class YARD::CLI::Gems

def optparse(*args)
  opts = OptionParser.new
  opts.banner = 'Usage: yard gems [options] [gem_name [version]]'
  opts.separator ""
  opts.separator "#{description}. If no gem_name is given,"
  opts.separator "all gems are built."
  opts.separator ""
  opts.on('--rebuild', 'Rebuilds index') do
    @rebuild = true
  end
  common_options(opts)
  parse_options(opts, args)
  add_gems(args)
  if !args.empty? && @gems.empty?
    log.error "No specified gems could be found for command"
  elsif @gems.empty?
    @gems += YARD::GemIndex.all if @gems.empty?
  end
end