ruby - 将字符串转换为实际的 UTF-8 字符

Question

样本文件包含这个。[“\u042D\u0440\u044B\u0433\u044D\u0436\u044D\u044D。\n"]

我想用实际的 utf-8 字符替换 \u[a-zA-Z0-9] 字符。应该怎么办？

File.new("mnosis.xml").each_line do |line|
  re = /\\u[0-9a-fA-F]{4}/
  new_str = line.gsub(re) {|match| puts match[0..1] + '#{' + match[2..5] + '}' }
  puts new_str
end

Answer 1

new_str = line.gsub(re) {|match| Array(match[2..5].to_i(16)).pack('U') }
=> "Эрыгэжээ."