public HfsPlusFileSystemImpl(Stream s)
: base(new DiscFileSystemOptions())
{
s.Position = 1024;
byte[] headerBuf = Utilities.ReadFully(s, 512);
VolumeHeader hdr = new VolumeHeader();
hdr.ReadFrom(headerBuf, 0);
Context = new HfsPlus.Context();
Context.VolumeStream = s;
Context.VolumeHeader = hdr;
FileBuffer catalogBuffer = new FileBuffer(Context, hdr.CatalogFile);
Context.Catalog = new BTree <CatalogKey>(catalogBuffer);
// Establish Root directory
byte[] rootThreadData = Context.Catalog.Find(new CatalogKey(CatalogNodeId.RootFolderId, string.Empty));
CatalogThread rootThread = new CatalogThread();
rootThread.ReadFrom(rootThreadData, 0);
byte[] rootDirEntryData = Context.Catalog.Find(new CatalogKey(rootThread.ParentId, rootThread.Name));
DirEntry rootDirEntry = new DirEntry(rootThread.Name, rootDirEntryData);
RootDirectory = (Directory)GetFile(rootDirEntry);
}
internal static bool Detect(Stream stream)
{
if (stream.Length < 1536)
{
return(false);
}
stream.Position = 1024;
byte[] headerBuf = Utilities.ReadFully(stream, 512);
VolumeHeader hdr = new VolumeHeader();
hdr.ReadFrom(headerBuf, 0);
return(hdr.IsValid);
}