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);
}
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);
}