Method: ERB::Util.xml_name_escape

Defined in:
activesupport/lib/active_support/core_ext/erb/util.rb

.xml_name_escape(name) ⇒ Object

A utility method for escaping XML names of tags and names of attributes.

xml_name_escape('1 < 2 & 3')
# => "1___2___3"

It follows the requirements of the specification: www.w3.org/TR/REC-xml/#NT-Name



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# File 'activesupport/lib/active_support/core_ext/erb/util.rb', line 142

def xml_name_escape(name)
  name = name.to_s
  return "" if name.blank?
  return name if name.match?(SAFE_XML_TAG_NAME_REGEXP)

  starting_char = name[0]
  starting_char.gsub!(INVALID_TAG_NAME_START_REGEXP, TAG_NAME_REPLACEMENT_CHAR)

  return starting_char if name.size == 1

  following_chars = name[1..-1]
  following_chars.gsub!(INVALID_TAG_NAME_FOLLOWING_REGEXP, TAG_NAME_REPLACEMENT_CHAR)

  starting_char << following_chars
end