57 lines
1.9 KiB
C
57 lines
1.9 KiB
C
/*
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* Copyright (c) Huawei Technologies Co., Ltd. 2014-2018. All rights reserved.
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* Description: vfscanf_s function
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* Author: lishunda
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* Create: 2014-02-25
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*/
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#define SECUREC_INLINE_INIT_FILE_STREAM_FILE 1
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#include "secinput.h"
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/*
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* <FUNCTION DESCRIPTION>
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* The vfscanf_s function is equivalent to fscanf_s, with the variable
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* argument list replaced by argList The vfscanf_s function reads data from the
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* current position of stream into the locations given by argument (if any).
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* Each argument must be a pointer to a variable of a type that corresponds to a
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* type specifier in format. format controls the interpretation of the input
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* fields and has the same form and function as the format argument for scanf.
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*
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* <INPUT PARAMETERS>
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* stream Pointer to FILE structure.
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* format Format control string, see Format Specifications.
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* argList pointer to list of arguments
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*
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* <OUTPUT PARAMETERS>
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* argList 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 vfscanf_s(FILE *stream, const char *format, va_list argList) {
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int retVal; /* If initialization causes e838 */
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SecFileStream fStr;
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if (stream == NULL || format == NULL) {
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SECUREC_ERROR_INVALID_PARAMTER("vfscanf_s");
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return SECUREC_SCANF_EINVAL;
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}
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if (stream == SECUREC_STREAM_STDIN) {
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return vscanf_s(format, argList);
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}
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SECUREC_LOCK_FILE(stream);
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SecInitFileStreamFromFile(&fStr, stream);
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retVal = SecInputS(&fStr, format, argList);
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SECUREC_UNLOCK_FILE(stream);
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if (retVal < 0) {
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SECUREC_ERROR_INVALID_PARAMTER("vfscanf_s");
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return SECUREC_SCANF_EINVAL;
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}
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return retVal;
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}
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