问对于如何将RFC822电子邮件格式化为JSON有什么建议吗？

EN

require 'json'

module Mail
  class Message
    def to_json(opts = {})
      hash = {}
      hash['headers'] = {}
      header.fields.each do |field|
        hash['headers'][field.name] = field.value
      end
      hash['delivery_handler'] = delivery_handler.to_s if delivery_handler
      hash['transport_encoding'] = transport_encoding.to_s
      special_variables = [:@header, :@delivery_handler, :@transport_encoding]
      (instance_variables.map(&:to_sym) - special_variables).each do |var|
        hash[var.to_s] = instance_variable_get(var)
      end
      hash.to_json(opts)
    end        
  end
end   

 {
       headers: [
          { name: value },
          { name2: value}
       ],
       body: [
           { 
               mime: type,
               content: stuff
           },
           {
           },
           .
           .
           .
           {
           }
       ]
    }