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mindspore/third_party/securec/src/fwscanf_s.c

56 lines
2.1 KiB

/**
* Copyright 2020 Huawei Technologies Co., Ltd
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#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;
}