The whole point about using a standard CPAN module like Text::CSV(_XS) is that someone else has already figured out how to do all the things you listed -- and that code has already been debugged and tested -- so all you need to worry about is learning to use the module correctly.

Plus, there's probably a few things you hadn't thought of yet, and there are some choices you might like to have available as options. The module will support those things too.