将XML文件转换为Nib文件？

I want to know about conversion from XML file to Nib file in objective-c,My requirement is commonly Xib file after compilation it will converted into NIB file (binary Data Format) now i want to give an external Xml file to My Project and I want to convert this file as a Nib file. Is this possible?Give me suggestions(it means that replacement of Xib file With XML file). I want to know about conversion from XML file t