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Classic ASP VB Filter File Name Extensions From String EndsWith

Came across a classic ASP VB site recently in my adventures. There was a feature request to filter out some file extensions from existing code logic, and I discovered quickly most of my .Net methods were unavailable, so I came up with this little snippet and had a great blast from the past. 🙂

   function FilterExtensions(fn)
   FilterExtensions=true
   a_ext = Array(".db",".db") 'place additional extensions here 
   for each ext in a_ext
      i = InStrRev(fn,ext)
   if i>0 then
   FilterExtensions=false
   end if
   next
   end function

If FilterExtensions returns true then there were no matches (extension of filename successfully passed all filters).