Merge branch 'develop' of github.com:EllisLab/CodeIgniter into develop

6 files changed, 473 insertions, 118 deletions

diff --git a/system/libraries/Cart.php b/system/libraries/Cart.php
index b2eaa9ad7..ab5a70c98 100644
--- a/system/libraries/Cart.php
+++ b/system/libraries/Cart.php
@@ -99,7 +99,7 @@ class CI_Cart {
 		$save_cart = FALSE;
 		if (isset($items['id']))
 		{
-			if ($this->_insert($items) == TRUE)
+			if (($rowid = $this->_insert($items)))
 			{
 				$save_cart = TRUE;
 			}
@@ -110,7 +110,7 @@ class CI_Cart {
 			{
 				if (is_array($val) AND isset($val['id']))
 				{
-					if ($this->_insert($val) == TRUE)
+					if ($this->_insert($val))
 					{
 						$save_cart = TRUE;
 					}
@@ -122,7 +122,7 @@ class CI_Cart {
 		if ($save_cart == TRUE)
 		{
 			$this->_save_cart();
-			return TRUE;
+			return isset($rowid) ? $rowid : TRUE;
 		}
 
 		return FALSE;
@@ -244,7 +244,7 @@ class CI_Cart {
 		}
 
 		// Woot!
-		return TRUE;
+		return $rowid;
 	}
 
 	// --------------------------------------------------------------------
diff --git a/system/libraries/Driver.php b/system/libraries/Driver.php
index c32f2c1eb..9881c1eec 100644
--- a/system/libraries/Driver.php
+++ b/system/libraries/Driver.php
@@ -54,7 +54,7 @@ class CI_Driver_Library {
 			if ( ! class_exists($child_class))
 			{
 				// check application path first
-				foreach (array(APPPATH, BASEPATH) as $path)
+				foreach (get_instance()->load->get_package_paths(TRUE) as $path)
 				{
 					// loves me some nesting!
 					foreach (array(ucfirst($driver_name), $driver_name) as $class)
@@ -226,4 +226,4 @@ class CI_Driver {
 // END CI_Driver CLASS
 
 /* End of file Driver.php */
-/* Location: ./system/libraries/Driver.php */
+/* Location: ./system/libraries/Driver.php */
\ No newline at end of file
diff --git a/system/libraries/Email.php b/system/libraries/Email.php
index 03eccea09..e28c23a04 100644
--- a/system/libraries/Email.php
+++ b/system/libraries/Email.php
@@ -405,12 +405,12 @@ class CI_Email {
 	/**
 	 * Add a Header Item
 	 *
-	 * @access	private
+	 * @access	protected
 	 * @param	string
 	 * @param	string
 	 * @return	void
 	 */
-	private function _set_header($header, $value)
+	protected function _set_header($header, $value)
 	{
 		$this->_headers[$header] = $value;
 	}
@@ -420,11 +420,11 @@ class CI_Email {
 	/**
 	 * Convert a String to an Array
 	 *
-	 * @access	private
+	 * @access	protected
 	 * @param	string
 	 * @return	array
 	 */
-	private function _str_to_array($email)
+	protected function _str_to_array($email)
 	{
 		if ( ! is_array($email))
 		{
@@ -452,7 +452,7 @@ class CI_Email {
 	 */
 	public function set_alt_message($str = '')
 	{
-		$this->alt_message = ($str == '') ? '' : $str;
+		$this->alt_message = $str;
 		return $this;
 	}
 
@@ -577,10 +577,10 @@ class CI_Email {
 	/**
 	 * Set Message Boundary
 	 *
-	 * @access	private
+	 * @access	protected
 	 * @return	void
 	 */
-	private function _set_boundaries()
+	protected function _set_boundaries()
 	{
 		$this->_alt_boundary = "B_ALT_".uniqid(''); // multipart/alternative
 		$this->_atc_boundary = "B_ATC_".uniqid(''); // attachment boundary
@@ -591,10 +591,10 @@ class CI_Email {
 	/**
 	 * Get the Message ID
 	 *
-	 * @access	private
+	 * @access	protected
 	 * @return	string
 	 */
-	private function _get_message_id()
+	protected function _get_message_id()
 	{
 		$from = $this->_headers['Return-Path'];
 		$from = str_replace(">", "", $from);
@@ -608,11 +608,11 @@ class CI_Email {
 	/**
 	 * Get Mail Protocol
 	 *
-	 * @access	private
+	 * @access	protected
 	 * @param	bool
 	 * @return	string
 	 */
-	private function _get_protocol($return = TRUE)
+	protected function _get_protocol($return = TRUE)
 	{
 		$this->protocol = strtolower($this->protocol);
 		$this->protocol = ( ! in_array($this->protocol, $this->_protocols, TRUE)) ? 'mail' : $this->protocol;
@@ -628,11 +628,11 @@ class CI_Email {
 	/**
 	 * Get Mail Encoding
 	 *
-	 * @access	private
+	 * @access	protected
 	 * @param	bool
 	 * @return	string
 	 */
-	private function _get_encoding($return = TRUE)
+	protected function _get_encoding($return = TRUE)
 	{
 		$this->_encoding = ( ! in_array($this->_encoding, $this->_bit_depths)) ? '8bit' : $this->_encoding;
 
