Froze rails gems

[depot.git] / vendor / rails / activesupport / lib / active_support / vendor / tzinfo-0.3.12 / tzinfo / offset_rationals.rb

diff --git a/vendor/rails/activesupport/lib/active_support/vendor/tzinfo-0.3.12/tzinfo/offset_rationals.rb b/vendor/rails/activesupport/lib/active_support/vendor/tzinfo-0.3.12/tzinfo/offset_rationals.rb
new file mode 100644 (file)
index 0000000..b1f10b2
--- /dev/null
+++ b/vendor/rails/activesupport/lib/active_support/vendor/tzinfo-0.3.12/tzinfo/offset_rationals.rb
@@ -0,0 +1,98 @@
+#--
+# Copyright (c) 2006 Philip Ross
+# 
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+# 
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+#++
+
+require 'rational'
+require 'tzinfo/ruby_core_support'
+
+module TZInfo
+  
+  # Provides a method for getting Rationals for a timezone offset in seconds.
+  # Pre-reduced rationals are returned for all the half-hour intervals between
+  # -14 and +14 hours to avoid having to call gcd at runtime.  
+  module OffsetRationals #:nodoc:
+    @@rational_cache = {
+      -50400 => RubyCoreSupport.rational_new!(-7,12), 
+      -48600 => RubyCoreSupport.rational_new!(-9,16),
+      -46800 => RubyCoreSupport.rational_new!(-13,24),
+      -45000 => RubyCoreSupport.rational_new!(-25,48),
+      -43200 => RubyCoreSupport.rational_new!(-1,2),
+      -41400 => RubyCoreSupport.rational_new!(-23,48),
+      -39600 => RubyCoreSupport.rational_new!(-11,24),
+      -37800 => RubyCoreSupport.rational_new!(-7,16),
+      -36000 => RubyCoreSupport.rational_new!(-5,12),
+      -34200 => RubyCoreSupport.rational_new!(-19,48),
+      -32400 => RubyCoreSupport.rational_new!(-3,8),
+      -30600 => RubyCoreSupport.rational_new!(-17,48),
+      -28800 => RubyCoreSupport.rational_new!(-1,3),
+      -27000 => RubyCoreSupport.rational_new!(-5,16),
+      -25200 => RubyCoreSupport.rational_new!(-7,24),
+      -23400 => RubyCoreSupport.rational_new!(-13,48),
+      -21600 => RubyCoreSupport.rational_new!(-1,4),
+      -19800 => RubyCoreSupport.rational_new!(-11,48),
+      -18000 => RubyCoreSupport.rational_new!(-5,24),
+      -16200 => RubyCoreSupport.rational_new!(-3,16),
+      -14400 => RubyCoreSupport.rational_new!(-1,6),
+      -12600 => RubyCoreSupport.rational_new!(-7,48),
+      -10800 => RubyCoreSupport.rational_new!(-1,8),
+       -9000 => RubyCoreSupport.rational_new!(-5,48),
+       -7200 => RubyCoreSupport.rational_new!(-1,12),
+       -5400 => RubyCoreSupport.rational_new!(-1,16),
+       -3600 => RubyCoreSupport.rational_new!(-1,24),
+       -1800 => RubyCoreSupport.rational_new!(-1,48),
+           0 => RubyCoreSupport.rational_new!(0,1),
+        1800 => RubyCoreSupport.rational_new!(1,48),
+        3600 => RubyCoreSupport.rational_new!(1,24),
+        5400 => RubyCoreSupport.rational_new!(1,16),
+        7200 => RubyCoreSupport.rational_new!(1,12),
+        9000 => RubyCoreSupport.rational_new!(5,48),
+       10800 => RubyCoreSupport.rational_new!(1,8),
+       12600 => RubyCoreSupport.rational_new!(7,48),
+       14400 => RubyCoreSupport.rational_new!(1,6),
+       16200 => RubyCoreSupport.rational_new!(3,16),
+       18000 => RubyCoreSupport.rational_new!(5,24),
+       19800 => RubyCoreSupport.rational_new!(11,48),
+       21600 => RubyCoreSupport.rational_new!(1,4),
+       23400 => RubyCoreSupport.rational_new!(13,48),
+       25200 => RubyCoreSupport.rational_new!(7,24),
+       27000 => RubyCoreSupport.rational_new!(5,16),
+       28800 => RubyCoreSupport.rational_new!(1,3),
+       30600 => RubyCoreSupport.rational_new!(17,48),
+       32400 => RubyCoreSupport.rational_new!(3,8),
+       34200 => RubyCoreSupport.rational_new!(19,48),
+       36000 => RubyCoreSupport.rational_new!(5,12),
+       37800 => RubyCoreSupport.rational_new!(7,16),
+       39600 => RubyCoreSupport.rational_new!(11,24),
+       41400 => RubyCoreSupport.rational_new!(23,48),
+       43200 => RubyCoreSupport.rational_new!(1,2),
+       45000 => RubyCoreSupport.rational_new!(25,48),
+       46800 => RubyCoreSupport.rational_new!(13,24),
+       48600 => RubyCoreSupport.rational_new!(9,16),
+       50400 => RubyCoreSupport.rational_new!(7,12)}
+    
+    # Returns a Rational expressing the fraction of a day that offset in 
+    # seconds represents (i.e. equivalent to Rational(offset, 86400)). 
+    def rational_for_offset(offset)
+      @@rational_cache[offset] || Rational(offset, 86400)      
+    end
+    module_function :rational_for_offset
+  end
+end