Method isValidHex

KittyMemoryEx/KittyUtils.cpp:217–256

    }

    bool String::isValidHex(const std::string &hex)
    {
        if (hex.empty())
            return false;

        const char *data = hex.c_str();
        size_t len = hex.length();
        size_t i = 0;

        while (i < len && ::isspace(static_cast<unsigned char>(data[i])))
        {
            i++;
        }

        if (i + 2 <= len && data[i] == '0' && (data[i + 1] == 'x' || data[i + 1] == 'X'))
        {
            i += 2;
        }

        size_t digitCount = 0;

        for (; i < len; ++i)
        {
            unsigned char c = static_cast<unsigned char>(data[i]);

            if (::isspace(c))
            {
                continue;
            }

            if (!::isxdigit(c))
            {
                return false;
            }

            digitCount++;
        }

        return (digitCount > 0 && (digitCount % 2 == 0));
    }

    bool String::validateHex(std::string &hex)
    {