MacroTube

<?xml version="1.0" encoding="utf-8"?>
<!-- YouTube provider - Last updated 2011-03-27 -->

<VideoService DefaultCategoryTransform="Feed" DefaultCategoryUrl="http://gdata.youtube.com/feeds/api/videos?category={Category.ID}&amp;orderby={SortOrder}&amp;start-index={Offset}&amp;max-results={Count}&amp;racy=exclude" Description="Founded in February 2005, YouTube is the leader in online video, and the premier destination to watch and share original videos worldwide through a Web experience." Image="http://services.jasmio.com/macrotube/providers/YouTube.png" Name="YouTube" SearchTransform="Feed" SearchUrl="http://gdata.youtube.com/feeds/api/videos?q={SearchTerm}&amp;orderby={SortOrder}&amp;start-index={Offset}&amp;max-results={Count}&amp;racy=exclude" Type="XSLT" UpdateUrl="http://services.jasmio.com/macrotube/providers/YouTube.xml" Version="1.5">
  <Categories>
    <Category ID="all" Name="All" Transform="Feed" Url="http://gdata.youtube.com/feeds/api/videos?orderby={SortOrder}&amp;start-index={Offset}&amp;max-results={Count}" />

<!-- To enable Favorites, un-comment the following Category line and replace USERNAME with your YouTube username.
     Thanks to jedipunk for figuring this out, as well as "most popular" link below -->
<!--
    <Category ID="Favorites" Name="Favorites" Transform="Feed" Url="http://gdata.youtube.com/feeds/api/users/USERNAME/favorites?v=2&amp;orderby={SortOrder}&amp;start-index={Offset}&amp;max-results={Count}&amp;fmt=18" />
-->

    <Category ID="Most-Popular" Name="Most-Popular" Transform="Feed" Url="http://gdata.youtube.com/feeds/api/standardfeeds/US/most_popular?v=2&amp;orderby={SortOrder}&amp;start-index={Offset}&amp;max-results={Count}&amp;fmt=18" />
    <Category ID="Autos" Name="Autos + Vehicles" />
    <Category ID="Comedy" Name="Comedy" />
    <Category ID="Education" Name="Education" />
    <Category ID="Entertainment" Name="Entertainment" />
    <Category ID="Film,Animation" Name="Film + Animation" />
    <Category ID="Gaming" Name="Gaming" />
    <Category ID="Howto,Style" Name="Howto + Style" />
    <Category ID="Music" Name="Music" />
    <Category ID="News,Politics" Name="News + Politics" />
    <Category ID="Nonprofits,Activism" Name="Nonprofits + Activism" />
    <Category ID="People,Blogs" Name="People + Blogs" />
    <Category ID="Pets,Animals" Name="Pets + Animals" />
    <Category ID="Science,Technology" Name="Science + Technology" />
    <Category ID="Sports" Name="Sports" />
    <Category ID="Travel,Events" Name="Travel + Events" />
  </Categories>
  <SortOrders>
    <SortOrder ID="published" Name="date" />
    <SortOrder ID="rating" Name="rating" />
    <SortOrder ID="viewCount" Name="views" />
    <SortOrder ID="relevance" Name="relevance" />
  </SortOrders>
  <Transforms>
    <Transform Name="Feed">
      <xsl:stylesheet version="1.0" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:openSearch="http://a9.com/-/spec/opensearchrss/1.0/" xmlns:gml="http://www.opengis.net/gml" xmlns:georss="http://www.georss.org/georss" xmlns:media="http://search.yahoo.com/mrss/" xmlns:yt="http://gdata.youtube.com/schemas/2007" xmlns:gd="http://schemas.google.com/g/2005" xmlns:msxsl="urn:schemas-microsoft-com:xslt" xmlns:func="urn:local-functions">
        <msxsl:script language="C#" implements-prefix="func"><![CDATA[
                
                Random random = new Random();
                
                public string escapeuridata(string unescaped)
                {
                    return Uri.EscapeDataString(unescaped);
                }
                public string fixthumbnail(string source)
                {
                    return source.Replace("http://i.ytimg.com", "http://i" + (random.Next(4) + 1).ToString() + ".ytimg.com");
                }
                ]]></msxsl:script>
        <xsl:output indent="yes" method="xml" />
        <xsl:template match="media:thumbnail">
          <xsl:element name="thumbnail">
            <xsl:attribute name="height">
              <xsl:value-of select="@height" />
            </xsl:attribute>
            <xsl:attribute name="time">
              <xsl:value-of select="@time" />
            </xsl:attribute>
            <xsl:attribute name="url">
              <xsl:value-of select="func:fixthumbnail(@url)" />
            </xsl:attribute>
            <xsl:attribute name="width">
              <xsl:value-of select="@width" />
            </xsl:attribute>
          </xsl:element>
        </xsl:template>
        <xsl:template match="media:player">
          <xsl:element name="video">
            <xsl:attribute name="type">application/x-shockwave-flash</xsl:attribute>
            <xsl:attribute name="url">
              <xsl:value-of select="@url" />&amp;fmt=18</xsl:attribute>
          </xsl:element>
        </xsl:template>
        <xsl:template match="atom:entry">
          <xsl:element name="item">
            <xsl:attribute name="date">
              <xsl:value-of select="atom:published" />
            </xsl:attribute>
            <xsl:attribute name="duration">
              <xsl:value-of select="media:group/yt:duration/@seconds" />
            </xsl:attribute>
            <xsl:attribute name="rating">
              <xsl:value-of select="(gd:rating/@average)*20" />
            </xsl:attribute>
            <xsl:attribute name="title">
              <xsl:value-of select="atom:title" />
            </xsl:attribute>
            <xsl:element name="description">
              <xsl:value-of select="atom:content" />
            </xsl:element>
            <xsl:element name="thumbnails">
              <xsl:apply-templates select="media:group/media:thumbnail" />
            </xsl:element>
            <xsl:element name="videos">
              <xsl:apply-templates select="media:group/media:player" />
              <xsl:apply-templates select="media:group/media:content" />
            </xsl:element>
          </xsl:element>
        </xsl:template>
        <xsl:template match="/atom:feed">
          <xsl:element name="items">
            <xsl:apply-templates select="atom:entry" />
          </xsl:element>
        </xsl:template>
      </xsl:stylesheet>
    </Transform>
  </Transforms>
  <VideoProviders>
    <VideoProvider class="MacroTube.Model.YouTubeVideoProvider"><![CDATA[

