internal override int CabOpenStreamEx(string path, int openFlags, int shareMode, out int err, IntPtr pv)
{
if (CabNumbers.ContainsKey(path))
{
Stream stream = CabStream;
if (stream == null)
{
short cabNumber = CabNumbers[path];
stream = context.OpenArchiveReadStream(cabNumber, path, CabEngine);
if (stream == null)
{
throw new FileNotFoundException(String.Format(CultureInfo.InvariantCulture, "Cabinet {0} not provided.", cabNumber));
}
currentArchiveName = path;
currentArchiveNumber = cabNumber;
if (this.totalArchives <= currentArchiveNumber)
{
int totalArchives = currentArchiveNumber + 1;
this.totalArchives = (short)totalArchives;
}
currentArchiveTotalBytes = stream.Length;
currentArchiveBytesProcessed = 0;
if (folderId != -3) // -3 is a special folderId that requires re-opening the same cab
{
OnProgress(ArchiveProgressType.StartArchive);
}
CabStream = stream;
}
path = CabStreamName;
}
return(base.CabOpenStreamEx(path, openFlags, shareMode, out err, pv));
}
internal override int CabOpenStreamEx(string path, int openFlags, int shareMode, out int err, IntPtr pv)
{
if (CabNumbers.ContainsKey(path))
{
Stream stream = CabStream;
if (stream == null)
{
short cabNumber = CabNumbers[path];
currentFolderTotalBytes = 0;
stream = context.OpenArchiveWriteStream(cabNumber, path, true, CabEngine);
if (stream == null)
{
throw new FileNotFoundException(
String.Format(CultureInfo.InvariantCulture, "Cabinet {0} not provided.", cabNumber));
}
currentArchiveName = path;
currentArchiveTotalBytes = Math.Min(
totalFolderBytesProcessedInCurrentCab, maxCabBytes);
currentArchiveBytesProcessed = 0;
OnProgress(ArchiveProgressType.StartArchive);
CabStream = stream;
}
path = CabStreamName;
}
else if (path == TempStreamName)
{
// Opening memory stream for a temp file.
Stream stream = new MemoryStream();
tempStreams.Add(stream);
int streamHandle = StreamHandles.AllocHandle(stream);
err = 0;
return(streamHandle);
}
else if (path != CabStreamName)
{
// Opening a file on disk for a temp file.
path = Path.Combine(Path.GetTempPath(), path);
Stream stream = new FileStream(path, FileMode.Open, FileAccess.ReadWrite);
tempStreams.Add(stream);
stream = new DuplicateStream(stream);
int streamHandle = StreamHandles.AllocHandle(stream);
err = 0;
return(streamHandle);
}
return(base.CabOpenStreamEx(path, openFlags, shareMode, out err, pv));
}
