Class: Gotenberg::Rails::HtmlPreprocessor

Inherits:
Object
  • Object
show all
Defined in:
lib/gotenberg/rails/html_preprocessor.rb

Constant Summary collapse

URL_ATTRIBUTES = 
%w[action href poster src].freeze
DATA_URL_ATTRIBUTES = 
{
  "object" => %w[data]
}.freeze
SRCSET_ATTRIBUTES = 
%w[srcset].freeze
SKIPPED_SCHEMES = 
%w[cid data javascript mailto tel].freeze
CSS_URL_PATTERN = 
/url\(\s*(['"]?)([^'")]+)\1\s*\)/i

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(html, display_url:) ⇒ HtmlPreprocessor

Returns a new instance of HtmlPreprocessor.



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# File 'lib/gotenberg/rails/html_preprocessor.rb', line 19

def initialize(html, display_url:)
  @html = html.to_s
  @display_url = display_url
end

Instance Attribute Details

#display_url ⇒ Object (readonly)

Returns the value of attribute display_url.



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# File 'lib/gotenberg/rails/html_preprocessor.rb', line 17

def display_url
  @display_url
end

#html ⇒ Object (readonly)

Returns the value of attribute html.



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# File 'lib/gotenberg/rails/html_preprocessor.rb', line 17

def html
  @html
end

Instance Method Details

#call ⇒ Object 



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# File 'lib/gotenberg/rails/html_preprocessor.rb', line 24

def call
  return html if display_url.nil? || display_url.to_s.empty?

  document = Nokogiri::HTML5(html)
  base_url = document.at_css("base[href]")&.[]("href") || display_url

  preprocess_url_attributes(document, base_url)
  preprocess_srcset_attributes(document, base_url)
  preprocess_css_urls(document, base_url)

  document.to_html
end