Golang Command.HasParent方法代码示例

// Namespace enables namespacing for a sub-commmand and its immediated children. It returns an error if the command does not have a parent.
func (n *CobraNamespace) Namespace(cmd *cobra.Command) error {
	if !cmd.HasParent() {
		return errors.New("cmdns: command requires a parent")
	}

	// Do not bind if there are not available sub commands
	if !cmd.HasAvailableSubCommands() {
		return nil
	}

	if n.OverrideUsageFunc {
		cmd.SetUsageFunc(n.UsageFunc())
	}

	for _, c := range cmd.Commands() {
		if !c.IsAvailableCommand() {
			continue
		}
		// copy the command add it to the root command with a prefix of its parent.
		nc := *c
		nc.Use = cmd.Name() + DefaultNamespaceSeparator + c.Use

		// add this command to the root and hide it so it does not show in available commands list
		c.Parent().Parent().AddCommand(&nc)
		c.Hidden = true
		n.commands = append(n.commands, &nc)
	}
	n.cmd = cmd
	return nil
}

func (t *templater) rootCmd(c *cobra.Command) *cobra.Command {
	if c != nil && !c.HasParent() {
		return c
	}
	if t.RootCmd == nil {
		panic("nil root cmd")
	}
	return t.RootCmd
}

func GenMarkdownCustom(cmd *cobra.Command, out io.Writer, linkHandler func(string) string) {
	name := cmd.CommandPath()

	short := cmd.Short
	long := cmd.Long
	if len(long) == 0 {
		long = short
	}

	fmt.Fprintf(out, "## %s\n\n", name)
	fmt.Fprintf(out, "%s\n\n", short)
	fmt.Fprintf(out, "### Synopsis\n\n")
	fmt.Fprintf(out, "\n%s\n\n", long)

	if cmd.Runnable() {
		fmt.Fprintf(out, "```\n%s\n```\n\n", cmd.UseLine())
	}

	if len(cmd.Example) > 0 {
		fmt.Fprintf(out, "### Examples\n\n")
		fmt.Fprintf(out, "```\n%s\n```\n\n", cmd.Example)
	}

	printOptions(out, cmd, name)
	if hasSeeAlso(cmd) {
		fmt.Fprintf(out, "### SEE ALSO\n")
		if cmd.HasParent() {
			parent := cmd.Parent()
			pname := parent.CommandPath()
			link := pname + ".md"
			link = strings.Replace(link, " ", "_", -1)
			fmt.Fprintf(out, "* [%s](%s)\t - %s\n", pname, linkHandler(link), parent.Short)
			cmd.VisitParents(func(c *cobra.Command) {
				if c.DisableAutoGenTag {
					cmd.DisableAutoGenTag = c.DisableAutoGenTag
				}
			})
		}

		children := cmd.Commands()
		sort.Sort(byName(children))

		for _, child := range children {
			if !child.IsAvailableCommand() || child.IsHelpCommand() {
				continue
			}
			cname := name + " " + child.Name()
			link := cname + ".md"
			link = strings.Replace(link, " ", "_", -1)
			fmt.Fprintf(out, "* [%s](%s)\t - %s\n", cname, linkHandler(link), child.Short)
		}
		fmt.Fprintf(out, "\n")
	}
	if !cmd.DisableAutoGenTag {
		fmt.Fprintf(out, "###### Auto generated by spf13/cobra on %s\n", time.Now().Format("2-Jan-2006"))
	}
}

func findChildOfRootCommand(command *cobra.Command) (*cobra.Command, bool) {
	for command.HasParent() {
		if !command.Parent().HasParent() {
			return command, true
		}

		command = command.Parent()
	}

	return nil, false
}

// Test to see if we have a reason to print See Also information in docs
// Basically this is a test for a parent commend or a subcommand which is
// both not deprecated and not the autogenerated help command.
func hasSeeAlso(cmd *cobra.Command) bool {
	if cmd.HasParent() {
		return true
	}
	for _, c := range cmd.Commands() {
		if !c.IsAvailableCommand() || c.IsHelpCommand() {
			continue
		}
		return true
	}
	return false
}

func (c *CLI) globalFlags(cmd *cobra.Command) *flag.FlagSet {
	fs := &flag.FlagSet{}
	if cmd.HasParent() {
		fs.AddFlagSet(cmd.InheritedFlags())
		if fs.Lookup("help") == nil && cmd.Flag("help") != nil {
			fs.AddFlag(cmd.Flag("help"))
		}
	} else {
		fs.AddFlagSet(cmd.PersistentFlags())
	}
	return c.sansDriverFlags(c.sansAdditionalFlags(fs))
}

func genMan(cmd *cobra.Command, header *GenManHeader) []byte {
	// something like `rootcmd subcmd1 subcmd2`
	commandName := cmd.CommandPath()
	// something like `rootcmd-subcmd1-subcmd2`
	dashCommandName := strings.Replace(commandName, " ", "-", -1)

	fillHeader(header, commandName)

	buf := new(bytes.Buffer)

