1 /* 2 * Copyright (c) 2023 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_ABILITY_BASE_FILE_MAPPER_H 17 #define OHOS_ABILITY_BASE_FILE_MAPPER_H 18 19 #include <memory> 20 #include <string> 21 22 namespace panda { 23 namespace ecmascript { 24 class ZipFileReader; 25 enum class FileMapperType { 26 NORMAL_MEM, 27 SHARED_MMAP, 28 SAFE_ABC 29 }; 30 class FileMapper { 31 public: 32 FileMapper(); 33 FileMapper(FileMapper &) = delete; 34 void operator=(FileMapper &) = delete; 35 ~FileMapper(); 36 37 bool CreateFileMapper(const std::string &fileName, bool compress, 38 int32_t fd, size_t offset, size_t len, FileMapperType type); 39 40 bool CreateFileMapper(std::shared_ptr<ZipFileReader> fileReader, const std::string &fileName, 41 size_t offset, size_t len, bool compress); 42 43 bool IsCompressed(); 44 uint8_t* GetDataPtr(); 45 size_t GetDataLen(); 46 std::string GetFileName(); 47 int32_t GetOffset(); 48 private: 49 std::string fileName_; 50 bool isCompressed = false; 51 52 std::unique_ptr<uint8_t[]> dataPtr_ = nullptr; 53 size_t dataLen_ = 0; 54 size_t offset_ = 0; 55 56 uint8_t* basePtr_ = nullptr; 57 uint8_t* usePtr_ = nullptr; 58 size_t baseLen_ = 0; 59 FileMapperType type_ = FileMapperType::NORMAL_MEM; 60 }; 61 } // namespace AbilityBase 62 } // namespace OHOS 63 #endif // OHOS_ABILITY_BASE_FILE_MAPPER_H