Package org.apache.commons.compress.utils

Class ChecksumCalculatingInputStream

java.lang.Object

java.io.InputStream

java.io.FilterInputStream

org.apache.commons.compress.utils.ChecksumCalculatingInputStream

All Implemented Interfaces:

Closeable, AutoCloseable

public class ChecksumCalculatingInputStream
extends FilterInputStream

Calculates the checksum of the data read.

Since:

1.14

Constructor Summary

Constructors

Constructor	Description
ChecksumCalculatingInputStream(Checksum checksum, InputStream inputStream)

Method Summary

Modifier and Type	Method	Description
long	getValue()	Returns the calculated checksum.
int	read()	Reads a single byte from the stream
int	read(byte[] b, int off, int len)	Reads from the stream into a byte array.
long	skip(long n)

Methods inherited from class java.io.FilterInputStream

available, close, mark, markSupported, read, reset

Methods inherited from class java.io.InputStream

nullInputStream, readAllBytes, readNBytes, readNBytes, skipNBytes, transferTo

Methods inherited from class java.lang.Object

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

Constructor Details

ChecksumCalculatingInputStream

public ChecksumCalculatingInputStream(Checksum checksum,
 InputStream inputStream)

Method Details

getValue

public long getValue()

Returns the calculated checksum.

Returns:

the calculated checksum.

read

public int read()
         throws IOException

Reads a single byte from the stream

Overrides:

read in class FilterInputStream

Throws:

IOException - if the underlying stream throws or the stream is exhausted and the Checksum doesn't match the expected value

read

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

Reads from the stream into a byte array.

Overrides:

read in class FilterInputStream

Throws:

IOException - if the underlying stream throws or the stream is exhausted and the Checksum doesn't match the expected value

skip

public long skip(long n)
          throws IOException

Overrides:

skip in class FilterInputStream

Throws:

IOException