Package com.mastfrog.util.streams

Class HashingInputStream

java.lang.Object

java.io.InputStream

java.io.FilterInputStream

com.mastfrog.util.streams.HashingInputStream

All Implemented Interfaces:

Closeable, AutoCloseable

public final class HashingInputStream
extends FilterInputStream

Wrapper for an input stream which can compute a hash as bytes are read.

Author:

Tim Boudreau

Field Summary

Fields inherited from class java.io.FilterInputStream

in

Method Summary

Modifier and Type	Method	Description
int	available()
void	close()
static final MessageDigest	createDigest(String algorithm)
byte[]	getDigest()
String	getHashAsString()
void	mark(int readlimit)
boolean	markSupported()
int	read()
int	read(byte[] b, int off, int len)
void	reset()
static HashingInputStream	sha1(InputStream in)

Methods inherited from class java.io.FilterInputStream

read, skip

Methods inherited from class java.io.InputStream

nullInputStream, readAllBytes, readNBytes, readNBytes, skipNBytes, transferTo

Methods inherited from class java.lang.Object

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

Method Details

createDigest

public static final MessageDigest createDigest(String algorithm)

sha1

public static HashingInputStream sha1(InputStream in)

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Overrides:

close in class FilterInputStream

Throws:

IOException

getDigest

public byte[] getDigest()

read

public int read()
         throws IOException

Overrides:

read in class FilterInputStream

Throws:

IOException

read

public int read(byte[] b,
 int off,
 int len)
         throws IOException

Overrides:

read in class FilterInputStream

Throws:

IOException

available

public int available()
              throws IOException

Overrides:

available in class FilterInputStream

Throws:

IOException

mark

public void mark(int readlimit)

Overrides:

mark in class FilterInputStream

markSupported

public boolean markSupported()

Overrides:

markSupported in class FilterInputStream

reset

public void reset()
           throws IOException

Overrides:

reset in class FilterInputStream

Throws:

IOException

getHashAsString

public String getHashAsString()
                       throws IOException

Throws:

IOException