Method getString

src/Functions/IP2GeoUDF.cpp:290–319

}

String IP2GeoManager::IPIPLocator::getString(String ip, int location_type, ipdb_reader * reader)
{
    char body[512];
    if (reader == nullptr)
        throw Exception("IPDB file is not open or memory has been freed ", ErrorCodes::FILE_NOT_FOUND);
    int err = ipdb_reader_find(reader, ip.c_str(), "CN", body);
    if (!err)
    {
        char tmp[64];
        int f = 0, p1 = 0, p2 = -1;
        do
        {
            if (*(body + p1) == '\t' || !*(body + p1))
            {
                if (f == location_type)
                {
                    strncpy(tmp, body + p2 + 1, static_cast<size_t>(p1 - p2));
                    tmp[p1 - p2] = 0;
                    return tmp;
                }
                else
                {
                    p2 = p1;
                    ++f;
                }
            }
        } while (*(body + p1++));
    }
    return "NULL";
}

void IP2GeoManager::IPIPLocator::freeIpipReader()
{