net.covers1624.quack.util

Class MultiHasher

java.lang.Object

net.covers1624.quack.util.MultiHasher

public class MultiHasher
extends java.lang.Object

Capable of creating multiple HashCodes from an input.

Created by covers1624 on 15/2/21.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	MultiHasher.HashFunc Represents a HashFunction.
static class	MultiHasher.HashResult Represents a completed result from this MultiHasher.

Constructor Summary

Constructors

Constructor and Description
MultiHasher(java.util.Collection<MultiHasher.HashFunc> hashFunctions)
MultiHasher(MultiHasher.HashFunc... hashFunctions)

Method Summary

Modifier and Type	Method and Description
MultiHasher.HashResult	finish() Finishes this MultiHasher, returning a MultiHasher.HashResult result.
void	load(java.io.InputStream is) Loads the content of the given InputStream into the MultiHasher.
void	load(java.nio.file.Path path) Loads the content of the provided Path into the MultiHasher.
void	update(byte[] bytes) Appends the given bytes to the MultiHasher.
void	update(byte[] bytes, int offset, int len) Appends the specified bytes at the offset with the given length to the MultiHasher.

Methods inherited from class java.lang.Object

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

Constructor Detail

MultiHasher

public MultiHasher(MultiHasher.HashFunc... hashFunctions)

MultiHasher

public MultiHasher(java.util.Collection<MultiHasher.HashFunc> hashFunctions)

Method Detail

finish

public MultiHasher.HashResult finish()

Finishes this MultiHasher, returning a MultiHasher.HashResult result.

It is invalid to update a MultiHasher after it has finished.

Returns:

The result.

Throws:

java.lang.IllegalStateException - When this MultiHasher has already been finished.

load

public void load(java.nio.file.Path path)
          throws java.io.IOException

Loads the content of the provided Path into the MultiHasher.

Parameters:

path - The path to load.

Throws:

java.io.IOException - If there was an error reading/opening the file.

load

public void load(java.io.InputStream is)
          throws java.io.IOException

Loads the content of the given InputStream into the MultiHasher.

This method will block until there is no more data in the stream.

Parameters:

is - The InputStream to read from.

Throws:

java.io.IOException - If there was an error reading from the stream

update

public void update(byte[] bytes)

Appends the given bytes to the MultiHasher.

Parameters:

bytes - The Bytes to append.

update

public void update(byte[] bytes,
                   int offset,
                   int len)

Appends the specified bytes at the offset with the given length to the MultiHasher.

Parameters:

bytes - The bytes to add from.

offset - The offset into the buffer.

len - The length of the bytes to add.