private void AnnotateNode(XmlDiffViewNode node, XmlDiffViewOperation op, int opid, bool bSubtree)
{
node._op = op;
node._opid = opid;
if (node._nodeType == XmlNodeType.Element)
{
XmlDiffViewAttribute attr = ((XmlDiffViewElement)node)._attributes;
while (attr != null)
{
attr._op = op;
attr._opid = opid;
attr = (XmlDiffViewAttribute)attr._nextSibbling;
}
}
if (bSubtree)
{
XmlDiffViewNode childNode = node.FirstChildNode;
while (childNode != null)
{
AnnotateNode(childNode, op, opid, true);
childNode = childNode._nextSibbling;
}
}
}
static XmlDiffPathNodeList SelectAllChildren(XmlDiffViewParentNode parentNode)
{
if (parentNode._childNodes == null)
{
OnNoMatchingNode("*");
return(null);
}
else if (parentNode._childNodes._nextSibbling == null)
{
XmlDiffPathNodeList nodeList = new XmlDiffPathSingleNodeList();
nodeList.AddNode(parentNode._childNodes);
return(nodeList);
}
else
{
XmlDiffPathNodeList nodeList = new XmlDiffPathMultiNodeList();
XmlDiffViewNode childNode = parentNode._childNodes;
while (childNode != null)
{
nodeList.AddNode(childNode);
childNode = childNode._nextSibbling;
}
return(nodeList);
}
}
private void AnnotateNode(
XmlDiffViewNode node,
XmlDiffViewOperation op,
int opid,
bool bSubtree)
{
node._op = op;
node._opid = opid;
if (node._nodeType == XmlNodeType.Element)
{
for (var diffViewAttribute = ((XmlDiffViewElement)node)._attributes; diffViewAttribute != null; diffViewAttribute = (XmlDiffViewAttribute)diffViewAttribute._nextSibbling)
{
diffViewAttribute._op = op;
diffViewAttribute._opid = opid;
}
}
if (!bSubtree)
{
return;
}
for (var node1 = node.FirstChildNode; node1 != null; node1 = node1._nextSibbling)
{
this.AnnotateNode(node1, op, opid, true);
}
}
/// <summary>
/// Inserts a node after the specified node
/// </summary>
/// <param name="newChild">node to insert</param>
/// <param name="referenceChild">node to insert after</param>
/// <param name="sourceNode">This is a baseline node</param>
internal void InsertChildAfter(
XmlDiffViewNode newChild,
XmlDiffViewNode referenceChild,
bool sourceNode)
{
Debug.Assert(newChild != null);
if (referenceChild == null)
{
// head of list.
newChild.NextSibling = this.ChildNodes;
if (this.ChildNodes != null)
{
this.ChildNodes.PreviousSibling = newChild;
}
this.ChildNodes = newChild;
}
else
{
newChild.NextSibling = referenceChild.NextSibling;
newChild.PreviousSibling = referenceChild;
if (referenceChild.NextSibling != null)
{
referenceChild.NextSibling.PreviousSibling = newChild;
}
referenceChild.NextSibling = newChild;
}
if (sourceNode)
{
this.SourceChildNodesCount++;
}
newChild.Parent = this;
}
internal override void AddNode(XmlDiffViewNode node)
{
if (this._node != null)
{
throw new Exception("XmlDiffPathSingleNodeList can contain one node only.");
}
this._node = node;
}
/// <summary>
/// Gets a list of node objects corresponding to
/// the proprietary path reference provided.
/// </summary>
/// <param name="rootNode">The starting node</param>
/// <param name="path">Absolute path reference to node of interest</param>
/// <returns>list of node objects</returns>
private static XmlDiffPathNodeList SelectAbsoluteNodes(
XmlDiffViewParentNode rootNode,
string path)
{
Debug.Assert(path[0] == '/');
int pos = 1;
XmlDiffViewNode node = rootNode;
for (; ;)
{
int startPos = pos;
int nodePos = ReadPosition(path, ref pos);
if (pos == path.Length || path[pos] == '/')
{
if (node.FirstChildNode == null)
{
OnNoMatchingNode(path);
}
XmlDiffViewParentNode parentNode = (XmlDiffViewParentNode)node;
if (nodePos <= 0 || nodePos > parentNode.
SourceChildNodesCount)
{
OnNoMatchingNode(path);
}
node = parentNode.GetSourceChildNode(nodePos - 1);
if (pos == path.Length)
{
XmlDiffPathNodeList list = new
XmlDiffPathSingleNodeList();
list.AddNode(node);
return(list);
}
pos++;
}
else
{
if (path[pos] == '-' || path[pos] == '|')
{
if (node.FirstChildNode == null)
{
OnNoMatchingNode(path);
}
return(SelectChildNodes(
((XmlDiffViewParentNode)node),
path,
startPos));
}
OnInvalidExpression(path);
}
}
}
private void OnRemove(XmlElement diffgramElement, XmlDiffPathNodeList matchNodes,
XmlDiffViewParentNode sourceParent, ref XmlDiffViewNode currentPosition)
{
// opid & descriptor
XmlDiffViewOperation op = XmlDiffViewOperation.Remove;
int opid = 0;
OperationDescriptor opDesc = null;
string opidAttr = diffgramElement.GetAttribute("opid");
if (opidAttr != string.Empty)
{
opid = int.Parse(opidAttr);
opDesc = GetDescriptor(opid);
if (opDesc._type == OperationDescriptor.Type.Move)
{
op = XmlDiffViewOperation.MoveFrom;
}
}
// subtree
string subtreeAttr = diffgramElement.GetAttribute("subtree");
bool bSubtree = (subtreeAttr != "no");
if (!bSubtree)
{
if (matchNodes.Count != 1)
{
throw new Exception("The 'match' attribute of 'remove' element must select a single node when the 'subtree' attribute is specified.");
}
// annotate node
matchNodes.MoveNext();
XmlDiffViewNode node = matchNodes.Current;
AnnotateNode(node, op, opid, false);
if (opid != 0)
{
opDesc._nodeList.AddNode(node);
}
// recurse
