From: Nick Sieger <nicksieger@...>
Date: 2007-03-27T13:18:10+09:00
Subject: Re: How do I implement the Unix 'tee' function for $stdout?

On 3/26/07, Larry Fast <lfast@mdsi.ca> wrote:
> Nick Sieger wrote:
> > Have a look at the CI::Reporter::OutputCapture class
> > at line 11, and its usage on line 50:
> > http://tinyurl.com/29rhqj
>
> Thanks Nick,
> This is *almost* what I want. I want to MERGE $stdout, $stderr and my
> debugging output.  If I change @captured_io to @@captured_io and move it
> outside Initialize, does everything else stay the same?
>
> The only changed section is then:
>     class OutputCapture < DelegateClass(IO)
>       def initialize(io, &assign)
>         super
>         @delegate_io = io
>         @assign_block = assign
>         @assign_block.call self
>       end
>
>       @@captured_io = StringIO.new
>
> Also, in your invocation on line 50, is {|io| $stdio = io} only used for
> resetting $stdout back to normal. Nothing else?

For the initial replacement as well as the resetting back to normal,
see the #initialize method where it is also used.

Seems like your mutation to use a @@class var should work fine.

/Nick