private static void TwoWayDiff(XElement baseElem, XElement compareElem, ElementWriter bWriter, ElementWriter cWriter, List<ListCompare> results)
{
var baseList = GetKeys(baseElem.Elements());
var compareList = GetKeys(compareElem.Elements());
var compares = ListCompare.Create(baseList, compareList, v => v.Item1);
// Deal with the relationships of versionable items
if (baseElem.Name.LocalName == "Relationships" && !compares.Any(c => c.Base >= 0 && c.Compare >= 0))
{
var baseRelateds = baseElem.Elements().Select(e => Tuple.Create(GetRelatedId(e), e)).ToList();
var compareRelateds = compareElem.Elements().Select(e => Tuple.Create(GetRelatedId(e), e)).ToList();
if (!baseRelateds.Any(t => string.IsNullOrEmpty(t.Item1))
&& !compareRelateds.Any(t => string.IsNullOrEmpty(t.Item1))
&& baseRelateds.Select(t => t.Item1).Distinct().Count() == baseRelateds.Count
&& compareRelateds.Select(t => t.Item1).Distinct().Count() == compareRelateds.Count)
{
compares = ListCompare.Create(baseRelateds, compareRelateds, v => v.Item1);
}
}
int start;
foreach (var tuple in compares)
{
if (tuple.Base < 0)
{
start = cWriter.CurrentLine + 1;
cWriter.WriteElement(compareList[tuple.Compare].Item2);
results.AddRange(Enumerable.Range(start, cWriter.CurrentLine - start + 1).Select(i => new ListCompare(-1, i)));
}
else if (tuple.Compare < 0)
{
start = bWriter.CurrentLine + 1;
bWriter.WriteElement(baseList[tuple.Base].Item2);
results.AddRange(Enumerable.Range(start, bWriter.CurrentLine - start + 1).Select(i => new ListCompare(i, -1)));
}
else if (baseList[tuple.Base].Item2.Elements().Any() &&
compareList[tuple.Compare].Item2.Elements().Any())
{
results.Add(new ListCompare(bWriter.CurrentLine + 1, cWriter.CurrentLine + 1) { IsDifferent = false });
bWriter.WriteStartElement(baseList[tuple.Base].Item2);
cWriter.WriteStartElement(compareList[tuple.Compare].Item2);
TwoWayDiff(baseList[tuple.Base].Item2, compareList[tuple.Compare].Item2, bWriter, cWriter, results);
bWriter.WriteEndElement();
cWriter.WriteEndElement();
}
else if (baseList[tuple.Base].Item2.Elements().Any() || compareList[tuple.Compare].Item2.Elements().Any() || baseList[tuple.Base].Item2.Value != compareList[tuple.Compare].Item2.Value)
{
results.Add(new ListCompare(bWriter.CurrentLine + 1, cWriter.CurrentLine + 1) { IsDifferent = true });
for (int i = results.Last().Base; i < bWriter.CurrentLine; i++)
results.Add(new ListCompare(i, -1));
for (int i = results.Last().Compare; i < cWriter.CurrentLine; i++)
results.Add(new ListCompare(-1, i));
bWriter.WriteElement(baseList[tuple.Base].Item2);
cWriter.WriteElement(compareList[tuple.Compare].Item2);
}
else
{
results.Add(new ListCompare(bWriter.CurrentLine + 1, cWriter.CurrentLine + 1));
bWriter.WriteElement(baseList[tuple.Base].Item2);
cWriter.WriteElement(compareList[tuple.Compare].Item2);
}
}
}