[GRASS-dev] g.rename consolidation

[Glynn Clements]

Martin Landa wrote:

> > You would need a version of the callee which takes a va_list as a
> > parameter, and I'm not sure whether there's any portable way to write
> > such functions.
> 
> OK,
> 
> /*!
>  * \fn void G_message_ex (char *msg,...)
>  *
>  * \brief Print a message to stderr only on the given verbosity level or greater
>  *
>  * The output format depends on enviroment variable GRASS_MESSAGE_FORMAT
>  *
>  * \param level verbosity level
> */
> void G_message_ex (int level, char *msg,...)
> {
>     char buffer[2000];  /* G_asprintf does not work */
>     va_list ap;
> 
>     va_start(ap, msg);
>     vsprintf(buffer,msg,ap);
>     va_end(ap);
> 
>     if (G_verbose() >= level) {
> 	print_error (buffer,MSG);
>     }
> }
> 
> anyway is not nice way. Duplicate the code. Last time I have tried to
> write G_message_no_line() I had similar problem.

I don't see a problem here; the va_start/vsprintf/va_end part is
pretty much inevitable for any variadic function.

-- 
Glynn Clements <glynn at gclements.plus.com>