120 lines
4.7 KiB
C++
120 lines
4.7 KiB
C++
// Copyright 2018 yuzu emulator team
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#pragma once
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#include <string_view>
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#include <boost/container/flat_map.hpp>
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#include "core/file_sys/mode.h"
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#include "core/file_sys/vfs.h"
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namespace FileUtil {
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class IOFile;
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}
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namespace FileSys {
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class RealVfsFilesystem : public VfsFilesystem {
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public:
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RealVfsFilesystem();
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~RealVfsFilesystem() override;
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std::string GetName() const override;
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bool IsReadable() const override;
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bool IsWritable() const override;
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VfsEntryType GetEntryType(std::string_view path) const override;
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VirtualFile OpenFile(std::string_view path, Mode perms = Mode::Read) override;
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VirtualFile CreateFile(std::string_view path, Mode perms = Mode::ReadWrite) override;
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VirtualFile CopyFile(std::string_view old_path, std::string_view new_path) override;
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VirtualFile MoveFile(std::string_view old_path, std::string_view new_path) override;
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bool DeleteFile(std::string_view path) override;
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VirtualDir OpenDirectory(std::string_view path, Mode perms = Mode::Read) override;
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VirtualDir CreateDirectory(std::string_view path, Mode perms = Mode::ReadWrite) override;
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VirtualDir CopyDirectory(std::string_view old_path, std::string_view new_path) override;
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VirtualDir MoveDirectory(std::string_view old_path, std::string_view new_path) override;
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bool DeleteDirectory(std::string_view path) override;
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private:
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boost::container::flat_map<std::string, std::weak_ptr<FileUtil::IOFile>> cache;
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};
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// An implmentation of VfsFile that represents a file on the user's computer.
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class RealVfsFile : public VfsFile {
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friend class RealVfsDirectory;
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friend class RealVfsFilesystem;
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public:
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~RealVfsFile() override;
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std::string GetName() const override;
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std::size_t GetSize() const override;
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bool Resize(std::size_t new_size) override;
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std::shared_ptr<VfsDirectory> GetContainingDirectory() const override;
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bool IsWritable() const override;
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bool IsReadable() const override;
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std::size_t Read(u8* data, std::size_t length, std::size_t offset) const override;
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std::size_t Write(const u8* data, std::size_t length, std::size_t offset) override;
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bool Rename(std::string_view name) override;
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private:
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RealVfsFile(RealVfsFilesystem& base, std::shared_ptr<FileUtil::IOFile> backing,
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const std::string& path, Mode perms = Mode::Read);
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bool Close();
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RealVfsFilesystem& base;
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std::shared_ptr<FileUtil::IOFile> backing;
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std::string path;
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std::string parent_path;
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std::vector<std::string> path_components;
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std::vector<std::string> parent_components;
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Mode perms;
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};
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// An implementation of VfsDirectory that represents a directory on the user's computer.
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class RealVfsDirectory : public VfsDirectory {
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friend class RealVfsFilesystem;
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public:
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~RealVfsDirectory() override;
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std::shared_ptr<VfsFile> GetFileRelative(std::string_view path) const override;
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std::shared_ptr<VfsDirectory> GetDirectoryRelative(std::string_view path) const override;
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std::shared_ptr<VfsFile> GetFile(std::string_view name) const override;
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std::shared_ptr<VfsDirectory> GetSubdirectory(std::string_view name) const override;
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std::shared_ptr<VfsFile> CreateFileRelative(std::string_view path) override;
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std::shared_ptr<VfsDirectory> CreateDirectoryRelative(std::string_view path) override;
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bool DeleteSubdirectoryRecursive(std::string_view name) override;
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std::vector<std::shared_ptr<VfsFile>> GetFiles() const override;
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std::vector<std::shared_ptr<VfsDirectory>> GetSubdirectories() const override;
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bool IsWritable() const override;
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bool IsReadable() const override;
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std::string GetName() const override;
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std::shared_ptr<VfsDirectory> GetParentDirectory() const override;
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std::shared_ptr<VfsDirectory> CreateSubdirectory(std::string_view name) override;
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std::shared_ptr<VfsFile> CreateFile(std::string_view name) override;
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bool DeleteSubdirectory(std::string_view name) override;
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bool DeleteFile(std::string_view name) override;
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bool Rename(std::string_view name) override;
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std::string GetFullPath() const override;
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std::map<std::string, VfsEntryType> GetEntries() const override;
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protected:
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bool ReplaceFileWithSubdirectory(VirtualFile file, VirtualDir dir) override;
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private:
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RealVfsDirectory(RealVfsFilesystem& base, const std::string& path, Mode perms = Mode::Read);
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template <typename T, typename R>
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std::vector<std::shared_ptr<R>> IterateEntries() const;
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RealVfsFilesystem& base;
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std::string path;
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std::string parent_path;
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std::vector<std::string> path_components;
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std::vector<std::string> parent_components;
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Mode perms;
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};
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} // namespace FileSys
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