Add NullI18n and IceCube::I18n to remove runtime dependency

Author: isaacseymour

config/locales/en.yml

@@ -114,3 +114,65 @@ en:
         until: '%{rest} %{current}'
         count: '%{rest} %{current}'
         default: '%{rest} %{current}'
+
+  date:
+    abbr_day_names:
+    - Sun
+    - Mon
+    - Tue
+    - Wed
+    - Thu
+    - Fri
+    - Sat
+    abbr_month_names:
+    -
+    - Jan
+    - Feb
+    - Mar
+    - Apr
+    - May
+    - Jun
+    - Jul
+    - Aug
+    - Sep
+    - Oct
+    - Nov
+    - Dec
+    day_names:
+    - Sunday
+    - Monday
+    - Tuesday
+    - Wednesday
+    - Thursday
+    - Friday
+    - Saturday
+    formats:
+      default: "%Y-%m-%d"
+      long: "%B %d, %Y"
+      short: "%b %d"
+    month_names:
+    -
+    - January
+    - February
+    - March
+    - April
+    - May
+    - June
+    - July
+    - August
+    - September
+    - October
+    - November
+    - December
+    order:
+    - :year
+    - :month
+    - :day
+
+  time:
+    am: am
+    formats:
+      default: "%a, %d %b %Y %H:%M:%S %z"
+      long: "%B %d, %Y %H:%M"
+      short: "%d %b %H:%M"
+    pm: pm

ice_cube.gemspec

@@ -21,5 +21,5 @@ Gem::Specification.new do |s|
   s.add_development_dependency('rspec', '~> 2.12.0')
   s.add_development_dependency('activesupport', '>= 3.0.0')
   s.add_development_dependency('tzinfo')
-  s.add_runtime_dependency('i18n')
+  s.add_development_dependency('i18n')
 end

lib/ice_cube.rb

@@ -1,8 +1,8 @@
 require 'date'
 require 'ice_cube/deprecated'
-require 'i18n'
+require 'ice_cube/i18n'
 
-I18n.load_path += Dir[File.expand_path('../../config/locales/*{rb,yml}', __FILE__)]
+IceCube::I18n.detect_backend!
 
 module IceCube
 
@@ -72,7 +72,7 @@ module Validations
   # Defines the format used by IceCube when printing out Schedule#to_s.
   # Defaults to '%B %e, %Y'
   def self.to_s_time_format
-    I18n.t("ice_cube.date.formats.default")
+    IceCube::I18n.t("ice_cube.date.formats.default")
   end
 
   # Sets the format used by IceCube when printing out Schedule#to_s.

lib/ice_cube/builders/ical_builder.rb

@@ -32,15 +32,15 @@ def to_s
 
     def self.ical_utc_format(time)
       time = time.dup.utc
-      I18n.l(time, format: '%Y%m%dT%H%M%SZ') # utc time
+      IceCube::I18n.l(time, format: '%Y%m%dT%H%M%SZ') # utc time
     end
 
     def self.ical_format(time, force_utc)
       time = time.dup.utc if force_utc
       if time.utc?
-        ":#{I18n.l(time, format: '%Y%m%dT%H%M%SZ')}" # utc time
+        ":#{IceCube::I18n.l(time, format: '%Y%m%dT%H%M%SZ')}" # utc time
       else
-        ";TZID=#{I18n.l(time, format: '%Z:%Y%m%dT%H%M%S')}" # local time specified
+        ";TZID=#{IceCube::I18n.l(time, format: '%Z:%Y%m%dT%H%M%S')}" # local time specified
       end
     end
 

lib/ice_cube/builders/string_builder.rb

@@ -21,8 +21,8 @@ def to_s
           next if segments.empty?
           current = self.class.sentence(segments)
         end
-        f = I18n.t('ice_cube.string.format')[type] ? type : 'default'
-        string = I18n.t("ice_cube.string.format.#{f}", rest: string, current: current)
+        f = IceCube::I18n.t('ice_cube.string.format')[type] ? type : 'default'
+        string = IceCube::I18n.t("ice_cube.string.format.#{f}", rest: string, current: current)
       end
       string
     end
@@ -43,8 +43,8 @@ def sentence(array)
         case array.length
         when 0 ; ''
         when 1 ; array[0].to_s
-        when 2 ; "#{array[0]}#{I18n.t('ice_cube.array.two_words_connector')}#{array[1]}"
-        else ; "#{array[0...-1].join(I18n.t('ice_cube.array.words_connector'))}#{I18n.t('ice_cube.array.last_word_connector')}#{array[-1]}"
+        when 2 ; "#{array[0]}#{IceCube::I18n.t('ice_cube.array.two_words_connector')}#{array[1]}"
+        else ; "#{array[0...-1].join(IceCube::I18n.t('ice_cube.array.words_connector'))}#{IceCube::I18n.t('ice_cube.array.last_word_connector')}#{array[-1]}"
         end
       end
 
