public void Import(string filename)
{
if (!File.Exists(filename))
{
throw new FileNotFoundException();
}
using (FileStream file = File.OpenRead(filename))
{
uint hCRC32 = 0, fCRC32 = 0;
byte[] CRC32_check;
// header
byte[] word_magic = FileIO.ReadChunk(file, file_word_magic.Length, ref hCRC32, ref fCRC32);
if (!Win32.ByteArrayCompare(word_magic, file_word_magic))
{
throw new InvalidDataException();
}
byte ver_write = FileIO.ReadChunk(file, 0x1, ref hCRC32, ref fCRC32)[0];
byte ver_read = FileIO.ReadChunk(file, 0x1, ref hCRC32, ref fCRC32)[0];
byte endianness = FileIO.ReadChunk(file, 0x1, ref hCRC32, ref fCRC32)[0];
uint off_meta = BitConverter.ToUInt32(FileIO.ReadChunk(file, 0x4, ref hCRC32, ref fCRC32), 0);
uint off_def = BitConverter.ToUInt32(FileIO.ReadChunk(file, 0x4, ref hCRC32, ref fCRC32), 0);
uint off_body = BitConverter.ToUInt32(FileIO.ReadChunk(file, 0x4, ref hCRC32, ref fCRC32), 0);
uint len_data = BitConverter.ToUInt32(FileIO.ReadChunk(file, 0x4, ref hCRC32, ref fCRC32), 0);
CRC32_check = FileIO.ReadChunk(file, 0x4, ref fCRC32);
if (Crc32Algorithm.Append(hCRC32, CRC32_check) != 0x2144DF1C)
{
throw new InvalidDataException();
}
// meta
byte[] in_meta_player = FileIO.ReadChunk(file, 0x20, ref fCRC32);
byte in_meta_track = FileIO.ReadChunk(file, 0x1, ref fCRC32)[0];
byte in_meta_vehicle = FileIO.ReadChunk(file, 0x1, ref fCRC32)[0];
byte[] in_meta_upgrade_level = FileIO.ReadChunk(file, 0x7, ref fCRC32);
byte[] in_meta_upgrade_health = FileIO.ReadChunk(file, 0x7, ref fCRC32);
// def
List <DataCollection.DataBlock.Path> in_path = new List <DataCollection.DataBlock.Path>();
List <uint> in_offset = new List <uint>();
List <uint> in_length = new List <uint>();
while (file.Position < off_body)
{
in_path.Add((DataCollection.DataBlock.Path)FileIO.ReadChunk(file, 0x1, ref fCRC32)[0]);
in_offset.Add(BitConverter.ToUInt32(FileIO.ReadChunk(file, 0x4, ref fCRC32), 0));
in_length.Add(BitConverter.ToUInt32(FileIO.ReadChunk(file, 0x4, ref fCRC32), 0));
}
// body
List <DataCollection> in_frame = new List <DataCollection>();
while (file.Position < off_meta + len_data)
{
DataCollection frame = new DataCollection();
for (int i = 0; i < in_path.Count; i++)
{
byte[] in_data = FileIO.ReadChunk(file, (int)in_length[i], ref fCRC32);
DataCollection.DataBlock block = new DataCollection.DataBlock(in_data, in_path[i], in_offset[i]);
frame.data.Add(block);
}
in_frame.Add(frame);
}
// footer
CRC32_check = FileIO.ReadChunk(file, 0x4);
if (Crc32Algorithm.Append(fCRC32, CRC32_check) != 0x2144DF1C)
{
throw new InvalidDataException();
}
byte[] word_eof = FileIO.ReadChunk(file, file_word_eof.Length);
if (!Win32.ByteArrayCompare(word_eof, file_word_eof))
{
throw new InvalidDataException();
}
// output
meta_track = in_meta_track;
meta_vehicle = in_meta_vehicle;
meta_player = in_meta_player;
meta_upgrade_level = in_meta_upgrade_level;
meta_upgrade_health = in_meta_upgrade_health;
data.Clear();
foreach (DataCollection frame in in_frame)
{
data.Add(frame);
}
initialized = true;
}
}