package exit

import (
	"errors"
	"fmt"
	"os"
	"strconv"
)

func Exec(args []string) error {
	if len(args) > 1 {
		return errors.New("exit: ")
	}

	code := 0
	if len(args) > 0 {
		number, err := strconv.ParseUint(args[0], 10, 7)
		if err != nil || number > 125 {
			return fmt.Errorf("exit: %s must be an integer between 0 and 125", args[0])
		}
		code = int(number)
	}

	os.Exit(code)
	return nil
}