Add class Diversipub::App

exe/diversipub

@@ -1,4 +1,25 @@
 #!/usr/bin/env ruby
 # frozen_string_literal: true
 
-require 'diversipub'
+gem_name = 'diversipub'
+
+begin
+  require gem_name
+rescue LoadError
+  lib = File.expand_path('../lib', __dir__).freeze
+  file = File.join lib, "#{gem_name}.rb"
+  $LOAD_PATH.unshift lib if File.file?(file) && !$LOAD_PATH.include?(lib)
+  require gem_name
+end
+
+main = Diversipub::Main.new(
+  program_name: $PROGRAM_NAME,
+  argv: ARGV,
+  env: ENV,
+  stdin: $stdin,
+  stdout: $stdout,
+  stderr: $stderr,
+)
+
+trap('INT') { main.finish } if Signal.list['INT']
+exit main.run

lib/diversipub.rb

@@ -1,3 +1,4 @@
 # frozen_string_literal: true
 
+require_relative 'diversipub/main'
 require_relative 'diversipub/version'

lib/diversipub/main.rb

@@ -0,0 +1,54 @@
+# frozen_string_literal: true
+
+module Diversipub
+  ##
+  # The whole application runner.
+  #
+  class Main
+    attr_reader :program_name, :argv, :env, :stdin, :stdout, :stderr
+
+    def initialize(program_name:, argv:, env:, stdin:, stdout:, stderr:)
+      self.program_name = program_name
+      self.argv = argv
+      self.env = env
+      self.stdin = stdin
+      self.stdout = stdout
+      self.stderr = stderr
+      @running = true
+    end
+
+    def run
+      p program_name
+      p argv
+      p env
+      p stdin
+      p stdout
+      p stderr
+      sleep 1 while @running
+      true
+    end
+
+    def finish
+      puts 'finishing'
+      @running = false
+    end
+
+  private
+
+    attr_writer :stdin, :stdout, :stderr
+
+    def program_name=(program_name)
+      @program_name = String(program_name).freeze
+    end
+
+    def argv=(argv)
+      @argv = [*argv].map { |arg| String(arg).freeze }.freeze
+    end
+
+    def env=(env)
+      @env = [*env].to_h do |key, value|
+        [String(key).freeze, String(value).freeze]
+      end.freeze
+    end
+  end
+end