public override void Run()
{
HeadlineCollection headlines = new HeadlineCollection();
try
{
//DateTime now = DateTime.Now;
DateTime now = DateTime.FromFileTime(0);
string strFileName = Names.FeedsFolder + m_feedNode.FileName;
if (File.Exists(strFileName))
{
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(strFileName);
FeedManager = new FeedManager(xmlDoc.NameTable);
FeedManager.TransferNamespaces(xmlDoc);
XmlNodeList xmlNodes = xmlDoc.SelectNodes("/rss/channel//item");
foreach (XmlNode xmlNode in xmlNodes)
{
string title = FeedManager.GetNodeContent(xmlNode, "title");
DateTime dtPublished = FeedManager.GetNodeDate(xmlNode, "pubDate", now);
DateTime dtReceived = FeedManager.GetNodeDate(xmlNode, "comshak:rcvDate", now);
string author = FeedManager.GetNodeContent(xmlNode, "author");
string desc = FeedManager.GetNodeContent(xmlNode, "description", NCEncoding.String, NCType.Text);
string link = FeedManager.GetNodeContent(xmlNode, "link");
string categ = FeedManager.GetNodeContent(xmlNode, "category");
Enclosure enc = FeedManager.GetEnclosure(xmlNode, "enclosure");
Headline headline = new Headline(title, dtPublished, dtReceived, author, desc, categ, enc);
headline.Link = link;
headlines.Add(headline);
}
}
}
catch (FileNotFoundException ex)
{
Utils.DbgOutExc("ReadChannelThread::Run()", ex);
}
catch (XmlException xmlEx)
{
Utils.DbgOutExc("ReadChannelThread::Run()", xmlEx);
}
//catch (Exception ex)
//{
// Utils.DbgOutExc("ReadChannelThread::Run()", ex);
//}
finally
{
m_form.Invoke(new OnEndCallback(OnEnd), new object[] { headlines });
}
}
public void UpdateChannel(string strXmlUrl)
{
try
{
DateTime dtLastUpdate = DateTime.MinValue;
string strFileName = Names.FeedsFolder + m_feedNode.FileName;
XmlDocument xmlResponse = null;
if (!String.IsNullOrEmpty(m_strTempFeedFile))
{
if (System.IO.File.Exists(m_strTempFeedFile))
{
dtLastUpdate = DateTime.Now;
xmlResponse = new XmlDocument();
xmlResponse.Load(m_strTempFeedFile);
}
}
else
{
dtLastUpdate = GetLastUpdate(strFileName);
#if DEBUG
xmlResponse = Utils.DownloadXml(strXmlUrl, strFileName + ".xml", ref dtLastUpdate);
#else
xmlResponse = Utils.DownloadXml(strXmlUrl, null, ref dtLastUpdate);
#endif
}
if (xmlResponse != null)
{
FeedManager = new FeedManager(xmlResponse.NameTable);
FeedManager.LastUpdated = dtLastUpdate;
m_feedFormat = FeedManager.TransferNamespaces(xmlResponse);
Debug.WriteLine("The feed is " + m_feedFormat);
MergeFeeds(strFileName, xmlResponse);
}
}
catch (Exception ex)
{
Utils.DbgOutExc("UpdateChannelThread::UpdateChannel()", ex);
}
finally
{
if (!String.IsNullOrEmpty(m_strTempFeedFile))
{
#if DEBUG
Utils.MoveFile(m_strTempFeedFile, Names.FeedsFolder + m_feedNode.FileName + ".xml");
#endif
Utils.DeleteFile(m_strTempFeedFile);
}
}
}
/// <summary>
/// Writes items from an RSS feed (rdf:RDF).
/// </summary>
/// <param name="xmlDocument"></param>
/// <param name="xmlWriter"></param>
private void WriteRdfItems(XmlDocument xmlDocument, RssChannel rssChannel)
{
DateTime now = DateTime.Now;
XmlNodeList xmlNodes = xmlDocument.SelectNodes("/rdf:RDF//rss:item", FeedManager.NsManager);
foreach (XmlNode xmlNode in xmlNodes)
{
RssItem rssItem = new RssItem();
rssItem.Title = FeedManager.GetNodeContent(xmlNode, "rss:title");
rssItem.Link = FeedManager.GetNodeContent(xmlNode, "rss:link");
rssItem.Published = FeedManager.GetNodeContent(xmlNode, "dc:date");
rssItem.ReceivedDate = now;
//localItem.Author = GetNodeText(xmlNode, "???");
rssItem.Description = FeedManager.GetNodeContent(xmlNode, "rss:description");
rssChannel.AddItem(rssItem);
}
}
/// <summary>
/// Merges an update XML (in any format) into the older local RSS channel XML file.
