to compare to

Throws:

DigesterException - if there was a problem computing the hashcode.

toString

public String toString()

toString.

Overrides:

toString in class Object

Returns:

a String object.