Class: Banzai::Filter::InlineDiffFilter

Inherits:
HTML::Pipeline::Filter
  • Object
show all
Defined in:
lib/banzai/filter/inline_diff_filter.rb

Constant Summary collapse

IGNORED_ANCESTOR_TAGS = 
%w(pre code tt).to_set

Instance Method Summary collapse

Instance Method Details

#call ⇒ Object 


9
10
11
12
13
14
15
16
17
18
19
20
21
 
# File 'lib/banzai/filter/inline_diff_filter.rb', line 9

def call
  doc.xpath('descendant-or-self::text()').each do |node|
    next if has_ancestor?(node, IGNORED_ANCESTOR_TAGS)

    content = node.to_html
    html_content = inline_diff_filter(content)

    next if content == html_content

    node.replace(html_content)
  end
  doc
end

#inline_diff_filter(text) ⇒ Object 


23
24
25
26
 
# File 'lib/banzai/filter/inline_diff_filter.rb', line 23

def inline_diff_filter(text)
  html_content = text.gsub(/(?:\[\-(.*?)\-\]|\{\-(.*?)\-\})/, '<span class="idiff left right deletion">\1\2</span>')
  html_content.gsub(/(?:\[\+(.*?)\+\]|\{\+(.*?)\+\})/, '<span class="idiff left right addition">\1\2</span>')
end