Datatables Custom Wildcard Search

I am trying to perform a custom search using datatables. I am having trouble searching with a wildcard.

The data in the column has a specific format.

AB
AB[A-Z]
AB[A-Z]-00[0-9]

I only want to return a result if the format matches or there is a wildcard. So,

if the input is "AB" don't return ABC or ABC-00X
if the input is "ABC" don't return AB or ABC-00X
if the input is "ABC-00X" only return ABC-00X
if the input is "ABC*" return ABC-001, ABC-002, ABC-003, and so on...

I am intercepting the input field using:

    $(".dataTables_filter input")
        .off()
        .on('input', function (e) {
            var search = this.value;

            if (search.length >= 2 ) {
            var newSearch;
            if (/^(AB)$/i.test(search)) {
                newSearch = '^AB$';
            } else
                if (/^(AB[A-Z]-00[0-9])/i.test(search)) {
                    newSearch = search;
                } 
            else
                if (/^(AB[A-Z])/i.test(search)) {
                    newSearch = '^' + search.split('-')[0] + '$';
                } 

                oTable.fnFilter(newSearch, 4, true, false, false, true);
            }
            if (this.value.length < 2) {
                oTable.fnFilter('', 4, false, false, false, true)
            }
            return;
        });

I am using a regex search to check the input and make sure it matches the right format, then creating an new regex string to search. I run into a problem when trying to use a wildcard. I suspect the first regex layer is testing if an actual asterisk exists and it doesn't. I'm just not sure how to pass the asterisk through to the second layer.