Golang FlagSet.BoolVarP方法代碼示例

// InstallFlags adds flags for the common options on the FlagSet
func (commonOpts *CommonOptions) InstallFlags(flags *pflag.FlagSet) {
	if dockerCertPath == "" {
		dockerCertPath = cliconfig.Dir()
	}

	flags.BoolVarP(&commonOpts.Debug, "debug", "D", false, "Enable debug mode")
	flags.StringVarP(&commonOpts.LogLevel, "log-level", "l", "info", "Set the logging level (\"debug\", \"info\", \"warn\", \"error\", \"fatal\")")
	flags.BoolVar(&commonOpts.TLS, "tls", false, "Use TLS; implied by --tlsverify")
	flags.BoolVar(&commonOpts.TLSVerify, FlagTLSVerify, dockerTLSVerify, "Use TLS and verify the remote")

	// TODO use flag flags.String("identity"}, "i", "", "Path to libtrust key file")

	commonOpts.TLSOptions = &tlsconfig.Options{
		CAFile:   filepath.Join(dockerCertPath, DefaultCaFile),
		CertFile: filepath.Join(dockerCertPath, DefaultCertFile),
		KeyFile:  filepath.Join(dockerCertPath, DefaultKeyFile),
	}
	tlsOptions := commonOpts.TLSOptions
	flags.Var(opts.NewQuotedString(&tlsOptions.CAFile), "tlscacert", "Trust certs signed only by this CA")
	flags.Var(opts.NewQuotedString(&tlsOptions.CertFile), "tlscert", "Path to TLS certificate file")
	flags.Var(opts.NewQuotedString(&tlsOptions.KeyFile), "tlskey", "Path to TLS key file")

	hostOpt := opts.NewNamedListOptsRef("hosts", &commonOpts.Hosts, opts.ValidateHost)
	flags.VarP(hostOpt, "host", "H", "Daemon socket(s) to connect to")
}

// InstallCommonFlags adds flags to the pflag.FlagSet to configure the daemon
func (config *Config) InstallCommonFlags(flags *pflag.FlagSet) {
	var maxConcurrentDownloads, maxConcurrentUploads int

	config.ServiceOptions.InstallCliFlags(flags)

	flags.Var(opts.NewNamedListOptsRef("storage-opts", &config.GraphOptions, nil), "storage-opt", "Storage driver options")
	flags.Var(opts.NewNamedListOptsRef("authorization-plugins", &config.AuthorizationPlugins, nil), "authorization-plugin", "Authorization plugins to load")
	flags.Var(opts.NewNamedListOptsRef("exec-opts", &config.ExecOptions, nil), "exec-opt", "Runtime execution options")
	flags.StringVarP(&config.Pidfile, "pidfile", "p", defaultPidFile, "Path to use for daemon PID file")
	flags.StringVarP(&config.Root, "graph", "g", defaultGraph, "Root of the Docker runtime")
	flags.BoolVarP(&config.AutoRestart, "restart", "r", true, "--restart on the daemon has been deprecated in favor of --restart policies on docker run")
	flags.MarkDeprecated("restart", "Please use a restart policy on docker run")
	flags.StringVarP(&config.GraphDriver, "storage-driver", "s", "", "Storage driver to use")
	flags.IntVar(&config.Mtu, "mtu", 0, "Set the containers network MTU")
	flags.BoolVar(&config.RawLogs, "raw-logs", false, "Full timestamps without ANSI coloring")
	// FIXME: why the inconsistency between "hosts" and "sockets"?
	flags.Var(opts.NewListOptsRef(&config.DNS, opts.ValidateIPAddress), "dns", "DNS server to use")
	flags.Var(opts.NewNamedListOptsRef("dns-opts", &config.DNSOptions, nil), "dns-opt", "DNS options to use")
	flags.Var(opts.NewListOptsRef(&config.DNSSearch, opts.ValidateDNSSearch), "dns-search", "DNS search domains to use")
	flags.Var(opts.NewNamedListOptsRef("labels", &config.Labels, opts.ValidateLabel), "label", "Set key=value labels to the daemon")
	flags.StringVar(&config.LogConfig.Type, "log-driver", "json-file", "Default driver for container logs")
	flags.Var(opts.NewNamedMapOpts("log-opts", config.LogConfig.Config, nil), "log-opt", "Default log driver options for containers")
	flags.StringVar(&config.ClusterAdvertise, "cluster-advertise", "", "Address or interface name to advertise")
	flags.StringVar(&config.ClusterStore, "cluster-store", "", "URL of the distributed storage backend")
	flags.Var(opts.NewNamedMapOpts("cluster-store-opts", config.ClusterOpts, nil), "cluster-store-opt", "Set cluster store options")
	flags.StringVar(&config.CorsHeaders, "api-cors-header", "", "Set CORS headers in the remote API")
	flags.IntVar(&maxConcurrentDownloads, "max-concurrent-downloads", defaultMaxConcurrentDownloads, "Set the max concurrent downloads for each pull")
	flags.IntVar(&maxConcurrentUploads, "max-concurrent-uploads", defaultMaxConcurrentUploads, "Set the max concurrent uploads for each push")

