public function generate()
{
$result = XSLProc::transform($this->xml, $this->xsl, XSLProc::XML, $this->parameters, $this->registered_php_functions);
if (XSLProc::hasErrors()) {
return false;
}
return $result;
}
public function save(MessageStack $errors)
{
$xsl_errors = new MessageStack();
if (strlen(trim($this->parameters()->xml)) == 0) {
$errors->append('xml', __('This is a required field'));
} elseif (!General::validateXML($this->parameters()->xml, $xsl_errors)) {
if (XSLProc::hasErrors()) {
$errors->append('xml', sprintf('XSLT specified is invalid. The following error was returned: "%s near line %s"', $xsl_errors->current()->message, $xsl_errors->current()->line));
} else {
$errors->append('xml', 'XSLT specified is invalid.');
}
}
return parent::save($errors);
}
public static function validateXML($string, &$errors, $encoding = 'UTF-8')
{
$xsl = '<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template match="/"></xsl:template>
</xsl:stylesheet>';
$xml = trim($string);
if (strpos($string, '<?xml') === false) {
$xml = sprintf('<?xml version="1.0" encoding="%s"?><rootelement>%s</rootelement>', $encoding, $string);
}
XSLProc::transform($xml, $xsl);
if (XSLProc::hasErrors()) {
$errors = XSLProc::getErrors();
return false;
}
return true;
}
public function render(Register $Parameters, XMLDocument &$Document = NULL, DocumentHeaders &$Headers = NULL)
{
$ParameterOutput = new Register();
if (!is_null($Headers)) {
$Headers->append('Content-Type', $this->{'content-type'});
} else {
header('Content-Type: ' . $this->{'content-type'});
}
if (is_null($Document)) {
$Document = new XMLDocument();
$Document->appendChild($Document->createElement('data'));
}
$root = $Document->documentElement;
$datasources = $events = array();
$events_wrapper = $Document->createElement('events');
$root->appendChild($events_wrapper);
if (is_array($this->about()->{'events'}) && !empty($this->about()->{'events'})) {
$events = $this->about()->{'events'};
}
if (is_array($this->about()->{'data-sources'}) && !empty($this->about()->{'data-sources'})) {
$datasources = $this->about()->{'data-sources'};
}
####
# Delegate: FrontendEventsAppend
# Description: Append additional Events.
# Global: Yes
Extension::notify('FrontendEventsAppend', '/frontend/', array('events' => &$events));
if (!empty($events)) {
$postdata = General::getPostData();
$events_ordered = array();
foreach ($events as $handle) {
$events_ordered[] = Event::loadFromHandle($handle);
}
uasort($events_ordered, array($this, '__cbSortEventsByPriority'));
foreach ($events_ordered as $e) {
if (!$e->canTrigger($postdata)) {
continue;
}
$fragment = $e->trigger($ParameterOutput, $postdata);
if ($fragment instanceof DOMDocument && !is_null($fragment->documentElement)) {
$node = $Document->importNode($fragment->documentElement, true);
$events_wrapper->appendChild($node);
}
}
}
####
# Delegate: FrontendDataSourceAppend
# Description: Append additional DataSources.
# Global: Yes
Extension::notify('FrontendDataSourcesAppend', '/frontend/', array('datasources' => &$datasources));
// Find dependancies and order accordingly
$datasource_pool = array();
$dependency_list = array();
$datasources_ordered = array();
$all_dependencies = array();
foreach ($datasources as $handle) {
$datasource_pool[$handle] = Datasource::loadFromHandle($handle);
$dependency_list[$handle] = $datasource_pool[$handle]->parameters()->dependencies;
}
$datasources_ordered = $this->__sortByDependencies($dependency_list);
if (!empty($datasources_ordered)) {
foreach ($datasources_ordered as $handle) {
$ds = $datasource_pool[$handle];
try {
$fragment = $ds->render($ParameterOutput);
} catch (FrontendPageNotFoundException $e) {
FrontendPageNotFoundExceptionHandler::render($e);
}
if ($fragment instanceof DOMDocument && !is_null($fragment->documentElement)) {
$node = $Document->importNode($fragment->documentElement, true);
$root->appendChild($node);
}
}
}
if ($ParameterOutput->length() > 0) {
foreach ($ParameterOutput as $p) {
$Parameters->{$p->key} = $p->value;
}
}
####
# Delegate: FrontendParamsPostResolve
# Description: Access to the resolved param pool, including additional parameters provided by Data Source outputs
# Global: Yes
Extension::notify('FrontendParamsPostResolve', '/frontend/', array('params' => $Parameters));
$element = $Document->createElement('parameters');
$root->appendChild($element);
foreach ($Parameters as $key => $parameter) {
if (is_array($parameter->value) && count($parameter->value) > 1) {
$p = $Document->createElement($key);
$p->setAttribute('value', (string) $parameter);
foreach ($parameter->value as $v) {
$p->appendChild($Document->createElement('item', (string) $v));
}
$element->appendChild($p);
} else {
$element->appendChild($Document->createElement($key, (string) $parameter));
}
}
$template = $this->template;
