pronto/core/i18n.php

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<?php
class I18N
{
        var $config_path;
        var $language_code;
        var $language_name;
        var $messages;

        function I18N($lang='en')
        {
                $this->config_path = DIR_FS_APP.DS.'config'.DS.'i18n';
                $this->set_language($lang);
        }

        function get_languages()
        {
                $cache =& Registry::get('pronto:cache');
                $langs =& $cache->get('pronto:i18n_languages');
                if(is_array($langs)) return $langs;

                $langs = array();
                foreach(glob($this->config_path.DS.'*') as $d) {
                        if(is_dir($d) && file_exists($d.DS.'messages.php')) {
                                include($d.DS.'messages.php');
                                $langs[$LANGUAGE_CODE] = $LANGUAGE_NAME;
                        }
                }
                $cache->set('pronto:i18n_languages', $langs);
                return $langs;
        }

        function set_language($lang)
        {
                $old = $this->get_language();
                $lang = strtolower($lang);
                $this->language_code = $lang;
                if(!$this->has_language($lang)) {
                        $this->messages = array();
                        return;
                }

                // Try the registry first, then the cache.
                $cache =& Registry::get('pronto:cache');
                $msgs =& Registry::get('pronto:i18n_language_'.$lang);
                if(!is_array($msgs)) {
                        $msgs =& $cache->get('pronto:i18n_language_'.$lang);
                }
                if(!is_array($msgs)) {
                        include($this->config_path.DS.$lang.DS.'messages.php');
                        if(strtolower($LANGUAGE_CODE) != $lang) {
                                trigger_error("i18n: Language requested does not match i18n messages file.");
                        }
                        $msgs = compact('MESSAGES', 'LANGUAGE_NAME', 'LANGUAGE_CODE');
                        unset($MESSAGES, $LANGUAGE_NAME, $LANGUAGE_CODE);

                        // scan module directories as well
                        foreach(explode(' ', MODULES) as $modname) {
                                $modpath = DIR_FS_APP.DS.'modules'.DS.$modname.DS.'config'.DS.'i18n';
                                if(file_exists($modpath.DS.$lang.DS.'messages.php')) {
                                        include($modpath.DS.$lang.DS.'messages.php');
                                        if(strtolower($LANGUAGE_CODE) != $lang) {
                                                trigger_error("i18n: Language requested does not match i18n messages file.");
                                        }
                                        $msgs['MESSAGES'] = array_merge($msgs['MESSAGES'], $MESSAGES);
                                        unset($MESSAGES, $LANGUAGE_NAME, $LANGUAGE_CODE);
                                }
                        }

                        Registry::set('pronto:i18n_language_'.$lang, $msgs);
                        $cache->set('pronto:i18n_language_'.$lang, $msgs);
                }

                $this->language_name = $msgs['LANGUAGE_NAME'];
                $this->messages      = $msgs['MESSAGES'];
                return $old;
        }

        function get_language()
        {
                return $this->language_code;
        }

        function get_language_name()
        {
                return $this->language_name;
        }

        function has_language($lang)
        {
                if(empty($lang)) return false;
                $lang = strtolower($lang);
                return file_exists($this->config_path.DS.$lang.DS.'messages.php');
        }

        // Automatically set language based on browser headers or session data
        function autoset_language($default='en')
        {
                $lang = $default;
                if(isset($_SESSION['LANGUAGE'])) {
                        $lang = $_SESSION['LANGUAGE'];
                } else if(isset($_SESSION['USER']['language'])) {
                        $lang = $_SESSION['USER']['language'];
                } else if(isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
                        $langs = explode(',', $_SERVER['HTTP_ACCEPT_LANGUAGE']);
                        foreach($langs as $l) {
                                $code = str_replace('-', '_', array_shift(explode(';', $l)));
                                $basecode = array_shift(explode('_', $code));
                                if($this->has_language($code)) {
                                        $lang = $code;
                                        break;
                                } else if($code != $basecode && $this->has_language($basecode)) {
                                        $lang = $basecode;
                                        break;
                                }
                        }
                }
                $this->set_language($lang);
        }

        function msg($msg)
        {
                $args = func_get_args();
                if(isset($this->messages[$msg])) {
                        $args[0] = $this->messages[$msg];
                } else {
                        $args[0] = $msg;
                }
                $str = call_user_func_array('sprintf', $args);
                return $str;
        }
}

function __($msg)
{
        $i18n =& Registry::get('pronto:i18n');
        $args = func_get_args();
        if(is_object($i18n)) {
                return call_user_func_array(array(&$i18n,'msg'), $args);
        }
        return call_user_func_array('sprintf', $args);
}

function _e($msg)
{
        $args = func_get_args();
        echo call_user_func_array('__', $args);
}

?>

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