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

/**
 * Number Helper.
 *
 * Methods to make numbers more readable.
 *
 * PHP versions 4 and 5
 *
 * CakePHP :  Rapid Development Framework <http://www.cakephp.org/>
 * Copyright (c) 2006, 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 (c) 2006, Cake Software Foundation, Inc.
 * @link         http://www.cakefoundation.org/projects/info/cakephp CakePHP Project
 * @package      cake
 * @subpackage   cake.cake.libs.view.helpers
 * @since        CakePHP 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
 * @since      CakePHP v 0.10.0.1076
 *
 */
class NumberHelper extends Helper
{
/**
 * 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) . '%';
    }
}

?>