Экспорт в YML списка объектов каталога

<?php
 
class YMLCustomExporter extends umiExporter {
public function setOutputBuffer() {
$buffer = outputBuffer::current('HTTPOutputBuffer');
$buffer->charset("windows-1251");
$buffer->contentType("text/xml");
return $buffer;
}
 
public function export($branches) {
if (!count($branches)) {
$sel = new selector('pages');
$sel->where('hierarchy')->page(0)->childs(1);
$branches = $sel->result;
}
 
$source_name = $this->getSourceName();
$exporter = new xmlExporter($source_name);
$parents = array();
foreach($branches as $item){
$parent = $item->getParentId();
if(!in_array($parent, $parents)) $parents[] = $parent;
}
$branches = array_merge($branches, $parents);
$exporter->addElements($branches);
$result = $exporter->execute();
$umiDump = $result->saveXML();
 
$style_file = './xsl/export/' . $this->type . '.xsl';
if (!is_file($style_file)) {
throw new publicException("Can't load exporter {$style_file}");
}
 
$doc = new DOMDocument("1.0", "utf-8");
$doc->formatOutput = XML_FORMAT_OUTPUT;
$doc->loadXML($umiDump);
 
$templater = xslTemplater::getInstance();
$templater->setIsInited(false);
$templater->init($style_file);
$templater->setXmlDocument($doc);
 
$result = $templater->parseResult();
// convert to CP1251
$result = iconv("UTF-8", "CP1251", $result);
$doc = new DOMDocument("1.0", "windows-1251");
$result = str_replace('<' . '?xml version="1.0" encoding="utf-8"?>', '<' . '?xml version="1.0" encoding="windows-1251"?>', $result);
 
return $result;
}
 
}
?>