Function strlogicalcmp

src/Utility/src/String.cpp:55–96

Case-insensitive logical string comparison function

    // Case-insensitive logical string comparison function
    int32_t strlogicalcmp(std::string_view s1, std::string_view s2)
    {
        for (;;)
        {
            if (s2.empty())
            {
                return !s1.empty();
            }
            else if (s1.empty())
            {
                return -1;
            }
            else if (!(isdigit(s1[0]) && isdigit(s2[0])))
            {
                if (toupper(s1[0]) != toupper(s2[0]))
                {
                    return toupper(s1[0]) - toupper(s2[0]);
                }
                else
                {
                    s1 = s1.substr(1);
                    s2 = s2.substr(1);
                }
            }
            else
            {
                // TODO: Replace with std::from_chars when all compilers support std::from_chars
                auto [n1, s1n] = parseNextNumber(s1);
                auto [n2, s2n] = parseNextNumber(s2);
                if (n1 > n2)
                {
                    return 1;
                }
                else if (n1 < n2)
                {
                    return -1;
                }
                s1 = s1n;
                s2 = s2n;
            }
        }
    }

    std::string toUtf8(const std::wstring_view& src)
    {