public void ReportDifferencesToListener()
{
foreach (XmlNode node in _parentDom.SafeSelectNodes("lift/entry"))
{
string strId = LiftUtils.GetId(node);
if (!_parentIdToNodeIndex.ContainsKey(strId))
{
_parentIdToNodeIndex.Add(strId, node);
}
else
{
System.Diagnostics.Debug.WriteLine(String.Format("Found ID multiple times: {0}", strId));
}
}
foreach (XmlNode childNode in _childDom.SafeSelectNodes("lift/entry"))
{
try
{
ProcessEntry(childNode);
}
catch (Exception error)
{
EventListener.ChangeOccurred(new ErrorDeterminingChangeReport(_parentFileInRevision,
_childFileInRevision, null, childNode,
error));
}
}
//now detect any removed (not just marked as deleted) elements
foreach (XmlNode parentNode in _parentIdToNodeIndex.Values) // _parentDom.SafeSelectNodes("lift/entry"))
{
try
{
if (!_processedIds.Contains(LiftUtils.GetId(parentNode)))
{
EventListener.ChangeOccurred(new XmlDeletionChangeReport(_parentFileInRevision, parentNode,
null));
}
}
catch (Exception error)
{
EventListener.ChangeOccurred(new ErrorDeterminingChangeReport(_parentFileInRevision,
_childFileInRevision,
parentNode,
null,
error));
}
}
}
private void ProcessEntry(XmlNode child)
{
string id = LiftUtils.GetId(child);
XmlNode parent = null; // = LiftUtils.FindEntryById(_parentDom, id);
_parentIdToNodeIndex.TryGetValue(id, out parent);
string path = string.Empty;
if (_childFileInRevision != null && !string.IsNullOrEmpty(_childFileInRevision.FullPath))
{
path = Path.GetFileName(_childFileInRevision.FullPath);
}
string url = LiftUtils.GetUrl(child, path);
if (parent == null) //it's new
{
//it's possible to create and entry, delete it, then checkin, leave us with this
//spurious deletion messages
if (string.IsNullOrEmpty(XmlUtilities.GetOptionalAttributeString(child, "dateDeleted")))
{
EventListener.ChangeOccurred(new XmlAdditionChangeReport(_childFileInRevision, child, url));
}
}
else if (LiftUtils.AreTheSame(child, parent)) //unchanged or both made same change
{
}
else //one or both changed
{
if (!string.IsNullOrEmpty(XmlUtilities.GetOptionalAttributeString(child, "dateDeleted")))
{
EventListener.ChangeOccurred(new XmlDeletionChangeReport(_parentFileInRevision, parent, child));
}
else
{
//enhance... we are only using this because it will conveniently find the differences
//and fire them off for us
//enhance: we can skip this and just say "something changed in this entry",
//until we really *need* the details (if ever), and have a way to call this then
//_mergingStrategy.MakeMergedEntry(this.EventListener, child, parent, parent);
EventListener.ChangeOccurred(new XmlChangedRecordReport(_parentFileInRevision, _childFileInRevision, parent, child, url));
}
}
_processedIds.Add(id);
}
public string GetMergedLift()
{
// string path = Path.Combine(System.Environment.GetEnvironmentVariable("temp"),
// @"chorusMergeResult" + Path.GetFileName(_alphaLiftPath) + ".txt");
//
// File.WriteAllText(path, "ENter GetMergedLift()");
var ancestorDom = new XmlDocument();
ancestorDom.LoadXml(_ancestorLift);
//var comonIdToNodeIndex = new Dictionary<string, XmlNode>(StringComparer.OrdinalIgnoreCase);
var alphaDom = new XmlDocument();
alphaDom.LoadXml(_alphaLift);
var alphaIdToNodeIndex = new Dictionary <string, XmlNode>(StringComparer.OrdinalIgnoreCase);
var betaDom = new XmlDocument();
betaDom.LoadXml(_betaLift);
var betaIdToNodeIndex = new Dictionary <string, XmlNode>(StringComparer.OrdinalIgnoreCase);
var processedIds = new HashSet <string>(StringComparer.OrdinalIgnoreCase);
// The memory stream, rather than a string builder, is needed to avoid utf-16 coming out
using (var memoryStream = new MemoryStream())
{
//foreach (XmlNode commonNode in _ancestorDom.SafeSelectNodes("lift/entry"))
// comonIdToNodeIndex[LiftUtils.GetId(commonNode)] = commonNode;
foreach (XmlNode alphaNode in alphaDom.SafeSelectNodes("lift/entry"))
{
alphaIdToNodeIndex[LiftUtils.GetId(alphaNode)] = alphaNode;
}
foreach (XmlNode betaNode in betaDom.SafeSelectNodes("lift/entry"))
{
betaIdToNodeIndex[LiftUtils.GetId(betaNode)] = betaNode;
}
var settings = CanonicalXmlSettings.CreateXmlWriterSettings();
settings.CloseOutput = false;
