<?php
/* SVN FILE: $Id$ */

/**
 * Number Helper.
 *
 * Methods to make numbers more readable.
 *
 * PHP versions 4 and 5
 *
 * CakePHP(tm) :  Rapid Development Framework <http://www.cakephp.org/>
 * Copyright 2005-2007, Cake Software Foundation, Inc.
 *								1785 E. Sahara Avenue, Suite 490-204
 *								Las Vegas, Nevada 89104
 *
 * Licensed under The MIT License
 * Redistributions of files must retain the above copyright notice.
 *
 * @filesource
 * @copyright		Copyright 2005-2007, Cake Software Foundation, Inc.
 * @link				http://www.cakefoundation.org/projects/info/cakephp CakePHP(tm) Project
 * @package			cake
 * @subpackage		cake.cake.libs.view.helpers
 * @since			CakePHP(tm) v 0.10.0.1076
 * @version			$Revision$
 * @modifiedby		$LastChangedBy$
 * @lastmodified	$Date$
 * @license			http://www.opensource.org/licenses/mit-license.php The MIT License
 */

/**
 * Number helper library.
 *
 * Methods to make numbers more readable.
 *
 * @package 	cake
 * @subpackage	cake.cake.libs.view.helpers
 */
class NumberHelper extends AppHelper {
/**
 * Formats a number with a level of precision.
 *
 * @param  float	$number	A floating point number.
 * @param  integer $precision The precision of the returned number.
 * @return float Enter description here...
 * @static
 */
	function precision($number, $precision = 3) {
		return sprintf("%01.{$precision}f", $number);
	}

/**
 * Returns a formatted-for-humans file size.
 *
 * @param integer $length Size in bytes
 * @return string Human readable size
 * @static
 */
	function toReadableSize($size) {
		switch($size) {
			case 1:
				return '1 Byte';
			case $size < 1024:
				return $size . ' Bytes';
			case $size < 1024 * 1024:
				return NumberHelper::precision($size / 1024, 0) . ' KB';
			case $size < 1024 * 1024 * 1024:
				return NumberHelper::precision($size / 1024 / 1024, 2) . ' MB';
			case $size < 1024 * 1024 * 1024 * 1024:
				return NumberHelper::precision($size / 1024 / 1024 / 1024, 2) . ' GB';
			case $size < 1024 * 1024 * 1024 * 1024 * 1024:
				return NumberHelper::precision($size / 1024 / 1024 / 1024 / 1024, 2) . ' TB';
		}
	}
/**
 * Formats a number into a percentage string.
 *
 * @param float $number A floating point number
 * @param integer $precision The precision of the returned number
 * @return string Percentage string
 * @static
 */
	function toPercentage($number, $precision = 2) {
		return NumberHelper::precision($number, $precision) . '%';
	}
/**
 * Formats a number into a percentage string.
 *
 * @param float $number A floating point number
 * @param integer $precision The precision of the returned number
 * @return string Percentage string
 * @static
 */
	function currency ($number, $currency = 'USD') {
		switch ($currency) {
			case "EUR":
				$return = "&#128; " . number_format ($number, 2, ",", ".");
			break;
			case "GBP":
				$return = "&#163;" . number_format ($number, 2, ".", ",");
			break;
			case 'USD':
			default:
				$return = "$" . number_format ($number, 2, ".", ",");
			break;
		}
		return $return;
	}
}

?>