private void LoadRss(XmlDocument xmlDoc)
{
foreach (XmlElement item in xmlDoc.GetElementsByTagName("item"))
{
var pubDate = GetPubDateForItem(item);
// Check for an image element.
var node = item.SelectSingleNode("image");
if (node != null && node.NodeType == XmlNodeType.Element)
{
node = node.SelectSingleNode("url");
if (node != null && node.NodeType == XmlNodeType.Element)
{
var url = node.InnerText;
if (!string.IsNullOrWhiteSpace(url))
{
Log.Write(LogLevel.Debug, "Found image in item image element '{0}'.", url);
_images.Add(ImageRec.FromUrl(url, pubDate));
}
}
}
// Scrape the HTML in the description.
node = item.SelectSingleNode("description");
if (node != null && node.NodeType == XmlNodeType.Element)
{
SearchHtmlForImages(node.InnerText, pubDate);
}
}
}
private void LoadAtom(XmlDocument xmlDoc)
{
foreach (XmlElement entry in xmlDoc.GetElementsByTagName("entry"))
{
var pubDate = GetPubDateForItem(entry);
foreach (XmlNode node in entry.ChildNodes)
{
if (node.NodeType != XmlNodeType.Element)
{
continue;
}
if (node.Name == "content")
{
XmlElement content = (XmlElement)node;
var type = content.GetAttribute("type");
if (string.IsNullOrEmpty(type) || type == "html" || type == "xhtml")
{
SearchHtmlForImages(content.InnerText, pubDate);
}
else if (type.StartsWith("image/"))
{
var src = content.GetAttribute("src");
if (!string.IsNullOrWhiteSpace(src))
{
_images.Add(ImageRec.FromUrl(src, pubDate));
}
}
}
}
}
}
private void SearchHtmlNodeForImages(HtmlNode parentNode, DateTime pubDate)
{
foreach (var node in (from n in parentNode.ChildNodes
where n.NodeType == HtmlNodeType.Element
select n))
{
if (node.Name == "img")
{
var src = node.GetAttributeValue("src", "");
if (!string.IsNullOrWhiteSpace(src))
{
Log.Write(LogLevel.Debug, "Found image in item HTML '{0}'.", src);
_images.Add(ImageRec.FromUrl(src, pubDate));
}
}
else if (node.HasChildNodes)
{
SearchHtmlNodeForImages(node, pubDate);
}
}
}