1 files changed, 67 insertions, 0 deletions
diff --git a/railties/lib/rails/tasks/misc.rake b/railties/lib/rails/tasks/misc.rake
new file mode 100644
index 0000000000..fb2fc31dc1
--- /dev/null
+++ b/railties/lib/rails/tasks/misc.rake
@@ -0,0 +1,67 @@
+task :default => :test
+task :environment do
+  $rails_rake_task = true
+  require(File.join(RAILS_ROOT, 'config', 'environment'))
+end
+
+task :rails_env do
+  unless defined? RAILS_ENV
+    RAILS_ENV = ENV['RAILS_ENV'] ||= 'development'
+  end
+end
+
+desc 'Generate a crytographically secure secret key. This is typically used to generate a secret for cookie sessions.'
+task :secret do
+  require 'active_support/secure_random'
+  puts ActiveSupport::SecureRandom.hex(64)
+end
+
+namespace :time do
+  namespace :zones do
+    desc 'Displays names of all time zones recognized by the Rails TimeZone class, grouped by offset. Results can be filtered with optional OFFSET parameter, e.g., OFFSET=-6'
+    task :all do
+      build_time_zone_list(:all)
+    end
+    
+    desc 'Displays names of US time zones recognized by the Rails TimeZone class, grouped by offset. Results can be filtered with optional OFFSET parameter, e.g., OFFSET=-6'
+    task :us do
+      build_time_zone_list(:us_zones)
+    end
+    
+    desc 'Displays names of time zones recognized by the Rails TimeZone class with the same offset as the system local time'
+    task :local do
+      require 'active_support'
+      require 'active_support/time'
+      jan_offset = Time.now.beginning_of_year.utc_offset
+      jul_offset = Time.now.beginning_of_year.change(:month => 7).utc_offset
+      offset = jan_offset < jul_offset ? jan_offset : jul_offset
+      build_time_zone_list(:all, offset)
+    end
+    
+    # to find UTC -06:00 zones, OFFSET can be set to either -6, -6:00 or 21600
+    def build_time_zone_list(method, offset = ENV['OFFSET'])
+      require 'active_support'
+      require 'active_support/time'
+      if offset
+        offset = if offset.to_s.match(/(\+|-)?(\d+):(\d+)/)
+          sign = $1 == '-' ? -1 : 1
+          hours, minutes = $2.to_f, $3.to_f
+          ((hours * 3600) + (minutes.to_f * 60)) * sign
+        elsif offset.to_f.abs <= 13
+          offset.to_f * 3600
+        else
+          offset.to_f
+        end
+      end
+      previous_offset = nil
+      ActiveSupport::TimeZone.__send__(method).each do |zone|
+        if offset.nil? || offset == zone.utc_offset
+          puts "\n* UTC #{zone.formatted_offset} *" unless zone.utc_offset == previous_offset
+          puts zone.name
+          previous_offset = zone.utc_offset
+        end
+      end
+      puts "\n"
+    end
+  end
+end