protected static function get_lang_swap(FTL_Binding $tag, $swap)
{
// $swap = $tag->getAttribute('swap');
if (!is_null($swap)) {
$swap = explode(',', $swap);
$swap = array_map('trim', $swap);
// Try to get internal swap values
foreach ($swap as &$str) {
if (strpos($str, '::') !== FALSE) {
$seg = explode('::', $str);
// The asked key must be set
if (!empty($seg[1])) {
// Get from global value
if ($seg[0] == 'global') {
$str = self::$context->get_global($seg[1]);
} else {
$parent = NULL;
// Parent not set : current parent
if ($seg[0] == '') {
$parent = $tag->getDataParent();
} else {
$parent = $tag->getParent($seg[0]);
}
if (!is_null($parent)) {
$str = $parent->getValue($seg[1], $parent->name);
} else {
$str = '';
}
}
}
}
}
}
return $swap;
}