Port Homebrew::DevCmd::Extract

Library/Homebrew/dev-cmd/extract.rb

@@ -1,6 +1,7 @@
 # typed: true
 # frozen_string_literal: true
 
+require "abstract_command"
 require "cli/parser"
 require "utils/git"
 require "formulary"
@@ -8,11 +9,11 @@ require "software_spec"
 require "tap"
 
 module Homebrew
+  module DevCmd
+    class Extract < AbstractCommand
       BOTTLE_BLOCK_REGEX = /  bottle (?:do.+?end|:[a-z]+)\n\n/m
 
-  sig { returns(CLI::Parser) }
+      cmd_args do
-  def self.extract_args
-    Homebrew::CLI::Parser.new do
         usage_banner "`extract` [`--version=`] [`--force`] <formula> <tap>"
         description <<~EOS
           Look through repository history to find the most recent version of <formula> and
@@ -29,11 +30,9 @@ module Homebrew
 
         named_args [:formula, :tap], number: 2, without_api: true
       end
-  end
-
-  def self.extract
-    args = extract_args.parse
 
+      sig { override.void }
+      def run
         if (tap_with_name = args.named.first&.then { Tap.with_formula_name(_1) })
           source_tap, name = tap_with_name
         else
@@ -149,9 +148,10 @@ module Homebrew
         path.write result
       end
 
-  # @private
+      private
+
       sig { params(repo: Pathname, name: String, file: Pathname, rev: String).returns(T.nilable(Formula)) }
-  def self.formula_at_revision(repo, name, file, rev)
+      def formula_at_revision(repo, name, file, rev)
         return if rev.empty?
 
         contents = Utils::Git.last_revision_of_file(repo, file, before_commit: rev)
@@ -161,7 +161,7 @@ module Homebrew
         with_monkey_patch { Formulary.from_contents(name, file, contents, ignore_errors: true) }
       end
 
-  private_class_method def self.with_monkey_patch
+      def with_monkey_patch
         # Since `method_defined?` is not a supported type guard, the use of `alias_method` below is not typesafe:
         BottleSpecification.class_eval do
           T.unsafe(self).alias_method :old_method_missing, :method_missing if method_defined?(:method_missing)
@@ -185,7 +185,10 @@ module Homebrew
         end
 
         DependencyCollector.class_eval do
-      T.unsafe(self).alias_method :old_parse_symbol_spec, :parse_symbol_spec if method_defined?(:parse_symbol_spec)
+          if method_defined?(:parse_symbol_spec)
+            T.unsafe(self).alias_method :old_parse_symbol_spec,
+                                        :parse_symbol_spec
+          end
           define_method(:parse_symbol_spec) do |*|
             # do nothing
           end
@@ -221,4 +224,6 @@ module Homebrew
           end
         end
       end
+    end
+  end
 end

Library/Homebrew/test/dev-cmd/extract_spec.rb

@@ -1,9 +1,10 @@
 # frozen_string_literal: true
 
 require "cmd/shared_examples/args_parse"
+require "dev-cmd/extract"
 
-RSpec.describe "brew extract" do
+RSpec.describe Homebrew::DevCmd::Extract do
-  it_behaves_like "parseable arguments"
+  it_behaves_like "parseable arguments", argv: ["foo", "bar"]
 
   context "when extracting a formula" do
     let!(:target) do