keypress_stream.rb

## Creates a stream array of key press instances, updates 100 times a second, ignores held keys(not totaly working yet)
## This is a pure ruby key listener / logger that works for the consols keyboard context, unfortuanatly not in other contexts
## such as other windows.
##
##  Currently a bug is causing every loop to set the current value to lift even if key press is still present
##  this bug is in the listen loop and is involved with the onditional branch that is supposed to set lift status
##  when a check reveals that no key is being pressed, this will allow the stream to capture individual instances
##  of key presses, the current variable represents the current key being pressed and is accurate with in a
##  ten-thoudanth of a second, to change this you can tweak the sleep setting.
##
##  I will fix this crap class when I get the time but if you feel like you're upto it, please feel free to give it a shot.
##
class KeyPress_Stream
 def initialize   
   @stream = []
   @current = "lift"
   @listen = false
   @use_stty = nil
   begin
	  require 'Win32API'
	  @kbhit = Win32API.new('crtdll', '_kbhit', [ ], 'I')
      @getch = Win32API.new('crtdll', '_getch', [ ], 'L')
      @use_stty = false
	rescue LoadError
	   @use_stty = true
	end
	listen
  end
  def listen  
    @listen = true
    while @listen
      k = self.getkey.to_i.chr.to_s
      if k.to_s != "" or k != nil
	    @current = k.to_s
		if @stream[-1].to_s != @current.to_s 
		  @stream << @current.to_s
		end
		puts "Key Pressed: " + @stream.to_s
	  else
	    @current = "lift"
	  end
	  sleep 0.01
    end
  end

  def getkey
    if @use_stty
	  char = nil
	  begin
        system('stty raw -echo')
        char = (SDTIN.read_nonblock(1).ord rescue nil)
      ensure
        system('stty -raw echo')
      end		
	  return char
    else
	  return @kbhit.Call.zero? ? nil : @getch.Call
	end
  end
end