Golang strings.Trim函数代码示例

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
}

func (p *Problem) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
	pp := struct {
		Id                 string       `xml:"id"`
		Name               string       `xml:"name"`
		Available          string       `xml:"available"`
		ProblemTimeLimit   string       `xml:"problemtimelimit"`
		ProblemMemoryLimit string       `xml:"problemmemorylimit"`
		Status             Status       `xml:"status"`
		SolvedList         []SolvedUser `xml:"solved_list>user"`
	}{}
	if err := d.DecodeElement(&pp, &start); err != nil {
		return err
	}

	available, err := strconv.Atoi(strings.Trim(pp.Available, "\n"))
	problemTimeLimit, err := strconv.Atoi(strings.Trim(pp.ProblemTimeLimit, "\n"))
	problemMemoryLimit, err := strconv.Atoi(strings.Trim(pp.ProblemMemoryLimit, "\n"))
	if err != nil {
		return err
	}

	*p = Problem{
		Id:                 strings.Trim(pp.Id, "\n"),
		Name:               strings.Trim(pp.Name, "\n"),
		Available:          available,
		ProblemTimeLimit:   problemTimeLimit,
		ProblemMemoryLimit: problemMemoryLimit,
		Status:             pp.Status,
		SolvedList:         pp.SolvedList,
	}
	return nil
}

func cleanRawValue(s string) string {
	s = strings.Trim(s, " \t\n\r")
	if len(s) == 0 {
		return ""
	}

	inString := false
	escape := false
	for i := 0; i < len(s); i++ {
		c := s[i]
		if escape {
			escape = false
			continue
		}
		if c == '"' {
			inString = !inString
			continue
		}
		if inString && c == '\\' {
			escape = true
			continue
		}
		if c == '#' && !inString {
			return strings.Trim(s[0:i], " \t\n\r")
		}
	}

	return s
}

func (b *buildFile) Build(context io.Reader) (string, error) {
	// FIXME: @creack "name" is a terrible variable name
	name, err := ioutil.TempDir("", "docker-build")
	if err != nil {
		return "", err
	}
	if err := Untar(context, name); err != nil {
		return "", err
	}
	defer os.RemoveAll(name)
	b.context = name
	filename := path.Join(name, "Dockerfile")
	if _, err := os.Stat(filename); os.IsNotExist(err) {
		return "", fmt.Errorf("Can't build a directory with no Dockerfile")
	}
	fileBytes, err := ioutil.ReadFile(filename)
	if err != nil {
		return "", err
	}
	dockerfile := string(fileBytes)
	dockerfile = lineContinuation.ReplaceAllString(dockerfile, "")
	stepN := 0
	for _, line := range strings.Split(dockerfile, "\n") {
		line = strings.Trim(strings.Replace(line, "\t", " ", -1), " \t\r\n")
		// Skip comments and empty line
		if len(line) == 0 || line[0] == '#' {
			continue
		}
		tmp := strings.SplitN(line, " ", 2)
		if len(tmp) != 2 {
			return "", fmt.Errorf("Invalid Dockerfile format")
		}
		instruction := strings.ToLower(strings.Trim(tmp[0], " "))
		arguments := strings.Trim(tmp[1], " ")

		method, exists := reflect.TypeOf(b).MethodByName("Cmd" + strings.ToUpper(instruction[:1]) + strings.ToLower(instruction[1:]))
		if !exists {
			fmt.Fprintf(b.out, "# Skipping unknown instruction %s\n", strings.ToUpper(instruction))
			continue
		}

		stepN += 1
		fmt.Fprintf(b.out, "Step %d : %s %s\n", stepN, strings.ToUpper(instruction), arguments)

		ret := method.Func.Call([]reflect.Value{reflect.ValueOf(b), reflect.ValueOf(arguments)})[0].Interface()
		if ret != nil {
			return "", ret.(error)
		}

