Update dependencies

.travis.yml

@@ -22,19 +22,13 @@ rvm:
   - 2.4.0
   - 2.3.1
   - 2.2.5
-  - 2.1
-  - 2.0
   - ruby-head
 
 matrix:
   fast_finish: true
   allow_failures:
     - rvm: ruby-head
   exclude:
-    - gemfile: gemfiles/rails_5.gemfile
-      rvm: 2.1
-    - gemfile: gemfiles/rails_5.gemfile
-      rvm: 2.0
     - gemfile: gemfiles/rails_4.gemfile
       rvm: 2.4.0
     - gemfile: gemfiles/rails_3.gemfile

Appraisals

@@ -1,13 +1,13 @@
-appraise "rails-3" do
-  gem "rack", "< 2"
-  gem "rails", "3.2.22.2"
+appraise 'rails-3' do
+  gem 'rack', '< 2'
+  gem 'rails', '3.2.22.2'
 end
 
-appraise "rails-4" do
-  gem "rack", "< 2"
-  gem "rails", "~> 4.2.6"
+appraise 'rails-4' do
+  gem 'rack', '< 2'
+  gem 'rails', '~> 4.2.6'
 end
 
-appraise "rails-5" do
-  gem "rails", "~> 5.0.0"
+appraise 'rails-5' do
+  gem 'rails', '~> 5.0.0'
 end

Gemfile

@@ -1,32 +1,23 @@
-source "https://rubygems.org"
+source 'https://rubygems.org'
 
 # Specify your gem's dependencies in html-pipeline.gemspec
 gemspec
 
 group :development do
-  gem "bundler"
-  gem "rake"
-  gem "appraisal"
+  gem 'appraisal'
+  gem 'bundler'
+  gem 'rake'
 end
 
 group :test do
-  gem "minitest"
-  gem "rinku",              "~> 1.7",   :require => false
-  gem "gemoji",             "~> 2.0",   :require => false
-  gem "RedCloth",           "~> 4.2.9", :require => false
-  gem "commonmarker",       "~> 0.14",  :require => false
-  gem "email_reply_parser", "~> 0.5",   :require => false
-  gem "sanitize",           "~> 2.0",   :require => false
+  gem 'commonmarker', '~> 0.14', require: false
+  gem 'email_reply_parser', '~> 0.5', require: false
+  gem 'gemoji', '~> 2.0', require: false
+  gem 'minitest'
+  gem 'RedCloth',           '~> 4.2.9', require: false
+  gem 'rinku',              '~> 1.7',   require: false
+  gem 'sanitize',           '~> 2.0',   require: false
 
-  if RUBY_VERSION < "2.1.0"
-    gem "escape_utils",     "~> 0.3",   :require => false
-    gem "github-linguist",  "~> 2.6.2", :require => false
-  else
-    gem "escape_utils",     "~> 1.0",   :require => false
-    gem "github-linguist",  "~> 2.10",  :require => false
-  end
-
-  if RUBY_VERSION < "1.9.3"
-    gem "activesupport", ">= 2", "< 4"
-  end
+  gem 'escape_utils', '~> 1.0', require: false
+  gem 'rouge', '~> 3.1', require: false
 end

README.md

@@ -171,12 +171,12 @@ EmojiPipeline = Pipeline.new [
 
 Filter gem dependencies are not bundled; you must bundle the filter's gem
 dependencies. The below list details filters with dependencies. For example,
-`SyntaxHighlightFilter` uses [github-linguist](https://github.com/github/linguist)
+`SyntaxHighlightFilter` uses [rouge](https://github.com/jneen/rouge)
 to detect and highlight languages. For example, to use the `SyntaxHighlightFilter`,
 add the following to your Gemfile:
 
 ```ruby
-gem 'github-linguist'
+gem 'rouge'
 ```
 
 * `AutolinkFilter` - `rinku`
@@ -185,7 +185,7 @@ gem 'github-linguist'
 * `MarkdownFilter` - `commonmarker`
 * `PlainTextInputFilter` - `escape_utils`
 * `SanitizationFilter` - `sanitize`
-* `SyntaxHighlightFilter` - `github-linguist`
+* `SyntaxHighlightFilter` - `rouge`
 * `TextileFilter` - `RedCloth`
 
 _Note:_ See [Gemfile](/Gemfile) `:test` block for version requirements.
@@ -242,7 +242,6 @@ Here are some extensions people have built:
 * [tilt-html-pipeline](https://github.com/bradgessler/tilt-html-pipeline)
 * [html-pipeline-wiki-link'](https://github.com/lifted-studios/html-pipeline-wiki-link) - WikiMedia-style wiki links
 * [task_list](https://github.com/github/task_list) - GitHub flavor Markdown Task List
-* [html-pipeline-rouge_filter](https://github.com/JuanitoFatas/html-pipeline-rouge_filter) - Syntax highlight with [Rouge](https://github.com/jneen/rouge/)
 * [html-pipeline-nico_link](https://github.com/rutan/html-pipeline-nico_link) - An HTML::Pipeline filter for [niconico](http://www.nicovideo.jp) description links
 * [html-pipeline-gitlab](https://gitlab.com/gitlab-org/html-pipeline-gitlab) - This gem implements various filters for html-pipeline used by GitLab
 * [html-pipeline-youtube](https://github.com/st0012/html-pipeline-youtube) - An HTML::Pipeline filter for YouTube links

