Module: Jekyll::ExtLinks

Defined in:
lib/jekyll-extlinks.rb

Instance Method Summary collapse

Instance Method Details

#config ⇒ Object

Access plugin config in _config.yml



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# File 'lib/jekyll-extlinks.rb', line 28

def config
  @context.registers[:site].config['extlinks']
end

#contains_any(str, fragments) ⇒ Object

Checks if str contains any fragment of the fragments array



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# File 'lib/jekyll-extlinks.rb', line 33

def contains_any(str, fragments)
  return false unless Regexp.union(fragments) =~ str
  true
end

#extlinks(content) ⇒ Object 



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# File 'lib/jekyll-extlinks.rb', line 38

def extlinks(content)
  # Process configured link attributes and whitelisted hosts
  if config
    if config['attributes']
      attributes = Array(config['attributes'])
    end
    if config['rel_exclude']
      rel_exclude = Array(config['rel_exclude'])
    end
  end
  # Stop if no attributes were specified
  return content unless attributes

  doc = Nokogiri::HTML.parse(content)
  # Stop if we could't parse with HTML
  return content unless doc

  doc.css('a').each do |a|
    # If this is a local link don't change it
    next unless a.get_attribute('href') =~ /\Ahttp/i

    attributes.each do |attr, value|
      if attr.downcase == 'rel'
        # If there's a rel already don't change it
        next unless !a.get_attribute('rel') || a.get_attribute('rel').empty?
        # Skip whitelisted hosts for the 'rel' attribute
        next if rel_exclude && contains_any(a.get_attribute('href'), rel_exclude)
      end
      a.set_attribute(attr, value)
    end
  end

  doc.to_s
end