50 lines
1.3 KiB
Ruby
50 lines
1.3 KiB
Ruby
# frozen_string_literal: true
|
|
|
|
require 'uri'
|
|
|
|
module Banzai
|
|
module Filter
|
|
class BaseRelativeLinkFilter < HTML::Pipeline::Filter
|
|
include Gitlab::Utils::StrongMemoize
|
|
|
|
CSS = 'a:not(.gfm), img:not(.gfm), video:not(.gfm), audio:not(.gfm)'
|
|
XPATH = Gitlab::Utils::Nokogiri.css_to_xpath(CSS).freeze
|
|
|
|
protected
|
|
|
|
def linkable_attributes
|
|
# Nokorigi Nodeset#search performs badly for documents with many nodes
|
|
#
|
|
# Here we store fetched attributes in the shared variable "result"
|
|
# This variable is passed through the chain of filters and can be
|
|
# accessed by them
|
|
result[:linkable_attributes] ||= fetch_linkable_attributes
|
|
end
|
|
|
|
def relative_url_root
|
|
Gitlab.config.gitlab.relative_url_root.presence || '/'
|
|
end
|
|
|
|
def project
|
|
context[:project]
|
|
end
|
|
|
|
private
|
|
|
|
def unescape_and_scrub_uri(uri)
|
|
Addressable::URI.unescape(uri).scrub.delete("\0")
|
|
end
|
|
|
|
def fetch_linkable_attributes
|
|
attrs = []
|
|
|
|
attrs += doc.xpath(XPATH).flat_map do |el|
|
|
[el.attribute('href'), el.attribute('src'), el.attribute('data-src')]
|
|
end
|
|
|
|
attrs.reject { |attr| attr.blank? || attr.value.start_with?('//') }
|
|
end
|
|
end
|
|
end
|
|
end
|