	flags.StringVar(&config.SwarmDefaultAdvertiseAddr, "swarm-default-advertise-addr", "", "Set default address or interface for swarm advertised address")

	config.MaxConcurrentDownloads = &maxConcurrentDownloads
	config.MaxConcurrentUploads = &maxConcurrentUploads
}

func flags(set *pflag.FlagSet) {
	// Unused cli args
	set.StringVarP(&buildDir, "build", "b", "",
		"Path to target directory to place generated CSS, relative paths inside project directory are preserved")
	set.BoolVarP(&comments, "comment", "", false, "Turn on source comments")
	set.BoolVar(&debug, "debug", false, "Show detailed debug information")

	var nothingb bool
	set.BoolVar(&debug, "debug-info", false, "")
	set.MarkDeprecated("debug-info", "Use --debug instead")

	set.StringVarP(&dir, "dir", "d", "",
		"Path to locate images for spriting and image functions")
	set.StringVar(&dir, "images-dir", "", "")
	set.MarkDeprecated("images-dir", "Use -d instead")

	set.StringVar(&font, "font", ".", "Path to directory containing fonts")
	set.StringVar(&gen, "generated-images-path", "", "")
	set.MarkDeprecated("generated-images-path", "Use --gen instead")
	set.StringVar(&gen, "gen", ".", "Path to place generated images")

	set.StringVarP(&proj, "proj", "p", "",
		"Path to directory containing Sass stylesheets")
	set.BoolVar(&nothingb, "no-line-comments", false, "UNSUPPORTED: Disable line comments, use comments")
	set.MarkDeprecated("no-line-comments", "Use --comments instead")
	set.BoolVar(&relativeAssets, "relative-assets", false, "UNSUPPORTED: Make compass asset helpers generate relative urls to assets.")

	set.BoolVar(&sourceMap, "source-map", false, "Enable emitting of source maps, must specify build directory to use this")
	set.BoolVarP(&showVersion, "version", "v", false, "Show the app version")
	set.StringVar(&cachebust, "cachebust", "", "Defeat cache by appending timestamps to static assets ie. ts, sum, timestamp")
	set.StringVarP(&style, "style", "s", "nested",
		`nested style of output CSS
                        available options: nested, expanded, compact, compressed`)
	set.StringVar(&style, "output-style", "nested", "")
	set.MarkDeprecated("output-style", "Use --style instead")
	set.BoolVar(&timeB, "time", false, "Retrieve timing information")

	var nothing string
	set.StringVar(&nothing, "require", "", "")
	set.MarkDeprecated("require", "Compass backwards compat, Not supported")
	set.MarkDeprecated("require", "Not supported")
	set.StringVar(&nothing, "environment", "", "")
	set.MarkDeprecated("environment", "Not supported")
	set.StringSliceVar(&includes, "includes", nil, "Include Sass from additional directories")
	set.StringSliceVarP(&includes, "", "I", nil, "")
	set.MarkDeprecated("I", "Compass backwards compat, use --includes instead")
	set.StringVar(&buildDir, "css-dir", "",
		"Compass backwards compat. Reference locations relative to Sass project directory")
	set.MarkDeprecated("css-dir", "Use -b instead")
	set.StringVar(&jsDir, "javascripts-dir", "", "")
	set.MarkDeprecated("javascripts-dir", "Compass backwards compat, ignored")
	set.StringSliceVar(&includes, "sass-dir", nil,
		"Compass backwards compat, use --includes instead")
	set.StringVarP(&config, "config", "c", "",
		"Temporarily disabled: Location of the config file")