/// </summary>
/// <param name="strFileName">File name/path of the local RSS channel XML file.</param>
/// <param name="xmlUpdate">XML of the update with the latest entries.</param>
private void MergeFeeds(string strFileName, XmlDocument xmlUpdate)
{
try
{
RssChannel rssChannel = new RssChannel();
rssChannel.FileName = strFileName;
string strDefNamespace = FeedManager.DefaultNamespace;
if (m_feedFormat == FeedFormat.Rss || m_feedFormat == FeedFormat.Rss2)
{
rssChannel.Title = FeedManager.GetNodeContent(xmlUpdate.DocumentElement, "/rss/channel/title");
rssChannel.Link = FeedManager.GetNodeContent(xmlUpdate.DocumentElement, "/rss/channel/link");
rssChannel.Description = FeedManager.GetNodeContent(xmlUpdate.DocumentElement, "/rss/channel/description");
rssChannel.LastUpdated = FeedManager.LastUpdated;
WriteRssItems(xmlUpdate, rssChannel);
}
else if (m_feedFormat == FeedFormat.Atom)
{
FeedManager.AddNamespace("atom", strDefNamespace);
rssChannel.Title = FeedManager.GetNodeContent(xmlUpdate.DocumentElement, "/atom:feed/atom:title");
rssChannel.Link = FeedManager.GetNodeContent(xmlUpdate.DocumentElement, "/atom:feed/atom:link[@rel=\"alternate\" and @type=\"text/html\"]/@href");
rssChannel.Description = FeedManager.GetNodeContent(xmlUpdate.DocumentElement, "/atom:feed/atom:subtitle");
rssChannel.LastUpdated = FeedManager.LastUpdated;
WriteAtomItems(xmlUpdate, rssChannel);
}
else if (m_feedFormat == FeedFormat.Rdf)
{
FeedManager.AddNamespace("rss", strDefNamespace);
rssChannel.Title = FeedManager.GetNodeContent(xmlUpdate.DocumentElement, "/rdf:RDF/rss:channel/rss:title");
rssChannel.Link = FeedManager.GetNodeContent(xmlUpdate.DocumentElement, "/rdf:RDF/rss:channel/rss:link");
rssChannel.LastUpdated = FeedManager.LastUpdated;
WriteRdfItems(xmlUpdate, rssChannel);
}
rssChannel.Merge();
}
catch (Exception ex)
{
Utils.DbgOutExc("UpdateChannelThread::MergeFeeds()", ex);
}
}
/// <summary>
/// Writes items from an ATOM feed.
/// </summary>
/// <param name="xmlDocument"></param>
/// <param name="xmlWriter"></param>
private void WriteAtomItems(XmlDocument xmlDocument, RssChannel rssChannel)
{
NCEncoding encoding = NCEncoding.String;
DateTime now = DateTime.Now;
XmlNodeList xmlNodes = xmlDocument.SelectNodes("/atom:feed//atom:entry", FeedManager.NsManager);
foreach (XmlNode xmlNode in xmlNodes)
{
RssItem rssItem = new RssItem();
rssItem.Title = FeedManager.GetNodeContent(xmlNode, "atom:title");
rssItem.Link = FeedManager.GetNodeContent(xmlNode, "atom:link[@rel=\"alternate\" and @type=\"text/html\"]/@href");
rssItem.Published = FeedManager.GetNodeContentFrom(xmlNode, s_arrAtomPubDate, ref encoding);
rssItem.ReceivedDate = now;
rssItem.Author = FeedManager.GetNodeContent(xmlNode, "atom:author/atom:name");
rssItem.Description = FeedManager.GetNodeContentFrom(xmlNode, s_arrAtomDesc, ref encoding);
rssItem.Encoding = encoding;
rssChannel.AddItem(rssItem);
}
}
/// <summary>
/// Writes items from an RSS feed.
/// </summary>
/// <param name="xmlDocument"></param>
/// <param name="xmlWriter"></param>
private void WriteRssItems(XmlDocument xmlDocument, RssChannel rssChannel)
{
NCEncoding encoding = NCEncoding.String;
DateTime now = DateTime.Now;
XmlNodeList xmlNodes = xmlDocument.SelectNodes("/rss/channel//item", FeedManager.NsManager);
foreach (XmlNode xmlNode in xmlNodes)
{
RssItem rssItem = new RssItem();
rssItem.Title = FeedManager.GetNodeContent(xmlNode, "title");
rssItem.Link = FeedManager.GetNodeContent(xmlNode, "link");
rssItem.Published = FeedManager.GetNodeContentFrom(xmlNode, s_arrRssPubDate, ref encoding);
rssItem.ReceivedDate = now;
rssItem.Author = FeedManager.GetNodeContentFrom(xmlNode, s_arrRssAuthor, ref encoding);
rssItem.Description = FeedManager.GetNodeContentFrom(xmlNode, s_arrRssDesc, ref encoding);
rssItem.Category = FeedManager.GetNodeContent(xmlNode, "category");
rssItem.Encoding = encoding;
rssItem.Enclosure = FeedManager.GetEnclosure(xmlNode, "enclosure");
rssChannel.AddItem(rssItem);
}
}