ApplyDiffgram(diffgramElement, (XmlDiffViewParentNode)node);
}
else
{
// annotate nodes
matchNodes.Reset();
while (matchNodes.MoveNext())
{
if (opid != 0)
{
opDesc._nodeList.AddNode(matchNodes.Current);
}
AnnotateNode(matchNodes.Current, op, opid, true);
}
}
}
internal void HtmlDrawChildNodes(XmlWriter writer, int indent)
{
XmlDiffViewNode curChild = _childNodes;
while (curChild != null)
{
curChild.DrawHtml(writer, indent);
curChild = curChild._nextSibbling;
}
}
private void OnAddMatch(XmlElement diffgramElement, XmlDiffPathNodeList matchNodes, XmlDiffViewParentNode sourceParent,
ref XmlDiffViewNode currentPosition)
{
string opidAttr = diffgramElement.GetAttribute("opid");
if (opidAttr == string.Empty)
{
throw new Exception("Missing opid attribute.");
}
// opid & descriptor
int opid = int.Parse(opidAttr);
OperationDescriptor opDesc = GetDescriptor(opid);
string subtreeAttr = diffgramElement.GetAttribute("subtree");
bool bSubtree = (subtreeAttr != "no");
// move single node without subtree
if (!bSubtree)
{
if (matchNodes.Count != 1)
{
throw new Exception("The 'match' attribute of 'add' element must select a single node when the 'subtree' attribute is specified.");
}
// clone node
matchNodes.MoveNext();
XmlDiffViewNode newNode = matchNodes.Current.Clone(false);
AnnotateNode(newNode, XmlDiffViewOperation.MoveTo, opid, true);
opDesc._nodeList.AddNode(newNode);
// insert in tree
sourceParent.InsertChildAfter(newNode, currentPosition, false);
currentPosition = newNode;
// recurse
ApplyDiffgram(diffgramElement, (XmlDiffViewParentNode)newNode);
}
// move subtree
else
{
matchNodes.Reset();
while (matchNodes.MoveNext())
{
XmlDiffViewNode newNode = matchNodes.Current.Clone(true);
AnnotateNode(newNode, XmlDiffViewOperation.MoveTo, opid, true);
opDesc._nodeList.AddNode(newNode);
sourceParent.InsertChildAfter(newNode, currentPosition, false);
currentPosition = newNode;
}
}
}
private XmlDiffViewNode ImportNode(XmlNode node)
{
XmlDiffViewNode newNode = null;
switch (node.NodeType)
{
case XmlNodeType.Element:
XmlElement el = (XmlElement)node;
XmlDiffViewElement newElement = new XmlDiffViewElement(el.LocalName, el.Prefix, el.NamespaceURI, _bIgnorePrefixes);
// attributes
IEnumerator attributes = node.Attributes.GetEnumerator();
XmlDiffViewAttribute lastNewAttr = null;
while (attributes.MoveNext())
{
XmlAttribute at = (XmlAttribute)attributes.Current;
XmlDiffViewAttribute newAttr = new XmlDiffViewAttribute(at.LocalName, at.Prefix, at.NamespaceURI, at.Value);
newElement.InsertAttributeAfter(newAttr, lastNewAttr);
lastNewAttr = newAttr;
}
// children
IEnumerator childNodes = node.ChildNodes.GetEnumerator();
XmlDiffViewNode lastNewChildNode = null;
while (childNodes.MoveNext())
{
XmlDiffViewNode newChildNode = ImportNode((XmlNode)childNodes.Current);
newElement.InsertChildAfter(newChildNode, lastNewChildNode, false);
lastNewChildNode = newChildNode;
}
newNode = newElement;
break;
case XmlNodeType.Text:
case XmlNodeType.CDATA:
case XmlNodeType.Comment:
newNode = new XmlDiffViewCharData(node.Value, node.NodeType);
break;
case XmlNodeType.ProcessingInstruction:
newNode = new XmlDiffViewPI(node.Name, node.Value);
break;
case XmlNodeType.EntityReference:
newNode = new XmlDiffViewER(node.Name);
break;
default:
Debug.Assert(false, "Invalid node type.");
break;
}
Debug.Assert(newNode != null);
return(newNode);
}
private void OnAddFragment(XmlElement diffgramElement, XmlDiffViewParentNode sourceParent, ref XmlDiffViewNode currentPosition)
{
IEnumerator childNodes = diffgramElement.ChildNodes.GetEnumerator();
while (childNodes.MoveNext())
{
XmlDiffViewNode newChildNode = ImportNode((XmlNode)childNodes.Current);
sourceParent.InsertChildAfter(newChildNode, currentPosition, false);
currentPosition = newChildNode;
AnnotateNode(newChildNode, XmlDiffViewOperation.Add, 0, true);
}
}
private void OnAddFragment(
XmlElement diffgramElement,
XmlDiffViewParentNode sourceParent,
ref XmlDiffViewNode currentPosition)
{
foreach (XmlNode childNode in diffgramElement.ChildNodes)
{
var xmlDiffViewNode = this.ImportNode(childNode);
sourceParent.InsertChildAfter(xmlDiffViewNode, currentPosition, false);
currentPosition = xmlDiffViewNode;
this.AnnotateNode(xmlDiffViewNode, XmlDiffViewOperation.Add, 0, true);
}
}
/// <summary>
/// Generates output data in text form
/// </summary>
/// <param name="writer">output stream</param>
/// <param name="indent">number of indentations</param>
internal void TextDrawChildNodes(
TextWriter writer,
int indent)
{
indent += Indent.IncrementSize;
XmlDiffViewNode curChild = this.ChildNodes;
while (curChild != null)
{
curChild.DrawText(writer, indent);
curChild = curChild.NextSibbling;
}
}
private XmlDiffViewNode ImportNode(XmlNode node)
{
XmlDiffViewNode xmlDiffViewNode = null;
switch (node.NodeType)
{
case XmlNodeType.Element:
var xmlElement = (XmlElement)node;
var xmlDiffViewElement = new XmlDiffViewElement(xmlElement.LocalName, xmlElement.Prefix, xmlElement.NamespaceURI, this._bIgnorePrefixes);
var enumerator1 = node.Attributes.GetEnumerator();
