/**
* Extends one node
*
* @param Varien_Simplexml_Element $source
* @param boolean $overwrite
* @return Varien_Simplexml_Element
*/
public function extendChild($source, $overwrite = false)
{
// this will be our new target node
$targetChild = null;
// name of the source node
$sourceName = $source->getName();
// here we have children of our source node
$sourceChildren = $source->children();
if (!$source->hasChildren()) {
// handle string node
if (isset($this->{$sourceName})) {
// if target already has children return without regard
if ($this->{$sourceName}->hasChildren()) {
return $this;
}
if ($overwrite) {
unset($this->{$sourceName});
} else {
return $this;
}
}
$targetChild = $this->addChild($sourceName, $source->xmlentities());
$targetChild->setParent($this);
foreach ($source->attributes() as $key => $value) {
$targetChild->addAttribute($key, $this->xmlentities($value));
}
return $this;
}
if (isset($this->{$sourceName})) {
$targetChild = $this->{$sourceName};
}
if (is_null($targetChild)) {
// if child target is not found create new and descend
$targetChild = $this->addChild($sourceName);
$targetChild->setParent($this);
foreach ($source->attributes() as $key => $value) {
$targetChild->addAttribute($key, $this->xmlentities($value));
}
}
// finally add our source node children to resulting new target node
foreach ($sourceChildren as $childKey => $childNode) {
$targetChild->extendChild($childNode, $overwrite);
}
return $this;
}
/**
* Convert object attributes to XML
*
* @param array $arrAttributes array of required attributes
* @param string $rootName name of the root element
* @return string
*/
protected function __toXml(array $arrAttributes = array(), $rootName = 'item', $addOpenTag = false, $addCdata = true)
{
$xml = '';
if ($addOpenTag) {
$xml .= '<?xml version="1.0" encoding="UTF-8"?>' . "\n";
}
if (!empty($rootName)) {
$xml .= '<' . $rootName . '>' . "\n";
}
$xmlModel = new Varien_Simplexml_Element('<node></node>');
$arrData = $this->toArray($arrAttributes);
foreach ($arrData as $fieldName => $fieldValue) {
if ($addCdata === true) {
$fieldValue = "<![CDATA[{$fieldValue}]]>";
} else {
$fieldValue = $xmlModel->xmlentities($fieldValue);
}
$xml .= "<{$fieldName}>{$fieldValue}</{$fieldName}>" . "\n";
}
if (!empty($rootName)) {
$xml .= '</' . $rootName . '>' . "\n";
}
return $xml;
}
