/* 
 * CopyFile.java
 * -------------
 * This program shows an example of copying a text file
 * line by line.
 */

import acm.program.*;
import acm.util.*;
import java.io.*;

public class CopyFile extends ConsoleProgram {
    
    public void run() {
    	setFont("Times New Roman-24");
    	BufferedReader rd = openFile("Please enter filename: ");
    	
    	try {
    		PrintWriter wr = new PrintWriter(new FileWriter("copy.txt"));
    		
    		while (true) {
    			String line = rd.readLine();
    			if (line == null) break;
    			println(line);	// console
    			wr.println(line);  // file
    		}
    		
    		rd.close();
    		wr.close();
    		
    	} catch (IOException ex) {
    		throw new ErrorException(ex);
    	} 	    	
    }

	private BufferedReader openFile(String prompt) {
		BufferedReader rd = null;
		
		while (rd == null) {
			try {
				String filename = readLine(prompt);
				rd = new BufferedReader(new FileReader(filename));
			} catch (IOException ex) {
				println("Nice try punk.  That file doesn't exist.");
			}
		}
		return rd;
	}
	
    
}