XmlDiffViewAttribute refAttr = null;
while (enumerator1.MoveNext())
{
var current = (XmlAttribute)enumerator1.Current;
var newAttr = new XmlDiffViewAttribute(current.LocalName, current.Prefix, current.NamespaceURI, current.Value);
xmlDiffViewElement.InsertAttributeAfter(newAttr, refAttr);
refAttr = newAttr;
}
var enumerator2 = node.ChildNodes.GetEnumerator();
XmlDiffViewNode referenceChild = null;
while (enumerator2.MoveNext())
{
var newChild = this.ImportNode((XmlNode)enumerator2.Current);
xmlDiffViewElement.InsertChildAfter(newChild, referenceChild, false);
referenceChild = newChild;
}
xmlDiffViewNode = xmlDiffViewElement;
break;
case XmlNodeType.Text:
case XmlNodeType.CDATA:
case XmlNodeType.Comment:
xmlDiffViewNode = new XmlDiffViewCharData(node.Value, node.NodeType);
break;
case XmlNodeType.EntityReference:
xmlDiffViewNode = new XmlDiffViewER(node.Name);
break;
case XmlNodeType.ProcessingInstruction:
xmlDiffViewNode = new XmlDiffViewPI(node.Name, node.Value);
break;
default:
Debug.Assert(false, "Invalid node type.");
break;
}
Debug.Assert(xmlDiffViewNode != null);
return(xmlDiffViewNode);
}
private void OnRemove(
XmlElement diffgramElement,
XmlDiffPathNodeList matchNodes,
XmlDiffViewParentNode sourceParent,
ref XmlDiffViewNode currentPosition)
{
var op = XmlDiffViewOperation.Remove;
var opid = 0;
OperationDescriptor operationDescriptor = null;
var attribute = diffgramElement.GetAttribute("opid");
if (attribute != string.Empty)
{
opid = int.Parse(attribute);
operationDescriptor = this.GetDescriptor(opid);
if (operationDescriptor._type == OperationDescriptor.Type.Move)
{
op = XmlDiffViewOperation.MoveFrom;
}
}
if (!(diffgramElement.GetAttribute("subtree") != "no"))
{
if (matchNodes.Count != 1)
{
throw new Exception("The 'match' attribute of 'remove' element must select a single node when the 'subtree' attribute is specified.");
}
matchNodes.MoveNext();
var current = matchNodes.Current;
this.AnnotateNode(current, op, opid, false);
if (opid != 0)
{
operationDescriptor._nodeList.AddNode(current);
}
this.ApplyDiffgram(diffgramElement, (XmlDiffViewParentNode)current);
}
else
{
matchNodes.Reset();
while (matchNodes.MoveNext())
{
if (opid != 0)
{
operationDescriptor._nodeList.AddNode(matchNodes.Current);
}
this.AnnotateNode(matchNodes.Current, op, opid, true);
}
}
}
internal override void AddNode(XmlDiffViewNode node)
{
if (this._lastChunk == null)
{
this._chunks = new ListChunk();
this._lastChunk = this._chunks;
this._currentChunk = this._chunks;
}
else if (this._lastChunk._count == 10)
{
this._lastChunk._next = new ListChunk();
this._lastChunk = this._lastChunk._next;
}
this._lastChunk.AddNode(node);
++this._count;
}
/// <summary>
/// Adds a node to the current list of data.
/// </summary>
/// <param name="node">Node object to add</param>
public override void AddNode(XmlDiffViewNode node)
{
if (this.lastChunk == null)
{
this.chunks = new ListChunk();
this.lastChunk = this.chunks;
this.currentChunk = this.chunks;
}
else if (this.lastChunk.Count == ListChunk.ChunkSize)
{
this.lastChunk.Next = new ListChunk();
this.lastChunk = this.lastChunk.Next;
}
this.lastChunk.AddNode(node);
this.count++;
}
internal override void AddNode(XmlDiffViewNode node)
{
if (_lastChunk == null)
{
_chunks = new ListChunk();
_lastChunk = _chunks;
_currentChunk = _chunks;
}
else if (_lastChunk._count == ListChunk.ChunkSize)
{
_lastChunk._next = new ListChunk();
_lastChunk = _lastChunk._next;
}
_lastChunk.AddNode(node);
_count++;
}
internal void CreateSourceNodesIndex()
{
if (_sourceChildNodesIndex != null || _sourceChildNodesCount == 0)
{
return;
}
_sourceChildNodesIndex = new XmlDiffViewNode[_sourceChildNodesCount];
XmlDiffViewNode curChild = _childNodes;
for (int i = 0; i < _sourceChildNodesCount; i++, curChild = curChild._nextSibbling)
{
Debug.Assert(curChild != null);
_sourceChildNodesIndex[i] = curChild;
}
Debug.Assert(curChild == null);
}
/// <summary>
/// Creates a complete copy of the current node.
/// </summary>
/// <param name="deep">has child nodes</param>
/// <returns>A copy of the current node</returns>
internal override XmlDiffViewNode Clone(bool deep)
{
XmlDiffViewElement newElement = new XmlDiffViewElement(
this.LocalName,
this.Prefix,
this.NamespaceUri,
this.ignorePrefixes);
// attributes
{
XmlDiffViewAttribute curAttr = this.Attributes;
XmlDiffViewAttribute lastNewAtt = null;
while (curAttr != null)
{
XmlDiffViewAttribute newAttr =
(XmlDiffViewAttribute)curAttr.Clone(true);
newElement.InsertAttributeAfter(newAttr, lastNewAtt);
lastNewAtt = newAttr;
curAttr = (XmlDiffViewAttribute)curAttr.NextSibbling;
}
}
if (!deep)
{
return(newElement);
}
// child nodes
{
XmlDiffViewNode curChild = ChildNodes;
XmlDiffViewNode lastNewChild = null;
while (curChild != null)
{
XmlDiffViewNode newChild = curChild.Clone(true);
newElement.InsertChildAfter(newChild, lastNewChild, false);
lastNewChild = newChild;
curChild = curChild.NextSibbling;
}
}
return(newElement);
}
/// <summary>
/// Creates an indexed collection of child nodes.
