From 110ba159d2f26c98194740b7b33f350b08964fce Mon Sep 17 00:00:00 2001
From: Sven Slootweg <jamsoftgamedev@gmail.com>
Date: Tue, 10 Jul 2012 08:30:34 +0200
Subject: [PATCH] Implement isempty operation

---
 class.templater.php | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/class.templater.php b/class.templater.php
index 6d4801c..2bf9010 100644
--- a/class.templater.php
+++ b/class.templater.php
@@ -742,6 +742,30 @@ class TemplateIfElement extends TemplateSyntaxElement
 				return "";
 			}
 		}
+		elseif($this->operation == "isempty")
+		{
+			$a = $this->FetchVariable($this->left, $data);
+			
+			$empty = empty($a);
+			
+			if($this->right == "false")
+			{
+				$desired = false;
+			}
+			else
+			{
+				$desired = true;
+			}
+			
+			if($empty == $desired)
+			{
+				return parent::Evaluate($data);
+			}
+			else
+			{
+				return "";
+			}
+		}
 	}
 }