	short := cmd.Short
	long := cmd.Long
	if len(long) == 0 {
		long = short
	}

	manPreamble(buf, header, commandName, short, long)
	manPrintOptions(buf, cmd)
	if len(cmd.Example) > 0 {
		fmt.Fprintf(buf, "# EXAMPLE\n")
		fmt.Fprintf(buf, "```\n%s\n```\n", cmd.Example)
	}
	if hasSeeAlso(cmd) {
		fmt.Fprintf(buf, "# SEE ALSO\n")
		seealsos := make([]string, 0)
		if cmd.HasParent() {
			parentPath := cmd.Parent().CommandPath()
			dashParentPath := strings.Replace(parentPath, " ", "-", -1)
			seealso := fmt.Sprintf("**%s(%s)**", dashParentPath, header.Section)
			seealsos = append(seealsos, seealso)
			cmd.VisitParents(func(c *cobra.Command) {
				if c.DisableAutoGenTag {
					cmd.DisableAutoGenTag = c.DisableAutoGenTag
				}
			})
		}
		children := cmd.Commands()
		sort.Sort(byName(children))
		for _, c := range children {
			if !c.IsAvailableCommand() || c.IsHelpCommand() {
				continue
			}
			seealso := fmt.Sprintf("**%s-%s(%s)**", dashCommandName, c.Name(), header.Section)
			seealsos = append(seealsos, seealso)
		}
		fmt.Fprintf(buf, "%s\n", strings.Join(seealsos, ", "))
	}
	if !cmd.DisableAutoGenTag {
		fmt.Fprintf(buf, "# HISTORY\n%s Auto generated by spf13/cobra\n", header.Date.Format("2-Jan-2006"))
	}
	return buf.Bytes()
}

func commands(cmd *cobra.Command) []*cobra.Command {
	if cmd.HasParent() {
		return cmd.Commands()
	}

	cArr := []*cobra.Command{}
	for _, c := range cmd.Commands() {
		if m, _ := rx.MatchString("((re)?start)|stop|status|((un)?install)", c.Name()); !m {
			cArr = append(cArr, c)
		}
	}
	return cArr
}

func localFlags(cmd *cobra.Command) *flag.FlagSet {

	fs := &flag.FlagSet{}

	if cmd.HasParent() {
		cmd.LocalFlags().VisitAll(func(f *flag.Flag) {
			if f.Name != "help" {
				fs.AddFlag(f)
			}
		})
	} else {
		cmd.LocalFlags().VisitAll(func(f *flag.Flag) {
			if cmd.PersistentFlags().Lookup(f.Name) == nil {
				fs.AddFlag(f)
			}
		})
	}

	return sansAdditionalFlags(fs)
}

func GenerateSingle(cmd *cobra.Command, out *bytes.Buffer, linkHandler func(string) string, specs []string, render_dir string) {
	name := cmd.CommandPath()

	short := cmd.Short
	long := cmd.Long
	if len(long) == 0 {
		long = short
	}

	fmt.Fprintf(out, "# %s\n\n", name)
	fmt.Fprintf(out, "%s\n\n", short)
	fmt.Fprintf(out, "## Synopsis\n")
	fmt.Fprintf(out, "\n%s\n\n", long)

	if cmd.Runnable() {
		fmt.Fprintf(out, "```bash\n%s\n```\n\n", cmd.UseLine())
	}

	if len(cmd.Example) > 0 {
		fmt.Fprintf(out, "## Examples\n\n")
		fmt.Fprintf(out, "```bash\n%s\n```\n\n", cmd.Example)
	}

	flags := cmd.NonInheritedFlags()
	flags.SetOutput(out)
	if flags.HasFlags() {
		fmt.Fprintf(out, "## Options\n\n```\n")
		flags.PrintDefaults()
		fmt.Fprintf(out, "```\n\n")
	}

	parentFlags := cmd.InheritedFlags()
	parentFlags.SetOutput(out)
	if parentFlags.HasFlags() {
		fmt.Fprintf(out, "## Options inherited from parent commands\n\n```\n")
		parentFlags.PrintDefaults()
		fmt.Fprintf(out, "```\n\n")
	}

	if len(cmd.Commands()) > 0 {
		fmt.Fprintf(out, "## Subcommands\n\n")
		children := cmd.Commands()
		sort.Sort(byName(children))

		for _, child := range children {
			if len(child.Deprecated) > 0 {
				continue
			}
			cname := name + " " + child.Name()
			link := cname + ".md"
			link = strings.Replace(link, " ", "_", -1)
			fmt.Fprintf(out, "* [%s](%s)\t - %s\n", cname, linkHandler(link), child.Short)
		}
	}

	if len(cmd.Commands()) > 0 && cmd.HasParent() {
		fmt.Fprintf(out, "\n")
	}

	if cmd.HasParent() {
		fmt.Fprintf(out, "## See Also\n\n")
		parent := cmd.Parent()
		pname := parent.CommandPath()
		link := pname + ".md"
		link = strings.Replace(link, " ", "_", -1)
		fmt.Fprintf(out, "* [%s](%s)\t - %s\n", pname, linkHandler(link), parent.Short)
	}

	fmt.Fprintf(out, "\n## Specifications\n\n")
	for _, spec := range specs {
		spec = strings.Replace(spec, render_dir, "", 1)
		title := strings.Replace(spec, "_", " ", -1)
		title = strings.Replace(title, ".md", "", 1)
		// title = strings.Replace(title, "spec", "specification", 1)
		title = strings.Title(title)
		fmt.Fprintf(out, "* [%s](%s)\n", title, linkHandler(spec))
	}

	fmt.Fprintf(out, "\n")
}