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#pragma once
#include "BlockReader.h"
#include <filesystem>
#include <map>
#include <memory>
#include <optional>
#include <string>
#include <vector>
namespace GC {
struct FstEntry {
uint64_t offset;
uint32_t size;
};
class IDiscFileSystem {
public:
virtual ~IDiscFileSystem() = default;
virtual bool Exists(const std::string& path) = 0;
virtual std::vector<uint8_t> ReadFile(const std::string& path) = 0;
virtual std::string GetGameId() = 0;
virtual uint8_t GetRevision() = 0;
};
class GcmDisc : public IDiscFileSystem {
public:
static constexpr uint32_t MAGIC = 0xC2339F3D;
static constexpr uint32_t BOOT_SIZE = 0x440;
explicit GcmDisc(std::shared_ptr<IBlockReader> reader);
bool Exists(const std::string& path) override;
std::vector<uint8_t> ReadFile(const std::string& path) override;
std::string GetGameId() override { return mGameId; }
uint8_t GetRevision() override { return mRevision; }
const std::map<std::string, FstEntry>& GetFiles() const { return mFiles; }
static bool Probe(IBlockReader& reader);
private:
void ParseFst(const std::vector<uint8_t>& fst);
uint32_t GetDolSize();
std::shared_ptr<IBlockReader> mReader;
std::string mGameId;
uint8_t mRevision;
uint32_t mDolOffset;
uint32_t mFstOffset;
uint32_t mFstSize;
std::map<std::string, FstEntry> mFiles;
};
class FolderDisc : public IDiscFileSystem {
public:
explicit FolderDisc(std::filesystem::path root);
bool Exists(const std::string& path) override;
std::vector<uint8_t> ReadFile(const std::string& path) override;
std::string GetGameId() override;
uint8_t GetRevision() override;
static bool Probe(const std::filesystem::path& root);
private:
std::filesystem::path mRoot;
std::optional<std::vector<uint8_t>> mBoot;
void LoadBoot();
};
uint32_t DolFileSize(const uint8_t* header);
} // namespace GC
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