import java.io.*;

import java.util.*;

public class Assemble

{

public static String pad(int n, int w)

{

// determine length of 'n'

// calculate number of leading 0's to pad with

// create and return string of leading 0's, and 'n'

}

static void readSrc(String fname) throws IOException

{

//for each line of assembly code:

{

// skip any lines of length zero or starting with '#'

// tokenize string. 1st token is operator, 2nd is operand

// If operand is invalid, display error and abort.

// If operator is invalid, display error and abort.

// convert string operator to numeric form.

// output opcode and operand, each padded to two characters.

}

}

public static void main(String argv[]) throws IOException

{

if (argv.length != 1)

{

System.out.println("usage: java Assemble INPUTFILE");

System.exit(0);

}

readSrc(argv[0]);

}

}