Add: support for std::string parameters in the script API

cmake/scripts/SquirrelExport.cmake

@@ -631,6 +631,8 @@ foreach(LINE IN LISTS SOURCE_LINES)
                     string(APPEND TYPES "a")
                 elseif("${PARAM}" MATCHES "^Text")
                     string(APPEND TYPES ".")
+                elseif("${PARAM}" MATCHES "^std::string")
+                    string(APPEND TYPES ".")
                 else()
                     string(APPEND TYPES "x")
                 endif()

src/script/squirrel_helper.hpp

@@ -91,6 +91,20 @@ namespace SQConvert {
 		}
 	};
 
+	template <> struct Param<const std::string &> {
+		static inline const std::string Get(HSQUIRRELVM vm, int index, SQAutoFreePointers *ptr)
+		{
+			/* Convert what-ever there is as parameter to a string */
+			sq_tostring(vm, index);
+
+			const SQChar *tmp;
+			sq_getstring(vm, -1, &tmp);
+			std::string result = StrMakeValid(tmp);
+			sq_poptop(vm);
+			return result;
+		}
+	};
+
 	template <typename Titem>
 	struct Param<Array<Titem>> {
 		static inline Array<Titem> Get(HSQUIRRELVM vm, int index, SQAutoFreePointers *ptr)