private static string MakeLinksAbsolute(HtmlParser parser, HtmlMarkupFormatter formatter, IExecutionContext context, string value)
{
if (!string.IsNullOrEmpty(value))
{
IHtmlDocument dom = parser.Parse(string.Empty);
INodeList nodes = parser.ParseFragment(value, dom.Body);
IEnumerable <IElement> elements = nodes.SelectMany(x => x.Descendents <IElement>().Where(y => y.HasAttribute("href") || y.HasAttribute("src")));
bool replaced = false;
foreach (IElement element in elements)
{
replaced = MakeLinkAbsolute(element, "href", context) || replaced;
replaced = MakeLinkAbsolute(element, "src", context) || replaced;
}
if (replaced)
{
using (StringWriter writer = new StringWriter())
{
nodes.ToHtml(writer, formatter);
return(writer.ToString());
}
}
}
return(null);
}