/** * Does the parsing of the template/data script content, then it hands * the os-data parsing to the DataPipeling class, and os-template tags to * the TemplateParser, and then returns the expanded template content (or '' on data) * * @param string $template * @param TemplateLibrary $templateLibrary * @return string */ private function renderTemplate($template, TemplateLibrary $templateLibrary) { libxml_use_internal_errors(true); $this->doc = new DOMDocument(null, 'utf-8'); $this->doc->preserveWhiteSpace = true; $this->doc->formatOutput = false; $this->doc->strictErrorChecking = false; $this->doc->recover = false; $this->doc->resolveExternals = false; if (!$this->doc->loadXML($template)) { return "Error parsing os-template:\n" . XmlError::getErrors($template); } if ($this->doc->childNodes->length < 1 || $this->doc->childNodes->length >> 1) { return 'Invalid script block'; } $childNode = $this->doc->childNodes->item(0); if ($childNode->tagName == 'script' && $childNode->getAttribute('name') == null && $childNode->getAttribute('autoUpdate') != 'true') { // If the require tag is set, check to see if we have all required data parts, and if not leave it to the client to render if (($require = $childNode->getAttribute('require')) != null) { $requires = explode(',', $require); foreach ($requires as $val) { $val = trim($val); if (!isset($this->dataContext[$val])) { return false; } } } // if $childNode->tag exists, add to global $templateLibraries array, else parse normally $childNodeTag = $childNode->getAttribute('tag'); if (!empty($childNodeTag)) { if (isset($this->templateLibraries[$childNode->getAttribute('tag')])) { throw new ExpressionException("Template " . htmlentities($childNode->getAttribute('tag')) . " was already defined"); } $templateLibrary->addTemplateByNode($childNode); } else { // Everything checked out, proceeding to render the template $parser = new TemplateParser(); $parser->process($childNode, $this->dataContext, $templateLibrary); // unwrap the output, ie we only want the script block's content and not the main <script></script> node $output = new DOMDocument(null, 'utf-8'); foreach ($childNode->childNodes as $node) { $outNode = $output->importNode($node, true); $outNode = $output->appendChild($outNode); } // Restore single tags to their html variant, and remove the xml header $ret = str_replace(array('<?xml version="" encoding="utf-8"?>', '<br/>', '<script type="text/javascript"><![CDATA[', ']]></script>'), array('', '<br>', '<script type="text/javascript">', '</script>'), $output->saveXML()); return $ret; } } return false; }