module Docs  class Crystal < UrlScraper    self.type = 'crystal'    self.base_url = 'https://crystal-lang.org/'    self.initial_paths = %w(reference/index.html)    self.links = {      home: 'https://crystal-lang.org/',      code: 'https://github.com/crystal-lang/crystal'    }     html_filters.push 'crystal/entries', 'crystal/clean_html'     options[:attribution] = ->(filter) {      if filter.slug.start_with?('reference')        <<-HTML          To the extent possible under law, the persons who contributed to this work          have waived<br>all copyright and related or neighboring rights to this work          by associating CC0 with it.        HTML      else        <<-HTML          &copy; 2012&ndash;2021 Manas Technology Solutions.<br>          Licensed under the Apache License, Version 2.0.        HTML      end    }     self.release = '1.1.1'    self.root_path = "api/#{release}/index.html"     options[:only_patterns] = [/\Aapi\/#{release}\//, /\Areference\//]    options[:skip_patterns] = [/debug/i]     options[:replace_paths] = {      "api/#{release}/" => "api/#{release}/index.html",      'reference/' => 'reference/index.html'    }     def get_latest_version(opts)      doc = fetch_doc('https://crystal-lang.org/', opts)      doc.at_css('.latest-release').content.scan(/([0-9.]+)/)[0][0]    end  endend