1 /* 2 * Copyright (c) 2025 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 INTERFACES_KITS_JS_SRC_MOD_FS_CLASS_ATOMICFILE_FS_ATOMICFILE_H 17 #define INTERFACES_KITS_JS_SRC_MOD_FS_CLASS_ATOMICFILE_FS_ATOMICFILE_H 18 19 #include "fs_atomicfile_entity.h" 20 #include "fs_file.h" 21 22 namespace OHOS { 23 namespace FileManagement { 24 namespace ModuleFileIO { 25 using namespace std; 26 27 struct BufferData { 28 uint8_t *buffer = nullptr; 29 size_t length = 0; 30 ~BufferDataBufferData31 ~BufferData() 32 { 33 delete[] buffer; 34 } 35 }; 36 37 class FsAtomicFile final { 38 public: 39 FsAtomicFileEntity *GetEntity(); 40 static FsResult<FsAtomicFile *> Constructor(string path); 41 string GetPath(); 42 FsResult<FsFile *> GetBaseFile(); 43 FsResult<unique_ptr<BufferData>> ReadFully(); 44 FsResult<string> StartWrite(); 45 FsResult<void> FinishWrite(); 46 FsResult<void> FailWrite(); 47 FsResult<void> Delete(); 48 static void FinalizeCallback(void *finalizeData, [[maybe_unused]] void *finalizeHint); 49 50 private: 51 unique_ptr<FsAtomicFileEntity> entity; FsAtomicFile(unique_ptr<FsAtomicFileEntity> entity)52 explicit FsAtomicFile(unique_ptr<FsAtomicFileEntity> entity) : entity(move(entity)) {} 53 }; 54 } // namespace ModuleFileIO 55 } // namespace FileManagement 56 } // namespace OHOS 57 #endif // INTERFACES_KITS_JS_SRC_MOD_FS_CLASS_ATOMICFILE_FS_ATOMICFILE_H