		fmt.Fprintf(b.out, " ---> %v\n", utils.TruncateID(b.image))
	}
	if b.image != "" {
		fmt.Fprintf(b.out, "Successfully built %s\n", utils.TruncateID(b.image))
		if b.rm {
			b.clearTmp(b.tmpContainers)
		}
		return b.image, nil
	}
	return "", fmt.Errorf("An error occurred during the build\n")
}

func (p linux) findRootDevicePath() (string, error) {
	mounts, err := p.diskManager.GetMountsSearcher().SearchMounts()

	if err != nil {
		return "", bosherr.WrapError(err, "Searching mounts")
	}

	for _, mount := range mounts {
		if mount.MountPoint == "/" && strings.HasPrefix(mount.PartitionPath, "/dev/") {
			p.logger.Debug(logTag, "Found root partition: `%s'", mount.PartitionPath)

			stdout, _, _, err := p.cmdRunner.RunCommand("readlink", "-f", mount.PartitionPath)
			if err != nil {
				return "", bosherr.WrapError(err, "Shelling out to readlink")
			}
			rootPartition := strings.Trim(stdout, "\n")
			p.logger.Debug(logTag, "Symlink is: `%s'", rootPartition)

			validRootPartition := regexp.MustCompile(`^/dev/[a-z]+1$`)
			if !validRootPartition.MatchString(rootPartition) {
				return "", bosherr.Error("Root partition is not the first partition")
			}

			return strings.Trim(rootPartition, "1"), nil
		}
	}

	return "", bosherr.Error("Getting root partition device")
}

// as per http://www.mssqltips.com/sqlservertip/2563/understanding-the-sql-server-select-version-command/
func serverVersion(db *sql.DB) (sqlVersion, sqlPartNumber, osVersion string, err error) {
	var v string
	if err = db.QueryRow("select @@version").Scan(&v); err != nil {
		return "", "", "", err
	}
	a := strings.SplitN(v, "\n", -1)
	if len(a) < 4 {
		return "", "", "", errors.New("SQL Server version string must have at least 4 lines: " + v)
	}
	for i := range a {
		a[i] = strings.Trim(a[i], " \t")
	}
	l1 := strings.SplitN(a[0], "-", -1)
	if len(l1) != 2 {
		return "", "", "", errors.New("SQL Server version first line must have - in it: " + v)
	}
	i := strings.Index(a[3], " on ")
	if i < 0 {
		return "", "", "", errors.New("SQL Server version fourth line must have 'on' in it: " + v)
	}
	sqlVersion = l1[0] + a[3][:i]
	osVersion = a[3][i+4:]
	sqlPartNumber = strings.Trim(l1[1], " ")
	l12 := strings.SplitN(sqlPartNumber, " ", -1)
	if len(l12) < 2 {
		return "", "", "", errors.New("SQL Server version first line must have space after part number in it: " + v)
	}
	sqlPartNumber = l12[0]
	return sqlVersion, sqlPartNumber, osVersion, nil
}

func parsePortRange(ports string) (uint16, uint16, error) {
	segments := strings.Split(ports, "-")

	fromPortStr := ""
	toPortStr := ""

	if len(segments) == 1 {
		fromPortStr = segments[0]
		toPortStr = fromPortStr
	} else if len(segments) == 2 {
		fromPortStr = segments[0]
		toPortStr = segments[1]
	}

	fromPort, err := strconv.Atoi(strings.Trim(fromPortStr, " "))
	if err != nil {
		return 0, 0, err
	}

	toPort, err := strconv.Atoi(strings.Trim(toPortStr, " "))
	if err != nil {
		return 0, 0, err
	}

	return uint16(fromPort), uint16(toPort), nil
}

//initial the configure by .properties file.
func (f *Fcfg) InitWithReader(reader *bufio.Reader) error {
	for {
		//read one line
		bys, err := ReadLine(reader, 10000, false)
		if err != nil {
			break
		}
		//
		line := string(bys)
		line = strings.Trim(line, " ")
		if len(line) < 1 {
			continue
		}
		ps := strings.Split(line, "#")
		if len(ps) < 1 || len(ps[0]) < 1 {
			continue
		}
		line = ps[0]
		ps = strings.SplitN(line, "=", 2)
		if len(ps) < 2 {
			fmt.Println(os.Stderr, "found not value key:", ps[0])
			continue
		}
		key := f.EnvReplace(strings.Trim(ps[0], " "))
		val := f.EnvReplace(strings.Trim(ps[1], " "))
		(*f)[key] = val
	}
	return nil
}

