Remove previously deprecated Cart Library

6 files changed, 17 insertions, 983 deletions

diff --git a/system/libraries/Cart.php b/system/libraries/Cart.php
deleted file mode 100644
index 44d87e0bf..000000000
--- a/system/libraries/Cart.php
+++ /dev/null
@@ -1,567 +0,0 @@
-<?php
-/**
- * CodeIgniter
- *
- * An open source application development framework for PHP
- *
- * This content is released under the MIT License (MIT)
- *
- * Copyright (c) 2014 - 2016, British Columbia Institute of Technology
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- *
- * @package	CodeIgniter
- * @author	EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
- * @copyright	Copyright (c) 2014 - 2016, British Columbia Institute of Technology (http://bcit.ca/)
- * @license	http://opensource.org/licenses/MIT	MIT License
- * @link	https://codeigniter.com
- * @since	Version 1.0.0
- * @filesource
- */
-defined('BASEPATH') OR exit('No direct script access allowed');
-
-/**
- * Shopping Cart Class
- *
- * @package		CodeIgniter
- * @subpackage	Libraries
- * @category	Shopping Cart
- * @author		EllisLab Dev Team
- * @link		https://codeigniter.com/user_guide/libraries/cart.html
- * @deprecated	3.0.0	This class is too specific for CI.
- */
-class CI_Cart {
-
-	/**
-	 * These are the regular expression rules that we use to validate the product ID and product name
-	 * alpha-numeric, dashes, underscores, or periods
-	 *
-	 * @var string
-	 */
-	public $product_id_rules = '\.a-z0-9_-';
-
-	/**
-	 * These are the regular expression rules that we use to validate the product ID and product name
-	 * alpha-numeric, dashes, underscores, colons or periods
-	 *
-	 * @var string
-	 */
-	public $product_name_rules = '\w \-\.\:';
-
-	/**
-	 * only allow safe product names
-	 *
-	 * @var bool
-	 */
-	public $product_name_safe = TRUE;
-
-	// --------------------------------------------------------------------------
-
-	/**
-	 * Reference to CodeIgniter instance
-	 *
-	 * @var object
-	 */
-	protected $CI;
-
-	/**
-	 * Contents of the cart
-	 *
-	 * @var array
-	 */
-	protected $_cart_contents = array();
-
-	/**
-	 * Shopping Class Constructor
-	 *
-	 * The constructor loads the Session class, used to store the shopping cart contents.
-	 *
-	 * @param	array
-	 * @return	void
-	 */
-	public function __construct($params = array())
-	{
-		// Set the super object to a local variable for use later
-		$this->CI =& get_instance();
-
-		// Are any config settings being passed manually?  If so, set them
-		$config = is_array($params) ? $params : array();
-
-		// Load the Sessions class
-		$this->CI->load->driver('session', $config);
-
-		// Grab the shopping cart array from the session table
-		$this->_cart_contents = $this->CI->session->userdata('cart_contents');
-		if ($this->_cart_contents === NULL)
-		{
-			// No cart exists so we'll set some base values
-			$this->_cart_contents = array('cart_total' => 0, 'total_items' => 0);
-		}
-
-		log_message('info', 'Cart Class Initialized');
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Insert items into the cart and save it to the session table
-	 *
-	 * @param	array
-	 * @return	bool
-	 */
-	public function insert($items = array())
-	{
-		// Was any cart data passed? No? Bah...
-		if ( ! is_array($items) OR count($items) === 0)
-		{
-			log_message('error', 'The insert method must be passed an array containing data.');
-			return FALSE;
-		}
-
-		// You can either insert a single product using a one-dimensional array,
-		// or multiple products using a multi-dimensional one. The way we
-		// determine the array type is by looking for a required array key named "id"
-		// at the top level. If it's not found, we will assume it's a multi-dimensional array.
-
-		$save_cart = FALSE;
-		if (isset($items['id']))
-		{
-			if (($rowid = $this->_insert($items)))
-			{
-				$save_cart = TRUE;
-			}
-		}
-		else
-		{
-			foreach ($items as $val)
-			{
-				if (is_array($val) && isset($val['id']))
-				{
-					if ($this->_insert($val))
-					{
-						$save_cart = TRUE;
-					}
-				}
-			}
-		}
-
-		// Save the cart data if the insert was successful
-		if ($save_cart === TRUE)
-		{
-			$this->_save_cart();
-			return isset($rowid) ? $rowid : TRUE;
-		}
-
-		return FALSE;
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Insert
-	 *
-	 * @param	array
-	 * @return	bool
-	 */
-	protected function _insert($items = array())
-	{
-		// Was any cart data passed? No? Bah...
-		if ( ! is_array($items) OR count($items) === 0)
-		{
-			log_message('error', 'The insert method must be passed an array containing data.');
-			return FALSE;
-		}
-
-		// --------------------------------------------------------------------
-
-		// Does the $items array contain an id, quantity, price, and name?  These are required
-		if ( ! isset($items['id'], $items['qty'], $items['price'], $items['name']))
-		{
-			log_message('error', 'The cart array must contain a product ID, quantity, price, and name.');
-			return FALSE;
-		}
-
-		// --------------------------------------------------------------------
-
-		// Prep the quantity. It can only be a number.  Duh... also trim any leading zeros
-		$items['qty'] = (float) $items['qty'];
-
-		// If the quantity is zero or blank there's nothing for us to do
