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__ROFS_FILESYSTEM_H 17 #define CORE__IO__ROFS_FILESYSTEM_H 18 19 #include <base/containers/array_view.h> 20 #include <base/containers/string.h> 21 #include <base/containers/string_view.h> 22 #include <base/containers/unordered_map.h> 23 #include <base/containers/vector.h> 24 #include <core/io/intf_directory.h> 25 #include <core/io/intf_file_system.h> 26 #include <core/namespace.h> 27 CORE_BEGIN_NAMESPACE()28CORE_BEGIN_NAMESPACE() 29 /** Rofs protocol. 30 * Protocol implementation that wraps a RO constant buffer in memory. 31 */ 32 class RoFileSystem final : public IFilesystem { 33 public: 34 RoFileSystem(const void* const blob, size_t blobSize); 35 ~RoFileSystem() override = default; 36 RoFileSystem(RoFileSystem const&) = delete; 37 RoFileSystem& operator=(RoFileSystem const&) = delete; 38 39 IDirectory::Entry GetEntry(BASE_NS::string_view uri) override; 40 IFile::Ptr OpenFile(BASE_NS::string_view path) override; 41 IFile::Ptr CreateFile(BASE_NS::string_view path) override; 42 bool DeleteFile(BASE_NS::string_view path) override; 43 44 IDirectory::Ptr OpenDirectory(BASE_NS::string_view path) override; 45 IDirectory::Ptr CreateDirectory(BASE_NS::string_view path) override; 46 bool DeleteDirectory(BASE_NS::string_view path) override; 47 48 bool Rename(BASE_NS::string_view fromPath, BASE_NS::string_view toPath) override; 49 50 BASE_NS::vector<BASE_NS::string> GetUriPaths(BASE_NS::string_view uri) const override; 51 52 protected: 53 void Destroy() override 54 { 55 delete this; 56 } 57 58 private: 59 BASE_NS::unordered_map<BASE_NS::string, BASE_NS::vector<IDirectory::Entry>> directories_; 60 BASE_NS::unordered_map<BASE_NS::string, BASE_NS::array_view<const uint8_t>> files_; 61 }; 62 CORE_END_NAMESPACE() 63 64 #endif // CORE__IO__ROFS_FILESYSTEM_H 65