private void CompareObjects(ConfigObject source, ConfigObject target, DiffObject diff)
{
int source_count = source.Values.Count;
int target_count = target.Values.Count;
int count = Math.Min(source_count, target_count);
ConfigObject mdSource;
ConfigObject mdTarget;
for (int i = 0; i < count; i++) // update
{
mdSource = source.Values[i] as ConfigObject;
mdTarget = target.Values[i] as ConfigObject;
if (mdSource != null && mdTarget != null)
{
DiffObject newDiff = CreateDiff(diff, DiffKind.Update, mdSource, mdTarget, i);
CompareObjects(mdSource, mdTarget, newDiff);
if (newDiff.DiffObjects.Count > 0)
{
diff.DiffObjects.Add(newDiff);
}
}
else if (mdSource != null || mdTarget != null)
{
diff.DiffObjects.Add(
CreateDiff(
diff, DiffKind.Update, source.Values[i], target.Values[i], i));
}
else
{
if ((string)source.Values[i] != (string)target.Values[i])
{
diff.DiffObjects.Add(
CreateDiff(
diff, DiffKind.Update, source.Values[i], target.Values[i], i));
}
}
}
if (source_count > target_count) // delete
{
for (int i = count; i < source_count; i++)
{
diff.DiffObjects.Add(
CreateDiff(
diff, DiffKind.Delete, source.Values[i], null, i));
}
}
else if (target_count > source_count) // insert
{
for (int i = count; i < target_count; i++)
{
diff.DiffObjects.Add(
CreateDiff(
diff, DiffKind.Insert, null, target.Values[i], i));
}
}
}
private DiffObject CreateDiff(DiffObject parent, DiffKind kind, object source, object target, int path)
{
return(new DiffObject()
{
Path = parent.Path + (string.IsNullOrEmpty(parent.Path) ? string.Empty : ".") + path.ToString(),
SourceValue = source,
TargetValue = target,
DiffKind = kind
});
}
public DiffObject CompareTo(ConfigObject target)
{
DiffObject diff = new DiffObject()
{
Path = string.Empty,
SourceValue = this,
TargetValue = target,
DiffKind = DiffKind.None
};
CompareObjects(this, target, diff);
return(diff);
}
