Re: Redirecting all stdout commands

From:
"Victor Bazarov" <v.Abazarov@comAcast.net>
Newsgroups:
comp.lang.c++
Date:
Thu, 4 May 2006 11:17:33 -0400
Message-ID:
<e3d5ud$7lr$1@news.datemas.de>
Morpheus wrote:

I am trying to test a function that outputs text to the standard
output, presumably using a cout call. I do not have access to the
source, but need to test the output. Is this possible?

I can technically create an executable that calls the function and
then using a command prompt call the exexutable using the > output.txt
redirector but I would prefer to do everything within the application
itself. Is there a way for force an output to screen to a file or
string without having access to the cout call itself? ( would be easy
to do if I could simply do outfile << myText but the output is coming
from a function in a DLL for example).

example:

OutputMethod() // Inaccessible code that can not be modified
{
  std::cout << "This is some text" << std::endl;
}

int main() // My Code
{
  ...
  Redirect stdout to a text file
  ...
  OutputMethod(); // Call the method and have it output to a file
instead of the screen
  ...
  Verify the output file to see it's contents
  ...
}


Isn't there something about this in the FAQ? If not, google for
"redirecting standard output". It's been done countless times.

V
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