public void NextFile()
{
if (cabFile != null)
{
cabFile.Dispose();
}
++volumeNumber;
cabFile = GlobalFileSystem.Open("{0}{1}.cab".F(commonName, volumeNumber));
if (cabFile.ReadUInt32() != 0x28635349)
{
throw new InvalidDataException("Not an Installshield CAB package");
}
uint fileOffset;
if ((fileDes.Flags & FileSplit) != 0)
{
cabFile.Seek(CommonHeader.Size, SeekOrigin.Current);
var head = new VolumeHeader(cabFile);
if (index == head.LastFileIndex)
{
if ((fileDes.Flags & FileCompressed) != 0)
{
RemainingArchiveStream = head.LastFileSizeCompressed;
}
else
{
RemainingArchiveStream = head.LastFileSizeExpanded;
}
fileOffset = head.LastFileOffset;
}
else if (index == head.FirstFileIndex)
{
if ((fileDes.Flags & FileCompressed) != 0)
{
RemainingArchiveStream = head.FirstFileSizeCompressed;
}
else
{
RemainingArchiveStream = head.FirstFileSizeExpanded;
}
fileOffset = head.FirstFileOffset;
}
else
{
throw new Exception("Cannot Resolve Remaining Stream");
}
}
else
{
if ((fileDes.Flags & FileCompressed) != 0)
{
RemainingArchiveStream = fileDes.CompressedSize;
}
else
{
RemainingArchiveStream = fileDes.ExpandedSize;
}
fileOffset = fileDes.DataOffset;
}
cabFile.Seek(fileOffset, SeekOrigin.Begin);
}
public void Write(Dictionary <string, byte[]> contents)
{
GlobalFileSystem.Unmount(this);
throw new NotImplementedException("Updating bag files unsupported");
}
