Module: EtOrbi

Defined in:
lib/et-orbi.rb

Defined Under Namespace

Classes: EoTime

Constant Summary collapse

VERSION = 
'1.0.7'

Class Method Summary collapse

Class Method Details

._make_info ⇒ Object

For ‘make info`



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# File 'lib/et-orbi.rb', line 212

def _make_info

  puts render_nozone_time(Time.now.to_f)
  puts platform_info
end

.determine_local_tzone ⇒ Object 



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# File 'lib/et-orbi.rb', line 610

def determine_local_tzone

  etz = ENV['TZ']

  tz = ::TZInfo::Timezone.get(etz) rescue nil
  return tz if tz

  if Time.respond_to?(:zone) && Time.zone.respond_to?(:tzinfo)
    tz = Time.zone.tzinfo
    return tz if tz
  end

  tz = ::TZInfo::Timezone.get(os_tz) rescue nil
  return tz if tz

  tzs = determine_local_tzones
  (etz && tzs.find { |z| z.name == etz }) || tzs.first
end

.find_olson_zone(str) ⇒ Object 



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# File 'lib/et-orbi.rb', line 604

def find_olson_zone(str)

  list_olson_zones(str).each { |s| z = get_tzone(s); return z if z }
  nil
end

.get_tzone(o) ⇒ Object 



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# File 'lib/et-orbi.rb', line 143

def get_tzone(o)

  return o if o.is_a?(::TZInfo::Timezone)
  return nil if o == nil
  return local_tzone if o == :local
  return ::TZInfo::Timezone.get('Zulu') if o == 'Z'

  o = to_offset(o) if o.is_a?(Numeric)

  return nil unless o.is_a?(String)

  (@custom_tz_cache ||= {})[o] ||
  get_offset_tzone(o) ||
  (::TZInfo::Timezone.get(o) rescue nil)
end

.list_iso8601_zones(s) ⇒ Object

en.wikipedia.org/wiki/ISO_8601 Postel’s law applies



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# File 'lib/et-orbi.rb', line 576

def list_iso8601_zones(s)

  s.scan(
    %r{
      (?<=:\d\d)
      \s*
      (?:
        [-+]
        (?:[0-1][0-9]|2[0-4])
        (?:(?::)?(?:[0-5][0-9]|60))?
        (?![-+])
        |
        Z
      )
    }x
    ).collect(&:strip)
end

.list_olson_zones(s) ⇒ Object 



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# File 'lib/et-orbi.rb', line 594

def list_olson_zones(s)

  s.scan(
    %r{
      (?<=\s|\A)
      (?:[A-Za-z][A-Za-z0-9+_-]+)
      (?:\/(?:[A-Za-z][A-Za-z0-9+_-]+)){0,2}
    }x)
end

.local_tzone ⇒ Object 



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# File 'lib/et-orbi.rb', line 159

def local_tzone

  @local_tzone = nil \
    if @local_tzone_loaded_at && (Time.now > @local_tzone_loaded_at + 1800)
  @local_tzone = nil \
    if @local_tzone_tz != ENV['TZ']

  @local_tzone ||=
    begin
      @local_tzone_tz = ENV['TZ']
      @local_tzone_loaded_at = Time.now
      determine_local_tzone
    end
end

.make_from_array(a, zone) ⇒ Object 



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# File 'lib/et-orbi.rb', line 118

def make_from_array(a, zone)

  t = Time.utc(*a)
  s = t.strftime("%Y-%m-%d %H:%M:%S.#{'%06d' % t.usec}")

  make_from_string(s, zone)
end

.make_from_date(d, zone) ⇒ Object 



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# File 'lib/et-orbi.rb', line 109

def make_from_date(d, zone)

  make_from_time(
    d.respond_to?(:to_time) ?
    d.to_time :
    Time.parse(d.strftime('%Y-%m-%d %H:%M:%S')),
    zone)
end

.make_from_eotime(eot, zone) ⇒ Object 



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# File 'lib/et-orbi.rb', line 137

def make_from_eotime(eot, zone)

  return eot if zone == nil || zone == eot.zone
  EoTime.new(eot.to_f, zone)
end

.make_from_numeric(f, zone) ⇒ Object 



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# File 'lib/et-orbi.rb', line 132

def make_from_numeric(f, zone)

  EoTime.new(Time.now.to_f + f, zone)
end

.make_from_string(s, zone) ⇒ Object 



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# File 'lib/et-orbi.rb', line 126

def make_from_string(s, zone)