@@ -655,10 +655,10 @@ class CI_Email {
 	/**
 	 * Get content type (text/html/attachment)
 	 *
-	 * @access	private
+	 * @access	protected
 	 * @return	string
 	 */
-	private function _get_content_type()
+	protected function _get_content_type()
 	{
 		if	($this->mailtype == 'html' &&  count($this->_attach_name) == 0)
 		{
@@ -683,10 +683,10 @@ class CI_Email {
 	/**
 	 * Set RFC 822 Date
 	 *
-	 * @access	private
+	 * @access	protected
 	 * @return	string
 	 */
-	private function _set_date()
+	protected function _set_date()
 	{
 		$timezone = date("Z");
 		$operator = (strncmp($timezone, '-', 1) == 0) ? '-' : '+';
@@ -701,10 +701,10 @@ class CI_Email {
 	/**
 	 * Mime message
 	 *
-	 * @access	private
+	 * @access	protected
 	 * @return	string
 	 */
-	private function _get_mime_message()
+	protected function _get_mime_message()
 	{
 		return "This is a multi-part message in MIME format.".$this->newline."Your email application may not support this format.";
 	}
@@ -802,10 +802,10 @@ class CI_Email {
 	 * If the user hasn't specified his own alternative message
 	 * it creates one by stripping the HTML
 	 *
-	 * @access	private
+	 * @access	protected
 	 * @return	string
 	 */
-	private function _get_alt_message()
+	protected function _get_alt_message()
 	{
 		if ($this->alt_message != "")
 		{
@@ -941,11 +941,11 @@ class CI_Email {
 	/**
 	 * Build final headers
 	 *
-	 * @access	private
+	 * @access	protected
 	 * @param	string
 	 * @return	string
 	 */
-	private function _build_headers()
+	protected function _build_headers()
 	{
 		$this->_set_header('X-Sender', $this->clean_email($this->_headers['From']));
 		$this->_set_header('X-Mailer', $this->useragent);
@@ -959,10 +959,10 @@ class CI_Email {
 	/**
 	 * Write Headers as a string
 	 *
-	 * @access	private
+	 * @access	protected
 	 * @return	void
 	 */
-	private function _write_headers()
+	protected function _write_headers()
 	{
 		if ($this->protocol == 'mail')
 		{
@@ -994,10 +994,10 @@ class CI_Email {
 	/**
 	 * Build Final Body and attachments
 	 *
-	 * @access	private
+	 * @access	protected
 	 * @return	void
 	 */
-	private function _build_message()
+	protected function _build_message()
 	{
 		if ($this->wordwrap === TRUE  AND  $this->mailtype != 'html')
 		{
@@ -1177,12 +1177,12 @@ class CI_Email {
 	 * Prepares string for Quoted-Printable Content-Transfer-Encoding
 	 * Refer to RFC 2045 http://www.ietf.org/rfc/rfc2045.txt
 	 *
-	 * @access	private
+	 * @access	protected
 	 * @param	string
 	 * @param	integer
 	 * @return	string
 	 */
-	private function _prep_quoted_printable($str, $charlim = '')
+	protected function _prep_quoted_printable($str, $charlim = '')
 	{
 		// Set the character limit
 		// Don't allow over 76, as that will make servers and MUAs barf
@@ -1275,7 +1275,7 @@ class CI_Email {
 	 * @param	bool	// set to TRUE for processing From: headers
 	 * @return	str
 	 */
-	private function _prep_q_encoding($str, $from = FALSE)
+	protected function _prep_q_encoding($str, $from = FALSE)
 	{
 		$str = str_replace(array("\r", "\n"), array('', ''), $str);
 
@@ -1440,10 +1440,10 @@ class CI_Email {
 	/**
 	 * Unwrap special elements
 	 *
-	 * @access	private
+	 * @access	protected
 	 * @return	void
 	 */
-	private function _unwrap_specials()
+	protected function _unwrap_specials()
 	{
 		$this->_finalbody = preg_replace_callback("/\{unwrap\}(.*?)\{\/unwrap\}/si", array($this, '_remove_nl_callback'), $this->_finalbody);
 	}
@@ -1453,10 +1453,10 @@ class CI_Email {
 	/**
 	 * Strip line-breaks via callback
 	 *
-	 * @access	private
+	 * @access	protected
 	 * @return	string
 	 */
-	private function _remove_nl_callback($matches)
+	protected function _remove_nl_callback($matches)
 	{
 		if (strpos($matches[1], "\r") !== FALSE OR strpos($matches[1], "\n") !== FALSE)
 		{
@@ -1471,10 +1471,10 @@ class CI_Email {
 	/**
 	 * Spool mail to the mail server
 	 *
-	 * @access	private
+	 * @access	protected
 	 * @return	bool
 	 */
-	private function _spool_email()
+	protected function _spool_email()
 	{
 		$this->_unwrap_specials();
 