using (var writer = XmlWriter.Create(memoryStream, settings))
{
WriteStartOfLiftElement(writer, alphaDom);
ProcessHeaderNodeHACK(writer, alphaDom, betaDom);
// Process alpha's entries
ProcessEntries(writer, EventListener, _mergingStrategy, ancestorDom, processedIds,
alphaDom, "alpha", _alphaLift,
betaIdToNodeIndex, "beta", _betaLift);
// Process beta's entries
ProcessEntries(writer, EventListener, _mergingStrategy, ancestorDom, processedIds,
betaDom, "beta", _betaLift,
alphaIdToNodeIndex, "alpha", _alphaLift);
writer.WriteEndElement();
writer.Close();
}
// Don't use GetBuffer()!!! it pads the results with nulls: return Encoding.UTF8.GetString(memoryStream.ToArray());
// This works but doubles the ram use: return Encoding.UTF8.GetString(memoryStream.ToArray());
return(Encoding.UTF8.GetString(memoryStream.GetBuffer(), 0, (int)memoryStream.Position));
}
}
private static void ProcessEntry(XmlWriter writer, IMergeEventListener eventListener, IMergeStrategy mergingStrategy,
XmlNode ancestorDom, HashSet <string> processedIds,
XmlNode sourceEntry, string sourceLabel, string sourcePath,
IDictionary <string, XmlNode> otherIdNodeIndex, string otherLabel, string otherPath)
{
var id = LiftUtils.GetId(sourceEntry);
if (processedIds.Contains(id))
{
return; // Already handled the id.
}
XmlNode otherEntry;
var commonEntry = FindEntry(ancestorDom, id);
if (!otherIdNodeIndex.TryGetValue(id, out otherEntry))
{
// It is in source, but not in target, so it clearly has been deleted by target (new style deletion).
if (LiftUtils.GetIsMarkedAsDeleted(sourceEntry))
{
if (!LiftUtils.GetIsMarkedAsDeleted(commonEntry))
{
// source and target both deleted but in different ways, so make deletion change report.
// There is no need to write anything.
eventListener.ChangeOccurred(new XmlDeletionChangeReport(sourcePath, commonEntry, sourceEntry));
}
//else
//{
// // Make it go away without fanfare by doing nothing to writer, since target actually removed the dead entry.
//}
processedIds.Add(id);
return;
}
if (commonEntry == null)
{
// source added it
eventListener.ChangeOccurred(new XmlAdditionChangeReport(sourcePath, sourceEntry));
writer.WriteNode(sourceEntry.CreateNavigator(), false);
}
else
{
if (AreTheSame(sourceEntry, commonEntry))
{
// target's deletion wins with a plain vanilla deletion report.
eventListener.ChangeOccurred(new XmlDeletionChangeReport(sourcePath, commonEntry, otherEntry));
}
else
{
// source wins over target's new style deletion on the least loss priciple.
// Add an edit vs remove conflict report.
eventListener.ConflictOccurred(new RemovedVsEditedElementConflict("entry", sourceEntry, otherEntry, commonEntry, new MergeSituation(sourcePath, sourceLabel, "", otherLabel, "", MergeOrder.ConflictHandlingModeChoices.WeWin), null, sourceLabel));
writer.WriteNode(sourceEntry.CreateNavigator(), false);
}
processedIds.Add(id);
return;
}
}
else if (AreTheSame(sourceEntry, otherEntry))
{
//unchanged or both made same change
writer.WriteNode(sourceEntry.CreateNavigator(), false);
}
else if (LiftUtils.GetIsMarkedAsDeleted(otherEntry))
{
// source edited, target deleted (old style deletion using dateDeleted attr).
eventListener.ConflictOccurred(new RemovedVsEditedElementConflict("entry", sourceEntry, otherEntry, commonEntry, new MergeSituation(sourcePath, sourceLabel, "", otherLabel, "", MergeOrder.ConflictHandlingModeChoices.WeWin), null, sourceLabel));
}
else if (LiftUtils.GetIsMarkedAsDeleted(sourceEntry))
{
// source deleted (old style), but target edited.
// target wins with the least loss principle.
// But generate a conflict report.
eventListener.ConflictOccurred(new RemovedVsEditedElementConflict("entry", otherEntry, sourceEntry, commonEntry, new MergeSituation(otherPath, otherLabel, "", sourceLabel, "", MergeOrder.ConflictHandlingModeChoices.TheyWin), null, sourceLabel));
writer.WriteNode(otherEntry.CreateNavigator(), false);
}
else
{
// One or both of them edited it, so merge the hard way.
using (var reader = XmlReader.Create(new StringReader(
mergingStrategy.MakeMergedEntry(eventListener, sourceEntry, otherEntry, commonEntry)
)))
{
writer.WriteNode(reader, false);
}
}
processedIds.Add(id);
}