public override bool DeleteFile(GR.Memory.ByteBuffer Filename)
{
_LastError = "";
if (Filename.Compare(this.Filename) != 0)
{
_LastError = "file not found";
return(false);
}
Data.Clear();
return(true);
}
bool LocateFile(GR.Memory.ByteBuffer Filename, out Location FileLocation, out Types.FileInfo FileInfo)
{
_LastError = "";
FileLocation = null;
FileInfo = null;
Location curLoc = new Location(TRACK_DIRECTORY, SECTOR_DIRECTORY);
bool endFound = false;
while (!endFound)
{
Sector sec = Tracks[curLoc.Track - 1].Sectors[curLoc.Sector];
for (int i = 0; i < 8; ++i)
{
int fileTrack = sec.Data.ByteAt(0x20 * i + 3);
int fileSector = sec.Data.ByteAt(0x20 * i + 4);
if (fileTrack != 0)
{
// valid entry?
if (sec.Data.ByteAt(0x20 * i + 2) != (byte)C64Studio.Types.FileType.SCRATCHED)
{
GR.Memory.ByteBuffer filename = sec.Data.SubBuffer(0x20 * i + 5, 16);
if (Filename.Compare(filename) == 0)
{
FileLocation = new Location(fileTrack, fileSector);
FileInfo = new C64Studio.Types.FileInfo();
FileInfo.Filename = new GR.Memory.ByteBuffer(filename);
FileInfo.StartSector = fileSector;
FileInfo.StartTrack = fileTrack;
FileInfo.Type = (C64Studio.Types.FileType)sec.Data.ByteAt(0x20 * i + 2);
FileInfo.Blocks = 0;
return(true);
}
}
}
}
curLoc = sec.NextLocation;
if (curLoc == null)
{
// track = 0 marks last directory entry
break;
}
}
_LastError = "Could not locate directory entry for file";
return(false);
}
public override Types.FileInfo LoadFile(GR.Memory.ByteBuffer Filename)
{
_LastError = "";
if (Filename.Compare(this.Filename) != 0)
{
_LastError = "file not found";
return(null);
}
Types.FileInfo fileInfo = new C64Studio.Types.FileInfo();
fileInfo.Type = C64Studio.Types.FileType.PRG;
fileInfo.Data = new GR.Memory.ByteBuffer(Data);
fileInfo.Filename = new GR.Memory.ByteBuffer(Filename);
return(fileInfo);
}
