[chronojump] Better MacOSX identification

[Xavier de Blas <xaviblas src gnome org>]

commit b8599cf5162d1abe6b607259401bd70e8f8416bb
Author: Xavier de Blas <xaviblas gmail com>
Date:   Mon Mar 16 15:13:44 2015 +0100

    Better MacOSX identification

 src/utilAll.cs |   27 ++++++++++++++++++++-------
 1 files changed, 20 insertions(+), 7 deletions(-)
---
diff --git a/src/utilAll.cs b/src/utilAll.cs
index e514c3c..cf8b3bc 100644
--- a/src/utilAll.cs
+++ b/src/utilAll.cs
@@ -58,13 +58,26 @@ public class UtilAll
 
        public static OperatingSystems GetOSEnum() 
        {
-               string os = GetOS();
-               if(os.ToUpper().StartsWith("WIN"))
-                       return OperatingSystems.WINDOWS;
-               else if(os.ToUpper().StartsWith("MAC"))
-                       return OperatingSystems.MACOSX;
-               else
-                       return OperatingSystems.LINUX;
+               
//http://stackoverflow.com/questions/10138040/how-to-detect-properly-windows-linux-mac-operating-systems
+               switch (Environment.OSVersion.Platform)
+               {
+                       case PlatformID.Unix:
+                               // Well, there are chances MacOSX is reported as Unix instead of MacOSX.
+                               // Instead of platform check, we'll do a feature checks (Mac specific root 
folders)
+                               if (Directory.Exists("/Applications")
+                                               & Directory.Exists("/System")
+                                               & Directory.Exists("/Users")
+                                               & Directory.Exists("/Volumes"))
+                                       return OperatingSystems.MACOSX;
+                               else
+                                       return OperatingSystems.LINUX;
+
+                       case PlatformID.MacOSX:
+                               return OperatingSystems.MACOSX;
+
+                       default:
+                               return OperatingSystems.WINDOWS;
+               }
        }