/// <summary>
/// Applies the specified operation to the specified node. Return false if the node was removed or does not need any futher processing.
/// </summary>
/// <param name="node"></param>
/// <param name="operation"></param>
/// <returns></returns>
private bool ApplyNodeOperation(HtmlNode node, SanitizerOperation operation)
{
switch (operation)
{
case SanitizerOperation.FlattenTag:
// Sanitize children, then insert them after this node and remove this node.
// Do this in reverse to allow removal of nodes without hassle.
for (int i = node.ChildNodes.Count - 1; i >= 0; i--)
{
SanitizeNode(node.ChildNodes[i]);
}
foreach (var child in node.ChildNodes)
{
node.ParentNode.InsertBefore(child, node);
}
node.Remove();
return(false);
case SanitizerOperation.RemoveTag:
node.Remove();
return(false);
case SanitizerOperation.DoNothing:
return(true);
default:
throw new InvalidOperationException("Unsupported sanitation operation.");
}
}
/// <summary>
/// Applies the specified operation to the specified node. Return false if the node was removed or does not need any futher processing.
/// </summary>
/// <param name="node"></param>
/// <param name="operation"></param>
/// <returns></returns>
private bool ApplyNodeOperation(HtmlNode node, SanitizerOperation operation)
{
switch (operation)
{
case SanitizerOperation.FlattenTag:
// Sanitize children, then insert them after this node and remove this node.
SanitizeChildren(node);
foreach (var child in node.ChildNodes)
{
node.ParentNode.InsertBefore(child, node);
}
node.Remove();
return(false);
case SanitizerOperation.RemoveTag:
node.Remove();
return(false);
case SanitizerOperation.DoNothing:
return(true);
default:
throw new InvalidOperationException("Unsupported sanitation operation.");
}
}
/// <summary>
/// Applies the specified global operation to a tag matching this rule.
/// </summary>
/// <param name="rule"></param>
/// <param name="operation"></param>
public static HtmlSanitizerTagRule Operation(this HtmlSanitizerTagRule rule, SanitizerOperation operation)
{
rule.Operation = operation;
return(rule);
}
/// <summary>Specifies the operation to perform if this node does not have any attributes set.</summary>
/// <param name="rule">The rule.</param>
/// <param name="operation">The operation.</param>
/// <returns></returns>
public static HtmlSanitizerTagRule NoAttributes(this HtmlSanitizerTagRule rule, SanitizerOperation operation)
{
rule.NoAttributesOperation = operation;
return(rule);
}
