internal static bool IsValidDirectoryEntry(cSector Sector, int SubIndex, ushort SectorIndex, cFAT FAT)
{
if (SubIndex > Sector.Memory.Length)
{
return(false);
}
for (int i = 0; i < 6; i++)
{
if (Sector.Memory[SubIndex] == 0x0000) //Name
{
return(false);
}
}
uint TempSize = (uint)(Sector.Memory[SubIndex + 0xC] + (Sector.Memory[SubIndex + 0xD] << 16));
if ((TempSize == 0) && ((Sector.Memory[SubIndex + 0x5] & 0x0010) == 0))
{
return(false);
}
if (FAT.NextSector(SectorIndex) == 0x0000)
{
return(false);
}
return(true);
}
private bool ConvertEntrys(ushort SectorNumber, cFileSystemItem ItemToFill, uint Size)
{
if (ItemToFill.IsDirectory())
{
//ignore the first Entry, as it is isn't displayed in the logical structure
int SubIndex = ItemToFill.Metadata.GetBinaryEntrySize();
bool run = true;
while (run)
{
if (HeaderVerifier.IsValidDirectoryEntry(InputFloppy.Sectors[SectorNumber], SubIndex, SectorNumber, InputFAT))
{
//TODO: Read/write the datetimes
cFileFlags Flags = new cFileFlags();
Flags.ReadFromBinary((byte)InputFloppy.Sectors[SectorNumber].Memory[SubIndex + 5]);
ushort[] Data = new ushort[4];
Data[0] = InputFloppy.Sectors[SectorNumber].Memory[SubIndex + 0];
Data[1] = InputFloppy.Sectors[SectorNumber].Memory[SubIndex + 1];
Data[2] = InputFloppy.Sectors[SectorNumber].Memory[SubIndex + 2];
Data[3] = InputFloppy.Sectors[SectorNumber].Memory[SubIndex + 3];
string Name = cFileSigConverter.ConvertToFileName(Data);
Data = new ushort[2];
Data[0] = InputFloppy.Sectors[SectorNumber].Memory[SubIndex + 4];
Data[1] = InputFloppy.Sectors[SectorNumber].Memory[SubIndex + 5];
string Extention = cFileSigConverter.ConvertToFileExtention(Data);
cFileSystemItem NewItem = new cFileSystemItem(Name, Extention, Flags, false);
Size = (uint)((uint)InputFloppy.Sectors[SectorNumber].Memory[SubIndex + 13] << 16 |
(uint)InputFloppy.Sectors[SectorNumber].Memory[SubIndex + 12]);
if (ConvertEntrys(InputFloppy.Sectors[SectorNumber].Memory[SubIndex + 14], NewItem, Size))
{
ItemToFill.AddItem(NewItem);
}
SubIndex += ItemToFill.Metadata.GetBinaryEntrySize();
if (SubIndex >= InputFAT.GetSectorSize())
{
SubIndex = 0;
SectorNumber = InputFAT.NextSector(SectorNumber);
if (SectorNumber >= 0xFFF0)
{
run = false;
}
}
}
else
{
run = false;
}
}
return(true);
}
else
{
List <ushort> Data = new List <ushort>();
bool run = true;
uint i = 0;
while (run)
{
int subIndex = 0;
while (subIndex < 512 && i < Size)
{
Data.Add(InputFloppy.Sectors[SectorNumber].Memory[subIndex]);
i++;
subIndex++;
}
SectorNumber = InputFAT.NextSector(SectorNumber);
if (SectorNumber >= 0xFFF0)
{
run = false;
}
}
cFile Newfile = new cFile();
Newfile.SetFileData(Data);
ItemToFill.SetFile(Newfile);
return(true);
}
}
