func blast(l *list.List, args []string) {
switch len(args) {
case 0:
fmt.Println("What item do you want to blast?")
os.Exit(0)
case 1:
// Check if first arg is int
n, err := strconv.Atoi(args[0])
if err != nil {
fmt.Printf("%q is not an item number.\n", args[0])
os.Exit(1)
}
// Make suer (n) > 1
if n < 1 {
fmt.Printf("%q is not an item number.\n", args[0])
os.Exit(1)
} else if n == l.Len() {
fmt.Println("Can't blast last item.")
os.Exit(1)
} else if n > l.Len() {
fmt.Printf("item [%d] is out of bounds.\n", n)
os.Exit(1)
}
// Bump item (n)
// Grab item n
itemNumber, element := 1, l.Front()
for itemNumber < n {
element = element.Next()
itemNumber++
}
// Update date
element.Value.(ListItem)[DATE] = time.Now().Format(DATE_FORMAT)
// Move it to the front
l.MoveToBack(element)
fmt.Printf("Blasting item [%d]\n", n)
default:
fmt.Println("Too many arguments.")
os.Exit(1)
}
}