// RHYTM
// using regular expressions to replace all the character and non/characters in a txt file 
// with a single character

import java.io.*;
import java.nio.*;
import java.nio.channels.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Exercise2 {
	public static void main (String[] args) throws IOException {

		// Create an input stream and file channel
		// Using first argument as file name to read in
		FileInputStream fis = new FileInputStream(args[0]);
		FileChannel fc = fis.getChannel();

		// Read the contents of a file into a ByteBuffer
		ByteBuffer bb = ByteBuffer.allocate((int)fc.size());
		fc.read(bb);
		fc.close();

		// Convert ByteBuffer to one long String
		String content = new String(bb.array());

		//do something here

		//string to match
		String regex = ".";  

		Pattern p = Pattern.compile(regex);
		Matcher m = p.matcher(content); 
		String output = m.replaceAll("/");

		


		// Create an output stream and file channel to write out a report
		// (Also print out report to screen)
		FileOutputStream fos = new FileOutputStream(args[1]);
		FileChannel outfc = fos.getChannel();

		// Convert content String into ByteBuffer and write out to file
		bb = ByteBuffer.wrap(output.getBytes());
		outfc.write(bb);
		outfc.close();

	}
}