nxt.util

Class CountingInputReader

java.lang.Object

java.io.Reader

java.io.FilterReader

nxt.util.CountingInputReader

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable, java.lang.Readable

public class CountingInputReader
extends java.io.FilterReader

CountingInputReader extends Reader to count the number of characters read

Field Summary

Fields inherited from class java.io.FilterReader

in

Fields inherited from class java.io.Reader

lock

Constructor Summary

Constructors

Constructor and Description
CountingInputReader(java.io.Reader reader, long limit) Create a CountingInputReader for the supplied Reader

Method Summary

Modifier and Type	Method and Description
long	getCount() Return the total number of characters read
int	read() Read a single character
int	read(char[] cbuf) Read characters into an array
int	read(char[] cbuf, int off, int len) Read characters into an arry starting at the specified offset
long	skip(long n) Skip characters in the input stream

Methods inherited from class java.io.FilterReader

close, mark, markSupported, ready, reset

Methods inherited from class java.io.Reader

read

Methods inherited from class java.lang.Object

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

Constructor Detail

CountingInputReader

public CountingInputReader(java.io.Reader reader,
                           long limit)

Create a CountingInputReader for the supplied Reader

Parameters:

reader - Input reader

limit - Maximum number of characters to be read

Method Detail

read

public int read()
         throws java.io.IOException

Read a single character

Overrides:

read in class java.io.FilterReader

Returns:

Character or -1 if end of stream reached

Throws:

java.io.IOException - I/O error occurred

read

public int read(char[] cbuf)
         throws java.io.IOException

Read characters into an array

Overrides:

read in class java.io.Reader

Parameters:

cbuf - Character array

Returns:

Number of characters read or -1 if end of stream reached

Throws:

java.io.IOException - I/O error occurred

read

public int read(char[] cbuf,
                int off,
                int len)
         throws java.io.IOException

Read characters into an arry starting at the specified offset

Overrides:

read in class java.io.FilterReader

Parameters:

cbuf - Character array

off - Starting offset

len - Number of characters to be read

Returns:

Number of characters read or -1 if end of stream reached

Throws:

java.io.IOException - I/O error occurred

skip

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

Skip characters in the input stream

Overrides:

skip in class java.io.FilterReader

Parameters:

n - Number of characters to skip

Returns:

Number of characters skipped or -1 if end of stream reached

Throws:

java.io.IOException - I/O error occurred

getCount

public long getCount()

Return the total number of characters read

Returns:

Character count