/usr/lib/ruby/vendor_ruby/tzinfo/time_or_datetime.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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require 'rational' unless defined?(Rational)
require 'time'
module TZInfo
# Used by TZInfo internally to represent either a Time, DateTime or
# an Integer timestamp (seconds since 1970-01-01 00:00:00).
class TimeOrDateTime
include Comparable
# Constructs a new TimeOrDateTime. timeOrDateTime can be a Time, DateTime
# or Integer. If using a Time or DateTime, any time zone information
# is ignored.
#
# Integer timestamps must be within the range supported by Time on the
# platform being used.
def initialize(timeOrDateTime)
@time = nil
@datetime = nil
@timestamp = nil
if timeOrDateTime.is_a?(Time)
@time = timeOrDateTime
# Avoid using the slower Rational class unless necessary.
nsec = RubyCoreSupport.time_nsec(@time)
usec = nsec % 1000 == 0 ? nsec / 1000 : Rational(nsec, 1000)
@time = Time.utc(@time.year, @time.mon, @time.mday, @time.hour, @time.min, @time.sec, usec) unless @time.utc?
@orig = @time
elsif timeOrDateTime.is_a?(DateTime)
@datetime = timeOrDateTime
@datetime = @datetime.new_offset(0) unless @datetime.offset == 0
@orig = @datetime
else
@timestamp = timeOrDateTime.to_i
if !RubyCoreSupport.time_supports_64bit && (@timestamp > 2147483647 || @timestamp < -2147483648 || (@timestamp < 0 && !RubyCoreSupport.time_supports_negative))
raise RangeError, 'Timestamp is outside the supported range of Time on this platform'
end
@orig = @timestamp
end
end
# Returns the time as a Time.
#
# When converting from a DateTime, the result is truncated to microsecond
# precision.
def to_time
# Thread-safety: It is possible that the value of @time may be
# calculated multiple times in concurrently executing threads. It is not
# worth the overhead of locking to ensure that @time is only
# calculated once.
unless @time
result = if @timestamp
Time.at(@timestamp).utc
else
Time.utc(year, mon, mday, hour, min, sec, usec)
end
return result if frozen?
@time = result
end
@time
end
# Returns the time as a DateTime.
#
# When converting from a Time, the result is truncated to microsecond
# precision.
def to_datetime
# Thread-safety: It is possible that the value of @datetime may be
# calculated multiple times in concurrently executing threads. It is not
# worth the overhead of locking to ensure that @datetime is only
# calculated once.
unless @datetime
# Avoid using Rational unless necessary.
u = usec
s = u == 0 ? sec : Rational(sec * 1000000 + u, 1000000)
result = RubyCoreSupport.datetime_new(year, mon, mday, hour, min, s)
return result if frozen?
@datetime = result
end
@datetime
end
# Returns the time as an integer timestamp.
def to_i
# Thread-safety: It is possible that the value of @timestamp may be
# calculated multiple times in concurrently executing threads. It is not
# worth the overhead of locking to ensure that @timestamp is only
# calculated once.
unless @timestamp
result = to_time.to_i
return result if frozen?
@timestamp = result
end
@timestamp
end
# Returns the time as the original time passed to new.
def to_orig
@orig
end
# Returns a string representation of the TimeOrDateTime.
def to_s
if @orig.is_a?(Time)
"Time: #{@orig.to_s}"
elsif @orig.is_a?(DateTime)
"DateTime: #{@orig.to_s}"
else
"Timestamp: #{@orig.to_s}"
end
end
# Returns internal object state as a programmer-readable string.
def inspect
"#<#{self.class}: #{@orig.inspect}>"
