private void ParsePodcastMeta(XElement e, PodcastRaw podcastRaw)
{
switch (e.Name.ToString().ToLower())
{
case "title":
podcastRaw.Title = e.Value;
break;
case "link":
podcastRaw.LinkWebsiteURL = e.Value;
break;
case "language":
podcastRaw.Language = e.Value;
break;
case "description":
podcastRaw.Description = e.Value;
break;
case "category":
podcastRaw.Category = e.Value;
break;
case "pubdate":
podcastRaw.PubDate = e.Value;
break;
case "lastbuilddate":
podcastRaw.LastBuildDate = e.Value;
break;
case "image":
if (e.HasElements)
{
XElement x = e.Elements("url").FirstOrDefault();
if (x != null && !x.IsEmpty)
{
podcastRaw.ImageURL = x.Value;
}
}
break;
case "copyright":
podcastRaw.Copyright = e.Value;
break;
case "webmaster":
podcastRaw.Webmaster = e.Value;
break;
case "managingeditor":
podcastRaw.ManagingEditor = e.Value;
break;
case "generator":
podcastRaw.FeedGenerator = e.Value;
break;
}
}
private async Task<List<EpisodeRaw>> MultipageEpisodeListAsync(PodcastRaw praw)
{
List<EpisodeRaw> episodes = new List<EpisodeRaw>();
string next = praw.LinkFeedNextPageURL;
while (!string.IsNullOrEmpty(next))
{
PodcastRaw p = await GetPodcastRawAsync(next);
episodes.AddRange(p.Episodes);
next = p.LinkFeedNextPageURL;
}
return episodes;
}
public PodcastRaw ParseNewPodcast(XElement channel)
{
PodcastRaw podcastRaw = new PodcastRaw();
foreach (var e in channel.Elements())
{
ParsePodcastMeta(e, podcastRaw);
ParsePodcastMetaAtom(e, podcastRaw);
ParsePodcastMetaItunes(e, podcastRaw);
}
return podcastRaw;
}
public async Task<PodcastRaw> GetPodcastRawAsync(string url)
{
PodcastRaw podcast = new PodcastRaw();
podcast.LinkFeedURL = url.ToLower();
ParserPodcastRaw pparse = new ParserPodcastRaw();
ParserEpisodeRaw eparse = new ParserEpisodeRaw();
XElement root = await LoadWebFeedAsync(url);
var channel = root.Descendants("channel").FirstOrDefault();
podcast = pparse.ParseNewPodcast(channel);
var items = root.Descendants("item");
podcast.Episodes = eparse.ParseNewEpisodeRawList(items);
return podcast;
}
public Podcast ParsePodcast(PodcastRaw praw)
{
Podcast podcast = new Podcast();
podcast.Title = praw.Title;
podcast.Author = praw.ItunesAuthor;
if (!string.IsNullOrEmpty(praw.LinkWebsiteURL))
{
podcast.WebsiteURL = praw.LinkWebsiteURL.ToLower();
}
if (!string.IsNullOrEmpty(praw.ItunesImageURL))
{
podcast.ImageURL = praw.ItunesImageURL.ToLower();
podcast.ImageURI = new Uri(podcast.ImageURL);
}
else
{
if (!string.IsNullOrEmpty(praw.ImageURL))
{
podcast.ImageURL = praw.ImageURL.ToLower();
podcast.ImageURI = new Uri(podcast.ImageURL);
}
}
podcast.Language = praw.Language;
podcast.Copyright = praw.Copyright;
DateTime lastbuilddate;
if (DateTime.TryParse(praw.PubDate, out lastbuilddate))
{
podcast.LastBuild = lastbuilddate;
}
else
{
podcast.LastBuild = DateTime.Now;
}
podcast.FeedAlt = praw.LinkAlternateFeeds;
if (podcast.HasFeedAlt)
{
foreach (var f in podcast.FeedAlt)
{
f.URL = f.URL.ToLower();
}
}
podcast.Subtitle = praw.ItunesSubtitle;
podcast.Summary = praw.ItunesSummary;
podcast.Description = praw.Description;
podcast.Keywords = praw.ItunesKeywords;
podcast.Categorys = praw.ItunesCategorys;
podcast.Contributors = praw.Contributors;
if (podcast.HasContributors)
{
foreach (var c in podcast.Contributors)
{
if (!string.IsNullOrEmpty(c.URI))
{
c.URI = c.URI.ToLower();
}
}
}
podcast.PaymentLinks = praw.LinkPayments;
if (podcast.HasPaymentLinks)
{
foreach (var p in podcast.PaymentLinks)
{
p.URL = p.URL.ToLower();
}
}
return podcast;
}
private void ParsePodcastMetaAtom(XElement e, PodcastRaw podcastRaw)
