Golang flag.Arg函數代碼示例

func main() {
	flag.Parse()

	if email == "" || password == "" {
		fmt.Println("Invalid E-Mail or Password\n")
		flag.Usage()
		os.Exit(-1)
	}

	if flag.NArg()%2 == 0 {
		flag.Usage()
		os.Exit(-1)
	}
	imsi := flag.Arg(0)
	tags := make([]map[string]string, (flag.NArg()-1)/2)
	idx := 0
	for i := 1; i < flag.NArg(); i += 2 {
		k := flag.Arg(i)
		v := flag.Arg(i + 1)
		tag := map[string]string{"tagName": k, "tagValue": v}
		tags[idx] = tag
		idx++
	}
	fmt.Println(tags)

	c, err := goracom.NewClient(email, password)
	errToExit(err)
	s := c.NewSubscriber()
	sub, err := s.Tags(imsi, tags)
	errToExit(err)
	printSubscriber(*sub)
}

func main() {
	// Scans the arg list and sets up flags
	debug := flag.Bool("debug", false, "print debugging messages.")
	latencies := flag.Bool("latencies", false, "record operation latencies.")

	flag.Parse()
	if flag.NArg() < 2 {
		fmt.Fprintf(os.Stderr, "usage: %s MOUNTPOINT ZIP-FILE\n", os.Args[0])
		os.Exit(2)
	}

	var fs fuse.NodeFileSystem
	fs, err := zipfs.NewArchiveFileSystem(flag.Arg(1))
	if err != nil {
		fmt.Fprintf(os.Stderr, "NewArchiveFileSystem failed: %v\n", err)
		os.Exit(1)
	}

	state, _, err := fuse.MountNodeFileSystem(flag.Arg(0), fs, nil)
	if err != nil {
		fmt.Printf("Mount fail: %v\n", err)
		os.Exit(1)
	}

	state.SetRecordStatistics(*latencies)
	state.Debug = *debug
	state.Loop()
}

func main() {
	var acctAlias = flag.String("a", "", "Account alias to use")

	flag.Usage = func() {
		fmt.Fprintf(os.Stderr, "usage: %s [options]  <HW Group UUID>\n", path.Base(os.Args[0]))
		flag.PrintDefaults()
	}

	flag.Parse()
	if flag.NArg() != 1 {
		flag.Usage()
		os.Exit(1)
	}

	client, err := clcv1.NewClient(log.New(os.Stdout, "", log.LstdFlags|log.Ltime))
	if err != nil {
		exit.Fatal(err.Error())
	} else if err := client.Logon("", ""); err != nil {
		exit.Fatalf("Login failed: %s", err)
	}

	reqId, err := client.ArchiveHardwareGroup(flag.Arg(0), *acctAlias)
	if err != nil {
		exit.Fatalf("Failed to archive Hardware Group %s: %s", flag.Arg(0), err)
	}

	fmt.Println("Request ID for group archival:", reqId)
}

func main() {
	flag.Parse()

	if email == "" || password == "" {
		fmt.Println("Invalid E-Mail or Password\n")
		flag.Usage()
		os.Exit(-1)
	}

	if flag.NArg() != 2 {
		flag.Usage()
		os.Exit(-1)
	}
	imsi := flag.Arg(0)
	speed := flag.Arg(1)

	c, err := goracom.NewClient(email, password)
	errToExit(err)
	s := c.NewSubscriber()

	if sub, err := s.UpdateSpeedClass(imsi, speed); err == nil {
		printSubscriber(*sub)
	} else {
		errToExit(err)
	}
}

func main() {
	flag.Parse()
	root := flag.Arg(0)
	bucket = flag.Arg(1)
	conf = flag.Arg(2)
	filepath.Walk(root, walkpath)
}

func main() {
	var versionFlg bool
	flag.BoolVar(&versionFlg, "v", false, "show version")
	flag.Parse()

	if versionFlg {
		fmt.Println("openstack-ssh version:", Version)
		return
	}
	if flag.Arg(0) == "" {
		panic("please input username")
	}
	config, err := app.LoadConfig()

	if err != nil {
		app.ERR(err)
		panic(err)
	}

	key, err := app.FetchPublicKey(flag.Arg(0), config)

