add Regexp timeout

lib/worldwide/phone.rb

@@ -137,14 +137,19 @@ def split_extension(input)
  number = input.downcase
 
  ["ext", "x", ";"].each do |separator|
- if number.include?(separator)
- m = number.match(Regexp.new("(?<base>[0-9a-z +-]*)\\s*#{separator}\\.?\\s*(?<ext>.*)"))
- return [m["base"], m["ext"]] unless m.nil?
- end
+ next unless number.include?(separator)
+
+ m = number.match(Regexp.new(
+ "(?<base>[0-9a-z +-]*)\\s*#{separator}\\.?\\s*(?<ext>.*)",
+ timeout: 1,
+ ))
+ return [m["base"], m["ext"]] unless m.nil?
  end
 
  # If we get this far, then we have not found an extension, and assume that the full input is just a public number
  [input, nil]
+ rescue Regexp::TimeoutError
+ [input, nil]
  end
 
  # Convert exotic characters to ASCII