From: Michal Suchanek <hramrach@...>
Date: 2008-08-01T08:10:30+09:00
Subject: Re: Input redirection in ruby

On 31/07/2008, Robert Klemme <shortcutter@googlemail.com> wrote:
> On 31.07.2008 16:10, Michal Suchanek wrote:
>
> > I could not find any way to redirect input and output of programs in ruby.
> >
> > You can capture the fds but not redirect AFAICT.
> >
>
>  You can - and it's pretty easy also.  The key feature to know is IO#reopen:

Yes, this makes stuff much easier. Still to do what shell does when
you use a shell pipe you need a working fork. I am not sure how fork
is emulated on platforms that use spawn like Windows.

According to porting tutorials passing the fd's is possible with the
windows API but doing a full fork() is hard - it normally requires
copying the whole address space manually because part of the NT core
functionality is not exposed in the Win32 API.

Thanks

Michal