id3genres.h

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#ifndef TAG_PARSER_ID3GENRES_H
#define TAG_PARSER_ID3GENRES_H
 
#include "../global.h"
 
#include <cstdint>
#include <string_view>
 
namespace TagParser {
 
class TAG_PARSER_EXPORT Id3Genres {
public:
    static inline std::string_view stringFromIndex(int index);
    static int indexFromString(std::string_view genre);
    static constexpr int genreCount();
    static constexpr int emptyGenreIndex();
    static constexpr bool isEmptyGenre(int index);
    static constexpr bool isIndexSupported(int index);
 
private:
    static const std::string_view *genreNames();
};

inline std::string_view Id3Genres::stringFromIndex(int index)
{
    return isIndexSupported(index) ? genreNames()[index] : std::string_view();
}

constexpr int Id3Genres::genreCount()
{
    return 192;
}

constexpr int Id3Genres::emptyGenreIndex()
{
    return 255;
}

constexpr bool Id3Genres::isEmptyGenre(int index)
{
    return index == emptyGenreIndex();
}

constexpr bool Id3Genres::isIndexSupported(int index)
{
    return index >= 0 && index < genreCount();
}
 
} // namespace TagParser
 
#endif // TAG_PARSER_ID3GENRES_H