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 PREFERENCES_UTILS_H 17 #define PREFERENCES_UTILS_H 18 19 #include <string> 20 21 #include "preferences_value.h" 22 23 namespace OHOS { 24 namespace NativePreferences { 25 /** 26 * @brief The constant Indicates the maximum length of the key in the preferences. 27 */ 28 static constexpr uint32_t MAX_KEY_LENGTH = 1024; 29 /** 30 * @brief The constant Indicates the maximum length of the value in the preferences. 31 */ 32 static constexpr uint32_t MAX_VALUE_LENGTH = 16 * 1024 * 1024; 33 34 static const char *STR_BROKEN = ".broken"; 35 static const char *STR_BACKUP = ".bak"; 36 static const char *STR_LOCK = ".lock"; 37 static const char *STR_QUERY = "?"; 38 static const char *STR_SLASH = "/"; 39 static const char *STR_SCHEME = "sharepreferences://"; 40 41 std::string MakeFilePath(const std::string &prefPath, const std::string &suffix); 42 43 int CheckKey(const std::string &key); 44 45 int CheckValue(const PreferencesValue &value); 46 } // End of namespace NativePreferences 47 } // End of namespace OHOS 48 #endif // End of #ifndef PREFERENCES_H 49