Port Homebrew::DevCmd::Unpack

Library/Homebrew/dev-cmd/unpack.rb

@@ -1,74 +1,78 @@
-# typed: true
+# typed: strict
 # frozen_string_literal: true
 
+require "abstract_command"
+require "fileutils"
 require "stringio"
 require "formula"
 require "cli/parser"
 
 module Homebrew
-  sig { returns(CLI::Parser) }
-  def self.unpack_args
-    Homebrew::CLI::Parser.new do
-      description <<~EOS
-        Unpack the source files for <formula> into subdirectories of the current
-        working directory.
-      EOS
-      flag   "--destdir=",
-             description: "Create subdirectories in the directory named by <path> instead."
-      switch "--patch",
-             description: "Patches for <formula> will be applied to the unpacked source."
-      switch "-g", "--git",
-             description: "Initialise a Git repository in the unpacked source. This is useful for creating " \
-                          "patches for the software."
-      switch "-f", "--force",
-             description: "Overwrite the destination directory if it already exists."
+  module DevCmd
+    class Unpack < AbstractCommand
+      include FileUtils
 
-      conflicts "--git", "--patch"
+      cmd_args do
+        description <<~EOS
+          Unpack the source files for <formula> into subdirectories of the current
+          working directory.
+        EOS
+        flag   "--destdir=",
+               description: "Create subdirectories in the directory named by <path> instead."
+        switch "--patch",
+               description: "Patches for <formula> will be applied to the unpacked source."
+        switch "-g", "--git",
+               description: "Initialise a Git repository in the unpacked source. This is useful for creating " \
+                            "patches for the software."
+        switch "-f", "--force",
+               description: "Overwrite the destination directory if it already exists."
 
-      named_args :formula, min: 1
-    end
-  end
+        conflicts "--git", "--patch"
 
-  def self.unpack
-    args = unpack_args.parse
-
-    formulae = args.named.to_formulae
-
-    if (dir = args.destdir)
-      unpack_dir = Pathname.new(dir).expand_path
-      unpack_dir.mkpath
-    else
-      unpack_dir = Pathname.pwd
-    end
-
-    odie "Cannot write to #{unpack_dir}" unless unpack_dir.writable_real?
-
-    formulae.each do |f|
-      stage_dir = unpack_dir/"#{f.name}-#{f.version}"
-
-      if stage_dir.exist?
-        odie "Destination #{stage_dir} already exists!" unless args.force?
-
-        rm_rf stage_dir
+        named_args :formula, min: 1
       end
 
-      oh1 "Unpacking #{Formatter.identifier(f.full_name)} to: #{stage_dir}"
+      sig { override.void }
+      def run
+        formulae = args.named.to_formulae
 
-      # show messages about tar
-      with_env VERBOSE: "1" do
-        f.brew do
-          f.patch if args.patch?
-          cp_r getwd, stage_dir, preserve: true
+        if (dir = args.destdir)
+          unpack_dir = Pathname.new(dir).expand_path
+          unpack_dir.mkpath
+        else
+          unpack_dir = Pathname.pwd
         end
-      end
 
-      next unless args.git?
+        odie "Cannot write to #{unpack_dir}" unless unpack_dir.writable_real?
 
-      ohai "Setting up Git repository"
-      cd(stage_dir) do
-        system "git", "init", "-q"
-        system "git", "add", "-A"
-        system "git", "commit", "-q", "-m", "brew-unpack"
+        formulae.each do |f|
+          stage_dir = unpack_dir/"#{f.name}-#{f.version}"
+
+          if stage_dir.exist?
+            odie "Destination #{stage_dir} already exists!" unless args.force?
+
+            rm_rf stage_dir
+          end
+
+          oh1 "Unpacking #{Formatter.identifier(f.full_name)} to: #{stage_dir}"
+
+          # show messages about tar
+          with_env VERBOSE: "1" do
+            f.brew do
+              f.patch if args.patch?
+              cp_r getwd, stage_dir, preserve: true
+            end
+          end
+
+          next unless args.git?
+
+          ohai "Setting up Git repository"
+          cd(stage_dir) do
+            system "git", "init", "-q"
+            system "git", "add", "-A"
+            system "git", "commit", "-q", "-m", "brew-unpack"
+          end
+        end
       end
     end
   end

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

@@ -1,8 +1,9 @@
 # frozen_string_literal: true
 
 require "cmd/shared_examples/args_parse"
+require "dev-cmd/unpack"
 
-RSpec.describe "brew unpack" do
+RSpec.describe Homebrew::DevCmd::Unpack do
   it_behaves_like "parseable arguments"
 
   it "unpacks a given Formula's archive", :integration_test do