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package main

import (
	"fmt"
	"os"
)

func usage() {
	fmt.Print("Usage:")
	fmt.Println("\tsignify -C [-q] -p pubkey -x sigfile [file ...]")
	fmt.Println("\tsignify -G [-n] [-c comment] -p pubkey -s seckey")
	fmt.Println("\tsignify -S [-ez] [-x sigfile] -s seckey -m message")
	fmt.Println("\tsignify -V [-eqz] [-p pubkey] [-t keytype] [-x sigfile] -m message")
	os.Exit(2)
}

var modes = map[string]func() error{
	"-C": check,
	"-G": generate,
	"-S": sign,
	"-V": verify,
}

func main() {
	if len(os.Args) < 2 {
		usage()
	}
	mode, ok := modes[os.Args[1]]
	if !ok {
		usage()
	}
	if err := mode(); err != nil {
		fmt.Println(err)
		os.Exit(1)
	}
}