	if err != nil {
		app.ERR(err)
		panic(err)
	}

	fmt.Println(key.PublicKey)
}

func Project() (err error) {
	path, err := os.Getwd()
	if err != nil {
		err = &FileError{
			errors.Wrapf(err, "cmd: Failed to get working directory"),
		}
		return
	}

	proj := &project.Project{
		Root: path,
	}
	err = proj.Init()
	if err != nil {
		return
	}

	cmd := flag.Arg(1)
	switch cmd {
	case "init":
		err = proj.InitProject()
	case "build":
		err = proj.Build(flag.Arg(2))
	case "repo":
		err = proj.Repo(flag.Arg(2))
	default:
		err = &UnknownCommand{
			errors.Newf("cmd: Unknown cmd '%s'", cmd),
		}
	}

	return
}

func main() {
	flag.Parse()

	if email == "" || password == "" {
		fmt.Println("Invalid E-Mail or Password\n")
		flag.Usage()
		os.Exit(-1)
	}

	if flag.NArg() != 2 {
		flag.Usage()
		os.Exit(-1)
	}
	imsi := flag.Arg(0)
	tm, err := strconv.ParseInt(flag.Arg(1), 10, 64)
	if err != nil {
		fmt.Printf("%s\n\n", err.Error())
		flag.Usage()
		os.Exit(-1)
	}

	c, err := goracom.NewClient(email, password)
	errToExit(err)
	s := c.NewSubscriber()
	if tm == 0 {
		sub, err := s.UnsetExpiryTime(imsi)
		errToExit(err)
		printSubscriber(*sub)
	} else {
		sub, err := s.SetExpiryTime(imsi, tm)
		errToExit(err)
		printSubscriber(*sub)
	}
}

func main() {
	var pubFile, privFile string
	var help, listen, stayOpen bool
	flag.BoolVar(&help, "h", false, "display a short usage message")
	flag.BoolVar(&stayOpen, "k", false, "keep listening after client disconnects")
	flag.BoolVar(&listen, "l", false, "listen for incoming connections")
	flag.StringVar(&privFile, "s", "", "path to signature key")
	flag.StringVar(&pubFile, "v", "", "path to verification key")
	flag.Parse()

	if help {
		usage()
		os.Exit(1)
	}

	loadID(privFile, pubFile)
	defer func() {
		if idPriv != nil {
			zero(idPriv[:], 0)
		}
	}()

	if listen {
		if flag.NArg() != 1 {
			fmt.Println("A port is required (and should be the only argument) when listening.")
		}
		listener(stayOpen, flag.Arg(0))
		return
	}

	if flag.NArg() != 2 {
		fmt.Println("An address and port are required (and should be the only arguments).")
	}
	sender(flag.Arg(0) + ":" + flag.Arg(1))
}

func main() {
	start := time.Now()

	flag.Parse()

	if *version {
		fmt.Printf("inspectFile %d.%d.%d\n", Version[0], Version[1], Version[2])
		return
	}
	if *flserve != "" {
		fmt.Printf("Startinf server at %s. Use CTRL+C to quit.\n", *flserve)
		listen(*flserve)
		return
	}
	if *fltools != "" {
		initTools(*fltools)
	}
	if *dir {
		if flag.NArg() != 1 {
			fmt.Println("You must pass a directory name!!!")
			return
		}
		inspectdir(flag.Arg(0))
	} else if flag.NArg() != 1 {
		fmt.Println("You must pass a file name in parameter!!!")
		return
	} else {
		output = inspectfile(flag.Arg(0), nil)
	}
	//output = inspectsfile("/media/sf_Temp/Benchmark.pptx", output)
	fmt.Printf("Output: %s \n", output)
	fmt.Printf("ToolsVersion: %s\n", ExportToolsVersion())

	fmt.Printf("Took %v to run.\n", time.Since(start))
}

func main() {
	var acctAlias = flag.String("a", "", "Account alias to use")
	var snapName = flag.String("s", "", "The name of the Snapshot to delete")

	flag.Usage = func() {
		fmt.Fprintf(os.Stderr, "usage: %s [options]  <server-name>\n", path.Base(os.Args[0]))
		flag.PrintDefaults()
	}

