Golang i18n.G函数代码示例

func main() {
	if err := run(); err != nil {
		// The action we take depends on the error we get.
		msg := fmt.Sprintf(i18n.G("error: %v"), err)
		switch t := err.(type) {
		case *url.Error:
			switch u := t.Err.(type) {
			case *net.OpError:
				if u.Op == "dial" && u.Net == "unix" {
					switch errno := u.Err.(type) {
					case syscall.Errno:
						switch errno {
						case syscall.ENOENT:
							msg = i18n.G("LXD socket not found; is LXD running?")
						case syscall.ECONNREFUSED:
							msg = i18n.G("Connection refused; is LXD running?")
						case syscall.EACCES:
							msg = i18n.G("Permisson denied, are you in the lxd group?")
						default:
							msg = fmt.Sprintf("%d %s", uintptr(errno), errno.Error())
						}
					}
				}
			}
		}

		fmt.Fprintln(os.Stderr, fmt.Sprintf("%s", msg))
		os.Exit(1)
	}
}

func (c *publishCmd) flags() {
	gnuflag.BoolVar(&c.makePublic, "public", false, i18n.G("Make the image public"))
	gnuflag.Var(&c.pAliases, "alias", i18n.G("New alias to define at target"))
	gnuflag.BoolVar(&c.Force, "force", false, i18n.G("Stop the container if currently running"))
	gnuflag.BoolVar(&c.Force, "f", false, i18n.G("Stop the container if currently running"))
	gnuflag.StringVar(&c.compression_algorithm, "compression", "", i18n.G("Define a compression algorithm: for image or none"))
}

func (c *imageCmd) flags() {
	gnuflag.BoolVar(&c.publicImage, "public", false, i18n.G("Make image public"))
	gnuflag.BoolVar(&c.copyAliases, "copy-aliases", false, i18n.G("Copy aliases from source"))
	gnuflag.BoolVar(&c.autoUpdate, "auto-update", false, i18n.G("Keep the image up to date after initial copy"))
	gnuflag.Var(&c.addAliases, "alias", i18n.G("New alias to define at target"))
	gnuflag.StringVar(&c.format, "format", "table", i18n.G("Format"))
}

func (c *listCmd) typeColumnData(cInfo shared.ContainerInfo, cState *shared.ContainerState, cSnaps []shared.SnapshotInfo) string {
	if cInfo.Ephemeral {
		return i18n.G("EPHEMERAL")
	} else {
		return i18n.G("PERSISTENT")
	}
}

func (c *deleteCmd) run(config *lxd.Config, args []string) error {
	if len(args) == 0 {
		return errArgs
	}

	for _, nameArg := range args {
		remote, name := config.ParseRemoteAndContainer(nameArg)

		d, err := lxd.NewClient(config, remote)
		if err != nil {
			return err
		}

		if c.interactive {
			err := c.promptDelete(name)
			if err != nil {
				return err
			}
		}

		if shared.IsSnapshot(name) {
			return c.doDelete(d, name)
		}

		ct, err := d.ContainerInfo(name)
		if err != nil {
			return err
		}

		if ct.StatusCode != 0 && ct.StatusCode != shared.Stopped {
			if !c.force {
				return fmt.Errorf(i18n.G("The container is currently running, stop it first or pass --force."))
			}

			resp, err := d.Action(name, shared.Stop, -1, true, false)
			if err != nil {
				return err
			}

			op, err := d.WaitFor(resp.Operation)
			if err != nil {
				return err
			}

			if op.StatusCode == shared.Failure {
				return fmt.Errorf(i18n.G("Stopping container failed!"))
			}

			if ct.Ephemeral == true {
				return nil
			}
		}

		if err := c.doDelete(d, name); err != nil {
			return err
		}
	}
	return nil
}

func (c *actionCmd) flags() {
	if c.hasTimeout {
		gnuflag.IntVar(&c.timeout, "timeout", -1, i18n.G("Time to wait for the container before killing it."))
		gnuflag.BoolVar(&c.force, "force", false, i18n.G("Force the container to shutdown."))
		gnuflag.BoolVar(&c.stateful, "stateful", false, i18n.G("Store the container state (only for stop)."))
		gnuflag.BoolVar(&c.stateless, "stateless", false, i18n.G("Ignore the container state (only forstart)."))
	}
}

func (c *imageCmd) showImages(images []shared.ImageInfo, filters []string) error {
	switch c.format {
	case listFormatTable:
		data := [][]string{}
		for _, image := range images {
			if !c.imageShouldShow(filters, &image) {
				continue
			}

