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Diffstat (limited to 'activesupport/lib/active_support/vendor/tzinfo-0.3.13/tzinfo/data_timezone_info.rb')
| -rw-r--r-- | activesupport/lib/active_support/vendor/tzinfo-0.3.13/tzinfo/data_timezone_info.rb | 228 |
1 files changed, 0 insertions, 228 deletions
diff --git a/activesupport/lib/active_support/vendor/tzinfo-0.3.13/tzinfo/data_timezone_info.rb b/activesupport/lib/active_support/vendor/tzinfo-0.3.13/tzinfo/data_timezone_info.rb deleted file mode 100644 index a45d94554b..0000000000 --- a/activesupport/lib/active_support/vendor/tzinfo-0.3.13/tzinfo/data_timezone_info.rb +++ /dev/null @@ -1,228 +0,0 @@ -#-- -# 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 'tzinfo/time_or_datetime' -require 'tzinfo/timezone_info' -require 'tzinfo/timezone_offset_info' -require 'tzinfo/timezone_period' -require 'tzinfo/timezone_transition_info' - -module TZInfo - # Thrown if no offsets have been defined when calling period_for_utc or - # periods_for_local. Indicates an error in the timezone data. - class NoOffsetsDefined < StandardError - end - - # Represents a (non-linked) timezone defined in a data module. - class DataTimezoneInfo < TimezoneInfo #:nodoc: - - # Constructs a new TimezoneInfo with its identifier. - def initialize(identifier) - super(identifier) - @offsets = {} - @transitions = [] - @previous_offset = nil - @transitions_index = nil - end - - # Defines a offset. The id uniquely identifies this offset within the - # timezone. utc_offset and std_offset define the offset in seconds of - # standard time from UTC and daylight savings from standard time - # respectively. abbreviation describes the timezone offset (e.g. GMT, BST, - # EST or EDT). - # - # The first offset to be defined is treated as the offset that applies - # until the first transition. This will usually be in Local Mean Time (LMT). - # - # ArgumentError will be raised if the id is already defined. - def offset(id, utc_offset, std_offset, abbreviation) - raise ArgumentError, 'Offset already defined' if @offsets.has_key?(id) - - offset = TimezoneOffsetInfo.new(utc_offset, std_offset, abbreviation) - @offsets[id] = offset - @previous_offset = offset unless @previous_offset - end - - # Defines a transition. Transitions must be defined in chronological order. - # ArgumentError will be raised if a transition is added out of order. - # offset_id refers to an id defined with offset. ArgumentError will be - # raised if the offset_id cannot be found. numerator_or_time and - # denomiator specify the time the transition occurs as. See - # TimezoneTransitionInfo for more detail about specifying times. - def transition(year, month, offset_id, numerator_or_time, denominator = nil) - offset = @offsets[offset_id] - raise ArgumentError, 'Offset not found' unless offset - - if @transitions_index - if year < @last_year || (year == @last_year && month < @last_month) - raise ArgumentError, 'Transitions must be increasing date order' - end - - # Record the position of the first transition with this index. - index = transition_index(year, month) - @transitions_index[index] ||= @transitions.length - - # Fill in any gaps - (index - 1).downto(0) do |i| - break if @transitions_index[i] - @transitions_index[i] = @transitions.length - end - else - @transitions_index = [@transitions.length] - @start_year = year - @start_month = month - end - - @transitions << TimezoneTransitionInfo.new(offset, @previous_offset, - numerator_or_time, denominator) - @last_year = year - @last_month = month - @previous_offset = offset - end - - # Returns the TimezonePeriod for the given UTC time. - # Raises NoOffsetsDefined if no offsets have been defined. - def period_for_utc(utc) - unless @transitions.empty? - utc = TimeOrDateTime.wrap(utc) - index = transition_index(utc.year, utc.mon) - - start_transition = nil - start = transition_before_end(index) - if start - start.downto(0) do |i| - if @transitions[i].at <= utc - start_transition = @transitions[i] - break - end - end - end - - end_transition = nil - start = transition_after_start(index) - if start - start.upto(@transitions.length - 1) do |i| - if @transitions[i].at > utc - end_transition = @transitions[i] - break - end - end - end - - if start_transition || end_transition - TimezonePeriod.new(start_transition, end_transition) - else - # Won't happen since there are transitions. Must always find one - # transition that is either >= or < the specified time. - raise 'No transitions found in search' - end - else - raise NoOffsetsDefined, 'No offsets have been defined' unless @previous_offset - TimezonePeriod.new(nil, nil, @previous_offset) - end - end - - # Returns the set of TimezonePeriods for the given local time as an array. - # Results returned are ordered by increasing UTC start date. - # Returns an empty array if no periods are found for the given time. - # Raises NoOffsetsDefined if no offsets have been defined. - def periods_for_local(local) - unless @transitions.empty? - local = TimeOrDateTime.wrap(local) - index = transition_index(local.year, local.mon) - - result = [] - - start_index = transition_after_start(index - 1) - if start_index && @transitions[start_index].local_end > local - if start_index > 0 - if @transitions[start_index - 1].local_start <= local - result << TimezonePeriod.new(@transitions[start_index - 1], @transitions[start_index]) - end - else - result << TimezonePeriod.new(nil, @transitions[start_index]) - end - end - - end_index = transition_before_end(index + 1) - - if end_index - start_index = end_index unless start_index - - start_index.upto(transition_before_end(index + 1)) do |i| - if @transitions[i].local_start <= local - if i + 1 < @transitions.length - if @transitions[i + 1].local_end > local - result << TimezonePeriod.new(@transitions[i], @transitions[i + 1]) - end - else - result << TimezonePeriod.new(@transitions[i], nil) - end - end - end - end - - result - else - raise NoOffsetsDefined, 'No offsets have been defined' unless @previous_offset - [TimezonePeriod.new(nil, nil, @previous_offset)] - end - end - - private - # Returns the index into the @transitions_index array for a given year - # and month. - def transition_index(year, month) - index = (year - @start_year) * 2 - index += 1 if month > 6 - index -= 1 if @start_month > 6 - index - end - - # Returns the index into @transitions of the first transition that occurs - # on or after the start of the given index into @transitions_index. - # Returns nil if there are no such transitions. - def transition_after_start(index) - if index >= @transitions_index.length - nil - else - index = 0 if index < 0 - @transitions_index[index] - end - end - - # Returns the index into @transitions of the first transition that occurs - # before the end of the given index into @transitions_index. - # Returns nil if there are no such transitions. - def transition_before_end(index) - index = index + 1 - - if index <= 0 - nil - elsif index >= @transitions_index.length - @transitions.length - 1 - else - @transitions_index[index] - 1 - end - end - end -end |