54 lines
1.3 KiB
Ruby
54 lines
1.3 KiB
Ruby
# frozen_string_literal: true
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module HighlightJs
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HIGHLIGHTJS_DIR ||=
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"#{Rails.root}/app/assets/javascripts/discourse/node_modules/@highlightjs/cdn-assets/"
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VERSION ||= 1 # bump to invalidate caches following core changes
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def self.languages
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langs = Dir.glob(HIGHLIGHTJS_DIR + "languages/*.js").map { |path| File.basename(path)[0..-8] }
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langs.sort
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end
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def self.bundle(langs)
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lang_js =
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langs.filter_map do |lang|
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File.read(HIGHLIGHTJS_DIR + "languages/#{lang}.min.js")
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rescue Errno::ENOENT
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# no file, don't care
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end
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<<~JS
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export default function registerLanguages(hljs) {
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#{lang_js.join("\n")}
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}
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JS
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end
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def self.cache
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@lang_string_cache ||= {}
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end
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def self.version(lang_string)
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cache_info = cache[RailsMultisite::ConnectionManagement.current_db]
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return cache_info[:digest] if cache_info&.[](:lang_string) == lang_string
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cache_info = {
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lang_string: lang_string,
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digest:
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Digest::SHA1.hexdigest(
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bundle(lang_string.split("|")) + "|#{VERSION}|#{GlobalSetting.asset_url_salt}",
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),
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}
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cache[RailsMultisite::ConnectionManagement.current_db] = cache_info
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cache_info[:digest]
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end
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def self.path
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"/highlight-js/#{Discourse.current_hostname}/#{version SiteSetting.highlighted_languages}.js"
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end
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end
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