Golang fmt.Fprintf函數代碼示例

func xmlToSocketLogWriter(filename string, props []xmlProperty, enabled bool) (SocketLogWriter, bool) {
	endpoint := ""
	protocol := "udp"

	for _, prop := range props {
		switch prop.Name {
		case "endpoint":
			endpoint = strings.Trim(prop.Value, " \r\n")
		case "protocol":
			protocol = strings.Trim(prop.Value, " \r\n")
		default:
			fmt.Fprintf(os.Stderr, "LoadConfiguration: Warning: Unknown property \"%s\" for file filter in %s\n", prop.Name, filename)
		}
	}

	if len(endpoint) == 0 {
		fmt.Fprintf(os.Stderr, "LoadConfiguration: Error: Required property \"%s\" for file filter missing in %s\n", "endpoint", filename)
		return nil, false
	}

	if !enabled {
		return nil, true
	}

	return NewSocketLogWriter(protocol, endpoint), true
}

// identityConfig initializes a new identity.
func identityConfig(out io.Writer, nbits int) (Identity, error) {
	// TODO guard higher up
	ident := Identity{}
	if nbits < 1024 {
		return ident, errors.New("Bitsize less than 1024 is considered unsafe.")
	}

	fmt.Fprintf(out, "generating %v-bit RSA keypair...", nbits)
	sk, pk, err := ci.GenerateKeyPair(ci.RSA, nbits)
	if err != nil {
		return ident, err
	}
	fmt.Fprintf(out, "done\n")

	// currently storing key unencrypted. in the future we need to encrypt it.
	// TODO(security)
	skbytes, err := sk.Bytes()
	if err != nil {
		return ident, err
	}
	ident.PrivKey = base64.StdEncoding.EncodeToString(skbytes)

	id, err := peer.IDFromPublicKey(pk)
	if err != nil {
		return ident, err
	}
	ident.PeerID = id.Pretty()
	fmt.Fprintf(out, "peer identity: %s\n", ident.PeerID)
	return ident, nil
}

func (p *Addr) printText(w io.Writer, codeblockEnd int) {
	switch p.Type {
	case None:
	case Reg, Xmm:
		name := p.Value.(Register).String()
		io.WriteString(w, name)
	case Ind:
		name := p.Value.(Register).String()
		if p.Disp != 0 {
			fmt.Fprintf(w, "%x+(%s)", p.Disp, name)
		} else {
			fmt.Fprintf(w, "(%s)", name)
		}
	case Rel8, Rel16, Rel32:
		if codeblockEnd != 0 {
			// We know where we are, print the absolute jump point.
			blk := int64(codeblockEnd) + p.valueInt64()
			fmt.Fprintf(w, "%s:(%06x)", p.Name, blk)
		} else {
			fmt.Fprintf(w, "%s:(%x)", p.Name, p.Value)
		}
	case Imm8, Imm16, Imm32, Imm64:
		fmt.Fprintf(w, "0x%x", p.Value)
	case Label:
		fmt.Fprint(w, p.Name)
	default:
		panic(fmt.Sprintf("unknown addr type: %v", p.Type))
	}
}

func check_fatal(err error) {
	if err != nil {
		fmt.Fprintf(os.Stderr, "**** KURWA!!! ****\n")
		fmt.Fprintf(os.Stderr, "Error encountered was of FATAL. Is of wrong. Gib correct config pl0x.\n")
		panic(err)
	}
}

func postscript(out *bytes.Buffer, name string) {
	fmt.Fprintf(out, "__start_%s()\n", name)
	fmt.Fprintf(out, `{
    local cur prev words cword split
    _init_completion -s || return

    local completions_func
    local c=0
    local flags=()
    local two_word_flags=()
    local flags_with_completion=()
    local flags_completion=()
    local commands=("%s")
    local must_have_one_flag=()
    local must_have_one_noun=()
    local last_command
    local nouns=()

    __handle_word
}

`, name)
	fmt.Fprintf(out, "complete -F __start_%s %s\n", name, name)
	fmt.Fprintf(out, "# ex: ts=4 sw=4 et filetype=sh\n")
}

func (f *FingerClient) Execute() error {
	f.finger.Start()
	defer f.finger.Stop()
	resp := new(Response)
	Logger.Debugf("Executing finger %s", f.Path)
	methodName := "Finger.Execute"
	if f.args.Flags.Help {
		methodName = "Finger.Help"
	}
	if err := f.finger.Call(methodName, f.args, &resp); err != nil {
		Logger.Debugf(resp.SprintLog())
		return err
	}
	stdout := resp.SprintStdout()
	stderr := resp.SprintStderr()
	fingerLog := resp.SprintLog()
	if stdout != "" {
		fmt.Println(stdout)
	}
	if stderr != "" {
		fmt.Fprintf(os.Stderr, stderr+"\n")
	}
	if fingerLog != "" {
		fmt.Fprintf(os.Stderr, fingerLog+"\n")
	}
	return nil
}

func urlShortenerMain(client *http.Client, argv []string) {
	if len(argv) != 1 {
		fmt.Fprintf(os.Stderr, "Usage: urlshortener http://goo.gl/xxxxx     (to look up details)\n")
		fmt.Fprintf(os.Stderr, "       urlshortener http://example.com/long (to shorten)\n")
		return
	}

	svc, _ := urlshortener.New(client)
	urlstr := argv[0]

