1package commands
 2
 3import (
 4	"fmt"
 5	"sort"
 6
 7	"github.com/spf13/cobra"
 8)
 9
10var (
11	commandsDesc bool
12)
13
14type commandSorterByName []*cobra.Command
15
16func (c commandSorterByName) Len() int           { return len(c) }
17func (c commandSorterByName) Swap(i, j int)      { c[i], c[j] = c[j], c[i] }
18func (c commandSorterByName) Less(i, j int) bool { return c[i].CommandPath() < c[j].CommandPath() }
19
20func runCommands(cmd *cobra.Command, args []string) error {
21	first := true
22
23	var allCmds []*cobra.Command
24	queue := []*cobra.Command{RootCmd}
25
26	for len(queue) > 0 {
27		cmd := queue[0]
28		queue = queue[1:]
29		allCmds = append(allCmds, cmd)
30		for _, c := range cmd.Commands() {
31			queue = append(queue, c)
32		}
33	}
34
35	sort.Sort(commandSorterByName(allCmds))
36
37	for _, cmd := range allCmds {
38		if !first {
39			fmt.Println()
40		}
41
42		first = false
43
44		if commandsDesc {
45			fmt.Printf("# %s\n", cmd.Short)
46		}
47
48		fmt.Print(cmd.UseLine())
49
50		if commandsDesc {
51			fmt.Println()
52		}
53	}
54
55	if !commandsDesc {
56		fmt.Println()
57	}
58
59	return nil
60}
61
62var commandsCmd = &cobra.Command{
63	Use:   "commands [<option>...]",
64	Short: "Display available commands.",
65	RunE:  runCommands,
66}
67
68func init() {
69	RootCmd.AddCommand(commandsCmd)
70
71	commandsCmd.Flags().SortFlags = false
72
73	commandsCmd.Flags().BoolVarP(&commandsDesc, "pretty", "p", false,
74		"Output the command description as well as Markdown compatible comment",
75	)
76}