void build_resp_head()

in include/ylt/standalone/cinatra/coro_http_response.hpp [287:352]

• 56 lines of code
• 20 McCabe index (conditional complexity)

  void build_resp_head(std::vector<asio::const_buffer> &buffers) {
    bool has_len = false;
    bool has_host = false;
    check_header(resp_headers_, has_len, has_host);
    if (!resp_header_span_.empty()) {
      check_header(resp_header_span_, has_len, has_host);
    }

    if (!has_host) {
      buffers.emplace_back(asio::buffer(CINATRA_HOST_SV));
    }

    if (content_.empty() && !has_set_content_ &&
        fmt_type_ != format_type::chunked) {
      content_.append(default_status_content(status_));
    }

    if (fmt_type_ == format_type::chunked) {
      buffers.emplace_back(asio::buffer(TRANSFER_ENCODING_SV));
    }
    else {
      if (!cookies_.empty()) {
        for (auto &[_, cookie] : cookies_) {
          resp_headers_.emplace_back(
              resp_header{"Set-Cookie", cookie.to_string()});
        }
      }

      if (!content_.empty()) {
        if (!has_len)
          handle_content_len(buffers, content_);
      }
      else if (!content_view_.empty()) {
        if (!has_len)
          handle_content_len(buffers, content_view_);
      }
      else {
        if (!has_len && boundary_.empty())
          buffers.emplace_back(asio::buffer(ZERO_LENGTH_SV));
      }
    }

    if (need_date_) {
      buffers.emplace_back(asio::buffer(DATE_SV));
      buffers.emplace_back(asio::buffer(get_gmt_time_str()));
      buffers.emplace_back(asio::buffer(CRCF));
    }

    if (keepalive_.has_value()) {
      bool keepalive = keepalive_.value();
      keepalive ? buffers.emplace_back(asio::buffer(CONN_KEEP_SV))
                : buffers.emplace_back(asio::buffer(CONN_CLOSE_SV));
    }

    if (!content_type_.empty()) {
      buffers.emplace_back(asio::buffer(content_type_));
    }

    append_header(buffers, resp_headers_);

    if (!resp_header_span_.empty()) {
      append_header(buffers, resp_header_span_);
    }

    buffers.emplace_back(asio::buffer(CRCF));
  }