feat: use zeitwerk for autoloading (#47)

* feat: use zeitwerk for autoloading

* fix memoizing of postprocessor/extractor

Gemfile.lock

@@ -10,6 +10,7 @@ PATH
       nokogiri (>= 1.10, < 2.0)
       reverse_markdown (~> 1.3)
       sanitize (~> 5.0)
+      zeitwerk
 
 GEM
   remote: https://rubygems.org/
@@ -26,7 +27,7 @@ GEM
     crass (1.0.4)
     diff-lcs (1.3)
     docile (1.3.2)
-    faraday (0.16.2)
+    faraday (0.17.0)
       multipart-post (>= 1.2, < 3)
     faraday_middleware (0.13.1)
       faraday (>= 0.7.4, < 1.0)
@@ -42,25 +43,25 @@ GEM
       mini_portile2 (~> 2.4.0)
     nokogumbo (2.0.1)
       nokogiri (~> 1.8, >= 1.8.4)
-    parallel (1.17.0)
+    parallel (1.18.0)
     parser (2.6.5.0)
       ast (~> 2.4.0)
     rainbow (3.0.0)
     reverse_markdown (1.3.0)
       nokogiri
-    rspec (3.8.0)
-      rspec-core (~> 3.8.0)
-      rspec-expectations (~> 3.8.0)
-      rspec-mocks (~> 3.8.0)
-    rspec-core (3.8.2)
-      rspec-support (~> 3.8.0)
-    rspec-expectations (3.8.5)
+    rspec (3.9.0)
+      rspec-core (~> 3.9.0)
+      rspec-expectations (~> 3.9.0)
+      rspec-mocks (~> 3.9.0)
+    rspec-core (3.9.0)
+      rspec-support (~> 3.9.0)
+    rspec-expectations (3.9.0)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.8.0)
-    rspec-mocks (3.8.2)
+      rspec-support (~> 3.9.0)
+    rspec-mocks (3.9.0)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.8.0)
-    rspec-support (3.8.3)
+      rspec-support (~> 3.9.0)
+    rspec-support (3.9.0)
     rubocop (0.75.0)
       jaro_winkler (~> 1.5.1)
       parallel (~> 1.10)
@@ -88,6 +89,7 @@ GEM
     unicode-display_width (1.6.0)
     vcr (5.0.0)
     yard (0.9.20)
+    zeitwerk (2.2.0)
 
 PLATFORMS
   ruby

html2rss.gemspec

@@ -12,7 +12,7 @@ Gem::Specification.new do |spec|
   spec.description   = 'Give the URL to scrape and some CSS selectors. Get a RSS::Rss instance in return.'
   spec.homepage      = 'https://github.com/gildesmarais/html2rss'
   spec.license       = 'MIT'
-  spec.required_ruby_version = '>= 2.4.0'
+  spec.required_ruby_version = '>= 2.4.4'
 
   if spec.respond_to?(:metadata)
     spec.metadata['allowed_push_host'] = 'https://rubygems.org'
@@ -37,6 +37,7 @@ Gem::Specification.new do |spec|
   spec.add_dependency 'nokogiri', '>= 1.10', '< 2.0'
   spec.add_dependency 'reverse_markdown', '~> 1.3'
   spec.add_dependency 'sanitize', '~> 5.0'
+  spec.add_dependency 'zeitwerk'
   spec.add_development_dependency 'bundler', '~> 1.16'
   spec.add_development_dependency 'byebug'
   spec.add_development_dependency 'rspec', '~> 3.0'

lib/html2rss.rb

@@ -1,7 +1,8 @@
-require 'html2rss/config'
-require 'html2rss/feed_builder'
-require 'html2rss/version'
-require 'html2rss/utils'
+require 'zeitwerk'
+
+loader = Zeitwerk::Loader.for_gem
+loader.setup
+
 require 'yaml'
 
 ##

lib/html2rss/attribute_post_processors.rb

@@ -1,19 +1,15 @@
-require_relative 'attribute_post_processors/html_to_markdown'
-require_relative 'attribute_post_processors/parse_time'
-require_relative 'attribute_post_processors/parse_uri'
-require_relative 'attribute_post_processors/sanitize_html'
-require_relative 'attribute_post_processors/substring'
-require_relative 'attribute_post_processors/template'
-
 module Html2rss
   ##
   # Provides a namespace for attribute post processors.
   module AttributePostProcessors
     def self.get_processor(name)
-      camel_cased_name = name.split('_').map(&:capitalize).join
-      class_name = ['Html2rss', 'AttributePostProcessors', camel_cased_name].join('::')
+      @get_processor ||= Hash.new do |processors, key|
+        camel_cased_name = key.split('_').map(&:capitalize).join
+        class_name = ['Html2rss', 'AttributePostProcessors', camel_cased_name].join('::')
+        processors[key] = Object.const_get(class_name)
+      end
 
-      Object.const_get(class_name)
+      @get_processor[name]
     end
   end
 end

lib/html2rss/feed_builder.rb

@@ -1,5 +1,4 @@
 require 'rss'
-require_relative 'item'
 
 module Html2rss
   ##

lib/html2rss/item.rb

@@ -1,9 +1,6 @@
 require 'faraday'
 require 'faraday_middleware'
-require 'open-uri'
 require 'nokogiri'
-require_relative 'item_extractors'
-require_relative 'attribute_post_processors'
 
 module Html2rss
   ##

lib/html2rss/item_extractors.rb

@@ -1,23 +1,17 @@
-require_relative 'item_extractors/attribute'
-require_relative 'item_extractors/current_time'
-require_relative 'item_extractors/href'
-require_relative 'item_extractors/html'
-require_relative 'item_extractors/static'
-require_relative 'item_extractors/text'
-
 module Html2rss
   ##
   # Provides a namespace for item extractors.
   module ItemExtractors
-    DEFAULT = 'text'.freeze
+    DEFAULT = 'Text'.freeze
 
     def self.get_extractor(name)
-      @extractors = Hash.new do |hash, key|
-        camel_cased_name = key.split('_').map(&:capitalize).join
+      @get_extractor ||= Hash.new do |extractors, key|
+        camel_cased_name = (key || DEFAULT).split('_').map(&:capitalize).join
         class_name = ['Html2rss', 'ItemExtractors', camel_cased_name].join('::')
+        extractors[key] = Object.const_get(class_name)
+      end
 
-        hash[key] = Object.const_get(class_name)
-      end[name || DEFAULT]
+      @get_extractor[name]
     end
 
     ##