@@ -53,18 +53,18 @@ def nice_number(number)
       end
 
       def ordinalize(number)
-        I18n.t('ice_cube.integer.ordinal', number: number, ordinal: ordinal(number))
+        IceCube::I18n.t('ice_cube.integer.ordinal', number: number, ordinal: ordinal(number))
       end
 
       def literal_ordinal(number)
-        I18n.t("ice_cube.integer.literal_ordinals")[number]
+        IceCube::I18n.t("ice_cube.integer.literal_ordinals")[number]
       end
 
       def ordinal(number)
-        ord = I18n.t("ice_cube.integer.ordinals")[number] ||
-          I18n.t("ice_cube.integer.ordinals")[number % 10] ||
-          I18n.t('ice_cube.integer.ordinals')[:default]
-        number >= 0 ? ord : I18n.t("ice_cube.integer.negative", ordinal: ord)
+        ord = IceCube::I18n.t("ice_cube.integer.ordinals")[number] ||
+          IceCube::I18n.t("ice_cube.integer.ordinals")[number % 10] ||
+          IceCube::I18n.t('ice_cube.integer.ordinals')[:default]
+        number >= 0 ? ord : IceCube::I18n.t("ice_cube.integer.negative", ordinal: ord)
       end
 
     end

lib/ice_cube/i18n.rb

@@ -0,0 +1,24 @@
+module IceCube
+  module I18n
+    def self.t(*args)
+      backend.t(*args)
+    end
+
+    def self.l(*args)
+      backend.l(*args)
+    end
+
+    def self.backend
+      @backend
+    end
+
+    def self.detect_backend!
+      require 'i18n'
+      ::I18n.load_path += Dir[File.expand_path('../../../config/locales/*{rb,yml}', __FILE__)]
+      @backend = ::I18n
+    rescue LoadError
+      require 'ice_cube/null_i18n'
+      @backend = NullI18n
+    end
+  end
+end

lib/ice_cube/null_i18n.rb

@@ -0,0 +1,28 @@
+require 'yaml'
+
+module IceCube
+  module NullI18n
+    def self.t(key, options = {})
+      base = key.to_s.split('.').reduce(config) { |hash, current_key| hash[current_key] }
+
+      base = base[options[:count] == 1 ? "one" : "other"] if options[:count]
+
+      if base.is_a?(Hash)
+        return base.each_with_object({}) do |(key, value), hash|
+          hash[key.is_a?(String) ? key.to_sym : key] = value
+        end
+      end
+
+      options.reduce(base) { |result, (find, replace)| result.gsub("%{#{find}}", "#{replace}") }
+    end
+
+    def self.l(date_or_time, options = {})
+      return date_or_time.strftime(options[:format]) if options[:format]
+      date_or_time.strftime(t('ice_cube.date.formats.default'))
+    end
+
+    def self.config
+      @config ||= YAML.load(File.read(File.join(File.dirname(__FILE__), '..', '..', 'config', 'locales', 'en.yml')))['en']
+    end
+  end
+end

lib/ice_cube/schedule.rb

@@ -313,14 +313,14 @@ def last(n = nil)
     def to_s
       pieces = []
       rd = recurrence_times_with_start_time - extimes
-      pieces.concat rd.sort.map { |t| I18n.l(t, format: IceCube.to_s_time_format) }
+      pieces.concat rd.sort.map { |t| IceCube::I18n.l(t, format: IceCube.to_s_time_format) }
       pieces.concat rrules.map  { |t| t.to_s }
-      pieces.concat exrules.map { |t| I18n.t('ice_cube.not', target: t.to_s) }
+      pieces.concat exrules.map { |t| IceCube::I18n.t('ice_cube.not', target: t.to_s) }
       pieces.concat extimes.sort.map { |t|
-        target = I18n.l(t, format: IceCube.to_s_time_format)
-        I18n.t('ice_cube.not_on', target: target)
+        target = IceCube::I18n.l(t, format: IceCube.to_s_time_format)
+        IceCube::I18n.t('ice_cube.not_on', target: target)
       }
-      pieces.join(I18n.t('ice_cube.pieces_connector'))
+      pieces.join(IceCube::I18n.t('ice_cube.pieces_connector'))
     end
 
     # Serialize this schedule to_ical

lib/ice_cube/validations/count.rb

@@ -51,7 +51,7 @@ def build_ical(builder)
 
       StringBuilder.register_formatter(:count) do |segments|
         count = segments.first
-        I18n.t('ice_cube.times', count: count)
+        IceCube::I18n.t('ice_cube.times', count: count)
       end
 
     end

lib/ice_cube/validations/daily_interval.rb

@@ -35,7 +35,7 @@ def validate(step_time, schedule)
       end
 
       def build_s(builder)
-        builder.base = I18n.t('ice_cube.each_day', count: interval)
+        builder.base = IceCube::I18n.t('ice_cube.each_day', count: interval)
       end
 
       def build_hash(builder)