	flag.Parse()
	if flag.NArg() != 1 || *snapName == "" {
		flag.Usage()
		os.Exit(1)
	}

	client, err := clcv1.NewClient(log.New(os.Stdout, "", log.LstdFlags|log.Ltime))
	if err != nil {
		exit.Fatal(err.Error())
	} else if err := client.Logon("", ""); err != nil {
		exit.Fatalf("Login failed: %s", err)
	}

	err = client.DeleteSnapshot(*snapName, flag.Arg(0), *acctAlias)
	if err != nil {
		exit.Fatalf("Failed to delete snapshot on %s: %s", flag.Arg(0), err)
	}

	fmt.Printf("Successfully deleted snapshot %q from %s.\n", *snapName, flag.Arg(0))
}

func main() {
	log.Trace("-m-", "Opening input file")

	// Parse debug flags
	flag.BoolVar(&log.LOG_TOKENS, "log-tokens", false, "Enable list of parsed tokens")
	flag.BoolVar(&log.LOG_TRACE, "log-trace", false, "Enable trace logging of debug output")
	flag.BoolVar(&log.EXTENSIONS, "extensions", false, "Enables parser extensions for additional features. See README for a list of these.")
	flag.Parse()

	// Init builtin functions
	ast.InitBuiltins()

	// Parse command line arguments
	var file *os.File
	var err error
	if flag.NArg() == 0 {
		log.Trace("-m-", "Reading from stdin")
		file = os.Stdin
	} else if flag.NArg() == 1 {
		log.Trace("-m-", "Reading from file "+flag.Arg(0))
		file, err = os.Open(flag.Arg(0))
	} else {
		panic("Must provide filename to read from or no filename at all")
	}

	if err != nil {
		panic("File name provided does not exist")
	}

	log.Trace("-m-", "Beginning lex")
	yyParse(NewLexer(file))

}

func main() {
	flag.Parse()

	if flag.NArg() != 2 {
		topic = "many"
		payload = proto.BytesPayload([]byte("hello"))
	} else {
		topic = flag.Arg(0)
		payload = proto.BytesPayload([]byte(flag.Arg(1)))
	}

	if *conns == 0 {
		*conns = -1
	}

	i := 0
	for {
		go client(i)
		i++

		*conns--
		if *conns == 0 {
			break
		}
		time.Sleep(time.Duration(*wait) * time.Millisecond)
	}

	// sleep forever
	<-make(chan struct{})
}

// getFileHandles uses our arguments to set up our input and output files
func getFileHandles() (in, out *os.File, err error) {
	// Input file should be our only command line argument
	if len(flag.Args()) != 1 {
		err = fmt.Errorf("Must have exactly one argument (input filename).  Received: %v",
			flag.Args())
		return
	}
	in, err = os.Open(flag.Arg(0))
	if err != nil {
		err = fmt.Errorf("Error: Unable to open input file %v: %v", flag.Arg(0),
			err)
		return
	}

	// Output file
	out = os.Stdout
	if *output != "-" {
		out, err = os.Create(*output)
		if err != nil {
			err = fmt.Errorf("Error: Unable to open output file %v: %v", *output,
				err)
			return
		}
	}

	return
}

func main() {
	search := flag.String("s", "", "search issues")
	create := flag.Bool("C", false, "create issue")
	comment := flag.Bool("c", false, "show comments")
	flag.Usage = func() {
		fmt.Fprint(os.Stderr, "Usage: goissue [-c ID | -s WORD]\n")
		flag.PrintDefaults()
	}
	flag.Parse()
	if flag.NArg() > 1 {
		flag.Usage()
		os.Exit(1)
	}

	config := getConfig()
	auth := authLogin(config)

	if *create {
		createIssue(auth)
	} else if len(*search) > 0 {
		searchIssues(auth, *search)
	} else if flag.NArg() == 0 {
		showIssues(auth)
	} else {
		for i := 0; i < flag.NArg(); i++ {
			showIssue(auth, flag.Arg(i))
			if *comment {
				showComments(auth, flag.Arg(i))
			}
		}
	}
}