@@ -1516,10 +1516,10 @@ class CI_Email {
 	/**
 	 * Send using mail()
 	 *
-	 * @access	private
+	 * @access	protected
 	 * @return	bool
 	 */
-	private function _send_with_mail()
+	protected function _send_with_mail()
 	{
 		if ($this->_safe_mode == TRUE)
 		{
@@ -1553,10 +1553,10 @@ class CI_Email {
 	/**
 	 * Send using Sendmail
 	 *
-	 * @access	private
+	 * @access	protected
 	 * @return	bool
 	 */
-	private function _send_with_sendmail()
+	protected function _send_with_sendmail()
 	{
 		$fp = @popen($this->mailpath . " -oi -f ".$this->clean_email($this->_headers['From'])." -t", 'w');
 
@@ -1591,10 +1591,10 @@ class CI_Email {
 	/**
 	 * Send using SMTP
 	 *
-	 * @access	private
+	 * @access	protected
 	 * @return	bool
 	 */
-	private function _send_with_smtp()
+	protected function _send_with_smtp()
 	{
 		if ($this->smtp_host == '')
 		{
@@ -1660,11 +1660,11 @@ class CI_Email {
 	/**
 	 * SMTP Connect
 	 *
-	 * @access	private
+	 * @access	protected
 	 * @param	string
 	 * @return	string
 	 */
-	private function _smtp_connect()
+	protected function _smtp_connect()
 	{
 		$this->_smtp_connect = fsockopen($this->smtp_host,
 										$this->smtp_port,
@@ -1687,12 +1687,12 @@ class CI_Email {
 	/**
 	 * Send SMTP command
 	 *
-	 * @access	private
+	 * @access	protected
 	 * @param	string
 	 * @param	string
 	 * @return	string
 	 */
-	private function _send_command($cmd, $data = '')
+	protected function _send_command($cmd, $data = '')
 	{
 		switch ($cmd)
 		{
@@ -1754,10 +1754,10 @@ class CI_Email {
 	/**
 	 *  SMTP Authenticate
 	 *
-	 * @access	private
+	 * @access	protected
 	 * @return	bool
 	 */
-	private function _smtp_authenticate()
+	protected function _smtp_authenticate()
 	{
 		if ( ! $this->_smtp_auth)
 		{
@@ -1808,10 +1808,10 @@ class CI_Email {
 	/**
 	 * Send SMTP data
 	 *
-	 * @access	private
+	 * @access	protected
 	 * @return	bool
 	 */
-	private function _send_data($data)
+	protected function _send_data($data)
 	{
 		if ( ! fwrite($this->_smtp_connect, $data . $this->newline))
 		{
@@ -1829,10 +1829,10 @@ class CI_Email {
 	/**
 	 * Get SMTP data
 	 *
-	 * @access	private
+	 * @access	protected
 	 * @return	string
 	 */
-	private function _get_smtp_data()
+	protected function _get_smtp_data()
 	{
 		$data = "";
 
@@ -1854,10 +1854,10 @@ class CI_Email {
 	/**
 	 * Get Hostname
 	 *
-	 * @access	private
+	 * @access	protected
 	 * @return	string
 	 */
-	private function _get_hostname()
+	protected function _get_hostname()
 	{
 		return (isset($_SERVER['SERVER_NAME'])) ? $_SERVER['SERVER_NAME'] : 'localhost.localdomain';
 	}
@@ -1867,10 +1867,10 @@ class CI_Email {
 	/**
 	 * Get IP
 	 *
-	 * @access	private
+	 * @access	protected
 	 * @return	string
 	 */
-	private function _get_ip()
+	protected function _get_ip()
 	{
 		if ($this->_IP !== FALSE)
 		{
@@ -1933,11 +1933,11 @@ class CI_Email {
 	/**
 	 * Set Message
 	 *
-	 * @access	private
+	 * @access	protected
 	 * @param	string
 	 * @return	string
 	 */
-	private function _set_error_message($msg, $val = '')
+	protected function _set_error_message($msg, $val = '')
 	{
 		$CI =& get_instance();
 		$CI->lang->load('email');
@@ -1957,11 +1957,11 @@ class CI_Email {
 	/**
 	 * Mime Types
 	 *
-	 * @access	private
+	 * @access	protected
 	 * @param	string
 	 * @return	string
 	 */
-	private function _mime_types($ext = "")
+	protected function _mime_types($ext = "")
 	{
 		$mimes = array(	'hqx'	=>	'application/mac-binhex40',
 						'cpt'	=>	'application/mac-compactpro',
diff --git a/system/libraries/Form_validation.php b/system/libraries/Form_validation.php
index 6f79a554a..a34809e05 100644
--- a/system/libraries/Form_validation.php
+++ b/system/libraries/Form_validation.php
@@ -26,16 +26,15 @@
  */
 class CI_Form_validation {
 
