public override int ReadFrom(byte[] buffer, int offset)
{
var itemOffset = base.ReadFrom(buffer, offset);
Items = new NodeItem[ItemCount];
NodeData = new BaseItem[ItemCount];
for (int i = 0; i < ItemCount; i++)
{
Items[i] = new NodeItem();
itemOffset += Items[i].ReadFrom(buffer, itemOffset);
switch (Items[i].Key.ObjectId)
{
case (ulong)ReservedObjectId.CsumItem:
case (ulong)ReservedObjectId.TreeReloc:
continue;
default:
NodeData[i] = CreateItem(Items[i], buffer, Length + offset);
break;
}
}
return(Size);
}
private BaseItem CreateItem(NodeItem item, byte[] buffer, int offset)
{
var data = EndianUtilities.ToByteArray(buffer, (int)(offset + item.DataOffset), (int)item.DataSize);
BaseItem result;
switch (item.Key.ItemType)
{
case ItemType.ChunkItem:
result = new ChunkItem(item.Key);
break;
case ItemType.DevItem:
result = new DevItem(item.Key);
break;
case ItemType.RootItem:
result = new RootItem(item.Key);
break;
case ItemType.InodeRef:
result = new InodeRef(item.Key);
break;
case ItemType.InodeItem:
result = new InodeItem(item.Key);
break;
case ItemType.DirItem:
result = new DirItem(item.Key);
break;
case ItemType.DirIndex:
result = new DirIndex(item.Key);
break;
case ItemType.ExtentData:
result = new ExtentData(item.Key);
break;
case ItemType.RootRef:
result = new RootRef(item.Key);
break;
case ItemType.RootBackref:
result = new RootBackref(item.Key);
break;
case ItemType.XattrItem:
result = new XattrItem(item.Key);
break;
case ItemType.OrphanItem:
result = new OrphanItem(item.Key);
break;
default:
throw new IOException($"Unsupported item type {item.Key.ItemType}");
}
result.ReadFrom(data, 0);
return(result);
}
