From b944c20a97c774bd76f5bc5618171144093fa722 Mon Sep 17 00:00:00 2001
From: robertl <robertl@f51c46e8-681c-474f-0cfe-069cfd0219fb>
Date: Thu, 7 Aug 2008 02:10:38 +0000
Subject: [PATCH] Markus Spoetti adds lap splitting to Garmin Training Center.

---
 gpsbabel/defs.h    |  2 ++
 gpsbabel/garmin.c  | 43 +++++++++++++++++++++++++++++++++++++++++++
 gpsbabel/gtrnctr.c |  7 ++++++-
 3 files changed, 51 insertions(+), 1 deletion(-)

diff --git a/gpsbabel/defs.h b/gpsbabel/defs.h
index 92e5e6dbe..6f8ad4536 100644
--- a/gpsbabel/defs.h
+++ b/gpsbabel/defs.h
@@ -335,6 +335,8 @@ typedef struct {
 	unsigned int altitude:1;		/+ altitude field is set +/
 	... and others
 	*/
+	unsigned int is_split:1;		/* the waypoint represents a split */
+
 	
 } wp_flags;
 
diff --git a/gpsbabel/garmin.c b/gpsbabel/garmin.c
index 1336ec18f..db800c072 100644
--- a/gpsbabel/garmin.c
+++ b/gpsbabel/garmin.c
@@ -352,6 +352,40 @@ waypt_read(void)
 	}
 }
 
+static int lap_read_nop_cb(int n, struct GPS_SWay** dp)
+{
+	return 0;
+}
+
+// returns 1 if the waypoint's start_time can be found
+// in the laps array, 0 otherwise
+unsigned int checkWayPointIsAtSplit(waypoint *wpt, GPS_PLap *laps, int nlaps)
+{
+    int result = 0;
+
+    if ((laps != NULL) && (nlaps > 0)) {
+        int i;
+        for (i=(nlaps-1); i >= 0; i--) {
+            GPS_PLap lap = laps[i];
+            time_t delta = lap->start_time - wpt->creation_time;
+            if ((delta >= -1) && (delta <= 1)) {
+                result = 1;
+                break;
+
+            // as an optimization this will stop going through
+            // the lap array when the negative delta gets too
+            // big. It assumes that laps is sorted by time in
+            // ascending order (which appears to be the case for
+            // Forerunners. Don't know about other devices.
+            } else if (delta < -1) {
+                break;
+            }
+        }
+    }
+
+   return result;
+}
+
 static
 void
 track_read(void)
@@ -364,6 +398,13 @@ track_read(void)
 	int trk_seg_num = 1;
 	char trk_seg_num_buf[10];
 	char *trk_name = "";
+	GPS_PLap* laps = NULL;
+	int nlaps = 0;
+
+	if (gps_lap_type != -1) {
+		nlaps = GPS_Command_Get_Lap(portname, &laps, &lap_read_nop_cb);
+	}
+
 
 	ntracks = GPS_Command_Get_Track(portname, &array, waypt_read_cb);
 
@@ -414,6 +455,8 @@ track_read(void)
 		wpt->cadence = array[i]->cadence;
 		wpt->shortname = xstrdup(array[i]->trk_ident);
 		wpt->creation_time = array[i]->Time;
+                wpt->wpt_flags.is_split = checkWayPointIsAtSplit(wpt, laps,
+                                                                 nlaps);
 		
 		track_add_wpt(trk_head, wpt);
 	}
diff --git a/gpsbabel/gtrnctr.c b/gpsbabel/gtrnctr.c
index 12446e91b..296f6bef2 100644
--- a/gpsbabel/gtrnctr.c
+++ b/gpsbabel/gtrnctr.c
@@ -120,7 +120,12 @@ gtc_waypt_pr(const waypoint *wpt)
 	xml_write_time(ofd, wpt->creation_time, "Time");
 	gbfprintf(ofd, "            </Trackpoint>\n");
 #else
-	gtc_write_xml(1, "<Trackpoint>\n");
+    if (wpt->wpt_flags.is_split != 0) {
+        gtc_write_xml(1, "<Trackpoint split=\"yes\">\n");
+    } else {
+        gtc_write_xml(1, "<Trackpoint>\n");
+    }
+
 	if (wpt->creation_time) {
 		char time_string[100];
 		xml_fill_in_time(time_string, wpt->creation_time, wpt->microseconds,
-- 
2.30.2