-	var $CI;
-	var $_field_data			= array();
-	var $_config_rules			= array();
-	var $_error_array			= array();
-	var $_error_messages		= array();
-	var $_error_prefix			= '<p>';
-	var $_error_suffix			= '</p>';
-	var $error_string			= '';
-	var $_safe_form_data		= FALSE;
-
+	protected $CI;
+	protected $_field_data			= array();
+	protected $_config_rules		= array();
+	protected $_error_array			= array();
+	protected $_error_messages		= array();
+	protected $_error_prefix		= '<p>';
+	protected $_error_suffix		= '</p>';
+	protected $error_string			= '';
+	protected $_safe_form_data		= FALSE;
 
 	/**
 	 * Constructor
@@ -72,7 +71,7 @@ class CI_Form_validation {
 	 * @param	string
 	 * @return	void
 	 */
-	function set_rules($field, $label = '', $rules = '')
+	public function set_rules($field, $label = '', $rules = '')
 	{
 		// No reason to set rules if we have no POST data
 		if (count($_POST) == 0)
@@ -163,7 +162,7 @@ class CI_Form_validation {
 	 * @param	string
 	 * @return	string
 	 */
-	function set_message($lang, $val = '')
+	public function set_message($lang, $val = '')
 	{
 		if ( ! is_array($lang))
 		{
@@ -187,7 +186,7 @@ class CI_Form_validation {
 	 * @param	string
 	 * @return	void
 	 */
-	function set_error_delimiters($prefix = '<p>', $suffix = '</p>')
+	public function set_error_delimiters($prefix = '<p>', $suffix = '</p>')
 	{
 		$this->_error_prefix = $prefix;
 		$this->_error_suffix = $suffix;
@@ -206,7 +205,7 @@ class CI_Form_validation {
 	 * @param	string	the field name
 	 * @return	void
 	 */
-	function error($field = '', $prefix = '', $suffix = '')
+	public function error($field = '', $prefix = '', $suffix = '')
 	{
 		if ( ! isset($this->_field_data[$field]['error']) OR $this->_field_data[$field]['error'] == '')
 		{
@@ -238,7 +237,7 @@ class CI_Form_validation {
 	 * @param	string
 	 * @return	str
 	 */
-	function error_string($prefix = '', $suffix = '')
+	public function error_string($prefix = '', $suffix = '')
 	{
 		// No errrors, validation passes!
 		if (count($this->_error_array) === 0)
@@ -279,7 +278,7 @@ class CI_Form_validation {
 	 * @access	public
 	 * @return	bool
 	 */
-	function run($group = '')
+	public function run($group = '')
 	{
 		// Do we even have any data to process?  Mm?
 		if (count($_POST) == 0)
@@ -374,7 +373,7 @@ class CI_Form_validation {
 	 * @param	integer
 	 * @return	mixed
 	 */
-	function _reduce_array($array, $keys, $i = 0)
+	protected function _reduce_array($array, $keys, $i = 0)
 	{
 		if (is_array($array))
 		{
@@ -406,7 +405,7 @@ class CI_Form_validation {
 	 * @access	private
 	 * @return	null
 	 */
-	function _reset_post_array()
+	protected function _reset_post_array()
 	{
 		foreach ($this->_field_data as $field => $row)
 		{
@@ -468,7 +467,7 @@ class CI_Form_validation {
 	 * @param	integer
 	 * @return	mixed
 	 */
-	function _execute($row, $rules, $postdata = NULL, $cycles = 0)
+	protected function _execute($row, $rules, $postdata = NULL, $cycles = 0)
 	{
 		// If the $_POST data is an array we will run a recursive call
 		if (is_array($postdata))
@@ -489,7 +488,7 @@ class CI_Form_validation {
 		if ( ! in_array('required', $rules) AND is_null($postdata))
 		{
 			// Before we bail out, does the rule contain a callback?
-			if (preg_match("/(callback_\w+)/", implode(' ', $rules), $match))
+			if (preg_match("/(callback_\w+(\[.*?\])?)/", implode(' ', $rules), $match))
 			{
 				$callback = TRUE;
 				$rules = (array('1' => $match[1]));
@@ -695,7 +694,7 @@ class CI_Form_validation {
 	 * @param	string	the field name
 	 * @return	string
 	 */
-	function _translate_fieldname($fieldname)
+	protected function _translate_fieldname($fieldname)
 	{
 		// Do we need to translate the field name?
 		// We look for the prefix lang: to determine this
@@ -727,7 +726,7 @@ class CI_Form_validation {
 	 * @param	string
 	 * @return	void
 	 */
-	function set_value($field = '', $default = '')
+	public function set_value($field = '', $default = '')
 	{
 		if ( ! isset($this->_field_data[$field]))
 		{
@@ -757,7 +756,7 @@ class CI_Form_validation {
 	 * @param	string
 	 * @return	string
 	 */
-	function set_select($field = '', $value = '', $default = FALSE)
+	public function set_select($field = '', $value = '', $default = FALSE)
 	{
 		if ( ! isset($this->_field_data[$field]) OR ! isset($this->_field_data[$field]['postdata']))
 		{
@@ -801,7 +800,7 @@ class CI_Form_validation {
 	 * @param	string
 	 * @return	string
 	 */
-	function set_radio($field = '', $value = '', $default = FALSE)
+	public function set_radio($field = '', $value = '', $default = FALSE)
 	{
 		if ( ! isset($this->_field_data[$field]) OR ! isset($this->_field_data[$field]['postdata']))
 		{
@@ -845,7 +844,7 @@ class CI_Form_validation {
 	 * @param	string
 	 * @return	string
 	 */
-	function set_checkbox($field = '', $value = '', $default = FALSE)
+	public function set_checkbox($field = '', $value = '', $default = FALSE)
 	{
 		if ( ! isset($this->_field_data[$field]) OR ! isset($this->_field_data[$field]['postdata']))
 		{
@@ -885,7 +884,7 @@ class CI_Form_validation {
 	 * @param	string
 	 * @return	bool
 	 */
-	function required($str)
+	public function required($str)
 	{
 		if ( ! is_array($str))
 		{
@@ -907,7 +906,7 @@ class CI_Form_validation {
 	 * @param	regex
 	 * @return	bool
 	 */
-	function regex_match($str, $regex)
+	public function regex_match($str, $regex)
 	{
 		if ( ! preg_match($regex, $str))
 		{
@@ -927,7 +926,7 @@ class CI_Form_validation {
 	 * @param	field
 	 * @return	bool
 	 */
-	function matches($str, $field)
+	public function matches($str, $field)
 	{
 		if ( ! isset($_POST[$field]))
 		{
@@ -938,6 +937,24 @@ class CI_Form_validation {
 
