Redirecting cerr

[Agoston Bejo]

Hi,
how can one redirect std::cerr into a file? Specifically, if I have an
ofstream object, is there something I can do to make "cerr << ..." calls
write into that particular ofstream object?

Thx,
Agoston

[Dietmar Kuehl]

Re: Redirecting cerr

Agoston Bejo wrote:[color=blue]
> how can one redirect std::cerr into a file?[/color]

I have answered this question loads of times in the past: you can
replace 'std::cerr's stream buffer. However, since 'std::cerr' is
possibly accessed after exiting 'main()', you probably need to
restore the original stream buffer or allocate your stream buffer
on the heap.

Specifically, if I have an[color=blue]
> ofstream object, is there something I can do to make "cerr << ..."[/color]
calls[color=blue]
> write into that particular ofstream object?[/color]

| std::ofstream out(...);
| std::streambuf orig = std::cerr.rdbuf (out.rdbuf());
| ... // use redirected cerr
| std::cerr.rdbuf (orig);
--
<mailto:dietmar _kuehl@yahoo.co m> <http://www.dietmar-kuehl.de/>
<http://www.contendix.c om> - Software Development & Consulting

[Alex Vinokur]

Re: Redirecting cerr


"Agoston Bejo" <gusz1@freemail .hu> wrote in message news:crlhok$qoe $1@news.caesar. elte.hu...[color=blue]
> Hi,
> how can one redirect std::cerr into a file? Specifically, if I have an
> ofstream object, is there something I can do to make "cerr << ..." calls
> write into that particular ofstream object?
>
> Thx,
> Agoston
>
>[/color]

Look at
* http://groups-beta.google.com/group/...4204134e9956a0
* http://alexvn.freeservers.com/s1/download.html (Redirecting cout/cerr <--> file )


--
Alex Vinokur
email: alex DOT vinokur AT gmail DOT com

http://mathforum.org/library/view/10978.html

http://sourceforge.net/users/alexvn