1 /*
2  * Copyright (c) 2024 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 
16 #ifndef OHOS_OBJECTSTORE_ANONYMOUS_H
17 #define OHOS_OBJECTSTORE_ANONYMOUS_H
18 
19 #include <string>
20 
21 namespace OHOS {
22 namespace ObjectStore {
23 class Anonymous {
24 public:
Change(const std::string & data)25     static std::string Change(const std::string &data)
26     {
27         if (data.size() <= HEAD_SIZE) {
28             return DEFAULT_ANONYMOUS;
29         }
30         if (data.size() < MIN_SIZE) {
31             return (data.substr(0, HEAD_SIZE) + REPLACE_CHAIN);
32         }
33         return (data.substr(0, HEAD_SIZE) + REPLACE_CHAIN + data.substr(data.size() - END_SIZE, END_SIZE));
34     }
35 
36 private:
37     static constexpr size_t HEAD_SIZE = 3;
38     static constexpr size_t END_SIZE = 3;
39     static constexpr size_t MIN_SIZE = HEAD_SIZE + END_SIZE + 3;
40     static constexpr const char *REPLACE_CHAIN = "***";
41     static constexpr const char *DEFAULT_ANONYMOUS = "******";
42 };
43 } // namespace ObjectStore
44 } // namespace OHOS
45 #endif // OHOS_OBJECTSTORE_ANONYMOUS_H