 		return ($str !== $field) ? FALSE : TRUE;
 	}
+	
+	// --------------------------------------------------------------------
+
+	/**
+	 * Match one field to another
+	 *
+	 * @access	public
+	 * @param	string
+	 * @param	field
+	 * @return	bool
+	 */
+	public function is_unique($str, $field)
+	{
+		list($table, $field)=explode('.', $field);
+		$query = $this->CI->db->limit(1)->get_where($table, array($field => $str));
+		
+		return $query->num_rows() === 0;
+    }
 
 	// --------------------------------------------------------------------
 
@@ -949,7 +966,7 @@ class CI_Form_validation {
 	 * @param	value
 	 * @return	bool
 	 */
-	function min_length($str, $val)
+	public function min_length($str, $val)
 	{
 		if (preg_match("/[^0-9]/", $val))
 		{
@@ -974,7 +991,7 @@ class CI_Form_validation {
 	 * @param	value
 	 * @return	bool
 	 */
-	function max_length($str, $val)
+	public function max_length($str, $val)
 	{
 		if (preg_match("/[^0-9]/", $val))
 		{
@@ -999,7 +1016,7 @@ class CI_Form_validation {
 	 * @param	value
 	 * @return	bool
 	 */
-	function exact_length($str, $val)
+	public function exact_length($str, $val)
 	{
 		if (preg_match("/[^0-9]/", $val))
 		{
@@ -1023,7 +1040,7 @@ class CI_Form_validation {
 	 * @param	string
 	 * @return	bool
 	 */
-	function valid_email($str)
+	public function valid_email($str)
 	{
 		return ( ! preg_match("/^([a-z0-9\+_\-]+)(\.[a-z0-9\+_\-]+)*@([a-z0-9\-]+\.)+[a-z]{2,6}$/ix", $str)) ? FALSE : TRUE;
 	}
@@ -1037,7 +1054,7 @@ class CI_Form_validation {
 	 * @param	string
 	 * @return	bool
 	 */
-	function valid_emails($str)
+	public function valid_emails($str)
 	{
 		if (strpos($str, ',') === FALSE)
 		{
@@ -1064,7 +1081,7 @@ class CI_Form_validation {
 	 * @param	string
 	 * @return	string
 	 */
-	function valid_ip($ip)
+	public function valid_ip($ip)
 	{
 		return $this->CI->input->valid_ip($ip);
 	}
@@ -1078,7 +1095,7 @@ class CI_Form_validation {
 	 * @param	string
 	 * @return	bool
 	 */
-	function alpha($str)
+	public function alpha($str)
 	{
 		return ( ! preg_match("/^([a-z])+$/i", $str)) ? FALSE : TRUE;
 	}
@@ -1092,7 +1109,7 @@ class CI_Form_validation {
 	 * @param	string
 	 * @return	bool
 	 */
-	function alpha_numeric($str)
+	public function alpha_numeric($str)
 	{
 		return ( ! preg_match("/^([a-z0-9])+$/i", $str)) ? FALSE : TRUE;
 	}
@@ -1106,7 +1123,7 @@ class CI_Form_validation {
 	 * @param	string
 	 * @return	bool
 	 */
-	function alpha_dash($str)
+	public function alpha_dash($str)
 	{
 		return ( ! preg_match("/^([-a-z0-9_-])+$/i", $str)) ? FALSE : TRUE;
 	}
@@ -1120,7 +1137,7 @@ class CI_Form_validation {
 	 * @param	string
 	 * @return	bool
 	 */
-	function numeric($str)
+	public function numeric($str)
 	{
 		return (bool)preg_match( '/^[\-+]?[0-9]*\.?[0-9]+$/', $str);
 