	set.StringVar(&cpuprofile, "cpuprofile", "", "Go runtime cpu profilling for debugging")
}

func boolFlag(f *pflag.FlagSet, valPtr *bool, flagInfo cliflags.FlagInfo, defaultVal bool) {
	if flagInfo.Shorthand == "" {
		f.BoolVar(valPtr, flagInfo.Name, defaultVal, makeUsageString(flagInfo))
	} else {
		f.BoolVarP(valPtr, flagInfo.Name, flagInfo.Shorthand, defaultVal, makeUsageString(flagInfo))
	}

	setFlagFromEnv(f, flagInfo)
}

func newDockerCommand(dockerCli *command.DockerCli) *cobra.Command {
	opts := cliflags.NewClientOptions()
	var flags *pflag.FlagSet

	cmd := &cobra.Command{
		Use:              "docker [OPTIONS] COMMAND [ARG...]",
		Short:            "A self-sufficient runtime for containers",
		SilenceUsage:     true,
		SilenceErrors:    true,
		TraverseChildren: true,
		Args:             noArgs,
		RunE: func(cmd *cobra.Command, args []string) error {
			if opts.Version {
				showVersion()
				return nil
			}
			cmd.SetOutput(dockerCli.Err())
			cmd.HelpFunc()(cmd, args)
			return nil
		},
		PersistentPreRunE: func(cmd *cobra.Command, args []string) error {
			// flags must be the top-level command flags, not cmd.Flags()
			opts.Common.SetDefaultOptions(flags)
			dockerPreRun(opts)
			return dockerCli.Initialize(opts)
		},
	}
	cli.SetupRootCommand(cmd)

	cmd.SetHelpFunc(func(ccmd *cobra.Command, args []string) {
		var err error
		if dockerCli.Client() == nil {
			// flags must be the top-level command flags, not cmd.Flags()
			opts.Common.SetDefaultOptions(flags)
			dockerPreRun(opts)
			err = dockerCli.Initialize(opts)
		}
		if err != nil || !dockerCli.HasExperimental() {
			hideExperimentalFeatures(ccmd)
		}
		if err := ccmd.Help(); err != nil {
			ccmd.Println(err)
		}
	})

	flags = cmd.Flags()
	flags.BoolVarP(&opts.Version, "version", "v", false, "Print version information and quit")
	flags.StringVar(&opts.ConfigDir, "config", cliconfig.ConfigDir(), "Location of client config files")
	opts.Common.InstallFlags(flags)

	cmd.SetOutput(dockerCli.Out())
	cmd.AddCommand(newDaemonCommand())
	commands.AddCommands(cmd, dockerCli)

	return cmd
}

func (c *CLI) addOutputFormatFlag(fs *pflag.FlagSet) {
	fs.StringVarP(
		&c.outputFormat, "format", "f", "tmpl",
		"The output format (tmpl, json, jsonp)")
	fs.StringVarP(
		&c.outputTemplate, "template", "", "",
		"The Go template to use when --format is set to 'tmpl'")
	fs.BoolVarP(
		&c.outputTemplateTabs, "templateTabs", "", true,
		"Set to true to use a Go tab writer with the output template")
}

// BindBoolFlag binds the flag based on the provided info.  If LongName == "", nothing is registered
func (f FlagInfo) BindBoolFlag(flags *pflag.FlagSet, target *bool) {
	// you can't register a flag without a long name
	if len(f.LongName) > 0 {
		// try to parse Default as a bool.  If it fails, assume false
		boolVal, err := strconv.ParseBool(f.Default)
		if err != nil {
			boolVal = false
		}

		flags.BoolVarP(target, f.LongName, f.ShortName, boolVal, f.Description)
	}
}

func newDockerCommand(dockerCli *client.DockerCli) *cobra.Command {
	opts := cliflags.NewClientOptions()
	var flags *pflag.FlagSet