-		if ($items['qty'] == 0)
-		{
-			return FALSE;
-		}
-
-		// --------------------------------------------------------------------
-
-		// Validate the product ID. It can only be alpha-numeric, dashes, underscores or periods
-		// Not totally sure we should impose this rule, but it seems prudent to standardize IDs.
-		// Note: These can be user-specified by setting the $this->product_id_rules variable.
-		if ( ! preg_match('/^['.$this->product_id_rules.']+$/i', $items['id']))
-		{
-			log_message('error', 'Invalid product ID.  The product ID can only contain alpha-numeric characters, dashes, and underscores');
-			return FALSE;
-		}
-
-		// --------------------------------------------------------------------
-
-		// Validate the product name. It can only be alpha-numeric, dashes, underscores, colons or periods.
-		// Note: These can be user-specified by setting the $this->product_name_rules variable.
-		if ($this->product_name_safe && ! preg_match('/^['.$this->product_name_rules.']+$/i'.(UTF8_ENABLED ? 'u' : ''), $items['name']))
-		{
-			log_message('error', 'An invalid name was submitted as the product name: '.$items['name'].' The name can only contain alpha-numeric characters, dashes, underscores, colons, and spaces');
-			return FALSE;
-		}
-
-		// --------------------------------------------------------------------
-
-		// Prep the price. Remove leading zeros and anything that isn't a number or decimal point.
-		$items['price'] = (float) $items['price'];
-
-		// We now need to create a unique identifier for the item being inserted into the cart.
-		// Every time something is added to the cart it is stored in the master cart array.
-		// Each row in the cart array, however, must have a unique index that identifies not only
-		// a particular product, but makes it possible to store identical products with different options.
-		// For example, what if someone buys two identical t-shirts (same product ID), but in
-		// different sizes?  The product ID (and other attributes, like the name) will be identical for
-		// both sizes because it's the same shirt. The only difference will be the size.
-		// Internally, we need to treat identical submissions, but with different options, as a unique product.
-		// Our solution is to convert the options array to a string and MD5 it along with the product ID.
-		// This becomes the unique "row ID"
-		if (isset($items['options']) && count($items['options']) > 0)
-		{
-			$rowid = md5($items['id'].serialize($items['options']));
-		}
-		else
-		{
-			// No options were submitted so we simply MD5 the product ID.
-			// Technically, we don't need to MD5 the ID in this case, but it makes
-			// sense to standardize the format of array indexes for both conditions
-			$rowid = md5($items['id']);
-		}
-
-		// --------------------------------------------------------------------
-
-		// Now that we have our unique "row ID", we'll add our cart items to the master array
-		// grab quantity if it's already there and add it on
-		$old_quantity = isset($this->_cart_contents[$rowid]['qty']) ? (int) $this->_cart_contents[$rowid]['qty'] : 0;
-
-		// Re-create the entry, just to make sure our index contains only the data from this submission
-		$items['rowid'] = $rowid;
-		$items['qty'] += $old_quantity;
-		$this->_cart_contents[$rowid] = $items;
-
-		return $rowid;
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Update the cart
-	 *
-	 * This function permits the quantity of a given item to be changed.
-	 * Typically it is called from the "view cart" page if a user makes
-	 * changes to the quantity before checkout. That array must contain the
-	 * product ID and quantity for each item.
-	 *
-	 * @param	array
-	 * @return	bool
-	 */
-	public function update($items = array())
-	{
-		// Was any cart data passed?
-		if ( ! is_array($items) OR count($items) === 0)
-		{
-			return FALSE;
-		}
-
-		// You can either update a single product using a one-dimensional array,
-		// or multiple products using a multi-dimensional one.  The way we
-		// determine the array type is by looking for a required array key named "rowid".
-		// If it's not found we assume it's a multi-dimensional array
-		$save_cart = FALSE;
-		if (isset($items['rowid']))
-		{
-			if ($this->_update($items) === TRUE)
-			{
-				$save_cart = TRUE;
-			}
-		}
-		else
-		{
-			foreach ($items as $val)
-			{
-				if (is_array($val) && isset($val['rowid']))
-				{
-					if ($this->_update($val) === TRUE)
-					{
-						$save_cart = TRUE;
-					}
-				}
-			}
-		}
-
-		// Save the cart data if the insert was successful
-		if ($save_cart === TRUE)
-		{
-			$this->_save_cart();
-			return TRUE;
-		}
-
-		return FALSE;
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Update the cart
-	 *
-	 * This function permits changing item properties.
-	 * Typically it is called from the "view cart" page if a user makes
-	 * changes to the quantity before checkout. That array must contain the
-	 * rowid and quantity for each item.
-	 *
-	 * @param	array
-	 * @return	bool
-	 */
-	protected function _update($items = array())
-	{
-		// Without these array indexes there is nothing we can do
-		if ( ! isset($items['rowid'], $this->_cart_contents[$items['rowid']]))
-		{
-			return FALSE;
-		}
-
