std::vector<std::string> split(const std::string& str, const std::string& delimiter, bool ignore_empty, bool strip_spaces)
{
    if (str.empty()) {
        return {};
    }

    std::vector<std::string> res;

    for (size_t p = 0, q = 0; p < str.length(); ++p) {
        if (delimiter.empty()) {
            res.push_back(std::string(1, str[p]));
            continue;
        }

        // If we are looking at the last character we want to check if the
        // remainder needs to be pushed into the result below, otherwise always
        // check for the delimiter first.
        if (p + 1 < str.length() &&
            str.compare(p, delimiter.length(), delimiter) != 0) {
            continue;
        }

        if (p == q) {
            // An empty fragment.
            if (!ignore_empty) {
                res.push_back("");
            }
            q += delimiter.length();
        } else {
            // Maybe an empty fragment
            std::string sub = str.substr(q, p - q);

            if (strip_spaces) {
                strip(sub);
            }

            if (!ignore_empty || !sub.empty()) {
                res.push_back(std::move(sub));
            }

            q = p + delimiter.length();
        }
    }

    return res;
}