Module: Troy::Markdown::Rouge

Includes:
Rouge::Plugins::Redcarpet
Included in:
Renderer
Defined in:
lib/troy/markdown.rb

Overview

Create a new Redcarpet renderer, that prepares the code block to use rouge syntax.

Instance Method Summary collapse

Instance Method Details

#header(text, level) ⇒ Object

[View source]

24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
 
# File 'lib/troy/markdown.rb', line 24

def header(text, level)
  matches = text.strip.match(HEADING_ID)
  title = matches[:text].strip
  html = Nokogiri::HTML.fragment("<h#{level}>#{title}</h#{level}>")
  heading = html.first_element_child
  title = heading.text

  id = matches[:id]
  id ||= permalink(title)

  heading_counter[id] += 1
  id = "#{id}-#{heading_counter[id]}" if heading_counter[id] > 1

  heading.add_child %[<a class="anchor" href="##{id}" aria-hidden="true" tabindex="-1"></a>] # rubocop:disable Style/LineLength
  heading.set_attribute :tabindex, "-1"
  heading.set_attribute(:id, id)

  heading.to_s
end

#heading_counter ⇒ Object

[View source]

54
55
56
 
# File 'lib/troy/markdown.rb', line 54

def heading_counter
  @heading_counter ||= Hash.new {|h, k| h[k] = 0}
end

#permalink(text) ⇒ Object

[View source]

44
45
46
47
48
49
50
51
52
 
# File 'lib/troy/markdown.rb', line 44

def permalink(text)
  str = text.dup.unicode_normalize(:nfkd)
  str = str.gsub(/[^\x00-\x7F]/, "").to_s
  str.gsub!(/[^-\w]+/xim, "-")
  str.gsub!(/-+/xm, "-")
  str.gsub!(/^-?(.*?)-?$/, '\1')
  str.downcase!
  str
end