Function pv_printf

pvar.c:5569–5637

int pv_printf(struct sip_msg* msg, pv_elem_p list, char *buf, int *len)
{
	int n;
	pv_value_t tok;
	str print;
	pv_elem_p it;
	char *cur;

	if(msg==NULL || list==NULL || buf==NULL || len==NULL)
		return -1;

	if(*len <= 0)
		return -1;

	*buf = '\0';
	cur = buf;

	n = 0;
	for (it=list; it; it=it->next)
	{
		/* put the text */
		if(it->text.s && it->text.len>0)
		{
			if(n+it->text.len < *len)
			{
				memcpy(cur, it->text.s, it->text.len);
				n += it->text.len;
				cur += it->text.len;
			} else {
				LM_ERR("no more space for text [%d][%d]\n", n, it->text.len);
				goto overflow;
			}
		}
		/* put the value of the specifier */
		if(it->spec.type!=PVT_NONE
				&& pv_get_spec_value(msg, &(it->spec), &tok)==0)
		{
			print = pv_value_print(&tok);
			if (n + print.len >= *len) {
				LM_ERR("no more space for spec value [%d][%d]\n",
				       n, print.len);
				goto overflow;
			}

			memcpy(cur, print.s, print.len);
			n += print.len;
			cur += print.len;
		}
	}

	goto done;

overflow:
	if (is_pv_print_buf(buf))
		LM_ERR("buffer too small -- increase 'pv_print_buf_size' from [%d]\n",
				*len);
	else
		LM_ERR("buffer too small -- increase the buffer size "