Refactor CLI::InternalStanza.

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

@@ -51,70 +51,76 @@ module Hbc
       ]
 
       def self.run(*args)
+        new(*args).run
+      end
+
+      def initialize(*args)
         raise ArgumentError, "No stanza given." if args.empty?
 
-        table = args.include? "--table"
+        @table = args.include? "--table"
-        quiet = args.include? "--quiet"
+        @quiet = args.include? "--quiet"
-        format = :to_yaml if args.include? "--yaml"
+        @format = :to_yaml if args.include? "--yaml"
-        format = :inspect if args.include? "--inspect"
+        @format = :inspect if args.include? "--inspect"
-        cask_tokens = cask_tokens_from(args)
+        @cask_tokens = self.class.cask_tokens_from(args)
-        stanza = cask_tokens.shift.to_sym
+        @stanza = @cask_tokens.shift.to_sym
-        cask_tokens = Hbc.all_tokens if cask_tokens.empty?
+        @cask_tokens = Hbc.all_tokens if @cask_tokens.empty?
+      end
 
-        retval = print_stanzas(stanza, format, table, quiet, *cask_tokens)
+      def run
+        retval = print_stanzas
 
         # retval is ternary: true/false/nil
         if retval.nil?
-          exit 1 if quiet
+          exit 1 if @quiet
           raise CaskError, "nothing to print"
         elsif !retval
-          exit 1 if quiet
+          exit 1 if @quiet
           raise CaskError, "print incomplete"
         end
       end
 
-      def self.print_stanzas(stanza, format = nil, table = nil, quiet = nil, *cask_tokens)
+      def print_stanzas
         count = 0
-        if ARTIFACTS.include?(stanza)
+        if ARTIFACTS.include?(@stanza)
-          artifact_name = stanza
+          artifact_name = @stanza
-          stanza = :artifacts
+          @stanza = :artifacts
         end
 
-        cask_tokens.each do |cask_token|
+        @cask_tokens.each do |cask_token|
-          print "#{cask_token}\t" if table
+          print "#{cask_token}\t" if @table
 
           begin
             cask = CaskLoader.load(cask_token)
           rescue StandardError
-            opoo "Cask '#{cask_token}' was not found" unless quiet
+            opoo "Cask '#{cask_token}' was not found" unless @quiet
             puts ""
             next
           end
 
-          unless cask.respond_to?(stanza)
+          unless cask.respond_to?(@stanza)
-            opoo "no such stanza '#{stanza}' on Cask '#{cask_token}'" unless quiet
+            opoo "no such stanza '#{@stanza}' on Cask '#{cask_token}'" unless @quiet
             puts ""
             next
           end
 
           begin
-            value = cask.send(stanza)
+            value = cask.send(@stanza)
           rescue StandardError
-            opoo "failure calling '#{stanza}' on Cask '#{cask_token}'" unless quiet
+            opoo "failure calling '#{@stanza}' on Cask '#{cask_token}'" unless @quiet
             puts ""
             next
           end
 
           if artifact_name && !value.key?(artifact_name)
-            opoo "no such stanza '#{artifact_name}' on Cask '#{cask_token}'" unless quiet
+            opoo "no such stanza '#{artifact_name}' on Cask '#{cask_token}'" unless @quiet
             puts ""
             next
           end
 
           value = value.fetch(artifact_name).to_a.flatten if artifact_name
 
-          if format
+          if @format
-            puts value.send(format)
+            puts value.send(@format)
           elsif artifact_name || value.is_a?(Symbol)
             puts value.inspect
           else
@@ -123,7 +129,7 @@ module Hbc
 
           count += 1
         end
-        count.zero? ? nil : count == cask_tokens.length
+        count.zero? ? nil : count == @cask_tokens.length
       end
 
       def self.help