module Docs  class Crystal < UrlScraper    include MultipleBaseUrls    self.type = 'crystal'    self.release = '1.17.0'    self.base_urls = [      "https://crystal-lang.org/api/#{release}/",      "https://crystal-lang.org/reference/#{release[0..2]}/",    ]    def initial_urls      [ "https://crystal-lang.org/api/#{self.class.release}/index.html",        "https://crystal-lang.org/reference/#{self.class.release[0..2]}/index.html" ]    end     self.links = {      home: 'https://crystal-lang.org/',      code: 'https://github.com/crystal-lang/crystal'    }     html_filters.push 'crystal/entries', 'crystal/clean_html'     options[:skip_patterns] = [      %r{\ALibLLVM\.html\z},      %r{\ACrystal/System(/|\.html\z)},      %r{\ACrystal/PointerPairingHeap/},      %r{\AFiber/ExecutionContext/Scheduler.html\z},      %r{\AIO/Evented.html\z},      %r{\ARegex/PCRE2.html\z}    ]     options[:attribution] = ->(filter) {      if filter.current_url.path.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;2025 Manas Technology Solutions.<br>          Licensed under the Apache License, Version 2.0.        HTML      end    }     def get_latest_version(opts)      doc = fetch_doc('https://crystal-lang.org/', opts)      doc.at_css('.latest-release-info > a > strong').content.scan(/([0-9.]+)/)[0][0]    end  endend