Thread: Default string with cin.getline()?

Originally posted by Eibro
Grrrrr I can't believe I left it in there Now i'll have to go back and edit it...
Does the updated code compile on codewarrior?

Yes, it does. No errors and no warnings.

Originally posted by Eibro

Hmm, this wouldn't work for ofstream arguments would it? If not, cerr would be one other valid argument to the function.

Actually cerr/clog would be more valid than cout. cerr is guaranted to point to the screen, whereas cout can point to a file. There's no harm in keeping the ostream parameter, but you could switch the position of the two parameters and make cout/cerr/clog the default.

If you use this method with an ofstream object, you'll fill the file with strange characters ('\b').

Heh, I'm having too much fun with this :)
It's been WAAAY overdone, but I've improved the code significantly:

Code:

   std::string GetInputDefault(const std::string &defaultin, std::ostream &out = std::cout)
   {  
      std::vector<char> inputvec(defaultin.begin(), defaultin.end());
      out << defaultin;
      
      while (true)
      {
         int in = getch(); // Get keycode
         switch (in)
         {
         case 13: // Enter
            return std::string(inputvec.begin(), inputvec.end());
         case 8:  // Backspace
            if (inputvec.size() != 0)
            {
               inputvec.pop_back(); // Remove last character entered
               out << "\b \b" << std::flush; // Remove from screen
            }
            break;
         default:
            inputvec.push_back(in); // Insert character
            out << static_cast<char>(in) << std::flush; // Print
         }
      }
   }

edit: Thanks Sang-Drax

To make it work in CodeWarrior: add std::flush to every out-statement.
It seems that CodeWarrior doesn't automatically flush the input buffer when using conio-functions.