Package org.eclipse.jgit.util.io

Class LimitedInputStream

java.lang.Object

java.io.InputStream

java.io.FilterInputStream

org.eclipse.jgit.util.io.LimitedInputStream

All Implemented Interfaces:

Closeable, AutoCloseable

public abstract class LimitedInputStream
extends FilterInputStream

Wraps a InputStream, limiting the number of bytes which can be read. This class was copied and modifed from the Google Guava 16.0. Differently from the original Guava code, when a caller tries to read from this stream past the given limit and the wrapped stream hasn't yet reached its EOF this class will call the limitExceeded method instead of returning EOF.

Since:

3.3

Field Summary

Fields

Modifier and Type	Field	Description
protected long	limit	Max number of bytes to be read from the wrapped stream

Fields inherited from class java.io.FilterInputStream

in

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	LimitedInputStream(InputStream in, long limit)	Create a new LimitedInputStream

Method Summary

Modifier and Type	Method	Description
int	available()
protected abstract void	limitExceeded()	Called when trying to read past the given limit and the wrapped InputStream FilterInputStream.in hasn't yet reached its EOF
void	mark(int readLimit)
int	read()
int	read(byte[] b, int off, int len)
void	reset()
long	skip(long n)

Methods inherited from class java.io.FilterInputStream

close, markSupported, read

Methods inherited from class java.io.InputStream

nullInputStream, readAllBytes, readNBytes, readNBytes, transferTo

Methods inherited from class java.lang.Object

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

Field Detail

limit

protected final long limit

Max number of bytes to be read from the wrapped stream

Constructor Detail

LimitedInputStream

protected LimitedInputStream(InputStream in,
                             long limit)

Create a new LimitedInputStream

Parameters:

in - an InputStream

limit - max number of bytes to read from the InputStream

Method Detail

available

public int available()
              throws IOException

Overrides:

available in class FilterInputStream

Throws:

IOException

mark

public void mark(int readLimit)

Overrides:

mark in class FilterInputStream

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

reset

public void reset()
           throws IOException

Overrides:

reset in class FilterInputStream

Throws:

IOException

skip

public long skip(long n)
          throws IOException

Overrides:

skip in class FilterInputStream

Throws:

IOException

limitExceeded

protected abstract void limitExceeded()
                               throws IOException

Called when trying to read past the given limit and the wrapped InputStream FilterInputStream.in hasn't yet reached its EOF

Throws:

IOException - subclasses can throw an IOException when the limit is exceeded. The throws java.io.IOException will be forwarded back to the caller of the read method which read the stream past the limit.