Add Rubocop (#59)

Merge pull request 59

.gitignore

@@ -1,6 +1,7 @@
-/vendor/gems
-.bundle
 bin
+.bundle
 /*.gem
-_site
 Gemfile.lock
+/pkg
+_site
+/vendor/gems

.rspec

@@ -0,0 +1,2 @@
+--color
+--require spec_helper

.rubocop.yml

@@ -0,0 +1,11 @@
+inherit_gem:
+  jekyll: .rubocop.yml
+
+AllCops:
+  Exclude:
+    - 'vendor/**/*'
+
+
+Metrics/BlockLength:
+  Exclude:
+    - spec/**/*

jemoji.gemspec

@@ -1,20 +1,19 @@
 Gem::Specification.new do |s|
-  s.name        = 'jemoji'
-  s.summary     = 'GitHub-flavored emoji plugin for Jekyll'
-  s.version     = '0.8.1'
-  s.authors     = ['GitHub, Inc.']
-  s.email       = 'support@github.com'
+  s.name        = "jemoji"
+  s.summary     = "GitHub-flavored emoji plugin for Jekyll"
+  s.version     = "0.8.1"
+  s.authors     = ["GitHub, Inc."]
+  s.email       = "support@github.com"
 
-  s.homepage = 'https://github.com/jekyll/jemoji'
-  s.licenses = ['MIT']
-  s.files    = [ 'lib/jemoji.rb' ]
+  s.homepage = "https://github.com/jekyll/jemoji"
+  s.licenses = ["MIT"]
+  s.files    = [ "lib/jemoji.rb" ]
 
-  s.add_dependency 'jekyll', '>= 3.0'
-  s.add_dependency 'html-pipeline', '~> 2.2'
-  s.add_dependency 'activesupport', '~> 4.0', '>= 4.2.9'
-  s.add_dependency 'gemoji', '~> 3.0'
+  s.add_dependency "jekyll", "~> 3.0"
+  s.add_dependency "html-pipeline", "~> 2.2"
+  s.add_dependency "activesupport", "~> 4.0", ">= 4.2.9"
+  s.add_dependency "gemoji", "~> 3.0"
 
-  s.add_development_dependency 'rake'
-  s.add_development_dependency 'rdoc'
-  s.add_development_dependency 'rspec', '~> 3.0'
+  s.add_development_dependency "rspec", "~> 3.0"
+  s.add_development_dependency "rubocop", "~> 0.38"
 end

lib/jemoji.rb

@@ -1,6 +1,6 @@
-require 'jekyll'
-require 'gemoji'
-require 'html/pipeline'
+require "jekyll"
+require "gemoji"
+require "html/pipeline"
 
 module Jekyll
   class Emoji
@@ -11,15 +11,12 @@ class Emoji
     class << self
       def emojify(doc)
         return unless doc.output =~ HTML::Pipeline::EmojiFilter.emoji_pattern
-        src = emoji_src(doc.site.config)
-        if doc.output.include? BODY_START_TAG
-          parsed_doc    = Nokogiri::HTML::Document.parse(doc.output)
-          body          = parsed_doc.at_css('body')
-          body.children = filter_with_emoji(src).call(body.inner_html)[:output].to_s
-          doc.output    = parsed_doc.to_html
-        else
-          doc.output = filter_with_emoji(src).call(doc.output)[:output].to_s
-        end
+        doc.output = if doc.output.include? BODY_START_TAG
+                       replace_document_body(doc)
+                     else
+                       src = emoji_src(doc.site.config)
+                       filter_with_emoji(src).call(doc.output)[:output].to_s
+                     end
       end
 
       # Public: Create or fetch the filter for the given {{src}} asset root.
@@ -29,8 +26,8 @@ def emojify(doc)
       # Returns an HTML::Pipeline instance for the given asset root.
       def filter_with_emoji(src)
         filters[src] ||= HTML::Pipeline.new([
-          HTML::Pipeline::EmojiFilter
-        ], { :asset_root => src, img_attrs: { align: nil } })
+          HTML::Pipeline::EmojiFilter,
+        ], { :asset_root => src, :img_attrs => { :align => nil } })
       end
 
