Rake task to add new adapter template

Rakefile

@@ -19,7 +19,7 @@ Coveralls::RakeTask.new
 import 'lib/tasks/high_charts.rake'
 import 'lib/tasks/nyaplot.rake'
 import 'lib/tasks/google_charts.rake'
+import 'lib/tasks/new_adapter.rake'
 
 # TODO: add Nyaplot
 task :update_all => ["googlecharts:update", "highcharts:update"]
-

lib/tasks/new_adapter.rake

@@ -0,0 +1,47 @@
+def extract_adapter_template_code(file_name, template_code_str)
+  template_code_str << "module Daru"
+  template_code_str << "\n  module View"
+  template_code_str << "\n    module Adapter"
+  template_code_str << "\n      module #{file_name.capitalize}Adapter"
+  template_code_str << "\n        extend self # rubocop:disable Style/ModuleFunction"
+  template_code_str << "\n        def init(data, options, _user_options={})"
+  template_code_str << "\n          # TODO"
+  template_code_str << "\n        end"
+  template_code_str << "\n"
+  template_code_str << "\n        def export_html_file(plot, path='./plot.html')"
+  template_code_str << "\n          # TODO"
+  template_code_str << "\n        end"
+  template_code_str << "\n"
+  template_code_str << "\n        def show_in_iruby(plot)"
+  template_code_str << "\n          # TODO"
+  template_code_str << "\n        end"
+  template_code_str << "\n"
+  template_code_str << "\n        def init_script"
+  template_code_str << "\n          # TODO"
+  template_code_str << "\n        end"
+  template_code_str << "\n"
+  template_code_str << "\n        def init_iruby"
+  template_code_str << "\n          # TODO"
+  template_code_str << "\n        end"
+  template_code_str << "\n      end"
+  template_code_str << "\n    end"
+  template_code_str << "\n  end"
+  template_code_str << "\nend"
+  template_code_str << "\n"
+end
+
+namespace :new do  
+  desc "Generate a sample template for the new adapter"
+  task :adapter do
+    print "Creating new adapter..."
+    ARGV.each { |a| task a.to_sym do ; end }
+    file_name = ARGV[1].to_s
+    path = File.expand_path(
+            '../daru/view/adapters/' + file_name + '.rb', __dir__
+          )
+    template_code_str = ''
+    extract_adapter_template_code(file_name, template_code_str)
+    File.write(path, template_code_str)
+    puts "Done."
+  end
+end

spec/new_adapter_spec.rb

@@ -0,0 +1,9 @@
+require 'spec_helper'
+require 'rake'
+
+describe 'new:adapter' do
+  it "runs the task new:adapter" do
+    Rake.application.rake_require 'tasks/new_adapter'
+    expect { Rake::Task['new:adapter'].invoke }.not_to raise_exception
+  end
+end