commandargs.c++

std::map<std::string, std::string> parseOptions(std::vector<std::string> const& args) {
    std::map<std::string, std::string> options;

    auto it = args.begin();
    it++; // skip the file name

    while(it != args.end()) {
        if (it->at(0) == '-') {
            std::string key = *it;

            it++;
            if (it == args.end()) {
                options[key] = "";
                break;
            }

            std::string val = "";
            if (it->at(0) != '-') {
                val = *it;
                it++;
            }

            options[key] = val;
        }
        else {
            throw std::runtime_error("Stray string in commandline");
        }
    }
    return options;
}