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 (data == nullptr) {
37 return -1;
38 }
39 if (auto res = strcpy_s(data, src.length() + 1, src.c_str()); res != 0) {
40 delete[] data;
41 return res;
42 }
43 *dst = data;
44 return 0;
45 }
46
ConvertCString(const std::string & str,char ** sp,size_t len)47 int ConvertCString(const std::string& str, char** sp, size_t len)
48 {
49 if (str.length() > len) {
50 return -1;
51 }
52 char* data = new(std::nothrow) char[str.length() + 1]{0};
53 if (data == nullptr) {
54 return -1;
55 }
56 if (auto res = strcpy_s(data, str.length() + 1, str.c_str()); res != 0) {
57 StringUtil::DeletePointer<char>(&data);
58 return res;
59 }
60 *sp = data;
61 return 0;
62 }
63
ConvertCStringVec(const std::vector<std::string> & vec,char *** strs,size_t & len)64 int ConvertCStringVec(const std::vector<std::string>& vec, char*** strs, size_t& len)
65 {
66 if (vec.empty()) {
67 return 0;
68 }
69 len = vec.size();
70 char** data = new(std::nothrow) char* [len]{0};
71 if (data == nullptr) {
72 return 0;
73 }
74 for (size_t i = 0; i < len; i++) {
75 if (int res = ConvertCString(vec[i], &data[i]); res != 0) {
76 StringUtil::DeletePointers<char>(&data, i);
77 return res;
78 }
79 }
80 *strs = data;
81 return 0;
82 }
83
MemsetSafe(void * dest,size_t destSize)84 void MemsetSafe(void* dest, size_t destSize)
85 {
86 (void)memset_s(dest, destSize, 0, destSize);
87 }
88 } // namespace StringUtil
89 } // namespace HiviewDFX
90 } // namespace OHOS
91