Add Rubocop corrections

.rubocop.yml

@@ -0,0 +1,18 @@
+# Opt in to new cops by default
+AllCops:
+  NewCops: enable
+
+# Allow the Podspec filename to match the project
+Naming/FileName:
+  Exclude:
+    - 'Gridicons.podspec'
+
+# Override the maximum block length (some pods have long definitions)
+Metrics/BlockLength:
+  Max: 256
+
+# Override the maximum line length
+Layout/LineLength:
+  Max: 160
+
+require: rubocop-rake

Gemfile

@@ -5,5 +5,6 @@ source 'https://rubygems.org'
 gem 'cocoapods', '~> 1.10'
 gem 'cocoapods-check', '~> 1.1'
 gem 'fastlane', '~> 2.189'
-gem 'rubocop', '~> 1.18'
 gem 'rake', '~> 13'
+gem 'rubocop', '~> 1.18'
+gem 'rubocop-rake', '~> 0.6.0'

Gemfile.lock

@@ -240,6 +240,8 @@ GEM
       unicode-display_width (>= 1.4.0, < 3.0)
     rubocop-ast (1.9.1)
       parser (>= 3.0.1.1)
+    rubocop-rake (0.6.0)
+      rubocop (~> 1.0)
     ruby-macho (1.4.0)
     ruby-progressbar (1.11.0)
     ruby2_keywords (0.0.5)
@@ -294,6 +296,7 @@ DEPENDENCIES
   fastlane (~> 2.189)
   rake (~> 13)
   rubocop (~> 1.18)
+  rubocop-rake (~> 0.6.0)
 
 BUNDLED WITH
    2.2.23

Gridicons.podspec

@@ -1,26 +1,28 @@
+# frozen_string_literal: true
+
 Pod::Spec.new do |s|
-  s.name          = "Gridicons"
-  s.version       = "1.1.0"
+  s.name          = 'Gridicons'
+  s.version       = '1.1.0'
 
-  s.summary       = "Gridicons is a tiny framework which generates Gridicon images at any resolution."
+  s.summary       = 'Gridicons is a tiny framework which generates Gridicon images at any resolution.'
   s.description   = <<-DESC
                     This framework contains a pack of icons – mainly ones used in the WordPress apps –
                     that can be reused and scaled at any resolution.
-                  DESC
+  DESC
 
-  s.homepage      = "https://github.com/Automattic/Gridicons-iOS"
-  s.license       = { :type => "GPLv2", :file => "LICENSE.md" }
-  s.author        = { "Automattic" => "[email protected]" }
-  s.social_media_url = "https://twitter.com/automattic"
+  s.homepage      = 'https://github.com/Automattic/Gridicons-iOS'
+  s.license       = { type: 'GPLv2', file: 'LICENSE.md' }
+  s.author        = { 'Automattic' => '[email protected]' }
+  s.social_media_url = 'https://twitter.com/automattic'
 
-  s.platform      = :ios, "11.0"
+  s.platform      = :ios, '11.0'
   s.swift_version = '5.0'
 
-  s.source        = { :git => "https://github.com/Automattic/Gridicons-iOS.git", :tag => s.version.to_s }
-  s.source_files  = "Gridicons/Gridicons/**/*.swift"
+  s.source        = { git: 'https://github.com/Automattic/Gridicons-iOS.git', tag: s.version.to_s }
+  s.source_files  = 'Gridicons/Gridicons/**/*.swift'
   s.resource_bundles = {
-    'Gridicons': [
-      'Gridicons/Gridicons/*.{xcassets}',
+    Gridicons: [
+      'Gridicons/Gridicons/*.{xcassets}'
     ]
   }
 end

Rakefile

@@ -1,85 +1,89 @@
-SWIFTGEN_VERSION="6.1.0"
+# frozen_string_literal: true
+
+SWIFTGEN_VERSION = '6.1.0'
 
 require 'fileutils'
 require 'tmpdir'
 require 'rake/clean'
-PROJECT_DIR = File.expand_path(File.dirname(__FILE__))
+PROJECT_DIR = __dir__
 
 task default: %w[gen]
 