       # Public: Filters hash where the key is the asset root source.
@@ -78,10 +75,18 @@ def default_asset_root
           "#{GITHUB_DOT_COM_ASSET_HOST_URL}#{ASSET_PATH}"
         end
       end
+
+      def replace_document_body(doc)
+        src           = emoji_src(doc.site.config)
+        parsed_doc    = Nokogiri::HTML::Document.parse(doc.output)
+        body          = parsed_doc.at_css("body")
+        body.children = filter_with_emoji(src).call(body.inner_html)[:output].to_s
+        parsed_doc.to_html
+      end
     end
   end
 end
 
-Jekyll::Hooks.register [:pages, :documents], :post_render do |doc|
+Jekyll::Hooks.register %i[pages documents], :post_render do |doc|
   Jekyll::Emoji.emojify(doc) if Jekyll::Emoji.emojiable?(doc)
 end

script/cibuild

@@ -1,3 +1,5 @@
 #! /bin/sh
 
-bundle exec rspec --color --require spec_helper $@
+bundle exec rspec $@
+script/fmt -S -D
+bundle exec gem build jemoji.gemspec

script/fmt

@@ -0,0 +1,2 @@
+#!/bin/bash
+bundle exec rubocop $@

spec/jemoji_spec.rb

@@ -1,21 +1,27 @@
-require 'spec_helper'
+# frozen_string_literal: true
+
+require "spec_helper"
 
 RSpec.describe(Jekyll::Emoji) do
   Jekyll.logger.log_level = :error
 
   let(:config_overrides) { {} }
   let(:configs) do
     Jekyll.configuration(config_overrides.merge({
-      'skip_config_files' => false,
-      'collections'       => { 'docs' => { 'output' => true }, 'secret' => {} },
-      'source'            => fixtures_dir,
-      'destination'       => fixtures_dir('_site')
+      "skip_config_files" => false,
+      "collections"       => { "docs" => { "output" => true }, "secret" => {} },
+      "source"            => fixtures_dir,
+      "destination"       => fixtures_dir("_site"),
     }))
   end
   let(:emoji)       { described_class }
   let(:site)        { Jekyll::Site.new(configs) }
   let(:default_src) { "https://assets-cdn.github.com/images/icons/" }
-  let(:result)      { "<img class=\"emoji\" title=\":+1:\" alt=\":+1:\" src=\"#{default_src}emoji/unicode/1f44d.png\" height=\"20\" width=\"20\">" }
+  let(:result) do
+    <<-STR.strip
+    <img class="emoji" title=":+1:" alt=":+1:" src="#{default_src}emoji/unicode/1f44d.png" height="20" width="20">
+    STR
+  end
 
   let(:posts)        { site.posts.docs }
   let(:basic_post)   { find_by_title(posts, "Refactor") }
@@ -88,7 +94,7 @@ def para(content)
     let(:emoji_src) { "http://mine.club/" }
     let(:config_overrides) do
       {
-        "emoji" => { "src" => emoji_src }
+        "emoji" => { "src" => emoji_src },
       }
     end
 

spec/spec_helper.rb

@@ -1,13 +1,14 @@
-require File.expand_path('../lib/jemoji.rb', __dir__)
+require File.expand_path("../lib/jemoji.rb", __dir__)
 
 RSpec.configure do |config|
-  FIXTURES_DIR = File.expand_path('fixture_site', __dir__)
+  FIXTURES_DIR = File.expand_path("fixture_site", __dir__)
+
   def fixtures_dir(*paths)
     File.join(FIXTURES_DIR, *paths)
   end
 
   def find_by_title(docs, title)
-    docs.find { |d| d.title == title }
+    docs.find { |d| d.data["title"] == title }
   end
 
   def index_fixture