1 /* 2 * Copyright (c) 2024 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__STD_FILESYSTEM_H 17 #define CORE__IO__STD_FILESYSTEM_H 18 19 #include <base/containers/string.h> 20 #include <base/containers/string_view.h> 21 #include <base/containers/vector.h> 22 #include <base/namespace.h> 23 #include <core/io/intf_directory.h> 24 #include <core/io/intf_file.h> 25 #include <core/io/intf_file_system.h> 26 #include <core/namespace.h> 27 CORE_BEGIN_NAMESPACE()28CORE_BEGIN_NAMESPACE() 29 /** File protocol. 30 * Protocol implementation that wraps standard file i/o. 31 */ 32 class StdFilesystem final : public IFilesystem { 33 public: 34 // base path must be absolute, start with a "/" and on windows contain the drive letter "c:". 35 // and should end on a "/". must use a "/" as directory separator. 36 explicit StdFilesystem(BASE_NS::string_view basePath); 37 ~StdFilesystem() override = default; 38 StdFilesystem(StdFilesystem const&) = delete; 39 StdFilesystem& operator=(StdFilesystem const&) = delete; 40 41 // All uris should be absolute, and are considered such. (should start with "/") 42 IDirectory::Entry GetEntry(BASE_NS::string_view uri) override; 43 IFile::Ptr OpenFile(BASE_NS::string_view path) override; 44 IFile::Ptr CreateFile(BASE_NS::string_view path) override; 45 bool DeleteFile(BASE_NS::string_view path) override; 46 47 IDirectory::Ptr OpenDirectory(BASE_NS::string_view path) override; 48 IDirectory::Ptr CreateDirectory(BASE_NS::string_view path) override; 49 bool DeleteDirectory(BASE_NS::string_view path) override; 50 51 bool Rename(BASE_NS::string_view fromPath, BASE_NS::string_view toPath) override; 52 53 BASE_NS::vector<BASE_NS::string> GetUriPaths(BASE_NS::string_view uri) const override; 54 55 protected: 56 BASE_NS::string ValidatePath(BASE_NS::string_view path) const; 57 void Destroy() override 58 { 59 delete this; 60 } 61 BASE_NS::string basePath_; 62 }; 63 CORE_END_NAMESPACE() 64 65 #endif // CORE__IO__STD_FILESYSTEM_H 66