Add RuboCop

.rubocop.yml

@@ -0,0 +1,94 @@
+AllCops:
+  Includes:
+    - 'Gemfile'
+    - 'Rakefile'
+    - 'http.gemspec'
+
+# Avoid long parameter lists
+ParameterLists:
+  Max: 3
+  CountKeywordArgs: true
+
+MethodLength:
+  CountComments: false
+  Max: 31 # TODO: lower to 15
+
+ClassLength:
+  CountComments: false
+  Max: 132 # TODO: lower to 100
+
+CyclomaticComplexity:
+  Max: 13 # TODO: lower to 6
+
+# Avoid more than `Max` levels of nesting.
+BlockNesting:
+  Max: 3
+
+# Align with the style guide.
+CollectionMethods:
+  PreferredMethods:
+    collect:  'map'
+    inject:   'reduce'
+    find:     'detect'
+    find_all: 'select'
+
+# Do not force public/protected/private keyword to be indented at the same
+# level as the def keyword. My personal preference is to outdent these keywords
+# because I think when scanning code it makes it easier to identify the
+# sections of code and visually separate them. When the keyword is at the same
+# level I think it sort of blends in with the def keywords and makes it harder
+# to scan the code and see where the sections are.
+AccessModifierIndentation:
+  Enabled: false
+
+# Limit line length
+LineLength:
+  Enabled: false
+
+# Disable documentation checking until a class needs to be documented once
+Documentation:
+  Enabled: false
+
+# Not all trivial readers/writers can be defined with attr_* methods
+TrivialAccessors:
+  Enabled: false
+
+# Enforce Ruby 1.8-compatible hash syntax
+HashSyntax:
+  EnforcedStyle: hash_rockets
+
+# No spaces inside hash literals
+SpaceInsideHashLiteralBraces:
+  EnforcedStyle: no_space
+
+# Allow dots at the end of lines
+DotPosition:
+  Enabled: false
+
+# Don't require magic comment at the top of every file
+Encoding:
+  Enabled: false
+
+# Enforce outdenting of access modifiers (i.e. public, private, protected)
+AccessModifierIndentation:
+  EnforcedStyle: outdent
+
+EmptyLinesAroundAccessModifier:
+  Enabled: true
+
+# Align ends correctly
+EndAlignment:
+  AlignWith: variable
+
+# Indentation of when/else
+CaseIndentation:
+  IndentWhenRelativeTo: end
+  IndentOneStep: false
+
+# Use the old lambda literal syntax
+Lambda:
+  Enabled: false
+
+Semicolon:
+  Exclude:
+    - 'spec/support/'

Gemfile

@@ -19,13 +19,15 @@ end
 group :test do
   gem 'coveralls', :require => false
   gem 'rspec', '>= 2.14'
+  gem 'rubocop', '>= 0.16', :platforms => [:ruby_19, :ruby_20, :ruby_21]
   platforms :jruby, :ruby_18 do
     gem 'json', '>= 1.8.1'
     gem 'mime-types', '~> 1.25'
   end
 end
 
 platforms :rbx do
+  gem 'racc'
   gem 'rubinius-coverage', '~> 2.0'
   gem 'rubysl', '~> 2.0'
   gem 'rubysl-json', '~> 2.0'

Rakefile

@@ -4,4 +4,15 @@ require 'bundler/gem_tasks'
 require 'rspec/core/rake_task'
 RSpec::Core::RakeTask.new
 
-task :default => :spec
+task :test => :spec
+
+begin
+  require 'rubocop/rake_task'
+  Rubocop::RakeTask.new
+rescue LoadError
+  task :rubocop do
+    $stderr.puts 'Rubocop is disabled'
+  end
+end
+
+task :default => [:spec, :rubocop]