waypt: Add function 'waypt_empty_gc_data' to test the state of waypoints gc_data.

diff --git a/gpsbabel/defs.h b/gpsbabel/defs.h
index cb2590aaabc4eb8e178416e7cf4bf5074a7575d7..ae5fbcb8b87c430abaffdffdd6b3341d7e133518 100644 (file)
--- a/gpsbabel/defs.h
+++ b/gpsbabel/defs.h
@@ -546,6 +546,7 @@ waypoint * find_waypt_by_name(const char *name);
 void waypt_backup(signed int *count, queue **head_bak);
 void waypt_restore(signed int count, queue *head_bak);
 geocache_data *waypt_alloc_gc_data(waypoint *wpt);
+int waypt_empty_gc_data(const waypoint *wpt);
 
 route_head *route_head_alloc(void);
 void route_add (waypoint *);

diff --git a/gpsbabel/waypt.c b/gpsbabel/waypt.c
index 065f388dd7be6dd5223788fd15029f08f27c56bc..de4fa17e37051426bbb33f88c6e54f0e722366e2 100644 (file)
--- a/gpsbabel/waypt.c
+++ b/gpsbabel/waypt.c
@@ -627,3 +627,9 @@ waypt_alloc_gc_data(waypoint *wpt)
        }
        return res;
 }
+
+int
+waypt_empty_gc_data(const waypoint *wpt)
+{
+       return (wpt->gc_data == &empty_gc_data);
+}