Import to Day One app from idonethis csv export

idonethis_import.rb

require 'cgi'
require 'csv'
require 'open3'

def readfile(file)
  data = {}

  CSV.foreach(file) do |row|
    date = row[0]
    text = row[1]

    data[date] = [] unless data.has_key?(date)
    data[date] << CGI.unescapeHTML(text)
  end

  data.each do |date, text_array|
    text = text_array.map { |value| '* ' + value }.join("\n")

    puts date
    puts text

    Open3.popen3('dayone', "-d=\"#{date}\"", 'new') do |stdin, stdout, stderr|
      stdin.write(text)
      stdin.close_write
      puts stdout.read
    end

    puts "-------------------------------------------------------------"
  end
end

readfile(ARGV[0])