private unsafe void ParseIndex(string idx)
{
using (var fs = new FileStream(idx, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
using (var br = new BinaryReader(fs))
{
int h2Len = br.ReadInt32();
int h2Check = br.ReadInt32();
byte[] h2 = br.ReadBytes(h2Len);
long padPos = (8 + h2Len + 0x0F) & 0xFFFFFFF0;
fs.Position = padPos;
int dataLen = br.ReadInt32();
int dataCheck = br.ReadInt32();
int numBlocks = dataLen / 18;
//byte[] buf = new byte[8];
for (int i = 0; i < numBlocks; i++)
{
IndexEntry info = new IndexEntry();
byte[] keyBytes = br.ReadBytes(9);
Array.Resize(ref keyBytes, 16);
MD5Hash key;
fixed(byte *ptr = keyBytes)
key = *(MD5Hash *)ptr;
byte indexHigh = br.ReadByte();
int indexLow = br.ReadInt32BE();
info.Index = (indexHigh << 2 | (byte)((indexLow & 0xC0000000) >> 30));
info.Offset = (indexLow & 0x3FFFFFFF);
//for (int j = 3; j < 8; j++)
// buf[7 - j] = br.ReadByte();
//long val = BitConverter.ToInt64(buf, 0);
//info.Index = (int)(val / 0x40000000);
//info.Offset = (int)(val % 0x40000000);
info.Size = br.ReadInt32();
// duplicate keys wtf...
//IndexData[key] = info; // use last key
if (!LocalIndexData.ContainsKey(key)) // use first key
{
LocalIndexData.Add(key, info);
}
}
padPos = (dataLen + 0x0FFF) & 0xFFFFF000;
fs.Position = padPos;
fs.Position += numBlocks * 18;
//for (int i = 0; i < numBlocks; i++)
//{
// var bytes = br.ReadBytes(18); // unknown data
//}
//if (fs.Position != fs.Length)
// throw new Exception("idx file under read");
}
}
