Add bin and edit workflow

bin/gems/sass-embedded-1.83.4-x86_64-linux-gnu/lib/sass/compiler/connection.rb

@@ -0,0 +1,89 @@
+# frozen_string_literal: true
+
+require 'open3'
+
+require_relative '../../../ext/sass/cli'
+
+module Sass
+  class Compiler
+    # The stdio based {Connection} between the {Dispatcher} and the compiler.
+    #
+    # It runs the `sass --embedded` command.
+    class Connection
+      def initialize
+        @mutex = Mutex.new
+        @stdin, @stdout, @stderr, @wait_thread = Open3.popen3(*CLI::COMMAND, '--embedded', chdir: __dir__)
+
+        @stdin.binmode
+
+        # # https://dart.dev/tools/dart-devtools
+        # if 'dart' == File.basename(CLI::COMMAND.first, '.exe') && CLI::COMMAND.include?('--observe')
+        #   Kernel.warn(@stdout.readline, uplevel: 0)
+        #   Kernel.warn(@stdout.readline, uplevel: 0)
+        # end
+
+        @stdout.binmode
+
+        @wait_thread.name = "sass-embedded-process-waiter-#{id}"
+      end
+
+      def id
+        @wait_thread.pid
+      end
+
+      def listen(dispatcher)
+        Thread.new do
+          Thread.current.name = "sass-embedded-process-stdout-poller-#{id}"
+          loop do
+            length = Varint.read(@stdout)
+            id = Varint.read(@stdout)
+            proto = @stdout.read(length - Varint.length(id))
+            dispatcher.receive_proto(id, proto)
+          end
+        rescue IOError, Errno::EBADF, Errno::EPROTO => e
+          dispatcher.error(e)
+          @mutex.synchronize do
+            @stdout.close
+          end
+        end
+
+        Thread.new do
+          Thread.current.name = "sass-embedded-process-stderr-poller-#{id}"
+          loop do
+            Kernel.warn(@stderr.readline, uplevel: 0)
+          end
+        rescue IOError, Errno::EBADF
+          @mutex.synchronize do
+            @stderr.close
+          end
+        end
+      end
+
+      def close
+        @mutex.synchronize do
+          @stdin.close
+          @wait_thread.join
+          @stdout.close
+          @stderr.close
+        end
+      end
+
+      def closed?
+        @mutex.synchronize do
+          @stdin.closed? && !@wait_thread.alive?
+        end
+      end
+
+      def write(id, proto)
+        buffer = []
+        Varint.write(buffer, Varint.length(id) + proto.length)
+        Varint.write(buffer, id)
+        @mutex.synchronize do
+          @stdin.write(buffer.pack('C*'), proto)
+        end
+      end
+    end
+
+    private_constant :Connection
+  end
+end