Class: Puppet::Pops::Time::Timestamp

Inherits:
TimeData show all
Defined in:
lib/puppet/pops/time/timestamp.rb

Constant Summary collapse

DEFAULT_FORMATS_WO_TZ =
['%FT%T.%N', '%FT%T', '%F %T.%N', '%F %T', '%F']
DEFAULT_FORMATS =
['%FT%T.%N %Z', '%FT%T %Z', '%F %T.%N %Z', '%F %T %Z', '%F %Z'] + DEFAULT_FORMATS_WO_TZ
CURRENT_TIMEZONE =
'current'.freeze
KEY_TIMEZONE =
'timezone'.freeze

Constants included from LabelProvider

LabelProvider::A, LabelProvider::AN, LabelProvider::SKIPPED_CHARACTERS, LabelProvider::VOWELS

Instance Attribute Summary

Attributes inherited from TimeData

#nsecs

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from TimeData

#<=>, #initialize, #label, #to_c, #to_f, #to_i, #to_int, #to_r

Methods included from LabelProvider

#a_an, #a_an_uc, #article, #combine_strings, #label, #plural_s, #the, #the_uc

Constructor Details

This class inherits a constructor from Puppet::Pops::Time::TimeData

Class Method Details

.convert_timezone(tz) ⇒ String

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Converts a timezone that strptime can parse using '%z' into '-HH:MM' or '+HH:MM'


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# File 'lib/puppet/pops/time/timestamp.rb', line 15

def self.convert_timezone(tz)
  if tz =~ /\A[+-]\d\d:\d\d\z/
    tz
  else
    offset = utc_offset(tz) / 60
    if offset < 0
      offset = offset.abs
      sprintf('-%2.2d:%2.2d', offset / 60, offset % 60)
    else
      sprintf('+%2.2d:%2.2d', offset / 60, offset % 60)
    end
  end
end

.format_time(format, time, timezone) ⇒ Object

Formats a ruby Time object using the given timezone


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# File 'lib/puppet/pops/time/timestamp.rb', line 46

def self.format_time(format, time, timezone)
  unless timezone.nil? || timezone.empty?
    time = time.localtime(convert_timezone(timezone))
  end
  time.strftime(format)
end

.from_hash(args_hash) ⇒ Object


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# File 'lib/puppet/pops/time/timestamp.rb', line 61

def self.from_hash(args_hash)
  parse(args_hash[KEY_STRING], args_hash[KEY_FORMAT], args_hash[KEY_TIMEZONE])
end

.from_time(t) ⇒ Object


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# File 'lib/puppet/pops/time/timestamp.rb', line 57

def self.from_time(t)
  new(t.tv_sec * NSECS_PER_SEC + t.tv_nsec)
end

.nowObject


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# File 'lib/puppet/pops/time/timestamp.rb', line 53

def self.now
  from_time(::Time.now)
end

.parse(str, format = :default, timezone = nil) ⇒ Object


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# File 'lib/puppet/pops/time/timestamp.rb', line 65

def self.parse(str, format = :default, timezone = nil)
  has_timezone = !(timezone.nil? || timezone.empty? || timezone == :default)
  if format.nil? || format == :default
    format = has_timezone ? DEFAULT_FORMATS_WO_TZ : DEFAULT_FORMATS
  end

  parsed = nil
  if format.is_a?(Array)
    format.each do |fmt|
      parsed = DateTime._strptime(str, fmt)
      next if parsed.nil?
      if parsed.include?(:leftover) || (has_timezone && parsed.include?(:zone))
        parsed = nil
        next
      end
      break
    end
    if parsed.nil?
      raise ArgumentError, _(
        "Unable to parse '%{str}' using any of the formats %{formats}") % { str: str, formats: format.join(', ') }
    end
  else
    parsed = DateTime._strptime(str, format)
    if parsed.nil? || parsed.include?(:leftover)
      raise ArgumentError, _("Unable to parse '%{str}' using format '%{format}'") % { str: str, format: format }
    end
    if has_timezone && parsed.include?(:zone)
      raise ArgumentError, _(
        'Using a Timezone designator in format specification is mutually exclusive to providing an explicit timezone argument')
    end
  end
  unless has_timezone
    timezone = parsed[:zone]
    has_timezone = !timezone.nil?
  end
  fraction = parsed[:sec_fraction]

  # Convert msec rational found in _strptime hash to usec
  fraction = fraction * 1000000 unless fraction.nil?

  # Create the Time instance and adjust for timezone
  parsed_time = ::Time.utc(parsed[:year], parsed[:mon], parsed[:mday], parsed[:hour], parsed[:min], parsed[:sec], fraction)
  parsed_time -= utc_offset(timezone) if has_timezone

  # Convert to Timestamp
  from_time(parsed_time)
end

.utc_offset(timezone) ⇒ Integer

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns the zone offset from utc for the given `timezone`


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# File 'lib/puppet/pops/time/timestamp.rb', line 34

def self.utc_offset(timezone)
  if CURRENT_TIMEZONE.casecmp(timezone) == 0
    ::Time.now.utc_offset
  else
    hash = DateTime._strptime(timezone, '%z')
    offset = hash.nil? ? nil : hash[:offset]
    raise ArgumentError, _("Illegal timezone '%{timezone}'") % { timezone: timezone } if offset.nil?
    offset
  end
end

Instance Method Details

#+(o) ⇒ Object


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# File 'lib/puppet/pops/time/timestamp.rb', line 121

def +(o)
  case o
  when Timespan
    Timestamp.new(@nsecs + o.nsecs)
  when Integer, Float
    Timestamp.new(@nsecs + (o * NSECS_PER_SEC).to_i)
  else
    raise ArgumentError, _("%{klass} cannot be added to a Timestamp") % { klass: a_an_uc(o) }
  end
end

#-(o) ⇒ Object


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# File 'lib/puppet/pops/time/timestamp.rb', line 132

def -(o)
  case o
  when Timestamp
    # Diff between two timestamps is a timespan
    Timespan.new(@nsecs - o.nsecs)
  when Timespan
    Timestamp.new(@nsecs - o.nsecs)
  when Integer, Float
    # Subtract seconds
    Timestamp.new(@nsecs - (o * NSECS_PER_SEC).to_i)
  else
    raise ArgumentError, _("%{klass} cannot be subtracted from a Timestamp") % { klass: a_an_uc(o) }
  end
end

#format(format, timezone = nil) ⇒ Object


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# File 'lib/puppet/pops/time/timestamp.rb', line 147

def format(format, timezone = nil)
  self.class.format_time(format, to_time, timezone)
end

#to_sObject


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# File 'lib/puppet/pops/time/timestamp.rb', line 151

def to_s
  format(DEFAULT_FORMATS[0])
end

#to_timeObject


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# File 'lib/puppet/pops/time/timestamp.rb', line 155

def to_time
  ::Time.at(to_r).utc
end