private void ApplyDiffgram(XmlNode diffgramParent, XmlDiffViewParentNode sourceParent)
{
sourceParent.CreateSourceNodesIndex();
XmlDiffViewNode currentPosition = null;
var enumerator = diffgramParent.ChildNodes.GetEnumerator();
while (enumerator.MoveNext())
{
if (((XmlNode)enumerator.Current).NodeType != XmlNodeType.Comment)
{
if (!(enumerator.Current is XmlElement))
{
throw new Exception("Invalid node in diffgram.");
}
var current = enumerator.Current as XmlElement;
if (current.NamespaceURI != "http://schemas.microsoft.com/xmltools/2002/xmldiff")
{
throw new Exception("Invalid element in diffgram.");
}
var attribute1 = current.GetAttribute("match");
XmlDiffPathNodeList matchNodes = null;
if (attribute1 != string.Empty)
{
matchNodes = XmlDiffPath.SelectNodes(this._doc, sourceParent, attribute1);
}
switch (current.LocalName)
{
case "node":
if (matchNodes.Count != 1)
{
throw new Exception("The 'match' attribute of 'node' element must select a single node.");
}
matchNodes.MoveNext();
if (current.ChildNodes.Count > 0)
{
this.ApplyDiffgram(current, (XmlDiffViewParentNode)matchNodes.Current);
}
currentPosition = matchNodes.Current;
continue;
case "add":
if (attribute1 != string.Empty)
{
this.OnAddMatch(current, matchNodes, sourceParent, ref currentPosition);
continue;
}
var attribute2 = current.GetAttribute("type");
if (attribute2 != string.Empty)
{
this.OnAddNode(current, attribute2, sourceParent, ref currentPosition);
continue;
}
this.OnAddFragment(current, sourceParent, ref currentPosition);
continue;
case "remove":
this.OnRemove(current, matchNodes, sourceParent, ref currentPosition);
continue;
case "change":
this.OnChange(current, matchNodes, sourceParent, ref currentPosition);
continue;
default:
continue;
}
}
}
}
private void ApplyDiffgram(XmlNode diffgramParent, XmlDiffViewParentNode sourceParent)
{
sourceParent.CreateSourceNodesIndex();
XmlDiffViewNode currentPosition = null;
IEnumerator diffgramChildren = diffgramParent.ChildNodes.GetEnumerator();
while (diffgramChildren.MoveNext())
{
XmlNode diffgramNode = (XmlNode)diffgramChildren.Current;
if (diffgramNode.NodeType == XmlNodeType.Comment)
{
continue;
}
XmlElement diffgramElement = diffgramChildren.Current as XmlElement;
if (diffgramElement == null)
{
throw new Exception("Invalid node in diffgram.");
}
if (diffgramElement.NamespaceURI != XmlDiff.NamespaceUri)
{
throw new Exception("Invalid element in diffgram.");
}
string matchAttr = diffgramElement.GetAttribute("match");
XmlDiffPathNodeList matchNodes = null;
if (matchAttr != string.Empty)
{
matchNodes = XmlDiffPath.SelectNodes(_doc, sourceParent, matchAttr);
}
switch (diffgramElement.LocalName)
{
case "node":
if (matchNodes.Count != 1)
{
throw new Exception("The 'match' attribute of 'node' element must select a single node.");
}
matchNodes.MoveNext();
if (diffgramElement.ChildNodes.Count > 0)
{
ApplyDiffgram(diffgramElement, (XmlDiffViewParentNode)matchNodes.Current);
}
currentPosition = matchNodes.Current;
break;
case "add":
if (matchAttr != string.Empty)
{
OnAddMatch(diffgramElement, matchNodes, sourceParent, ref currentPosition);
}
else
{
string typeAttr = diffgramElement.GetAttribute("type");
if (typeAttr != string.Empty)
{
OnAddNode(diffgramElement, typeAttr, sourceParent, ref currentPosition);
}
else
{
OnAddFragment(diffgramElement, sourceParent, ref currentPosition);
}
}
break;
case "remove":
OnRemove(diffgramElement, matchNodes, sourceParent, ref currentPosition);
break;
case "change":
OnChange(diffgramElement, matchNodes, sourceParent, ref currentPosition);
break;
}
}
}