module DEBUGGER__

def self.parse_help
  helps = Hash.new{|h, k| h[k] = []}
  desc = cat = nil
  cmds = Hash.new
  File.read(File.join(__dir__, 'session.rb'), encoding: Encoding::UTF_8).each_line do |line|
    case line
    when /\A\s*### (.+)/
      cat = $1
      break if $1 == 'END'
    when /\A      register_command (.+)/
      next unless cat
      next unless desc
      ws = []
      $1.gsub(/'([a-z]+)'/){|w|
        ws << $1
      }
      helps[cat] << [ws, desc]
      desc = nil
      max_w = ws.max_by{|w| w.length}
      ws.each{|w|
        cmds[w] = max_w
      }
    when /\A\s+# (\s*\*.+)/
      if desc
        desc << "\n" + $1
      else
        desc = $1
      end
    end
  end
  @commands = cmds
  @helps = helps
end