From: MENON Jean-Francois <Jean-Francois.MENON@...>
Date: 2002-06-02T13:15:15+09:00
Subject: Re: "system" and Windows

"Morris, Chris" wrote:
> 
> > I have cut & paste the code in my program and it doesn't work :-<
> > (in fact now, no command work :-<)
> 
> Here it is again copied from the very file I use. Maybe the web rendition
> messed up some of the characters (I know it doesn't render backslashes \
> correctly for me):
> 
> # code by Hee-Sob Park - posted here:
> # http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-talk/10006
> def system(command)
>   Win32API.new("crtdll", "system", ['P'], 'L').Call(command)
> end
> 
> # code by Hee-Sob Park - posted here:
> # http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-talk/10006
> def `(command)
>   popen = Win32API.new("crtdll", "_popen", ['P','P'], 'L')
>   pclose = Win32API.new("crtdll", "_pclose", ['L'], 'L')
>   fread = Win32API.new("crtdll", "fread", ['P','L','L','L'], 'L')
>   feof = Win32API.new("crtdll", "feof", ['L'], 'L')
>   saved_stdout = $stdout.clone
>   psBuffer = " " * 128
>   rBuffer = ""
>   f = popen.Call(command,"r")
>   while feof.Call( f )==0
>       l = fread.Call( psBuffer,1,128,f )
>       rBuffer += psBuffer[0..l]
>   end
>   pclose.Call f
>   $stdout.reopen(saved_stdout)
>   rBuffer
> end


thank you, "system" works very well now.

But I see two potential problems that make not consistent with the
original ruby command:
1) it takes only one argument 
2) it always set "$?" variable to false

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