* @link http://www.pradosoft.com/ * @copyright Copyright © 2005-2014 PradoSoft * @license http://www.pradosoft.com/license/ * @package Prado\Web\UI\WebControls */ namespace Prado\Web\UI\WebControls; /** * Using TTextHighlighter and MarkdownParser classes */ Prado::using('System.Web.UI.WebControls.TTextHighlighter'); Prado::using('System.3rdParty.Parsedown.Parsedown'); /** * 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 https://daringfireball.net/projects/markdown/basics for * details on the Markdown syntax usage. * * TMarkdown also performs syntax highlighting for code blocks whose language * is recognized by {@link TTextHighlighter}. * The language of a code block must be specified in the first line of the block * and enclosed within a pair of square brackets (e.g. [php]). * * @author Wei Zhuo * @package Prado\Web\UI\WebControls * @since 3.0.1 */ class TMarkdown extends TTextHighlighter { /** * Processes a text string. * This method is required by the parent class. * @param string text string to be processed * @return string the processed text result */ public function processText($text) { $result = Parsedown::instance()->parse($text); return preg_replace_callback( '/
((.|\n)*?)<\\/code><\\/pre>/im',
				array($this, 'highlightCode'), $result);
	}

	/**
	 * Highlights source code using TTextHighlighter
	 * @param array matches of code blocks
	 * @return string highlighted code.
	 */
	protected function highlightCode($matches)
	{
		$text = html_entity_decode($matches[2],ENT_QUOTES,'UTF-8');
		$this->setLanguage($matches[1]);
		return parent::processText($text);
	}
}