1 files changed, 113 insertions, 0 deletions
diff --git a/framework/Web/UI/WebControls/TMarkdown.php b/framework/Web/UI/WebControls/TMarkdown.php
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+++ b/framework/Web/UI/WebControls/TMarkdown.php
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+<?php
+/**
+ * TMarkdown class file
+ *
+ * @author Wei Zhuo <weizhuo[at]gmail[dot]com>
+ * @link http://www.pradosoft.com/
+ * @copyright Copyright &copy; 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);
+	}
+}
+
+?>
+\ No newline at end of file