<?php defined('SYSPATH') OR die('No direct access allowed.');

/**

 * Format helper class.

 *

 * $Id: format.php 4070 2009-03-11 20:37:38Z Geert $

 *

 * @package    Core

 * @author     Kohana Team

 * @copyright  (c) 2007-2008 Kohana Team

 * @license    http://kohanaphp.com/license.html

 */

class format_Core {



	/**

	 * Formats a phone number according to the specified format.

	 *

	 * @param   string  phone number

	 * @param   string  format string

	 * @return  string

	 */



 

function utf8_substr($str,$start)

{

   preg_match_all("/./su", $str, $ar);



   if(func_num_args() >= 3) {

       $end = func_get_arg(2);

       return join("",array_slice($ar[0],$start,$end));

   } else {

       return join("",array_slice($ar[0],$start));

   }

}	 



	

public static function makeUrlFriendly($title)

{

	//$output = utf8_substr($title, 0, 240);

	$output = strtolower($title);		

	$output = preg_replace("/\s/" , "_", $output); 	//'/\s/e' Replace spaces with underscores

	$output = str_replace('_', '-', $output); 	

	$output = str_replace("&amp;", '', $output); 	 

	//$output = str_replace("__", "_", $output); 	 

	$output = str_replace("---", "-", $output); 	 

	$output = str_replace("/", "", $output);

	$output = str_replace("\\", "", $output);

	$output = str_replace("'", "", $output); 	 

	$output = str_replace(",", "", $output); 	 

	$output = str_replace(";", "", $output); 	 

	$output = str_replace(":", "", $output); 	 

	$output = str_replace(".", "-", $output); 	 

	$output = str_replace("?", "", $output); 	 

	$output = str_replace("=", "-", $output); 	 

	$output = str_replace("+", "", $output); 	 

	$output = str_replace("$", "", $output); 	 

	$output = str_replace("&", "", $output); 	 

	$output = str_replace("!", "", $output); 	 

	$output = str_replace(">>", "-", $output); 	 

	$output = str_replace(">", "-", $output); 	 

	$output = str_replace("<<", "-", $output); 	 

	$output = str_replace("<", "-", $output); 	 

	$output = str_replace("*", "", $output); 	 

	$output = str_replace(")", "", $output); 	 

	$output = str_replace("(", "", $output);

	$output = str_replace("[", "", $output);

	$output = str_replace("]", "", $output);

	$output = str_replace("^", "", $output);

	$output = str_replace("%", "", $output);

	$output = str_replace("#", "", $output);

	$output = str_replace("@", "", $output);

	$output = str_replace("`", "", $output);

	$output = str_replace("\"", "", $output);

	$output = str_replace("--", "-", $output);

	return $output;

}	

	

	public static function first_words($string, $num, $tail='&nbsp;'){

		$words = str_word_count($string, 2, "<>:/.");

		

		/*** get the first $num words ***/

		$firstwords = array_slice( $words, 0, $num);

		

		/** return words in a string **/

		return  implode(' ', $firstwords).$tail;

	}



	public static function phone($number, $format = '3-3-4')

	{

		// Get rid of all non-digit characters in number string

		$number_clean = preg_replace('/\D+/', '', (string) $number);



		// Array of digits we need for a valid format

		$format_parts = preg_split('/[^1-9][^0-9]*/', $format, -1, PREG_SPLIT_NO_EMPTY);



		// Number must match digit count of a valid format

		if (strlen($number_clean) !== array_sum($format_parts))

			return $number;



		// Build regex

		$regex = '(\d{'.implode('})(\d{', $format_parts).'})';



		// Build replace string

		for ($i = 1, $c = count($format_parts); $i <= $c; $i++)

		{

			$format = preg_replace('/(?<!\$)[1-9][0-9]*/', '\$'.$i, $format, 1);

		}



		// Hocus pocus!

		return preg_replace('/^'.$regex.'$/', $format, $number_clean);

	}



	/**

	 * Formats a URL to contain a protocol at the beginning.

	 *

	 * @param   string  possibly incomplete URL

	 * @return  string

	 */

	public static function url($str = '')

	{

		// Clear protocol-only strings like "http://"

		if ($str === '' OR substr($str, -3) === '://')

			return '';



		// If no protocol given, prepend "http://" by default

		if (strpos($str, '://') === FALSE)

			return 'http://'.$str;



		// Return the original URL

		return $str;

	}

	

	public static function dollar($amount)

	{

		return '$' . number_format($amount, 2);

	}

	

	public static function format_date($date)

	{

		if (!is_numeric($date))

			$date = strtotime($date);

		return date("m/d/Y", $date);

	}

	

			

	public static function dollar_amount($dollar){

		return '$'. number_format($dollar, 2);

	}	





} // End format