/// </summary>
internal void CreateSourceNodesIndex()
{
if (this.SourceChildNodesIndex != null ||
this.SourceChildNodesCount == 0)
{
return;
}
this.SourceChildNodesIndex = new
XmlDiffViewNode[this.SourceChildNodesCount];
XmlDiffViewNode curChild = this.ChildNodes;
for (int i = 0; i < this.SourceChildNodesCount; i++, curChild = curChild.NextSibbling)
{
Debug.Assert(curChild != null);
this.SourceChildNodesIndex[i] = curChild;
}
Debug.Assert(curChild == null);
}
internal void InsertChildAfter(XmlDiffViewNode newChild, XmlDiffViewNode referenceChild, bool bSourceNode)
{
Debug.Assert(newChild != null);
if (referenceChild == null)
{
newChild._nextSibbling = _childNodes;
_childNodes = newChild;
}
else
{
newChild._nextSibbling = referenceChild._nextSibbling;
referenceChild._nextSibbling = newChild;
}
if (bSourceNode)
{
_sourceChildNodesCount++;
}
newChild._parent = this;
}
private void OnAddMatch(
XmlElement diffgramElement,
XmlDiffPathNodeList matchNodes,
XmlDiffViewParentNode sourceParent,
ref XmlDiffViewNode currentPosition)
{
var attribute = diffgramElement.GetAttribute("opid");
if (attribute == string.Empty)
{
throw new Exception("Missing opid attribute.");
}
var opid = int.Parse(attribute);
var descriptor = this.GetDescriptor(opid);
if (!(diffgramElement.GetAttribute("subtree") != "no"))
{
if (matchNodes.Count != 1)
{
throw new Exception("The 'match' attribute of 'add' element must select a single node when the 'subtree' attribute is specified.");
}
matchNodes.MoveNext();
var xmlDiffViewNode = matchNodes.Current.Clone(false);
this.AnnotateNode(xmlDiffViewNode, XmlDiffViewOperation.MoveTo, opid, true);
descriptor._nodeList.AddNode(xmlDiffViewNode);
sourceParent.InsertChildAfter(xmlDiffViewNode, currentPosition, false);
currentPosition = xmlDiffViewNode;
this.ApplyDiffgram(diffgramElement, (XmlDiffViewParentNode)xmlDiffViewNode);
}
else
{
matchNodes.Reset();
while (matchNodes.MoveNext())
{
var xmlDiffViewNode = matchNodes.Current.Clone(true);
this.AnnotateNode(xmlDiffViewNode, XmlDiffViewOperation.MoveTo, opid, true);
descriptor._nodeList.AddNode(xmlDiffViewNode);
sourceParent.InsertChildAfter(xmlDiffViewNode, currentPosition, false);
currentPosition = xmlDiffViewNode;
}
}
}
/// <summary>
/// Inserts a node after the specified node
/// </summary>
/// <param name="newChild">node to insert</param>
/// <param name="referenceChild">node to insert after</param>
/// <param name="sourceNode">This is a baseline node</param>
internal void InsertChildAfter(
XmlDiffViewNode newChild,
XmlDiffViewNode referenceChild,
bool sourceNode)
{
Debug.Assert(newChild != null);
if (referenceChild == null)
{
newChild.NextSibbling = this.ChildNodes;
this.ChildNodes = newChild;
}
else
{
newChild.NextSibbling = referenceChild.NextSibbling;
referenceChild.NextSibbling = newChild;
}
if (sourceNode)
{
this.SourceChildNodesCount++;
}
newChild.Parent = this;
}
internal override XmlDiffViewNode Clone(bool bDeep)
{
XmlDiffViewElement newElement = new XmlDiffViewElement(_localName, _prefix, _ns, _ignorePrefixes);
// attributes
{
XmlDiffViewAttribute curAttr = _attributes;
XmlDiffViewAttribute lastNewAtt = null;
while (curAttr != null)
{
XmlDiffViewAttribute newAttr = (XmlDiffViewAttribute)curAttr.Clone(true);
newElement.InsertAttributeAfter(newAttr, lastNewAtt);
lastNewAtt = newAttr;
curAttr = (XmlDiffViewAttribute)curAttr._nextSibbling;
}
}
if (!bDeep)
{
return(newElement);
}
// child nodes
{
XmlDiffViewNode curChild = _childNodes;
XmlDiffViewNode lastNewChild = null;
while (curChild != null)
{
XmlDiffViewNode newChild = curChild.Clone(true);
newElement.InsertChildAfter(newChild, lastNewChild, false);
lastNewChild = newChild;
curChild = curChild._nextSibbling;
}
}
return(newElement);
}
private void OnAddNode(
XmlElement diffgramElement,
string nodeTypeAttr,
XmlDiffViewParentNode sourceParent,
ref XmlDiffViewNode currentPosition)
{
var nodeType = (XmlNodeType)int.Parse(nodeTypeAttr);
var attribute1 = diffgramElement.GetAttribute("name");
var attribute2 = diffgramElement.GetAttribute("prefix");
var attribute3 = diffgramElement.GetAttribute("ns");
var attribute4 = diffgramElement.GetAttribute("opid");
var num = attribute4 == string.Empty ? 0 : int.Parse(attribute4);
if (nodeType == XmlNodeType.Attribute)
{
Debug.Assert(attribute1 != string.Empty);
var newAttr = new XmlDiffViewAttribute(attribute1, attribute2, attribute3, diffgramElement.InnerText);
newAttr._op = XmlDiffViewOperation.Add;
newAttr._opid = num;
((XmlDiffViewElement)sourceParent).InsertAttributeAfter(newAttr, null);
}
else
{
XmlDiffViewNode newChild = null;
switch (nodeType)
{
case XmlNodeType.Element:
Debug.Assert(attribute1 != string.Empty);
newChild = new XmlDiffViewElement(attribute1, attribute2, attribute3, this._bIgnorePrefixes);
this.ApplyDiffgram(diffgramElement, (XmlDiffViewParentNode)newChild);
break;
case XmlNodeType.Text:
case XmlNodeType.CDATA:
case XmlNodeType.Comment:
Debug.Assert(diffgramElement.InnerText != string.Empty);
newChild = new XmlDiffViewCharData(diffgramElement.InnerText, nodeType);
break;
case XmlNodeType.EntityReference:
Debug.Assert(attribute1 != string.Empty);
newChild = new XmlDiffViewER(attribute1);
break;
case XmlNodeType.ProcessingInstruction:
Debug.Assert(diffgramElement.InnerText != string.Empty);
Debug.Assert(attribute1 != string.Empty);
newChild = new XmlDiffViewPI(attribute1, diffgramElement.InnerText);
break;
case XmlNodeType.DocumentType:
newChild = new XmlDiffViewDocumentType(diffgramElement.GetAttribute("name"), diffgramElement.GetAttribute("publicId"), diffgramElement.GetAttribute("systemId"), diffgramElement.InnerText);
break;
case XmlNodeType.XmlDeclaration:
Debug.Assert(diffgramElement.InnerText != string.Empty);
newChild = new XmlDiffViewXmlDeclaration(diffgramElement.InnerText);
break;
default:
Debug.Assert(false, "Invalid node type.");
break;
}
Debug.Assert(newChild != null);
newChild._op = XmlDiffViewOperation.Add;
newChild._opid = num;
sourceParent.InsertChildAfter(newChild, currentPosition, false);
currentPosition = newChild;
}
}
/// <summary>
/// Add a node to the list. This method should only be
/// called once otherwise an exception will be raised.
