moodle/lib/classes/locale.php
2024-07-18 11:00:42 +08:00

81 lines
2.8 KiB
PHP

<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
namespace core;
/**
* Helper utility to interact with Locales.
*
* @package core
* @copyright 2024 Andrew Lyons <andrew@nicols.co.uk>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class locale {
/**
* Wrap for the native PHP function setlocale().
*
* @param int $category Specifying the category of the functions affected by the locale setting.
* @param string $locale E.g.: en_AU.utf8, en_GB.utf8, es_ES.utf8, fr_FR.utf8, de_DE.utf8.
* @return string|false Returns the new current locale, or FALSE on error.
*/
public static function set_locale(int $category = LC_ALL, string $locale = '0'): string|false {
if (strlen($locale) <= 255 || PHP_OS_FAMILY === 'BSD' || PHP_OS_FAMILY === 'Darwin') {
// We can set the whole locale all together.
return setlocale($category, $locale);
}
// Too long locale with linux or windows, let's split it into known and supported categories.
$split = explode(';', self::standardise_locale($locale));
foreach ($split as $element) {
[$category, $value] = explode('=', $element);
if (defined($category)) { // Only if the category exists, there are OS differences.
setlocale(constant($category), $value);
}
}
// Finally, return the complete configured locale.
return self::get_locale();
}
/**
* Get the current locale.
*
* @param int $category
* @return string|false
*/
public static function get_locale(int $category = LC_ALL): string|false {
return setlocale($category, "0");
}
/**
* Standardise a string-based locale, removing any deprecated locale categories and ordering it.
*
* @param string $locale
* @return string
*/
public static function standardise_locale(string $locale): string {
$locales = array_filter(
explode(';', $locale),
function ($locale): bool {
[$category, ] = explode('=', $locale);
return defined($category);
},
);
sort($locales);
return implode(';', $locales);
}
}