/*

 * Copyright 2011 Steven Gribble

 *

 *  This file is the solution to an exercise problem posed during

 *  one of the UW CSE 333 lectures (333exercises).

 *

 *  333exercises is free software: you can redistribute it and/or modify

 *  it under the terms of the GNU General Public License as published by

 *  the Free Software Foundation, either version 3 of the License, or

 *  (at your option) any later version.

 *

 *  333exercises is distributed in the hope that it will be useful,

 *  but WITHOUT ANY WARRANTY; without even the implied warranty of

 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 *  GNU General Public License for more details.

 *

 *  You should have received a copy of the GNU General Public License

 *  along with 333exercises.  If not, see <http://www.gnu.org/licenses/>.

 */



// This file is taken from lec 11 exercise 2.



#include <sstream>

#include <cctype>



#include "./GetWord.h"



using namespace std;



string GetWord::GetNextWord() {

  stringstream ss;

  string retstr = "";



  // Zoom ahead to the start of the next word, or return

  // empty string if we hit EOF first.

  while (f_.good()) {

    char c;



    c = f_.peek();

    if (!f_.good())

      return retstr;

    if (isalnum(c))

      break;

    f_.get(c);

  }



  // Keep chomping until we hit the end of the word or EOF.

  while (f_.good()) {

    char c;



    f_.get(c);

    if (f_.good()) {

      if (isalnum(c))

        ss << c;

      else

        break;

    }

  }



  // Done with the word; return it.

  return ss.str();

}