-		// Prep the quantity
-		if (isset($items['qty']))
-		{
-			$items['qty'] = (float) $items['qty'];
-			// Is the quantity zero?  If so we will remove the item from the cart.
-			// If the quantity is greater than zero we are updating
-			if ($items['qty'] == 0)
-			{
-				unset($this->_cart_contents[$items['rowid']]);
-				return TRUE;
-			}
-		}
-
-		// find updatable keys
-		$keys = array_intersect(array_keys($this->_cart_contents[$items['rowid']]), array_keys($items));
-		// if a price was passed, make sure it contains valid data
-		if (isset($items['price']))
-		{
-			$items['price'] = (float) $items['price'];
-		}
-
-		// product id & name shouldn't be changed
-		foreach (array_diff($keys, array('id', 'name')) as $key)
-		{
-			$this->_cart_contents[$items['rowid']][$key] = $items[$key];
-		}
-
-		return TRUE;
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Save the cart array to the session DB
-	 *
-	 * @return	bool
-	 */
-	protected function _save_cart()
-	{
-		// Let's add up the individual prices and set the cart sub-total
-		$this->_cart_contents['total_items'] = $this->_cart_contents['cart_total'] = 0;
-		foreach ($this->_cart_contents as $key => $val)
-		{
-			// We make sure the array contains the proper indexes
-			if ( ! is_array($val) OR ! isset($val['price'], $val['qty']))
-			{
-				continue;
-			}
-
-			$this->_cart_contents['cart_total'] += ($val['price'] * $val['qty']);
-			$this->_cart_contents['total_items'] += $val['qty'];
-			$this->_cart_contents[$key]['subtotal'] = ($this->_cart_contents[$key]['price'] * $this->_cart_contents[$key]['qty']);
-		}
-
-		// Is our cart empty? If so we delete it from the session
-		if (count($this->_cart_contents) <= 2)
-		{
-			$this->CI->session->unset_userdata('cart_contents');
-
-			// Nothing more to do... coffee time!
-			return FALSE;
-		}
-
-		// If we made it this far it means that our cart has data.
-		// Let's pass it to the Session class so it can be stored
-		$this->CI->session->set_userdata(array('cart_contents' => $this->_cart_contents));
-
-		// Woot!
-		return TRUE;
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Cart Total
-	 *
-	 * @return	int
-	 */
-	public function total()
-	{
-		return $this->_cart_contents['cart_total'];
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Remove Item
-	 *
-	 * Removes an item from the cart
-	 *
-	 * @param	int
-	 * @return	bool
-	 */
-	 public function remove($rowid)
-	 {
-		// unset & save
-		unset($this->_cart_contents[$rowid]);
-		$this->_save_cart();
-		return TRUE;
-	 }
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Total Items
-	 *
-	 * Returns the total item count
-	 *
-	 * @return	int
-	 */
-	public function total_items()
-	{
-		return $this->_cart_contents['total_items'];
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Cart Contents
-	 *
-	 * Returns the entire cart array
-	 *
-	 * @param	bool
-	 * @return	array
-	 */
-	public function contents($newest_first = FALSE)
-	{
-		// do we want the newest first?
-		$cart = ($newest_first) ? array_reverse($this->_cart_contents) : $this->_cart_contents;
-
-		// Remove these so they don't create a problem when showing the cart table
-		unset($cart['total_items']);
-		unset($cart['cart_total']);
-
-		return $cart;
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Get cart item
-	 *
-	 * Returns the details of a specific item in the cart
-	 *
-	 * @param	string	$row_id
-	 * @return	array
-	 */
-	public function get_item($row_id)
-	{
-		return (in_array($row_id, array('total_items', 'cart_total'), TRUE) OR ! isset($this->_cart_contents[$row_id]))
-			? FALSE
-			: $this->_cart_contents[$row_id];
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Has options
-	 *
-	 * Returns TRUE if the rowid passed to this function correlates to an item
-	 * that has options associated with it.
-	 *
-	 * @param	string	$row_id = ''
-	 * @return	bool
-	 */
-	public function has_options($row_id = '')
-	{
-		return (isset($this->_cart_contents[$row_id]['options']) && count($this->_cart_contents[$row_id]['options']) !== 0);
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Product options
-	 *
-	 * Returns the an array of options, for a particular product row ID
-	 *
-	 * @param	string	$row_id = ''
-	 * @return	array
-	 */
-	public function product_options($row_id = '')
-	{
-		return isset($this->_cart_contents[$row_id]['options']) ? $this->_cart_contents[$row_id]['options'] : array();
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Format Number
-	 *
-	 * Returns the supplied number with commas and a decimal point.
-	 *
-	 * @param	float
-	 * @return	string
-	 */
-	public function format_number($n = '')
-	{
-		return ($n === '') ? '' : number_format( (float) $n, 2, '.', ',');
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Destroy the cart
-	 *
-	 * Empties the cart and kills the session
-	 *
-	 * @return	void
-	 */
-	public function destroy()
-	{
-		$this->_cart_contents = array('cart_total' => 0, 'total_items' => 0);
-		$this->CI->session->unset_userdata('cart_contents');
-	}
-
-}
diff --git a/tests/mocks/autoloader.php b/tests/mocks/autoloader.php
index 11825de2c..a912327ca 100644
--- a/tests/mocks/autoloader.php
+++ b/tests/mocks/autoloader.php
@@ -33,7 +33,6 @@ function autoload($class)
 
