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// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
// SPDX-License-Identifier: GPL-3.0-or-later
// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
#include <optional>
#include <string>
#include "common/common_types.h"
#include "core/file_sys/control_metadata.h"
#include "core/file_sys/program_metadata.h"
#include "core/loader/loader.h"
namespace Core {
class System;
}
namespace Loader {
/**
* This class loads a "deconstructed ROM directory", which are the typical format we see for Switch
* game dumps. The path should be a "main" NSO, which must be in a directory that contains the other
* standard ExeFS NSOs (e.g. rtld, sdk, etc.). It will automatically find and load these.
* Furthermore, it will look for the first .romfs file (optionally) and use this for the RomFS.
*/
class AppLoader_DeconstructedRomDirectory final : public AppLoader {
public:
explicit AppLoader_DeconstructedRomDirectory(FileSys::VirtualFile main_file, bool override_update_ = false);
// Overload to accept exefs directory. Must contain 'main' and 'main.npdm'
explicit AppLoader_DeconstructedRomDirectory(FileSys::VirtualDir directory, bool override_update_ = false);
/**
* Identifies whether or not the given file is a deconstructed ROM directory.
*
* @param dir_file The file to verify.
*
* @return FileType::DeconstructedRomDirectory, or FileType::Error
* if the file is not a deconstructed ROM directory.
*/
static FileType IdentifyType(const FileSys::VirtualFile& dir_file);
FileType GetFileType() const override {
return IdentifyType(file);
}
LoadResult Load(Kernel::KProcess& process, Core::System& system) override;
ResultStatus ReadRomFS(FileSys::VirtualFile& out_dir) override;
ResultStatus ReadIcon(std::vector<u8>& out_buffer) override;
ResultStatus ReadProgramId(u64& out_program_id) override;
ResultStatus ReadTitle(std::string& title) override;
ResultStatus ReadControlData(FileSys::NACP& control) override;
ResultStatus ReadDisplayVersion(std::string& version) override;
bool IsRomFSUpdatable() const override;
ResultStatus ReadNSOModules(Modules& out_modules) override;
private:
/// The loose RomFS next to the ExeFS, found (and built) on first use.
const FileSys::VirtualFile& LooseRomFS();
FileSys::ProgramMetadata metadata;
FileSys::VirtualFile romfs;
FileSys::VirtualDir romfs_exefs_dir; ///< Where LooseRomFS looks
bool romfs_resolved{};
FileSys::VirtualDir dir;
std::vector<u8> icon_data;
std::string name;
std::optional<FileSys::NACP> control; ///< control.nacp next to the dump, if it has one
std::string romfs_version; ///< "1.8.0" from the RomFS's Product.180 tables, if any
u64 title_id{};
bool override_update;
Modules modules;
};
} // namespace Loader
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