From: Robert Dober <robert.dober@...>
Date: 2006-09-28T21:26:36+09:00
Subject: Re: how to determine if pipe is given

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On 9/28/06, ara.t.howard@noaa.gov <ara.t.howard@noaa.gov> wrote:
>
> <Ara's wisdom snipped, real good stuff, hopefully you read it>
>
> i just use '-', or simply always read from STDIN, and then sleep at night
> ;-)


which is a very wise decision :)), nevertheless if Greg dies for it, with
some performance loss  one could do the following, I 'll give pseudo code  =
I
am bad in Thread programming
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
begin
    timeout(3) do
       STDIN.eof?
    end
 rescue TimeoutError
     Do something without STDIN
     Good bye
end

Do something with STDIN
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D



Now this is far from perfect but should catch about 99.9% of the use cases.
Anything I missed?
YUP the treatment might
BTW Greg, what do you want to do without a pipe, tell the loser that he
forgot to put one ;)

Cheers
Robert

> -a
> --
> in order to be effective truth must penetrate like an arrow - and that is
> likely to hurt. -- wei wu wei
>
> Ouch


--=20
Deux choses sont infinies : l'univers et la b=EAtise humaine ; en ce qui
concerne l'univers, je n'en ai pas acquis la certitude absolue.

- Albert Einstein

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