xgpsspeed: Add version checks. Output warnings to stderr.

1 files changed, 19 insertions, 2 deletions

diff --git a/xgpsspeed b/xgpsspeed
index b17294d1..b0757b71 100755
--- a/xgpsspeed
+++ b/xgpsspeed
@@ -636,9 +636,11 @@ class Main(object):
     def handle_response(self, source, condition):
         if self.daemon.read() == -1:
             self.handle_hangup(source, condition)
-        if self.daemon.data['class'] == 'TPV':
+        if self.daemon.data['class'] == 'VERSION':
+            self.update_version(self.daemon.version)
+        elif self.daemon.data['class'] == 'TPV':
             self.update_speed(self.daemon.data)
-        if self.nautical and self.daemon.data['class'] == 'SKY':
+        elif self.nautical and self.daemon.data['class'] == 'SKY':
             self.update_skyview(self.daemon.data)
 
         return True
@@ -672,6 +674,21 @@ class Main(object):
             self.widget.satellites = data.satellites
             self.widget.queue_draw()
 
+    def update_version(self, ver):
+        "Update the Version"
+
+        if ver.release != gps_version:
+            sys.stderr.write("%s: WARNING gpsd version %s different than "
+                             "expected %s\n" %
+                             (sys.argv[0], ver.release, gps_version))
+
+        if ((ver.proto_major != gps.api_major_version or
+             ver.proto_minor != gps.api_minor_version)):
+            sys.stderr.write("%s: WARNING API version %s.%s different than "
+                             "expected %s.%s\n" %
+                             (sys.argv[0], ver.proto_major, ver.proto_minor,
+                              gps.api_major_version, gps.api_minor_version))
+
     def delete_event(self, _widget, _event, _data=None):
         # Someday, handle all cleanup operations here
         return False