Golang flag.Bool函数代码示例

func main() {
	servers := flag.String("servers", "", "zk servers")
	chroot := flag.String("chroot", "", "zk chroot")
	recursive := flag.Bool("r", false, "recursive ?")
	help := flag.Bool("h", false, "help info")
	flag.Parse()
	if *help {
		printUsage()
		os.Exit(0)
	}
	if len(*servers) == 0 {
		fmt.Println("ERROR: --servers is required\n")
		printUsage()
		os.Exit(255)
	}
	if flag.NArg() < 2 {
		fmt.Println("ERROR: cmd path is requred\n")
		printUsage()
		os.Exit(255)
	}
	opt := cmd.NewCmdOption()
	opt.Servers = strings.Split(*servers, ",")
	opt.Chroot = *chroot
	opt.Recursive = *recursive
	err := cmd.Call(opt, flag.Args())
	if err != nil {
		fmt.Println("ERROR: fail to zk:", err)
		os.Exit(255)
	}
	os.Exit(0)
}

func main() {
	algo := flag.Int("a", 256, "SHA hash algorithm (one of 256, 384, or 512)")
	check := flag.Bool("c", false, "read SHA sums from the files and check them")
	hidden := flag.Bool("d", false, "sum hidden (dot) files")
	flag.Parse()

	progName = filepath.Base(os.Args[0])
	sumHidden = *hidden

	switch *algo {
	case 1:
		sumFunc = sum1
	case 256:
		sumFunc = sum256
	case 384:
		sumFunc = sum384
	case 512:
		sumFunc = sum512
	default:
		fmt.Println("Unrecognised algorithm.")
		os.Exit(1)
	}

	if *check {
		checkFile(flag.Args())
	} else {
		for _, root := range flag.Args() {
			err := filepath.Walk(root, walker)
			if err != nil {
				fmt.Printf("%v\n", err)
			}
		}
	}
}

func main() {
	swaggerDir := flag.String("path", "", "Path to model files")
	buildStructs := flag.Bool("structs", true, "Whether or not to build structs")
	buildAPI := flag.Bool("api", true, "Whether or not to build the API")
	flag.Parse()
	files, err := ioutil.ReadDir(*swaggerDir)
	if err != nil {
		log.Fatal(err)
	}
	for _, swaggerFile := range files {
		if !swaggerFile.IsDir() && strings.HasSuffix(swaggerFile.Name(), ".json") {
			apiBase := strings.TrimSuffix(swaggerFile.Name(), ".json")
			swaggerPath := strings.Join([]string{*swaggerDir, swaggerFile.Name()}, "/")
			swaggerString, err := ioutil.ReadFile(swaggerPath)
			if err != nil {
				continue
			}
			var s Swagger
			json.Unmarshal(swaggerString, &s)
			ParseModels(s.Models.(map[string]interface{}))
			BuildAPIs(apiBase, s)
		}
	}
	fmt.Println("package ari")
	if *buildAPI {
		fmt.Println(apiPreamble)
	}
	if *buildStructs {
		OutputStructs()
	}
	if *buildAPI {
		fmt.Print(clientAPIBuf.String())
	}
}

func main() {
	cfg := flag.String("c", "cfg.json", "configuration file")
	version := flag.Bool("v", false, "show version")
	versionGit := flag.Bool("vg", false, "show version")
	flag.Parse()

	if *version {
		fmt.Println(g.VERSION)
		os.Exit(0)
	}
	if *versionGit {
		fmt.Println(g.VERSION, g.COMMIT)
		os.Exit(0)
	}

	// global config
	g.ParseConfig(*cfg)
	// proc
	proc.Start()

	// monitor
	monitor.Start()

