ginko_meshi.rb

# encoding: utf-8

require 'date'

@dic = {'朝' => 'first', '昼' => 'second', '夜' => 'third'}

def meshi(str)

  today = Date.today

  @dic.each{ |key, value|
    next unless str.include?("@hogehoge #{key}")
    
    message = "(./#{value}.txt)"

    if str.include?('明')
      if today.day == Date.new(today.year, today.month, -1).day
        message += "今日は月末です"
      else
        message += "#{today.day + 1}日 の献立を表示"
      end
    else
      message += "#{today.day}日 の献立を表示"
    end

    return message
  }

  return ""
end

puts meshi('@hogehoge 朝 今日')
puts meshi('@hogehoge 昼　今日')
puts meshi('@hogehoge 夜　明日')