	cmd := &cobra.Command{
		Use:              "docker [OPTIONS] COMMAND [arg...]",
		Short:            "A self-sufficient runtime for containers.",
		SilenceUsage:     true,
		SilenceErrors:    true,
		TraverseChildren: true,
		Args:             noArgs,
		RunE: func(cmd *cobra.Command, args []string) error {
			if opts.Version {
				showVersion()
				return nil
			}
			fmt.Fprintf(dockerCli.Err(), "\n"+cmd.UsageString())
			return nil
		},
		PersistentPreRunE: func(cmd *cobra.Command, args []string) error {
			// flags must be the top-level command flags, not cmd.Flags()
			opts.Common.SetDefaultOptions(flags)
			dockerPreRun(opts)
			return dockerCli.Initialize(opts)
		},
	}
	cli.SetupRootCommand(cmd)

	flags = cmd.Flags()
	flags.BoolVarP(&opts.Version, "version", "v", false, "Print version information and quit")
	flags.StringVar(&opts.ConfigDir, "config", cliconfig.ConfigDir(), "Location of client config files")
	opts.Common.InstallFlags(flags)

	cmd.SetOutput(dockerCli.Out())
	cmd.AddCommand(newDaemonCommand())
	command.AddCommands(cmd, dockerCli)

	return cmd
}

func initDeploymentFlags(fs *pflag.FlagSet, f *fg.Flags) {
	fs.StringVarP(&f.JobPath, "job", "j", defaultJobPath, "filename of the job description")
	fs.StringVarP(&f.ClusterPath, "cluster", "c", defaultClusterPath, "cluster description name or filename")
	fs.StringVarP(&f.TunnelOverride, "tunnel", "t", defaultTunnelOverride, "SSH endpoint to tunnel through with fleet (cluster override)")
	fs.StringSliceVarP(&f.Groups, "groups", "g", defaultGroups, "target task groups to deploy")
	fs.BoolVarP(&f.Force, "force", "f", defaultForce, "wheather to confirm destroy or not")
	fs.BoolVarP(&f.AutoContinue, "yes", "y", false, "auto continue on confirmation")
	fs.BoolVarP(&f.DryRun, "dry-run", "d", defaultDryRun, "wheather to schedule units or not")
	fs.UintVar(&f.ScalingGroup, "scaling-group", defaultScalingGroup, "scaling group to deploy")
	fs.BoolVarP(&f.Local, "local", "l", defaultLocal, "User local vagrant test cluster")
	fs.DurationVar(&f.StopDelay, "stop-delay", defaultStopDelay, "Time between stop and destroy")
	fs.DurationVar(&f.DestroyDelay, "destroy-delay", defaultDestroyDelay, "Time between destroy and re-create")
	fs.DurationVar(&f.SliceDelay, "slice-delay", defaultSliceDelay, "Time between update of scaling slices")
	fs.VarP(&f.Options, "option", "o", "Set an option (key=value)")

	f.VaultCACert = os.Getenv("VAULT_CACERT")
	f.VaultCAPath = os.Getenv("VAULT_CAPATH")
	fs.StringVar(&f.VaultAddr, "vault-addr", "", "URL of the vault (defaults to VAULT_ADDR environment variable)")
	fs.StringVar(&f.VaultCACert, "vault-cacert", f.VaultCACert, "Path to a PEM-encoded CA cert file to use to verify the Vault server SSL certificate")
	fs.StringVar(&f.VaultCAPath, "vault-capath", f.VaultCAPath, "Path to a directory of PEM-encoded CA cert files to verify the Vault server SSL certificate")
	fs.StringVarP(&f.GithubToken, "github-token", "G", "", "Personal github token for secret logins")
	fs.StringVar(&f.GithubTokenPath, "github-token-path", defaultGithubTokenPath, "Path of a file containing your github token")
}

func (c *CLI) addQuietFlag(fs *pflag.FlagSet) {
	fs.BoolVarP(&c.quiet, "quiet", "q", false, "Suppress table headers")
}

func (conf *HttpConfig) AddFlags(flags *flag.FlagSet) {
	conf.BasicConfig.AddFlags(flags)
	flags.StringVarP(&conf.Method, "method", "m", "GET", "HTTP method to use.")
	flags.BoolVarP(&conf.Keepalive, "keepalive", "k", true, "Enable HTTP Keepalive")
}

