core/commands2: Added 'commands' command

core/commands2/commands.go

+package commands
+
+import (
+	"fmt"
+	"strings"
+
+	cmds "github.com/jbenet/go-ipfs/commands"
+)
+
+type Command struct {
+	Name        string
+	Subcommands []Command
+}
+
+var commandsCmd = &cmds.Command{
+	Help: "TODO",
+	Run: func(res cmds.Response, req cmds.Request) {
+		root := outputCommand("ipfs", Root)
+		res.SetValue(&root)
+	},
+	Format: func(res cmds.Response) (string, error) {
+		v := res.Value().(*Command)
+		return formatCommand(v, 0), nil
+	},
+	Type: &Command{},
+}
+
+func outputCommand(name string, cmd *cmds.Command) Command {
+	output := Command{
+		Name:        name,
+		Subcommands: make([]Command, len(cmd.Subcommands)),
+	}
+
+	i := 0
+	for name, sub := range cmd.Subcommands {
+		output.Subcommands[i] = outputCommand(name, sub)
+		i++
+	}
+
+	return output
+}
+
+func formatCommand(cmd *Command, depth int) string {
+	var s string
+
+	if depth > 0 {
+		indent := strings.Repeat("    ", depth-1)
+		s = fmt.Sprintf("%s%s\n", indent, cmd.Name)
+	}
+
+	for _, sub := range cmd.Subcommands {
+		s += formatCommand(&sub, depth+1)
+	}
+
+	return s
+}

core/commands2/root.go

@@ -110,4 +110,5 @@ Use "ipfs help <command>" for more information about a command.
 
 func init() {
 	Root.Subcommands["daemon"] = daemonCmd
+	Root.Subcommands["commands"] = commandsCmd
 }