[KLUG Programming] Passing on variable argument lists.

[Robert G. Brown]

On Sun, 08 Feb 2004 17:27:45 -0500, Adam Williams <awilliam@whitemice.org> wrote:

>On Sun, 2004-02-08 at 14:27, Robert G. Brown wrote:
>> I beleive you want the man page for stdarg. These are macros for 
>> variable-length parameter lists.  Let us know if this is the right thing,
>
>It appears not; va_start/arg/end/copy seems to be for processing
>variable parameter lists in a function,  I just want to pass them into a
>'subordinate' function.
How is that not "processing"?
>
>And it appears this can't be done directly - 
>
>void ogo_call(char* ogourl, 
>              char* ogouser, 
>              char* ogopasswd,
>              char* ogocall,
>              char* ogoargs,
>               ... ) {
>...blah...blah...
>  results = xmlrpc_client_call_server(&env, server,
>                                     ogocall,
>                                     ogoargs);
>
>- results in a segmentation fault (although it obviously compiles OK).

Right, it can't be done directly. That is what I understand the var_args stuff 
is for. AFAIK, it's used to write things like printf, which has the same 
syntax that I think you want to use... extensible, or variable paramter lists).

>The function is called like -
>
>ogo_call(ogourl, ogouser, ogopasswd, ogocall,
>      "({s:{s:8,s:8}})",
>      "qualifier",
>      "startDate","20030801T00:00:00",
>      "endDate","20040831T23:59:59");
>
>- and if I put those static values directly into the
>xmlrpc_client_call_server call the little program happilly enumerates
>all my appointments between Aug 2003 & Aug 2004.
>
>Grrrr.
Welcome to static, strong datatyping! :)

							Regards,
							---> RGB <---