From: Robert Klemme <shortcutter@...>
Date: 2006-05-17T20:17:32+09:00
Subject: Re: Capturing stdout

2006/5/17, Damphyr <damphyr@freemail.gr>:
> I have code that prints to stdout (using puts and/or print).
> I'm loading the code from a file (pretty much the way rake handles
> rakefiles) and would like to capture the output from the loaded code.
> I don't want to redirect stdout into a file or anywhere else, I need the
> output in a string.
>
> ---file1.rb
> puts "Output of meaningful code omitted"
> ---loader.rb
>
> begin
> ###do some magic to get the stdout from this point on into a string
> load file1.rb
> ###do some more magic to put stdout back where it was.
> end
>
> Has anyone a solution for this?

You can use popen but then your code is in another process.

> (Now that I think of it would StringIO do for stdout redirection?)

Yes, but you then must explicitely use a receiver with those puts
statements as Kernel.puts still sends to $DEFOUT.

Kind regards

robert

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