1 files changed, 24 insertions, 0 deletions
diff --git a/qthelper.cpp b/qthelper.cpp
index 7eb1e48f4..9d503cb6a 100644
--- a/qthelper.cpp
+++ b/qthelper.cpp
@@ -217,3 +217,27 @@ QList< int > getDivesInTrip ( dive_trip_t* trip )
 	}
 	return ret;
 }
+
+// we need this to be uniq, but also make sure
+// it doesn't change during the life time of a Subsurface session
+// oh, and it has no meaning whatsoever - that's why we have the
+// silly initial number and increment by 3 :-)
+int getUniqID(struct dive *d)
+{
+	static QSet<int> ids;
+	static int maxId = 83529;
+
+	int id = d->id;
+	if (id) {
+		if (!ids.contains(id)) {
+			qDebug() << "WTF - only I am allowed to create IDs";
+			ids.insert(id);
+		}
+		return id;
+	}
+	maxId += 3;
+	id = maxId;
+	Q_ASSERT(!ids.contains(id));
+	ids.insert(id);
+	return id;
+}