From 4d70e3282990a6c8f7216c92b9eb2f8b4f1828cd Mon Sep 17 00:00:00 2001
From: Hypolite Petovan <hypolite@mrpetovan.com>
Date: Sat, 9 Mar 2019 23:28:50 -0500
Subject: [PATCH] Add new Content\Text\MarkdownParser

- Add autolinker to MarkdownParser->doAutoLinks()
- Set hashtag_protection and url_filter_func properties of MarkdownParser
---
 src/Content/Text/Markdown.php       | 16 +++++++++++-----
 src/Content/Text/MarkdownParser.php | 18 ++++++++++++++++++
 2 files changed, 29 insertions(+), 5 deletions(-)
 create mode 100644 src/Content/Text/MarkdownParser.php

diff --git a/src/Content/Text/Markdown.php b/src/Content/Text/Markdown.php
index e3e2cd3ac9..a715de7e97 100644
--- a/src/Content/Text/Markdown.php
+++ b/src/Content/Text/Markdown.php
@@ -9,7 +9,6 @@ namespace Friendica\Content\Text;
 use Friendica\BaseObject;
 use Friendica\Core\System;
 use Friendica\Model\Contact;
-use Michelf\MarkdownExtra;
 
 /**
  * Friendica-specific usage of Markdown
@@ -31,11 +30,18 @@ class Markdown extends BaseObject
 	public static function convert($text, $hardwrap = true) {
 		$stamp1 = microtime(true);
 
-		$MarkdownParser = new MarkdownExtra();
-		$MarkdownParser->hard_wrap = $hardwrap;
-		$MarkdownParser->code_class_prefix = 'language-';
+		$MarkdownParser = new MarkdownParser();
+		$MarkdownParser->code_class_prefix  = 'language-';
+		$MarkdownParser->hard_wrap          = $hardwrap;
+		$MarkdownParser->hashtag_protection = true;
+		$MarkdownParser->url_filter_func    = function ($url) {
+			if (strpos($url, '#') === 0) {
+				$url = ltrim($_SERVER['REQUEST_URI'], '/') . $url;
+			}
+			return  $url;
+		};
+
 		$html = $MarkdownParser->transform($text);
-		$html = preg_replace('/<a(.*?)href="#/is', '<a$1href="' . ltrim($_SERVER['REQUEST_URI'], '/') . '#', $html);
 
 		self::getApp()->getProfiler()->saveTimestamp($stamp1, "parser", System::callstack());
 
diff --git a/src/Content/Text/MarkdownParser.php b/src/Content/Text/MarkdownParser.php
new file mode 100644
index 0000000000..fa1d166ec3
--- /dev/null
+++ b/src/Content/Text/MarkdownParser.php
@@ -0,0 +1,18 @@
+<?php
+namespace Friendica\Content\Text;
+
+use Friendica\Util\Strings;
+use Michelf\MarkdownExtra;
+
+class MarkdownParser extends MarkdownExtra
+{
+	protected function doAutoLinks($text)
+	{
+		$text = parent::doAutoLinks($text);
+
+		$text = preg_replace_callback(Strings::autoLinkRegEx(),
+			array($this, '_doAutoLinks_url_callback'), $text);
+
+		return $text;
+	}
+}
\ No newline at end of file