public static uint HashFilename(string filename)
{
//if (filename.Length > 12)
// filename = filename.Substring(0, 12);
filename = filename.ToUpperInvariant();
int l = filename.Length;
int a = l >> 2;
if ((l & 3) != 0)
{
filename += (char)(l - (a << 2));
int i = 3 - (l & 3);
while (i-- != 0)
{
filename += filename[a << 2];
}
}
return(CRC32.CalculateCrc(Encoding.ASCII.GetBytes(filename)));
}