{
if (e.Name.ToString().ToLower() == "{" + FeedNamespaceCollection.atom + "}link" && e.HasAttributes && e.Attribute("rel") != null)
{
switch (e.Attribute("rel").Value)
{
case "alternate":
if (podcastRaw.LinkAlternateFeeds == null)
{
podcastRaw.LinkAlternateFeeds = new List<AlternateFeed>();
}
podcastRaw.LinkAlternateFeeds.Add(new AlternateFeed() { Title = e.Attribute("title").Value, URL = e.Attribute("href").Value });
break;
case "next":
podcastRaw.LinkFeedNextPageURL = e.Attribute("href").Value;
break;
case "first":
podcastRaw.LinkFeedFirstPageURL = e.Attribute("href").Value;
break;
case "last":
podcastRaw.LinkFeedLastPageURL = e.Attribute("href").Value;
break;
case "payment":
if (e.HasAttributes && e.Attribute("href") != null && e.Attribute("title") != null)
{
if (podcastRaw.LinkPayments == null)
{
podcastRaw.LinkPayments = new List<Payment>();
}
podcastRaw.LinkPayments.Add(new Payment() { URL = e.Attribute("href").Value, Title = e.Attribute("title").Value });
}
break;
}
}
if (e.Name.ToString().ToLower() == "{" + FeedNamespaceCollection.atom + "}contributor" && e.HasElements)
{
Contributor c = new Contributor();
foreach (var i in e.Elements())
{
if (i.Name.ToString().ToLower() == "{" + FeedNamespaceCollection.atom + "}name")
{
c.Name = i.Value;
}
if (i.Name.ToString().ToLower() == "{" + FeedNamespaceCollection.atom + "}uri")
{
c.URI = i.Value;
}
}
if (c.Name != null && c.Name != "")
{
if (podcastRaw.Contributors == null)
{
podcastRaw.Contributors = new List<Contributor>();
}
podcastRaw.Contributors.Add(c);
}
}
}
private void ParsePodcastMetaItunes(XElement e, PodcastRaw podcastRaw)
{
switch (e.Name.ToString().ToLower())
{
case "{" + FeedNamespaceCollection.itunes + "}subtitle":
podcastRaw.ItunesSubtitle = e.Value;
break;
case "{" + FeedNamespaceCollection.itunes + "}author":
podcastRaw.ItunesAuthor = e.Value;
break;
case "{" + FeedNamespaceCollection.itunes + "}summary":
podcastRaw.ItunesSummary = e.Value;
break;
case "{" + FeedNamespaceCollection.itunes + "}keywords":
if (e.Value != "")
{
if (podcastRaw.ItunesKeywords == null)
{
podcastRaw.ItunesKeywords = new List<string>();
}
string k = e.Value;
string[] kk = k.Split(',');
foreach (var kkk in kk)
{
podcastRaw.ItunesKeywords.Add(kkk.Trim().ToLower());
}
}
break;
case "{" + FeedNamespaceCollection.itunes + "}category":
if (e.HasAttributes && e.Attribute("text") != null && e.Attribute("text").Value != "")
{
ItunesCategory c = new ItunesCategory();
c.Name = e.Attribute("text").Value;
if (e.HasElements)
{
c.SubCategorys = new List<string>();
foreach (var cc in e.Elements())
{
if (cc.HasAttributes && cc.Attribute("text") != null && cc.Attribute("text").Value != "")
{
c.SubCategorys.Add(cc.Attribute("text").Value);
}
}
}
if (podcastRaw.ItunesCategorys == null)
{
podcastRaw.ItunesCategorys = new List<ItunesCategory>();
}
podcastRaw.ItunesCategorys.Add(c);
}
break;
case "{" + FeedNamespaceCollection.itunes + "}owner":
if (e.HasElements)
{
ItunesOwner io = new ItunesOwner();
foreach (var o in e.Elements())
{
if (o.Name.ToString().ToLower() == "{" + FeedNamespaceCollection.itunes + "}name")
{
io.Name = o.Value;
}
if (o.Name.ToString().ToLower() == "{" + FeedNamespaceCollection.itunes + "}email")
{
io.EMail = o.Value;
}
}
if (io.Name != null && io.Name != "")
{
podcastRaw.ItunesOwner = io;
}
}
break;
case "{" + FeedNamespaceCollection.itunes + "}image":
if (e.HasAttributes && e.Attribute("href") != null && e.Attribute("href").Value != "")
{
podcastRaw.ItunesImageURL = e.Attribute("href").Value;
}
break;
}
}