Class: Govspeak::HtmlSanitizer

Inherits:
Object
  • Object
show all
Defined in:
lib/govspeak/html_sanitizer.rb

Defined Under Namespace

Classes: ImageSourceWhitelister, TableCellTextAlignWhitelister

Instance Method Summary collapse

Constructor Details

#initialize(dirty_html, options = {}) ⇒ HtmlSanitizer

Returns a new instance of HtmlSanitizer.



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# File 'lib/govspeak/html_sanitizer.rb', line 38

def initialize(dirty_html, options = {})
  @dirty_html = dirty_html
  @allowed_image_hosts = options[:allowed_image_hosts]
end

Instance Method Details

#sanitize ⇒ Object 



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# File 'lib/govspeak/html_sanitizer.rb', line 43

def sanitize
  transformers = [TableCellTextAlignWhitelister.new]
  if @allowed_image_hosts && @allowed_image_hosts.any?
    transformers << ImageSourceWhitelister.new(@allowed_image_hosts)
  end
  Sanitize.clean(@dirty_html, Sanitize::Config.merge(sanitize_config, transformers: transformers))
end

#sanitize_config ⇒ Object 



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# File 'lib/govspeak/html_sanitizer.rb', line 51

def sanitize_config
  Sanitize::Config.merge(
    Sanitize::Config::RELAXED,
    elements: Sanitize::Config::RELAXED[:elements] + %w[govspeak-embed-attachment govspeak-embed-attachment-link svg path],
    attributes: {
      :all => Sanitize::Config::RELAXED[:attributes][:all] + %w[role aria-label],
      "a"  => Sanitize::Config::RELAXED[:attributes]["a"] + [:data],
      "svg" => Sanitize::Config::RELAXED[:attributes][:all] + %w[xmlns width height viewbox focusable],
      "path" => Sanitize::Config::RELAXED[:attributes][:all] + %w[fill d],
      "div" => [:data],
      "th"  => Sanitize::Config::RELAXED[:attributes]["th"] + %w[style],
      "td"  => Sanitize::Config::RELAXED[:attributes]["td"] + %w[style],
      "govspeak-embed-attachment" => %w[content-id],
    },
  )
end