impr: more strict check, also improve performance

Author: initdc

lib/rootfs/distro/ubuntu/arch.rb

@@ -22,9 +22,8 @@ def parse_arch(any)
         str = any.to_s
         puts err_msg if str.empty?
 
-        ARCH.each do |arch|
-          return { arch: arch } if str.include?(arch)
-        end
+        return { arch: str } if ARCH.include?(str)
+
         puts err_msg
       end
     end

lib/rootfs/distro/ubuntu/edition.rb

@@ -49,9 +49,8 @@ def parse_edition(any)
         str = any.to_s
         puts err_msg if str.empty?
 
-        EDITION.each do |edition|
-          return { edition: edition } if str.include?(edition)
-        end
+        return { edition: str } if EDITION.include?(str)
+
         puts err_msg
       end