Yahoo!天気・災害の提供する各RSS情報のURLをいい感じにJSONにするやつ

README.md

How to use

bundle install --path=vendor/bundle

# If you need, download root server cert file
# curl -O http://curl.haxx.se/ca/cacert.pem

bundle exec ruby main.rb > yahoo_weather_rss_info.json

Gemfile

# frozen_string_literal: true

source "https://rubygems.org"

git_source(:github) {|repo_name| "https://github.com/#{repo_name}" }

gem 'irb'
gem 'nokogiri'

main.rb

require 'nokogiri'
require 'open-uri'
require 'json'

# If you need, set ssl cert file
# ENV['SSL_CERT_FILE']=  File.expand_path('./cacert.pem')

html = Nokogiri::HTML(open('https://weather.yahoo.co.jp/weather/rss/'))

BaseURL = 'https://rss-weather.yahoo.co.jp/rss/days/'
pattern = Regexp.new(BaseURL.gsub(/\//, '\/') + '(\d+).xml')

puts JSON.dump(
  html.xpath('//table[@class=\'yjw_table\']').map do |table|
    {
      :region_name => table.xpath('tr/td/h3')[0].text,
      :prefectures => table.xpath('tr')[1..].map do |tr|
        {
          :prefecture_name     => tr.xpath('td/h3')[0].text,
          :prefecture_url      => tr.xpath('td/h3')[0].xpath('a')[0]['href'],
          :prefecture_id       => tr.xpath('td/h3')[0].xpath('a')[0]['href'].gsub(pattern, '\1').to_i,
          :prefecture_warn_url => tr.xpath('td/a')[0]['href'],
          :locations           => tr.xpath('td/ul/li').map do |x|
            {
              :location_name => x.text,
              :location_url  => x.xpath('a')[0]['href'],
              :location_id   => x.xpath('a')[0]['href'].gsub(pattern, '\1').to_i
            }
          end
        }
      end
    }
  end
)