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<?php
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/**
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* Translate.php
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*
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* @category Core
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* @package Core_Translation
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* @author Werner v.d.Decken <wkl@isteam.de>
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* @copyright Werner v.d.Decken <wkl@isteam.de>
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* @license http://www.gnu.org/licenses/gpl.html GPL License
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* @version 0.0.1
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* @revision $Revision: 1864 $
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* @link $HeadURL: svn://isteam.dynxs.de/wb-archiv/branches/2.8.x/wb/framework/Translate.php $
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* @lastmodified $Date: 2013-02-19 12:40:12 +0100 (Tue, 19 Feb 2013) $
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* @since File available since 12.01.2013
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* @description
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*/
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class Translate {
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// @object hold the Singleton instance
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private static $_oInstance = null;
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protected $sAdaptor = 'WbOldStyle';
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protected $sSystemLanguage = 'en';
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protected $sDefaultLanguage = 'en';
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protected $sUserLanguage = 'en';
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protected $bUseCache = true;
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/** TranslationTable objects of all loaded addons */
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protected $aLoadedAddons = array();
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/** TranslationTable object of the core and additional one activated addon */
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protected $aActiveTranslations = array();
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const CACHE_ENABLED = true;
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const CACHE_DISABLED = false;
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/** prevent class from public instancing and get an object to hold extensions */
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protected function __construct() {}
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/** prevent from cloning existing instance */
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private function __clone() {}
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/**
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* get a valid instance of this class
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* @return object
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*/
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static public function getInstance() {
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if( is_null(self::$_oInstance) ) {
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$c = __CLASS__;
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self::$_oInstance = new $c;
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}
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return self::$_oInstance;
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}
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/**
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* Initialize the Translations
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* @param string DefaultLanguage code ('de' || 'de_CH' || 'de_CH_uri')
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* @param string UserLanguage code ('de' || 'de_CH' || 'de_CH_uri')
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* @throws TranslationException
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*/
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public function initialize($sSystemLanguage, $sDefaultLanguage, $sUserLanguage = '',
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$sAdaptor = 'WbOldStyle', $bUseCache = self::CACHE_ENABLED)
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{
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if(!class_exists('TranslateAdaptor'.$sAdaptor)) {
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throw new TranslationException('unable to load adaptor: '.$sAdaptor);
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}
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$this->bUseCache = $bUseCache;
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$this->sAdaptor = 'TranslateAdaptor'.$sAdaptor;
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// if no system language is set then use language 'en'
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$this->sSystemLanguage = (trim($sSystemLanguage) == '' ? 'en' : $sSystemLanguage);
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// if no default language is set then use system language
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$this->sDefaultLanguage = (trim($sDefaultLanguage) == ''
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? $this->sSystemLanguage
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: $sDefaultLanguage);
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// if no user language is set then use default language
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$this->sUserLanguage = (trim($sUserLanguage) == ''
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? $this->sDefaultLanguage
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: $sUserLanguage);
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$sPattern = '/^[a-z]{2,3}(?:(?:\_[a-z]{2})?(?:\_[a-z0-9]{2,4})?)$/siU';
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// validate language codes
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if(preg_match($sPattern, $this->sSystemLanguage) &&
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preg_match($sPattern, $this->sDefaultLanguage) &&
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preg_match($sPattern, $this->sUserLanguage))
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{
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// load core translations and activate it
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$oTmp = new TranslationTable('',
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$this->sSystemLanguage,
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$this->sDefaultLanguage,
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$this->sUserLanguage,
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$this->bUseCache);
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$this->aLoadedAddons['core'] = $oTmp->load($this->sAdaptor);
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$this->aActiveTranslations[0] = $this->aLoadedAddons['core'];
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if(sizeof($this->aLoadedAddons['core']) == 0) {
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// throw an exception for missing translations
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throw new TranslationException('missing core translations');
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}
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}else {
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// throw an exception for invalid or missing language codes
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$sMsg = 'Invalid language codes: ['.$this->sSystemLanguage.'] or ['
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. $this->sDefaultLanguage.'] or ['.$this->sUserLanguage.']';
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throw new TranslationException($sMsg);
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}
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}
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/**
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* Add new addon
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* @param string Addon descriptor (i.e. 'modules\myAddon')
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* @return bool
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*/
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public function addAddon($sAddon)
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{
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if(!(strtolower($sAddon) == 'core' || $sAddon == '' || isset($this->aLoadedAddons[$sAddon]))) {
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// load requested addon translations if needed and possible
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$oTmp = new TranslationTable($sAddon,
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$this->sSystemLanguage,
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$this->sDefaultLanguage,
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$this->sUserLanguage,
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$this->bUseCache);
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$this->aLoadedAddons[$sAddon] = $oTmp->load($this->sAdaptor);
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}
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}
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/**
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* Activate Addon
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* @param string Addon descriptor (i.e. 'modules\myAddon')
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*/
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public function enableAddon($sAddon)
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{
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if(!(strtolower($sAddon) == 'core' || $sAddon == '')) {
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if(!isset($this->aLoadedAddons[$sAddon])) {
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$this->addAddon($sAddon);
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}
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$this->aActiveTranslations[1] = $this->aLoadedAddons[$sAddon];
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}
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}
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/**
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* Dissable active addon
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*/
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public function disableAddon()
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{
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if(isset($this->aActiveTranslations[1])) {
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unset($this->aActiveTranslations[1]);
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}
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}
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/**
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* Is key available
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* @param string Language key
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* @return bool
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*/
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public function __isset($sKey)
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{
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foreach($this->aActiveTranslations as $oAddon) {
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if(isset($oAddon->$sKey)) {
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// is true if at least one translation is found
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return true;
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}
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}
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return false;
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}
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/**
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* Get translation text
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* @param string Language key
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* @return string Translation text
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*/
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public function __get($sKey)
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{
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$sRetval = '';
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foreach($this->aActiveTranslations as $oAddon) {
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if(isset($oAddon->$sKey)) {
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// search the last matching translation (Core -> Addon)
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$sRetval = $oAddon->$sKey;
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}
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}
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return $sRetval;
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}
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/**
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* Return complete table of translations
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* @return array
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* @deprecated for backward compatibility only. Will be removed shortly
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*/
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public function getLangArray()
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{
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$aSumTranslations = array();
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foreach($this->aActiveTranslations as $oTranslationTable) {
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if(get_class($oTranslationTable) == 'TranslationTable') {
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$aSumTranslations = array_merge($aSumTranslations, $oTranslationTable->getArray());
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}
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}
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return $aSumTranslations;
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}
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} // end of class Translate
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// //////////////////////////////////////////////////////////////////////////////////// //
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/**
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* TranslationException
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*
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* @category Core
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* @package Core_Translation
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* @author Werner v.d.Decken <wkl@isteam.de>
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* @copyright Werner v.d.Decken <wkl@isteam.de>
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* @license http://www.gnu.org/licenses/gpl.html GPL License
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* @version 2.9.0
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* @revision $Revision: 1864 $
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* @lastmodified $Date: 2013-02-19 12:40:12 +0100 (Tue, 19 Feb 2013) $
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* @description Exceptionhandler for the Translation class and depending classes
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*/
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class TranslationException extends AppException {}
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