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/* vim:set ts=3 sw=3 sts=3 et: */
#ifndef MOOST_UTILS_YESNO_HPP__
#define MOOST_UTILS_YESNO_HPP__

#include <stdexcept>
#include <string>
#include <iostream>

namespace moost { namespace utils {

class YesNo
{
public:
   YesNo(std::string const & sMsg, bool bImplicitNo = false) : bYes(false)
   {
      std::string s;

      for(;;)
      {
         std::cout << sMsg << " <yes|no> " << std::flush;
         if(!std::getline(std::cin, s))
         {
            throw std::runtime_error("Invalid input stream");
         }

         if(s == "yes")
         {
            bYes = true;
            break;
         }
         else
         if(bImplicitNo || s == "no")
         {
            break;
         }
      }
   }

   bool IsYes() const { return bYes; }
   bool IsNo() const { return !bYes; }

private:
   bool bYes;
};

}}

#endif // MOOST_UTILS_YESNO_HPP__