You don't need all the options. Search google. Parsing resolve.conf is an old technique and the file was written assuming individual apps will be parsing it. You will find instructions on how to do it in say 4 lines. Explicitly for this file. Not any random conf file from the system.
Then your application won't be portable. Which is fine if you have no plans of distributing it. But otherwise I can guarantee it will break on some machine.
