52 lines
1.8 KiB
C
52 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 buffer) rather than from a stream
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* The sscanf function reads data from buffer into the location given by each
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* argument. Every argument must be a pointer to a variable with a type that
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* corresponds to a type specifier in format. The format argument controls the
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* interpretation of the input fields and has the same form and function as
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* the format argument for the scanf function.
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* If 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 converted
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* and assigned; the return value does not include fields that were read but
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* not assigned.
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* A return value of 0 indicates that no fields were assigned.
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* 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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{
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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 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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