137 lines
4.4 KiB
C++
137 lines
4.4 KiB
C++
// Copyright 2014 Citra Emulator Project
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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 <array>
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#include <memory>
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#include <string>
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#include <boost/serialization/base_object.hpp>
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#include <boost/serialization/export.hpp>
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#include <boost/serialization/vector.hpp>
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#include "core/file_sys/archive_backend.h"
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#include "core/file_sys/file_backend.h"
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#include "core/hle/result.h"
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////////////////////////////////////////////////////////////////////////////////////////////////////
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// FileSys namespace
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namespace Service::FS {
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enum class MediaType : u32;
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} // namespace Service::FS
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namespace FileSys {
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enum class NCCHFilePathType : u32 {
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RomFS = 0,
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Code = 1,
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ExeFS = 2,
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};
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enum class NCCHFileOpenType : u32 {
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NCCHData = 0,
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SaveData = 1,
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};
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/// Helper function to generate a Path for NCCH archives
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Path MakeNCCHArchivePath(u64 tid, Service::FS::MediaType media_type);
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/// Helper function to generate a Path for NCCH files
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Path MakeNCCHFilePath(NCCHFileOpenType open_type, u32 content_index, NCCHFilePathType filepath_type,
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std::array<char, 8>& exefs_filepath);
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/// Archive backend for NCCH Archives (RomFS, ExeFS)
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class NCCHArchive : public ArchiveBackend {
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public:
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explicit NCCHArchive(u64 title_id, Service::FS::MediaType media_type)
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: title_id(title_id), media_type(media_type) {}
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std::string GetName() const override {
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return "NCCHArchive";
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}
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ResultVal<std::unique_ptr<FileBackend>> OpenFile(const Path& path,
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const Mode& mode) const override;
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ResultCode DeleteFile(const Path& path) const override;
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ResultCode RenameFile(const Path& src_path, const Path& dest_path) const override;
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ResultCode DeleteDirectory(const Path& path) const override;
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ResultCode DeleteDirectoryRecursively(const Path& path) const override;
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ResultCode CreateFile(const Path& path, u64 size) const override;
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ResultCode CreateDirectory(const Path& path) const override;
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ResultCode RenameDirectory(const Path& src_path, const Path& dest_path) const override;
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ResultVal<std::unique_ptr<DirectoryBackend>> OpenDirectory(const Path& path) const override;
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u64 GetFreeBytes() const override;
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protected:
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u64 title_id;
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Service::FS::MediaType media_type;
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private:
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NCCHArchive() = default;
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template <class Archive>
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void serialize(Archive& ar, const unsigned int) {
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ar& boost::serialization::base_object<ArchiveBackend>(*this);
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ar& title_id;
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ar& media_type;
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}
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friend class boost::serialization::access;
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};
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// File backend for NCCH files
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class NCCHFile : public FileBackend {
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public:
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explicit NCCHFile(std::vector<u8> buffer, std::unique_ptr<DelayGenerator> delay_generator_);
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ResultVal<std::size_t> Read(u64 offset, std::size_t length, u8* buffer) const override;
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ResultVal<std::size_t> Write(u64 offset, std::size_t length, bool flush,
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const u8* buffer) override;
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u64 GetSize() const override;
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bool SetSize(u64 size) const override;
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bool Close() const override {
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return false;
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}
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void Flush() const override {}
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private:
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std::vector<u8> file_buffer;
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NCCHFile() = default;
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template <class Archive>
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void serialize(Archive& ar, const unsigned int) {
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ar& boost::serialization::base_object<FileBackend>(*this);
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ar& file_buffer;
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}
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friend class boost::serialization::access;
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};
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/// File system interface to the NCCH archive
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class ArchiveFactory_NCCH final : public ArchiveFactory {
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public:
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explicit ArchiveFactory_NCCH();
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std::string GetName() const override {
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return "NCCH";
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}
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ResultVal<std::unique_ptr<ArchiveBackend>> Open(const Path& path, u64 program_id) override;
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ResultCode Format(const Path& path, const FileSys::ArchiveFormatInfo& format_info,
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u64 program_id) override;
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ResultVal<ArchiveFormatInfo> GetFormatInfo(const Path& path, u64 program_id) const override;
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private:
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template <class Archive>
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void serialize(Archive& ar, const unsigned int) {
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ar& boost::serialization::base_object<ArchiveFactory>(*this);
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}
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friend class boost::serialization::access;
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};
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} // namespace FileSys
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BOOST_CLASS_EXPORT_KEY(FileSys::NCCHArchive)
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BOOST_CLASS_EXPORT_KEY(FileSys::NCCHFile)
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BOOST_CLASS_EXPORT_KEY(FileSys::ArchiveFactory_NCCH)
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