 	$ci_libraries = array(
 		'Calendar',
-		'Cart',
 		'Driver_Library',
 		'Email',
 		'Encrypt',
diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst
index 4d0b4cf4d..6a0b827ae 100644
--- a/user_guide_src/source/changelog.rst
+++ b/user_guide_src/source/changelog.rst
@@ -22,6 +22,7 @@ Release Date: Not Released
    -  Removed previously deprecated :doc:`Form Helper <helpers/form_helper>` function ``form_prep()`` (use :php:func:`html_escape()` instead).
    -  Removed previously deprecated *Email Helper* (had only two functions, aliases for PHP's native ``filter_var()`` and ``mail()``).
    -  Removed previously deprecated *Smiley Helper*.
+   -  Removed previously deprecated *Cart Library*.
    -  Removed previously deprecated *Javascript Library* (it was always experimental in the first place).
 
 -  Libraries
@@ -773,7 +774,7 @@ Release Date: March 30, 2015
       -  Added support for templating via an array in addition to the encoded string.
       -  Changed method ``get_total_days()`` to be an alias for :doc:`Date Helper <helpers/date_helper>` :php:func:`days_in_month()`.
 
-   -  :doc:`Cart Library <libraries/cart>` changes include:
+   -  *Cart Library* changes include:
 
