public void Deduplication()
{
var changedItems = new List <int>();
var items = _index.Items
.Where(item => _driver.Exists(item.FileName))
.ToDictionary(item => item, item => _driver.GetLength(item.FileName));
var length = items.Count;
for (int i = 0; i < length; i++)
{
if (changedItems.Contains(i))
{
continue;
}
var item1 = items.ElementAt(i);
using (var s1 = _driver.Read(item1.Key.FileName))
{
for (int j = i + 1; j < length; j++)
{
if (changedItems.Contains(j))
{
continue;
}
var item2 = items.ElementAt(j);
if (item1.Value != item2.Value)
{
continue;
}
using (var s2 = _driver.Read(item2.Key.FileName))
{
if (!FileStreamEquals.Equals(s1, s2))
{
continue;
}
}
_driver.Remove(item2.Key.FileName);
item2.Key.FileName = item1.Key.FileName;
changedItems.Add(j);
}
}
_index.Save();
}
_index.Save();
}
