Old CodeIgniter libraries.

MY_inflector_helper.php

<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');

/**
 * Additional custom CodeIgniter Inflector Helpers
 *
 * @package  	CodeIgniter
 * @subpackage	Helpers
 * @category	Helpers
 * @author		Daniel Ott
 * @link		http://danott.us
 */

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

/**
 * Return the Twitter-style "relative time"
 *
 * Returns time() or its GMT equivalent based on the config file preference
 *
 * @access	public
 * @param	integer Unix timestamp
 * @return	string
 * @todo    Add future date support with "seconds away", "days away", etc.
 */
if ( ! function_exists('relative_time'))
{
	function relative_time($then)
	{
		// Need the date helper for the now() function
		$CI =& get_instance();
		$CI->load->helper('date');

		$diff = now() - strtotime($then);
		
		// If then is before now, $diff will be positive, and $then is in the past
		// If now is before then, $diff will be negative, and $then is in the future
		$direction = ($diff > 0) ? "ago" : "away";
		
		$diff = abs($diff);
		
		// It's a matter of seconds!
		if ($diff<60)
			return $diff . " " . pluralize("second", $diff) . " " . $direction;

		// It's a matter of minutes!
		$diff = round($diff/60);
		if ($diff<60)
			return $diff . " " . pluralize("minute", $diff) . " " . $direction;

		// It's a matter of hours!
		$diff = round($diff/60);
		if ($diff<24)
			return $diff . " " . pluralize("hour", $diff) . " " . $direction;

		// It's a matter of days!
		$diff = round($diff/24);
		if ($diff<7)
			return $diff . " " . pluralize("day", $diff) . " " . $direction;

		// It's a matter of weeks!
		$diff = round($diff/7);
		if ($diff<4)
			return $diff . " " . pluralize("week", $diff) . " " . $direction;
		
		// Forget about months and years, just say the date.
		return "on " . date("F j, Y", strtotime($then));
	}
}

/**
 * Pluralize a singular word
 *
 * CodeIgniter's built in inflector gives us a plural() function.
 * This is simply a wrapper around that, that does the actual pluralization
 * based on a passed in parameter of how many we're dealing with.
 *
 * @access	public
 * @param	string 
 * @param	integer
 * @param	string
 * @return	string
 */
if( ! function_exists('pluralize'))
{
	function pluralize($singular_word, $how_many = 2, $irregular_plural = null)
	{
		return ($how_many == 1) ? $singular_word : ((isset($irregular_plural)) ? $irregular_plural : plural($singular_word));
	}
}

/* End of file MY_inflector_helper.php */
/* Location: ./system/application/helpers/MY_inflector_helper.php */

MY_loader.php

<?php  if (!defined('BASEPATH')) exit('No direct script access allowed');

/**
 * CodeIgniter MY_Loader Class
 *
 * @package     CodeIgniter
 * @subpackage  Libraries
 * @category    Libraries
 * @author      Daniel Ott
 * @version     0.1
 * @link        http://codeigniter.com/wiki/Unobtrusive_XHR/
 *
 * In a default implementation of CodeIgniter, just drop this file in
 * ~/system/application/libraries/, and it will be completely ready to work.
 */

/**
 * We'll use one file extension globally. If someone has other needs they can
 * change this or build on the library.
 */
if (!defined('XHR_EXTENSION')) define('XHR_EXTENSION', 'json');


class MY_Loader extends CI_Loader {

    function MY_Loader() {
        parent::CI_Loader();
  
		/**
		 * Set an internal variable to know if the current controller request
		 * was made with XmlHttpRequest.
		 * Found at: http://codeigniter.com/forums/viewthread/59450/#292979
		 */
		$this->is_xhr = (isset($_SERVER['HTTP_X_REQUESTED_WITH']) && $_SERVER['HTTP_X_REQUESTED_WITH'] == "XMLHttpRequest");
    }

	/**
	 * This function has been modified in MY_Loader to automatically load the
	 * JSON version of a view, if the request was made through XMLHTTPRequest.
	 * Example $this->load->view('home/create_event') would originally load 
	 * home/create_event.php, now it would open home/create_event.json.php
	 *
	 * @access	public
	 * @param	string
	 * @param	array
	 * @param	bool
	 * @param   bool
	 * @return	void
	 * @todo	Optional fourth parameter that would override this functionality
	 */
	function view($view, $vars = array(), $return = FALSE, $ignore_xhr = FALSE)
	{

		// Only overloading things that are requested with XmlHttpRequest
		if($this->is_xhr && !$ignore_xhr)
		{
			/**
			 * Build the modified view's path in the most forgiving way. This
			 * will create the correct path if the .php extension is included
			 * or left out of the original call to $this->load->view()
			 */
			$modified_view = pathinfo($view, PATHINFO_DIRNAME) . "/" . pathinfo($view, PATHINFO_FILENAME) . "." . XHR_EXTENSION . ".php";
		
			/**
			 * Overloading the view will only take place if the new view file
			 * actually exists. Haven't tested this extensively in the field,
			 * may have to cut this part if there are performance hits.
			 */
			if( file_exists($this->_ci_view_path . $modified_view) )
			{
				log_message('debug', 'My_Loader detected XHR and a corresponding template. Now loading view: ' . $modified_view);
				$view = $modified_view;
			}
		}
	
		// Call as usual, the original or modified view.
		return parent::view($view, $vars, $return);
	}
}

/* End of file MY_Loader.php */
/* Location: ./system/application/libraries/My_Loader.php */