// AddFlags adds all command line flags that will be used by Parse to the FlagSet
func AddFlags(flags *pflag.FlagSet) *ContainerOptions {
	copts := &ContainerOptions{
		aliases:           opts.NewListOpts(nil),
		attach:            opts.NewListOpts(ValidateAttach),
		blkioWeightDevice: NewWeightdeviceOpt(ValidateWeightDevice),
		capAdd:            opts.NewListOpts(nil),
		capDrop:           opts.NewListOpts(nil),
		dns:               opts.NewListOpts(opts.ValidateIPAddress),
		dnsOptions:        opts.NewListOpts(nil),
		dnsSearch:         opts.NewListOpts(opts.ValidateDNSSearch),
		deviceReadBps:     NewThrottledeviceOpt(ValidateThrottleBpsDevice),
		deviceReadIOps:    NewThrottledeviceOpt(ValidateThrottleIOpsDevice),
		deviceWriteBps:    NewThrottledeviceOpt(ValidateThrottleBpsDevice),
		deviceWriteIOps:   NewThrottledeviceOpt(ValidateThrottleIOpsDevice),
		devices:           opts.NewListOpts(ValidateDevice),
		env:               opts.NewListOpts(ValidateEnv),
		envFile:           opts.NewListOpts(nil),
		expose:            opts.NewListOpts(nil),
		extraHosts:        opts.NewListOpts(ValidateExtraHost),
		groupAdd:          opts.NewListOpts(nil),
		labels:            opts.NewListOpts(ValidateEnv),
		labelsFile:        opts.NewListOpts(nil),
		linkLocalIPs:      opts.NewListOpts(nil),
		links:             opts.NewListOpts(ValidateLink),
		loggingOpts:       opts.NewListOpts(nil),
		publish:           opts.NewListOpts(nil),
		securityOpt:       opts.NewListOpts(nil),
		storageOpt:        opts.NewListOpts(nil),
		sysctls:           opts.NewMapOpts(nil, opts.ValidateSysctl),
		tmpfs:             opts.NewListOpts(nil),
		ulimits:           NewUlimitOpt(nil),
		volumes:           opts.NewListOpts(nil),
		volumesFrom:       opts.NewListOpts(nil),
	}

	// General purpose flags
	flags.VarP(&copts.attach, "attach", "a", "Attach to STDIN, STDOUT or STDERR")
	flags.Var(&copts.devices, "device", "Add a host device to the container")
	flags.VarP(&copts.env, "env", "e", "Set environment variables")
	flags.Var(&copts.envFile, "env-file", "Read in a file of environment variables")
	flags.StringVar(&copts.entrypoint, "entrypoint", "", "Overwrite the default ENTRYPOINT of the image")
	flags.Var(&copts.groupAdd, "group-add", "Add additional groups to join")
	flags.StringVarP(&copts.hostname, "hostname", "h", "", "Container host name")
	flags.BoolVarP(&copts.stdin, "interactive", "i", false, "Keep STDIN open even if not attached")
	flags.VarP(&copts.labels, "label", "l", "Set meta data on a container")
	flags.Var(&copts.labelsFile, "label-file", "Read in a line delimited file of labels")
	flags.BoolVar(&copts.readonlyRootfs, "read-only", false, "Mount the container's root filesystem as read only")
	flags.StringVar(&copts.restartPolicy, "restart", "no", "Restart policy to apply when a container exits")
	flags.StringVar(&copts.stopSignal, "stop-signal", signal.DefaultStopSignal, fmt.Sprintf("Signal to stop a container, %v by default", signal.DefaultStopSignal))
	flags.Var(copts.sysctls, "sysctl", "Sysctl options")
	flags.BoolVarP(&copts.tty, "tty", "t", false, "Allocate a pseudo-TTY")
	flags.Var(copts.ulimits, "ulimit", "Ulimit options")
	flags.StringVarP(&copts.user, "user", "u", "", "Username or UID (format: <name|uid>[:<group|gid>])")
	flags.StringVarP(&copts.workingDir, "workdir", "w", "", "Working directory inside the container")
	flags.BoolVar(&copts.autoRemove, "rm", false, "Automatically remove the container when it exits")

