68 lines
788 B
Go
68 lines
788 B
Go
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package pin
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import(
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"os"
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"fmt"
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"strconv"
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"log"
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)
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var(
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arg0 string
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delim rune = '\n'
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status int = 0
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)
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func
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usage() {
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fmt.Fprintf(os.Stderr, "usage: %s [n_utf8_chars] [len]\n", arg0)
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os.Exit(1)
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}
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func
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Pow(x, p int) int {
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ret := 1
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for i:=0 ; i<p ; i++ {
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ret *= x
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}
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return ret
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}
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func
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GetPin(s []rune, l int, i int) string {
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ret := ""
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slen := len(s)
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for j:=0 ; j<l ; j++ {
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ret += string(s[ ( i/Pow(slen, j) ) % slen] )
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}
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return ret
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}
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func
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printPins(s []rune, l int) {
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n := Pow(len(s), l)
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for i:=0 ; i<n ; i++ {
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fmt.Println(GetPin(s, l, i))
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}
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}
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func
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Run(args []string) int {
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arg0 = args[0]
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if len(args) < 3 {
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usage()
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}
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chrs := []rune(args[1])
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n, err := strconv.Atoi(args[2])
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if err!=nil {
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log.Fatal(err)
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}
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printPins(chrs, n)
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return status
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}
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