Re: Re: using stdout/stderr with python

On 2004.05.25 17:48, Kevin Smith wrote:
> Martin F Krafft wrote:
> > > Some of my functions take a FILE*. I understand how one can
> > > provide wrappers or a typemap to deal with that, but what if
> > > I want to pass stdout and stderr into these functions as the FILE*
> > > arguments? I could not find a way to do this.
>
> One way would be to create C functions like GetStdin and GetStdout,  
> and wrap them. This way, from Python, you could get access to FILE*  
> versions of those streams. Then, you can pass those values back into  
> your other functions.

This wouldn't help when next he wants to pass a Python file handle  
created with open(). From a quick look at the Python/C API (see
http://www.python.org/doc/2.3.3/api/fileObjects.html) the following  
might work:

%typemap(in) FILE* {
   if (PyFile_Check($input)) {
       $1 = PyFile_AsFile($input);
   } else {
       SWIG_exception(SWIG_TypeError, "file expected"),
   }
}

but I haven't tested it, so I don't guarantee that it won't cause  
scripts to crash horribly.

Hope this helps,
        Luigi
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