       -  Deprecated the library as too specific for CodeIgniter.
       -  Added method ``remove()`` to remove a cart item, updating with quantity of 0 seemed like a hack but has remained to retain compatibility.
@@ -1042,7 +1043,7 @@ Bug fixes for 3.0
 -  Fixed a bug where :doc:`Database Forge <database/forge>` method ``create_table()`` with PostgreSQL database could lead to fetching the whole table.
 -  Fixed a bug (#795) - :doc:`Form Helper <helpers/form_helper>` :php:func:`form_open()` didn't add the default form *method* and *accept-charset* when an empty array is passed to it.
 -  Fixed a bug (#797) - :doc:`Date Helper <helpers/date_helper>` :php:func:`timespan()` was using incorrect seconds for year and month.
--  Fixed a bug in :doc:`Cart Library <libraries/cart>` method ``contents()`` where if called without a TRUE (or equal) parameter, it would fail due to a typo.
+-  Fixed a bug in *Cart Library* method ``contents()`` where if called without a TRUE (or equal) parameter, it would fail due to a typo.
 -  Fixed a bug (#406) - SQLSRV DB driver not returning resource on ``db_pconnect()``.
 -  Fixed a bug in :doc:`Image Manipulation Library <libraries/image_lib>` method ``gd_loaded()`` where it was possible for the script execution to end or a PHP E_WARNING message to be emitted.
 -  Fixed a bug in the :doc:`Pagination library <libraries/pagination>` where when use_page_numbers=TRUE previous link and page 1 link did not have the same url.
@@ -1179,7 +1180,7 @@ Bug fixes for 3.0
 -  Fixed a bug (#2298) - :doc:`Database Results <database/results>` method ``next_row()`` kept returning the last row, allowing for infinite loops.
 -  Fixed a bug (#2236, #2639) - :doc:`Form Helper <helpers/form_helper>` functions :php:func:`set_value()`, :php:func:`set_select()`, :php:func:`set_radio()`, :php:func:`set_checkbox()` didn't parse array notation for keys if the rule was not present in the :doc:`Form Validation Library <libraries/form_validation>`.
 -  Fixed a bug (#2353) - :doc:`Query Builder <database/query_builder>` erroneously prefixed literal strings with **dbprefix**.
--  Fixed a bug (#78) - :doc:`Cart Library <libraries/cart>` didn't allow non-English letters in product names.
+-  Fixed a bug (#78) - *Cart Library* didn't allow non-English letters in product names.
 -  Fixed a bug (#77) - :doc:`Database Class <database/index>` didn't properly handle the transaction "test mode" flag.
 -  Fixed a bug (#2380) - :doc:`URI Routing <general/routing>` method ``fetch_method()`` returned 'index' if the requested method name matches its controller name.
 -  Fixed a bug (#2388) - :doc:`Email Library <libraries/email>` used to ignore attachment errors, resulting in broken emails being sent.
@@ -1414,9 +1415,8 @@ Release Date: November 14, 2011
 
 -  Libraries
 
-   -  Changed ``$this->cart->insert()`` in the :doc:`Cart
-      Library <libraries/cart>` to return the Row ID if a single
-      item was inserted successfully.
+   -  Changed ``$this->cart->insert()`` in the *Cart Library*
+      to return the Row ID if a single item was inserted successfully.
    -  Added support to set an optional parameter in your callback rules
       of validation using the :doc:`Form Validation
       Library <libraries/form_validation>`.
@@ -1524,9 +1524,8 @@ Release Date: August 20, 2011
       string. See upgrade notes if using database sessions.
    -  Added $this->db->set_dbprefix() to the :doc:`Database
       Driver <database/queries>`.
-   -  Changed $this->cart->insert() in the :doc:`Cart
-      Library <libraries/cart>` to return the Row ID if a single
-      item was inserted successfully.
+   -  Changed ``$this->cart->insert()`` in the *Cart Library*
+      to return the Row ID if a single item was inserted successfully.
    -  Added $this->load->get_var() to the :doc:`Loader
       library <libraries/loader>` to retrieve global vars set with
       $this->load->view() and $this->load->vars().
@@ -1551,8 +1550,8 @@ Bug fixes for 2.0.3
    properly escaped.
 -  Fixed issue #199 - Attributes passed as string does not include a
    space between it and the opening tag.
--  Fixed a bug where the method $this->cart->total_items() from :doc:`Cart
-   Library <libraries/cart>` now returns the sum of the quantity
+-  Fixed a bug where the method ``$this->cart->total_items()`` from
+   *Cart Library* now returns the sum of the quantity
    of all items in the cart instead of your total count.
 -  Fixed a bug where not setting 'null' when adding fields in db_forge
    for mysql and mysqli drivers would default to NULL instead of NOT
@@ -1971,7 +1970,7 @@ Hg Tag: v1.7.2
 
 -  Libraries
 
-   -  Added a new :doc:`Cart Class <libraries/cart>`.
+   -  Added a new *Cart Class*.
    -  Added the ability to pass $config['file_name'] for the :doc:`File
       Uploading Class <libraries/file_uploading>` and rename the
       uploaded file.
diff --git a/user_guide_src/source/installation/upgrade_300.rst b/user_guide_src/source/installation/upgrade_300.rst
index 54f635cc0..7b9082679 100644
--- a/user_guide_src/source/installation/upgrade_300.rst
+++ b/user_guide_src/source/installation/upgrade_300.rst
@@ -559,12 +559,12 @@ implemented cryptographic functions.
 The Cart library
 ================
 
-The :doc:`Cart Library <../libraries/cart>`, similarly to the *Smiley Helper*
-is too specific for CodeIgniter. It is now deprecated and scheduled for
-removal in CodeIgniter 3.1+.
+The *Cart Library*, similarly to the *Smiley Helper* is too specific for
+CodeIgniter. It is now deprecated and scheduled for removal in
+CodeIgniter 3.1+.
 
