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 CORE__IO__MEMORY_FILESYSTEM_H 17 #define CORE__IO__MEMORY_FILESYSTEM_H 18 19 #include <base/containers/unordered_map.h> 20 #include <core/io/intf_file_system.h> 21 #include <core/namespace.h> 22 23 #include "memory_file.h" 24 CORE_BEGIN_NAMESPACE()25CORE_BEGIN_NAMESPACE() 26 27 /** Memory protocol. 28 * Protocol implementation that wraps a buffer in memory. 29 */ 30 class MemoryFilesystem final : public IFilesystem { 31 public: 32 MemoryFilesystem() = default; 33 ~MemoryFilesystem() override = default; 34 MemoryFilesystem(MemoryFilesystem const&) = delete; 35 MemoryFilesystem& operator=(MemoryFilesystem const&) = delete; 36 37 IDirectory::Entry GetEntry(BASE_NS::string_view uri) override; 38 IFile::Ptr OpenFile(BASE_NS::string_view path) override; 39 IFile::Ptr CreateFile(BASE_NS::string_view path) override; 40 bool DeleteFile(BASE_NS::string_view path) override; 41 42 IDirectory::Ptr OpenDirectory(BASE_NS::string_view path) override; 43 IDirectory::Ptr CreateDirectory(BASE_NS::string_view path) override; 44 bool DeleteDirectory(BASE_NS::string_view path) override; 45 46 bool Rename(BASE_NS::string_view fromPath, BASE_NS::string_view toPath) override; 47 48 BASE_NS::vector<BASE_NS::string> GetUriPaths(BASE_NS::string_view uri) const override; 49 50 protected: 51 void Destroy() override 52 { 53 delete this; 54 } 55 56 private: 57 BASE_NS::unordered_map<BASE_NS::string, std::weak_ptr<MemoryFileStorage>> memoryFiles_; 58 }; 59 CORE_END_NAMESPACE() 60 61 #endif // CORE__IO__MEMORY_FILESYSTEM_H 62