/// </summary>
/// <param name="node">The node to add</param>
public override void AddNode(XmlDiffViewNode node)
{
if (this.node != null)
{
throw new Exception(
"XmlDiffPathSingleNodeList can contain one node only.");
}
this.node = node;
}
internal override void AddNode( XmlDiffViewNode node )
{
if ( _node != null )
throw new Exception( "XmlDiffPathSingleNodeList can contain one node only." );
_node = node;
}
/// <summary>
/// Mark the nodes (and attributes) with the type of data change
/// </summary>
/// <param name="node">the node to annotate</param>
/// <param name="op">the type of data change</param>
/// <param name="opid">the operation identification number</param>
/// <param name="subtree">the node's subtree</param>
private void AnnotateNode(
XmlDiffViewNode node,
XmlDiffViewOperation op,
int opid,
bool subtree)
{
node.Operation = op;
node.OperationId = opid;
if (node.NodeType == XmlNodeType.Element)
{
XmlDiffViewAttribute attr = (
(XmlDiffViewElement)node).Attributes;
while (attr != null)
{
attr.Operation = op;
attr.OperationId = opid;
attr = (XmlDiffViewAttribute)attr.NextSibbling;
}
}
if (subtree)
{
XmlDiffViewNode childNode = node.FirstChildNode;
while (childNode != null)
{
this.AnnotateNode(childNode, op, opid, true);
childNode = childNode.NextSibbling;
}
}
}
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 OnChange(
XmlElement diffgramElement,
XmlDiffPathNodeList matchNodes,
XmlDiffViewParentNode sourceParent,
ref XmlDiffViewNode currentPosition)
{
Debug.Assert(matchNodes.Count == 1);
matchNodes.Reset();
matchNodes.MoveNext();
var current = matchNodes.Current;
if (current._nodeType != XmlNodeType.Attribute)
{
currentPosition = current;
}
var changeInfo = new XmlDiffViewNode.ChangeInfo();
var str1 = diffgramElement.HasAttribute("name") ? diffgramElement.GetAttribute("name") : null;
var str2 = diffgramElement.HasAttribute("prefix") ? diffgramElement.GetAttribute("prefix") : null;
var str3 = diffgramElement.HasAttribute("ns") ? diffgramElement.GetAttribute("ns") : null;
switch (current._nodeType)
{
case XmlNodeType.Element:
changeInfo._localName = str1 == null ? ((XmlDiffViewElement)current)._localName : str1;
changeInfo._prefix = str2 == null ? ((XmlDiffViewElement)current)._prefix : str2;
changeInfo._ns = str3 == null ? ((XmlDiffViewElement)current)._ns : str3;
break;
case XmlNodeType.Attribute:
var innerText = diffgramElement.InnerText;
if (str1 == string.Empty && str2 == string.Empty && innerText == string.Empty)
{
return;
}
changeInfo._localName = str1 == null ? ((XmlDiffViewAttribute)current)._localName : str1;
changeInfo._prefix = str2 == null ? ((XmlDiffViewAttribute)current)._prefix : str2;
changeInfo._ns = str3 == null ? ((XmlDiffViewAttribute)current)._ns : str3;
changeInfo._value = diffgramElement.InnerText;
break;
case XmlNodeType.Text:
case XmlNodeType.CDATA:
Debug.Assert(diffgramElement.FirstChild != null);
changeInfo._value = diffgramElement.InnerText;
break;
case XmlNodeType.EntityReference:
Debug.Assert(str1 != null);
changeInfo._localName = str1;
break;
case XmlNodeType.ProcessingInstruction:
if (str1 == null)
{
Debug.Assert(diffgramElement.FirstChild != null);
Debug.Assert(diffgramElement.FirstChild.NodeType == XmlNodeType.ProcessingInstruction);
changeInfo._localName = diffgramElement.FirstChild.Name;
changeInfo._value = diffgramElement.FirstChild.Value;
break;
}
changeInfo._localName = str1;
changeInfo._value = ((XmlDiffViewCharData)current)._value;
break;
case XmlNodeType.Comment:
Debug.Assert(diffgramElement.FirstChild != null);
Debug.Assert(diffgramElement.FirstChild.NodeType == XmlNodeType.Comment);
changeInfo._value = diffgramElement.FirstChild.Value;
break;
case XmlNodeType.DocumentType:
changeInfo._localName = str1 == null ? ((XmlDiffViewDocumentType)current)._name : str1;
changeInfo._prefix = !diffgramElement.HasAttribute("publicId") ? ((XmlDiffViewDocumentType)current)._publicId : diffgramElement.GetAttribute("publicId");
changeInfo._ns = !diffgramElement.HasAttribute("systemId") ? ((XmlDiffViewDocumentType)current)._systemId : diffgramElement.GetAttribute("systemId");
changeInfo._value = diffgramElement.FirstChild == null ? ((XmlDiffViewDocumentType)current)._subset : diffgramElement.InnerText;
break;
case XmlNodeType.XmlDeclaration:
Debug.Assert(diffgramElement.FirstChild != null);
changeInfo._value = diffgramElement.InnerText;
break;
default:
Debug.Assert(false, "Invalid node type.");
break;
}
current._changeInfo = changeInfo;
current._op = XmlDiffViewOperation.Change;
var attribute = diffgramElement.GetAttribute("opid");
if (attribute != string.Empty)
{
current._opid = int.Parse(attribute);
}
if (current._nodeType != XmlNodeType.Element || diffgramElement.FirstChild == null)
{
return;
}
this.ApplyDiffgram(diffgramElement, (XmlDiffViewParentNode)current);
}
public void Reset()
{
this._curLastChild = null;
this._curLastAttribute = null;
}
/// <summary>
/// Relocate matched data.