@@ -1135,7 +1152,7 @@ class CI_Form_validation {
 	 * @param	string
 	 * @return	bool
 	 */
-	function is_numeric($str)
+	public function is_numeric($str)
 	{
 		return ( ! is_numeric($str)) ? FALSE : TRUE;
 	}
@@ -1149,7 +1166,7 @@ class CI_Form_validation {
 	 * @param	string
 	 * @return	bool
 	 */
-	function integer($str)
+	public function integer($str)
 	{
 		return (bool) preg_match('/^[\-+]?[0-9]+$/', $str);
 	}
@@ -1163,7 +1180,7 @@ class CI_Form_validation {
 	 * @param	string
 	 * @return	bool
 	 */
-	function decimal($str)
+	public function decimal($str)
 	{
 		return (bool) preg_match('/^[\-+]?[0-9]+\.[0-9]+$/', $str);
 	}
@@ -1177,7 +1194,7 @@ class CI_Form_validation {
 	 * @param	string
 	 * @return	bool
 	 */
-	function greater_than($str, $min)
+	public function greater_than($str, $min)
 	{
 		if ( ! is_numeric($str))
 		{
@@ -1195,7 +1212,7 @@ class CI_Form_validation {
 	 * @param	string
 	 * @return	bool
 	 */
-	function less_than($str, $max)
+	public function less_than($str, $max)
 	{
 		if ( ! is_numeric($str))
 		{
@@ -1213,7 +1230,7 @@ class CI_Form_validation {
 	 * @param	string
 	 * @return	bool
 	 */
-	function is_natural($str)
+	public function is_natural($str)
 	{
 		return (bool) preg_match( '/^[0-9]+$/', $str);
 	}
@@ -1227,7 +1244,7 @@ class CI_Form_validation {
 	 * @param	string
 	 * @return	bool
 	 */
-	function is_natural_no_zero($str)
+	public function is_natural_no_zero($str)
 	{
 		if ( ! preg_match( '/^[0-9]+$/', $str))
 		{
@@ -1254,7 +1271,7 @@ class CI_Form_validation {
 	 * @param	string
 	 * @return	bool
 	 */
-	function valid_base64($str)
+	public function valid_base64($str)
 	{
 		return (bool) ! preg_match('/[^a-zA-Z0-9\/\+=]/', $str);
 	}
@@ -1271,7 +1288,7 @@ class CI_Form_validation {
 	 * @param	string
 	 * @return	string
 	 */
-	function prep_for_form($data = '')
+	public function prep_for_form($data = '')
 	{
 		if (is_array($data))
 		{
@@ -1300,7 +1317,7 @@ class CI_Form_validation {
 	 * @param	string
 	 * @return	string
 	 */
-	function prep_url($str = '')
+	public function prep_url($str = '')
 	{
 		if ($str == 'http://' OR $str == '')
 		{
@@ -1324,7 +1341,7 @@ class CI_Form_validation {
 	 * @param	string
 	 * @return	string
 	 */
-	function strip_image_tags($str)
+	public function strip_image_tags($str)
 	{
 		return $this->CI->input->strip_image_tags($str);
 	}
@@ -1338,7 +1355,7 @@ class CI_Form_validation {
 	 * @param	string
 	 * @return	string
 	 */
-	function xss_clean($str)
+	public function xss_clean($str)
 	{
 		return $this->CI->security->xss_clean($str);
 	}
@@ -1352,7 +1369,7 @@ class CI_Form_validation {
 	 * @param	string
 	 * @return	string
 	 */
-	function encode_php_tags($str)
+	public function encode_php_tags($str)
 	{
 		return str_replace(array('<?php', '<?PHP', '<?', '?>'),  array('&lt;?php', '&lt;?PHP', '&lt;?', '?&gt;'), $str);
 	}
diff --git a/system/libraries/Migration.php b/system/libraries/Migration.php
new file mode 100644
index 000000000..3943ec130
--- /dev/null
+++ b/system/libraries/Migration.php
@@ -0,0 +1,338 @@
+<?php defined('BASEPATH') OR exit('No direct script access allowed');
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP 5.1.6 or newer
+ *
+ * @package		CodeIgniter
+ * @author		EllisLab Dev Team
+ * @copyright	Copyright (c) 2006 - 2011, EllisLab, Inc.
+ * @license		http://codeigniter.com/user_guide/license.html
+ * @link		http://codeigniter.com
+ * @since		Version 1.0
+ * @filesource
+ */
+
+// ------------------------------------------------------------------------
+
+/**
+ * Migration Class
+ *
+ * All migrations should implement this, forces up() and down() and gives
+ * access to the CI super-global.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Libraries
+ * @author		Reactor Engineers
+ * @link
+ */
+class CI_Migration {
+
+	protected $_migration_enabled = FALSE;
+	protected $_migration_path = NULL;
+	protected $_migration_version = 0;
