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com.go.trove.io
Class PositionReader  

java.lang.Object
  java.io.Reader
      java.io.FilterReader
          com.go.trove.io.PositionReader

Direct Known Subclasses:

EscapeReader, LinePositionReader, PushbackPositionReader

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public class PositionReader

extends java.io.FilterReader

The PositionReader tracks the postion in the stream of the next character to be read. PositionReaders chain together such that the position is read from the earliest PositionReader in the chain.

Position readers automatically close the underlying input stream when the end of file is reached. Ordinary input streams don't do this.

Version:

15 , 12/11/00

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Field Summary
private  boolean	mClosed
protected  int	mPosition
protected  PositionReader	mPosReader           Is non-null when this PositionReader is chained to another.

 

Fields inherited from class java.io.FilterReader

in

 

Fields inherited from class java.io.Reader

lock

 

Constructor Summary

PositionReader(java.io.Reader reader)

 

Method Summary
void	close()           This method closes the stream by calling the close() method of the underlying stream.
int	getNextPosition()
int	read()           Calls the in.read() method
int	read(char[] buf, int off, int length)           Calls the in.read(char[], int, int) method.

 

Methods inherited from class java.io.FilterReader

mark, markSupported, ready, reset, skip

 

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

 

Field Detail

mPosReader

protected PositionReader mPosReader

Is non-null when this PositionReader is chained to another.

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mPosition

protected int mPosition

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mClosed

private boolean mClosed

Constructor Detail

PositionReader

public PositionReader(java.io.Reader reader)

Method Detail

getNextPosition

public int getNextPosition()

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read

public int read()
         throws java.io.IOException

Description copied from class: java.io.FilterReader

Calls the in.read() method

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read

public int read(char[] buf,
                int off,
                int length)
         throws java.io.IOException

Description copied from class: java.io.FilterReader

Calls the in.read(char[], int, int) method.

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close

public void close()
           throws java.io.IOException

Description copied from class: java.io.FilterReader

This method closes the stream by calling the close() method of the underlying stream.

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