From 1a73d34c10643d0b997836641afe1393dae666b8 Mon Sep 17 00:00:00 2001
From: Jean-Philippe Gaudreau <jp.gaudreau@umontreal.ca>
Date: Wed, 22 Aug 2012 10:09:11 -0400
Subject: [PATCH] MDL-34997 - Allow shortened url youtu.be and y2u.be for
 Youtube filter

---
 filter/mediaplugin/filter.php                     | 15 +++++++++++++++
 .../simpletest/testfiltermediaplugin.php          |  3 +++
 2 files changed, 18 insertions(+)

diff --git a/filter/mediaplugin/filter.php b/filter/mediaplugin/filter.php
index cb4a75166de..edc0cfca6dc 100644
--- a/filter/mediaplugin/filter.php
+++ b/filter/mediaplugin/filter.php
@@ -90,6 +90,9 @@ class filter_mediaplugin extends moodle_text_filter {
             $search = '/<a\s[^>]*href="(https?:\/\/www\.youtube(-nocookie)?\.com)\/v\/([a-z0-9\-_]+)[^"#]*(#d=([\d]{1,4})x([\d]{1,4}))?[^>]*>([^>]*)<\/a>/is';
             $newtext = preg_replace_callback($search, 'filter_mediaplugin_youtube_callback', $newtext);
 
+            $search = '/<a\s[^>]*href="(https?:\/\/(www\.)?(youtu|y2u)\.be)\/([a-z0-9\-_]+)"[^>]*>([^>]*)<\/a>/is';
+            $newtext = preg_replace_callback($search, 'filter_mediaplugin_shortened_youtube_callback', $newtext);
+
             $search = '/<a\s[^>]*href="(https?:\/\/www\.youtube(-nocookie)?\.com)\/view_play_list\?p=([a-z0-9\-_]+)[^"#]*(#d=([\d]{1,4})x([\d]{1,4}))?[^>]*>([^>]*)<\/a>/is';
             $newtext = preg_replace_callback($search, 'filter_mediaplugin_youtube_playlist_callback', $newtext);
 
@@ -758,6 +761,18 @@ OET;
     return $output;
 }
 
+/**
+ * Change shortened links to YouTube into embedded YouTube videos
+ *
+ * @param  $link
+ * @return string
+ */
+function filter_mediaplugin_shortened_youtube_callback($link) {
+    $newlink = array($link[0], 'https://www.youtube.com','',$link[4],'','','',$link[5]);
+    return filter_mediaplugin_youtube_callback($newlink);
+}
+
+
 /**
  * Change links to Vimeo into embedded Vimeo videos
  *
diff --git a/filter/mediaplugin/simpletest/testfiltermediaplugin.php b/filter/mediaplugin/simpletest/testfiltermediaplugin.php
index e74bb2a482d..bd8c748d737 100644
--- a/filter/mediaplugin/simpletest/testfiltermediaplugin.php
+++ b/filter/mediaplugin/simpletest/testfiltermediaplugin.php
@@ -58,7 +58,10 @@ class filter_mediaplugin_test extends UnitTestCase {
                         '<a id="movie player" class="center" href="http://moodle.org/testfile/test.mpg">test mpg</a>',
                         '<a href="http://moodle.org/testfile/test.ram">test</a>',
                         '<a href="http://www.youtube.com/watch?v=JghQgA2HMX8" class="href=css">test file</a>',
+                        '<a href="http://www.youtube-nocookie.com/watch?v=JghQgA2HMX8" class="href=css">test file</a>',
                         '<a class="youtube" href="http://www.youtube.com/watch?v=JghQgA2HMX8">test file</a>',
+                        '<a href="http://youtu.be/JghQgA2HMX8" class="href=css">test file</a>',
+                        '<a href="http://y2u.be/JghQgA2HMX8" class="href=css">test file</a>',
                         '<a class="_blanktarget" href="http://moodle.org/testfile/test.flv?d=100x100">test flv</a>',
                         '<a class="hrefcss" href="http://www.youtube.com/watch?v=JghQgA2HMX8">test file</a>',
                         '<a  class="content"     href="http://moodle.org/testfile/test.avi">test mp3</a>',