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package main
import (
"flag"
"fmt"
"github.com/dchest/captcha"
"io"
"log"
"os"
)
var (
flagImage = flag.Bool("i", true, "output image captcha")
flagAudio = flag.Bool("a", false, "output audio captcha")
flagLen = flag.Int("len", captcha.StdLength, "length of captcha")
flagImgW = flag.Int("width", captcha.StdWidth, "image captcha width")
flagImgH = flag.Int("height", captcha.StdHeight, "image captcha height")
)
func usage() {
fmt.Fprintf(os.Stderr, "usage: captcha [flags] filename\n")
flag.PrintDefaults()
}
func main() {
flag.Parse()
fname := flag.Arg(0)
if fname == "" {
usage()
os.Exit(1)
}
f, err := os.Create(fname)
if err != nil {
log.Fatalf("%s", err)
}
defer f.Close()
var w io.WriterTo
var ns []byte
switch {
case *flagAudio:
w, ns = captcha.NewRandomAudio(*flagLen)
case *flagImage:
w, ns = captcha.NewRandomImage(*flagLen, *flagImgW, *flagImgH)
}
_, err = w.WriteTo(f)
if err != nil {
log.Fatalf("%s", err)
}
fmt.Println(ns)
}