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<?php
/**
* CakePHP(tm) : Rapid Development Framework (https://cakephp.org)
* Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
*
* Licensed under The MIT License
* For full copyright and license information, please see the LICENSE.txt
* Redistributions of files must retain the above copyright notice.
*
* @copyright Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
* @link https://cakephp.org CakePHP(tm) Project
* @since 3.0.0
* @license https://opensource.org/licenses/mit-license.php MIT License
*/
namespace Cake\I18n;
/**
* Utility class used to determine the plural number to be used for a variable
* base on the locale
*/
class PluralRules
{
/**
* A map of locale => plurals group used to determine
* which plural rules apply to the language
*
* @var array
*/
protected static $_rulesMap = [
'af' => 1,
'am' => 2,
'ar' => 13,
'az' => 1,
'be' => 3,
'bg' => 1,
'bh' => 2,
'bn' => 1,
'bo' => 0,
'bs' => 3,
'ca' => 1,
'cs' => 4,
'cy' => 14,
'da' => 1,
'de' => 1,
'dz' => 0,
'el' => 1,
'en' => 1,
'eo' => 1,
'es' => 1,
'et' => 1,
'eu' => 1,
'fa' => 1,
'fi' => 1,
'fil' => 2,
'fo' => 1,
'fr' => 2,
'fur' => 1,
'fy' => 1,
'ga' => 5,
'gl' => 1,
'gu' => 1,
'gun' => 2,
'ha' => 1,
'he' => 1,
'hi' => 2,
'hr' => 3,
'hu' => 1,
'id' => 0,
'is' => 15,
'it' => 1,
'ja' => 0,
'jv' => 0,
'ka' => 0,
'km' => 0,
'kn' => 0,
'ko' => 0,
'ku' => 1,
'lb' => 1,
'ln' => 2,
'lt' => 6,
'lv' => 10,
'mg' => 2,
'mk' => 8,
'ml' => 1,
'mn' => 1,
'mr' => 1,
'ms' => 0,
'mt' => 9,
'nah' => 1,
'nb' => 1,
'ne' => 1,
'nl' => 1,
'nn' => 1,
'no' => 1,
'nso' => 2,
'om' => 1,
'or' => 1,
'pa' => 1,
'pap' => 1,
'pl' => 11,
'ps' => 1,
'pt_pt' => 2,
'pt' => 1,
'ro' => 12,
'ru' => 3,
'sk' => 4,
'sl' => 7,
'so' => 1,
'sq' => 1,
'sr' => 3,
'sv' => 1,
'sw' => 1,
'ta' => 1,
'te' => 1,
'th' => 0,
'ti' => 2,
'tk' => 1,
'tr' => 0,
'uk' => 3,
'ur' => 1,
'vi' => 0,
'wa' => 2,
'zh' => 0,
'zu' => 1,
];
/**
* Returns the plural form number for the passed locale corresponding
* to the countable provided in $n.
*
* @param string $locale The locale to get the rule calculated for.
* @param int|float $n The number to apply the rules to.
* @return int The plural rule number that should be used.
* @link http://localization-guide.readthedocs.org/en/latest/l10n/pluralforms.html
* @link https://developer.mozilla.org/en-US/docs/Mozilla/Localization/Localization_and_Plurals#List_of_Plural_Rules
*/
public static function calculate($locale, $n)
{
$locale = strtolower($locale);
if (!isset(static::$_rulesMap[$locale])) {
$locale = explode('_', $locale)[0];
}
if (!isset(static::$_rulesMap[$locale])) {
return 0;
}
switch (static::$_rulesMap[$locale]) {
case 0:
return 0;
case 1:
return $n == 1 ? 0 : 1;
case 2:
return $n > 1 ? 1 : 0;
case 3:
return $n % 10 == 1 && $n % 100 != 11 ? 0 :
(($n % 10 >= 2 && $n % 10 <= 4) && ($n % 100 < 10 || $n % 100 >= 20) ? 1 : 2);
case 4:
return $n == 1 ? 0 :
($n >= 2 && $n <= 4 ? 1 : 2);
case 5:
return $n == 1 ? 0 :
($n == 2 ? 1 : ($n < 7 ? 2 : ($n < 11 ? 3 : 4)));
case 6:
return $n % 10 == 1 && $n % 100 != 11 ? 0 :
($n % 10 >= 2 && ($n % 100 < 10 || $n % 100 >= 20) ? 1 : 2);
case 7:
return $n % 100 == 1 ? 1 :
($n % 100 == 2 ? 2 : ($n % 100 == 3 || $n % 100 == 4 ? 3 : 0));
case 8:
return $n % 10 == 1 ? 0 : ($n % 10 == 2 ? 1 : 2);
case 9:
return $n == 1 ? 0 :
($n == 0 || ($n % 100 > 0 && $n % 100 <= 10) ? 1 :
($n % 100 > 10 && $n % 100 < 20 ? 2 : 3));
case 10:
return $n % 10 == 1 && $n % 100 != 11 ? 0 : ($n != 0 ? 1 : 2);
case 11:
return $n == 1 ? 0 :
($n % 10 >= 2 && $n % 10 <= 4 && ($n % 100 < 10 || $n % 100 >= 20) ? 1 : 2);
case 12:
return $n == 1 ? 0 :
($n == 0 || $n % 100 > 0 && $n % 100 < 20 ? 1 : 2);
case 13:
return $n == 0 ? 0 :
($n == 1 ? 1 :
($n == 2 ? 2 :
($n % 100 >= 3 && $n % 100 <= 10 ? 3 :
($n % 100 >= 11 ? 4 : 5))));
case 14:
return $n == 1 ? 0 :
($n == 2 ? 1 :
($n != 8 && $n != 11 ? 2 : 3));
case 15:
return ($n % 10 != 1 || $n % 100 == 11) ? 1 : 0;
}
}
}