//CFBufferedReader
// Purpose:
//   Since ColdFusion automatically turns "null" Strings into empty strings,
//   it is necessary to extend BufferedReader so that we can detect
//   the null string returned from readLine().
//
// Use:
//   CFBufferedReader works exactly like java.io.BufferedReader,
//   but adds an isEOF() method to indicate whether the last call
//   to readLine detected the end of the file.
//
// Author:
//   Daryl Banttari (Macromedia)
//
// Copyright: (c)2001 Macromedia
//   Feel free to use this for any purpose, with or without inclusion
//   of this copyright notice, so long as you agree to hold Macromedia
//   completely harmless for any use of this code.
//   We are using several classes from java.io,
//   so import everything under java.io:
import java.io.*;

//   Define this class as a subclass of java.io.BufferedReader
public class CFBufferedReader extends java.io.BufferedReader {
     // variable to hold the EOF status of the last read	
     // default to false; we'll assume you're not at eof if 	
	 // we haven't read anything yet	
     private boolean eof = false;			
     
     // our class constructors will simply pass the arguments	
     // through to our superclass, BufferedReader:	
     public CFBufferedReader(Reader in, int sz) {		
          // "super" is an alias to the superclass.
   		  // calling super() in this fashion actually
		  // invokes the superclass' constructor method.		
		  super(in, sz);	
     }	
     public CFBufferedReader(Reader in) {		
          super(in);	
     }
		
     // here we extend the readLine method:	
     public String readLine() throws java.io.IOException {		
          String curLine;		
          // call the "real" readLine() method from the superclass
		  curLine = super.readLine();
		  // now set eof to "is curline null?"		
          // note that there are two equals signs between "curLine" and "null"
          eof = (curLine == null);
 		  // return curline to the caller "as is"
		  return curLine;	
     }	
     public boolean isEOF() {		
          // simply return the current value if the eof variable
		  return eof;	
     }
     public void close() throws java.io.IOException {
     	//simply call the superclass function to close file
     	super.close();
     }
}