LanguageDAO.inc.php

<?php
 
import('lib.pkp.classes.language.Language');
 
class LanguageDAO extends DAO {
   public function __construct() {
      // Parent constructor intentionally not called
   }
 
   public function getLanguageByCode($code) {
      $isoCodes = new \Sokil\IsoCodes\IsoCodesFactory();
      $languages = $isoCodes->getLanguages(\Sokil\IsoCodes\IsoCodesFactory::OPTIMISATION_MEMORY);
      $language = $languages->getByAlpha2($code);
      return $language?$this->_fromIsoCodeFactoryObject($language):null;
   }
 
   public function getLanguages() {
      $isoCodes = new \Sokil\IsoCodes\IsoCodesFactory(\Sokil\IsoCodes\IsoCodesFactory::OPTIMISATION_IO);
      return array_values(array_map(function($language) {
         return $this->_fromIsoCodeFactoryObject($language);
      }, array_filter(iterator_to_array($isoCodes->getLanguages()), function($language) {
         return $language->getAlpha2() && $language->getType() == 'L' && $language->getScope() == 'I';
      })));
   }
 
   public function getLanguageNames() {
      return array_map(function($language) {
         return $language->getName();
      }, $this->getLanguages());
   }
 
   protected function _fromIsoCodeFactoryObject($language) {
      $languageDataObject = new Language();
      $languageDataObject->setCode($language->getAlpha2());
      $languageDataObject->setName($language->getLocalName());
      return $languageDataObject;
   }
}