private static IFdsBlock[] DumpFast(IFamicomDumperConnectionExt dumper, bool dumpHiddenFiles = false, bool printDiskInfo = false)
{
Console.Write($"Reading disk... ");
var blocks = dumper.ReadFdsBlocks().ToArray();
Console.WriteLine($"Done");
List <IFdsBlock> result = new();
if (blocks.Length == 0)
{
throw new IOException("Invalid disk info block");
}
if (!blocks[0].CrcOk)
{
throw new IOException($"Invalid CRC on disk info block");
}
var fdsBlockDiskInfo = FdsBlockDiskInfo.FromBytes(blocks[0].Data);
if (!fdsBlockDiskInfo.IsValid)
{
throw new IOException($"Invalid disk info block type");
}
if (printDiskInfo)
{
PrintDiskHeaderInfo(fdsBlockDiskInfo);
}
result.Add(fdsBlockDiskInfo);
if (blocks.Length == 1)
{
throw new IOException("Invalid file amount block");
}
if (!blocks[1].CrcOk)
{
throw new IOException($"Invalid CRC on file amount block");
}
var fdsBlockFileAmount = FdsBlockFileAmount.FromBytes(blocks[1].Data);
if (!fdsBlockFileAmount.IsValid)
{
throw new IOException($"Invalid file amount block type");
}
var fileAmount = fdsBlockFileAmount.FileAmount;
byte visibleBlockAmount = (byte)(2 + fileAmount * 2);
if (printDiskInfo)
{
Console.WriteLine($"Number of non-hidden files: {fileAmount}");
}
result.Add(fdsBlockFileAmount);
// Check files and print info
for (int blockNumber = 2; blockNumber < (dumpHiddenFiles ? blocks.Length : visibleBlockAmount); blockNumber++)
{
if (!blocks[blockNumber].CrcOk)
{
if (blocks.Length < visibleBlockAmount)
{
throw new IOException($"Invalid CRC on block #{blockNumber} (file #{(blockNumber - 2) / 2})");
}
else
{
if (printDiskInfo)
{
Console.WriteLine($"Invalid CRC on block #{blockNumber}, it's not hidden file, aboritng");
}
break;
}
}
IFdsBlock block = (blockNumber % 2 == 0)
? FdsBlockFileHeader.FromBytes(blocks[blockNumber].Data)
: FdsBlockFileData.FromBytes(blocks[blockNumber].Data);
if (!block.IsValid)
{
if (blocks.Length < visibleBlockAmount)
{
throw new IOException($"Invalid block #{blockNumber} (file #{(blockNumber - 2) / 2}) type");
}
else
{
break;
}
}
if (block is FdsBlockFileHeader && printDiskInfo)
{
Console.WriteLine($"File #{(blockNumber - 2) / 2}/{fileAmount}:");
PrintFileHeaderInfo(block as FdsBlockFileHeader);
}
result.Add(block);
}
if (blocks.Length < visibleBlockAmount)
{
throw new IOException($"Only {(blocks.Length - 2) / 2} of {fileAmount} valid files received");
}
if (dumpHiddenFiles && printDiskInfo)
{
Console.WriteLine($"Number of hidden files: {(blocks.Length - 2) / 2 - fileAmount}");
}
return(result.ToArray());
}
private static IEnumerable <IFdsBlock> DumpSlow(IFamicomDumperConnectionExt dumper, bool dumpHiddenFiles = false, bool printDiskInfo = false)
{
var result = new List <IFdsBlock>();
byte blockNumber = 0;
byte fileAmount = 0;
byte visibleBlockAmount = 0;
while (true)
{
switch (blockNumber)
{
case 0:
Console.Write("Reading block #0 (disk info block)... ");
break;
case 1:
Console.Write("Reading block #1 (file amount block)... ");
break;
default:
if ((blockNumber % 2) == 0)
{
Console.Write($"Reading block #{blockNumber} (file #{(blockNumber - 2) / 2}/{(result[1] as FdsBlockFileAmount).FileAmount} header block)... ");
}
else
{
Console.Write($"Reading block #{blockNumber} (file #{(blockNumber - 2) / 2}/{(result[1] as FdsBlockFileAmount).FileAmount} data block)... ");
}
break;
}
var fdsData = dumper.ReadFdsBlocks(blockNumber, 1);
if (fdsData.Length == 0)
{
throw new IOException($"Can't read block #{blockNumber}");
}
if (!fdsData[0].CrcOk)
{
switch (blockNumber)
{
case 0:
throw new IOException($"Invalid CRC on disk info block");
case 1:
throw new IOException($"Invalid CRC on file amount block");
}
// Fatal error if bad CRC on non-hidden file
if (result.Count < visibleBlockAmount)
{
throw new IOException($"Invalid CRC on block");
}
else
{
break;
}
}
IFdsBlock block;
switch (blockNumber)
{
case 0:
block = FdsBlockDiskInfo.FromBytes(fdsData[0].Data);
break;
case 1:
block = FdsBlockFileAmount.FromBytes(fdsData[0].Data);
fileAmount = (block as FdsBlockFileAmount).FileAmount;
visibleBlockAmount = (byte)(2 + fileAmount * 2);
break;
default:
if ((blockNumber % 2) == 0)
{
block = FdsBlockFileHeader.FromBytes(fdsData[0].Data);
}
else
{
block = FdsBlockFileData.FromBytes(fdsData[0].Data);
}
break;
}
if (!block.IsValid)
{
switch (block.GetType().Name)
{
case nameof(FdsBlockDiskInfo):
throw new IOException($"Invalid disk info block");
case nameof(FdsBlockFileAmount):
throw new IOException($"Invalid file amount block");
}
// Fatal error if bad block ID on non-hidden file
if (result.Count < visibleBlockAmount)
{
throw new IOException($"Invalid block");
}
else
{
break;
}
}
result.Add(block);
Console.WriteLine($"OK");
// Some info
if (printDiskInfo)
{
switch (blockNumber)
{
case 0:
PrintDiskHeaderInfo(block as FdsBlockDiskInfo);
break;
case 1:
Console.WriteLine($"Number of non-hidden files: {fileAmount}");
break;
default:
if ((blockNumber % 2) == 0)
{
Console.WriteLine($"File #{(blockNumber - 2) / 2}:");
PrintFileHeaderInfo(block as FdsBlockFileHeader);
}
break;
}
}
// Abort if last file dumped
if (!dumpHiddenFiles && (result.Count >= 2) && (result.Count >= visibleBlockAmount))
{
break;
}
blockNumber++;
}
if (dumpHiddenFiles)
{
Console.WriteLine($"Number of hidden files: {(result.Count - 2) / 2 - (result[1] as FdsBlockFileAmount).FileAmount}");
}
return(result);
}