Rakefile

@@ -1,14 +1,14 @@
 #!/usr/bin/env rake
-require "rubygems"
-require "bundler/setup"
+require 'rubygems'
+require 'bundler/setup'
 
-require "bundler/gem_tasks"
+require 'bundler/gem_tasks'
 require 'rake/testtask'
 
 Rake::TestTask.new do |t|
-  t.libs << "test"
+  t.libs << 'test'
   t.test_files = FileList['test/**/*_test.rb']
   t.verbose = true
 end
 
-task :default => :test
+task default: :test

bin/html-pipeline

@@ -4,23 +4,23 @@ require 'html/pipeline'
 require 'optparse'
 
 # Accept "help", too
-ARGV.map!{|a| a == "help" ? "--help" : a }
+.map! { |a| a == 'help' ? '--help' : a }
 
-OptionParser.new do |opts|
+onParser.new do |opts|
   opts.banner = <<-HELP.gsub(/^    /, '')
     Usage: html-pipeline [-h] [-f]
            html-pipeline [FILTER [FILTER [...]]] < file.md
-           cat file.md | html-pipeline [FILTER [FILTER [...]]]
+       cat file.md | html-pipeline [FILTER [FILTER [...]]]
   HELP
 
-  opts.separator "Options:"
+ opts.separator 'Options:'
 
-  opts.on("-f", "--filters", "List the available filters") do
-    filters = HTML::Pipeline.constants.grep(/\w+Filter$/).
-      map{|f| f.to_s.gsub(/Filter$/,'') }
+  opts.on('-f', '--filters', 'List the available filters') do
+    filters = HTML::Pipeline.constants.grep(/\w+Filter$/)
+                            .map { |f| f.to_s.gsub(/Filter$/, '') }
 
     # Text filter doesn't work, no call method
-    filters -= ["Text"]
+    filters -= ['Text']
 
     abort <<-HELP.gsub(/^      /, '')
       Available filters:
@@ -38,12 +38,12 @@ if ARGV.empty?
     HTML::Pipeline::ImageMaxWidthFilter,
     HTML::Pipeline::EmojiFilter,
     HTML::Pipeline::AutolinkFilter,
-    HTML::Pipeline::TableOfContentsFilter,
+    HTML::Pipeline::TableOfContentsFilter
   ]
 
-  # Add syntax highlighting if linguist is present
+  # Add syntax highlighting if rouge is present
   begin
-    require 'linguist'
+    require 'rouge'
     filters << HTML::Pipeline::SyntaxHighlightFilter
   rescue LoadError
   end
@@ -52,7 +52,7 @@ else
 
   def filter_named(name)
     case name
-    when "Text"
+    when 'Text'
       raise NameError # Text filter doesn't work, no call method
     end
 
@@ -70,9 +70,9 @@ else
 end
 
 context = {
-  :asset_root => "/assets",
-  :base_url   => "/",
-  :gfm        => true
+  asset_root: '/assets',
+  base_url: '/',
+  gfm: true
 }
 
 puts HTML::Pipeline.new(filters, context).call(ARGF.read)[:output]

gemfiles/rails_3.gemfile

@@ -20,7 +20,7 @@ group :test do
   gem "email_reply_parser", "~> 0.5", :require => false
   gem "sanitize", "~> 2.0", :require => false
   gem "escape_utils", "~> 1.0", :require => false
-  gem "github-linguist", "~> 2.10", :require => false
+  gem "rouge", "~> 3.1", :require => false
 end
 
 gemspec :path => "../"

gemfiles/rails_4.gemfile

@@ -20,7 +20,7 @@ group :test do
   gem "email_reply_parser", "~> 0.5", :require => false
   gem "sanitize", "~> 2.0", :require => false
   gem "escape_utils", "~> 1.0", :require => false
-  gem "github-linguist", "~> 2.10", :require => false
+  gem "rouge", "~> 3.1", :require => false
 end
 
 gemspec :path => "../"

gemfiles/rails_5.gemfile

@@ -19,7 +19,7 @@ group :test do
   gem "email_reply_parser", "~> 0.5", :require => false
   gem "sanitize", "~> 2.0", :require => false
   gem "escape_utils", "~> 1.0", :require => false
-  gem "github-linguist", "~> 2.10", :require => false
+  gem "rouge", "~> 3.1", :require => false
 end
 
 gemspec :path => "../"

html-pipeline.gemspec

@@ -1,21 +1,21 @@
-# -*- encoding: utf-8 -*-
-require File.expand_path("../lib/html/pipeline/version", __FILE__)
+
+require File.expand_path('../lib/html/pipeline/version', __FILE__)
 
