複数のはてなダイアリのデータをマージするスクリプト

gistfile1.rb

# encoding: utf-8

require 'rubygems'
require 'nokogiri'

hash = Hash.new
names = [ "account1", "account2" ]

names.each do |name|
  doc = Nokogiri::XML(File.open("#{name}.xml"))
  doc.xpath("diary/day").each do |e|
    date = e.attribute("date").text
    title = e.attribute("title").text
    text = e.text
    if hash.key?(date)
      puts "merge: #{date}"
      hash[date][:text] << text
    else
      hash[date] = { :text => text, :title => title }
    end
  end
end

xml = Nokogiri::XML::Builder.new do |xml|
  xml.diary do |diary|
    hash.sort { |(k1, v1), (k2, v2)| k1 <=> k2 }.each do |date, h|
      diary.day(:date => date, :title => h[:title]) do |day|
        puts "#{date}: #{h[:title]}"
        day.body(h[:text])
      end
    end
  end
end

File.open("merged.xml", "w") do |f|
  f.puts Nokogiri::XML(xml.to_xml, nil, 'utf-8').to_xml
end