[chronojump] Force sensor connect is more robust

[Xavier de Blas <xaviblas src gnome org>]

commit 8f55bd8924d14ffe5b07dbcccfa89b746fbcf152
Author: Xavier de Blas <xaviblas gmail com>
Date:   Fri Sep 20 18:22:14 2019 +0200

    Force sensor connect is more robust

 src/gui/forceSensor.cs | 21 ++++++++++++++++++---
 1 file changed, 18 insertions(+), 3 deletions(-)
---
diff --git a/src/gui/forceSensor.cs b/src/gui/forceSensor.cs
index d1f5a6d9..3cc92bbb 100644
--- a/src/gui/forceSensor.cs
+++ b/src/gui/forceSensor.cs
@@ -600,6 +600,9 @@ public partial class ChronoJumpWindow
        //Attention: no GTK here!!
        private string forceSensorCheckVersionDo()
        {
+               if (portFS.BytesToRead > 0)
+                       LogB.Information("check_version read possible bytes: " + portFS.ReadExisting());
+
                if(! forceSensorSendCommand("get_version:", "Checking version ...", "Catched checking 
version"))
                        return "";
 
@@ -619,8 +622,20 @@ public partial class ChronoJumpWindow
                forceSensorOtherMessageShowSeconds = false;
                forceSensorOtherMessage = str;
 
-               //return the version without "Force_Sensor-"
-               return(str.Remove(0,13));
+               /*
+                * //return the version without "Force_Sensor-"
+                * return(str.Remove(0,13));
+                * //can be problematic, once detected:
+                * //init string: ^@;Force_Sensor-0.3
+                * //Version found: [r-0.3]
+                * //so now using portFS.ReadExisting() above, and also regex and not the 0,13 positions
+                */
+
+               Match match = Regex.Match(str, @"Force_Sensor-(\d+\.\d+)");
+               if(match.Groups.Count == 1)
+                       return str = match.Value;
+               else
+                       return "0.3"; //if there is a problem default to 0.3
        }
 
        //Attention: no GTK here!!
@@ -645,7 +660,7 @@ public partial class ChronoJumpWindow
                forceSensorOtherMessageShowSeconds = false;
                forceSensorOtherMessage = str;
 
-               return (str == "binary");
+               return (str.Contains("binary"));
        }
 
        //Attention: no GTK here!!