			shortest := c.shortestAlias(image.Aliases)
			if len(image.Aliases) > 1 {
				shortest = fmt.Sprintf(i18n.G("%s (%d more)"), shortest, len(image.Aliases)-1)
			}
			fp := image.Fingerprint[0:12]
			public := i18n.G("no")
			description := c.findDescription(image.Properties)

			if image.Public {
				public = i18n.G("yes")
			}

			const layout = "Jan 2, 2006 at 3:04pm (MST)"
			uploaded := image.UploadDate.UTC().Format(layout)
			size := fmt.Sprintf("%.2fMB", float64(image.Size)/1024.0/1024.0)
			data = append(data, []string{shortest, fp, public, description, image.Architecture, size, uploaded})
		}

		table := tablewriter.NewWriter(os.Stdout)
		table.SetAutoWrapText(false)
		table.SetAlignment(tablewriter.ALIGN_LEFT)
		table.SetRowLine(true)
		table.SetHeader([]string{
			i18n.G("ALIAS"),
			i18n.G("FINGERPRINT"),
			i18n.G("PUBLIC"),
			i18n.G("DESCRIPTION"),
			i18n.G("ARCH"),
			i18n.G("SIZE"),
			i18n.G("UPLOAD DATE")})
		sort.Sort(SortImage(data))
		table.AppendBulk(data)
		table.Render()
	case listFormatJSON:
		data := make([]*shared.ImageInfo, len(images))
		for i := range images {
			data[i] = &images[i]
		}
		enc := json.NewEncoder(os.Stdout)
		err := enc.Encode(data)
		if err != nil {
			return err
		}
	default:
		return fmt.Errorf("invalid format %q", c.format)
	}

	return nil
}

func (c *configCmd) deviceSet(config *lxd.Config, which string, args []string) error {
	if len(args) < 6 {
		return errArgs
	}

	remote, name := config.ParseRemoteAndContainer(args[2])

	client, err := lxd.NewClient(config, remote)
	if err != nil {
		return err
	}

	devname := args[3]
	key := args[4]
	value := args[5]

	if which == "profile" {
		st, err := client.ProfileConfig(name)
		if err != nil {
			return err
		}

		dev, ok := st.Devices[devname]
		if !ok {
			return fmt.Errorf(i18n.G("The device doesn't exist"))
		}

		dev[key] = value
		st.Devices[devname] = dev

		err = client.PutProfile(name, *st)
		if err != nil {
			return err
		}
	} else {
		st, err := client.ContainerInfo(name)
		if err != nil {
			return err
		}

		dev, ok := st.Devices[devname]
		if !ok {
			return fmt.Errorf(i18n.G("The device doesn't exist"))
		}

		dev[key] = value
		st.Devices[devname] = dev

		err = client.UpdateContainerConfig(name, st.Brief())
		if err != nil {
			return err
		}
	}

	return err
}

func (c *actionCmd) run(config *lxd.Config, args []string) error {
	if len(args) == 0 {
		return errArgs
	}

	state := false

	// Only store state if asked to
	if c.action == "stop" && c.stateful {
		state = true
	}

	for _, nameArg := range args {
		remote, name := config.ParseRemoteAndContainer(nameArg)
		d, err := lxd.NewClient(config, remote)
		if err != nil {
			return err
		}

		if name == "" {
			return fmt.Errorf(i18n.G("Must supply container name for: ")+"\"%s\"", nameArg)
		}

		if c.action == shared.Start || c.action == shared.Stop {
			current, err := d.ContainerInfo(name)
			if err != nil {
				return err
			}

			// "start" for a frozen container means "unfreeze"
			if current.StatusCode == shared.Frozen {
				c.action = shared.Unfreeze
			}

			// Always restore state (if present) unless asked not to
			if c.action == shared.Start && current.Stateful && !c.stateless {
				state = true
			}
		}

		resp, err := d.Action(name, c.action, c.timeout, c.force, state)
		if err != nil {
			return err
		}

		if resp.Type != lxd.Async {
			return fmt.Errorf(i18n.G("bad result type from action"))
		}

		if err := d.WaitForSuccess(resp.Operation); err != nil {
			return fmt.Errorf("%s\n"+i18n.G("Try `lxc info --show-log %s` for more info"), err, name)
		}
	}
	return nil
}

func (c *deleteCmd) promptDelete(name string) error {
	reader := bufio.NewReader(os.Stdin)
	fmt.Printf(i18n.G("Remove %s (yes/no): "), name)
	input, _ := reader.ReadString('\n')
	input = strings.TrimSuffix(input, "\n")
	if !shared.StringInSlice(strings.ToLower(input), []string{i18n.G("yes")}) {
		return fmt.Errorf(i18n.G("User aborted delete operation."))
	}

