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require "nokogiri"
require "asciidoctor-plantuml/plantuml"
module Banzai
module Filter
# HTML that replaces all `code plantuml` tags with PlantUML img tags.
#
class PlantumlFilter < HTML::Pipeline::Filter
def call
return doc unless doc.at('pre.plantuml') && settings.plantuml_enabled
plantuml_setup
doc.css('pre.plantuml').each do |el|
img_tag = Nokogiri::HTML::DocumentFragment.parse(
Asciidoctor::PlantUml::Processor.plantuml_content(el.content, {}))
el.replace img_tag
end
doc
end
private
def settings
ApplicationSetting.current || ApplicationSetting.create_from_defaults
end
def plantuml_setup
Asciidoctor::PlantUml.configure do |conf|
conf.url = settings.plantuml_url
conf.png_enable = settings.plantuml_enabled
conf.svg_enable = false
conf.txt_enable = false
end
end
end
end
end
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