std::string_view 的使用

module/Local_Server/Data_Source/Database.cpp

@@ -5,8 +5,9 @@
 #include <chrono>
 #include <functional>
 #include <map>
+#include <string_view>
 
-Aircraft::Aircraft(const std::string &icao) : Aircraft_Info(icao) {
+Aircraft::Aircraft(std::string_view icao) : Aircraft_Info(icao) {
   auto size = Global::instance()->mode_acs.max_track_point_size.load();
   air_pos_track_list.init(size);
   surface_pos_track_list.init(size);
@@ -32,13 +33,13 @@ void Aircraft::refresh_external_database_info() {
 }
 
 std::shared_ptr<SSR::Aircraft_Info>
-DataBase::get_aircraft(const std::string &icao) {
-  return aircraft_map.get(icao);
+DataBase::get_aircraft(std::string_view icao) {
+  return aircraft_map.get(std::string(icao));
 }
 
 std::shared_ptr<SSR::Aircraft_Info>
-DataBase::create_aircraft(const std::string &icao) {
-  auto ret = aircraft_map.create(icao);
+DataBase::create_aircraft(std::string_view icao) {
+  auto ret = aircraft_map.create(std::string(icao));
   ret->refresh_external_database_info();
   return ret;
 }
@@ -298,8 +299,8 @@ void database_server(Global *g) {
 
 static std::string output;
 
-static void log_i(const std::string &label, const std::string &value,
-                  const std::string &unit = "") {
+static void log_i(std::string_view label, std::string_view value,
+                  std::string_view unit = "") {
   std::ostringstream oss;
   // Format the label and value
   oss << std::left << std::setw(30) << label << ": " << value;
@@ -313,7 +314,7 @@ static void log_i(const std::string &label, const std::string &value,
   output += oss.str();
 }
 
-static void log_i(const std::string &label, double value,
-                  const std::string &unit = "") {
+static void log_i(std::string_view label, double value,
+                  std::string_view unit = "") {
   log_i(label, std::to_string(value), unit);
 }