Golang nat.ParsePortRange函数代码示例

//based on expose opt parsing in Docker
func parseDockerExposeOpt(values []string) (map[docker.Port]struct{}, error) {
	exposedPorts := map[docker.Port]struct{}{}

	for _, raw := range values {
		if strings.Contains(raw, ":") {
			return nil, fmt.Errorf("Invalid EXPOSE format: %s", raw)
		}

		proto, ports := nat.SplitProtoPort(raw)
		startPort, endPort, err := nat.ParsePortRange(ports)
		if err != nil {
			return nil, fmt.Errorf("Invalid port range in EXPOSE: %s / error: %s", raw, err)
		}

		for i := startPort; i <= endPort; i++ {
			portInfo, err := nat.NewPort(proto, strconv.FormatUint(i, 10))
			if err != nil {
				return nil, err
			}

			exposedPorts[docker.Port(portInfo)] = struct{}{}
		}
	}
	return exposedPorts, nil
}

//.........这里部分代码省略.........
		runCmd     strslice.StrSlice
		entrypoint strslice.StrSlice
		image      = cmd.Arg(0)
	)
	if len(parsedArgs) > 1 {
		runCmd = strslice.StrSlice(parsedArgs[1:])
	}
	if *flEntrypoint != "" {
		entrypoint = strslice.StrSlice{*flEntrypoint}
	}
	// Validate if the given hostname is RFC 1123 (https://tools.ietf.org/html/rfc1123) compliant.
	hostname := *flHostname
	if hostname != "" {
		matched, _ := regexp.MatchString("^(([[:alnum:]]|[[:alnum:]][[:alnum:]\\-]*[[:alnum:]])\\.)*([[:alnum:]]|[[:alnum:]][[:alnum:]\\-]*[[:alnum:]])$", hostname)
		if !matched {
			return nil, nil, nil, cmd, fmt.Errorf("invalid hostname format for --hostname: %s", hostname)
		}
	}

	ports, portBindings, err := nat.ParsePortSpecs(flPublish.GetAll())
	if err != nil {
		return nil, nil, nil, cmd, err
	}

	// Merge in exposed ports to the map of published ports
	for _, e := range flExpose.GetAll() {
		if strings.Contains(e, ":") {
			return nil, nil, nil, cmd, fmt.Errorf("invalid port format for --expose: %s", e)
		}
		//support two formats for expose, original format <portnum>/[<proto>] or <startport-endport>/[<proto>]
		proto, port := nat.SplitProtoPort(e)
		//parse the start and end port and create a sequence of ports to expose
		//if expose a port, the start and end port are the same
		start, end, err := nat.ParsePortRange(port)
		if err != nil {
			return nil, nil, nil, cmd, fmt.Errorf("invalid range format for --expose: %s, error: %s", e, err)
		}
		for i := start; i <= end; i++ {
			p, err := nat.NewPort(proto, strconv.FormatUint(i, 10))
			if err != nil {
				return nil, nil, nil, cmd, err
			}
			if _, exists := ports[p]; !exists {
				ports[p] = struct{}{}
			}
		}
	}

	// parse device mappings
	deviceMappings := []container.DeviceMapping{}
	for _, device := range flDevices.GetAll() {
		deviceMapping, err := ParseDevice(device)
		if err != nil {
			return nil, nil, nil, cmd, err
		}
		deviceMappings = append(deviceMappings, deviceMapping)
	}

	// collect all the environment variables for the container
	envVariables, err := readKVStrings(flEnvFile.GetAll(), flEnv.GetAll())
	if err != nil {
		return nil, nil, nil, cmd, err
	}

	// collect all the labels for the container
	labels, err := readKVStrings(flLabelsFile.GetAll(), flLabels.GetAll())

//.........这里部分代码省略.........
		}
	}

	var (
		runCmd     strslice.StrSlice
		entrypoint strslice.StrSlice
	)

	if len(copts.Args) > 0 {
		runCmd = strslice.StrSlice(copts.Args)
	}

	if copts.entrypoint != "" {
		entrypoint = strslice.StrSlice{copts.entrypoint}
	} else if flags.Changed("entrypoint") {
		// if `--entrypoint=` is parsed then Entrypoint is reset
		entrypoint = []string{""}
	}

	ports, portBindings, err := nat.ParsePortSpecs(copts.publish.GetAll())
	if err != nil {
		return nil, nil, nil, err
	}

	// Merge in exposed ports to the map of published ports
	for _, e := range copts.expose.GetAll() {
		if strings.Contains(e, ":") {
			return nil, nil, nil, fmt.Errorf("invalid port format for --expose: %s", e)
		}
		//support two formats for expose, original format <portnum>/[<proto>] or <startport-endport>/[<proto>]
		proto, port := nat.SplitProtoPort(e)
		//parse the start and end port and create a sequence of ports to expose
		//if expose a port, the start and end port are the same
		start, end, err := nat.ParsePortRange(port)
		if err != nil {
			return nil, nil, nil, fmt.Errorf("invalid range format for --expose: %s, error: %s", e, err)
		}
		for i := start; i <= end; i++ {
			p, err := nat.NewPort(proto, strconv.FormatUint(i, 10))
			if err != nil {
				return nil, nil, nil, err
			}
			if _, exists := ports[p]; !exists {
				ports[p] = struct{}{}
			}
		}
	}

	// parse device mappings
	deviceMappings := []container.DeviceMapping{}
	for _, device := range copts.devices.GetAll() {
		deviceMapping, err := ParseDevice(device)
		if err != nil {
			return nil, nil, nil, err
		}
		deviceMappings = append(deviceMappings, deviceMapping)
	}

	// collect all the environment variables for the container
	envVariables, err := readKVStrings(copts.envFile.GetAll(), copts.env.GetAll())
	if err != nil {
		return nil, nil, nil, err
	}

	// collect all the labels for the container
	labels, err := readKVStrings(copts.labelsFile.GetAll(), copts.labels.GetAll())