#p [ :mfs, s, zone ]
  parse(s, zone: zone)
end

.make_from_time(t, zone) ⇒ Object 



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# File 'lib/et-orbi.rb', line 94

def make_from_time(t, zone)

  z =
    zone ||
    get_as_tzone(t) ||
    get_tzone(t.zone) ||
    get_local_tzone(t)

  z ||= t.zone
    # pass the abbreviation anyway,
    # it will be used in resulting the error message

  EoTime.new(t.to_f, z)
end

.make_time(*a) ⇒ Object Also known as: make 



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# File 'lib/et-orbi.rb', line 72

def make_time(*a)

#p [ :mt, a ]
  zone = a.length > 1 ? get_tzone(a.last) : nil
  a.pop if zone
#p [ :mt, zone ]

  o = a.length > 1 ? a : a.first
#p [ :mt, :o, o ]

  case o
  when Time then make_from_time(o, zone)
  when Date then make_from_date(o, zone)
  when Array then make_from_array(o, zone)
  when String then make_from_string(o, zone)
  when Numeric then make_from_numeric(o, zone)
  when ::EtOrbi::EoTime then make_from_eotime(o, zone)
  else fail ArgumentError.new(
    "Cannot turn #{o.inspect} to a ::EtOrbi::EoTime instance")
  end
end

.now(zone = nil) ⇒ Object 



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# File 'lib/et-orbi.rb', line 17

def now(zone=nil)

  EoTime.new(Time.now.to_f, zone)
end

.os_tz ⇒ Object 



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# File 'lib/et-orbi.rb', line 629

def os_tz

  debian_tz || centos_tz || osx_tz
end

.parse(str, opts = {}) ⇒ Object 



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# File 'lib/et-orbi.rb', line 22

def parse(str, opts={})

  if defined?(::Chronic) && t = ::Chronic.parse(str, opts)
    return EoTime.new(t, nil)
  end

  #rold = RUBY_VERSION < '1.9.0'
  #rold = RUBY_VERSION < '2.0.0'
  begin
    DateTime.parse(str)
  rescue
    fail ArgumentError, "No time information in #{str.inspect}"
  end #if rold
    #
    # is necessary since Time.parse('xxx') in Ruby < 1.9 yields `now`

  str_zone = get_tzone(list_iso8601_zones(str).last)
#p [ :parse, str, str_zone ]
#p ENV['TZ']

#p [ :parse, :oz, opts[:zone] ]
#p [ :parse, :sz, str_zone ]
#p [ :parse, :foz, find_olson_zone(str) ]
#p [ :parse, :ltz, local_tzone ]
  zone =
    opts[:zone] ||
    str_zone ||
    find_olson_zone(str) ||
    local_tzone
#p [ :parse, :zone, zone ]

  str = str.sub(zone.name, '') unless zone.name.match(/\A[-+]/)
    #
    # for 'Sun Nov 18 16:01:00 Asia/Singapore 2012',
    # although where does rufus-scheduler have it from?

  local = Time.parse(str)
#p [ :parse, :local, local, local.zone ]

  secs =
    if str_zone
      local.to_f
    else
      zone.period_for_local(local).to_utc(local).to_f
    end
#p [ :parse, :secs, secs ]

  EoTime.new(secs, zone)
end

.platform_info ⇒ Object 



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# File 'lib/et-orbi.rb', line 189

def platform_info

  etos = Proc.new { |k, v| "#{k}:#{v.inspect}" }

  '(' +
    {
      'etz' => ENV['TZ'],
      'tnz' => Time.now.zone,
      'tzid' => defined?(TZInfo::Data),
      'rv' => RUBY_VERSION,
      'rp' => RUBY_PLATFORM,
      'eov' => EtOrbi::VERSION,
      'rorv' => (Rails::VERSION::STRING rescue nil),
      'astz' => ([ Time.zone.class, Time.zone.tzinfo.name ] rescue nil),
    }.collect(&etos).join(',') + ',' +
    gather_tzs.collect(&etos).join(',') +
  ')'
end

.render_nozone_time(seconds) ⇒ Object 



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# File 'lib/et-orbi.rb', line 174

def render_nozone_time(seconds)

  t =
    Time.utc(0) + seconds
  ts =
    t.strftime('%Y-%m-%d %H:%M:%S') +
    ".#{(seconds % 1).to_s.split('.').last}"
  z =
    EtOrbi.local_tzone ?
    EtOrbi.local_tzone.period_for_local(t).abbreviation.to_s :
    nil

  "(secs:#{seconds},utc~:#{ts.inspect},ltz~:#{z.inspect})"
end