#include <sstream>

template<typename T>
T MenuDriver::read(const std::string& prompt) {
  bool valid = false;
  bool surpressNextPrompt = false;
  T val;

  while (!valid) {
    if (surpressNextPrompt)
      surpressNextPrompt = false; // turn off
    else if (prompt.size())
      std::cout << prompt;

    std::string response;
    *isr >> response;    //    getline(*isr, response);
    if (isr->eof()) {
      switchInput();
      surpressNextPrompt = true;
    } else {
      // successful so far
      if (isr != &std::cin)  // echo input
	std::cout << response << "\n";

      std::stringstream sstr;
      sstr << response;
      sstr >> val;
      valid = !sstr.fail();
    }
  }

  return(val);
}