From b85268434d072894d3ba62521689cf44f2cea6d2 Mon Sep 17 00:00:00 2001
From: Alex Kotov <kotovalexarian@gmail.com>
Date: Wed, 10 May 2023 14:20:56 +0400
Subject: [PATCH] Save gem root

---
 exe/diversipub         |  4 +++-
 lib/diversipub/main.rb | 12 ++++++++++--
 2 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/exe/diversipub b/exe/diversipub
index 009e15c..32dc4db 100755
--- a/exe/diversipub
+++ b/exe/diversipub
@@ -2,11 +2,12 @@
 # frozen_string_literal: true
 
 gem_name = 'diversipub'
+gem_root = File.expand_path('..', __dir__).freeze
 
 begin
   require gem_name
 rescue LoadError
-  lib = File.expand_path('../lib', __dir__).freeze
+  lib = File.join(gem_root, 'lib').freeze
   file = File.join lib, "#{gem_name}.rb"
   $LOAD_PATH.unshift lib if File.file?(file) && !$LOAD_PATH.include?(lib)
   require gem_name
@@ -56,6 +57,7 @@ $stdout.sync = true
 $stderr.sync = true
 
 main = Diversipub::Main.new(
+  gem_root: gem_root,
   pwd: Pathname.pwd,
   program_name: $PROGRAM_NAME,
   argv: ARGV,
diff --git a/lib/diversipub/main.rb b/lib/diversipub/main.rb
index b0a719f..780dbc2 100644
--- a/lib/diversipub/main.rb
+++ b/lib/diversipub/main.rb
@@ -5,15 +5,18 @@ module Diversipub
   # The whole application runner.
   #
   class Main
-    attr_reader :pwd, :program_name, :argv, :env, :stdin, :stdout, :stderr
+    attr_reader :gem_root, :pwd, :program_name, :argv, :env,
+                :stdin, :stdout, :stderr
 
-    def initialize(pwd:,
+    def initialize(gem_root:,
+                   pwd:,
                    program_name:,
                    argv:,
                    env:,
                    stdin:,
                    stdout:,
                    stderr:)
+      self.gem_root = gem_root
       self.pwd = pwd
       self.program_name = program_name
       self.argv = argv
@@ -25,6 +28,7 @@ module Diversipub
     end
 
     def run
+      p gem_root
       p pwd
       p program_name
       p argv
@@ -51,6 +55,10 @@ module Diversipub
 
     attr_writer :stdin, :stdout, :stderr
 
+    def gem_root=(gem_root)
+      @gem_root = Pathname.new(gem_root).freeze
+    end
+
     def pwd=(pwd)
       @pwd = Pathname.new(pwd).freeze
     end