org.hsqldb.lib

Class CountdownInputStream

java.lang.Object

java.io.InputStream

org.hsqldb.lib.CountdownInputStream

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

public final class CountdownInputStream
extends java.io.InputStream

Counts down from a specified value the number of bytes actually read from the wrapped InputStream.

Returns minus one (-1) early from readXXX methods if the count down reaches zero (0) before the end of the wrapped InputStream is encountered.

This class is especially useful when a fixed number of bytes is to be read from an InputStream that is in turn to be used as the source for an InputStreamReader.

Since:

1.9.0

Constructor Summary

Constructors

Constructor and Description
CountdownInputStream(java.io.InputStream is)

Method Summary

Modifier and Type	Method and Description
int	available()
void	close()
long	getCount()
int	read()
int	read(byte[] buf)
int	read(byte[] buf, int off, int len)
void	setCount(long count)
long	skip(long count)

Methods inherited from class java.io.InputStream

mark, markSupported, reset

Methods inherited from class java.lang.Object

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

Constructor Detail

CountdownInputStream

public CountdownInputStream(java.io.InputStream is)

Method Detail

read

public int read()
         throws java.io.IOException

Specified by:

read in class java.io.InputStream

Throws:

java.io.IOException

read

public int read(byte[] buf)
         throws java.io.IOException

Overrides:

read in class java.io.InputStream

Throws:

java.io.IOException

read

public int read(byte[] buf,
                int off,
                int len)
         throws java.io.IOException

Overrides:

read in class java.io.InputStream

Throws:

java.io.IOException

close

public void close()
           throws java.io.IOException

Specified by:

close in interface java.io.Closeable

Specified by:

close in interface java.lang.AutoCloseable

Overrides:

close in class java.io.InputStream

Throws:

java.io.IOException

available

public int available()
              throws java.io.IOException

Overrides:

available in class java.io.InputStream

Throws:

java.io.IOException

skip

public long skip(long count)
          throws java.io.IOException

Overrides:

skip in class java.io.InputStream

Throws:

java.io.IOException

getCount

public long getCount()

setCount

public void setCount(long count)