-.. note:: The library is still available, but you're strongly encouraged to remove its usage sooner
-	rather than later.
+.. note:: The library is still available, but you're strongly encouraged to
+	remove its usage sooner rather than later.
 
 Database drivers 'mysql', 'sqlite', 'mssql', 'pdo/dblib'
 ========================================================
diff --git a/user_guide_src/source/installation/upgrade_320.rst b/user_guide_src/source/installation/upgrade_320.rst
index 597e1ecf2..b587470f2 100644
--- a/user_guide_src/source/installation/upgrade_320.rst
+++ b/user_guide_src/source/installation/upgrade_320.rst
@@ -147,6 +147,7 @@ version 3.0.x, that have been removed in 3.2.0:
 - ``read_file()`` :doc:`File Helper <../helpers/file_helper>` function (use ``file_get_contents()`` instead)
 - ``form_prep()`` :doc:`Form Helper <../helpers/form_helper>` function (use :php:func:`html_escape()` instead)
 
+- The entire *Cart Library* (an archived version is available on GitHub: `bcit-ci/ci3-cart-library <https://github.com/bcit-ci/ci3-cart-library>`_)
 - The entire *Javascript Library* (it was always experimental in the first place)
 
 - The entire *Email Helper*, which only had two functions:
diff --git a/user_guide_src/source/libraries/cart.rst b/user_guide_src/source/libraries/cart.rst
deleted file mode 100644
index be343320d..000000000
--- a/user_guide_src/source/libraries/cart.rst
+++ /dev/null
@@ -1,398 +0,0 @@
-###################
-Shopping Cart Class
-###################
-
-The Cart Class permits items to be added to a session that stays active
-while a user is browsing your site. These items can be retrieved and
-displayed in a standard "shopping cart" format, allowing the user to
-update the quantity or remove items from the cart.
-
-.. important:: The Cart library is DEPRECATED and should not be used. 
-	It is currently only kept for backwards compatibility.
-
-Please note that the Cart Class ONLY provides the core "cart"
-functionality. It does not provide shipping, credit card authorization,
-or other processing components.
-
-.. contents::
-  :local:
-
-.. raw:: html
-
-  <div class="custom-index container"></div>
-
-********************
-Using the Cart Class
-********************
-
-Initializing the Shopping Cart Class
-====================================
-
-.. important:: The Cart class utilizes CodeIgniter's :doc:`Session
-	Class <sessions>` to save the cart information to a database, so
-	before using the Cart class you must set up a database table as
-	indicated in the :doc:`Session Documentation <sessions>`, and set the
-	session preferences in your application/config/config.php file to
-	utilize a database.
-
-To initialize the Shopping Cart Class in your controller constructor,
-use the ``$this->load->library()`` method::
-
-	$this->load->library('cart');
-
-Once loaded, the Cart object will be available using::
-
-	$this->cart
-
-.. note:: The Cart Class will load and initialize the Session Class
-	automatically, so unless you are using sessions elsewhere in your
-	application, you do not need to load the Session class.
-
-Adding an Item to The Cart
-==========================
-
-To add an item to the shopping cart, simply pass an array with the
-product information to the ``$this->cart->insert()`` method, as shown
-below::
-
-	$data = array(
-		'id'      => 'sku_123ABC',
-		'qty'     => 1,
-		'price'   => 39.95,
-		'name'    => 'T-Shirt',
-		'options' => array('Size' => 'L', 'Color' => 'Red')
-	);
-
-	$this->cart->insert($data);
-
-.. important:: The first four array indexes above (id, qty, price, and
-	name) are **required**. If you omit any of them the data will not be
-	saved to the cart. The fifth index (options) is optional. It is intended
-	to be used in cases where your product has options associated with it.
-	Use an array for options, as shown above.
-
-The five reserved indexes are:
-
--  **id** - Each product in your store must have a unique identifier.
-   Typically this will be an "sku" or other such identifier.
--  **qty** - The quantity being purchased.
--  **price** - The price of the item.
--  **name** - The name of the item.
--  **options** - Any additional attributes that are needed to identify
-   the product. These must be passed via an array.
-
-In addition to the five indexes above, there are two reserved words:
-rowid and subtotal. These are used internally by the Cart class, so
