From 6f7fdef0f500cd4bb540affd3bc1482243f337c1 Mon Sep 17 00:00:00 2001
From: emkael <emkael@tlen.pl>
Date: Wed, 24 Feb 2016 23:18:07 +0100
Subject:  * Prado 3.3.0

---
 .../framework/Web/UI/WebControls/TMarkdown.php     | 72 ++++++++++++++++++++++
 1 file changed, 72 insertions(+)
 create mode 100644 lib/prado/framework/Web/UI/WebControls/TMarkdown.php

(limited to 'lib/prado/framework/Web/UI/WebControls/TMarkdown.php')

diff --git a/lib/prado/framework/Web/UI/WebControls/TMarkdown.php b/lib/prado/framework/Web/UI/WebControls/TMarkdown.php
new file mode 100644
index 0000000..7a99b1f
--- /dev/null
+++ b/lib/prado/framework/Web/UI/WebControls/TMarkdown.php
@@ -0,0 +1,72 @@
+<?php
+/**
+ * TMarkdown class file
+ *
+ * @author Wei Zhuo <weizhuo[at]gmail[dot]com>
+ * @link https://github.com/pradosoft/prado
+ * @copyright Copyright &copy; 2005-2015 The PRADO Group
+ * @license https://github.com/pradosoft/prado/blob/master/COPYRIGHT
+ * @package System.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 <weizhuo[at]gmail[dot]com>
+ * @package System.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(
+				'/<pre><code class="language-(\w+)">((.|\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);
+	}
+}
+
-- 
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