/*
 * Copyright (c) Huawei Technologies Co., Ltd. 2014-2018. All rights reserved.
 * Description: fscanf_s function
 * Author: lishunda
 * Create: 2014-02-25
 */

#include "securec.h"

/*
 * <FUNCTION DESCRIPTION>
 *    The fscanf_s function is equivalent to fscanf except that the c, s,
 *    and [ conversion specifiers apply to a pair of arguments (unless
 * assignment suppression is indicated by a*) The fscanf function reads data
 * from the current position of stream into the locations given by argument (if
 * any). Each argument must be a pointer to a variable of a type that
 * corresponds to a type specifier in format. format controls the interpretation
 * of the input fields and has the same form and function as the format argument
 * for scanf.
 *
 * <INPUT PARAMETERS>
 *    stream              Pointer to FILE structure.
 *    format              Format control string, see Format Specifications.
 *    ...                 Optional arguments.
 *
 * <OUTPUT PARAMETERS>
 *    ...                 The convered value stored in user assigned address
 *
 * <RETURN VALUE>
 *    Each of these functions returns the number of fields successfully
 * converted and assigned; the return value does not include fields that were
 * read but not assigned. A return value of 0 indicates that no fields were
 * assigned. return -1 if an error occurs.
 */
int fscanf_s(FILE *stream, const char *format, ...) {
  int ret; /* If initialization causes  e838 */
  va_list argList;

  va_start(argList, format);
  ret = vfscanf_s(stream, format, argList);
  va_end(argList);
  (void)argList; /* To clear e438 last value assigned not used , the compiler
                    will optimize this code */

  return ret;
}