//连接服务器
func connectServer() {
	//接通
	conn, err := net.Dial("tcp", "localhost:7777")
	checkError(err)
	fmt.Println("连接成功！\n")
	//输入
	inputReader := bufio.NewReader(os.Stdin)
	fmt.Println("你是谁？")
	name, _ := inputReader.ReadString('\n')
	//
	trimName := strings.Trim(name, "\r\n")
	conn.Write([]byte(trimName + " 接入了\n "))
	fmt.Println("我们来聊天吧！按quit退出")
	for {
		//读一行
		input, _ := inputReader.ReadString('\n')
		trimInput := strings.Trim(input, "\r\n")
		//如果quit就退出
		if trimInput == "quit" {
			fmt.Println("再见")
			conn.Write([]byte(trimName + " 退出了 "))
			return
		}
		//写出来
		_, err = conn.Write([]byte(trimName + " says: " + trimInput))
		go doServerStuff(conn)
	}
}

func (s systemctl) parseStatus(sData string, err error) (Status, error) {
	var st Status
	lines := strings.Split(sData, "\n")
	if err != nil {
		errString := err.Error()
		idx := strings.LastIndex(errString, " ")
		exitCode, _ := strconv.Atoi(errString[idx+1 : len(errString)])
		// SystemD status is 3 when service is stopped or does not exists
		if exitCode != 3 {
			return st, err
		}
		for _, line := range lines {
			line = strings.Trim(line, " ")
			// When services does not exists then "Loaded" contains "not-found"
			if strings.HasPrefix(line, "Loaded") && strings.Contains(line, "not-found") {
				return st, err
			}
		}
	}
	for _, line := range lines {
		line = strings.Trim(line, " ")
		if strings.HasPrefix(line, "Active") {
			st.Running = strings.Contains(line, "active (running)")
			if !st.Running {
				break
			}
		} else if strings.HasPrefix(line, "Main PID") {
			pid := line[10:len(line)]
			idx := strings.Index(pid, " ")
			pid = pid[0:idx]
			st.PID, _ = strconv.Atoi(pid)
		}
	}
	return st, nil
}

// https://www.hackerrank.com/challenges/angry-professor
func angryprof() {
	t, reader := readFirstIntLine()

	for i := 0; i < t; i++ {
		// Read in N and K
		line, _ := reader.ReadString('\n')
		row := strings.Split(strings.Trim(line, "\n"), " ")
		strconv.Atoi(row[0])
		k, _ := strconv.Atoi(row[1])

		// Read in the students
		line, _ = reader.ReadString('\n')
		var nArrived int
		for _, s := range splitInt(strings.Trim(line, "\n")) {
			if s <= 0 {
				nArrived++
			}
		}

		if nArrived >= k {
			fmt.Println("NO")
		} else {
			fmt.Println("YES")
		}
	}
}

// Chain performs all the child derivations necessary to end up with the key
// described with BIP32 notations, eg. m/44'/0'/1'/0/3.
func (k *Key) Chain(chain string) (*Key, error) {
	low := strings.ToLower(chain)
	splits := strings.Split(low, "/")
	m := strings.Trim(splits[0], " ")
	if m == "m" {
		if k.depth != 0 {
			return nil, fmt.Errorf("Origin key isn't a master.")
		}
		if len(splits) == 1 {
			return k, nil
		}
		splits = splits[1:]
	}
	key := k
	for i, s := range splits {
		t := strings.Trim(s, " ")
		var harden uint32
		end := t[len(t)-1]
		if end == 'h' || end == '\'' {
			harden = 0x80000000
			t = t[:len(t)-1]
		}
		u, err := strconv.ParseUint(strings.Trim(t, " "), 10, 32)
		if err != nil {
			return nil, fmt.Errorf("Couldn't parse number at position %d (%s): %v",
				i, t, err)
		}
		key, err = key.Child(uint32(u) + harden)
		if err != nil {
			return nil, fmt.Errorf("Couldn't derive child #%d (%s): %v", i, s, err)
		}
	}
	return key, nil
}

