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# frozen_string_literal: true
class FaviconCheck < ::HTMLProofer::Check
def run
found = false
@html.xpath('//link[not(ancestor::pre or ancestor::code)]').each do |node|
favicon = create_element(node)
next if favicon.ignore?
found = true if favicon.rel.split.last.eql? 'icon'
break if found
end
return if found
return if immediate_redirect?
add_issue('no favicon specified')
end
private
# allow any instant-redirect meta tag
def immediate_redirect?
@html.xpath("//meta[@http-equiv='refresh']").attribute('content').value.start_with? '0;'
rescue StandardError
false
end
end
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