1 /*
2 * Copyright (c) 2021 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15 #include "string_util.h"
16
17 #include "securec.h"
18
19 namespace OHOS {
20 namespace HiviewDFX {
21 namespace StringUtil {
CopyCString(char * dst,const std::string & src,size_t len)22 int CopyCString(char* dst, const std::string& src, size_t len)
23 {
24 if (src.length() > len) {
25 return -1;
26 }
27 return strcpy_s(dst, src.length() + 1, src.c_str());
28 }
29
CreateCString(char ** dst,const std::string & src,size_t len)30 int CreateCString(char** dst, const std::string& src, size_t len)
31 {
32 if (src.length() > len) {
33 return -1;
34 }
35 char* data = new(std::nothrow) char[src.length() + 1]{0};
36 if (auto res = strcpy_s(data, src.length() + 1, src.c_str()); res != 0) {
37 delete[] data;
38 return res;
39 }
40 *dst = data;
41 return 0;
42 }
43
ConvertCString(const std::string & str,char ** sp,size_t len)44 int ConvertCString(const std::string& str, char** sp, size_t len)
45 {
46 if (str.length() > len) {
47 return -1;
48 }
49 char* data = new(std::nothrow) char[str.length() + 1]{0};
50 if (auto res = strcpy_s(data, str.length() + 1, str.c_str()); res != 0) {
51 StringUtil::DeletePointer<char>(&data);
52 return res;
53 }
54 *sp = data;
55 return 0;
56 }
57
ConvertCStringVec(const std::vector<std::string> & vec,char *** strs,size_t & len)58 int ConvertCStringVec(const std::vector<std::string>& vec, char*** strs, size_t& len)
59 {
60 if (vec.empty()) {
61 return 0;
62 }
63 len = vec.size();
64 char** data = new(std::nothrow) char* [len]{0};
65 for (size_t i = 0; i < len; i++) {
66 if (int res = ConvertCString(vec[i], &data[i]); res != 0) {
67 StringUtil::DeletePointers<char>(&data, i);
68 return res;
69 }
70 }
71 *strs = data;
72 return 0;
73 }
74
MemsetSafe(void * dest,size_t destSize)75 void MemsetSafe(void* dest, size_t destSize)
76 {
77 (void)memset_s(dest, destSize, 0, destSize);
78 }
79 } // namespace StringUtil
80 } // namespace HiviewDFX
81 } // namespace OHOS
82