 Gem::Specification.new do |gem|
-  gem.name          = "html-pipeline"
+  gem.name          = 'html-pipeline'
   gem.version       = HTML::Pipeline::VERSION
-  gem.license       = "MIT"
-  gem.authors       = ["Ryan Tomayko", "Jerry Cheung"]
-  gem.email         = ["[email protected]", "[email protected]"]
-  gem.description   = %q{GitHub HTML processing filters and utilities}
-  gem.summary       = %q{Helpers for processing content through a chain of filters}
-  gem.homepage      = "https://github.com/jch/html-pipeline"
+  gem.license       = 'MIT'
+  gem.authors       = ['Ryan Tomayko', 'Jerry Cheung']
+  gem.email         = ['[email protected]', '[email protected]']
+  gem.description   = 'GitHub HTML processing filters and utilities'
+  gem.summary       = 'Helpers for processing content through a chain of filters'
+  gem.homepage      = 'https://github.com/jch/html-pipeline'
 
-  gem.files         = `git ls-files -z`.split("\x0").reject { |f| f =~ %r(^(test|gemfiles|script)/) }
-  gem.require_paths = ["lib"]
+  gem.files         = `git ls-files -z`.split("\x0").reject { |f| f =~ %r{^(test|gemfiles|script)/} }
+  gem.require_paths = ['lib']
 
-  gem.add_dependency "nokogiri", ">= 1.4"
-  gem.add_dependency "activesupport", ">= 2"
+  gem.add_dependency 'activesupport', '>= 2'
+  gem.add_dependency 'nokogiri', '>= 1.4'
 
   gem.post_install_message = <<msg
 -------------------------------------------------

lib/html/pipeline.rb

@@ -1,5 +1,5 @@
-require "nokogiri"
-require "active_support/xml_mini/nokogiri" # convert Documents to hashes
+require 'nokogiri'
+require 'active_support/xml_mini/nokogiri' # convert Documents to hashes
 
 module HTML
   # GitHub HTML processing filters and utilities. This module includes a small
@@ -43,12 +43,12 @@ class Pipeline
     autoload :TableOfContentsFilter, 'html/pipeline/toc_filter'
     autoload :TextFilter,            'html/pipeline/text_filter'
 
-    class MissingDependencyError < LoadError; end
+    class MissingDependencyError < RuntimeError; end
     def self.require_dependency(name, requirer)
       require name
     rescue LoadError => e
       raise MissingDependencyError,
-        "Missing dependency '#{name}' for #{requirer}. See README.md for details.\n#{e.class.name}: #{e}"
+            "Missing dependency '#{name}' for #{requirer}. See README.md for details.\n#{e.class.name}: #{e}"
     end
 
     # Our DOM implementation.
@@ -85,7 +85,7 @@ class << self
     end
 
     def initialize(filters, default_context = {}, result_class = nil)
-      raise ArgumentError, "default_context cannot be nil" if default_context.nil?
+      raise ArgumentError, 'default_context cannot be nil' if default_context.nil?
       @filters = filters.flatten.freeze
       @default_context = default_context.freeze
       @result_class = result_class || Hash
@@ -108,9 +108,9 @@ def call(html, context = {}, result = nil)
       context = @default_context.merge(context)
       context = context.freeze
       result ||= @result_class.new
-      payload = default_payload :filters => @filters.map(&:name),
-        :context => context, :result => result
-      instrument "call_pipeline.html_pipeline", payload do
+      payload = default_payload filters: @filters.map(&:name),
+                                context: context, result: result
+      instrument 'call_pipeline.html_pipeline', payload do
         result[:output] =
           @filters.inject(html) do |doc, filter|
             perform_filter(filter, doc, context, result)
@@ -125,9 +125,9 @@ def call(html, context = {}, result = nil)
     #
     # Returns the result of the filter.
     def perform_filter(filter, doc, context, result)
-      payload = default_payload :filter => filter.name,
-        :context => context, :result => result
-      instrument "call_filter.html_pipeline", payload do
+      payload = default_payload filter: filter.name,
+                                context: context, result: result
+      instrument 'call_filter.html_pipeline', payload do
         filter.call(doc, context, result)
       end
     end
@@ -178,13 +178,13 @@ def instrument(event, payload = nil)
     #
     # Returns a Hash.
     def default_payload(payload = {})
-      {:pipeline => instrumentation_name}.merge(payload)
+      { pipeline: instrumentation_name }.merge(payload)
     end
   end
 end
 
 # XXX nokogiri monkey patches for 1.8
-if not ''.respond_to?(:force_encoding)
+unless ''.respond_to?(:force_encoding)
   class Nokogiri::XML::Node
     # Work around an issue with utf-8 encoded data being erroneously converted to
     # ... some other shit when replacing text nodes. See 'utf-8 output 2' in
@@ -196,8 +196,8 @@ def replace_with_encoding_fix(replacement)
       replace_without_encoding_fix(replacement)
     end
 
-    alias_method :replace_without_encoding_fix, :replace
-    alias_method :replace, :replace_with_encoding_fix
+    alias replace_without_encoding_fix replace
+    alias replace replace_with_encoding_fix
 
     def swap(replacement)
       replace(replacement)