	return nil
}

func execIfAliases(config *lxd.Config, origArgs []string) {
	newArgs, expanded := expandAlias(config, origArgs)
	if !expanded {
		return
	}

	path, err := exec.LookPath(origArgs[0])
	if err != nil {
		fmt.Fprintf(os.Stderr, i18n.G("processing aliases failed %s\n"), err)
		os.Exit(5)
	}
	ret := syscall.Exec(path, newArgs, syscall.Environ())
	fmt.Fprintf(os.Stderr, i18n.G("processing aliases failed %s\n"), ret)
	os.Exit(5)
}

func (c *networkCmd) doNetworkDetach(client *lxd.Client, name string, args []string) error {
	if len(args) < 1 || len(args) > 2 {
		return errArgs
	}

	containerName := args[0]
	devName := ""
	if len(args) > 1 {
		devName = args[1]
	}

	container, err := client.ContainerInfo(containerName)
	if err != nil {
		return err
	}

	if devName == "" {
		for n, d := range container.Devices {
			if d["type"] == "nic" && d["parent"] == name {
				if devName != "" {
					return fmt.Errorf(i18n.G("More than one device matches, specify the device name."))
				}

				devName = n
			}
		}
	}

	if devName == "" {
		return fmt.Errorf(i18n.G("No device found for this network"))
	}

	device, ok := container.Devices[devName]
	if !ok {
		return fmt.Errorf(i18n.G("The specified device doesn't exist"))
	}

	if device["type"] != "nic" || device["parent"] != name {
		return fmt.Errorf(i18n.G("The specified device doesn't match the network"))
	}

	resp, err := client.ContainerDeviceDelete(containerName, devName)
	if err != nil {
		return err
	}

	return client.WaitForSuccess(resp.Operation)
}

func (c *configCmd) deviceRm(config *lxd.Config, which string, args []string) error {
	if len(args) < 4 {
		return errArgs
	}
	remote, name := config.ParseRemoteAndContainer(args[2])

	client, err := lxd.NewClient(config, remote)
	if err != nil {
		return err
	}

	devname := args[3]
	var resp *lxd.Response
	if which == "profile" {
		resp, err = client.ProfileDeviceDelete(name, devname)
	} else {
		resp, err = client.ContainerDeviceDelete(name, devname)
	}
	if err != nil {
		return err
	}
	if which != "profile" {
		err = client.WaitForSuccess(resp.Operation)
	}
	if err == nil {
		fmt.Printf(i18n.G("Device %s removed from %s")+"\n", devname, name)
	}
	return err
}

func (c *configCmd) deviceAdd(config *lxd.Config, which string, args []string) error {
	if len(args) < 5 {
		return errArgs
	}
	remote, name := config.ParseRemoteAndContainer(args[2])

	client, err := lxd.NewClient(config, remote)
	if err != nil {
		return err
	}

	devname := args[3]
	devtype := args[4]
	var props []string
	if len(args) > 5 {
		props = args[5:]
	} else {
		props = []string{}
	}

	var resp *lxd.Response
	if which == "profile" {
		resp, err = client.ProfileDeviceAdd(name, devname, devtype, props)
	} else {
		resp, err = client.ContainerDeviceAdd(name, devname, devtype, props)
	}
	if err != nil {
		return err
	}
	fmt.Printf(i18n.G("Device %s added to %s")+"\n", devname, name)
	if which == "profile" {
		return nil
	}
	return client.WaitForSuccess(resp.Operation)
}

func getRemoteCertificate(address string) (*x509.Certificate, error) {
	// Setup a permissive TLS config
	tlsConfig, err := shared.GetTLSConfig("", "", nil)
	if err != nil {
		return nil, err
	}

	tlsConfig.InsecureSkipVerify = true
	tr := &http.Transport{
		TLSClientConfig: tlsConfig,
		Dial:            shared.RFC3493Dialer,
		Proxy:           shared.ProxyFromEnvironment,
	}

	// Connect
	client := &http.Client{Transport: tr}
	resp, err := client.Get(address)
	if err != nil {
		return nil, err
	}

	// Retrieve the certificate
	if resp.TLS == nil || len(resp.TLS.PeerCertificates) == 0 {
		return nil, fmt.Errorf(i18n.G("Unable to read remote TLS certificate"))
	}

	return resp.TLS.PeerCertificates[0], nil
}