private static ListItem <ILogItem> Merge_AddItem(
this ILogList MergeList, ILogList FromList, ListItem <ILogItem> Item)
{
var addItem = Item.Value.NewCopy();
addItem.ApppendMergeName(FromList);
MergeList.AddItem(addItem);
var nextItem = FromList.NextItem(Item);
return(nextItem);
}
public static ILogList Merge(
this ILogList List1,
ILogList List2, ILogList List3 = null, ILogList List4 = null,
ILogList List5 = null, ILogList List6 = null)
{
ILogList merge = null;
ILogList[] listArray = new ILogList[] { List1, List2, List3, List4, List5, List6 };
// create the merge list from the first non null input list.
{
var list = listArray.FirstOrDefault(c => c != null);
if (list != null)
{
merge = list.NewList();
}
}
// load itemArray with the first item from each of the listArray lists.
var itemArray = new ListItem <ILogItem> [listArray.Length];
{
for (int ix = 0; ix < listArray.Length; ++ix)
{
itemArray[ix] = listArray[ix]?.NextItem(null);
}
}
// find the itemArray item which is lowest in LogTime order.
while (itemArray.FirstNonNull() != null)
{
int curIx = 0;
ListItem <ILogItem> curItem = null;
for (int ix = 0; ix < itemArray.Length; ++ix)
{
if (curItem == null)
{
curItem = itemArray[ix];
curIx = ix;
}
else
{
var item5 = itemArray[ix];
if ((item5 != null) && (item5.Value.LogTime <= curItem.Value.LogTime))
{
curItem = item5;
curIx = ix;
}
}
}
if (curItem == null)
{
break;
}
{
var logItem = curItem.Value.NewCopy();
logItem.ApppendMergeName(listArray[curIx]);
merge.AddItem(logItem);
itemArray[curIx] = listArray[curIx].NextItem(curItem);
}
}
return(merge);
}
