tikedit

package main

import (
    "fmt"
    "os"
    "log"
    "strings"
    "encoding/hex"
)

func terr(err error) {
    if err != nil {log.Fatal(err)}
}

func main() {
    A := os.Args[1:]
    if len(A) == 0 {
        fmt.Println("Usage:")
        fmt.Println(" tikedit key")
        return
    }

    str := strings.Join(A, "")

    hexx, err := hex.DecodeString(str)
    terr(err)
    if len(hexx) != 16 {
        log.Fatal("key should be a 32 digit hex number")
    }

    f, err := os.OpenFile("title.tik", os.O_RDWR|os.O_CREATE, 0755)
    terr(err)
    defer f.Close()
    _,err = f.WriteAt(hexx, 447)
    terr(err)
}