blob: cbcd547120d271ac5c888af3a8f9da0b277f93b5 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
|
# frozen_string_literal: true
require "nokogiri"
require "asciidoctor_plantuml/plantuml"
module Banzai
module Filter
# HTML that replaces all `lang plantuml` tags with PlantUML img tags.
#
class PlantumlFilter < HTML::Pipeline::Filter
def call
return doc unless settings.plantuml_enabled? && doc.at_xpath(lang_tag)
plantuml_setup
doc.xpath(lang_tag).each do |node|
img_tag = Nokogiri::HTML::DocumentFragment.parse(
Asciidoctor::PlantUml::Processor.plantuml_content(node.content, {})).css('img').first
unless img_tag.nil?
img_tag.set_attribute('data-diagram', 'plantuml')
img_tag.set_attribute('data-diagram-src', "data:text/plain;base64,#{Base64.strict_encode64(node.content)}")
node.parent.replace(img_tag)
end
end
doc
end
private
def lang_tag
@lang_tag ||= Gitlab::Utils::Nokogiri.css_to_xpath('pre[lang="plantuml"] > code').freeze
end
def settings
Gitlab::CurrentSettings.current_application_settings
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
|