private void ReadFileSystemData(byte[] buffer, int fsOffset, XDvdFsFileSystemEntry parentEntry, ISOFileStreamer ifs)
{
if (fsOffset > buffer.Length)
{
throw new SystemException("Disaster");
}
XFSInputFile ifile = new XFSInputFile(this, buffer, fsOffset);
XDvdFsFileSystemEntry entry = new XDvdFsFileSystemEntry(ifile);
entry.ParentNode = parentEntry;
ushort num = BitConverter.ToUInt16(buffer, fsOffset);
ushort num2 = BitConverter.ToUInt16(buffer, fsOffset + 2);
if (ifile.StartSector == -1)
{
throw new SystemException("Invalid TOC entry");
}
if (num != 0)
{
if ((num * 4) > buffer.Length)
{
throw new SystemException("Disaster 2!");
}
this.ReadFileSystemData(buffer, num * 4, parentEntry, ifs);
}
if (ifile.IsFolder())
{
if ((ifile.StartSector == 0) || (ifile.GetFileLength() == 0L))
{
parentEntry.Files.Add(entry);
}
else
{
byte[] buffer2 = new byte[ifile.GetFileLength()];
ifs.GetNewFile(ifile);
ifs.Read(buffer2, 0, (int)ifile.GetFileLength());
parentEntry.Files.Add(entry);
this.ReadFileSystemData(buffer2, 0, entry, ifs);
}
}
else
{
parentEntry.Files.Add(entry);
}
if (num2 != 0)
{
if ((num2 * 4) > buffer.Length)
{
throw new SystemException("Disaster 3!");
}
this.ReadFileSystemData(buffer, num2 * 4, parentEntry, ifs);
}
}
public void GetNewFile(XFSInputFile xfs)
{
this.startOffset = xfs.StartSector * 0x800L;
this.startOffset += this._fsOffset;
this.length = xfs.GetFileLength();
this.position = 0L;
}
public ISOFileStreamer(XFSInputFile xfs, long FileSystemOffset, BinaryReader instream)
{
this.startOffset = xfs.StartSector * 0x800L;
this._fsOffset = FileSystemOffset;
this.startOffset += this._fsOffset;
this.length = xfs.GetFileLength();
this.instream = instream;
}