private bool IsCabinet(Stream cabStream, out short id, out int cabFolderCount, out int fileCount)
{
int streamHandle = StreamHandles.AllocHandle(cabStream);
try {
Erf.Clear();
NativeMethods.FDI.CABINFO fdici;
bool isCabinet = 0 != NativeMethods.FDI.IsCabinet(fdiHandle, streamHandle, out fdici);
if (Erf.Error)
{
if (((NativeMethods.FDI.ERROR)Erf.Oper) == NativeMethods.FDI.ERROR.UNKNOWN_CABINET_VERSION)
{
isCabinet = false;
}
else
{
throw new CabException(
Erf.Oper,
Erf.Type,
CabException.GetErrorMessage(Erf.Oper, Erf.Type, true));
}
}
id = fdici.setID;
cabFolderCount = fdici.cFolders;
fileCount = fdici.cFiles;
return(isCabinet);
} finally {
StreamHandles.FreeHandle(streamHandle);
}
}
private int CabExtractCloseFile(NativeMethods.FDI.NOTIFICATION notification)
{
Stream stream = StreamHandles[notification.hf];
StreamHandles.FreeHandle(notification.hf);
//bool execute = (notification.attribs & (ushort) FileAttributes.Device) != 0; // _A_EXEC
string name = GetFileName(notification);
FileAttributes attributes = (FileAttributes)notification.attribs &
(FileAttributes.Archive | FileAttributes.Hidden | FileAttributes.ReadOnly | FileAttributes.System);
if (attributes == 0)
{
attributes = FileAttributes.Normal;
}
DateTime lastWriteTime;
CompressionEngine.DosDateAndTimeToDateTime(notification.date, notification.time, out lastWriteTime);
stream.Flush();
context.CloseFileWriteStream(name, stream, attributes, lastWriteTime);
FileStream = null;
long remainder = currentFileTotalBytes - currentFileBytesProcessed;
currentFileBytesProcessed += remainder;
fileBytesProcessed += remainder;
OnProgress(ArchiveProgressType.FinishFile);
currentFileName = null;
return(1); // Continue
}
internal virtual int CabCloseStreamEx(int streamHandle, out int err, IntPtr pv)
{
StreamHandles.FreeHandle(streamHandle);
err = 0;
return(0);
}