From: Robert Klemme <shortcutter@...>
Date: 2010-08-24T22:22:02+09:00
Subject: Re: Interacting with other programs

2010/8/24 Jeppe Jakobsen <jeppe88@gmail.com>:
> Is it possible to make some kind of program hook in ruby, so I can have
> the program in question send it's calls to my ruby script first, and
> then have ruby forward them to the program?
>
> If so, please throw me a link where I can read on the subject. Tried to
> look into some win32API docs, but didnīt find what I was looking for.

http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-talk/66884

You can also use #expect from the standard lib:

require 'expect'

IO.popen "your command", "r+" do |io|
  prompt_seen = false

  io.expect ">", 100 do |line|
    prompt_seen = true
    printf "Got prompt: %p\n", line
  end

  puts "no prompt in time!" unless prompt_seen

  io.puts "exit" # for shells and other interactive programs
  io.close_write
end

The code is untested but should get you going into the right direction.

Kind regards

robert

-- 
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/