private void AddFileSize(ref FolderSize sum, string path)
{
sum.fileCount++;
sum.logicalSize += (ulong)new FileInfo(path).Length;
try
{
ulong ps = ExtendedFileInfo.GetPhysicalFileSize(path);
sum.physicalSize += ps;
uint clusterSize = ExtendedFileInfo.GetClusterSize(path);
if (clusterSizeOverride != 0)
{
clusterSize = clusterSizeOverride;
}
ulong ds = ((ps + clusterSize - 1) / clusterSize) * clusterSize;
sum.diskSize += ds;
}
catch (Win32Exception ex)
{
throw new UnauthorizedAccessException("Cannot get file size: ", ex);
}
}