adds version control to orderlist exporting

src/order_base.h

@@ -1049,7 +1049,7 @@ public:
 	void DebugCheckSanity() const;
 #endif
 	bool CheckOrderListIndexing() const;
-
+	
 	inline std::vector<DispatchSchedule> &GetScheduledDispatchScheduleSet() { return this->dispatch_schedules; }
 	inline const std::vector<DispatchSchedule> &GetScheduledDispatchScheduleSet() const { return this->dispatch_schedules; }
 

src/order_cmd.cpp

@@ -43,6 +43,7 @@
 #include "date_func.h"
 #include "3rdparty/nlohmann/json.hpp"
 #include "command_aux.h"
+#include "rev.h"
 
 #include "table/strings.h"
 
@@ -925,9 +926,13 @@ void OrderList::MoveOrder(int from, int to)
 std::string OrderList::ToJSONString()
 {
 
+
 	nlohmann::json json;
-	auto& SD_data = this->GetScheduledDispatchScheduleSet();
 
+	json["version"] = ORDERLIST_JSON_OUTPUT_VERSION;
+	json["source"] = std::string(_openttd_revision);
+
+	auto& SD_data = this->GetScheduledDispatchScheduleSet();
 	auto& headJson = json["head"];
 	for (unsigned int i = 0; auto &SD : SD_data) {
 

src/order_type.h

@@ -313,6 +313,8 @@ enum CloneOptions {
 	CO_UNSHARE = 2
 };
 
+const uint8_t ORDERLIST_JSON_OUTPUT_VERSION = 1;
+
 struct Order;
 struct OrderList;