private void buttonNewRSS_Click(object sender, EventArgs e)
{
var rssCategory = listBoxCategory.SelectedItem as RssCategory;
if (rssCategory == null)
{
return;
}
var rssWebsite = new RssWebsite();
var subgroupForm = new RSSForm
{
RssWebsite = rssWebsite
};
if (subgroupForm.ShowDialog(this) == DialogResult.OK)
{
rssCategory.RssWebsites.Add(rssWebsite);
}
}
/// <summary>
/// Parse XML content from RSS feed
/// </summary>
/// <param name="html"></param>
/// <param name="rssCategory"></param>
/// <param name="rssWebsite"></param>
private void ParseRss(string html, RssCategory rssCategory, RssWebsite rssWebsite)
{
var doc = new XmlDocument();
doc.LoadXml(html);
var nodes = doc.SelectNodes("//item");
if (nodes == null)
{
return;
}
for (var i = nodes.Count - 1; i >= 0; i--) //get them in inverse order ( old items first
{
var rssItem = new RssItem
{
Category = rssCategory,
Website = rssWebsite
};
var xmlNode = nodes[i].SelectSingleNode("title");
if (xmlNode == null)
{
continue;
}
rssItem.Title = Utilities.CleanString(xmlNode.InnerText).Trim();
xmlNode = nodes[i].SelectSingleNode("link");
if (xmlNode == null)
{
continue;
}
rssItem.Link = xmlNode.InnerText;
xmlNode = nodes[i].SelectSingleNode("description");
if (xmlNode == null)
{
continue;
}
rssItem.Description = Utilities.CleanString(xmlNode.InnerText).Trim();
xmlNode = nodes[i].SelectSingleNode("pubDate");
if (xmlNode != null)
{
var text = xmlNode.InnerText;
if (Regex.IsMatch(text, "\\s[a-zA-Z]{3}$", RegexOptions.Multiline))
{
text = text.Substring(0, text.Length - 4);
}
DateTime tempDateTime;
if (DateTime.TryParse(text, new CultureInfo("en-US", false), DateTimeStyles.None,
out tempDateTime))
{
rssItem.PubDate = tempDateTime;
}
}
xmlNode = nodes[i].SelectSingleNode("author");
if (xmlNode != null)
{
rssItem.Author = Utilities.CleanString(xmlNode.InnerText).Trim();
}
xmlNode = nodes[i].SelectSingleNode("guid");
if (xmlNode != null)
{
rssItem.Guid = xmlNode.InnerText;
}
Logger.Info($"Retrieved RSS item \"{rssItem.Title}\" pub date {rssItem.PubDate} link {rssItem.Link}");
if (rssItem.PubDate > rssWebsite.LastUpdate)
{
Logger.Info($"Published RSS item \"{rssItem.Title}\" pub date {rssItem.PubDate} link {rssItem.Link}");
rssWebsite.LastUpdate = rssItem.PubDate;
OnNewRss(rssItem);
}
}
rssWebsite.FirstUpdate = false;
}
