Refactor CLI::InternalDump.

Library/Homebrew/cask/lib/hbc/cli/internal_dump.rb

@@ -1,19 +1,26 @@
 module Hbc
   class CLI
     class InternalDump < InternalUseBase
-      def self.run(*arguments)
-        cask_tokens = cask_tokens_from(arguments)
-        raise CaskUnspecifiedError if cask_tokens.empty?
-        retval = dump_casks(*cask_tokens)
+      def self.run(*args)
+        new(*args).run
+      end
+
+      def initialize(*args)
+        @cask_tokens = self.class.cask_tokens_from(args)
+        raise CaskUnspecifiedError if @cask_tokens.empty?
+      end
+
+      def run
+        retval = dump_casks
         # retval is ternary: true/false/nil
 
         raise CaskError, "nothing to dump" if retval.nil?
         raise CaskError, "dump incomplete" unless retval
       end
 
-      def self.dump_casks(*cask_tokens)
+      def dump_casks
         count = 0
-        cask_tokens.each do |cask_token|
+        @cask_tokens.each do |cask_token|
           begin
             cask = CaskLoader.load(cask_token)
             count += 1
@@ -22,7 +29,7 @@ module Hbc
             opoo "#{cask_token} was not found or would not load: #{e}"
           end
         end
-        count.zero? ? nil : count == cask_tokens.length
+        count.zero? ? nil : count == @cask_tokens.length
       end
 
       def self.help