	// http
	http.Start()

	select {}
}

func main() {
	debug := flag.Bool("debug", false, "debug on")
	threaded := flag.Bool("threaded", true, "debug on")
	delcache_ttl := flag.Float64("deletion_cache_ttl", 5.0, "Deletion cache TTL in seconds.")
	branchcache_ttl := flag.Float64("branchcache_ttl", 5.0, "Branch cache TTL in seconds.")
	deldirname := flag.String(
		"deletion_dirname", "GOUNIONFS_DELETIONS", "Directory name to use for deletions.")
	flag.Parse()

	if len(flag.Args()) < 2 {
		fmt.Println("Usage:\n  main MOUNTPOINT RW-DIRECTORY RO-DIRECTORY ...")
		os.Exit(2)
	}

	ufsOptions := unionfs.UnionFsOptions{
		DeletionCacheTTLSecs: *delcache_ttl,
		BranchCacheTTLSecs:   *branchcache_ttl,
		DeletionDirName:      *deldirname,
	}

	ufs, err := unionfs.NewUnionFsFromRoots(flag.Args()[1:], &ufsOptions)
	if err != nil {
		log.Fatal("Cannot create UnionFs", err)
		os.Exit(1)
	}
	mountState, _, err := fuse.MountFileSystem(flag.Arg(0), ufs, nil)
	if err != nil {
		log.Fatal("Mount fail:", err)
	}

	mountState.Debug = *debug
	mountState.Loop(*threaded)
}

func main() {
	userFlag := flag.Bool("add_user", false, "Run CLI for adding user to database")
	testFlag := flag.Bool("test", false, "Run test script to simulate client")
	flag.Parse()

	// Connect to database
	data := os.Getenv("OPENSHIFT_DATA_DIR")
	db := models.InitDb(data+"ota.sql", data+"builds")
	defer db.Db.Close()

	go models.RefreshBuilds()

	if *testFlag {
		tests.TestServer("http://localhost:8080")
	} else {
		if *userFlag {
			// Start CLI to create new user account
			addUser()
		} else {
			// Start server
			templates := "./views"
			controllers.InitMiddleware(templates)
			server(templates)
		}
	}
}

func TestParse_Global(t *testing.T) {
	resetForTesting("")

	os.Setenv(envTestPrefix+"D", "EnvD")
	os.Setenv(envTestPrefix+"E", "true")
	os.Setenv(envTestPrefix+"F", "5.5")

	flagA := flag.Bool("a", false, "")
	flagB := flag.Float64("b", 0.0, "")
	flagC := flag.String("c", "", "")

	flagD := flag.String("d", "", "")
	flagE := flag.Bool("e", false, "")
	flagF := flag.Float64("f", 0.0, "")

	parse(t, "./testdata/global.ini", envTestPrefix)
	if !*flagA {
		t.Errorf("flagA found %v, expected true", *flagA)
	}
	if *flagB != 5.6 {
		t.Errorf("flagB found %v, expected 5.6", *flagB)
	}
	if *flagC != "Hello world" {
		t.Errorf("flagC found %v, expected 'Hello world'", *flagC)
	}
	if *flagD != "EnvD" {
		t.Errorf("flagD found %v, expected 'EnvD'", *flagD)
	}
	if !*flagE {
		t.Errorf("flagE found %v, expected true", *flagE)
	}
	if *flagF != 5.5 {
		t.Errorf("flagF found %v, expected 5.5", *flagF)
	}
}

func main() {
	// Parse flags.
	var port int
	var vlc *bool
	var seed *bool

	vlc = flag.Bool("vlc", false, "Open vlc to play the file")
	flag.IntVar(&port, "port", 8080, "Port to stream the video on")
	seed = flag.Bool("seed", false, "Seed after finished downloading")
	flag.Parse()
	if len(flag.Args()) == 0 {
		flag.Usage()
		os.Exit(exitNoTorrentProvided)
	}

	// Start up the torrent client.
	client, err := NewClient(flag.Arg(0), port, *seed)
	if err != nil {
		log.Fatalf(err.Error())
		os.Exit(exitErrorInClient)
	}

	// Http handler.
	go func() {
		http.HandleFunc("/", client.GetFile)
		log.Fatal(http.ListenAndServe(":"+strconv.Itoa(port), nil))
	}()

	// Open vlc to play.
	if *vlc {
		go func() {
			for !client.ReadyForPlayback() {
				time.Sleep(time.Second)
			}
			playInVlc(port)
		}()
	}

