std::vector<std::string> StringSplit(const std::string & str, const std::string & pattern) {
    std::vector<std::string> retval;
    std::string work = str;

    int pos;
    while((pos = work.find(pattern)) != std::string::npos) {
        std::string item = work.substr(0, pos);
        retval.push_back(item);

        work = work.substr(pos + pattern.length());        
    }

    if(work != "")
        retval.push_back(work);

    return retval;
}