using System;
using System.Diagnostics;
using System.IO;
using System.Net;
using System.Text.RegularExpressions;

namespace MacroTube.Model
{
    public class YouTubeVideoProvider : VideoProvider
    {
        private static readonly Regex _watchMatch = new Regex(@"^http://www.youtube.com/watch\?(?:|.*&)v=([A-Za-z0-9_\-]+)(?:$|&.*$)", RegexOptions.Compiled);
        private static readonly Regex _idMatch = new Regex(@".*[\?v|\&]=([^\s\&]*).*", RegexOptions.Compiled | RegexOptions.Singleline);
        private static readonly Regex _signatureMatch = new Regex(@"^(?:.*'SWF_ARGS'\s*:.*\{[^\}]*""t""\s*:\s*"")([^""]+)(?:"".*)$", RegexOptions.Compiled | RegexOptions.Singleline);
        
        private static readonly Regex _swfvarsMatch20110306 = new Regex(@"^.*<object\s.*?<param name=""flashvars""\s+value="".*&amp;fmt_url_map=([^&\\]+).*$", RegexOptions.Compiled | RegexOptions.Singleline);
        private static readonly Regex _swfconfigMatch20110306 = new Regex(@"^.*var swfConfig\s+=.*, ""fmt_url_map"": ""([^""]*)"".*$", RegexOptions.Compiled | RegexOptions.Singleline);

        public YouTubeVideoProvider()
            : base()
        {
        }

        public override string GetDownloadUrl(string sourceURL)
        {
            if (!IsProvider(sourceURL)) return null;

            string resolvedURL = null;

            Debug.WriteLine(string.Format("Source URL v1.4a: {0}", sourceURL));

            try
            {
                string html = new WebClient().DownloadString(sourceURL);
                
                if (_swfvarsMatch20110306.IsMatch(html))
                {
                    Debug.WriteLine( "swfvars regex matched" );

                    string fmt_url_match = Uri.UnescapeDataString(_swfvarsMatch20110306.Replace(html, "$1"));
                    
                    Debug.WriteLine(string.Format("fmt_url_match={0}", fmt_url_match));
                    
                    foreach (string fmt_url in fmt_url_match.Split(','))
                    {
                        Debug.WriteLine(string.Format("fmt_url={0}", fmt_url));
                        
                        if (fmt_url.StartsWith("18|"))
                        {
                            resolvedURL = fmt_url.Substring(3);
                            break;
                        }
                    }
                }
                else if (_swfconfigMatch20110306.IsMatch(html))
                {
                    Debug.WriteLine( "swfconfig regex matched" );

                    string fmt_url_match = _swfconfigMatch20110306.Replace(html, "$1");
                    
                    Debug.WriteLine(string.Format("fmt_url_match={0}", fmt_url_match));
                    
                    foreach (string fmt_url_esc in fmt_url_match.Split(','))
                    {
                        string fmt_url = Regex.Unescape( Uri.UnescapeDataString( fmt_url_esc ) );

                        Debug.WriteLine(string.Format("fmt_url={0}", fmt_url));
                        
                        if (fmt_url.StartsWith("18|"))
                        {
                            resolvedURL = fmt_url.Substring(3);
                            break;
                        }
                    }
                }
                else if (_signatureMatch.IsMatch(html))
                {
                    resolvedURL = string.Format("http://www.youtube.com/get_video?video_id={0}&t={1}&fmt=18", _idMatch.Replace(sourceURL, "$1"), _signatureMatch.Replace(html, "$1"));
                }
                else
                {
                    Debug.WriteLine( "No regex match... here comes the full HTML" );
                    Debug.WriteLine( html );
                }
                
                Debug.WriteLine(string.Format("Resolved URL: {0}", resolvedURL));
            }
            catch (Exception ex)
            {
                Debug.WriteLine(string.Format("Error getting download URL: {0}\r\n{1}\r\n{2}", sourceURL, ex));
            }

            return Uri.IsWellFormedUriString(resolvedURL, UriKind.Absolute) ? resolvedURL : null;
        }

        public override bool IsProvider(string url)
        {
            return _watchMatch.IsMatch(url);
        }
    }
}

        ]]></VideoProvider>
  </VideoProviders>
</VideoService>