fix compatibilty with tz_info

.rspec

@@ -0,0 +1,3 @@
+--format documentation
+--color
+--require spec_helper

Gemfile

@@ -0,0 +1,8 @@
+source "https://rubygems.org"
+
+git_source(:github) {|repo_name| "https://github.com/#{repo_name}" }
+
+# Specify your gem's dependencies in ri_cal.gemspec
+gemspec
+
+gem 'byebug'

Gemfile.lock

@@ -0,0 +1,47 @@
+PATH
+  remote: .
+  specs:
+    ri_cal (0.8.8)
+      activesupport (> 2.2)
+      tzinfo (> 2.0)
+
+GEM
+  remote: https://rubygems.org/
+  specs:
+    activesupport (6.1.3)
+      concurrent-ruby (~> 1.0, >= 1.0.2)
+      i18n (>= 1.6, < 2)
+      minitest (>= 5.1)
+      tzinfo (~> 2.0)
+      zeitwerk (~> 2.3)
+    byebug (11.1.3)
+    concurrent-ruby (1.1.8)
+    diff-lcs (1.4.4)
+    i18n (1.8.9)
+      concurrent-ruby (~> 1.0)
+    minitest (5.14.3)
+    rake (0.9.6)
+    rspec (2.99.0)
+      rspec-core (~> 2.99.0)
+      rspec-expectations (~> 2.99.0)
+      rspec-mocks (~> 2.99.0)
+    rspec-core (2.99.2)
+    rspec-expectations (2.99.2)
+      diff-lcs (>= 1.1.3, < 2.0)
+    rspec-mocks (2.99.4)
+    tzinfo (2.0.4)
+      concurrent-ruby (~> 1.0)
+    zeitwerk (2.4.2)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  bundler
+  byebug
+  rake (< 10.0)
+  ri_cal!
+  rspec (< 3.0)
+
+BUNDLED WITH
+   2.1.4

Rakefile

@@ -1,69 +1,6 @@
-require 'rubygems'
-require 'rake'
-# require 'jeweler'
+require "bundler/gem_tasks"
+require "rspec/core/rake_task"
 
-begin
-  require 'ad_agency'
-  Jeweler::Tasks.new do |gem|
-    gem.name = "ri_cal"
-    gem.summary = %Q{a new implementation of RFC2445 in Ruby}
-    gem.description = %Q{A new Ruby implementation of RFC2445 iCalendar.
+RSpec::Core::RakeTask.new(:spec)
 
-The existing Ruby iCalendar libraries (e.g. icalendar, vpim) provide for parsing and generating icalendar files,
-but do not support important things like enumerating occurrences of repeating events.
-
-This is a clean-slate implementation of RFC2445.
-
-A Google group for discussion of this library has been set up http://groups.google.com/group/rical_gem
-    }
-    gem.email = "rick.denatale@gmail.com"
-    gem.homepage = "http://github.com/rubyredrick/ri_cal"
-    gem.authors = ["Rick DeNatale"]
-    ['.gitignore', 'performance_data/*', 'sample_ical_files/*', 'website/*', 'config/website.yml'].each do |excl|
-      gem.files.exclude excl
-    end
-    gem.extra_rdoc_files.include %w{History.txt copyrights.txt}
-    # gem.add_development_dependency "thoughtbot-shoulda", ">= 0"
-    # gem is a Gem::Specification... see http://www.rubygems.org/read/chapter/20 for additional settings
-  end
-  Jeweler::GemcutterTasks.new
-  Jeweler::AdAgencyTasks.new
-# rescue LoadError => ex
-#   puts ex
-#   puts "Jeweler (or a dependency) not available. Install it with: gem install jeweler"
-end
-
-require 'rake/testtask'
-Rake::TestTask.new(:test) do |test|
-  test.libs << 'lib' << 'test'
-  test.pattern = 'test/**/test_*.rb'
-  test.verbose = true
-end
-
-begin
-  require 'rcov/rcovtask'
-  Rcov::RcovTask.new do |test|
-    test.libs << 'test'
-    test.pattern = 'test/**/test_*.rb'
-    test.verbose = true
-  end
-rescue LoadError
-  task :rcov do
-    abort "RCov is not available. In order to run rcov, you must: sudo gem install spicycode-rcov"
-  end
-end
-
-Dir['tasks/**/*.rake'].each { |t| load t }
-
-task :default => [:"spec:with_tzinfo_gem", :"spec:with_active_support"]
-
-
-require 'rake/rdoctask'
-Rake::RDocTask.new do |rdoc|
-  version = File.exist?('VERSION') ? File.read('VERSION') : ""
-
-  rdoc.rdoc_dir = 'rdoc'
-  rdoc.title = "ri_cal #{version}"
-  rdoc.rdoc_files.include('README*')
-  rdoc.rdoc_files.include('lib/**/*.rb')
-end
+task :default => :spec

