Asterisk phonebook module

We need to build a phonebook application module that will take the source (from all our source types, for example CSV file) and generate it to a XML file that we can upload to our server and read it directly in our phones. Doing this will allow people to update their phone list directly via the URL that appears in their IP phone link. End users need to have an updated phonebook on their IP [login to view URL] IP phone can dynamically update his own phonebook via XML [login to view URL] phone brand (sometimes different modules / firmware in the same brand) has its own XML phonebook format. When we want to upload a phone-list to our IP phone, we need to upload XML [login to view URL] we export our phone-list from our email (Outlook, Exchange 2010, Google, etc), we get a CSV file. Each email type exports the CSV file in different ways. Please note: [login to view URL] work with several types of phone brands (Yealink, Snom, Grandstream, Linksys etc…) and each phone has its own xml format. [login to view URL] of the functions have code samples on the web. Our basic need is to merge them all to 1 simple tool that will be available to the end user.