[banshee] [Windows] Fix gettext language selection

[Gabriel Burt <gburt src gnome org>]

commit 40b5f9ae902616fc17e5e19e0522eb3f4c091768
Author: Julien Moutte <julien fluendo com>
Date:   Fri Mar 26 15:24:14 2010 -0700

    [Windows] Fix gettext language selection
    
    On Windows the display language is not detected by gettext
    automatically.  Applications like pidgin are not automatically
    switching to your language - they stay in English (bgo#614057)
    
    A fix is to set the LANG environment variable based on the
    display language to force proper gettext translations.
    
    Signed-off-by: Gabriel Burt <gabriel burt gmail com>

 .../Banshee.ServiceStack/Application.cs            |   16 ++++++++++++++++
 1 files changed, 16 insertions(+), 0 deletions(-)
---
diff --git a/src/Core/Banshee.Services/Banshee.ServiceStack/Application.cs b/src/Core/Banshee.Services/Banshee.ServiceStack/Application.cs
index 8fbc161..3d481fb 100644
--- a/src/Core/Banshee.Services/Banshee.ServiceStack/Application.cs
+++ b/src/Core/Banshee.Services/Banshee.ServiceStack/Application.cs
@@ -30,6 +30,8 @@
 using System;
 using System.Reflection;
 using System.Collections.Generic;
+using System.Globalization;
+using System.Runtime.InteropServices;
 using Mono.Unix;
 
 using Hyena;
@@ -78,10 +80,24 @@ namespace Banshee.ServiceStack
             ServiceManager.DefaultInitialize ();
         }
 
+#if WIN32
+        [DllImport("msvcrt.dll") /* willfully unmapped */]
+        public static extern int _putenv (string varName);
+#endif
+
         public static void Run ()
         {
             Banshee.Base.PlatformHacks.TrapMonoJitSegv ();
 
+#if WIN32
+            // There are two sets of environement variables we need to impact with our LANG.
+            // refer to : http://article.gmane.org/gmane.comp.gnu.mingw.user/8272
+            CultureInfo current_ci = CultureInfo.CurrentUICulture;
+            string env = String.Concat ("LANG=", current_ci.TwoLetterISOLanguageName);
+            Environment.SetEnvironmentVariable ("LANG", current_ci.TwoLetterISOLanguageName);
+            _putenv (env);
+#endif
+
             Catalog.Init (Application.InternalName, System.IO.Path.Combine (
                 Banshee.Base.Paths.InstalledApplicationDataRoot, "locale"));