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

#include "securec.h"

/*
 * <FUNCTION DESCRIPTION>
 *    The fwscanf_s function  is  the  wide-character  equivalent  of the
 * fscanf_s function The fwscanf_s 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 converted 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 fwscanf_s(FILE *stream, const wchar_t *format, ...) {
  int ret; /* If initialization causes  e838 */
  va_list argList;

  va_start(argList, format);
  ret = vfwscanf_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;
}