Guid.cpp

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#include <sstream>
 
#include "galaxy/math/Random.hpp"
 
#include "Guid.hpp"
 
static constexpr const char* const s_chars {"abcdef"};
 
namespace galaxy
{
    namespace utils
    {
        Guid::Guid()
            : m_id {""}
        {
            math::Random rng;
 
            m_id += s_chars[static_cast<int>(std::floor(rng.gen<float>(0.0f, 1.0f) * 6))];
 
            for (auto i = 1; i < 32; i++)
            {
                const auto random = static_cast<int>(rng.gen<float>(0.0f, 1.0f) * 16);
 
                if (i == 8 || i == 12 || i == 16 || i == 20)
                {
                    m_id += '-';
                }
 
                std::stringstream hex;
                hex << std::hex << (i == 12 ? 4 : (i == 16 ? (random & 3 | 8) : random));
 
                m_id += hex.str();
            }
        }
 
        Guid::Guid(Guid&& g) noexcept
        {
            this->m_id = std::move(g.m_id);
        }
 
        Guid& Guid::operator=(Guid&& g) noexcept
        {
            if (this != &g)
            {
                this->m_id = std::move(g.m_id);
            }
 
            return *this;
        }
 
        Guid::Guid(const Guid& g) noexcept
        {
            this->m_id = g.m_id;
        }
 
        Guid& Guid::operator=(const Guid& g) noexcept
        {
            if (this != &g)
            {
                this->m_id = g.m_id;
            }
 
            return *this;
        }
 
        Guid::~Guid() noexcept
        {
        }
 
        const std::string& Guid::to_string() const noexcept
        {
            return m_id;
        }
 
        bool Guid::operator==(const Guid& rhs) noexcept
        {
            return m_id == rhs.m_id;
        }
 
        bool Guid::operator!=(const Guid& rhs) noexcept
        {
            return !operator==(rhs);
        }
    } // namespace utils
} // namespace galaxy