From: Sy Ali <sy1234@...>
Date: 2006-06-08T14:51:26+09:00
Subject: Re: pausing until a character is received

Well.. since I can process the characters I receive through read_char
I can determine if I receive a ^c and act accordingly.  Maybe this is
a smarter way to act.  Maybe it's going to bite me in the butt.

There do appear to be some quirks with using INT, which I don't
understand.  I don't seem to be able to test this concept under my
setup.

I know my code reads like the programming equivalent to ESL, but:

begin
 require "Win32API"
 def read_char
   Win32API.new("crtdll", "_getch", [], "L").Call
 end
rescue LoadError
 def read_char
   system "stty raw -echo"
   STDIN.getc
 ensure
   system "stty -raw echo"
 end
end

i = 1
until i > 3
	# get a character
	a = read_char
	# 3 is for ^c
	# TODO: This may not be portable!
	if a == 3 then puts "aborting..." ; break end
	puts "I received:  " + a.to_s
	i = i + 1
end

puts "I'm done"
trap(:INT) {
	puts "this doesn't work"
}