From: Sean O'Halpin <sean.ohalpin@...>
Date: 2007-04-06T23:28:20+09:00
Subject: Re: A convoluted question about stdout

On 4/6/07, Sonny Chee <sonny.chee@gmail.com> wrote:
> Hey Guys,
>
> I know I can do a $stdout.reopen and redirect it to a file.  Is there a
> more direct way to get at the contents of stdout... say, redirect stdout
> to variable?
>
> Sonny.
>
> --
> Posted via http://www.ruby-forum.com/.
>
>
Maybe something like this (a variation on Bruce's post):

def capture_stdout(&block)
  raise ArgumentError, "No block given" if !block_given?
  old_stdout = $stdout
  $stdout = sio = StringIO.new
  yield
  $stdout = old_stdout
  sio.rewind
  sio.read
end

txt = capture_stdout do
  puts "dlroW olleH"
end
puts txt.reverse

Regards,
Sean