private bool TestValidProtocol(iText.StyledXmlParser.Jsoup.Nodes.Element el, iText.StyledXmlParser.Jsoup.Nodes.Attribute
attr, ICollection <Whitelist.Protocol> protocols)
{
// try to resolve relative urls to abs, and optionally update the attribute so output html has abs.
// rels without a baseuri get removed
String value = el.AbsUrl(attr.Key);
if (value.Length == 0)
{
value = attr.Value;
}
// if it could not be made abs, run as-is to allow custom unknown protocols
if (!preserveRelativeLinks)
{
attr.SetValue(value);
}
foreach (Whitelist.Protocol protocol in protocols)
{
String prot = protocol.ToString();
if (prot.Equals("#"))
{
// allows anchor links
if (IsValidAnchor(value))
{
return(true);
}
else
{
continue;
}
}
prot += ":";
if (value.ToLowerInvariant().StartsWith(prot))
{
return(true);
}
}
return(false);
}
