string Cartridge::autodetectType()

in atari_py/ale_interface/src/emucore/Cart.cxx [174:284]
102 lines of code
37 McCabe index (conditional complexity)

string Cartridge::autodetectType(const uInt8* image, uInt32 size)
{
  // Guess type based on size
  const char* type = 0;

  if((size % 8448) == 0)
  {
    type = "AR";
  }
  else if((size == 2048) ||
          (size == 4096 && memcmp(image, image + 2048, 2048) == 0))
  {
    if(isProbablyCV(image, size))
      type = "CV";
    else
      type = "2K";
  }
  else if(size == 4096)
  {
    if(isProbablyCV(image, size))
      type = "CV";
    else
      type = "4K";
  }
  else if(size == 8192)  // 8K
  {
    if(isProbablySC(image, size))
      type = "F8SC";
    else if(memcmp(image, image + 4096, 4096) == 0)
      type = "4K";
    else if(isProbablyE0(image, size))
      type = "E0";
    else if(isProbably3E(image, size))
      type = "3E";
    else if(isProbably3F(image, size))
      type = "3F";
    else if(isProbablyUA(image, size))
      type = "UA";
    else if(isProbablyFE(image, size))
      type = "FE";
    else
      type = "F8";
  }
  else if((size == 10495) || (size == 10496) || (size == 10240))  // 10K - Pitfall2
  {
    type = "DPC";
  }
  else if(size == 12288)  // 12K
  {
    // TODO - this should really be in a method that checks the first
    // 512 bytes of ROM and finds if either the lower 256 bytes or
    // higher 256 bytes are all the same.  For now, we assume that
    // all carts of 12K are CBS RAM Plus/FASC.
    type = "FASC";
  }
  else if(size == 16384)  // 16K
  {
    if(isProbablySC(image, size))
      type = "F6SC";
    else if(isProbablyE7(image, size))
      type = "E7";
    else if(isProbably3E(image, size))
      type = "3E";
    else if(isProbably3F(image, size))
      type = "3F";
    else
      type = "F6";
  }
  else if(size == 32768)  // 32K
  {
    if(isProbablySC(image, size))
      type = "F4SC";
    else if(isProbably3E(image, size))
      type = "3E";
    else if(isProbably3F(image, size))
      type = "3F";
    else
      type = "F4";
  }
  else if(size == 65536)  // 64K
  {
    // TODO - autodetect 4A50
    if(isProbably3E(image, size))
      type = "3E";
    else if(isProbably3F(image, size))
      type = "3F";
    else
      type = "MB";
  }
  else if(size == 131072)  // 128K
  {
    // TODO - autodetect 4A50
    if(isProbably3E(image, size))
      type = "3E";
    else if(isProbably3F(image, size))
      type = "3F";
    else
      type = "MC";
  }
  else  // what else can we do?
  {
    if(isProbably3E(image, size))
      type = "3E";
    else if(isProbably3F(image, size))
      type = "3F";
    else
      type = "4K";  // Most common bankswitching type
  }

  return type;
}