+
+	protected $_error_string = '';
+
+	public function __construct($config = array())
+	{
+		# Only run this constructor on main library load
+		if (get_parent_class($this) !== FALSE)
+		{
+			return;
+		}
+
+		foreach ($config as $key => $val)
+		{
+			$this->{'_' . $key} = $val;
+		}
+
+		log_message('debug', 'Migrations class initialized');
+
+		// Are they trying to use migrations while it is disabled?
+		if ($this->_migration_enabled !== TRUE)
+		{
+			show_error('Migrations has been loaded but is disabled or set up incorrectly.');
+		}
+
+		// If not set, set it
+		$this->_migration_path == '' OR $this->_migration_path = APPPATH . 'migrations/';
+
+		// Add trailing slash if not set
+		$this->_migration_path = rtrim($this->_migration_path, '/').'/';
+
+		// Load migration language
+		$this->lang->load('migration');
+
+		// They'll probably be using dbforge
+		$this->load->dbforge();
+
+		// If the migrations table is missing, make it
+		if ( ! $this->db->table_exists('migrations'))
+		{
+			$this->dbforge->add_field(array(
+				'version' => array('type' => 'INT', 'constraint' => 3),
+			));
+
+			$this->dbforge->create_table('migrations', TRUE);
+
+			$this->db->insert('migrations', array('version' => 0));
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Migrate to a schema version
+	 *
+	 * Calls each migration step required to get to the schema version of
+	 * choice
+	 *
+	 * @access	public
+	 * @param $version integer	Target schema version
+	 * @return	mixed	TRUE if already latest, FALSE if failed, int if upgraded
+	 */
+	public function version($target_version)
+	{
+		$start = $current_version = $this->_get_version();
+		$stop = $target_version;
+
+		if ($target_version > $current_version)
+		{
+			// Moving Up
+			++$start;
+			++$stop;
+			$step = 1;
+		}
+
+		else
+		{
+			// Moving Down
+			$step = -1;
+		}
+		
+		$method = $step === 1 ? 'up' : 'down';
+		$migrations = array();
+
+		// We now prepare to actually DO the migrations
+		// But first let's make sure that everything is the way it should be
+		for ($i = $start; $i != $stop; $i += $step)
+		{
+			$f = glob(sprintf($this->_migration_path . '%03d_*.php', $i));
+
+			// Only one migration per step is permitted
+			if (count($f) > 1)
+			{
+				$this->_error_string = sprintf($this->lang->line('migration_multiple_version'), $i);
+				return FALSE;
+			}
+
+			// Migration step not found
+			if (count($f) == 0)
+			{
+				// If trying to migrate up to a version greater than the last
+				// existing one, migrate to the last one.
+				if ($step == 1)
+				{
+					break;
+				}
+
+				// If trying to migrate down but we're missing a step,
+				// something must definitely be wrong.
+				$this->_error_string = sprintf($this->lang->line('migration_not_found'), $i);
+				return FALSE;
+			}
+
+			$file = basename($f[0]);
+			$name = basename($f[0], '.php');
+
+			// Filename validations
+			if (preg_match('/^\d{3}_(\w+)$/', $name, $match))
+			{
+				$match[1] = strtolower($match[1]);
+
+				// Cannot repeat a migration at different steps
+				if (in_array($match[1], $migrations))
+				{
+					$this->_error_string = sprintf($this->lang->line('migration_multiple_version'), $match[1]);
+					return FALSE;
+				}
+
+				include $f[0];
+				$class = 'Migration_' . ucfirst($match[1]);
+
+				if ( ! class_exists($class))
+				{
+					$this->_error_string = sprintf($this->lang->line('migration_class_doesnt_exist'), $class);
+					return FALSE;
+				}
+
+				if ( ! is_callable(array($class, $method)))
+				{
+					$this->_error_string = sprintf($this->lang->line('migration_missing_'.$method.'_method'), $class);
+					return FALSE;
+				}
+
+				$migrations[] = $match[1];
+			}
+			else
+			{
+				$this->_error_string = sprintf($this->lang->line('migration_invalid_filename'), $file);
+				return FALSE;
+			}
+		}
+
+		log_message('debug', 'Current migration: ' . $current_version);
