a better way to code this to fix a URL?

[Skaperen]

if characters are not missing, i want them to be correct. correctness will be tested later. this code needs to just pass provided characters as is so they can be tested. later code will test for "http://" and file:///" and whatever else i might want to look for. it's "https://" that i am focusing on. the typical errors come from copy and paste sloppiness.