/**
* Generates canonical representation of an XML document.
*
* <blockquote> Root Node- The root node is the parent of the
* top-level document element. The result of processing each of
* its child nodes that is in the node-set in document order. The
* root node does not generate a byte order mark, XML declaration,
* nor anything from within the document type declaration.
* </blockquote>
*
* Note: in addition to the root XML element, XML document can
* contain other nodes included in the canonical output on the top
* level (e.g. processing instructions and comments)
*
* @link http://www.w3.org/TR/xml-c14n#ProcessingModel Canonical
* XML Processing Model
*
* @param DOMDocument $node document being canonicalized
*
* @return string canonicalized string representation
*/
public function canonicalize($node)
{
$nodeStrings = array();
foreach ($node->childNodes as $node) {
$strategy = new Sisyphus_C14n_Legacy_Strategy_Dispatcher($this->getContext(), $this->getNodeset());
$nodeStrings[] = $strategy->canonicalize($node);
}
return join(self::LINEFEED, array_filter($nodeStrings));
}
/**
* Generates canonical string presentation of an XML Element
*
* @see Sisyphus_C14n_Legacy_Strategy_Element::canonicalize()
* the description of the canonicalization algorithm
*
* @param DOMElement $node DOM element being canonicalized
*
* @return string canonical presentation
*/
public function canonicalize($node)
{
$namespaceString = $this->generateNamespaceString($node);
$attributeString = $this->generateAttributeString($node);
$strategy = new Sisyphus_C14n_Legacy_Strategy_Dispatcher($this->getContext(), $this->getNodeset());
$nestedString = '';
foreach ($node->childNodes as $child) {
$nestedString .= $strategy->canonicalize($child);
}
return $this->generateOutputString($node->nodeName, $namespaceString, $attributeString, $nestedString);
}
/**
* Canonicalizes XML node.
*
* @see Sisyphus_C14n_C14nInterface::canonicalize()
* Sisyphus_C14n_C14nInterface::canonicalize()
*
* @param DOMNode $xml DOM node to canonicalize
*
* @return string canonicalized XML as string
*/
public function canonicalize(DOMNode $xml)
{
$this->setNodeset(new Sisyphus_C14n_Legacy_Nodeset($xml instanceof DOMDocument ? $xml : $xml->ownerDocument, $xml, $this->getContext()));
$strategy = new Sisyphus_C14n_Legacy_Strategy_Dispatcher($this->getContext(), $this->getNodeset());
return $strategy->canonicalize($this->getNodeset()->getApex());
}
