From 2b0a91f80638314496f33df3882a4c7920af0899 Mon Sep 17 00:00:00 2001
From: oliskoli <oliskoli>
Date: Thu, 28 Jun 2007 22:27:43 +0000
Subject: [PATCH] Try to detect the truth of unknown_alt.

---
 csv_util.c | 4 ++++
 delgpl.c   | 2 ++
 mapsend.c  | 2 ++
 3 files changed, 8 insertions(+)

diff --git a/csv_util.c b/csv_util.c
index ab559378e..47b906f6a 100644
--- a/csv_util.c
+++ b/csv_util.c
@@ -895,10 +895,14 @@ xcsv_parse_val(const char *s, waypoint *wpt, const field_map_t *fmp)
     if (strcmp(fmp->key, "ALT_FEET") == 0) {
        /* altitude in feet as a decimal value */
        wpt->altitude = FEET_TO_METERS(atof(s));
+       if (wpt->altitude < unknown_alt + 1)
+          wpt->altitude = unknown_alt;
     } else
     if (strcmp(fmp->key, "ALT_METERS") == 0) {
        /* altitude in meters as a decimal value */
        wpt->altitude = atof(s);
+       if (wpt->altitude < unknown_alt + 1)
+          wpt->altitude = unknown_alt;
     } else
     
     /* PATH CONVERSIONS ************************************************/
diff --git a/delgpl.c b/delgpl.c
index dc4e3d65a..6f6e1fc2b 100644
--- a/delgpl.c
+++ b/delgpl.c
@@ -68,6 +68,8 @@ gpl_read(void)
 		wpt_tmp->longitude = le_read_double(&gp.lon);
 		alt_feet = le_read_double(&gp.alt);
 		wpt_tmp->altitude = FEET_TO_METERS(alt_feet);
+		if (wpt_tmp->altitude <= unknown_alt + 1)
+			wpt_tmp->altitude = unknown_alt;
 		wpt_tmp->creation_time = le_read32(&gp.tm);
 		
 	        WAYPT_SET(wpt_tmp, course, le_read_double(&gp.heading));
diff --git a/mapsend.c b/mapsend.c
index c04c9ab50..b7910bf56 100644
--- a/mapsend.c
+++ b/mapsend.c
@@ -205,6 +205,8 @@ mapsend_track_read(void)
 		} else {
 			wpt_tmp->altitude = gbfgetflt(mapsend_file_in);
 		}
+		if (wpt_tmp->altitude < unknown_alt + 1)
+			wpt_tmp->altitude = unknown_alt;
 		wpt_tmp->creation_time = gbfgetint32(mapsend_file_in);
 		valid = gbfgetint32(mapsend_file_in);
 
-- 
2.30.2