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’

Parameters:

  • tz (String) —

    the timezone to convert

Returns:

  • (String) —

    the converted timezone



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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

.now ⇒ Object 



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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`

Parameters:

  • timezone (String) —

    the timezone to get the offset for

Returns:

  • (Integer) —

    the timezone offset, in seconds



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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_s ⇒ Object 



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

def to_s
  format(DEFAULT_FORMATS[0])
end

#to_time ⇒ Object 



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

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