/// <summary>
/// Conditionally removes a node from a document at specified node path.
/// If <paramref name="comparedNode" /> is provided, the node also has to
/// be equal to this to be removed.
/// </summary>
/// <param name="doc">The document to remove from</param>
/// <param name="nodePath">The path of the node to remove</param>
/// <param name="comparedNode">Node to compare with before removing. Can be null.</param>
/// <returns>True if node was removed, false if not found or not equal to comparedNode.</returns>
public static bool TryRemove(this XDocument doc, XmlNodePath nodePath, XNode comparedNode = null)
{
XNode removed;
nodePath.TryFind(doc, out removed);
if (removed == null || comparedNode != null && !comparedNode.DeepEquals(removed))
{
return(false);
}
removed.Remove();
return(true);
}
internal static bool TryAddAttribute(XDocument doc, XmlNodePath elementPath, XName key, string value)
{
XElement element;
if (!elementPath.TryFind(doc, out element))
{
return(false);
}
// Fail if attribute already exists
if (element.Attribute(key) != null)
{
return(false);
}
// TODO: Think about attribute index?
element.Add(new XAttribute(key, value));
return(true);
}
internal static bool TryRemoveAttribute(XDocument doc, XmlNodePath elementPath, XName key, string value)
{
XElement element;
if (!elementPath.TryFind(doc, out element))
{
return(false);
}
// Fail if attribute already exists
var attribute = element.Attribute(key);
if (attribute == null || attribute.Value != value)
{
return(false);
}
attribute.Remove();
// TODO: Think about attribute index?
return(true);
}
