LocalFile.hh

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#ifndef LOCALFILE_HH
#define LOCALFILE_HH
 
#if defined _WIN32
#include <windows.h>
#endif
#include "File.hh"
#include "FileBase.hh"
#include "FileOperations.hh"
#include "PreCacheFile.hh"
#include "systemfuncs.hh"
#include <cstdio>
#include <optional>
 
namespace openmsx {
 
class LocalFile final : public FileBase
{
public:
        LocalFile(std::string filename, File::OpenMode mode);
        LocalFile(std::string filename, const char* mode);
        ~LocalFile() override;
        void read(std::span<uint8_t> buffer) override;
        void write(std::span<const uint8_t> buffer) override;
#if HAVE_MMAP || defined _WIN32
        [[nodiscard]] std::span<const uint8_t> mmap() override;
        void munmap() override;
#endif
        [[nodiscard]] size_t getSize() override;
        void seek(size_t pos) override;
        [[nodiscard]] size_t getPos() override;
#if HAVE_FTRUNCATE
        void truncate(size_t size) override;
#endif
        void flush() override;
        [[nodiscard]] const std::string& getURL() const override;
        [[nodiscard]] std::string getLocalReference() override;
        [[nodiscard]] bool isReadOnly() const override;
        [[nodiscard]] time_t getModificationDate() override;
 
        void preCacheFile();
 
private:
        std::string filename;
        FileOperations::FILE_t file;
#if HAVE_MMAP
        uint8_t* mmem = nullptr;
#endif
#if defined _WIN32
        uint8_t* mmem = nullptr;
        HANDLE hMmap = nullptr;
#endif
        std::optional<PreCacheFile> cache;
        bool readOnly = false;
};
 
} // namespace openmsx
 
#endif