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46 lines
1.5 KiB
Ruby
46 lines
1.5 KiB
Ruby
# frozen_string_literal: true
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class HighlightJsController < ApplicationController
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skip_before_action :preload_json, :redirect_to_login_if_required, :check_xhr, :verify_authenticity_token, only: [:show]
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before_action :apply_cdn_headers, only: [:show]
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def show
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no_cookies
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RailsMultisite::ConnectionManagement.with_hostname(params[:hostname]) do
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current_version = HighlightJs.version(SiteSetting.highlighted_languages)
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if current_version != params[:version]
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return redirect_to path(HighlightJs.path)
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end
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# note, this can be slightly optimised by caching the bundled file, it cuts down on N reads
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# our nginx config caches this so in practical terms it does not really matter and keeps
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# code simpler
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languages = SiteSetting.highlighted_languages.split('|')
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# TODO: some languages require to be loaded before others
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# this limitation should be fixed in highlight js 11, remove it when available
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prepended_languages = ['csharp', 'c', 'c-like']
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prepended_languages.each do |lang|
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if languages.include?(lang)
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languages.insert(0, languages.delete(lang))
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else
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languages.insert(0, lang)
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end
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end
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highlight_js = HighlightJs.bundle(languages)
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response.headers["Last-Modified"] = 10.years.ago.httpdate
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response.headers["Content-Length"] = highlight_js.bytesize.to_s
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immutable_for 1.year
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render plain: highlight_js, disposition: nil, content_type: 'application/javascript'
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end
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end
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end
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