private IEnumerable<IDownloadSource> ParseDownloadSources(string pageData, YoutubeVideoChannelSource channelSource)
{
var sources = new List<IDownloadSource>();
DownloadSourceCreator downloadSourceCreator = null;
int currentPosition = 0;
while (true)
{
string videoId = pageData.GetStringBetween(ref currentPosition, "\"encryptedVideoId\">", "<");
if (string.IsNullOrEmpty(videoId))
break;
videoId = videoId.Trim();
string videoUri = pageData.GetStringBetween(ref currentPosition, "<div class=\"playnav-video-thumb\"", " href=\"", "\"");
string videoThumb = pageData.GetStringBetween(ref currentPosition, " src=\"", "\"");
string videoTitle = pageData.GetStringBetween(ref currentPosition, "title=\"", "\"").HtmlDecode();
string videoTime = pageData.GetStringBetween(ref currentPosition, "<span class=\"video-time\">", "<");
string videoViews = pageData.GetStringBetween(ref currentPosition, "<div class=\"metadata\">", ">", " views");
videoThumb = new Uri(channelSource.Uri, videoThumb).AbsoluteUri;
int parsedViews = int.Parse(videoViews, System.Globalization.NumberStyles.AllowThousands);
var absoluteUri = new Uri(channelSource.Uri, videoUri);
if (downloadSourceCreator == null)
downloadSourceCreator = (DownloadSourceCreator)Factory.Context.FindFactoryByCreatorType(typeof(DownloadSourceCreator)).GetCreator(absoluteUri);
var videoParameters = new ParameterList();
videoParameters.AddValue(VideoDownloadSourceCreator.IdParameterName, videoId);
videoParameters.AddValue(VideoDownloadSourceCreator.TitleParameterName, videoTitle);
videoParameters.AddValue(VideoDownloadSourceCreator.DescriptionParameterName, channelSource.Description);
videoParameters.AddValue(VideoDownloadSourceCreator.ThumbnailParameterName, videoThumb);
videoParameters.AddValue(YoutubeVideoDownloadSourceCreator.UserParameterName, channelSource.User);
videoParameters.AddValue(YoutubeVideoDownloadSourceCreator.UserHrefParameterName, channelSource.UserHref);
videoParameters.AddValue(YoutubeVideoDownloadSourceCreator.TimeParameterName, videoTime);
videoParameters.AddValue(YoutubeVideoDownloadSourceCreator.ViewCountParameterName, parsedViews);
var ds = new YoutubeVideoDownloadSource(absoluteUri, downloadSourceCreator, videoParameters);
sources.Add(ds);
}
return sources;
}
public override ISource Create(Uri uri, string pageData)
{
string title = pageData.GetStringBetween("<meta name=\"title\" content=\"", "\"");
string description = pageData.GetStringBetween("<meta name=\"description\" content=\"", "\"");
string thumbnail = pageData.GetStringBetween("<meta property=\"og:image\" content=\"", "\"");
string viewsRegion = pageData.GetStringBetween("<span class=\"watch-view-count\"", ">", "</span>");
string views = viewsRegion.GetStringBetween("<strong>", "</strong>");
int viewCount = int.Parse(views, System.Globalization.NumberStyles.AllowThousands);
string userRegion = pageData.GetStringBetween("<a class=\"watch-description-username\"", "</a>");
string userHref = userRegion.GetStringBetween("href=\"", "\"");
string user = userRegion.GetStringBetween("<strong>", "</strong>");
string dateRegion = pageData.GetStringBetween("<span id=\"eow-date-short\"", ">", "</span>").Trim();
DateTime date = DateTime.Parse(dateRegion);
string flashVarsValue = pageData.GetStringBetween("<param name=\\\"flashvars\\\" value=\\\"", "\\\"");
string[] flashVarsSplit = flashVarsValue.Split('&');
SortedList<string, string> flashVars = new SortedList<string, string>(flashVarsSplit.Length);
foreach (string chunk in flashVarsSplit)
{
string[] chunkSplit = chunk.Split('=');
flashVars.Add(chunkSplit[0], Uri.UnescapeDataString(chunkSplit[1]));
}
string fmt_map = flashVars["fmt_map"];
string[] fmtSplit = fmt_map.Split(',');
Dictionary<int, int[]> qualityLevels = new Dictionary<int, int[]>();
foreach (string chunk in fmtSplit)
{
string[] fmt = chunk.Split('/');
string[] res = fmt[1].Split('x');
qualityLevels.Add(int.Parse(fmt[0]), new int[] { int.Parse(res[0]), int.Parse(res[1]) });
}
string id = flashVars["video_id"];
ParameterList parameters = new ParameterList();
parameters.AddValue(VideoDownloadSourceCreator.IdParameterName, id);
parameters.AddValue(VideoDownloadSourceCreator.TitleParameterName, title);
parameters.AddValue(VideoDownloadSourceCreator.DescriptionParameterName, description);
parameters.AddValue(VideoDownloadSourceCreator.ThumbnailParameterName, thumbnail);
parameters.AddValue(UserParameterName, user);
parameters.AddValue(UserHrefParameterName, userHref);
parameters.AddValue(DateParameterName, date);
parameters.AddValue(ViewCountParameterName, viewCount);
VideoDownloadSource downloadSource = new YoutubeVideoDownloadSource(uri, this, parameters);
string fmt_url_map = flashVars["fmt_url_map"];
string[] urlSplit = fmt_url_map.Split(',');
foreach (string chunk in urlSplit)
{
string[] fmt_url = chunk.Split('|');
Uri fmt_uri = new Uri(fmt_url[1]);
int qualityLevel = int.Parse(fmt_url[0]);
int[] res = qualityLevels[qualityLevel];
string resolution = String.Format("{0}x{1}", res[0], res[1]);
ParameterList specParameters = new ParameterList();
specParameters.AddValue(YoutubeVideoDownloadSpecifier.FmtParameterName, qualityLevel);
specParameters.AddValue(YoutubeVideoDownloadSpecifier.ResolutionParameterName, resolution);
specParameters.AddValue(YoutubeVideoDownloadSpecifier.MaxPixelHeightParameterName, res[1]);
DownloadSpecifier ds = new YoutubeVideoDownloadSpecifier(fmt_uri, downloadSource, specParameters);
downloadSource.Add(ds);
}
return downloadSource;
}