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.rdbuf());
system(...);
cin.rdbuf(oldbuf);

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]

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

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

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

Gerrit

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