/**
* printf()-style function that appends the output to an autobuffer.
* The function accepts a variable number of arguments based on the format string.
* @param autobuf pointer to autobuf object
* @param fmt printf format string
* @return -1 if an out-of-memory error happened,
* otherwise it returns the number of written characters
* (excluding the \0)
*/
int
abuf_appendf(struct autobuf *autobuf, const char *fmt, ...)
{
int rc;
va_list ap;
if (autobuf == NULL) return 0;
va_start(ap, fmt);
rc = abuf_vappendf(autobuf, fmt, ap);
va_end(ap);
return rc;
}
{
int rv;
va_list ap;
char *first;
if (!comments) {
va_start(ap, fmt);
first = va_arg(ap, char*);
va_end(ap);
if (*first) {
return 0;
}
}
va_start(ap, fmt);
rv = abuf_vappendf(autobuf, fmt, ap);
va_end(ap);
return rv;
}
static void olsrd_write_if_autobuf(struct autobuf *out, struct if_config_options *cnfi, bool comments) {
struct ipaddr_str ipbuf;
struct olsr_lq_mult *mult;
abuf_puts(out, "{\n");
if (comments) abuf_puts(out,
" # Interface Mode is used to prevent unnecessary\n"
" # packet forwarding on switched ethernet interfaces\n"
" # valid Modes are \"mesh\" and \"ether\"\n"
" # (default is \"mesh\")\n"
" \n");