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<?php
require_once 'Zend/Locale.php';
require_once 'Zend/Translate/Adapter.php';

/**
* @package framework
* @subpackage i18n
*/
class i18nSSLegacyAdapter extends Zend_Translate_Adapter implements i18nTranslateAdapterInterface {

/**
* Generates the adapter
*
* @param array|Zend_Config $options Translation content
*/
public function __construct($options = array()) {
$this->_options['keyDelimiter'] = ".";
parent::__construct($options);
}

protected function _loadTranslationData($data, $locale, array $options = array()) {
$options = array_merge($this->_options, $options);

if ($options['clear'] || !isset($this->_translate[$locale])) {
$this->_translate[$locale] = array();
}

if(is_array($data)) return array($locale => $data);

$this->_filename = $data;

// Ignore files with other extensions
if(pathinfo($this->_filename, PATHINFO_EXTENSION) != 'php') return;

if (!is_readable($this->_filename)) {
require_once 'Zend/Translate/Exception.php';
throw new Zend_Translate_Exception('Error opening translation file \'' . $this->_filename . '\'.');
}

global $lang;
if(!isset($lang['en_US'])) $lang['en_US'] = array();
// TODO Diff locale array to avoid re-parsing all previous translations whenever a new module is included.
require_once($this->_filename);

$flattened = array();
if($lang[$locale]) {
$iterator = new i18nSSLegacyAdapter_Iterator(new RecursiveArrayIterator($lang[$locale]));
foreach($iterator as $k => $v) {
$flattenedKey = implode($options['keyDelimiter'], array_filter($iterator->getKeyStack()));
$flattened[$flattenedKey] = (is_array($v)) ? $v[0] : $v;
}
}

return array($locale => $flattened);
}

public function toString() {
return "i18nSSLegacy";
}

public function getFilenameForLocale($locale) {
return "{$locale}.php";
}

}

/**
* @package framework
* @subpackage i18n
*/
class i18nSSLegacyAdapter_Iterator extends RecursiveIteratorIterator {

protected $keyStack = array();

public function callGetChildren() {
$this->keyStack[] = parent::key();
return parent::callGetChildren();
}

public function endChildren() {
array_pop($this->keyStack);
parent::endChildren();
}

public function key() {
return json_encode($this->getKeyStack());
}

public function getKeyStack() {
return array_merge($this->keyStack, array(parent::key()));
}
}
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