/// </summary>
/// <param name="diffgramElement">node in diffgram</param>
/// <param name="matchNodes">the path to the baseline node</param>
/// <param name="sourceParent">the baseline parent node</param>
/// <param name="currentPosition">the resulting node</param>
private void OnAddMatch(
XmlElement diffgramElement,
XmlDiffPathNodeList matchNodes,
XmlDiffViewParentNode sourceParent,
ref XmlDiffViewNode currentPosition)
{
string opidAttr = diffgramElement.GetAttribute("opid");
if (opidAttr == string.Empty)
{
throw new Exception("Missing opid attribute.");
}
// opid & descriptor
int opid = ParseOpId(opidAttr);
OperationDescriptor operationDesc = this.GetDescriptor(opid);
string subtreeAttr = diffgramElement.GetAttribute("subtree");
bool subtree = (subtreeAttr != "no");
// move single node without subtree
if (!subtree)
{
if (matchNodes.Count != 1)
{
throw new Exception("The 'match' attribute of 'add' " +
"element must select a single node when the 'subtree' " +
"attribute is specified.");
}
// clone node
matchNodes.MoveNext();
XmlDiffViewNode newNode = matchNodes.Current.Clone(false);
this.AnnotateNode(
newNode,
XmlDiffViewOperation.MoveTo,
opid,
true);
operationDesc.NodeList.AddNode(newNode);
// insert in tree
sourceParent.InsertChildAfter(newNode, currentPosition, false);
currentPosition = newNode;
// recurse
this.ApplyDiffgram(
diffgramElement,
(XmlDiffViewParentNode)newNode);
}
else
{
// move subtree
matchNodes.Reset();
while (matchNodes.MoveNext())
{
XmlDiffViewNode newNode = matchNodes.Current.Clone(true);
this.AnnotateNode(
newNode,
XmlDiffViewOperation.MoveTo,
opid,
true);
operationDesc.NodeList.AddNode(newNode);
sourceParent.InsertChildAfter(newNode, currentPosition, false);
currentPosition = newNode;
}
}
}
/// <summary>
/// Add the new fragment
/// </summary>
/// <param name="diffgramElement">node in diffgram</param>
/// <param name="sourceParent">the baseline parent node</param>
/// <param name="currentPosition">the resulting node</param>
private void OnAddFragment(
XmlElement diffgramElement,
XmlDiffViewParentNode sourceParent,
ref XmlDiffViewNode currentPosition)
{
int opid = NextOperationId;
IEnumerator childNodes =
diffgramElement.ChildNodes.GetEnumerator();
while (childNodes.MoveNext())
{
XmlDiffViewNode newChildNode = this.ImportNode(
(XmlNode)childNodes.Current);
sourceParent.InsertChildAfter(
newChildNode,
currentPosition,
false);
currentPosition = newChildNode;
this.AnnotateNode(
newChildNode,
XmlDiffViewOperation.Add,
opid,
true);
}
}
/// <summary>
/// Add the new node or attribute
/// </summary>
/// <param name="diffgramElement">node in diffgram</param>
/// <param name="nodeTypeAttr">Whether this is an Attribute</param>
/// <param name="sourceParent">the baseline parent node</param>
/// <param name="currentPosition">the resulting node</param>
private void OnAddNode(
XmlElement diffgramElement,
string nodeTypeAttr,
XmlDiffViewParentNode sourceParent,
ref XmlDiffViewNode currentPosition)
{
XmlNodeType nodeType = (XmlNodeType)
int.Parse(nodeTypeAttr);
string name = diffgramElement.GetAttribute("name");
string prefix = diffgramElement.GetAttribute("prefix");
string ns = diffgramElement.GetAttribute("ns");
string opidAttr = diffgramElement.GetAttribute("opid");
int opid = ParseOpId(opidAttr);
if (nodeType == XmlNodeType.Attribute)
{
Debug.Assert(name != string.Empty);
XmlDiffViewAttribute newAttr = new XmlDiffViewAttribute(
name,
prefix,
ns,
diffgramElement.InnerText);
newAttr.Operation = XmlDiffViewOperation.Add;
newAttr.OperationId = opid;
((XmlDiffViewElement)
sourceParent).InsertAttributeAfter(newAttr, null);
}
else
{
XmlDiffViewNode newNode = null;
switch (nodeType)
{
case XmlNodeType.Element:
Debug.Assert(name != string.Empty);
newNode = new XmlDiffViewElement(
name,
prefix,
ns,
this.ignorePrefixes);
this.ApplyDiffgram(
diffgramElement,
(XmlDiffViewParentNode)newNode);
break;
case XmlNodeType.Text:
case XmlNodeType.CDATA:
case XmlNodeType.Comment:
Debug.Assert(diffgramElement.InnerText != string.Empty);
newNode = new XmlDiffViewCharData(
diffgramElement.InnerText,
nodeType);
break;
case XmlNodeType.ProcessingInstruction:
Debug.Assert(diffgramElement.InnerText != string.Empty);
Debug.Assert(name != string.Empty);
newNode = new XmlDiffViewPI(
name,
diffgramElement.InnerText);
break;
case XmlNodeType.EntityReference:
Debug.Assert(name != string.Empty);
Debug.Assert(false, "XmlDiffViewER was thought to be dead code");
//// newNode = new XmlDiffViewER(name);
break;
case XmlNodeType.XmlDeclaration:
Debug.Assert(diffgramElement.InnerText != string.Empty);
newNode = new XmlDiffViewXmlDeclaration(
diffgramElement.InnerText);
break;
case XmlNodeType.DocumentType:
newNode = new XmlDiffViewDocumentType(
diffgramElement.GetAttribute("name"),
diffgramElement.GetAttribute("publicId"),
diffgramElement.GetAttribute("systemId"),
diffgramElement.InnerText);
break;
default:
Debug.Assert(false, "Invalid node type.");
break;
}
Debug.Assert(newNode != null);
newNode.Operation = XmlDiffViewOperation.Add;
newNode.OperationId = opid;
sourceParent.InsertChildAfter(newNode, currentPosition, false);
currentPosition = newNode;
}
}
/// <summary>
/// Adds a node to the current list of data.
