public static PitData ParsePIT(string fileName)
{
PitData data2;
if (!File.Exists(fileName))
{
throw new Exception("The specified PIT file does not exist!");
}
using (FileStream stream4 = new FileStream(fileName, FileMode.OpenOrCreate, FileAccess.ReadWrite))
{
byte[] array = new byte[((int)(stream4.Length - 1L)) + 1];
byte[] buffer2 = new byte[0x1400];
byte[] pattern = new byte[] { 0x76, 0x98, 0x34, 0x12 };
byte[] buffer4 = new byte[0x100];
long num = 0L;
stream4.Read(array, 0, array.Length);
num = HelperUtils.FindByteOffset(array, pattern, 0);
buffer2 = HelperUtils.GetByteArray(array, ((int)num) - pattern.Length, buffer2.Length + 1);
stream4.Position = 0L;
stream4.SetLength((long)buffer2.Length);
stream4.Write(buffer2, 0, buffer2.Length);
stream4.Position = 0L;
PitInputStream inputStream = new PitInputStream(stream4);
data2 = new PitData();
if (!data2.ReadPITFile(inputStream))
{
throw new Exception("The specified PIT file contains corrupt or invalid data!");
}
MemoryStream byteStream = new MemoryStream();
PitOutputStream outputStream = new PitOutputStream(byteStream);
data2.WritePITFile(outputStream);
stream4.Position = 0L;
stream4.SetLength(byteStream.Length + buffer4.Length);
stream4.Write(byteStream.ToArray(), 0, (int)byteStream.Length);
}
return(data2);
}