From 84911b9707c9c2aa8547cf72cd6580475cc283d9 Mon Sep 17 00:00:00 2001
From: Scott Taylor <scott.c.taylor@mac.com>
Date: Fri, 31 Jan 2014 18:59:13 +0000
Subject: [PATCH] Let the video shortcode accept a YouTube URL as the value of
 its `src` attribute, as MediaElement.js supports Chromeless YouTube videos by
 using a pseudo-mime-type `video/youtube`.

HTTP and HTTPS www, non-www, and short url fronts are supported:
http://www.youtube.com/watch
https://www.youtube.com/watch
http://youtube.com/watch
https://youtube.com/watch
http://youtu.be
https://youtu.be

Fixes #24764.


Built from https://develop.svn.wordpress.org/trunk@27063


git-svn-id: http://core.svn.wordpress.org/trunk@26936 1a063a9b-81f0-0310-95a4-ce76da25c4cd
---
 wp-includes/media.php | 24 +++++++++++++++++-------
 1 file changed, 17 insertions(+), 7 deletions(-)

diff --git a/wp-includes/media.php b/wp-includes/media.php
index 5073087474..b5f130d010 100644
--- a/wp-includes/media.php
+++ b/wp-includes/media.php
@@ -1147,11 +1147,16 @@ function wp_video_shortcode( $attr, $content = '' ) {
 
 	$width = $w;
 
+	$yt_pattern = '#^https?://(:?www\.)?(:?youtube\.com/watch|youtu\.be/)#';
+
 	$primary = false;
 	if ( ! empty( $src ) ) {
-		$type = wp_check_filetype( $src, wp_get_mime_types() );
-		if ( ! in_array( strtolower( $type['ext'] ), $default_types ) )
-			return sprintf( '<a class="wp-embedded-video" href="%s">%s</a>', esc_url( $src ), esc_html( $src ) );
+		if ( ! preg_match( $yt_pattern, $src ) ) {
+			$type = wp_check_filetype( $src, wp_get_mime_types() );
+			if ( ! in_array( strtolower( $type['ext'] ), $default_types ) ) {
+				return sprintf( '<a class="wp-embedded-video" href="%s">%s</a>', esc_url( $src ), esc_html( $src ) );
+			}
+		}
 		$primary = true;
 		array_unshift( $default_types, 'src' );
 	} else {
@@ -1216,10 +1221,15 @@ function wp_video_shortcode( $attr, $content = '' ) {
 		if ( ! empty( $$fallback ) ) {
 			if ( empty( $fileurl ) )
 				$fileurl = $$fallback;
-			$type = wp_check_filetype( $$fallback, wp_get_mime_types() );
-			// m4v sometimes shows up as video/mpeg which collides with mp4
-			if ( 'm4v' === $type['ext'] )
-				$type['type'] = 'video/m4v';
+
+			if ( 'src' === $fallback && preg_match( $yt_pattern, $src ) ) {
+				$type = array( 'type' => 'video/youtube' );
+			} else {
+				$type = wp_check_filetype( $$fallback, wp_get_mime_types() );
+				// m4v sometimes shows up as video/mpeg which collides with mp4
+				if ( 'm4v' === $type['ext'] )
+					$type['type'] = 'video/m4v';
+			}
 			$html .= sprintf( $source, $type['type'], esc_url( $$fallback ) );
 		}
 	}