Subversion-Projekte lars-tiefland.cakephp

<?php
/* SVN FILE: $Id: number.php 7945 2008-12-19 02:16:01Z gwoo $ */
/**
 * Number Helper.
 *
 * Methods to make numbers more readable.
 *
 * PHP versions 4 and 5
 *
 * CakePHP(tm) :  Rapid Development Framework (http://www.cakephp.org)
 * Copyright 2005-2008, Cake Software Foundation, Inc. (http://www.cakefoundation.org)
 *
 * Licensed under The MIT License
 * Redistributions of files must retain the above copyright notice.
 *
 * @filesource
 * @copyright     Copyright 2005-2008, Cake Software Foundation, Inc. (http://www.cakefoundation.org)
 * @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: 7945 $
 * @modifiedby    $LastChangedBy: gwoo $
 * @lastmodified  $Date: 2008-12-18 18:16:01 -0800 (Thu, 18 Dec 2008) $
 * @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 0:
                                return '0 Bytes';
                        case 1:
                                return '1 Byte';
                        case $size < 1024:
                                return $size . ' Bytes';
                        case round($size / 1024) < 1024:
                                return $this->precision($size / 1024, 0) . ' KB';
                        case round($size / 1024 / 1024, 2) < 1024:
                                return $this->precision($size / 1024 / 1024, 2) . ' MB';
                        case round($size / 1024 / 1024 / 1024, 2) < 1024:
                                return $this->precision($size / 1024 / 1024 / 1024, 2) . ' GB';
                        default:
                                return $this->precision($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 $this->precision($number, $precision) . '%';
        }
/**
 * Formats a number into a currency format.
 *
 * @param float $number A floating point number
 * @param integer $options if int then places, if string then before, if (,.-) then use it
 *                                                      or array with places and before keys
 * @return string formatted number
 * @static
 */
        function format($number, $options = false) {
                $places = 0;
                if (is_int($options)) {
                        $places = $options;
                }

                $separators = array(',', '.', '-', ':');

                $before = $after = null;
                if (is_string($options) && !in_array($options, $separators)) {
                        $before = $options;
                }
                $thousands = ',';
                if (!is_array($options) && in_array($options, $separators)) {
                        $thousands = $options;
                }
                $decimals = '.';
                if (!is_array($options) && in_array($options, $separators)) {
                        $decimals = $options;
                }

                $escape = true;
                if (is_array($options)) {
                        $options = array_merge(array('before'=>'$', 'places' => 2, 'thousands' => ',', 'decimals' => '.'), $options);
                        extract($options);
                }

                $out = $before . number_format($number, $places, $decimals, $thousands) . $after;

                if ($escape) {
                        return h($out);
                }
                return $out;
        }
/**
 * Formats a number into a currency format.
 *
 * @param float $number
 * @param string $currency Shortcut to default options. Valid values are 'USD', 'EUR', 'GBP', otherwise
 *               set at least 'before' and 'after' options.
 * @param array $options
 * @return string Number formatted as a currency.
 */
        function currency($number, $currency = 'USD', $options = array()) {
                $default = array(
                        'before'=>'', 'after' => '', 'zero' => '0', 'places' => 2, 'thousands' => ',',
                        'decimals' => '.','negative' => '()', 'escape' => true
                );
                $currencies = array(
                        'USD' => array(
                                'before' => '$', 'after' => 'c', 'zero' => 0, 'places' => 2, 'thousands' => ',',
                                'decimals' => '.', 'negative' => '()', 'escape' => true
                        ),
                        'GBP' => array(
                                'before'=>'&#163;', 'after' => 'p', 'zero' => 0, 'places' => 2, 'thousands' => ',',
                                'decimals' => '.', 'negative' => '()','escape' => false
                        ),
                        'EUR' => array(
                                'before'=>'&#8364;', 'after' => 'c', 'zero' => 0, 'places' => 2, 'thousands' => '.',
                                'decimals' => ',', 'negative' => '()', 'escape' => false
                        )
                );

                if (isset($currencies[$currency])) {
                        $default = $currencies[$currency];
                } elseif (is_string($currency)) {
                        $options['before'] = $currency;
                }

                $options = array_merge($default, $options);

                $result = null;

                if ($number == 0 ) {
                        if ($options['zero'] !== 0 ) {
                                return $options['zero'];
                        }
                        $options['after'] = null;
                } elseif ($number < 1 && $number > -1 ) {
                        $multiply = intval('1' . str_pad('', $options['places'], '0'));
                        $number = $number * $multiply;
                        $options['before'] = null;
                        $options['places'] = null;
                } else {
                        $options['after'] = null;
                }

                $abs = abs($number);
                $result = $this->format($abs, $options);

                if ($number < 0 ) {
                        if ($options['negative'] == '()') {
                                $result = '(' . $result .')';
                        } else {
                                $result = $options['negative'] . $result;
                        }
                }
                return $result;
        }
}
?>