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/Session.php b/system/libraries/Session.php
index afa4334..d4fdd3a 100644
--- a/system/libraries/Session.php
+++ b/system/libraries/Session.php
@@ -146,7 +146,7 @@
 		 * a new one.  If it does, we'll update it.

 		 *

 		 */

-		if ( ! $this->sess_read())

+		if (! $this->sess_read())

 		{

 			$this->sess_create();

 		}

@@ -214,7 +214,7 @@
 		

 		$session = @unserialize($this->strip_slashes($session));

 		

-		if ( ! is_array($session) OR ! isset($session['last_activity']))

+		if (! is_array($session) OR ! isset($session['last_activity']))

 		{

 			log_message('error', 'The session cookie data did not contain a valid array. This could be a possible hacking attempt.');

 			return FALSE;

@@ -439,7 +439,7 @@
 	 */		

 	function userdata($item)

 	{

-		return ( ! isset($this->userdata[$item])) ? FALSE : $this->userdata[$item];

+		return (! isset($this->userdata[$item])) ? FALSE : $this->userdata[$item];

 	}

 

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

@@ -452,7 +452,7 @@
 	 */	

 	function all_userdata()

 	{

-        return ( ! isset($this->userdata)) ? FALSE : $this->userdata;

+        return (! isset($this->userdata)) ? FALSE : $this->userdata;

 	}

 	

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