	// short -> long
	if strings.HasPrefix(urlstr, "http://goo.gl/") || strings.HasPrefix(urlstr, "https://goo.gl/") {
		url, err := svc.Url.Get(urlstr).Do()
		if err != nil {
			log.Fatalf("URL Get: %v", err)
		}
		fmt.Printf("Lookup of %s: %s\n", urlstr, url.LongUrl)
		return
	}

	// long -> short
	url, err := svc.Url.Insert(&urlshortener.Url{
		Kind:    "urlshortener#url", // Not really needed
		LongUrl: urlstr,
	}).Do()
	if err != nil {
		log.Fatalf("URL Insert: %v", err)
	}
	fmt.Printf("Shortened %s => %s\n", urlstr, url.Id)
}

// describeObjects prints out information about the objects of a template
func (d *TemplateDescriber) describeObjects(objects []runtime.Object, out *tabwriter.Writer) {
	formatString(out, "Objects", " ")
	indent := "    "
	for _, obj := range objects {
		if d.ObjectDescriber != nil {
			output, err := d.DescribeObject(obj)
			if err != nil {
				fmt.Fprintf(out, "error: %v\n", err)
				continue
			}
			fmt.Fprint(out, output)
			fmt.Fprint(out, "\n")
			continue
		}

		_, kind, _ := d.ObjectTyper.ObjectVersionAndKind(obj)
		meta := kapi.ObjectMeta{}
		meta.Name, _ = d.MetadataAccessor.Name(obj)
		fmt.Fprintf(out, fmt.Sprintf("%s%s\t%s\n", indent, kind, meta.Name))
		//meta.Annotations, _ = d.MetadataAccessor.Annotations(obj)
		//meta.Labels, _ = d.MetadataAccessor.Labels(obj)
		/*if len(meta.Labels) > 0 {
			formatString(out, indent+"Labels", formatLabels(meta.Labels))
		}
		formatAnnotations(out, meta, indent)*/
	}
}

//line fitted_type.got:17
func drawFittedTableQLetters(rSeq, qSeq alphabet.QLetters, index alphabet.Index, table []int, a [][]int) {
	tw := tabwriter.NewWriter(os.Stdout, 0, 0, 0, ' ', tabwriter.AlignRight|tabwriter.Debug)
	fmt.Printf("rSeq: %s\n", rSeq)
	fmt.Printf("qSeq: %s\n", qSeq)
	fmt.Fprint(tw, "\tqSeq\t")
	for _, l := range qSeq {
		fmt.Fprintf(tw, "%c\t", l)
	}
	fmt.Fprintln(tw)

	r, c := rSeq.Len()+1, qSeq.Len()+1
	fmt.Fprint(tw, "rSeq\t")
	for i := 0; i < r; i++ {
		if i != 0 {
			fmt.Fprintf(tw, "%c\t", rSeq[i-1].L)
		}

		for j := 0; j < c; j++ {
			p := pointerFittedQLetters(rSeq, qSeq, i, j, table, index, a, c)
			if p != "" {
				fmt.Fprintf(tw, "%s % 3v\t", p, table[i*c+j])
			} else {
				fmt.Fprintf(tw, "%v\t", table[i*c+j])
			}
		}
		fmt.Fprintln(tw)
	}
	tw.Flush()
}

// Single mode writes a single condensed line.  Used for debugging comparison with tester/tester.
func (p *props) writeSingle(w io.Writer) {
	fmt.Fprintf(w, `"0","0","1","%d","0","%s",`, p.ftype, escape(p.fname))
	fmt.Fprintf(w, `"%x","%x",`, p.ident, p.dident)
	fmt.Fprintf(w, `"%s","%s","%s",`, p.ext, p.mime, escape(p.bname))
	fmt.Fprintf(w, `"%x",`, p.chash)
	fmt.Fprintf(w, "\"%d\",\"%d\",\"%d\"\n", p.size, p.isize.X, p.isize.Y)
}

