Get help for command at any nesting

get_help.rb

@@ -1,5 +1,39 @@
 require "vagrant"
 
+def command_options_for(name)
+  plugin = Vagrant::Plugin::V2::Plugin.manager.commands[name.to_sym].to_a.first
+  if !plugin
+    raise "Failed to locate command plugin for: #{name}"
+  end
+
+  # Create a new anonymous class based on the command class
+  # so we can modify the setup behavior
+  klass = Class.new(plugin.call)
+
+  # Update the option parsing to store the provided options, and then return
+  # a nil value. The nil return will force the command to call help and not
+  # actually execute anything.
+  klass.class_eval do
+    def parse_options(opts)
+      Thread.current.thread_variable_set(:command_options, opts)
+      nil
+    end
+  end
+
+  env = Vagrant::Environment.new()
+  # Execute the command to populate our options
+  klass.new([], env).execute
+
+  options = Thread.current.thread_variable_get(:command_options)
+
+  # Clean our option data out of the thread
+  Thread.current.thread_variable_set(:command_options, nil)
+
+  # Send the options back
+  options
+end
+
+
 def command_help_for(name, subcommand)
   plugin = Vagrant::Plugin::V2::Plugin.manager.commands[name.to_sym].to_a.first
   if !plugin
@@ -50,14 +84,95 @@ def command_help_for(name, subcommand)
   end
 end
 
+def other_command_options_for(name, subcommands=[])
+  plugin = Vagrant::Plugin::V2::Plugin.manager.commands[name.to_sym].to_a.first
+  if !plugin
+    raise "Failed to locate command plugin for: #{name}"
+  end
+
+  # Create a new anonymous class based on the command class
+  # so we can modify the setup behavior
+  klass = Class.new(plugin.call)
+
+  klass.class_eval do
+    def subcommands
+      @subcommands
+    end
+
+    def parse_options(opts)
+      Thread.current.thread_variable_set(:command_options, opts)
+      nil
+    end
+  end
+
+  Vagrant::UI::Silent.class_eval do
+    def info(message, *opts)
+      Thread.current.thread_variable_set(:command_info, message)
+      nil
+    end
+  end
+
+  env = Vagrant::Environment.new()
+  # Execute the command to populate our options
+  root_cmd_cls = klass.new([], env)
+
+  subcommands.each do |cmd|
+    subcommand_klass = Class.new(root_cmd_cls.subcommands[cmd.to_sym])
+    subcommand_klass.class_eval do
+      def subcommands
+        @subcommands
+      end
+  
+      def parse_options(opts)
+        Thread.current.thread_variable_set(:command_options, opts)
+        nil
+      end
+    end
+    # Execute the command to populate our options
+    root_cmd_cls = subcommand_klass.new([], env)
+  end
+
+  begin
+    root_cmd_cls.execute
+  rescue Vagrant::Errors::CLIInvalidUsage
+    # This is expected since no args are being provided
+  end
+
+  options = Thread.current.thread_variable_get(:command_options)
+  msg = Thread.current.thread_variable_get(:command_info)
+
+  # require "pry-byebug"; binding.pry
+  # Clean our option data out of the thread
+  Thread.current.thread_variable_set(:command_options, nil)
+  Thread.current.thread_variable_set(:command_info, nil)
+
+  if !options.nil?
+    return options
+  elsif !msg.nil?
+    return msg
+  end
+end
+
 puts "getting help for status"
 hlp = command_help_for("status", [])
 puts hlp
 
 puts "\ngetting help for box"
-hlp = command_help_for("box", [])
+hlp = other_command_options_for("box", [])
 puts hlp
 
-# puts "\ngetting help for box add"
-# hlp = command_help_for("box", ["add"])
-# puts hlp
+puts "\ngetting help for box add"
+hlp = other_command_options_for("box", ["add"])
+puts hlp
+
+puts "\ngetting help for cloud"
+hlp = other_command_options_for("cloud", [])
+puts hlp
+
+puts "\ngetting help for cloud auth"
+hlp = other_command_options_for("cloud", ["auth"])
+puts hlp
+
+puts "\ngetting help for cloud auth login"
+hlp = other_command_options_for("cloud", ["auth", "login"])
+puts hlp