/usr/lib/ruby/vendor_ruby/tzinfo/ruby_country_info.rb is in ruby-tzinfo 1.2.5-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# Represents information about a country returned by RubyDataSource.
#
# @private
class RubyCountryInfo < CountryInfo #:nodoc:
# Constructs a new CountryInfo with an ISO 3166 country code, name and
# block. The block will be evaluated to obtain the timezones for the
# country when the zones are first needed.
def initialize(code, name, &block)
super(code, name)
@block = block
@zones = nil
@zone_identifiers = nil
end
# Returns a frozen array of all the zone identifiers for the country. These
# are in the order they were added using the timezone method.
def zone_identifiers
# Thread-safety: It is possible that the value of @zone_identifiers may be
# calculated multiple times in concurrently executing threads. It is not
# worth the overhead of locking to ensure that @zone_identifiers is only
# calculated once.
unless @zone_identifiers
result = zones.collect {|zone| zone.identifier}.freeze
return result if frozen?
@zone_identifiers = result
end
@zone_identifiers
end
# Returns a frozen array of all the timezones for the for the country as
# CountryTimezone instances. These are in the order they were added using
# the timezone method.
def zones
# Thread-safety: It is possible that the value of @zones may be
# calculated multiple times in concurrently executing threads. It is not
# worth the overhead of locking to ensure that @zones is only
# calculated once.
unless @zones
zones = Zones.new
@block.call(zones) if @block
result = zones.list.freeze
return result if frozen?
@block = nil
@zones = result
end
@zones
end
# An instance of the Zones class is passed to the block used to define
# timezones.
#
# @private
class Zones #:nodoc:
attr_reader :list
def initialize
@list = []
end
# Called by the index data to define a timezone for the country.
def timezone(identifier, latitude_numerator, latitude_denominator,
longitude_numerator, longitude_denominator, description = nil)
@list << CountryTimezone.new!(identifier, latitude_numerator,
latitude_denominator, longitude_numerator, longitude_denominator,
description)
end
end
end
end
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