public static Td0Serializer.TD0_MAIN_HEADER Deserialize(Stream stream)
{
Td0Serializer.TD0_MAIN_HEADER td0_MAIN_HEADER = new Td0Serializer.TD0_MAIN_HEADER();
stream.Read(td0_MAIN_HEADER._buffer, 0, td0_MAIN_HEADER._buffer.Length);
ushort @uint = FormatSerializer.getUInt16(td0_MAIN_HEADER._buffer, 0);
if (@uint != 17492 && @uint != 25716)
{
Logger.GetLogger().LogError("TD0 loader: Invalid header ID");
PlatformFactory.Platform.ShowWarning("Invalid header ID", "TD0 loader");
return(null);
}
ushort num = Td0Serializer.CalculateTD0CRC(td0_MAIN_HEADER._buffer, 0, td0_MAIN_HEADER._buffer.Length - 2);
ushort uint2 = FormatSerializer.getUInt16(td0_MAIN_HEADER._buffer, 10);
if (uint2 != num)
{
Logger.GetLogger().LogWarning(string.Concat(new string[]
{
"TD0 loader: Main header had bad CRC=0x",
num.ToString("X4"),
" (stamp crc=0x",
uint2.ToString("X4"),
")"
}));
PlatformFactory.Platform.ShowWarning("Wrong main header CRC", "TD0 loader");
}
return(td0_MAIN_HEADER);
}
private bool loadData(Stream stream)
{
Td0Serializer.TD0_MAIN_HEADER td0_MAIN_HEADER = Td0Serializer.TD0_MAIN_HEADER.Deserialize(stream);
if (td0_MAIN_HEADER == null)
{
return(false);
}
if (td0_MAIN_HEADER.Ver > 21 || td0_MAIN_HEADER.Ver < 10)
{
PlatformFactory.Platform.ShowWarning("Format version is not supported [0x" + td0_MAIN_HEADER.Ver.ToString("X2") + "]", "TD0 loader");
return(false);
}
if (td0_MAIN_HEADER.DataDOS != 0)
{
PlatformFactory.Platform.ShowWarning("'DOS Allocated sectors were copied' option is not supported!", "TD0 loader");
return(false);
}
Stream stream2 = stream;
if (td0_MAIN_HEADER.IsAdvandcedCompression)
{
if (td0_MAIN_HEADER.Ver < 20)
{
PlatformFactory.Platform.ShowWarning("Old Advanced compression is not implemented!", "TD0 loader");
return(false);
}
stream2 = new LzssHuffmanStream(stream);
}
string description = string.Empty;
if ((td0_MAIN_HEADER.Info & 128) != 0)
{
byte[] array = new byte[4];
stream2.Read(array, 0, 2);
stream2.Read(array, 2, 2);
byte[] array2 = new byte[(int)(FormatSerializer.getUInt16(array, 2) + 10)];
for (int i = 0; i < 4; i++)
{
array2[i] = array[i];
}
stream2.Read(array2, 4, 6);
stream2.Read(array2, 10, array2.Length - 10);
if (Td0Serializer.CalculateTD0CRC(array2, 2, (int)(8 + FormatSerializer.getUInt16(array2, 2))) != FormatSerializer.getUInt16(array2, 0))
{
PlatformFactory.Platform.ShowWarning("Info crc wrong", "TD0 loader");
}
StringBuilder stringBuilder = new StringBuilder();
int num = 10;
for (int j = 10; j < array2.Length; j++)
{
if (array2[j] == 0 && j > num)
{
stringBuilder.Append(Encoding.ASCII.GetString(array2, num, j - num));
stringBuilder.Append("\n");
num = j + 1;
}
}
description = stringBuilder.ToString();
}
int num2 = -1;
int num3 = -1;
ArrayList arrayList = new ArrayList();
for (;;)
{
Td0Serializer.TD0_TRACK td0_TRACK = Td0Serializer.TD0_TRACK.Deserialize(stream2);
if (td0_TRACK.SectorCount == 255)
{
break;
}
arrayList.Add(td0_TRACK);
if (num2 < td0_TRACK.Cylinder)
{
num2 = td0_TRACK.Cylinder;
}
if (num3 < td0_TRACK.Side)
{
num3 = td0_TRACK.Side;
}
}
num2++;
num3++;
if (num2 < 1 || num3 < 1)
{
PlatformFactory.Platform.ShowWarning("Invalid disk structure", "td0");
return(false);
}
this._diskImage.Init(num2, num3);
foreach (object obj in arrayList)
{
Td0Serializer.TD0_TRACK td0_TRACK2 = (Td0Serializer.TD0_TRACK)obj;
this._diskImage.GetTrackImage(td0_TRACK2.Cylinder, td0_TRACK2.Side).AssignSectors(td0_TRACK2.SectorList);
}
this._diskImage.Description = description;
return(true);
}