Redirecting standard input for external application

[Gerrit Hulleman]

Is it possible to redirect the standard input for an external application?

Something like:
ifstream in (...);
std::streambufx oldbuf = cin.rdbuf(in.rd buf());
system(...);
cin.rdbuf(oldbu f);

The proces must run another program where the input for this external
program is allready present in memory of the original proces.

Gerrit

[John Harrison]

Re: Redirecting standard input for external application


"Gerrit Hulleman" <hulleman@lup us-delta.tmfweb.nl > wrote in message
news:4090a8c6$0 $557$e4fe514c@n ews.xs4all.nl.. .[color=blue]
> Is it possible to redirect the standard input for an external application?
>
> Something like:
> ifstream in (...);
> std::streambufx oldbuf = cin.rdbuf(in.rd buf());
> system(...);
> cin.rdbuf(oldbu f);
>
> The proces must run another program where the input for this external
> program is allready present in memory of the original proces.
>
> Gerrit
>[/color]

Not in standard C++, you certainly can do this on Unix and Windows but in
both cases you need to use non-standard OS-specific API calls. Ask on a
group dedicated to whatever operating system you are using.

john