/// <summary>
/// Reads all items from a given XML file
/// </summary>
/// <param name="feedXML">The XML file from the feed</param>
/// <returns>IEnumerable with all IFeedItems - some properties might be empty</returns>
public static async Task <IEnumerable <FeedItem> > ParseItemsFromXML(XDocument feedXML, Feed fromFeed)
{
DbgHelper.CurrentNumberOfFeeds("Beginn von ParseItemsFromXML");
IList <FeedItem> items = new List <FeedItem>();
var itemElements = feedXML.Descendants(Param.XMLItemTag);
foreach (var item in itemElements)
{
var titleElement = item.Descendants(Param.XMLTitleTag).FirstOrDefault();
var title = (titleElement != null) ? titleElement.Value : Param.PlaceHolderString;
var descriptionElement = item.Descendants(Param.XMLDescriptionTag).FirstOrDefault();
var description = (descriptionElement != null) ? descriptionElement.Value : String.Empty;
if (String.IsNullOrEmpty(description) && !String.IsNullOrEmpty(title))
{
description = title;
title = title.Substring(0, Math.Min(title.Length, 75));
}
var contentElement = item.Descendants().Where(e => e.Name.ToString().Contains(Param.XMLContentTag)).FirstOrDefault(); //(Param.XMLContentTag).FirstOrDefault();
var content = (contentElement != null) ? contentElement.Value : String.Empty;
var dateElement = item.Descendants(Param.XMLPubDateTag).FirstOrDefault();
var date = (dateElement != null) ? DateTime.Parse(dateElement.Value) : default(DateTime);
var guidElement = item.Descendants(Param.XMLGuidTag).FirstOrDefault();
var guid = (guidElement != null) ? guidElement.Value : Guid.NewGuid().ToString();
var linkElement = item.Descendants(Param.XMLLinkTag).FirstOrDefault();
var link = (linkElement != null) ? linkElement.Value : Param.PlaceHolderString;
FeedItem feedItem = new FeedItem(fromFeed, title, description, content, date, guid, link);
items.Add(feedItem);
}
DbgHelper.CurrentNumberOfFeeds("Ende von ParseItemsFromXML");
return(items);
}
public static async Task <IEnumerable <FeedItem> > ReadItemsFromFile(string feedFile, Feed fromFeed)
{
DbgHelper.CurrentNumberOfFeeds("Beginn von ReadItemsFromFile");
var fileString = File.ReadAllText(feedFile).Trim();
XDocument feedXML = XDocument.Parse(fileString);
return(await ParseItemsFromXML(feedXML, fromFeed));
}
public static async Task <IEnumerable <FeedItem> > ReadItemsFromWeb(string feedUri, Feed fromFeed)
{
DbgHelper.CurrentNumberOfFeeds("Beginn von ReadItemsFromWeb");
WebClient client = new WebClient();
client.UseDefaultCredentials = true;
client.Encoding = Encoding.UTF8;
var feedString = client.DownloadString(new Uri(feedUri));
XDocument feedXML = XDocument.Parse(feedString.Trim());
return(await ParseItemsFromXML(feedXML, fromFeed));
}
