create FFI modules separately

so one does not have to remove the constant as a fallback of an error

Author: HoneyryderChuck

lib/idnx.rb

@@ -21,7 +21,6 @@ def to_punycode(hostname)
   rescue LoadError
     # fallback to pure ruby punycode 2003 implementation
     require "idnx/ruby"
-    Idnx.send(:remove_const, :Lib)
-    Idnx::Lib = Idnx::Ruby
+    Lib = Ruby
   end
 end

lib/idnx/idn2.rb

@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 module Idnx
-  module Lib
+  module Idn2
     extend FFI::Library
 
     if FFI::Platform.mac?
@@ -55,4 +55,6 @@ def lookup(hostname)
       ascii
     end
   end
+
+  Lib = Idn2
 end

lib/idnx/windows.rb

@@ -3,7 +3,7 @@
 require "win32ole"
 
 module Idnx
-  module Lib
+  module Windows
     extend FFI::Library
 
     ffi_lib "Normaliz.dll"
@@ -102,4 +102,6 @@ def lookup(hostname)
       unicode.strip! # remove null-byte
     end
   end
+
+  Lib = Windows
 end