lib/ri_cal/component/t_z_info_timezone.rb

@@ -21,20 +21,20 @@ def initialize(which, this_period, prev_period)
       @abbreviation = this_period.abbreviation
       @rdates = []
     end
-    
+
     def daylight?
       @which == "DAYLIGHT"
     end
-    
+
     def period_local_end(period)
-      (period.local_end || DateTime.parse("99990101T000000")).strftime("%Y%m%dT%H%M%S")
+      (period.local_ends_at&.to_datetime || DateTime.parse("99990101T000000")).strftime("%Y%m%dT%H%M%S")
     end
-    
+
     # This assumes a 1 hour shift which is why we use the previous period local end when
     # possible
     def period_local_start(period)
       shift = daylight? ? Rational(-1, 24) : Rational(1, 24)
-      ((period.local_start || DateTime.parse("16010101T000000")) + shift).strftime("%Y%m%dT%H%M%S")
+      ((period.local_starts_at&.to_datetime || DateTime.parse("16010101T000000")) + shift).strftime("%Y%m%dT%H%M%S")
     end
 
     def add_period(this_period)
@@ -68,7 +68,7 @@ class Periods #:nodoc: all
     def initialize
       @dst_period = @std_period = @previous_period = nil
     end
-    
+
     def empty?
       @periods.nil? || @periods.empty?
     end
@@ -85,7 +85,7 @@ def log_period(period)
       @periods ||= []
       @periods << period unless @periods.include?(period)
     end
-    
+
     def add_period(this_period, force=false)
       if @previous_period || force
         if this_period.dst?
@@ -109,7 +109,7 @@ def export_to(export_stream)
   def initialize(tzinfo_timezone) #:nodoc:
     @tzinfo_timezone = tzinfo_timezone
   end
-  
+
   # convert time from this time zone to utc time
   def local_to_utc(time)
     @tzinfo_timezone.local_to_utc(time.to_ri_cal_ruby_value)
@@ -140,14 +140,14 @@ def export_utc_to(export_stream, utc_start, utc_end) #:nodoc:
     periods = Periods.new
     period = initial_period = tzinfo_timezone.period_for_utc(utc_start)
      #start with the period before the one containing utc_start
-    prev_period = period.utc_start && tzinfo_timezone.period_for_utc(period.utc_start - 1)
+    prev_period = period.starts_at && tzinfo_timezone.period_for_utc(period.starts_at.to_datetime - 1)
     period = prev_period if prev_period
-    while period && period.utc_start && period.utc_start < utc_end
+    while period && period.starts_at && period.starts_at.to_datetime < utc_end
       periods.add_period(period)
-      period = period.utc_end && tzinfo_timezone.period_for_utc(period.utc_end + 1)
+      period = period.ends_at && tzinfo_timezone.period_for_utc(period.ends_at.to_datetime + 1)
     end
     periods.add_period(initial_period, :force) if periods.empty?
     periods.export_to(export_stream)
     export_stream.puts "END:VTIMEZONE\n"
   end
-end
+end