func (c *AppRemove) Run(context *cmd.Context, client cmd.Doer) error {
	appName, err := c.Guess()
	if err != nil {
		return err
	}
	var answer string
	if !*tsuru.AssumeYes {
		fmt.Fprintf(context.Stdout, `Are you sure you want to remove app "%s"? (y/n) `, appName)
		fmt.Fscanf(context.Stdin, "%s", &answer)
		if answer != "y" {
			fmt.Fprintln(context.Stdout, "Abort.")
			return nil
		}
	}
	url := cmd.GetUrl(fmt.Sprintf("/apps/%s", appName))
	request, err := http.NewRequest("DELETE", url, nil)
	if err != nil {
		return err
	}
	_, err = client.Do(request)
	if err != nil {
		return err
	}
	fmt.Fprintf(context.Stdout, `App "%s" successfully removed!`+"\n", appName)
	return nil
}

// Load loads the source into the config defined by struct s
func (f *FlagLoader) Load(s interface{}) error {
	strct := structs.New(s)
	structName := strct.Name()

	flagSet := flag.NewFlagSet(structName, flag.ExitOnError)
	f.flagSet = flagSet

	for _, field := range strct.Fields() {
		f.processField(field.Name(), field)
	}

	flagSet.Usage = func() {
		fmt.Fprintf(os.Stderr, "Usage of %s:\n", os.Args[0])
		flagSet.PrintDefaults()
		fmt.Fprintf(os.Stderr, "\nGenerated environment variables:\n")
		e := &EnvironmentLoader{
			Prefix:    f.EnvPrefix,
			CamelCase: f.CamelCase,
		}
		e.PrintEnvs(s)
		fmt.Println("")
	}

	args := os.Args[1:]
	if f.Args != nil {
		args = f.Args
	}

	return flagSet.Parse(args)
}

// mkzcgo writes zcgo.go for the go/build package:
//
//	package build
//  var cgoEnabled = map[string]bool{}
//
// It is invoked to write go/build/zcgo.go.
func mkzcgo(dir, file string) {
	// sort for deterministic zcgo.go file
	var list []string
	for plat, hasCgo := range cgoEnabled {
		if hasCgo {
			list = append(list, plat)
		}
	}
	sort.Strings(list)

	var buf bytes.Buffer

	fmt.Fprintf(&buf,
		"// auto generated by go tool dist\n"+
			"\n"+
			"package build\n"+
			"\n"+
			"var cgoEnabled = map[string]bool{\n")
	for _, plat := range list {
		fmt.Fprintf(&buf, "\t%q: true,\n", plat)
	}
	fmt.Fprintf(&buf, "}")

	writefile(buf.String(), file, writeSkipSame)
}

// Create a new DNS info provider.
func ExampleNewDNSInfoProvider() {

	// create a DNS client
	credentials := APICredentials{"[email protected]", "ApItOken"}
	dnsClient, clientError := NewDNSClient(credentials)
	if clientError != nil {
		fmt.Fprintf(os.Stderr, "Unable to create DNS client: %s", clientError.Error())
		os.Exit(1)
	}

	// create a new DNS info provider instance
	dnsInfoProvider := NewDNSInfoProvider(dnsClient)

	// get all domain names
	domainNames, domainNamesError := dnsInfoProvider.GetDomainNames()
	if domainNamesError != nil {
		fmt.Fprintf(os.Stderr, "Unable to fetch domain names: %s", domainNamesError.Error())
		os.Exit(1)
	}

	// print a list all domain names
	for _, domainName := range domainNames {
		fmt.Fprintf(os.Stdout, "%s\n", domainName)
	}
}

func verifyCertWithSystem(block *pem.Block, add func(*Certificate)) {
	data := pem.EncodeToMemory(block)
	var cmd *exec.Cmd
	if needsTmpFiles() {
		f, err := ioutil.TempFile("", "cert")
		if err != nil {
			fmt.Fprintf(os.Stderr, "can't create temporary file for cert: %v", err)
			return
		}
		defer os.Remove(f.Name())
		if _, err := f.Write(data); err != nil {
			fmt.Fprintf(os.Stderr, "can't write temporary file for cert: %v", err)
			return
		}
		if err := f.Close(); err != nil {
			fmt.Fprintf(os.Stderr, "can't write temporary file for cert: %v", err)
			return
		}
		cmd = exec.Command("/usr/bin/security", "verify-cert", "-c", f.Name(), "-l")
	} else {
		cmd = exec.Command("/usr/bin/security", "verify-cert", "-c", "/dev/stdin", "-l")
		cmd.Stdin = bytes.NewReader(data)
	}
	if cmd.Run() == nil {
		// Non-zero exit means untrusted
		cert, err := ParseCertificate(block.Bytes)
		if err != nil {
			return
		}

		add(cert)
	}
}