private void ReplaceContent(NodeCollection nodes, Node target, string content, string raw)
{
if (nodes == null || target == null)
{
throw new ArgumentNullException();
}
Node[] nn = CreateContent(content, raw);
foreach (Node n in nn)
{
nodes.InsertBefore(target, n);
}
nodes.Remove(target);
}
/// <summary>
/// Sanitizes the stream of nodes into exclusively valid AOML.
/// This process involves changing and removing nodes.
/// </summary>
public void Sanitize(NodeCollection nodes)
{
if (nodes == null)
{
throw new ArgumentNullException();
}
// Loop through all nodes
nodes.Reset();
Node node = null;
while ((node = nodes.Next()) != null)
{
// Skip content nodes
if (node.Type == NodeType.Content)
{
continue;
}
// Gather info
OpenNode openNode = null;
CloseNode closeNode = null;
string name = null;
if (node.Type == NodeType.Open)
{
openNode = (OpenNode)node;
name = openNode.Name;
// Check attributes
for (int i = 0; i < openNode.Count; i++)
{
string attr = openNode.GetAttributeName(i);
if (!validAttributes.Contains(attr))
{
openNode.RemoveAttribute(attr);
i--;
}
}
}
else if (node.Type == NodeType.Close)
{
closeNode = (CloseNode)node;
name = closeNode.Name;
}
// Singular elements
if (singularElements.Contains(name))
{
// Singular elements don't have closing nodes
if (closeNode != null)
{
nodes.Remove(closeNode);
}
// Singular elements are always self-closing
if (openNode != null)
{
openNode.Closed = true;
}
continue;
}
else if (inlineElements.Contains(name) || blockElements.Contains(name))
{
if (openNode == null)
{
continue;
}
// Let's not use self-closing elements here
if (openNode.Closed)
{
openNode.Closed = false;
nodes.InsertAfter(openNode, new CloseNode(name, ""));
}
continue;
}
// Replace node as content node
if (this.InvalidElementsToContent)
{
// Replace node as content
this.ReplaceContent(nodes, node, node.Raw, node.Raw);
}
else
{
// Remove node
this.ReplaceContent(nodes, node, "", "");
}
}
// And we're done!
nodes.Reset();
}