void write_header(const osmium::io::Header& header) override final {
std::string out = "<?xml version='1.0' encoding='UTF-8'?>\n";
if (m_file.is_true("xml_change_format")) {
out += "<osmChange version=\"0.6\" generator=\"";
xml_string(out, header.get("generator").c_str());
out += "\">\n";
} else {
out += "<osm version=\"0.6\"";
std::string xml_josm_upload = header.get("xml_josm_upload");
if (xml_josm_upload == "true" || xml_josm_upload == "false") {
out += " upload=\"";
out += xml_josm_upload;
out += "\"";
}
out += " generator=\"";
xml_string(out, header.get("generator").c_str());
out += "\">\n";
}
for (const auto& box : header.boxes()) {
out += " <bounds";
oprintf(out, " minlon=\"%.7f\"", box.bottom_left().lon());
oprintf(out, " minlat=\"%.7f\"", box.bottom_left().lat());
oprintf(out, " maxlon=\"%.7f\"", box.top_right().lon());
oprintf(out, " maxlat=\"%.7f\"/>\n", box.top_right().lat());
}
std::promise<std::string> promise;
m_output_queue.push(promise.get_future());
promise.set_value(std::move(out));
}
