com.phloc.commons.io.streams

Class HashingOutputStream

java.lang.Object

java.io.OutputStream

com.phloc.commons.io.streams.WrappedOutputStream

com.phloc.commons.io.streams.HashingOutputStream

All Implemented Interfaces:

Closeable, Flushable, AutoCloseable

public class HashingOutputStream
extends WrappedOutputStream

A wrapper around an OutputStream that performs a hashing while writing.

Author:

Philip Helger

See Also:

IMessageDigestGenerator

Constructor Summary

Constructors

Constructor and Description
HashingOutputStream(OutputStream aSourceOS, EMessageDigestAlgorithm eMDAlgorithm)

Method Summary

Methods

Modifier and Type	Method and Description
byte[]	getDigest() Get the message digest of this stream.
String	toString()
void	write(byte[] aBuf, int nOfs, int nLength)
void	write(int n)

Methods inherited from class com.phloc.commons.io.streams.WrappedOutputStream

close, flush, getWrappedOutputStream, write

Methods inherited from class java.lang.Object

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

Constructor Detail

HashingOutputStream

public HashingOutputStream(@Nonnull
                   OutputStream aSourceOS,
                   @Nonnull
                   EMessageDigestAlgorithm eMDAlgorithm)

Method Detail

write

public void write(int n)
           throws IOException

Overrides:

write in class WrappedOutputStream

Throws:

IOException

write

public void write(byte[] aBuf,
         int nOfs,
         int nLength)
           throws IOException

Overrides:

write in class WrappedOutputStream

Throws:

IOException

getDigest

@Nonnull
public byte[] getDigest()

Get the message digest of this stream. Call this only once the read has been finished. Never call this in the middle of reading a stream, because the digest cannot be updated afterwards.

Returns:

The message digest of this stream.

toString

public String toString()

Overrides:

toString in class WrappedOutputStream