+
+		$version = $i + ($step == 1 ? -1 : 0);
+
+		// If there is nothing to do so quit
+		if ($migrations === array())
+		{
+			return TRUE;
+		}
+
+		log_message('debug', 'Migrating from ' . $method . ' to version ' . $version);
+
+		// Loop through the migrations
+		foreach ($migrations AS $migration)
+		{
+			// Run the migration class
+			$class = 'Migration_' . ucfirst(strtolower($migration));
+			call_user_func(array(new $class, $method));
+
+			$current_version += $step;
+			$this->_update_version($current_version);
+		}
+
+		log_message('debug', 'Finished migrating to '.$current_version);
+
+		return $current_version;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set's the schema to the latest migration
+	 *
+	 * @access	public
+	 * @return	mixed	true if already latest, false if failed, int if upgraded
+	 */
+	public function latest()
+	{
+		if ( ! $migrations = $this->find_migrations())
+		{
+			$this->_error_string = $this->line->lang('migration_none_found');
+			return false;
+		}
+
+		$last_migration = basename(end($migrations));
+		
+		// Calculate the last migration step from existing migration
+		// filenames and procceed to the standard version migration
+		return $this->version((int) substr($last_migration, 0, 3));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set's the schema to the migration version set in config
+	 *
+	 * @access	public
+	 * @return	mixed	true if already current, false if failed, int if upgraded
+	 */
+	public function current()
+	{
+		return $this->version($this->_migration_version);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Error string
+	 *
+	 * @access	public
+	 * @return	string	Error message returned as a string
+	 */
+	public function error_string()
+	{
+		return $this->_error_string;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set's the schema to the latest migration
+	 *
+	 * @access	protected
+	 * @return	mixed	true if already latest, false if failed, int if upgraded
+	 */
+	protected function find_migrations()
+	{
+		// Load all *_*.php files in the migrations path
+		$files = glob($this->_migration_path . '*_*.php');
+		$file_count = count($files);
+		
+		for ($i = 0; $i < $file_count; $i++)
+		{
+			// Mark wrongly formatted files as false for later filtering
+			$name = basename($files[$i], '.php');
+			if ( ! preg_match('/^\d{3}_(\w+)$/', $name))
+			{
+				$files[$i] = FALSE;
+			}
+		}
+		
+		sort($files);
+
+		return $files;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Retrieves current schema version
+	 *
+	 * @access	protected
+	 * @return	integer	Current Migration
+	 */
+	protected function _get_version()
+	{
+		$row = $this->db->get('migrations')->row();
+		return $row ? $row->version : 0;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Stores the current schema version
+	 *
+	 * @access	protected
+	 * @param $migrations integer	Migration reached
+	 * @return	void					Outputs a report of the migration
+	 */
+	protected function _update_version($migrations)
+	{
+		return $this->db->update('migrations', array(
+			'version' => $migrations
+		));
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Enable the use of CI super-global
+	 *
+	 * @access	public
+	 * @param $var
+	 * @return	mixed
+	 */
+	public function __get($var)
+	{
+		return get_instance()->$var;
+	}
+}
+
+/* End of file Migration.php */
+/* Location: ./system/libraries/Migration.php */
\ No newline at end of file
diff --git a/system/libraries/User_agent.php b/system/libraries/User_agent.php
index 016102a2a..0b77a7d42 100644
--- a/system/libraries/User_agent.php
+++ b/system/libraries/User_agent.php
@@ -142,7 +142,7 @@ class CI_User_agent {
 	{
 		$this->_set_platform();
 
-		foreach (array('_set_browser', '_set_robot', '_set_mobile') as $function)
+		foreach (array('_set_robot', '_set_browser', '_set_mobile') as $function)
 		{
 			if ($this->$function() === TRUE)
 			{