1/*
2 * Copyright (c) 2022 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#include "anonymous_string.h"
17
18#include "securec.h"
19
20namespace OHOS {
21namespace DistributedHardware {
22std::string GetAnonyString(const std::string &value)
23{
24    constexpr size_t INT32_SHORT_ID_LENGTH = 20;
25    constexpr size_t INT32_PLAINTEXT_LENGTH = 4;
26    constexpr size_t INT32_MIN_ID_LENGTH = 3;
27    std::string res;
28    std::string tmpStr("******");
29    size_t strLen = value.length();
30    if (strLen < INT32_MIN_ID_LENGTH) {
31        return tmpStr;
32    }
33
34    if (strLen <= INT32_SHORT_ID_LENGTH) {
35        res += value[0];
36        res += tmpStr;
37        res += value[strLen - 1];
38    } else {
39        res.append(value, 0, INT32_PLAINTEXT_LENGTH);
40        res += tmpStr;
41        res.append(value, strLen - INT32_PLAINTEXT_LENGTH, INT32_PLAINTEXT_LENGTH);
42    }
43
44    return res;
45}
46} // namespace DistributedHardware
47} // namespace OHOS
48