/**
* sort children of $node, identified by $child_id_attribute
* this is done because the simplexml iterator can't be swap-sorted
*
* @param simplexmlelement $to_node node to sort children of
* @param simplexmlelement $from_node children element name to sort
* @param boolean $copy_attributes should the attributes of from_node be copied to to_node
*
* @return void
*/
protected static function file_sort_children_node_merge(&$to_node, &$from_node, $copy_attributes = TRUE)
{
// merge 'from' attributes onto 'to' node
if ($copy_attributes) {
foreach ($from_node->attributes() as $attr_key => $attr_value) {
$to_node->addAttribute($attr_key, $attr_value);
}
}
foreach ($from_node->children() as $simplexml_child) {
$simplexml_temp = $to_node->addChild($simplexml_child->getName(), self::ampersand_magic($simplexml_child));
foreach ($simplexml_child->attributes() as $attr_key => $attr_value) {
$simplexml_temp->addAttribute($attr_key, $attr_value);
}
self::file_sort_children_node_merge($simplexml_temp, $simplexml_child, FALSE);
}
}
