private void GetData()
{
try
{
if (Data == null)
{
Data = new byte[Size];
var dataPtr = Marshal.AllocHGlobal(Size);
int num;
DatExport.GetSubfileData(_handle, (int)FileId, dataPtr, 0, out num);
Marshal.Copy(dataPtr, Data, 0, Size);
Marshal.FreeHGlobal(dataPtr);
if (IsCompressed)
{
Data = Decompress();
}
}
IsValid = true;
}
catch
{
Logger.Write($"файл #{FileId} повреждён, пропускаю.");
}
}
internal Subfile(int handle, uint fileId, int size, int iteration, int version)
{
_handle = handle;
FileId = fileId;
Size = size;
Iteration = iteration;
Version = version;
IsCompressed = 1 == DatExport.GetSubfileCompressionFlag(_handle, (int)fileId);
GetData();
CheckHeader();
}
private void Load()
{
var count = DatExport.GetNumSubfiles(_handle);
for (var i = 0; i < count; ++i)
{
int fileId;
int size;
int iteration;
DatExport.GetSubfileSizes(_handle, out fileId, out size, out iteration, i, 1);
SubfileInfo.Add((uint)fileId, new SubfileInfo((uint)fileId, size, iteration));
}
}
public Subfile this[uint index]
{
get
{
Subfile subfile = null;
if (SubfileInfo.ContainsKey(index))
{
var si = SubfileInfo[index];
subfile = new Subfile(_handle, index, si.Size, si.Iteration, DatExport.GetSubfileVersion(_handle, (int)index));
}
return(subfile);
}
}
private byte[] Decompress()
{
var size = Data.Length;
var num = Data[3] << 24 | Data[2] << 16 | Data[1] << 8 | Data[0];
var num2 = size - 4;
var array2 = new byte[num];
var array3 = new byte[num2];
for (var j = 4; j < size; j++)
{
array3[j - 4] = Data[j];
}
DatExport.uncompress(array2, ref num, array3, num2);
return(array2);
}
public void Open(string path, bool readOnly)
{
// detect
ClientDat = ClientDat.WhoIs(path);
// open
_handle = AllocHandle();
try
{
var datIdStamp = new StringBuilder(64);
var firstIterGuid = new StringBuilder(64);
uint num = 130u;
if (readOnly)
{
num |= 4u;
}
int num2;
int num3;
int num4;
int num5;
ulong num6;
if (DatExport.OpenDatFile(_handle, path, num, out num2, out num3, out num4, out num5, out num6, datIdStamp, firstIterGuid) == -1)
{
throw new DatFileException("Unable to open file [ " + path + " ]");
}
Load();
}
catch
{
FreeHandle(_handle);
throw;
}
}
public void Close()
{
DatExport.CloseDatFile(_handle);
}
public void Flush()
{
DatExport.Flush(_handle);
}
public int Purge(uint id)
{
return(DatExport.PurgeSubfileData(_handle, (int)id));
}
public int Put(uint id, IntPtr buffer, int offset, int size, int version, int iteration, bool compress = false)
{
return(DatExport.PutSubfileData(_handle, (int)id, buffer, offset, size, version, iteration, compress));
}
