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gyro/core/lib/helpers/locale.cls.php

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<?php
/**
 * Manages Encoding and languages
 * 
 * @author Gerd Riesselmann
 * @ingroup Lib
 */
class GyroLocale {
        const UTF8 = 'UTF-8';
        
        private static $language = APP_LANG;
        private static $charset = APP_CHARSET;
        
        /**
         * Set an according locale (used for date, and number formatting)
         * 
         * Sets language and charset, too
         * 
         * @param string $lang Language, like 'en', or 'en_US'
         * @param string $charset A Charset like "latin1" or "UTF-8"
         */
        public static function set_locale($lang, $charset = APP_CHARSET) {
                self::set_language($lang);
                self::set_charset($charset);
                
                $locales = self::get_locales($lang);
                $locales_encoded = array();
                $encoding = strtolower(str_replace('-', '', $charset));
                foreach($locales as $l) {
                        $locales_encoded[] = $l . '.' . $encoding;
                }
                setlocale(LC_ALL, array_merge($locales_encoded, $locales));
                if (strtolower($lang) == 'en_us') {
                        GyroDate::$local_date_order = GyroDate::MONTH_DAY_YEAR;
                }
                else {
                        GyroDate::$local_date_order = GyroDate::DAY_MONTH_YEAR;
                }
        }
        
        /**
         * Returns array of possible locales for a language
         * 
         * E.g. for "en" would return "en_US", "en"
         *
         * @param string $lang
         * @return array
         */
        public static function get_locales($lang) {
                $ret = array();
                if (strlen($lang) == 2) {
                        switch ($lang) {
                        case 'en':
                                $ret[] = 'en_US';
                                $ret[] = 'en_GB';
                                break;
                        default:
                                // add xx_XX
                                $ret[] = $lang . '_' . strtoupper($lang);
                                break;
                        }
                }
                $ret[] = $lang;
                return $ret;            
        }
        
        /**
         * Sets language, but does not affect locale. Returns old lang
         *
         * @param string $lang
         */
        public static function set_language($lang) {
                $ret = self::$language;
                self::$language = $lang;
                return $ret;
        }
        
        /**
         * Sets charset, but does not affect locale
         *
         * @param string $charset
         */
        public static function set_charset($charset) {
                self::$charset = $charset;
        }
        
        /**
         * Returns current language
         *
         * @return string
         */
        public static function get_language() {
                return self::$language;
        }

        /**
         * Returns current charset
         *
         * @return string
         */
        public static function get_charset() {
                return self::$charset;
        }
        
        /**
         * Returns true, if charset is UTF-8
         */
        public static function is_utf8() {
                return strtoupper(self::get_charset()) == self::UTF8;                   
        }
}

if (!class_exists('Locale')) {
        class Locale extends GyroLocale {}
}

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