-please do NOT use those words as index names when inserting data into
-the cart.
-
-Your array may contain additional data. Anything you include in your
-array will be stored in the session. However, it is best to standardize
-your data among all your products in order to make displaying the
-information in a table easier.
-
-::
-
-	$data = array(
-		'id'      => 'sku_123ABC',
-		'qty'     => 1,
-		'price'   => 39.95,
-		'name'    => 'T-Shirt',
-		'coupon'	 => 'XMAS-50OFF'
-	);
-
-	$this->cart->insert($data);
-
-The ``insert()`` method will return the $rowid if you successfully insert a
-single item.
-
-Adding Multiple Items to The Cart
-=================================
-
-By using a multi-dimensional array, as shown below, it is possible to
-add multiple products to the cart in one action. This is useful in cases
-where you wish to allow people to select from among several items on the
-same page.
-
-::
-
-	$data = array(
-		array(
-			'id'      => 'sku_123ABC',
-			'qty'     => 1,
-			'price'   => 39.95,
-			'name'    => 'T-Shirt',
-			'options' => array('Size' => 'L', 'Color' => 'Red')
-		),
-		array(
-			'id'      => 'sku_567ZYX',
-			'qty'     => 1,
-			'price'   => 9.95,
-			'name'    => 'Coffee Mug'
-		),
-		array(
-			'id'      => 'sku_965QRS',
-			'qty'     => 1,
-			'price'   => 29.95,
-			'name'    => 'Shot Glass'
-		)
-	);
-
-	$this->cart->insert($data);
-
-Displaying the Cart
-===================
-
-To display the cart you will create a :doc:`view
-file </general/views>` with code similar to the one shown below.
-
-Please note that this example uses the :doc:`form
-helper </helpers/form_helper>`.
-
-::
-
-	<?php echo form_open('path/to/controller/update/method'); ?>
-
-	<table cellpadding="6" cellspacing="1" style="width:100%" border="0">
-
-	<tr>
-		<th>QTY</th>
-		<th>Item Description</th>
-		<th style="text-align:right">Item Price</th>
-		<th style="text-align:right">Sub-Total</th>
-	</tr>
-
-	<?php $i = 1; ?>
-
-	<?php foreach ($this->cart->contents() as $items): ?>
-
-		<?php echo form_hidden($i.'[rowid]', $items['rowid']); ?>
-
-		<tr>
-			<td><?php echo form_input(array('name' => $i.'[qty]', 'value' => $items['qty'], 'maxlength' => '3', 'size' => '5')); ?></td>
-			<td>
-				<?php echo $items['name']; ?>
-
-				<?php if ($this->cart->has_options($items['rowid']) == TRUE): ?>
-
-					<p>
-						<?php foreach ($this->cart->product_options($items['rowid']) as $option_name => $option_value): ?>
-
-							<strong><?php echo $option_name; ?>:</strong> <?php echo $option_value; ?><br />
-
-						<?php endforeach; ?>
-					</p>
-
-				<?php endif; ?>
-
-			</td>
-			<td style="text-align:right"><?php echo $this->cart->format_number($items['price']); ?></td>
-			<td style="text-align:right">$<?php echo $this->cart->format_number($items['subtotal']); ?></td>
-		</tr>
-
-	<?php $i++; ?>
-
-	<?php endforeach; ?>
-
-	<tr>
-		<td colspan="2"> </td>
-		<td class="right"><strong>Total</strong></td>
-		<td class="right">$<?php echo $this->cart->format_number($this->cart->total()); ?></td>
-	</tr>
-
-	</table>
-
-	<p><?php echo form_submit('', 'Update your Cart'); ?></p>
-
-Updating The Cart
-=================
-
-To update the information in your cart, you must pass an array
-containing the Row ID and one or more pre-defined properties to the 
-``$this->cart->update()`` method.
-
-.. note:: If the quantity is set to zero, the item will be removed from
-	the cart.
-
-::
-
-	$data = array(
-		'rowid' => 'b99ccdf16028f015540f341130b6d8ec',
-		'qty'   => 3
-	);
-
-	$this->cart->update($data);
-
-	// Or a multi-dimensional array
-
-	$data = array(
-		array(
-			'rowid'   => 'b99ccdf16028f015540f341130b6d8ec',
-			'qty'     => 3
-		),
-		array(
-			'rowid'   => 'xw82g9q3r495893iajdh473990rikw23',
-			'qty'     => 4
-		),
-		array(
-			'rowid'   => 'fh4kdkkkaoe30njgoe92rkdkkobec333',
-			'qty'     => 2
-		)
-	);
-
-	$this->cart->update($data);
-
-You may also update any property you have previously defined when
-inserting the item such as options, price or other custom fields.
-
-::
-
-	$data = array(
-		'rowid'  => 'b99ccdf16028f015540f341130b6d8ec',
-		'qty'    => 1,
-		'price'	 => 49.95,
-		'coupon' => NULL
-	);
-
-	$this->cart->update($data);
-
-What is a Row ID?
-*****************
-
-The row ID is a unique identifier that is generated by the cart code
-when an item is added to the cart. The reason a unique ID is created
-is so that identical products with different options can be managed
