/**
* Processes order constraints passed in an array.
*
* @param array $p_order
* @return array
*/
protected function ProcessOrder(array $p_order)
{
$order = array();
$state = 1;
foreach ($p_order as $word) {
switch ($state) {
case 1:
// reading the order field
if (array_search(strtolower($word), ArticlesList::$s_orderFields) === false) {
$checked_info = Article::CheckCustomOrder($word);
if (!$checked_info['status']) {
CampTemplate::singleton()->trigger_error("invalid order field {$word} in list_articles, order parameter");
}
// ordering by custom fields; runs the same way as other order specs
$orderField = $word;
$state = 2;
} else {
$orderField = $word;
$state = 2;
}
break;
case 2:
// reading the order direction
if (MetaOrder::IsValid($word)) {
$order[] = array('field' => $orderField, 'dir' => $word);
} else {
CampTemplate::singleton()->trigger_error("invalid order {$word} of attribute {$orderField} in list_articles, order parameter");
}
$state = 1;
break;
}
}
if ($state != 1) {
CampTemplate::singleton()->trigger_error("unexpected end of order parameter in list_articles");
}
return $order;
}
