Port Homebrew::DevCmd::GenerateFormulaApi

Library/Homebrew/dev-cmd/generate-formula-api.rb

@@ -5,11 +5,16 @@ require "cli/parser"
 require "formula"
 
 module Homebrew
-  module_function
+  module DevCmd
+    class GenerateFormulaApi < AbstractCommand
+      FORMULA_JSON_TEMPLATE = <<~EOS
+        ---
+        layout: formula_json
+        ---
+        {{ content }}
+      EOS
 
-  sig { returns(CLI::Parser) }
-  def generate_formula_api_args
-    Homebrew::CLI::Parser.new do
+      cmd_args do
         description <<~EOS
           Generate `homebrew/core` API data files for <#{HOMEBREW_API_WWW}>.
           The generated files are written to the current directory.
@@ -19,29 +24,9 @@ module Homebrew
 
         named_args :none
       end
-  end
-
-  FORMULA_JSON_TEMPLATE = <<~EOS
-    ---
-    layout: formula_json
-    ---
-    {{ content }}
-  EOS
-
-  def html_template(title)
-    <<~EOS
-      ---
-      title: #{title}
-      layout: formula
-      redirect_from: /formula-linux/#{title}
-      ---
-      {{ content }}
-    EOS
-  end
-
-  def generate_formula_api
-    args = generate_formula_api_args.parse
 
+      sig { override.void }
+      def run
         tap = CoreTap.instance
         raise TapUnavailableError, tap.name unless tap.installed?
 
@@ -80,4 +65,19 @@ module Homebrew
           File.write("_data/formula_canonical.json", "#{canonical_json}\n") unless args.dry_run?
         end
       end
+
+      private
+
+      def html_template(title)
+        <<~EOS
+          ---
+          title: #{title}
+          layout: formula
+          redirect_from: /formula-linux/#{title}
+          ---
+          {{ content }}
+        EOS
+      end
+    end
+  end
 end

Library/Homebrew/test/dev-cmd/generate-formula-api_spec.rb

@@ -1,7 +1,8 @@
 # frozen_string_literal: true
 
 require "cmd/shared_examples/args_parse"
+require "dev-cmd/generate-formula-api"
 
-RSpec.describe "brew generate-formula-api" do
+RSpec.describe Homebrew::DevCmd::GenerateFormulaApi do
   it_behaves_like "parseable arguments"
 end