crew: Remove activesupport gem, implement .blank? logic in lib/convenience_functions (#12081)

* crew: Remove `activesupport` gem

Signed-off-by: SupeChicken666 <me@supechicken666.dev>

* Remove activesupport require lines

Signed-off-by: SupeChicken666 <me@supechicken666.dev>

* Make rubocop happy

Signed-off-by: SupeChicken666 <me@supechicken666.dev>

* Add a comment for `.blank?` methods

Signed-off-by: SupeChicken666 <me@supechicken666.dev>

---------

Signed-off-by: SupeChicken666 <me@supechicken666.dev>

lib/buildsystems/ruby.rb

@@ -5,8 +5,6 @@ require_relative '../package_utils'
 require_relative '../report_buildsystem_methods'
 require_relative '../require_gem'
 
-require_gem('activesupport', 'active_support/core_ext/object/blank')
-
 def check_gem_binary_build_needed(ruby_gem_name = nil, ruby_gem_version = nil)
   puts "Checking to see if gem compile for #{ruby_gem_name} is needed..."
   @extract_dir = "#{ruby_gem_name}.#{Time.now.utc.strftime('%Y%m%d%H%M%S')}.dir"

lib/convenience_functions.rb

@@ -6,6 +6,14 @@ require_relative 'const'
 require_relative 'crewlog'
 require_relative 'downloader'
 
+# Reimplementation of .blank? method from ActiveSupport
+class NilClass; def blank? = true;         end
+class Numeric;  def blank? = false;        end
+class Array;    def blank? = empty?;       end
+class Hash;     def blank? = empty?;       end
+class Symbol;   def blank? = empty?;       end
+class String;   def blank? = strip.empty?; end
+
 class ConvenienceFunctions
   def self.determine_conflicts(pkg_name, filelist = File.join(CREW_META_PATH, "#{pkg_name}.filelist"), exclude_suffix = nil, verbose: false)
     conflicts       = {}

lib/downloader.rb

@@ -6,7 +6,6 @@ require_relative 'color'
 require_relative 'progress_bar'
 require_relative 'require_gem'
 
-require_gem('activesupport', 'active_support/core_ext/object/blank')
 require_gem('ptools')
 
 begin

lib/fixup.rb

@@ -7,7 +7,6 @@ require_relative 'color'
 require_relative 'package'
 require_relative 'require_gem'
 
-require_gem('activesupport', 'active_support/core_ext/object/blank')
 require_gem('highline')
 
 # All needed constants & variables should be defined here in case they