public override void MergeNodes([NotNull] XmlNode target, [NotNull] IXmlElement patch, [NotNull] XmlPatchNamespaces ns)
{
Assert.ArgumentNotNull(target, "target");
Assert.ArgumentNotNull(patch, "patch");
Assert.ArgumentNotNull(ns, "ns");
if (target.NamespaceURI != patch.NamespaceURI || target.LocalName != patch.LocalName)
{
return;
}
var exit = false;
foreach (var attribute in patch.GetAttributes())
{
if (exit)
{
continue;
}
if (attribute.NamespaceURI == RoleNamespace && !RoleConfigurationHelper.ProcessRolesNamespace(attribute))
{
// we need to finish enumerating attributes to avoid reader problem
exit = true;
}
}
if (exit)
{
foreach (var node in patch.GetChildren())
{
// we need to get children to avoid reader problem
}
return;
}
base.MergeNodes(target, patch, ns);
}
protected override void MergeChildren(XmlNode target, IXmlElement patch, XmlPatchNamespaces ns, bool targetWasInserted)
{
Assert.ArgumentNotNull(target, "target");
Assert.ArgumentNotNull(patch, "patch");
Assert.ArgumentNotNull(ns, "ns");
var exit = false;
string savedComment = null;
var pendingOperations = new Stack <InsertOperation>();
// copy child nodes
foreach (IXmlElement node in patch.GetChildren())
{
if (exit)
{
continue;
}
if (node.NodeType == XmlNodeType.Text)
{
target.InnerText = node.Value;
continue;
}
if (node.NodeType == XmlNodeType.Comment)
{
savedComment = node.Value;
continue;
}
if (node.NodeType != XmlNodeType.Element)
{
continue;
}
if (node.NamespaceURI == ns.PatchNamespace)
{
ProcessConfigNode(target, node);
continue;
}
var queryAttributes = new List <IXmlNode>();
var setAttributes = new List <IXmlNode>();
InsertOperation operation = null;
foreach (IXmlNode attribute in node.GetAttributes())
{
if (exit)
{
continue;
}
if (attribute.NamespaceURI == RoleNamespace)
{
if (!RoleConfigurationHelper.ProcessRolesNamespace(attribute))
{
// we need to finish enumerating attributes to avoid reader problem
exit = true;
pendingOperations.Clear();
}
continue;
}
if (attribute.NamespaceURI == ns.PatchNamespace)
{
switch (attribute.LocalName)
{
case "b":
case "before":
case "a":
case "after":
case "i":
case "instead":
operation = new InsertOperation
{
Reference = attribute.Value,
Disposition = attribute.LocalName[0]
};
break;
}
continue;
}
if (attribute.NamespaceURI == ns.SetNamespace)
{
setAttributes.Add(new XmlNodeInfo
{
NodeType = attribute.NodeType,
NamespaceURI = string.Empty, // "set" NS translates into an empty NS
LocalName = attribute.LocalName,
Prefix = string.Empty,
Value = attribute.Value
});
continue;
}
if (attribute.Prefix != "xmlns")
{
queryAttributes.Add(new XmlNodeInfo
{
NodeType = attribute.NodeType,
NamespaceURI = attribute.NamespaceURI,
LocalName = attribute.LocalName,
Prefix = attribute.Prefix,
Value = attribute.Value
});
}
}
if (exit)
{
continue;
}
var nsManager = new XmlNamespaceManager(new NameTable());
var predicateBuilder = new StringBuilder();
var added = false;
foreach (var a in queryAttributes)
{
if (added)
{
predicateBuilder.Append(" and ");
}
if (a.Prefix != null && string.IsNullOrEmpty(nsManager.LookupPrefix(a.Prefix)))
{
nsManager.AddNamespace(a.Prefix, a.NamespaceURI);
}
predicateBuilder.Append("@" + MakeName(a.Prefix, a.LocalName) + "=\"" + a.Value + "\"");
added = true;
}
if (node.Prefix != null && string.IsNullOrEmpty(nsManager.LookupPrefix(node.Prefix)))
{
nsManager.AddNamespace(node.Prefix, node.NamespaceURI);
}
XmlNode targetChild = null;
bool created = false;
if (!targetWasInserted)
{
string predicate = MakeName(node.Prefix, node.LocalName);
var expression = predicateBuilder.ToString();
if (expression.Length > 0)
{
predicate = predicate + "[" + expression + "]";
}
targetChild = target.SelectSingleNode(predicate, nsManager);
}
if (targetChild == null)
{
Assert.IsNotNull(target.OwnerDocument, "document");
targetChild = target.OwnerDocument.CreateElement(MakeName(node.Prefix, node.LocalName), node.NamespaceURI);
created = true;
if (!InsertChild(target, targetChild, operation) && operation != null)
{
operation.Node = targetChild;
pendingOperations.Push(operation);
}
AssignAttributes(targetChild, queryAttributes);
}
else if (operation != null)
{
if (!InsertChild(target, targetChild, operation))
{
operation.Node = targetChild;
pendingOperations.Push(operation);
}
}
if (savedComment != null)
{
Assert.IsNotNull(targetChild.OwnerDocument, "document");
XmlComment comment = targetChild.OwnerDocument.CreateComment(savedComment);
Assert.IsNotNull(targetChild.ParentNode, "parent");
targetChild.ParentNode.InsertBefore(comment, targetChild);
savedComment = null;
}
AssignAttributes(targetChild, setAttributes);
MergeChildren(targetChild, node, ns, /*targetWasInserted = */ created);
if ((created || setAttributes.Any()) && !targetWasInserted)
{
AssignSource(targetChild, node, ns);
}
}
while (pendingOperations.Count > 0)
{
InsertOperation operation = pendingOperations.Pop();
Assert.IsNotNull(operation.Node.ParentNode, "parent");
InsertChild(operation.Node.ParentNode, operation.Node, operation);
}
}