public XmlDocument ApplyChanges(BaseDiffResultObjectList results, XmlNode originalDocument)
{
XmlDocument resultDocument = new XmlDocument();
XPathNavigator navigator = originalDocument.CreateNavigator();
foreach (var item in results.Items)
{
GetCommonNode(item, ref navigator);
}
resultDocument.LoadXml(navigator.OuterXml);
return resultDocument;
}
public XmlDocument GetResultFile(BaseDiffResultObjectList changes, XmlDocument originalNode)
{
Assert.ArgumentNotNull(originalNode, "Original document can't be null");
return GetResultFile(changes, originalNode.DocumentElement);
}
public XmlDocument GetResultFile(BaseDiffResultObjectList changes, string originalNodePath)
{
Assert.StringIsNullOrEmpty(originalNodePath, "Output File Path is empty");
XmlTextReader originalDocumentReader = new XmlTextReader(new StreamReader(originalNodePath));
XmlDocument originalDocument = new XmlDocument();
originalDocument.Load(originalDocumentReader);
originalDocumentReader.Close();
return GetResultFile(changes, originalDocument);
}
public XmlDocument GetResultFile(BaseDiffResultObjectList changes, XmlNode originalNode)
{
Assert.ArgumentNotNull(originalNode, "Original Node can't be null");
return Manager.ApplyChanges(changes, originalNode);
}
public BaseDiffResultObjectList DoCompare(XmlNode originalDocument, XmlNode changedDocument, string outputFilePath, XmlDiffOptions options)
{
Assert.StringIsNullOrEmpty(outputFilePath, "Output File Path is empty");
BaseDiffResultObjectList results = new BaseDiffResultObjectList();
StreamWriter stream = new StreamWriter(outputFilePath, false);
XmlTextWriter tw = new XmlTextWriter(stream);
tw.Formatting = Formatting.Indented;
SetDiffOptions(options);
bool isEqual = false;
try
{
isEqual = _diff.Compare(originalDocument, changedDocument, tw);
}
finally
{
tw.Close();
stream.Close();
}
if (isEqual)
{
return results;
}
XmlTextReader diffGram = new XmlTextReader(outputFilePath);
XmlDocument diffgramDoc = new XmlDocument();
diffgramDoc.Load(diffGram);
Manager.ApplyDiff(diffgramDoc.DocumentElement.FirstChild, originalDocument, ref results);
return results;
}
public void ApplyDiff(XmlNode diffgramParent, XmlNode sourceParent, ref BaseDiffResultObjectList results)
{
IEnumerator enumerator = diffgramParent.ChildNodes.GetEnumerator();
XmlNode matchNode = sourceParent;
while (enumerator.MoveNext())
{
XmlNode current = (XmlNode)enumerator.Current;
if (current.NodeType != XmlNodeType.Comment)
{
XmlElement element = enumerator.Current as XmlElement;
if (element == null)
{
continue;
}
if (element.NamespaceURI != "http://schemas.microsoft.com/xmltools/2002/xmldiff")
{
throw new Exception("Invalid element in diffgram.");
}
string attribute = element.GetAttribute("match");
if (attribute != string.Empty)
{
int index = 0;
if (int.TryParse(attribute, out index))
{
matchNode = sourceParent.ChildNodes[index - 1];
}
}
string localName = element.LocalName;
if (localName != null)
{
localName = string.IsInterned(localName);
if (localName == "node")
{
if (element.ChildNodes.Count > 0)
{
ApplyDiff(element, matchNode, ref results);
}
}
else
{
if (localName == "add")
{
results.OnAdd(element.FirstChild, FindXPath(matchNode), FindXPath(matchNode, true));
continue;
}
if (localName == "remove")
{
results.OnRemove(matchNode, FindXPath(matchNode), FindXPath(matchNode, true));
continue;
}
if (localName == "change")
{
results.OnChange(matchNode, element.FirstChild, FindXPath(matchNode), FindXPath(matchNode, true));
if (element.ChildNodes.Count > 0)
{
ApplyDiff(element, matchNode, ref results);
}
}
}
}
}
}
}