public V8File(V8Catalog _parent, String _name, V8File _previous, int _start_data, int _start_header, DateTime _time_create, DateTime _time_modify)
{
IsDestructed = false;
Flushed = false;
Parent = _parent;
Name = _name;
Previous = _previous;
Next = null;
Data = null;
StartData = _start_data;
StartHeader = _start_header;
IsDataModified = (StartData != 0 ? true : false);
IsHeaderModified = (StartHeader != 0 ? true : false);
if (Previous != null)
{
Previous.Next = this;
}
else
{
Parent.First = this;
}
ISCatalog = FileIsCatalog.iscatalog_unknown;
Self = null;
IsOpened = false;
TimeCreate = _time_create;
TimeModify = _time_modify;
SelfZipped = false;
if (Parent != null)
{
Parent.Files[Name.ToUpper()] = this;
}
}
public void Close()
{
int _t = 0;
if (Parent == null)
{
return;
}
if (!IsOpened)
{
return;
}
if (Self != null)
{
if (Self.is_destructed)
{
Self = null;
}
}
Self = null;
if (Parent.Data != null)
{
if (IsDataModified || IsHeaderModified)
{
if (IsDataModified)
{
StartData = Parent.WriteDataBlock(Data, StartData, SelfZipped);
}
if (IsHeaderModified)
{
MemoryStream hs = new MemoryStream();
hs.Write(BitConverter.GetBytes(TimeCreate.Ticks), 0, 8);
hs.Write(BitConverter.GetBytes(TimeModify.Ticks), 0, 8);
hs.Write(BitConverter.GetBytes(_t), 0, 4);
hs.Write(Encoding.UTF8.GetBytes(Name), 0, Name.Length);
hs.Write(BitConverter.GetBytes(_t), 0, 4);
StartHeader = Parent.WriteBlock(hs, StartHeader, false);
hs.Dispose();
}
}
}
Data.Dispose();
Data = null;
ISCatalog = FileIsCatalog.iscatalog_false;
IsOpened = false;
IsDataModified = false;
IsHeaderModified = false;
}
public int WriteAndClose(Stream _Stream, int Length = -1) // перезапись целиком и закрытие файла (для экономии памяти не используется data файла)
{
int _t = 0;
if (!IsOpened)
{
if (!Open())
{
return(0);
}
}
if (Parent == null)
{
return(0);
}
if (Self != null)
{
Self = null;
}
Data.Dispose();
Data = null;
if (Parent.Data != null)
{
StartData = Parent.WriteDataBlock(_Stream, StartData, SelfZipped, Length);
MemoryStream hs = new MemoryStream();
hs.Write(BitConverter.GetBytes(TimeCreate.Ticks), 0, 8);
hs.Write(BitConverter.GetBytes(TimeModify.Ticks), 0, 8);
hs.Write(BitConverter.GetBytes(_t), 0, 4);
hs.Write(Encoding.UTF8.GetBytes(Name), 0, Name.Length);
hs.Write(BitConverter.GetBytes(_t), 0, 4);
StartHeader = Parent.WriteBlock(hs, StartHeader, false);
hs.Dispose();
}
ISCatalog = FileIsCatalog.iscatalog_unknown;
IsOpened = false;
IsDataModified = false;
IsHeaderModified = false;
if (Length == -1)
{
return((int)_Stream.Length);
}
return(Length);
}
public void DeleteFile()
{
if (Parent != null)
{
if (Next != null)
{
Next.Previous = Previous;
}
else
{
Parent.Last = Previous;
}
if (Previous != null)
{
Previous.Next = Next;
}
else
{
Parent.First = Next;
}
Parent.is_fatmodified = true;
Parent.FreeBlock(StartData);
Parent.FreeBlock(StartHeader);
Parent.Files.Remove(Name.ToUpper());
Parent = null;
}
Data = null;
if (Self != null)
{
Self.Data = null;
Self = null;
}
ISCatalog = FileIsCatalog.iscatalog_false;
Next = null;
Previous = null;
IsOpened = false;
StartData = 0;
StartHeader = 0;
IsDataModified = false;
IsHeaderModified = false;
}
public bool IsCatalog()
{
int _filelen = 0;
int _startempty = -1;
byte[] _t = new byte[32];
byte[] _t4 = new byte[8];
if (ISCatalog == FileIsCatalog.iscatalog_unknown)
{
if (!IsOpened)
{
if (!Open())
{
return(false);
}
}
_filelen = (int)Data.Length;
if (_filelen == 16)
{
Data.Seek(0, SeekOrigin.Begin);
Data.Read(_t, 0, 16);
if (!ByteArrayCompare(_t, _empty_catalog_template))
{
ISCatalog = FileIsCatalog.iscatalog_false;
return(false);
}
else
{
ISCatalog = FileIsCatalog.iscatalog_true;
return(true);
}
}
Data.Seek(0, SeekOrigin.Begin);
Data.Read(_t4, 0, 4);
if (BitConverter.ToInt32(_t4, 0) != 0x7fffffff)
{
if (_startempty + 31 >= _filelen)
{
return(false);
}
Data.Seek(_startempty, SeekOrigin.Begin);
Data.Read(_t, 0, 31);
if (_t[0] != 0xd || _t[1] != 0xa || _t[10] != 0x20 || _t[19] != 0x20 || _t[28] != 0x20 || _t[29] != 0xd || _t[30] != 0xa)
{
ISCatalog = FileIsCatalog.iscatalog_false;
return(false);
}
}
if (_filelen < 31 + 16)
{
ISCatalog = FileIsCatalog.iscatalog_false;
return(false);
}
Data.Seek(16, SeekOrigin.Begin);
Data.Read(_t, 0, 31);
if (_t[0] != 0xd || _t[1] != 0xa || _t[10] != 0x20 || _t[19] != 0x20 || _t[28] != 0x20 || _t[29] != 0xd || _t[30] != 0xa)
{
ISCatalog = FileIsCatalog.iscatalog_false;
return(false);
}
ISCatalog = FileIsCatalog.iscatalog_true;
return(true);
}
return(ISCatalog == FileIsCatalog.iscatalog_true);
}