Adding SwiftLint feature.

defaults/liftoffrc

@@ -9,6 +9,7 @@
 
 test_target_name: UnitTests
 configure_git: true
+configure_swiftlint: true
 warnings_as_errors: true
 enable_static_analyzer: true
 indentation_level: 4

lib/liftoff.rb

@@ -16,6 +16,7 @@
 require "liftoff/dependency_managers/carthage"
 require "liftoff/dependency_managers/cocoapods"
 require "liftoff/dependency_managers/null_dependency_manager"
+require 'liftoff/swiftlint_setup'
 require 'liftoff/settings_generator'
 require 'liftoff/configuration_parser'
 require 'liftoff/deprecation_manager'

lib/liftoff/cli.rb

@@ -55,6 +55,10 @@ def global_options
           @options[:configure_git] = configure_git
         end
 
+        opts.on('--[no-]swiftlint', 'Enable/Disable swiftlint') do |configure_swiftlint|
+          @options[:configure_swiftlint] = configure_swiftlint
+        end
+
         opts.on('--no-open', "Don't open Xcode after generation") do
           @options[:xcode_command] = false
         end

lib/liftoff/launchpad.rb

@@ -45,6 +45,7 @@ def perform_project_actions
       perform_extra_config
       save_project
       generate_git
+      generate_swiftlint
     end
 
     def setup_dependency_managers
@@ -71,6 +72,13 @@ def generate_git
       GitSetup.new(@config).setup
     end
 
+    def generate_swiftlint
+      if @config.configure_swiftlint
+          swiftlint.setup
+          xcode_helper.add_script_phases(swiftlint.run_script_phases)
+      end
+    end
+
     def set_indentation_level
       xcode_helper.set_indentation_level(@config.indentation_level, @config.use_tabs)
     end
@@ -118,6 +126,10 @@ def file_manager
       @file_manager ||= FileManager.new
     end
 
+    def swiftlint
+      @swiftlint ||= SwiftLintSetup.new(@config)
+    end
+
     def dependency_manager_coordinator
       @dependency_manager_coordinator ||=
         DependencyManagerCoordinator.new(dependency_managers)

lib/liftoff/project_configuration.rb

@@ -5,6 +5,7 @@ class ProjectConfiguration
       :prefix,
       :test_target_name,
       :configure_git,
+      :configure_swiftlint,
       :enable_settings,
       :warnings_as_errors,
       :enable_static_analyzer,

lib/liftoff/swiftlint_setup.rb

@@ -0,0 +1,40 @@
+module Liftoff
+  class SwiftLintSetup
+    def initialize(config)
+      @config = config
+    end
+
+    def setup
+      if @config.configure_swiftlint
+        if swiftlint_installed?
+          generate_files
+        else
+          puts 'Please install Swiftlint or disable from liftoff'
+        end
+      end
+    end
+
+    def run_script_phases
+      [
+        {
+          "file" => "swiftlint.sh",
+          "name" => "Execute SwiftLint",
+        }
+      ]
+    end
+
+    private
+
+    def generate_files
+      file_manager.generate('swiftlint', '.swiftlint.yml', @config)
+    end
+
+    def swiftlint_installed?
+      system('which swiftlint > /dev/null')
+    end
+
+    def file_manager
+      @file_manager ||= FileManager.new
+    end
+  end
+end

man/liftoff.1

@@ -13,6 +13,7 @@
 .Op Fl -dependency-managers Ar NAMES
 .Op Fl -[no-]cocoapods
 .Op Fl -[no-]git
+.Op Fl -[no-]swiftlint
 .Op Fl -no-open
 .Op Fl -[no-]settings
 .Op Fl -template Ar TEMPLATE_NAME
@@ -52,6 +53,10 @@ enable or disable CocoaPods support
 enable or disable
 .Xr git 1
 configuration
+.It Fl -[no-]swiftlint
+enable or disable
+.Xr SwiftLint
+configuration
 .It Fl -no-open
 Don't open Xcode after project generation
 .It Fl -[no-]settings

man/liftoffrc.5

@@ -96,6 +96,15 @@ Create
 .Ic .gitignore ,
 .Ic .gitattributes ,
 and initialize git repo if needed.
+.It Ic configure_swiftlint
+type: boolean
+.br
+default:
+.Ic true
+.Pp
+Imports the default template of swiftlint
+and add script phases to perform the lint command
+on build. 
 .It Ic warnings_as_errors
 type: boolean
 .br
@@ -484,6 +493,10 @@ meaning.
 .Ic liftoff
 installs a number of templates by default:
 .Bl -tag -width 10
+.It Pa swiftlint
+This template is installed to
+.Pa .swiftlint.yml
+and contains a default lint rules to use with SwiftLint.
 .It Pa travis.yml
 This template is installed to
 .Pa .travis.yml ,

templates/swiftlint

@@ -0,0 +1,18 @@
+disabled_rules: # rule identifiers to exclude from running
+  - line_length
+  - todo
+  - trailing_whitespace
+  - variable_name
+excluded: # paths to ignore during linting. Takes precedence over `included`.
+  - Carthage
+  - Pods
+
+force_cast: warning # implicitly
+force_try:
+  severity: warning # explicitly
+variable_name:
+  min_length: # only min_length
+    warning: 3 # only warning
+  excluded: # excluded via string array
+    - id
+    - URL

templates/swiftlint.sh

@@ -0,0 +1,5 @@
+if which swiftlint >/dev/null; then
+  swiftlint
+else
+  echo "warning: SwiftLint not installed, download from https://github.com/realm/SwiftLint"
+fi