func (d *pgDataStore) addCertWithTx(tx *pgx.Tx, c *router.Certificate) error {
	c.Cert = strings.Trim(c.Cert, " \n")
	c.Key = strings.Trim(c.Key, " \n")

	if _, err := tls.X509KeyPair([]byte(c.Cert), []byte(c.Key)); err != nil {
		return httphelper.JSONError{
			Code:    httphelper.ValidationErrorCode,
			Message: "Certificate invalid: " + err.Error(),
		}
	}

	tlsCertSHA256 := sha256.Sum256([]byte(c.Cert))
	if err := tx.QueryRow("select_certificate_by_sha", tlsCertSHA256[:]).Scan(&c.ID, &c.CreatedAt, &c.UpdatedAt); err != nil {
		if err := tx.QueryRow("insert_certificate", c.Cert, c.Key, tlsCertSHA256[:]).Scan(&c.ID, &c.CreatedAt, &c.UpdatedAt); err != nil {
			return err
		}
	}
	for _, rid := range c.Routes {
		if _, err := tx.Exec("delete_route_certificate_by_route_id", rid); err != nil {
			return err
		}
		if _, err := tx.Exec("insert_route_certificate", rid, c.ID); err != nil {
			return err
		}
	}
	return nil
}

func InspectJson(ins []string) (out []string) {
	var re []string

	for _, in := range ins {
		if JsonPart != "" {
			in = JsonPart + in
		}
		in = strings.Trim(strings.TrimSpace(in), " ,")
		charopen := 0
		charclose := 0
		for i, r := range in {
			c := string(r)
			if c == "{" {
				charopen += 1
			} else if c == "}" {
				charclose += 1
			}

			if charopen == charclose && (charclose != 0 && charopen != 0) {
				if len(in) == i+1 {
					JsonPart = ""
				} else {
					JsonPart = in[i+1:]
				}
				re = append(re, strings.Trim(strings.TrimSpace(in[:i+1]), " ,"))
				break
			}
			if charopen != charclose || (charclose == 0 && charopen == 0) {
				JsonPart = in
			}
		}

	}
	return re
}

func SMSHandler(w http.ResponseWriter, r *http.Request) {
	sms := r.URL.Query().Get("Body")
	sms = strings.Trim(sms, "8575-2838")
	if sms == "" {
		log.Println("Blank body.")
		SendSMS(w, r, "Please send a text with: \"Name\" \"[email protected]\"")
		return
	}
	info := strings.Fields(sms)
	name := strings.Join(info[:len(info)-1], " ")
	email := info[len(info)-1]
	name = strings.Trim(name, "\"")
	if name == "" {
		log.Println("Blank name.")
		SendSMS(w, r, "Please send a text with: \"Name\" \"[email protected]\"")
		return
	}
	email = strings.Trim(email, "\"")
	address := fmt.Sprintf("%s <%s>", name, email)
	_, err := mail.ParseAddress(address)
	if err != nil {
		SendSMS(w, r, "Please try again with a valid email address.")
		return
	}
	signup := Signup{Name: name, Email: email, Raw: sms, Timestamp: time.Now()}
	log.Println(signup)
	c := mgoSession.DB("sms_signup").C("signups")
	err = c.Insert(signup)
	if err != nil {
		log.Println(err.Error())
	}
	SendSMS(w, r, fmt.Sprintf("Thanks for signing up, %s!", info[0]))
}