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-rw-r--r--activesupport/lib/active_support/xml_mini/jdom.rb6
1 files changed, 4 insertions, 2 deletions
diff --git a/activesupport/lib/active_support/xml_mini/jdom.rb b/activesupport/lib/active_support/xml_mini/jdom.rb
index a7939b3185..7f94a64016 100644
--- a/activesupport/lib/active_support/xml_mini/jdom.rb
+++ b/activesupport/lib/active_support/xml_mini/jdom.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
raise "JRuby is required to use the JDOM backend for XmlMini" unless RUBY_PLATFORM.include?("java")
require "jruby"
@@ -38,7 +40,7 @@ module ActiveSupport
else
@dbf = DocumentBuilderFactory.new_instance
# secure processing of java xml
- # http://www.ibm.com/developerworks/xml/library/x-tipcfsx/index.html
+ # https://archive.is/9xcQQ
@dbf.setFeature("http://apache.org/xml/features/nonvalidating/load-external-dtd", false)
@dbf.setFeature("http://xml.org/sax/features/external-general-entities", false)
@dbf.setFeature("http://xml.org/sax/features/external-parameter-entities", false)
@@ -167,7 +169,7 @@ module ActiveSupport
# element::
# XML element to be checked.
def empty_content?(element)
- text = ""
+ text = "".dup
child_nodes = element.child_nodes
(0...child_nodes.length).each do |i|
item = child_nodes.item(i)