iphone - 从Localizable.strings文件中读取字典中的键值

I want to read the text from the localizable.strings file. I am collecting the strings for translation from several directories and file in one .strings file. But then I have several copies of the same translation strings. I want to remove this programmatically. So I need to read the strings only (not the comments) from the .strings file, and - then sort them, - remove repeated strings then create a new .strings file. I want to read the text from the localizable.st