Make sass-rails an wrapper for sassc-rails to allow a smooth upgrade

Gemfile

@@ -2,9 +2,3 @@ source "https://rubygems.org"
 
 # Specify your gem's dependencies in sass-rails.gemspec
 gemspec
-
-gem "rails", github: "rails/rails"
-gem "arel", github: "rails/arel"
-gem "rack", github: "rack/rack"
-gem "sprockets", github: "rails/sprockets", branch: "master"
-gem "sprockets-rails", github: "rails/sprockets-rails", branch: "master"

MIT-LICENSE

@@ -1,4 +1,4 @@
-Copyright (c) 2011-2016 Christopher Eppstein
+Copyright (c) 2011-2019 Christopher Eppstein
 
 Permission is hereby granted, free of charge, to any person obtaining
 a copy of this software and associated documentation files (the

Rakefile

@@ -1,14 +1,2 @@
 require 'bundler'
 Bundler::GemHelper.install_tasks
-
-require 'rake/testtask'
-
-Rake::TestTask.new(:test) do |t|
-  t.libs << 'lib'
-  t.libs << 'test'
-  t.pattern = 'test/**/*_test.rb'
-  t.verbose = false
-end
-
-desc 'Default: run unit tests.'
-task default: :test

lib/sass-rails.rb

@@ -1 +1 @@
-require 'sass/rails'
+require 'sassc/rails'

lib/sass/rails.rb

@@ -1,9 +1 @@
-module Sass
-  module Rails
-    autoload :Logger, 'sass/rails/logger'
-  end
-end
-
-require 'sass/rails/version'
-require 'sass/rails/importer'
-require 'sass/rails/railtie'
+require 'sassc/rails'

lib/sass/rails/importer.rb

@@ -1,158 +1,5 @@
-require 'active_support/deprecation/reporting'
-require 'sass/importers'
-require 'sprockets/file_reader'
-require 'sprockets/erb_processor'
-require 'sprockets/processor_utils'
+# frozen_string_literal: true
 
-module Sass
-  module Rails
-    class SassImporter < Sass::Importers::Filesystem
-      module Globbing
-        GLOB = /(\A|\/)(\*|\*\*\/\*)\z/
+require "active_support/deprecation"
 
-        def find_relative(name, base, options)
-          if options[:sprockets] && m = name.match(GLOB)
-            path = name.sub(m[0], "")
-            base = File.expand_path(path, File.dirname(base))
-            glob_imports(base, m[2], options)
-          else
-            super
-          end
-        end
-
-        def find(name, options)
-          # globs must be relative
-          return if name =~ GLOB
-          super
-        end
-
-        private
-          def glob_imports(base, glob, options)
-            contents = ""
-            context = options[:sprockets][:context]
-            each_globbed_file(base, glob, context) do |filename|
-              next if filename == options[:filename]
-              contents << "@import #{filename.inspect};\n"
-            end
-            return nil if contents == ""
-            Sass::Engine.new(contents, options.merge(
-              :filename => base,
-              :importer => self,
-              :syntax => :scss
-            ))
-          end
-
-          def each_globbed_file(base, glob, context)
-            raise ArgumentError unless glob == "*" || glob == "**/*"
-
-            exts = extensions.keys.map { |ext| Regexp.escape(".#{ext}") }.join("|")
-            sass_re = Regexp.compile("(#{exts})$")
-
-            context.depend_on(base)
-
-            Dir["#{base}/#{glob}"].sort.each do |path|
-              if File.directory?(path)
-                context.depend_on(path)
-              elsif sass_re =~ path
-                yield path
-              end
-            end
-          end
-      end
-
-      module ERB
-        def extensions
-          {
-            'css.erb'  => :scss_erb,
-            'scss.erb' => :scss_erb,
-            'sass.erb' => :sass_erb
-          }.merge(super)
-        end
-
-        def erb_extensions
-          {
-            :scss_erb => :scss,
-            :sass_erb => :sass
-          }
-        end
-
-        def find_relative(*args)
-          process_erb_engine(super)
-        end
-
-        def find(*args)
-          process_erb_engine(super)
-        end
-
-        private
-          def process_erb_engine(engine)
-            if engine && engine.options[:sprockets] && syntax = erb_extensions[engine.options[:syntax]]
-              context = engine.options[:sprockets][:context]
-
-              input = {
-                filename: engine.options[:filename],
-                environment: context.environment,
-                content_type: "text/#{syntax}",
-                metadata: {}
-              }
-
-              processors = [Sprockets::ERBProcessor, Sprockets::FileReader]
-
-              result = Sprockets::ProcessorUtils.call_processors(processors, input)
-
-              Sass::Engine.new(result[:data], engine.options.merge(:syntax => syntax))
-            else
-              engine
-            end
-          end
-      end
-
-      module Deprecated
-        def extensions
-          {
-            'css.scss'     => :scss,
-            'css.sass'     => :sass,
-            'css.scss.erb' => :scss_erb,
-            'css.sass.erb' => :sass_erb
-          }.merge(super)
-        end
-
-        def find_relative(*args)
-          deprecate_extra_css_extension(super)
-        end
-
-        def find(*args)
-          deprecate_extra_css_extension(super)
-        end
-
-        private
-          def deprecate_extra_css_extension(engine)
-            if engine && filename = engine.options[:filename]
-              if filename.end_with?('.css.scss')
-                msg = "Extra .css in SCSS file is unnecessary. Rename #{filename} to #{filename.sub('.css.scss', '.scss')}."
-              elsif filename.end_with?('.css.sass')
-                msg = "Extra .css in SASS file is unnecessary. Rename #{filename} to #{filename.sub('.css.sass', '.sass')}."
-              elsif filename.end_with?('.css.scss.erb')
-                msg = "Extra .css in SCSS/ERB file is unnecessary. Rename #{filename} to #{filename.sub('.css.scss.erb', '.scss.erb')}."
-              elsif filename.end_with?('.css.sass.erb')
-                msg = "Extra .css in SASS/ERB file is unnecessary. Rename #{filename} to #{filename.sub('.css.sass.erb', '.sass.erb')}."
-              end
-
-              ActiveSupport::Deprecation.warn(msg) if msg
-            end
-
-            engine
-          end
-      end
-
-      include ERB
-      include Deprecated
-      include Globbing
-
-      # Allow .css files to be @import'd
-      def extensions
-        { 'css' => :scss }.merge(super)
-      end
-    end
-  end
-end
+ActiveSupport::Deprecation.warn "Sass::Rails::Importer has been removed, please use SassC::Rails::Importer instead."