50 lines
1.8 KiB
C
50 lines
1.8 KiB
C
/*
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* Copyright (c) Huawei Technologies Co., Ltd. 2014-2018. All rights reserved.
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* Description: sscanf_s function
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* Author: lishunda
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* Create: 2014-02-25
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*/
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#include "securec.h"
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/*
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* <FUNCTION DESCRIPTION>
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* The sscanf_s function is equivalent to fscanf_s,
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* except that input is obtained from a string (specified by the argument
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* buffer) rather than from a stream The sscanf function reads data from buffer
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* into the location given by each argument. Every argument must be a pointer to
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* a variable with a type that corresponds to a type specifier in format. The
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* format argument controls the interpretation of the input fields and has the
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* same form and function as the format argument for the scanf function. If
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* copying takes place between strings that overlap, the behavior is undefined.
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*
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* <INPUT PARAMETERS>
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* buffer Stored data.
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* format Format control string, see Format Specifications.
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* ... Optional arguments.
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*
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* <OUTPUT PARAMETERS>
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* ... The converted value stored in user assigned address
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*
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* <RETURN VALUE>
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* Each of these functions returns the number of fields successfully
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* converted and assigned; the return value does not include fields that were
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* read but not assigned. A return value of 0 indicates that no fields were
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* assigned. return -1 if an error occurs.
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*/
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int sscanf_s(const char *buffer, const char *format, ...) {
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int ret; /* If initialization causes e838 */
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va_list argList;
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va_start(argList, format);
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ret = vsscanf_s(buffer, format, argList);
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va_end(argList);
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(void)argList; /* To clear e438 last value assigned not used , the compiler
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will optimize this code */
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return ret;
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}
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#if SECUREC_IN_KERNEL
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EXPORT_SYMBOL(sscanf_s);
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#endif
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