func ReadRide(filename string) *Ride {
encodedBits, err := ioutil.ReadFile(filename)
bitsWithoutChecksum := encodedBits[:len(encodedBits)-4]
if err != nil {
panic(err)
}
z := rle.NewReader(bytes.NewReader(bitsWithoutChecksum))
if err != nil {
panic(err)
}
var bitbuffer bytes.Buffer
bitbuffer.ReadFrom(z)
decrypted := bitbuffer.Bytes()
// r is a pointer
r := new(Ride)
Unmarshal(decrypted, r)
if DEBUG {
begin := 0xa2 + 2*len(r.TrackData.Elements) - 3
for i := begin; i < begin+DEBUG_LENGTH; i++ {
// encode the value of i as hex
if i > len(decrypted) {
continue
}
ds := hex.EncodeToString([]byte{byte(i)})
bitValueInHex := hex.EncodeToString([]byte{decrypted[i]})
fmt.Printf("%s: %s\n", ds, bitValueInHex)
}
}
return r
}
func readRaptor() Ride {
encodedBits, err := ioutil.ReadFile("rides/raptor.td4")
if err != nil {
panic(err)
}
z := rle.NewReader(bytes.NewReader(encodedBits))
if err != nil {
panic(err)
}
var bitbuffer bytes.Buffer
bitbuffer.ReadFrom(z)
decrypted := bitbuffer.Bytes()
for i := 0; i < 40; i++ {
// encode the value of i as hex
ds := hex.EncodeToString([]byte{byte(i)})
bitValueInHex := hex.EncodeToString([]byte{decrypted[i]})
fmt.Printf("%s: %s\n", ds, bitValueInHex)
}
// r is a pointer
r := new(Ride)
Unmarshal(decrypted, r)
bits, err := Marshal(r)
fmt.Println(bits)
return *r
}
func main() {
filename := flag.String("filename", "", "td6 file to decode")
flag.Parse()
if *filename == "" {
log.Fatal("please enter a filename")
}
f, err := os.Open(*filename)
if err != nil {
log.Fatal(err)
}
reader := rle.NewReader(f)
// xxx is there a better way to do this?
rr := io.TeeReader(reader, os.Stdout)
var bitbuffer bytes.Buffer
bitbuffer.ReadFrom(rr)
}