From cc6da3c7db716c000118d93378669f635009f4eb Mon Sep 17 00:00:00 2001
From: Nicholas Mayne <Jetski5822@gmail.com>
Date: Sun, 12 Oct 2014 16:00:56 +0100
Subject: [PATCH] #19694: Adding a language check in culture-lang('en') for
 example

Work Item: 19694
---
 .../RuleEngine/CultureRuleProvider.cs               | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/src/Orchard.Web/Modules/Orchard.Localization/RuleEngine/CultureRuleProvider.cs b/src/Orchard.Web/Modules/Orchard.Localization/RuleEngine/CultureRuleProvider.cs
index fa6f0a17f..11105654e 100644
--- a/src/Orchard.Web/Modules/Orchard.Localization/RuleEngine/CultureRuleProvider.cs
+++ b/src/Orchard.Web/Modules/Orchard.Localization/RuleEngine/CultureRuleProvider.cs
@@ -27,6 +27,10 @@ namespace Orchard.Localization.RuleEngine {
             if (String.Equals(ruleContext.FunctionName, "culture-isrtl", StringComparison.OrdinalIgnoreCase)) {
                 ProcessCurrentCultureIsRtl(ruleContext);
             }
+
+            if (String.Equals(ruleContext.FunctionName, "culture-lang", StringComparison.OrdinalIgnoreCase)) {
+                ProcessLanguageCode(ruleContext);
+            }
         }
 
         private void ProcessCurrentCultureIsRtl(dynamic ruleContext) {
@@ -48,6 +52,15 @@ namespace Orchard.Localization.RuleEngine {
                 .Any(c => c.Name == currentUserCulture.Name);
         }
 
+        private void ProcessLanguageCode(dynamic ruleContext) {
+            var currentUserCulture = CultureInfo.GetCultureInfo(_workContext.CurrentCulture);
+
+            ruleContext.Result = ((object[])ruleContext.Arguments)
+                .Cast<string>()
+                .Select(CultureInfo.GetCultureInfo)
+                .Any(c => c.Name == currentUserCulture.TwoLetterISOLanguageName);
+        }
+
         private void ProcessCultureId(dynamic ruleContext) {
             var currentUserCulture = CultureInfo.GetCultureInfo(_workContext.CurrentCulture);