private void AddModTimeCondition(ModTimeFilterCondition Condition, DateTimeOffset From = default, DateTimeOffset To = default)
{
ModTimeCondition |= Condition;
if (Condition.HasFlag(ModTimeFilterCondition.Range))
{
ModTimeFrom = From;
ModTimeTo = To;
}
}
private void RemoveModTimeCondition(ModTimeFilterCondition Condition)
{
if (ModTimeCondition != ModTimeFilterCondition.None)
{
ModTimeCondition ^= Condition;
if (Condition.HasFlag(ModTimeFilterCondition.Range))
{
ModTimeFrom = default;
ModTimeTo = default;
}
}
}
public IEnumerable <FileSystemStorageItemBase> GetFilterCollection()
{
List <FileSystemStorageItemBase> NameFilterResult = null;
List <FileSystemStorageItemBase> ModTimeFilterResult = null;
List <FileSystemStorageItemBase> TypeFilterResult = null;
List <FileSystemStorageItemBase> SizeFilterResult = null;
if (NameCondition != NameFilterCondition.None)
{
NameFilterResult = new List <FileSystemStorageItemBase>();
if (NameCondition.HasFlag(NameFilterCondition.Regex))
{
try
{
NameFilterResult.AddRange(OriginCopy.Where((Item) => Regex.IsMatch(Item.Name, RegexExpression)));
}
catch
{
NameFilterResult.AddRange(OriginCopy);
}
}
else
{
if (NameCondition.HasFlag(NameFilterCondition.From_A_To_G))
{
NameFilterResult.AddRange(OriginCopy.Where((Item) => (Item.Name.FirstOrDefault() >= 65 && Item.Name.FirstOrDefault() <= 71) || (Item.Name.FirstOrDefault() >= 97 && Item.Name.FirstOrDefault() <= 103)));
}
if (NameCondition.HasFlag(NameFilterCondition.From_H_To_N))
{
NameFilterResult.AddRange(OriginCopy.Where((Item) => (Item.Name.FirstOrDefault() >= 72 && Item.Name.FirstOrDefault() <= 78) || (Item.Name.FirstOrDefault() >= 104 && Item.Name.FirstOrDefault() <= 110)));
}
if (NameCondition.HasFlag(NameFilterCondition.From_O_To_T))
{
NameFilterResult.AddRange(OriginCopy.Where((Item) => (Item.Name.FirstOrDefault() >= 79 && Item.Name.FirstOrDefault() <= 84) || (Item.Name.FirstOrDefault() >= 111 && Item.Name.FirstOrDefault() <= 116)));
}
if (NameCondition.HasFlag(NameFilterCondition.From_U_To_Z))
{
NameFilterResult.AddRange(OriginCopy.Where((Item) => (Item.Name.FirstOrDefault() >= 85 && Item.Name.FirstOrDefault() <= 90) || (Item.Name.FirstOrDefault() >= 117 && Item.Name.FirstOrDefault() <= 112)));
}
if (NameCondition.HasFlag(NameFilterCondition.Other))
{
NameFilterResult.AddRange(OriginCopy.Where((Item) => Item.Name.FirstOrDefault() < 65 || (Item.Name.FirstOrDefault() > 90 && Item.Name.FirstOrDefault() < 97) || Item.Name.FirstOrDefault() > 122));
}
}
}
if (ModTimeCondition != ModTimeFilterCondition.None)
{
ModTimeFilterResult = new List <FileSystemStorageItemBase>();
if (ModTimeCondition.HasFlag(ModTimeFilterCondition.Range))
{
ModTimeFilterResult.AddRange(OriginCopy.Where((Item) => Item.ModifiedTimeRaw >= ModTimeFrom && Item.ModifiedTimeRaw <= ModTimeTo));
}
if (ModTimeCondition.HasFlag(ModTimeFilterCondition.One_Month_Ago))
{
ModTimeFilterResult.AddRange(OriginCopy.Where((Item) => Item.ModifiedTimeRaw >= DateTimeOffset.Now.AddMonths(-1)));
}
if (ModTimeCondition.HasFlag(ModTimeFilterCondition.Three_Month_Ago))
{
ModTimeFilterResult.AddRange(OriginCopy.Where((Item) => Item.ModifiedTimeRaw >= DateTimeOffset.Now.AddMonths(-3)));
}
if (ModTimeCondition.HasFlag(ModTimeFilterCondition.Long_Ago))
{
ModTimeFilterResult.AddRange(OriginCopy.Where((Item) => Item.ModifiedTimeRaw < DateTimeOffset.Now.AddMonths(-3)));
}
}
if (TypeFilter.Count > 0)
{
TypeFilterResult = OriginCopy.Where((Item) => TypeFilter.Contains(Item.Type.ToLower())).ToList();
}
if (SizeCondition != SizeFilterCondition.None)
{
SizeFilterResult = new List <FileSystemStorageItemBase>();
if (SizeCondition.HasFlag(SizeFilterCondition.Smaller))
{
SizeFilterResult.AddRange(OriginCopy.Where((Item) => Item.SizeRaw >> 10 < 1024));
}
if (SizeCondition.HasFlag(SizeFilterCondition.Medium))
{
SizeFilterResult.AddRange(OriginCopy.Where((Item) => Item.SizeRaw >> 10 >= 1024 && Item.SizeRaw >> 20 < 128));
}
if (SizeCondition.HasFlag(SizeFilterCondition.Larger))
{
SizeFilterResult.AddRange(OriginCopy.Where((Item) => Item.SizeRaw >> 20 >= 128 && Item.SizeRaw >> 20 < 1024));
}
if (SizeCondition.HasFlag(SizeFilterCondition.Huge))
{
SizeFilterResult.AddRange(OriginCopy.Where((Item) => Item.SizeRaw >> 30 >= 1));
}
}
IEnumerable <FileSystemStorageItemBase> FilterIntersct = null;
if (NameFilterResult != null)
{
if (FilterIntersct == null)
{
FilterIntersct = NameFilterResult;
}
else
{
FilterIntersct = FilterIntersct.Intersect(NameFilterResult);
}
}
if (ModTimeFilterResult != null)
{
if (FilterIntersct == null)
{
FilterIntersct = ModTimeFilterResult;
}
else
{
FilterIntersct = FilterIntersct.Intersect(ModTimeFilterResult);
}
}
if (TypeFilterResult != null)
{
if (FilterIntersct == null)
{
FilterIntersct = TypeFilterResult;
}
else
{
FilterIntersct = FilterIntersct.Intersect(TypeFilterResult);
}
}
if (SizeFilterResult != null)
{
if (FilterIntersct == null)
{
FilterIntersct = SizeFilterResult;
}
else
{
FilterIntersct = FilterIntersct.Intersect(SizeFilterResult);
}
}
if (FilterIntersct != null && FilterIntersct.Any())
{
return(SortCollectionGenerator.Current.GetSortedCollection(FilterIntersct));
}
else
{
return(new List <FileSystemStorageItemBase>(0));
}
}