Class: Chomper

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

Class Method Summary collapse

Class Method Details

.get_char ⇒ Object

Allows ‘Press any key to continue’ to work without requiring return.



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# File 'lib/ruby_drills/chomper.rb', line 5

def self.get_char
  begin
    # save previous tty state
    state = `stty -g`
    # -icanon - disable canonical input (ERASE and KILL processing)
    # sig - checking characters against control characters INTR, QUIT, and SUSP
    `stty raw -echo -icanon isig`

    begin
      # do / while since using the arrow keys results in multi-byte input
      # that gets left in the stdin buffer.
      STDIN.getc.chr
    end while $stdin.ready?
  ensure
    # restore the default tty state
    `stty #{state}`
  end
end