euc-jp -> utf-8

nkf.rb

require 'json'

list = Dir.glob('wiki/*.txt').map do |path|
  title = `echo #{path} | xxd -r -p | nkf -E -w`
  body = `cat #{path} | nkf -E -w`

  {
    title: title,
    body: body
  }
end

puts JSON.pretty_generate(list)

require 'elasticsearch'
require 'json'

client = Elasticsearch::Client.new(url: 'http://sharp:9200')

body = JSON.parse(File.open('pages.json').read).flat_map do |data|
  [
    { index: {} },
    data
  ]
end

client.bulk(index: 'wiki', type: 'page', body: body)