1 /*
2 * Copyright (c) Huawei Technologies Co., Ltd. 2014-2021. All rights reserved.
3 * Licensed under Mulan PSL v2.
4 * You can use this software according to the terms and conditions of the Mulan PSL v2.
5 * You may obtain a copy of Mulan PSL v2 at:
6 * http://license.coscl.org.cn/MulanPSL2
7 * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
8 * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
9 * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
10 * See the Mulan PSL v2 for more details.
11 * Description: vswprintf_s function
12 * Create: 2014-02-25
13 */
14
15 #ifndef SECUREC_FOR_WCHAR
16 #define SECUREC_FOR_WCHAR
17 #endif
18
19 #include "secureprintoutput.h"
20
21 /*
22 * <FUNCTION DESCRIPTION>
23 * The vswprintf_s function is the wide-character equivalent of the vsprintf_s function
24 *
25 * <INPUT PARAMETERS>
26 * strDest Storage location for the output.
27 * destMax Maximum number of characters to store
28 * format Format specification.
29 * argList pointer to list of arguments
30 *
31 * <OUTPUT PARAMETERS>
32 * strDest is updated
33 *
34 * <RETURN VALUE>
35 * return the number of wide characters stored in strDest, not counting the terminating null wide character.
36 * return -1 if an error occurred.
37 *
38 * If there is a runtime-constraint violation, strDest[0] will be set to the '\0' when strDest and destMax valid
39 */
vswprintf_s(wchar_t * strDest,size_t destMax,const wchar_t * format,va_list argList)40 int vswprintf_s(wchar_t *strDest, size_t destMax, const wchar_t *format, va_list argList)
41 {
42 int retVal; /* If initialization causes e838 */
43 if (SECUREC_VSPRINTF_PARAM_ERROR(format, strDest, destMax, SECUREC_WCHAR_STRING_MAX_LEN)) {
44 SECUREC_VSPRINTF_CLEAR_DEST(strDest, destMax, SECUREC_WCHAR_STRING_MAX_LEN);
45 SECUREC_ERROR_INVALID_PARAMTER("vswprintf_s");
46 return -1;
47 }
48
49 retVal = SecVswprintfImpl(strDest, destMax, format, argList);
50 if (retVal < 0) {
51 strDest[0] = L'\0';
52 if (retVal == SECUREC_PRINTF_TRUNCATE) {
53 /* Buffer too small */
54 SECUREC_ERROR_INVALID_RANGE("vswprintf_s");
55 }
56 SECUREC_ERROR_INVALID_PARAMTER("vswprintf_s");
57 return -1;
58 }
59
60 return retVal;
61 }
62
63