com.phloc.commons.io.streams

Class HashingInputStream

java.lang.Object

java.io.InputStream

com.phloc.commons.io.streams.WrappedInputStream

com.phloc.commons.io.streams.HashingInputStream

All Implemented Interfaces:

Closeable, AutoCloseable

public class HashingInputStream
extends WrappedInputStream

A wrapper around an InputStream that performs a hashing while reading.

Author:

Philip Helger

See Also:

IMessageDigestGenerator

Constructor Summary

Constructors

Constructor and Description
HashingInputStream(InputStream aSourceIS, EMessageDigestAlgorithm eMDAlgorithm)

Method Summary

Methods

Modifier and Type	Method and Description
byte[]	getDigest() Get the message digest of this stream.
int	read()
int	read(byte[] b, int nOffset, int nLength)
String	toString()

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

available, close, getWrappedInputStream, mark, markSupported, read, reset, skip

Methods inherited from class java.lang.Object

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

Constructor Detail

HashingInputStream

public HashingInputStream(@Nonnull
                  InputStream aSourceIS,
                  @Nonnull
                  EMessageDigestAlgorithm eMDAlgorithm)

Method Detail

read

public int read()
         throws IOException

Overrides:

read in class WrappedInputStream

Throws:

IOException

read

public int read(byte[] b,
       int nOffset,
       int nLength)
         throws IOException

Overrides:

read in class WrappedInputStream

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 WrappedInputStream