	// Handle exit signals.
	interruptChannel := make(chan os.Signal, 1)
	signal.Notify(interruptChannel,
		os.Interrupt,
		syscall.SIGHUP,
		syscall.SIGINT,
		syscall.SIGTERM,
		syscall.SIGQUIT)
	go func(interruptChannel chan os.Signal) {
		for range interruptChannel {
			log.Println("Exiting...")
			client.Close()
			os.Exit(0)
		}
	}(interruptChannel)

	// Cli render loop.
	for {
		client.Render()
		time.Sleep(time.Second)
	}
}

func main() {
	verbose := flag.Bool("verbose", false, "Verbose mode")
	help := flag.Bool("help", false, "Show usage")
	flag.Usage = usage
	flag.Parse()

	initialPath := flag.Arg(0)
	if initialPath == "" {
		initialPath = "./"
	}

	if _, err := os.Stat(initialPath); err != nil {
		application.Fatal(err.Error())
	}

	application.Verbose = *verbose
	if *help {
		usage()
		return
	}
	watcherLoop := newWatcherLoop(initialPath)
	application.Register("Watcher Loop", watcherLoop)
	application.InstallSignalHandler(&sigterm{paths: watcherLoop.paths})
	exitCh := make(chan bool)
	application.Run()
	<-exitCh
}

// Do the plugin
func Do() {
	optHost := flag.String("host", "localhost", "Hostname")
	optPort := flag.String("port", "3306", "Port")
	optSocket := flag.String("socket", "", "Port")
	optUser := flag.String("username", "root", "Username")
	optPass := flag.String("password", "", "Password")
	optTempfile := flag.String("tempfile", "", "Temp file name")
	optInnoDB := flag.Bool("disable_innodb", false, "Disable InnoDB metrics")
	optMetricKeyPrefix := flag.String("metric-key-prefix", "mysql", "metric key prefix")
	optEnableExtended := flag.Bool("enable_extended", false, "Enable Extended metrics")
	flag.Parse()

	var mysql MySQLPlugin

	if *optSocket != "" {
		mysql.Target = *optSocket
		mysql.isUnixSocket = true
	} else {
		mysql.Target = fmt.Sprintf("%s:%s", *optHost, *optPort)
	}
	mysql.Username = *optUser
	mysql.Password = *optPass
	mysql.DisableInnoDB = *optInnoDB
	mysql.prefix = *optMetricKeyPrefix
	mysql.EnableExtended = *optEnableExtended
	helper := mp.NewMackerelPlugin(mysql)
	helper.Tempfile = *optTempfile
	helper.Run()
}

func init() {
	// All the defaults mentioned here refer to etcd_load.cfg values.
	fhelp = flag.Bool("help", false, "shows how to use flags")
	fhost = flag.String("h", "null", "etcd instance address."+
		"Default=127.0.0.1 from config file")
	fport = flag.String("p", "null",
		"port on which etcd is running. Defalt=4001")
	foperation = flag.String("o", "null",
		"operation - create/delete/get/update. Default:create")
	fkeycount = flag.Int("k", -1, "number of keys involved in operation,"+
		"useful for create. Default:100")
	foperation_count = flag.Int("oc", -1, "number of operations to be performed,"+
		" Default:100")
	flog_file = flag.String("log", "null", "logfile name, default : log")
	fremote_flag = flag.Bool("remote", false, " Must be set true if etcd "+
		"instance is remote. Default=false")
	fmem_flag = flag.Bool("mem", false, "When true, memory info is shown."+
		" Default=false")
	fsecure = flag.Bool("secure", false, "When true, new tls client created "+
		"using certificate,key files. Default = false")
	fcfg_file = flag.String("c", "null", "Input the cfg file. Required")
	fcapath = flag.String("capath", "null", "Certificate Path"+
		". Default = /etc/openshift/master")
	fcacert = flag.String("ca", "ca.crt", "The ca filename. Default = ca.crt")
	fclient_cert = flag.String("cert", "null", "The client"+
		"Certificate. Default = master.etcd-client.crt")
	fclient_key = flag.String("cakey", "null", "The client"+
		"Key file. Default = master.etcd-client.key")
}

