private bool pakItemExists(string qbFilename, PakHeaderItem exclude)
{
string fn = qbFilename.ToLower();
QbKey qk = QbKey.Create(fn);
foreach (PakHeaderItem phi in _pakFile.Headers.Values)
{
if (exclude != null && exclude == phi)
continue;
if (fn == phi.Filename.ToLower() || phi.PakFullFileNameQbKey == qk.Crc)
return true;
}
return false;
}