Add bin/new-cop script

Replace rake task with simple bin script and avoid the hassle of passing rake arguments in ZSH.

README.md

@@ -8,9 +8,8 @@ Add `rubocop-jackpocket` to your Gemfile.
 
 ## Development
 
-All custom cops are located under [`lib/rubocop/cop/jackpocket`](lib/rubocop/cop/jackpocket).
+Run `bundle install` and then `bundle exec rspec` for setup.
+
+Generate a new cop with `bin/new-cop Jackpocket/MyCustomCop`.
 
-```
-bundle install
-bundle exec rspec
-```
+All custom cops are located under [`lib/rubocop/cop/jackpocket`](lib/rubocop/cop/jackpocket).

Rakefile

@@ -16,22 +16,3 @@ require 'rspec/core/rake_task'
 RSpec::Core::RakeTask.new(:spec) do |spec|
   spec.pattern = FileList['spec/**/*_spec.rb']
 end
-
-desc 'Generate a new cop with a template'
-task :new_cop, [:cop] do |_task, args|
-  require 'rubocop'
-
-  cop_name = args.fetch(:cop) do
-    warn 'usage: bundle exec rake new_cop[Department/Name]'
-    exit!
-  end
-
-  generator = RuboCop::Cop::Generator.new(cop_name)
-
-  generator.write_source
-  generator.write_spec
-  generator.inject_require(root_file_path: 'lib/rubocop/cop/jackpocket_cops.rb')
-  generator.inject_config(config_file_path: 'config/default.yml')
-
-  puts generator.todo
-end

bin/new-cop

@@ -0,0 +1,26 @@
+#!/usr/bin/env ruby
+# frozen_string_literal: true
+
+# Provide cop_name
+#
+# > bin/new-cop Jackpocket/MyCustomCop
+
+require "bundler/setup"
+require "rubocop"
+
+cop_name = ARGV[0]
+
+if cop_name.nil? || !cop_name.match?(/Jackpocket\/[A-Za-z]*/)
+  puts "Error: Missing or invalid cop name."
+  puts "Usage: bin/new-cop Jackpocket/MyCustomCop"
+  exit
+end
+
+generator = RuboCop::Cop::Generator.new(cop_name)
+
+generator.write_source
+generator.write_spec
+generator.inject_require(root_file_path: 'lib/rubocop/cop/jackpocket_cops.rb')
+generator.inject_config(config_file_path: 'config/default.yml')
+
+puts generator.todo