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// Copyright 2018 yuzu emulator team
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <memory>
#include "common/common_types.h"
#include "core/file_sys/filesystem.h"
#include "core/file_sys/vfs.h"
#include "core/hle/result.h"
namespace FileSys {
class FileSystemBackend;
class FileSystemFactory;
class Path;
} // namespace FileSys
namespace Service {
namespace SM {
class ServiceManager;
} // namespace SM
namespace FileSystem {
/// Supported FileSystem types
enum class Type {
RomFS = 1,
SaveData = 2,
SDMC = 3,
};
// A class that wraps a VfsDirectory with methods that return ResultVal and ResultCode instead of
// pointers and booleans. This makes using a VfsDirectory with switch services much easier and
// avoids repetitive code.
class VfsDirectoryServiceWrapper {
public:
explicit VfsDirectoryServiceWrapper(FileSys::VirtualDir backing);
/**
* Get a descriptive name for the archive (e.g. "RomFS", "SaveData", etc.)
*/
std::string GetName() const;
/**
* Create a file specified by its path
* @param path Path relative to the Archive
* @param size The size of the new file, filled with zeroes
* @return Result of the operation
*/
ResultCode CreateFile(const std::string& path, u64 size) const;
/**
* Delete a file specified by its path
* @param path Path relative to the archive
* @return Result of the operation
*/
ResultCode DeleteFile(const std::string& path) const;
/**
* Create a directory specified by its path
* @param path Path relative to the archive
* @return Result of the operation
*/
ResultCode CreateDirectory(const std::string& path) const;
/**
* Delete a directory specified by its path
* @param path Path relative to the archive
* @return Result of the operation
*/
ResultCode DeleteDirectory(const std::string& path) const;
/**
* Delete a directory specified by its path and anything under it
* @param path Path relative to the archive
* @return Result of the operation
*/
ResultCode DeleteDirectoryRecursively(const std::string& path) const;
/**
* Rename a File specified by its path
* @param src_path Source path relative to the archive
* @param dest_path Destination path relative to the archive
* @return Result of the operation
*/
ResultCode RenameFile(const std::string& src_path, const std::string& dest_path) const;
/**
* Rename a Directory specified by its path
* @param src_path Source path relative to the archive
* @param dest_path Destination path relative to the archive
* @return Result of the operation
*/
ResultCode RenameDirectory(const std::string& src_path, const std::string& dest_path) const;
/**
* Open a file specified by its path, using the specified mode
* @param path Path relative to the archive
* @param mode Mode to open the file with
* @return Opened file, or error code
*/
ResultVal<FileSys::VirtualFile> OpenFile(const std::string& path, FileSys::Mode mode) const;
/**
* Open a directory specified by its path
* @param path Path relative to the archive
* @return Opened directory, or error code
*/
ResultVal<FileSys::VirtualDir> OpenDirectory(const std::string& path);
/**
* Get the free space
* @return The number of free bytes in the archive
*/
u64 GetFreeSpaceSize() const;
/**
* Get the type of the specified path
* @return The type of the specified path or error code
*/
ResultVal<FileSys::EntryType> GetEntryType(const std::string& path) const;
private:
FileSys::VirtualDir backing;
};
// A class that deferres the creation of a filesystem until a later time.
// This is useful if construction depends on a variable not known when the filesystem is registered.
// Construct this with a filesystem (VirtualDir) to avoid the deferrence feature or override the
// CreateFilesystem method which will be called on first use.
struct DeferredFilesystem {
DeferredFilesystem() = default;
explicit DeferredFilesystem(FileSys::VirtualDir vfs_directory) : fs(std::move(vfs_directory)) {}
FileSys::VirtualDir Get() {
if (fs == nullptr)
fs = CreateFilesystem();
return fs;
}
virtual ~DeferredFilesystem() = default;
protected:
virtual FileSys::VirtualDir CreateFilesystem() {
return fs;
}
private:
FileSys::VirtualDir fs;
};
/**
* Registers a FileSystem, instances of which can later be opened using its IdCode.
* @param factory FileSystem backend interface to use
* @param type Type used to access this type of FileSystem
*/
ResultCode RegisterFileSystem(std::unique_ptr<DeferredFilesystem>&& fs, Type type);
ResultCode RegisterRomFS(FileSys::VirtualFile fs);
/**
* Opens a file system
* @param type Type of the file system to open
* @param path Path to the file system, used with Binary paths
* @return FileSys::FileSystemBackend interface to the file system
*/
ResultVal<FileSys::VirtualDir> OpenFileSystem(Type type);
ResultVal<FileSys::VirtualFile> OpenRomFS();
/**
* Formats a file system
* @param type Type of the file system to format
* @return ResultCode of the operation
*/
ResultCode FormatFileSystem(Type type);
/// Registers all Filesystem services with the specified service manager.
void InstallInterfaces(SM::ServiceManager& service_manager);
} // namespace FileSystem
} // namespace Service
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