def image_uri(target_image, asset_dir_key = 'imagesdir')
if (doc = @document).safe < SafeMode::SECURE && doc.attr?('data-uri')
if (Helpers.uriish? target_image) ||
(asset_dir_key && (images_base = doc.attr(asset_dir_key)) && (Helpers.uriish? images_base) &&
(target_image = normalize_web_path(target_image, images_base, false)))
if doc.attr?('allow-uri-read')
generate_data_uri_from_uri target_image, doc.attr?('cache-uri')
else
target_image
end
else
generate_data_uri target_image, asset_dir_key
end
else
normalize_web_path target_image, (asset_dir_key ? doc.attr(asset_dir_key) : nil)
end
end