<?php /** * TMarkdown class file * * @author Wei Zhuo <weizhuo[at]gmail[dot]com> * @link http://www.pradosoft.com/ * @copyright Copyright © 2005 PradoSoft * @license http://www.pradosoft.com/license/ * @version $Revision: $ $Date: $ * @package System.Web.UI.WebControls */ /** * TMarkdown class * * TMarkdown is a control that produces HTML from code with markdown syntax. * * Markdown is a text-to-HTML conversion tool for web writers. Markdown allows * you to write using an easy-to-read, easy-to-write plain text format, then * convert it to structurally valid XHTML (or HTML). * Further documentation regarding Markdown can be found at * http://daringfireball.net/projects/markdown/ * * To use TMarkdown, simply enclose the content to be rendered within * the body of TMarkdown in a template. * * See http://www.pradosoft.com/demos/quickstart/?page=Markdown for * details on the Markdown syntax usage. * * @author Wei Zhuo <weizhuo[at]gmail[dot]com> * @version $Revision: $ $Date: $ * @package System.Web.UI.WebControls * @since 3.0 */ class TMarkdown extends TControl { /** * @var TTextHighlighter */ private $_highlighter; /** * Renders body content. * This method overrides parent implementation by removing * malicious javascript code from the body content * @param THtmlWriter writer */ public function render($writer) { $textWriter=new TTextWriter; parent::render(new THtmlWriter($textWriter)); $writer->write($this->renderMarkdown($textWriter->flush())); } /** * Use MarkdownParser to render the HTML content. * @param string markdown content * @return string HTML content */ protected function renderMarkdown($text) { $renderer = Prado::createComponent('System.3rdParty.Markdown.MarkdownParser'); $result = $renderer->parse($text); return preg_replace_callback( '/<pre><code>\[\s*(\w+)\s*\]\n+((.|\n)*?)\s*<\\/code><\\/pre>/im', array($this, 'highlightCode'), $result); } /** * @return TTextHighlighter source code highlighter */ public function getTextHighlighter() { if(is_null($this->_highlighter)) $this->_highlighter = new TTextHighlighter; return $this->_highlighter; } /** * Highlights source code using TTextHighlighter * @param array matches of code blocks * @return string highlighted code. */ protected function highlightCode($matches) { $text = new TTextWriter; $writer = new THtmlWriter($text); $hi = $this->getTextHighlighter(); if($hi->getControls()->getCount() > 0) $hi->getControls()->removeAt(0); $hi->addParsedObject(html_entity_decode($matches[2])); $hi->setLanguage($matches[1]); $hi->render($writer); return $text->flush(); } /** * Registers css style for the highlighted result. * This method overrides parent implementation. * @param THtmlWriter writer */ public function onPreRender($writer) { parent::onPreRender($writer); $hi = $this->getTextHighlighter(); $this->getControls()->insertAt(0,$hi); $hi->onPreRender($writer); $this->getControls()->removeAt(0); } } ?>