1 /* 2 * Copyright (C) 2018 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #pragma once 18 19 namespace android { 20 namespace vintf { 21 22 class PropertyFetcher { 23 public: 24 virtual ~PropertyFetcher() = default; 25 virtual std::string getProperty(const std::string& key, 26 const std::string& defaultValue = "") const = 0; 27 virtual uint64_t getUintProperty(const std::string& key, uint64_t defaultValue, 28 uint64_t max = UINT64_MAX) const = 0; 29 virtual bool getBoolProperty(const std::string& key, bool defaultValue) const = 0; 30 }; 31 32 } // namespace vintf 33 } // namespace android 34