func main() {
	mongodAddr := flag.String("addr", "127.0.0.1:27017", "-addr=127.0.0.1:27017")
	switchFind := flag.Bool("find", false, "-find")
	switchMapReduce := flag.Bool("mapreduce", false, "-mapreduce")
	switchInsert := flag.Bool("insert", false, "-insert")
	switchInit := flag.Bool("init", false, "-init")
	switchTree := flag.Bool("tree", false, "-tree")
	flag.Parse()

	session, err := mgo.Dial(*mongodAddr)
	if err != nil {
		panic(err)
	}
	defer session.Close()

	dbName := "study"
	collectionName := "test1"
	db := session.DB(dbName)
	collection := db.C(collectionName)

	if *switchFind {
		find(collection)
	} else if *switchMapReduce {
		mapreduce(collection)
	} else if *switchInsert {
		insert(collection)
	} else if *switchInit {
		initCollection(collection, 10000)
	} else if *switchTree {
		tree(db)
	} else {
		flag.PrintDefaults()
	}
}

func main() {
	var flagRunLanguageTests = flag.Bool("test", false, "Run the language sanity tests")
	var testLanguage = flag.String("lang", "", "Run the tests for one specific language")
	var disableApparmor = flag.Bool("disable-apparmor", false, "Disable all apparmor usage. NOT FOR PROD obv.")
	flag.Parse()

	if *disableApparmor {
		fmt.Printf("Running without apparmor support!\n")
	}

	engine, err := engine.New("config", *disableApparmor)
	if err != nil {
		panic(err)
	}

	// go func() {
	// 	for {
	// 		time.Sleep(15 * time.Second)
	// 		fmt.Printf("\n\n========\n")
	// 		pprof.Lookup("goroutine").WriteTo(os.Stderr, 1)
	// 	}
	// }()

	if *flagRunLanguageTests {
		runLanguageTests(engine, *testLanguage)
	} else {
		startServer(engine, ":8081")
	}
}

/*
 * Run the program
 *
 * Usage:
 *		./ls [args] directory_name
 *
 * 		possible args:
 *		-R: go through directories recursively
 *		-n: print with information
 *		-t: sort files by modification time
 *
 *		if no arguments are getting, print out alphabetically with 1 file
 *		per line
 */
func main() {
	var R *bool
	var n *bool
	var t *bool

	R = flag.Bool("R", false, "go through directories recursively")
	n = flag.Bool("n", false, "print with information")
	t = flag.Bool("t", false, "sort files by modification time")
	flag.Parse()

	args := flag.Args()
	if len(args) == 0 {
		args = []string{"./"}
	}
	defer func() {
		if r := recover(); r != nil {
			fmt.Fprintln(os.Stderr, "Invalid Arguments")
		}
	}()

	temp := template.Must(template.New("ls").Parse("{{.Mode}} {{printf `%3d` .Nlink}} {{.Uid}}  {{.Gid}}  {{printf `%7d` .Size}} {{.Mtime}}  {{.Name}}\n"))

	for _, arg := range args {
		if data, error := ls.Ls(arg, *R, *t); error == nil {
			path := data[0][0].Name
			if strings.HasSuffix(path, "/") {
				path = path[0 : len(path)-1]
			}
			printFiles(flag.NArg(), data, path, n, temp)
		} else {
			fmt.Fprintln(os.Stderr, "File or directory not found")
		}
	}
}

func main() {
	var lineNumFlag = flag.Bool("n", false, "output line numbers")
	var tabFlag = flag.Bool("t", false, "display tabs")
	flag.Parse()

	args := flag.Args()
	flags := 0
	if *lineNumFlag {
		flags += 2
	}
	if *tabFlag {
		flags += 1
	}
	for _, arg := range args {
		file, err := os.Open(arg)
		if err != nil {
			return
		}

		fileStat, err := file.Stat()
		if err != nil {
			return
		}
		size := int(fileStat.Sys().(*syscall.Stat_t).Blksize)
		outBuf := NewTempWriter(int(fileStat.Sys().(*syscall.Stat_t).Blksize))
		inBuf := make([]byte, size)

		Cat(file, inBuf, outBuf, flags)
		file.Close()

		outBuf.Flush()
	}
	return
}