AW: [Caml-list] how to wrap a command line call correctly?

[Gerd Stolpmann <info@gerd-stolpmann.de>]

Am 21.11.2012 20:53:40 schrieb(en) Florent Monnier:
> Hi,
> 
> I would like to know how to wrap a command line call correctly?
> 
> I particular keep the same order of the output messages for stderr and
> stdout correctly, how to handle the cases when there is something on
> stdin or not, etc.

There is no way to keep the order of output messages, except you assign  
stdout and stderr to the same descriptor.

Otherwise, the Shell library included in Ocamlnet is your friend:

http://projects.camlcity.org/projects/dl/ocamlnet-3.6.1/doc/html-main/Shell.html

Especially, it can also be used in a synchronous environment (no need  
to tie yourself to Lwt), but async usage is also possible.

Shell takes advantage of the fast posix_spawn calls so far provided by  
the OS (e.g. on Linux and OS X), which means a significant speed  
advantage compare to fork+exec.

Gerd


> 
> Thanks
> 
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Gerd Stolpmann, Darmstadt, Germany    gerd@gerd-stolpmann.de
Creator of GODI and camlcity.org.
Contact details:        http://www.camlcity.org/contact.html
Company homepage:       http://www.gerd-stolpmann.de
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