getDefaultUrl関数がUnreal環境でクラッシュする問題の解消 (Synesthesias#135)

Author: dazzhe

include/plateau/network/client.h

@@ -55,7 +55,7 @@ namespace plateau::network {
         DatasetFiles getFiles(const std::string& id) const;
         std::string download(const std::string& destination_directory_path, const std::string& url) const;
 
-        static std::string getDefaultServerUrl();
+        static const std::string& getDefaultServerUrl();
 
     private:
         std::string server_url_;

src/network/client.cpp

@@ -100,7 +100,7 @@ namespace plateau::network {
 
         // '\\' を '/' に置換
         auto pos = url_str.find(u8'\\');
-        while(pos != std::string::npos){
+        while (pos != std::string::npos) {
             url_str.replace(pos, 1, u8"/");
             pos = url_str.find(u8'\\', pos + 1);
         }
@@ -123,7 +123,8 @@ namespace plateau::network {
         return gml_file_path.u8string();
     }
 
-    std::string Client::getDefaultServerUrl() {
-        return "https://plateau-api-mock-v2.deta.dev";
+    const std::string& Client::getDefaultServerUrl() {
+        static const std::string default_server_url = "https://plateau-api-mock-v2.deta.dev";
+        return default_server_url;
     }
 }