-desc "Install required dependencies"
-task :dependencies => %w[dependencies:check]
+desc 'Install required dependencies'
+task dependencies: %w[dependencies:check]
 
 namespace :dependencies do
-  task :check => %w[gen:check]
+  task check: %w[gen:check]
 
   namespace :gen do
-
+    desc 'Install SwiftGen if needed'
     task :check do
       if swiftgen_needs_install
-        dependency_failed("SwiftGen")
-        Rake::Task["dependencies:gen:install"].invoke
+        dependency_failed('SwiftGen')
+        Rake::Task['dependencies:gen:install'].invoke
       end
     end
 
+    desc 'Install SwiftGen'
     task :install do
       puts "Installing SwiftGen #{SWIFTGEN_VERSION} into #{swiftgen_path}"
       Dir.mktmpdir do |tmpdir|
         zipfile = "#{tmpdir}/swiftgen-#{SWIFTGEN_VERSION}.zip"
-        sh "curl --fail --location -o #{zipfile} https://github.com/SwiftGen/SwiftGen/releases/download/#{SWIFTGEN_VERSION}/swiftgen-#{SWIFTGEN_VERSION}.zip || true"
-        if File.exists?(zipfile)
+        source = "https://github.com/SwiftGen/SwiftGen/releases/download/#{SWIFTGEN_VERSION}/swiftgen-#{SWIFTGEN_VERSION}.zip"
+        sh "curl --fail --location -o #{zipfile} #{source} || true"
+        if File.exist?(zipfile)
           zipdir = "#{tmpdir}/swiftgen-#{SWIFTGEN_VERSION}"
           sh "unzip -q #{zipfile} -d #{zipdir}"
           Dir.chdir(zipdir) do
             puts "Copying SwiftGen #{SWIFTGEN_VERSION} into #{swiftgen_path}"
             FileUtils.remove_entry_secure(swiftgen_path) if Dir.exist?(swiftgen_path)
-            FileUtils.mkdir_p("#{swiftgen_path}")
-            FileUtils.cp_r("#{zipdir}/lib", "#{swiftgen_path}")
-            FileUtils.cp_r("#{zipdir}/bin", "#{swiftgen_path}")
+            FileUtils.mkdir_p(swiftgen_path.to_s)
+            FileUtils.cp_r("#{zipdir}/lib", swiftgen_path.to_s)
+            FileUtils.cp_r("#{zipdir}/bin", swiftgen_path.to_s)
           end
         end
       end
     end
-    CLOBBER << "vendor/swiftgen"
+    CLOBBER << 'vendor/swiftgen'
   end
-
 end
 
-CLOBBER << "vendor"
+CLOBBER << 'vendor'
 
-desc "Regenerates the master Gridicon enum from PDF assets"
-task :gen => %w[dependencies:gen:check] do
+desc 'Regenerates the master Gridicon enum from PDF assets'
+task gen: %w[dependencies:gen:check] do
   swiftgen %w[xcassets -p Gridicons.stencil Gridicons/Gridicons/Gridicons.xcassets]
-  puts "Done!"
+  puts 'Done!'
 end
 
 def swiftgen_path
-    "#{PROJECT_DIR}/vendor/swiftgen"
+  "#{PROJECT_DIR}/vendor/swiftgen"
 end
 
 def swiftgen(args)
   args = [swiftgen_bin] + args
-  sh(*args.join(" ") + " > Gridicons/Gridicons/GridiconsGenerated.swift")
+  sh(["#{args.join(' ')} > Gridicons/Gridicons/GridiconsGenerated.swift"])
 end
 
 def swiftgen_bin
-    "#{swiftgen_path}/bin/swiftgen"
+  "#{swiftgen_path}/bin/swiftgen"
 end
 
 def swiftgen_needs_install
   return true unless File.exist?(swiftgen_bin)
+
   installed_version = `"#{swiftgen_bin}" --version | awk '{print $2}'`.chomp
   installed_version.slice!(0)
-  return (installed_version != SWIFTGEN_VERSION)
+  (installed_version != SWIFTGEN_VERSION)
 end
 
 def dependency_failed(component)
   msg = "#{component} dependencies missing or outdated. "
   if ENV['DRY_RUN']
-    msg += "Run rake dependencies to install them."
-    fail msg
+    msg += 'Run rake dependencies to install them.'
+    raise msg
   else
-    msg += "Installing..."
+    msg += 'Installing...'
     puts msg
   end
 end