Added get_dir_file_info(), get_file_info(), and get_mime_by_extension() to the File Helper.

Changed ( ! condition) into (! condition) within the code
diff --git a/system/libraries/User_agent.php b/system/libraries/User_agent.php
index ff6d4a9..dd60a56 100644
--- a/system/libraries/User_agent.php
+++ b/system/libraries/User_agent.php
@@ -63,7 +63,7 @@
 			$this->agent = trim($_SERVER['HTTP_USER_AGENT']);

 		}

 		

-		if ( ! is_null($this->agent))

+		if (! is_null($this->agent))

 		{

 			if ($this->_load_agent_file())

 			{

@@ -84,7 +84,7 @@
 	 */		

 	function _load_agent_file()

 	{

-		if ( ! @include(APPPATH.'config/user_agents'.EXT))

+		if (! @include(APPPATH.'config/user_agents'.EXT))

 		{

 			return FALSE;

 		}

@@ -339,7 +339,7 @@
 	 */			

 	function is_referral()

 	{

-		return ( ! isset($_SERVER['HTTP_REFERER']) OR $_SERVER['HTTP_REFERER'] == '') ? FALSE : TRUE;

+		return (! isset($_SERVER['HTTP_REFERER']) OR $_SERVER['HTTP_REFERER'] == '') ? FALSE : TRUE;

 	}

 

 	// --------------------------------------------------------------------

@@ -429,7 +429,7 @@
 	 */			

 	function referrer()

 	{

-		return ( ! isset($_SERVER['HTTP_REFERER']) OR $_SERVER['HTTP_REFERER'] == '') ? '' : trim($_SERVER['HTTP_REFERER']);

+		return (! isset($_SERVER['HTTP_REFERER']) OR $_SERVER['HTTP_REFERER'] == '') ? '' : trim($_SERVER['HTTP_REFERER']);

 	}

 

 	// --------------------------------------------------------------------