Version.hpp

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#ifndef RDS2CPP_VERSION_HPP
#define RDS2CPP_VERSION_HPP
 
#include <cstdint>
 
#include "sanisizer/sanisizer.hpp"
 
#include "utils_parse.hpp"
#include "utils_write.hpp"
 
namespace rds2cpp {
 
struct Version {
    std::int16_t major = 3;
 
    std::uint8_t minor = 5;
 
    std::uint8_t patch = 0;
};
 
template<typename Source_>
Version parse_version(Source_& src) {
    // Using int32_t for the versions as the R_Version macro operates with signed integers AFIACT.
    auto writer_version = quick_integer<std::int32_t>(src);
    Version output;
    output.major = (writer_version >> 16);
    output.minor = (writer_version >> 8) & 255;
    output.patch = writer_version & 255;
    return output;
}
 
template<class BufferedWriter_>
void write_version(const Version& version, BufferedWriter_& bufwriter) {
    // Mimic the behavior of the R_Version macro.
    inject_integer<std::int32_t, std::int32_t>(
        sanisizer::product_unsafe<std::int32_t>(version.major, 65536) +
        sanisizer::product_unsafe<std::int32_t>(version.minor, 256) +
        static_cast<std::int32_t>(version.patch),
        bufwriter
    );
}
}
 
#endif