Class: IO

Inherits:
Object
  • Object
show all
Defined in:
lib/unroller.rb

Instance Method Summary collapse

Instance Method Details

#getch ⇒ Object

Gets a single character, as a string. Adjusts for the different behavior of getc if we are using termios to get it to return immediately when you press a single key or if they are not using that behavior and thus have to press Enter after their single key.



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# File 'lib/unroller.rb', line 78

def getch
  response = getc
  if !$termios_loaded
    next_char = getc
    new_line_characters_expected = ["\n"]
    #new_line_characters_expected = ["\n", "\r"] if windows?
    if next_char.chr.in?(new_line_characters_expected)
      # Eat the newline character
    else
      # Don't eat it
      # (This case is necessary, for escape sequences, for example, where they press only one key, but it produces multiple characters.)
      $stdin.ungetc(next_char)
    end
  end
  response.chr
end