/// </summary>
/// <param name="node">Node object to add</param>
public override void AddNode(XmlDiffViewNode node)
{
if (this.lastChunk == null)
{
this.chunks = new ListChunk();
this.lastChunk = this.chunks;
this.currentChunk = this.chunks;
}
else if (this.lastChunk.Count == ListChunk.ChunkSize)
{
this.lastChunk.Next = new ListChunk();
this.lastChunk = this.lastChunk.Next;
}
this.lastChunk.AddNode(node);
this.count++;
}
/// <summary>
/// Store changes in the ChangeInfo object of the marked-up-baseline node
/// </summary>
/// <param name="diffgramElement">current element in the diffgram</param>
/// <param name="matchNodes">Object containing the list of baseline nodes
/// which match the position in the diffgram</param>
/// <param name="sourceParent">parent node in the baseline data</param>
/// <param name="currentPosition">current position</param>
private void OnChange(
XmlElement diffgramElement,
XmlDiffPathNodeList matchNodes,
XmlDiffViewParentNode sourceParent,
ref XmlDiffViewNode currentPosition)
{
Debug.Assert(matchNodes.Count == 1);
matchNodes.Reset();
matchNodes.MoveNext();
XmlDiffViewNode node = matchNodes.Current;
if (node.NodeType != XmlNodeType.Attribute)
{
currentPosition = node;
}
XmlDiffViewNode.ChangeInfo changeInfo = new XmlDiffViewNode.ChangeInfo();
string name = diffgramElement.HasAttribute("name") ? diffgramElement.GetAttribute("name") : null;
string prefix = diffgramElement.HasAttribute("prefix") ? diffgramElement.GetAttribute("prefix") : null;
string ns = diffgramElement.HasAttribute("ns") ? diffgramElement.GetAttribute("ns") : null;
switch (node.NodeType)
{
case XmlNodeType.Element:
changeInfo.LocalName = (name == null) ? ((XmlDiffViewElement)node).LocalName : name;
changeInfo.Prefix = (prefix == null) ? ((XmlDiffViewElement)node).Prefix : prefix;
changeInfo.NamespaceUri = (ns == null) ? ((XmlDiffViewElement)node).NamespaceUri : ns;
break;
case XmlNodeType.Attribute:
string value = diffgramElement.InnerText;
if (name == string.Empty && prefix == string.Empty && value == string.Empty)
{
return;
}
changeInfo.LocalName = (name == null) ? ((XmlDiffViewAttribute)node).LocalName : name;
changeInfo.Prefix = (prefix == null) ? ((XmlDiffViewAttribute)node).Prefix : prefix;
changeInfo.NamespaceUri = (ns == null) ? ((XmlDiffViewAttribute)node).NamespaceUri : ns;
changeInfo.Subset = diffgramElement.InnerText;
break;
case XmlNodeType.Text:
case XmlNodeType.CDATA:
Debug.Assert(diffgramElement.FirstChild != null);
changeInfo.Subset = diffgramElement.InnerText;
break;
case XmlNodeType.Comment:
Debug.Assert(diffgramElement.FirstChild != null);
Debug.Assert(diffgramElement.FirstChild.NodeType == XmlNodeType.Comment);
changeInfo.Subset = diffgramElement.FirstChild.Value;
break;
case XmlNodeType.ProcessingInstruction:
if (name == null)
{
Debug.Assert(diffgramElement.FirstChild != null);
Debug.Assert(diffgramElement.FirstChild.NodeType == XmlNodeType.ProcessingInstruction);
changeInfo.LocalName = diffgramElement.FirstChild.Name;
changeInfo.Subset = diffgramElement.FirstChild.Value;
}
else
{
changeInfo.LocalName = name;
changeInfo.Subset = ((XmlDiffViewPI)node).InnerText;
}
break;
case XmlNodeType.EntityReference:
Debug.Assert(name != null);
changeInfo.LocalName = name;
break;
case XmlNodeType.XmlDeclaration:
Debug.Assert(diffgramElement.FirstChild != null);
changeInfo.Subset = diffgramElement.InnerText;
break;
case XmlNodeType.DocumentType:
changeInfo.LocalName = (name == null) ? ((XmlDiffViewDocumentType)node).Name : name;
if (diffgramElement.HasAttribute("publicId"))
{
changeInfo.Prefix = diffgramElement.GetAttribute("publicId");
}
else
{
changeInfo.Prefix = ((XmlDiffViewDocumentType)node).PublicId;
}
if (diffgramElement.HasAttribute("systemId"))
{
changeInfo.NamespaceUri = diffgramElement.GetAttribute("systemId");
}
else
{
changeInfo.NamespaceUri = ((XmlDiffViewDocumentType)node).SystemId;
}
if (diffgramElement.FirstChild != null)
{
changeInfo.Subset = diffgramElement.InnerText;
}
else
{
changeInfo.Subset = ((XmlDiffViewDocumentType)node).Subset;
}
break;
default:
Debug.Assert(false, "Invalid node type.");
break;
}
node.ChangeInformation = changeInfo;
node.Operation = XmlDiffViewOperation.Change;
string opidAttr = diffgramElement.GetAttribute("opid");
if (opidAttr != string.Empty) {
node.OperationId = int.Parse(opidAttr);
} else {
node.OperationId = NextOperationId;
}
if (node.NodeType == XmlNodeType.Element &&
diffgramElement.FirstChild != null)
{
this.ApplyDiffgram(diffgramElement, (XmlDiffViewParentNode)node);
}
}
/// <summary>
/// Tag the relocated data
/// </summary>
/// <param name="diffgramElement">node in diffgram</param>
/// <param name="matchNodes">the path to the baseline node</param>
/// <param name="sourceParent">the baseline parent node</param>
/// <param name="currentPosition">the resulting node</param>
private void OnRemove(
XmlElement diffgramElement,
XmlDiffPathNodeList matchNodes,
XmlDiffViewParentNode sourceParent,
ref XmlDiffViewNode currentPosition)
{
// opid & descriptor
XmlDiffViewOperation operation = XmlDiffViewOperation.Remove;
int operationId = 0;
OperationDescriptor operationDesc = null;
string opidAttr = diffgramElement.GetAttribute("opid");
if (opidAttr != string.Empty) {
operationId = int.Parse(opidAttr);
operationDesc = this.GetDescriptor(operationId);
if (operationDesc.OperationType == OperationDescriptor.Type.Move) {
operation = XmlDiffViewOperation.MoveFrom;
}
} else {
operationId = NextOperationId;
}
// subtree
string subtreeAttr = diffgramElement.GetAttribute("subtree");
bool subtree = (subtreeAttr != "no");
if (!subtree)
{
if (matchNodes.Count != 1)
{
throw new Exception("The 'match' attribute of 'remove' " +
"element must select a single node when the 'subtree' " +
"attribute is specified.");
}
// annotate node
matchNodes.MoveNext();
XmlDiffViewNode node = matchNodes.Current;
this.AnnotateNode(node, operation, operationId, false);
if (operationId != 0 && operationDesc != null)
{
operationDesc.NodeList.AddNode(node);
}
// recurse
this.ApplyDiffgram(diffgramElement, (XmlDiffViewParentNode)node);
}
else
{
// annotate nodes
matchNodes.Reset();
while (matchNodes.MoveNext())
{
if (operationId != 0 && operationDesc != null)
{
operationDesc.NodeList.AddNode(matchNodes.Current);
}
this.AnnotateNode(matchNodes.Current, operation, operationId, true);
}
}
}
/// <summary>
/// Clear the references the last
/// child node and attribute processed.