####
# Delegate: FrontendTemplatePreRender
# Description: Access to the template source, before it is rendered.
# Global: Yes
Extension::notify('FrontendTemplatePreRender', '/frontend/', array('document' => $Document, 'template' => &$template));
$this->template = $template;
// When the XSLT executes, it uses the CWD as set here
$cwd = getcwd();
chdir(WORKSPACE);
$output = XSLProc::transform($Document, $this->template, XSLProc::XML, $Parameters->toArray(), array());
chdir($cwd);
if (XSLProc::hasErrors()) {
throw new XSLProcException('Transformation Failed');
}
/*
header('Content-Type: text/plain; charset=utf-8');
$Document->formatOutput = true;
print $Document->saveXML();
die();
*/
return $output;
}
public static function transform($xml, $xsl, $output = self::XML, array $parameters = array(), array $register_functions = array())
{
self::flush();
self::$lastXML = $xml;
self::$lastXSL = $xsl;
$result = null;
libxml_use_internal_errors(true);
if ($xml instanceof DOMDocument) {
$XMLDoc = $xml;
} else {
$XMLDoc = new DOMDocument();
$XMLDoc->loadXML($xml);
}
self::processLibXMLerrors(self::ERROR_XML);
if ($xsl instanceof DOMDocument) {
$XSLDoc = $xsl;
} else {
$XSLDoc = new DOMDocument();
$XSLDoc->loadXML($xsl);
}
if (!self::hasErrors() && $XSLDoc instanceof DOMDocument && $XMLDoc instanceof DOMDocument) {
$XSLProc = new XSLTProcessor();
if (!empty($register_functions)) {
$XSLProc->registerPHPFunctions($register_functions);
}
$XSLProc->importStyleSheet($XSLDoc);
if (is_array($parameters) && !empty($parameters)) {
$XSLProc->setParameter('', $parameters);
}
self::processLibXMLerrors(self::ERROR_XSL);
if (!self::hasErrors()) {
$result = $XSLProc->{'transformTo' . ($output == self::XML ? 'XML' : 'Doc')}($XMLDoc);
self::processLibXMLerrors(self::ERROR_XML);
}
}
return $result;
}
protected static function __transform(DOMDocument $xml, $template = 'exception.generic.xsl')
{
$path = TEMPLATES . '/' . $template;
if (file_exists(MANIFEST . '/templates/' . $template)) {
$path = MANIFEST . '/templates/' . $template;
}
return XSLProc::transform($xml, file_get_contents($path), XSLProc::XML, array('root' => URL));
}
/**
* Performs an XSLT transformation on a SymphonyView's $document using its
* $stylesheet.
*
* @param string $directory
* Base directory to perform the transformation in
*
* @return string containing result of transformation
*/
public function transform($directory = null)
{
// Set directory for performing the transformation
// This is for XSLT import/include I believe.
// Defaults to root views dir (/workspace/views/ or
// /symphony/content/). Can be overridden if called
// with $directory param.
if (is_null($directory)) {
$dir = $this->location;
} else {
$dir = $directory;
}
// Get current directory
$cwd = getcwd();
// Move to tranformation directory
chdir($dir);
// Perform transformation
$output = XSLProc::transform($this->document->saveXML(), $this->stylesheet->saveXML(), XSLProc::XML, array(), array());
// Move back to original directory
chdir($cwd);
if (XSLProc::hasErrors() && !isset($_REQUEST['debug'])) {
throw new XSLProcException('Transformation Failed');
}
// HACK: Simple debug output:
if (isset($_REQUEST['debug'])) {
$this->document->formatOutput = true;
echo '<pre>', htmlentities($this->document->saveXML());
exit;
}
// Return result of transformation
return $output;
}
