/**
* Renders the xsl object to a string. Global and local data are merged
* and extracted to create local variables within the xsl file.
*
* $output = $xsl->render();
*
* [!!] Global variables with the same key name as local variables will be
* overwritten by the local variable.
*
* @param string xsl filename
* @return string
* @throws Kohana_Exception
*/
public function render($file = NULL)
{
if ($file !== NULL) {
$this->set_filename($file);
}
if (empty($this->_file)) {
throw new Kohana_Exception('You must set the file to use within your xsl before rendering');
}
if (Xslt::$_global_data) {
// Import the global xsl variables to local namespace and maintain references
$this->_data = array_merge(Xslt::$_global_data, $this->_data);
}
// Create the XML DOM
$this->_dom = new DomDocument('1.0', 'UTF-8');
$this->_dom->preserveWhiteSpace = FALSE;
$this->_dom->formatOutput = TRUE;
// echo $this->array2xml( $this->_data );
$this->_dom->loadXML($this->array2xml($this->_data));
// Link the xml and xsl
$this->_dom->insertBefore($this->_dom->createProcessingInstruction('xml-stylesheet', 'type="text/xsl" href="' . $this->_file . '"'));
// Load the xsl
$xslt = new DOMDocument();
$doc = array("content" => Xslt::capture($this->_file), "pattern" => "/<!DOCTYPE (.*) PUBLIC \"(.*)\" \"(.*)\">/i", "match" => array(), "method" => "xml", "public" => "", "system" => "");
preg_match($doc["pattern"], $doc["content"], $match);
if (!empty($match)) {
$doc["content"] = preg_replace($doc["pattern"], "", $doc["content"]);
$doc["match"] = $match;
$doc["method"] = $doc["match"][1];
$doc["public"] = "doctype-public=\"" . $doc["match"][2] . "\"";
$doc["system"] = "doctype-system=\"" . $doc["match"][3] . "\"";
}
$doc["content"] = $this->get_includes($doc["content"]);
$xslt->loadXML("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n\t\t\t<xsl:stylesheet version=\"1.0\" xmlns:xsl=\"http://www.w3.org/1999/XSL/Transform\">\n\t\t\t<xsl:output\n\t\t\t\tmethod=\"xml\"\n\t\t\t\tencoding=\"" . Kohana::$charset . "\"\n\t\t\t\tomit-xml-declaration=\"no\"\n\t\t\t\t" . $doc["public"] . "\n\t\t\t\t" . $doc["system"] . "\n\t\t\t\tindent=\"no\"\n\t\t\t\t/>\n\n\t\t\t<xsl:template match=\"/root\">" . $doc["content"] . "</xsl:template></xsl:stylesheet>");
// Process XSLT
$proc = new xsltprocessor();
$proc->importStyleSheet($xslt);
// Return HTML
$return_html = $proc->transformToDoc($this->_dom)->saveXML();
$return_html = html_entity_decode($return_html);
return str_replace("<?xml version=\"1.0\" encoding=\"utf-8\"?>\n", "", $return_html);
}