/// </summary>
public void Reset()
{
this.lastChild = null;
this.lastAttribute = null;
}
internal abstract void AddNode( XmlDiffViewNode node );
/// <summary> /// Add a node to the current list of data. /// </summary> /// <param name="node">Node object to add</param> public abstract void AddNode(XmlDiffViewNode node);
internal void AddNode( XmlDiffViewNode node )
{
Debug.Assert( _count < ChunkSize );
_nodes[ _count++ ] = node;
}
internal void InsertChildAfter( XmlDiffViewNode newChild, XmlDiffViewNode referenceChild, bool bSourceNode )
{
Debug.Assert( newChild != null );
if ( referenceChild == null ) {
newChild._nextSibbling = _childNodes;
_childNodes = newChild;
}
else {
newChild._nextSibbling = referenceChild._nextSibbling;
referenceChild._nextSibbling = newChild;
}
if ( bSourceNode )
_sourceChildNodesCount++;
newChild._parent = this;
}
internal override void AddNode( XmlDiffViewNode node )
{
if ( _lastChunk == null )
{
_chunks = new ListChunk();
_lastChunk = _chunks;
_currentChunk = _chunks;
}
else if ( _lastChunk._count == ListChunk.ChunkSize )
{
_lastChunk._next = new ListChunk();
_lastChunk = _lastChunk._next;
}
_lastChunk.AddNode( node );
_count++;
}
private void LoadSourceChildNodes(
XmlDiffViewParentNode parent,
XmlReader reader,
bool bEmptyElement)
{
var loadState = this._loadState;
this._loadState.Reset();
while (reader.MoveToNextAttribute())
{
XmlDiffViewAttribute newAttr;
if (reader.Prefix == "xmlns" || reader.Prefix == string.Empty && reader.LocalName == "xmlns")
{
newAttr = new XmlDiffViewAttribute(reader.LocalName, reader.Prefix, reader.NamespaceURI, reader.Value);
if (this._bIgnoreNamespaces)
{
newAttr._op = XmlDiffViewOperation.Ignore;
}
}
else
{
var str = this._bIgnoreWhitespace ? XmlDiffView.NormalizeText(reader.Value) : reader.Value;
newAttr = new XmlDiffViewAttribute(reader.LocalName, reader.Prefix, reader.NamespaceURI, str);
}
((XmlDiffViewElement)parent).InsertAttributeAfter(newAttr, this._loadState._curLastAttribute);
this._loadState._curLastAttribute = newAttr;
}
if (!bEmptyElement)
{
while (reader.Read())
{
if (reader.NodeType != XmlNodeType.Whitespace)
{
XmlDiffViewNode newChild = null;
switch (reader.NodeType)
{
case XmlNodeType.Element:
var isEmptyElement = reader.IsEmptyElement;
var xmlDiffViewElement = new XmlDiffViewElement(reader.LocalName, reader.Prefix, reader.NamespaceURI, this._bIgnorePrefixes);
this.LoadSourceChildNodes(xmlDiffViewElement, reader, isEmptyElement);
newChild = xmlDiffViewElement;
break;
case XmlNodeType.Attribute:
Debug.Assert(false, "We should never get to this point, attributes should be read at the beginning of thid method.");
break;
case XmlNodeType.Text:
newChild = new XmlDiffViewCharData(this._bIgnoreWhitespace ? XmlDiffView.NormalizeText(reader.Value) : reader.Value, XmlNodeType.Text);
break;
case XmlNodeType.CDATA:
newChild = new XmlDiffViewCharData(reader.Value, XmlNodeType.CDATA);
break;
case XmlNodeType.EntityReference:
newChild = new XmlDiffViewER(reader.Name);
break;
case XmlNodeType.ProcessingInstruction:
newChild = new XmlDiffViewPI(reader.Name, reader.Value);
if (this._bIgnorePI)
{
newChild._op = XmlDiffViewOperation.Ignore;
break;
}
break;
case XmlNodeType.Comment:
newChild = new XmlDiffViewCharData(reader.Value, XmlNodeType.Comment);
if (this._bIgnoreComments)
{
newChild._op = XmlDiffViewOperation.Ignore;
break;
}
break;
case XmlNodeType.DocumentType:
newChild = new XmlDiffViewDocumentType(reader.Name, reader.GetAttribute("PUBLIC"), reader.GetAttribute("SYSTEM"), reader.Value);
if (this._bIgnoreDtd)
{
newChild._op = XmlDiffViewOperation.Ignore;
break;
}
break;
case XmlNodeType.SignificantWhitespace:
if (reader.XmlSpace == XmlSpace.Preserve)
{
newChild = new XmlDiffViewCharData(reader.Value, XmlNodeType.SignificantWhitespace);
if (this._bIgnoreWhitespace)
{
newChild._op = XmlDiffViewOperation.Ignore;
break;
}
break;
}
break;
case XmlNodeType.EndElement:
goto label_29;
case XmlNodeType.XmlDeclaration:
newChild = new XmlDiffViewXmlDeclaration(XmlDiffView.NormalizeText(reader.Value));
if (this._bIgnoreXmlDecl)
{
newChild._op = XmlDiffViewOperation.Ignore;
break;
}
break;
default:
Debug.Assert(false, "Invalid node type");
break;
}
parent.InsertChildAfter(newChild, this._loadState._curLastChild, true);
this._loadState._curLastChild = newChild;
}
}
}
label_29:
this._loadState = loadState;
}
/// <summary>
/// Adds a node object to the collection.
/// </summary>
/// <param name="node">node object to add</param>
public void AddNode(XmlDiffViewNode node)
{
Debug.Assert(this.count < ChunkSize);
this.nodes[this.count++] = node;
}
/// <summary>
/// Inserts a node after the specified node
/// </summary>
/// <param name="newChild">node to insert</param>
/// <param name="referenceChild">node to insert after</param>
/// <param name="sourceNode">This is a baseline node</param>
internal void InsertChildAfter(
XmlDiffViewNode newChild,
XmlDiffViewNode referenceChild,
bool sourceNode)
{
Debug.Assert(newChild != null);
if (referenceChild == null)
{
newChild.NextSibbling = this.ChildNodes;
this.ChildNodes = newChild;
}
else
{
newChild.NextSibbling = referenceChild.NextSibbling;
referenceChild.NextSibbling = newChild;
}
if (sourceNode)
{
this.SourceChildNodesCount++;
}
newChild.Parent = this;
}
