51 lines
1.3 KiB
Ruby
51 lines
1.3 KiB
Ruby
# frozen_string_literal: true
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require "nokogiri"
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require "asciidoctor_plantuml/plantuml"
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module Banzai
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module Filter
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# HTML that replaces all `lang plantuml` tags with PlantUML img tags.
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#
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class PlantumlFilter < HTML::Pipeline::Filter
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def call
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return doc unless settings.plantuml_enabled? && doc.at_xpath(lang_tag)
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plantuml_setup
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doc.xpath(lang_tag).each do |node|
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img_tag = Nokogiri::HTML::DocumentFragment.parse(
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Asciidoctor::PlantUml::Processor.plantuml_content(node.content, {}))
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node.parent.replace(img_tag)
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end
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doc
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end
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private
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def lang_tag
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@lang_tag ||=
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if Feature.enabled?(:use_cmark_renderer, default_enabled: :yaml)
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Gitlab::Utils::Nokogiri.css_to_xpath('pre[lang="plantuml"] > code').freeze
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else
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Gitlab::Utils::Nokogiri.css_to_xpath('pre > code[lang="plantuml"]').freeze
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end
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end
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def settings
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Gitlab::CurrentSettings.current_application_settings
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end
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def plantuml_setup
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Asciidoctor::PlantUml.configure do |conf|
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conf.url = settings.plantuml_url
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conf.png_enable = settings.plantuml_enabled
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conf.svg_enable = false
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conf.txt_enable = false
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end
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end
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end
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end
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end
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