Exemple #1
0
        private bool FindNextDirEntry(DirEntryLocation DirEntry, out DirEntryLocation ResultDirEntry)
        {
            ResultDirEntry = null;

            if (DirEntry.DirEntry < 7)
            {
                ResultDirEntry = new DirEntryLocation(DirEntry.Track, DirEntry.Sector, DirEntry.DirEntry + 1);
                return(true);
            }
            Location nextSector = Tracks[DirEntry.Track - 1].Sectors[DirEntry.Sector].NextLocation;

            if (nextSector == null)
            {
                return(false);
            }
            Sector sec = Tracks[nextSector.Track - 1].Sectors[nextSector.Sector];

            ResultDirEntry = new DirEntryLocation(sec.TrackNo, sec.SectorNo, 0);
            return(true);
        }
Exemple #2
0
        public bool MoveFileUp(Types.FileInfo File)
        {
            _LastError = "";
            if (File.DirEntryIndex == 0)
            {
                return(false);
            }
            DirEntryLocation dirLocOrig = LocateDirEntry(File.DirEntryIndex);

            if (dirLocOrig == null)
            {
                return(false);
            }
            DirEntryLocation dirLocPrev = LocateDirEntry(File.DirEntryIndex - 1);
            Sector           secOrig    = Tracks[dirLocOrig.Track - 1].Sectors[dirLocOrig.Sector];
            Sector           secPrev    = Tracks[dirLocPrev.Track - 1].Sectors[dirLocPrev.Sector];

            // exchange dir entry content
            GR.Memory.ByteBuffer tempData = secOrig.Data.SubBuffer(0x20 * dirLocOrig.DirEntry + 2, 30);
            secPrev.Data.CopyTo(secOrig.Data, 0x20 * dirLocPrev.DirEntry + 2, 30, 0x20 * dirLocOrig.DirEntry + 2);
            tempData.CopyTo(secPrev.Data, 0, 30, 0x20 * dirLocPrev.DirEntry + 2);
            return(true);
        }