end
# Returns the year.
def year
if @time
@time.year
elsif @datetime
@datetime.year
else
to_time.year
end
end
# Returns the month of the year (1..12).
def mon
if @time
@time.mon
elsif @datetime
@datetime.mon
else
to_time.mon
end
end
alias :month :mon
# Returns the day of the month (1..n).
def mday
if @time
@time.mday
elsif @datetime
@datetime.mday
else
to_time.mday
end
end
alias :day :mday
# Returns the hour of the day (0..23).
def hour
if @time
@time.hour
elsif @datetime
@datetime.hour
else
to_time.hour
end
end
# Returns the minute of the hour (0..59).
def min
if @time
@time.min
elsif @datetime
@datetime.min
else
to_time.min
end
end
# Returns the second of the minute (0..60). (60 for a leap second).
def sec
if @time
@time.sec
elsif @datetime
@datetime.sec
else
to_time.sec
end
end
# Returns the number of microseconds for the time.
def usec
if @time
@time.usec
elsif @datetime
# Ruby 1.8 has sec_fraction (of which the documentation says
# 'I do NOT recommend you to use this method'). sec_fraction no longer
# exists in Ruby 1.9.
# Calculate the sec_fraction from the day_fraction.
((@datetime.day_fraction - OffsetRationals.rational_for_offset(@datetime.hour * 3600 + @datetime.min * 60 + @datetime.sec)) * 86400000000).to_i
else
0
end
end
# Compares this TimeOrDateTime with another Time, DateTime, timestamp
# (Integer) or TimeOrDateTime. Returns -1, 0 or +1 depending
# whether the receiver is less than, equal to, or greater than
# timeOrDateTime.
#
# Returns nil if the passed in timeOrDateTime is not comparable with
# TimeOrDateTime instances.
#
# Comparisons involving a DateTime will be performed using DateTime#<=>.
# Comparisons that don't involve a DateTime, but include a Time will be
# performed with Time#<=>. Otherwise comparisons will be performed with
# Integer#<=>.
def <=>(timeOrDateTime)
return nil unless timeOrDateTime.is_a?(TimeOrDateTime) ||
timeOrDateTime.is_a?(Time) ||
timeOrDateTime.is_a?(DateTime) ||
timeOrDateTime.respond_to?(:to_i)
unless timeOrDateTime.is_a?(TimeOrDateTime)
timeOrDateTime = TimeOrDateTime.wrap(timeOrDateTime)
end
orig = timeOrDateTime.to_orig
if @orig.is_a?(DateTime) || orig.is_a?(DateTime)
# If either is a DateTime, assume it is there for a reason
# (i.e. for its larger range of acceptable values on 32-bit systems).
to_datetime <=> timeOrDateTime.to_datetime
elsif @orig.is_a?(Time) || orig.is_a?(Time)
to_time <=> timeOrDateTime.to_time
else
to_i <=> timeOrDateTime.to_i
end
end
# Adds a number of seconds to the TimeOrDateTime. Returns a new
# TimeOrDateTime, preserving what the original constructed type was.
# If the original type is a Time and the resulting calculation goes out of
# range for Times, then an exception will be raised by the Time class.
def +(seconds)
if seconds == 0
self
else
if @orig.is_a?(DateTime)
TimeOrDateTime.new(@orig + OffsetRationals.rational_for_offset(seconds))
else
# + defined for Time and Integer
TimeOrDateTime.new(@orig + seconds)
end
end
end
# Subtracts a number of seconds from the TimeOrDateTime. Returns a new
# TimeOrDateTime, preserving what the original constructed type was.
# If the original type is a Time and the resulting calculation goes out of
# range for Times, then an exception will be raised by the Time class.
def -(seconds)
self + (-seconds)
end
# Similar to the + operator, but converts to a DateTime based TimeOrDateTime
# where the Time or Integer timestamp to go out of the allowed range for a
# Time, converts to a DateTime based TimeOrDateTime.
#
# Note that the range of Time varies based on the platform.
def add_with_convert(seconds)
if seconds == 0
self
else
if @orig.is_a?(DateTime)
TimeOrDateTime.new(@orig + OffsetRationals.rational_for_offset(seconds))
else
# A Time or timestamp.
result = to_i + seconds
if ((result > 2147483647 || result < -2147483648) && !RubyCoreSupport.time_supports_64bit) || (result < 0 && !RubyCoreSupport.time_supports_negative)
result = TimeOrDateTime.new(to_datetime + OffsetRationals.rational_for_offset(seconds))
else
result = TimeOrDateTime.new(@orig + seconds)
end
end
end
end
# Returns true if todt represents the same time and was originally
# constructed with the same type (DateTime, Time or timestamp) as this
# TimeOrDateTime.
def eql?(todt)
todt.kind_of?(TimeOrDateTime) && to_orig.eql?(todt.to_orig)
end
# Returns a hash of this TimeOrDateTime.
def hash
@orig.hash
end
# If no block is given, returns a TimeOrDateTime wrapping the given
# timeOrDateTime. If a block is specified, a TimeOrDateTime is constructed
# and passed to the block. The result of the block must be a TimeOrDateTime.
#
# The result of the block will be converted to the type of the originally
# passed in timeOrDateTime and then returned as the result of wrap.
#
# timeOrDateTime can be a Time, DateTime, timestamp (Integer) or
# TimeOrDateTime. If a TimeOrDateTime is passed in, no new TimeOrDateTime
# will be constructed and the value passed to wrap will be used when
# calling the block.
def self.wrap(timeOrDateTime)
t = timeOrDateTime.is_a?(TimeOrDateTime) ? timeOrDateTime : TimeOrDateTime.new(timeOrDateTime)
if block_given?
t = yield t
if timeOrDateTime.is_a?(TimeOrDateTime)
t
elsif timeOrDateTime.is_a?(Time)
t.to_time
elsif timeOrDateTime.is_a?(DateTime)
t.to_datetime
else
t.to_i
end
else
t
end
end
end
end
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