	// Security
	flags.Var(&copts.capAdd, "cap-add", "Add Linux capabilities")
	flags.Var(&copts.capDrop, "cap-drop", "Drop Linux capabilities")
	flags.BoolVar(&copts.privileged, "privileged", false, "Give extended privileges to this container")
	flags.Var(&copts.securityOpt, "security-opt", "Security Options")
	flags.StringVar(&copts.usernsMode, "userns", "", "User namespace to use")
	flags.StringVar(&copts.credentialSpec, "credentialspec", "", "Credential spec for managed service account (Windows only)")

	// Network and port publishing flag
	flags.Var(&copts.extraHosts, "add-host", "Add a custom host-to-IP mapping (host:ip)")
	flags.Var(&copts.dns, "dns", "Set custom DNS servers")
	flags.Var(&copts.dnsOptions, "dns-opt", "Set DNS options")
	flags.Var(&copts.dnsSearch, "dns-search", "Set custom DNS search domains")
	flags.Var(&copts.expose, "expose", "Expose a port or a range of ports")
	flags.StringVar(&copts.ipv4Address, "ip", "", "Container IPv4 address (e.g. 172.30.100.104)")
	flags.StringVar(&copts.ipv6Address, "ip6", "", "Container IPv6 address (e.g. 2001:db8::33)")
	flags.Var(&copts.links, "link", "Add link to another container")
	flags.Var(&copts.linkLocalIPs, "link-local-ip", "Container IPv4/IPv6 link-local addresses")
	flags.StringVar(&copts.macAddress, "mac-address", "", "Container MAC address (e.g. 92:d0:c6:0a:29:33)")
	flags.VarP(&copts.publish, "publish", "p", "Publish a container's port(s) to the host")
	flags.BoolVarP(&copts.publishAll, "publish-all", "P", false, "Publish all exposed ports to random ports")
	// We allow for both "--net" and "--network", although the latter is the recommended way.
	flags.StringVar(&copts.netMode, "net", "default", "Connect a container to a network")
	flags.StringVar(&copts.netMode, "network", "default", "Connect a container to a network")
	flags.MarkHidden("net")
	// We allow for both "--net-alias" and "--network-alias", although the latter is the recommended way.
	flags.Var(&copts.aliases, "net-alias", "Add network-scoped alias for the container")
	flags.Var(&copts.aliases, "network-alias", "Add network-scoped alias for the container")
	flags.MarkHidden("net-alias")

	// Logging and storage
	flags.StringVar(&copts.loggingDriver, "log-driver", "", "Logging driver for the container")
	flags.StringVar(&copts.volumeDriver, "volume-driver", "", "Optional volume driver for the container")
	flags.Var(&copts.loggingOpts, "log-opt", "Log driver options")
	flags.Var(&copts.storageOpt, "storage-opt", "Storage driver options for the container")
	flags.Var(&copts.tmpfs, "tmpfs", "Mount a tmpfs directory")
	flags.Var(&copts.volumesFrom, "volumes-from", "Mount volumes from the specified container(s)")
	flags.VarP(&copts.volumes, "volume", "v", "Bind mount a volume")

	// Health-checking
	flags.StringVar(&copts.healthCmd, "health-cmd", "", "Command to run to check health")
	flags.DurationVar(&copts.healthInterval, "health-interval", 0, "Time between running the check")
	flags.IntVar(&copts.healthRetries, "health-retries", 0, "Consecutive failures needed to report unhealthy")
//.........這裏部分代碼省略.........

func (c *Config) boolVarP(fset *flag.FlagSet, name string, aof *bool) *flag.Flag {
	i := keys[name]
	fset.BoolVarP(aof, name, i.Shorthand, c.Viper.GetBool(name), i.Description)
	return fset.Lookup(name)
}

func (c *CLI) addIdempotentFlag(fs *pflag.FlagSet) {
	fs.BoolVarP(&c.idempotent, "idempotent", "i", false,
		"Make this command idempotent.")
}

func (c *CLI) addDryRunFlag(fs *pflag.FlagSet) {
	fs.BoolVarP(&c.dryRun, "dryRun", "n", false,
		"Show what action(s) will occur, but do not execute them")
}