-by the cart.
-
-For example, let's say someone buys two identical t-shirts (same product
-ID), but in different sizes. The product ID (and other attributes) will
-be identical for both sizes because it's the same shirt. The only
-difference will be the size. The cart must therefore have a means of
-identifying this difference so that the two sizes of shirts can be
-managed independently. It does so by creating a unique "row ID" based on
-the product ID and any options associated with it.
-
-In nearly all cases, updating the cart will be something the user does
-via the "view cart" page, so as a developer, it is unlikely that you
-will ever have to concern yourself with the "row ID", other than making
-sure your "view cart" page contains this information in a hidden form
-field, and making sure it gets passed to the ``update()`` method when
-the update form is submitted. Please examine the construction of the
-"view cart" page above for more information.
-
-
-***************
-Class Reference
-***************
-
-.. php:class:: CI_Cart
-
-	.. attribute:: $product_id_rules = '\.a-z0-9_-'
-
-		These are the regular expression rules that we use to validate the product
-		ID - alpha-numeric, dashes, underscores, or periods by default
-
-	.. attribute:: $product_name_rules	= '\w \-\.\:'
-
-		These are the regular expression rules that we use to validate the product ID and product name - alpha-numeric, dashes, underscores, colons or periods by
-		default
-
-	.. attribute:: $product_name_safe = TRUE
-
-		Whether or not to only allow safe product names. Default TRUE.
-
-
-	.. php:method:: insert([$items = array()])
-
-		:param	array	$items: Items to insert into the cart
-		:returns:	TRUE on success, FALSE on failure
-		:rtype:	bool
-
-		Insert items into the cart and save it to the session table. Returns TRUE
-		on success and FALSE on failure.
-
-
-	.. php:method:: update([$items = array()])
-
-		:param	array	$items: Items to update in the cart
-		:returns:	TRUE on success, FALSE on failure
-		:rtype:	bool
-
-		This method permits changing the properties of a given item.
-		Typically it is called from the "view cart" page if a user makes changes
-		to the quantity before checkout. That array must contain the rowid
-		for each item.
-
-	.. php:method:: remove($rowid)
-
-		:param	int	$rowid: ID of the item to remove from the cart
-		:returns:	TRUE on success, FALSE on failure
-		:rtype:	bool
-
-		Allows you to remove an item from the shopping cart by passing it the
-		``$rowid``.
-
-	.. php:method:: total()
-
-		:returns:	Total amount
-		:rtype:	int
-
-		Displays the total amount in the cart.
-
-
-	.. php:method:: total_items()
-
-		:returns:	Total amount of items in the cart
-		:rtype:	int
-
-		Displays the total number of items in the cart.
-
-
-	.. php:method:: contents([$newest_first = FALSE])
-
-		:param	bool	$newest_first: Whether to order the array with newest items first
-		:returns:	An array of cart contents
-		:rtype:	array
-
-		Returns an array containing everything in the cart. You can sort the
-		order by which the array is returned by passing it TRUE where the contents
-		will be sorted from newest to oldest, otherwise it is sorted from oldest
-		to newest.
-
-	.. php:method:: get_item($row_id)
-
-		:param	int	$row_id: Row ID to retrieve
-		:returns:	Array of item data
-		:rtype:	array
-
-		Returns an array containing data for the item matching the specified row
-		ID, or FALSE if no such item exists.
-
-	.. php:method:: has_options($row_id = '')
-
-		:param	int	$row_id: Row ID to inspect
-		:returns:	TRUE if options exist, FALSE otherwise
-		:rtype:	bool
-
-		Returns TRUE (boolean) if a particular row in the cart contains options.
-		This method is designed to be used in a loop with ``contents()``, since
-		you must pass the rowid to this method, as shown in the Displaying
-		the Cart example above.
-
-	.. php:method:: product_options([$row_id = ''])
-
-		:param	int	$row_id: Row ID
-		:returns:	Array of product options
-		:rtype:	array
-
-		Returns an array of options for a particular product. This method is
-		designed to be used in a loop with ``contents()``, since you
-		must pass the rowid to this method, as shown in the Displaying the
-		Cart example above.
-
-	.. php:method:: destroy()
-
-		:rtype: void
-
-		Permits you to destroy the cart. This method will likely be called
-		when you are finished processing the customer's order.
\ No newline at end of file