#!/usr/bin/env ruby

require "socket"
require "dl/import"

module Win32
　extend DL::Importable
　
　typealias "DWORD", "unsigned long"
　typealias "BYTE", "unsigned char"
　typealias "ULONG", "unsigned long"
　
　KEYEVENTF_KEYUP = 0x02
　VK_SHIFT = 0x10
　VK_A = 0x41
　VK_SPACE = 0x20
　VK_BACKSPACE = 0x08
　
　dlload "user32.dll"
　extern "void keybd_event(BYTE, BYTE, DWORD, ULONG)"
　
　def send_keybd_event(bVk, dwFlags = 0)
　　keybd_event(bVk, 0, dwFlags,0)
　end

　module_function :send_keybd_event
end

serverhost = 'localhost'
port = 4321

socket = TCPSocket.new(serverhost, port)

prevval0 = 0
prevval2 = 0
while line = socket.gets
　(io,device,ad,portno,val) = line.chomp.split(/,/)
　if io == 'In' && device == 'InterfaceKit' && 
　　　ad = 'Analog' && portno.to_i == 0 then
　　　if val.to_i > 100　&& prevval0 < 100 then
　　　Win32.send_keybd_event(Win32::VK_SPACE)
　　　Win32.send_keybd_event(Win32::VK_SPACE,
　　　　　　　　　　　Win32::KEYEVENTF_KEYUP)
　　end
　　prevval0 = val.to_i
　end
...