void buffer_sprintf(BUFFER *wb, const char *fmt, ...)
{
if(unlikely(!fmt || !*fmt)) return;
buffer_need_bytes(wb, 2);
size_t len = wb->size - wb->len - 1;
size_t wrote;
va_list args;
va_start(args, fmt);
wrote = (size_t) vsnprintfz(&wb->buffer[wb->len], len, fmt, args);
va_end(args);
if(unlikely(wrote >= len)) {
// truncated
buffer_overflow_check(wb);
debug(D_WEB_BUFFER, "web_buffer_sprintf(): increasing web_buffer at position %zu, size = %zu\n", wb->len, wb->size);
buffer_need_bytes(wb, len + WEB_DATA_LENGTH_INCREASE_STEP);
va_start(args, fmt);
buffer_vsprintf(wb, fmt, args);
va_end(args);
}
else
wb->len += wrote;
// the buffer is \0 terminated by vsnprintf
}
int snprintfz(char *dst, size_t n, const char *fmt, ...) {
va_list args;
va_start(args, fmt);
int ret = vsnprintfz(dst, n, fmt, args);
va_end(args);
return ret;
}
int snprintfz(char *buf, int size, const char *fmt,...)
{
va_list ap;
va_start(ap, fmt);
int len = vsnprintfz(buf, size, fmt, ap);
va_end(ap);
return len;
}
void buffer_vsprintf(BUFFER *wb, const char *fmt, va_list args)
{
if(unlikely(!fmt || !*fmt)) return;
buffer_need_bytes(wb, 2);
size_t len = wb->size - wb->len - 1;
wb->len += vsnprintfz(&wb->buffer[wb->len], len, fmt, args);
buffer_overflow_check(wb);
// the buffer is \0 terminated by vsnprintfz
}
void buffer_snprintf(BUFFER *wb, size_t len, const char *fmt, ...)
{
if(unlikely(!fmt || !*fmt)) return;
buffer_need_bytes(wb, len + 1);
va_list args;
va_start(args, fmt);
wb->len += vsnprintfz(&wb->buffer[wb->len], len, fmt, args);
va_end(args);
buffer_overflow_check(wb);
// the buffer is \0 terminated by vsnprintfz
}
