lib/stdlib/sscanf.c

   1 /*
   2  * Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
   3  *
   4  * SPDX-License-Identifier: BSD-3-Clause
   5  */
   6
   7 #include <stdio.h>
   8 #include <sys/cdefs.h>
   9
  10 /*
  11  * TODO: This is not a real implementation of the sscanf() function. It just
  12  * returns the number of expected arguments based on the number of '%' found
  13  * in the format string.
  14  */
  15 int
  16 sscanf(const char *__restrict str, char const *__restrict fmt, ...)
  17 {
  18         int ret = 0;
  19
  20         while (*fmt != '\0') {
  21                 if (*fmt++ == '%') {
  22                         ret++;
  23                 }
  24         }
  25
  26         return ret;
  27 }