json2xml.rb

def json2simpleHash(json_str, prefix = '')
  result = {}
  json = JSON.parse(json_str)
  json.each do |key, value|
    if(value.is_a?(Hash))
      result.merge!(json2simpleHash(value.to_json, prefix+key+'_'))
    else
      result.merge!({"#{prefix}#{key}" => value})
    end
  end
  return result
end


def json2xml(json_str)
  result = '<?xml version="1.0" encoding="utf-8"?>'
  result += "\n"
  result += '<resources>'
  json2simpleHash(json_str).each do |key, value|
    result += "\n"
    result << "<string name=\"#{key}\">#{value}</string>"
  end
  result += "\n"
  result += '</resources>'
end

#usage
json2xml(json_str)