RubyKaigi のスポンサーを取得するスクリプト

run.rb

#!/usr/bin/env ruby
# frozen_string_literal: true

require 'nokogiri'
require 'open-uri'

Sponsor = Struct.new("Sponsor", :name, :url, :year)
RUBYKAIGI_URL = "http://rubykaigi.org/"

sponsors = []

def search_sponsors(doc, year)
  query = year < 2015 ? "#sponsors .name a" : ".sponsor__name a"
  doc.css(query).map { |el| Sponsor.new(el.text, el["href"], year) }
end

(2013..2017).reverse_each do |year|
  url = "#{RUBYKAIGI_URL}/#{year}/sponsors"
  puts "#{url}: Now scraping..."

  doc = Nokogiri::HTML(open(url))
  sponsors += search_sponsors(doc, year)
end

puts "Generate ranking"

ranking = sponsors.map do |sponsor|
  years = sponsors.select { |obj| obj.name == sponsor.name || obj.url == sponsor.url }.map(&:year)
  [sponsor, years.sort]
end.sort_by { |_, years| [years.size, years.join(", ")] }

puts "-" * 30

output = []
ranking.reverse_each do |sponsor, years|
  next if [sponsor.name, sponsor.url].any? { |x| output.include?(x) }
  puts "#{years.size}: #{sponsor.name} - #{sponsor.url} (#{years.join(", ")})"

  output += [sponsor.name, sponsor.url]
end