// Copyright 2018 yuzu emulator team
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <cstddef>
#include <memory>
#include <string>
#include <vector>
#include "common/common_types.h"
#include "common/file_util.h"
#include "core/file_sys/directory.h"
#include "core/file_sys/filesystem.h"
#include "core/file_sys/storage.h"
#include "core/hle/result.h"
namespace FileSys {
/**
* Helper which implements an interface to deal with Switch .istorage ROMFS images used in some
* archives This should be subclassed by concrete archive types, which will provide the input data
* (load the raw ROMFS archive) and override any required methods
*/
class RomFS_FileSystem : public FileSystemBackend {
public:
RomFS_FileSystem(std::shared_ptr<FileUtil::IOFile> file, u64 offset, u64 size)
: romfs_file(file), data_offset(offset), data_size(size) {}
std::string GetName() const override;
ResultVal<std::unique_ptr<StorageBackend>> OpenFile(const std::string& path,
Mode mode) const override;
ResultCode DeleteFile(const std::string& path) const override;
ResultCode RenameFile(const Path& src_path, const Path& dest_path) const override;
ResultCode DeleteDirectory(const Path& path) const override;
ResultCode DeleteDirectoryRecursively(const Path& path) const override;
ResultCode CreateFile(const std::string& path, u64 size) const override;
ResultCode CreateDirectory(const std::string& path) const override;
ResultCode RenameDirectory(const Path& src_path, const Path& dest_path) const override;
ResultVal<std::unique_ptr<DirectoryBackend>> OpenDirectory(
const std::string& path) const override;
u64 GetFreeSpaceSize() const override;
ResultVal<EntryType> GetEntryType(const std::string& path) const override;
protected:
std::shared_ptr<FileUtil::IOFile> romfs_file;
u64 data_offset;
u64 data_size;
};
class RomFS_Storage : public StorageBackend {
public:
RomFS_Storage(std::shared_ptr<FileUtil::IOFile> file, u64 offset, u64 size)
: romfs_file(file), data_offset(offset), data_size(size) {}
ResultVal<size_t> Read(u64 offset, size_t length, u8* buffer) const override;
ResultVal<size_t> Write(u64 offset, size_t length, bool flush, const u8* buffer) const override;
u64 GetSize() const override;
bool SetSize(u64 size) const override;
bool Close() const override {
return false;
}
void Flush() const override {}
private:
std::shared_ptr<FileUtil::IOFile> romfs_file;
u64 data_offset;
u64 data_size;
};
class ROMFSDirectory : public DirectoryBackend {
public:
u64 Read(const u64 count, Entry* entries) override {
return 0;
}
u64 GetEntryCount() const override {
return 0;
}
bool Close() const override {
return false;
}
};
} // namespace FileSys
