2015-09-25 12:07:36 +05:30
|
|
|
require 'gitlab/markdown'
|
2015-09-11 14:41:01 +05:30
|
|
|
require 'html/pipeline/filter'
|
|
|
|
|
|
|
|
module Gitlab
|
|
|
|
module Markdown
|
|
|
|
# HTML Filter to add a `rel="nofollow"` attribute to external links
|
|
|
|
#
|
|
|
|
class ExternalLinkFilter < HTML::Pipeline::Filter
|
|
|
|
def call
|
|
|
|
doc.search('a').each do |node|
|
|
|
|
next unless node.has_attribute?('href')
|
|
|
|
|
|
|
|
link = node.attribute('href').value
|
|
|
|
|
|
|
|
# Skip non-HTTP(S) links
|
|
|
|
next unless link.start_with?('http')
|
|
|
|
|
|
|
|
# Skip internal links
|
|
|
|
next if link.start_with?(internal_url)
|
|
|
|
|
|
|
|
node.set_attribute('rel', 'nofollow')
|
|
|
|
end
|
|
|
|
|
|
|
|
doc
|
|
|
|
end
|
|
|
|
|
|
|
|
private
|
|
|
|
|
|
|
|
def internal_url
|
|
|
|
@internal_url ||= Gitlab.config.gitlab.url
|
|
|
|
end
|
|
|
|
end
|
|
|
|
end
|
|
|
|
end
|