system/helpers/inflector_helper.php

<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
/**
 * CodeIgniter
 *
 * An open source application development framework for PHP 5.1.6 or newer
 *
 * @package		CodeIgniter
 * @author		ExpressionEngine Dev Team
 * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.
 * @license		http://codeigniter.com/user_guide/license.html
 * @link		http://codeigniter.com
 * @since		Version 1.0
 * @filesource
 */

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

/**
 * CodeIgniter Inflector Helpers
 *
 * @package		CodeIgniter
 * @subpackage	Helpers
 * @category	Helpers
 * @author		ExpressionEngine Dev Team
 * @link		http://codeigniter.com/user_guide/helpers/directory_helper.html
 */


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

/**
 * Singular
 *
 * Takes a plural word and makes it singular
 *
 * @access	public
 * @param	string
 * @return	str
 */
if ( ! function_exists('singular'))
{
	function singular($str)
	{
		$str = trim($str);
		$end = substr($str, -3);
        
        $str = preg_replace('/(.*)?([s|c]h)es/i','$1$2',$str);
        
		if (strtolower($end) == 'ies')
		{
			$str = substr($str, 0, strlen($str)-3).(preg_match('/[a-z]/',$end) ? 'y' : 'Y');
		}
		elseif (strtolower($end) == 'ses')
		{
			$str = substr($str, 0, strlen($str)-2);
		}
		else
		{
			$end = strtolower(substr($str, -1));

			if ($end == 's')
			{
				$str = substr($str, 0, strlen($str)-1);
			}
		}

		return $str;
	}
}

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

/**
 * Plural
 *
 * Takes a singular word and makes it plural
 *
 * @access	public
 * @param	string
 * @param	bool
 * @return	str
 */
if ( ! function_exists('plural'))
{
	function plural($str, $force = FALSE)
	{   
        $str = trim($str);
		$end = substr($str, -1);

		if (preg_match('/y/i',$end))
		{
			// Y preceded by vowel => regular plural
			$vowels = array('a', 'e', 'i', 'o', 'u', 'A', 'E', 'I', 'O', 'U');
			$str = in_array(substr($str, -2, 1), $vowels) ? $str.'s' : substr($str, 0, -1).'ies';
		}
		elseif (preg_match('/h/i',$end))
		{
            if(preg_match('/^[c|s]h$/i',substr($str, -2)))
			{
				$str .= 'es';
			}
			else
			{
				$str .= 's';
			}
		}
		elseif (preg_match('/s/i',$end))
		{
			if ($force == TRUE)
			{
				$str .= 'es';
			}
		}
		else
		{
			$str .= 's';
		}

		return $str;
	}
}

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

/**
 * Camelize
 *
 * Takes multiple words separated by spaces or underscores and camelizes them
 *
 * @access	public
 * @param	string
 * @return	str
 */
if ( ! function_exists('camelize'))
{
	function camelize($str)
	{
		$str = 'x'.strtolower(trim($str));
		$str = ucwords(preg_replace('/[\s_]+/', ' ', $str));
		return substr(str_replace(' ', '', $str), 1);
	}
}

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

/**
 * Underscore
 *
 * Takes multiple words separated by spaces and underscores them
 *
 * @access	public
 * @param	string
 * @return	str
 */
if ( ! function_exists('underscore'))
{
	function underscore($str)
	{
		return preg_replace('/[\s]+/', '_', strtolower(trim($str)));
	}
}

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

/**
 * Humanize
 *
 * Takes multiple words separated by underscores and changes them to spaces
 *
 * @access	public
 * @param	string
 * @return	str
 */
if ( ! function_exists('humanize'))
{
	function humanize($str)
	{
		return ucwords(preg_replace('/[_]+/', ' ', strtolower(trim($str))));
	}
}


/* End of file inflector_helper.php */
/* Location: ./system/helpers/inflector_helper.php */