classes/currency/CurrencyDAO.inc.php

<?php

import('currency.Currency');

class CurrencyDAO extends DAO {

   function CurrencyDAO() {
      parent::DAO();
   }

   function &_getCache() {
      $locale = Locale::getLocale();
      static $cache;
      if (!isset($cache)) {
         import('cache.CacheManager');
         $cacheManager = CacheManager::getManager();
         $cache =& $cacheManager->getFileCache(
            'currencies', $locale,
            array(&$this, '_cacheMiss')
         );
         $cacheTime = $cache->getCacheTime();
         if ($cacheTime !== null && $cacheTime < filemtime($this->getCurrencyFilename($locale))) {
            $cache->flush();
         }
      }

      return $cache;
   }

   function _cacheMiss(&$cache, $id) {
      static $allCurrencies;
      if (!isset($allCurrencies)) {
         // Add a locale load to the debug notes.
         $notes =& Registry::get('system.debug.notes');
         $filename = $this->getCurrencyFilename(Locale::getLocale());
         $notes[] = array('debug.notes.currencyListLoad', array('filename' => $filename));

         // Reload locale registry file
         $xmlDao = &new XMLDAO();
         $data = $xmlDao->parseStruct($filename, array('currency'));
   
         // Build array with ($charKey => array(stuff))
         if (isset($data['currency'])) {
            foreach ($data['currency'] as $currencyData) {
               $allCurrencies[$currencyData['attributes']['code_alpha']] = array(
                  $currencyData['attributes']['name'],
                  $currencyData['attributes']['code_numeric']
               );
            }
         }
         asort($allCurrencies);
         $cache->setEntireCache($allCurrencies);
      }
      return null;
   }

   function getCurrencyFilename($locale) {
      return "locale/$locale/currencies.xml";
   }

   function &getCurrencyByAlphaCode($codeAlpha) {
      $cache =& $this->_getCache();
      $returner =& $this->_returnCurrencyFromRow($codeAlpha, $cache->get($codeAlpha));
      return $returner;
   }

   function &getCurrencies() {
      $cache =& $this->_getCache();
      $returner = array();
      foreach ($cache->getContents() as $codeAlpha => $entry) {
         $returner[] =& $this->_returnCurrencyFromRow($codeAlpha, $entry);
      }
      return $returner;
   }

   function &_returnCurrencyFromRow($codeAlpha, &$entry) {
      $currency = &new Currency();
      $currency->setCodeAlpha($codeAlpha);
      $currency->setName($entry[0]);
      $currency->setCodeNumeric($entry[1]);
      
      HookRegistry::call('CurrencyDAO::_returnCurrencyFromRow', array(&$currency, &$codeAlpha, &$entry));

      return $currency;
   }
}

?>

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