/*
 * --------------------------------------------------------------------
 * CS2S03/SE2S03, November 2011
 * Assignment 5, Question 3
 * File: PE0906.cpp
 * --------------------------------------------------------------------
 * This program reads a string and diplays it logical
 * units (tokens) on the screen.
 * --------------------------------------------------------------------
 */

#include "genlib.h"
#include "simpio.h"
#include "scanner.h"
#include <iostream>

/* Private function prototypes */

void DivideAndDisplay(Scanner &scanner, string str);

/* Main program */

int main() {

    Scanner scanner;
    scanner.setSpaceOption(Scanner::PreserveSpaces);
                                  /* Default Setting - Not Required */
    scanner.setStringOption(Scanner::ScanQuotesAsStrings);
                                  /* Non-Default Setting - Required */

    while (true) {
        cout << "********************************" << endl;
        cout << "Enter a string: ";
        string str = GetLine();
        if (str == "") break;
        DivideAndDisplay(scanner, str);
    }

    return 0;
}

/*
 * Function: DivideAndDisplay
 * Usage: DivideAndDisplay(scanner, str)
 * -------------------------------------
 * This function divides a string into its logical units
 * and prints the result on the screen.
 */

void DivideAndDisplay(Scanner &scanner, string str) {
    scanner.setInput(str);
    while (scanner.hasMoreTokens()) {
        cout << scanner.nextToken() << endl;
    }
}