Class: Subunit

Inherits:
Object
  • Object
show all
Defined in:
lib/subunit.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(raw_units = {}, obj) ⇒ Subunit

Returns a new instance of Subunit.



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# File 'lib/subunit.rb', line 32

def initialize(raw_units={}, obj)

  @debug = false

  @raw_units = raw_units

  accumulate = ->(a) {

    len = raw_units.to_a.length
    val = ([0]*(len-1) + a).slice(-(len), len).zip(raw_units.values)\
        .inject(0) {|r,x| r * x[1] + x[0] }
  }

  if obj.is_a? String

    @to_i = accumulate.call obj.split(/\D+/).map(&:to_i)

  elsif obj.is_a? Array then

    @to_i = accumulate.call obj

  else

    raw_subunit = obj || 0
    method((raw_units.class.to_s.downcase + '_units').to_sym)\
        .call(raw_units, raw_subunit)

  end
end

Instance Attribute Details

#to_a ⇒ Object (readonly)

Returns the value of attribute to_a.



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# File 'lib/subunit.rb', line 30

def to_a
  @to_a
end

#to_h ⇒ Object (readonly)

Returns the value of attribute to_h.



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# File 'lib/subunit.rb', line 30

def to_h
  @to_h
end

#to_i ⇒ Object (readonly)

Returns the value of attribute to_i.



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# File 'lib/subunit.rb', line 30

def to_i
  @to_i
end

Class Method Details

.hms_to_seconds(obj) ⇒ Object

e.g. Subunit.hms_to_seconds(‘5 minutes and 4 seconds’)

> 304



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# File 'lib/subunit.rb', line 26

def self.hms_to_seconds(obj)
  new(units={hours:60, minutes:60,seconds: 60, }, obj).to_i
end

.seconds(val, units: nil) ⇒ Object 



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# File 'lib/subunit.rb', line 19

def self.seconds(val, units: nil)
  new(units={minutes:60, hours:60, days:24}, seconds: val)
end

Instance Method Details

#strfunit(s) ⇒ Object

usage: Subunit.new(units=hours:60, seconds: 661)\

.strfunit("%x") #=> 11m 1s

%x e.g. 11m 1s %xi e.g. 11m %X e.g. 11 minutes 1 second %Xi e.g. 11 minutes %c e.g. 00:11:01 %sc e.g. 11:01 # supresses leading zeros %s e.g. 11m # returns the 1st most significant value while

ignoring the remainder



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# File 'lib/subunit.rb', line 74

def strfunit(s)

  # The i switch postfixed to the x or X switch will format the output
  # without seconds unless there are no minutes.

  s.sub!(/%xi?/) do |x|

    h = to_h
    a = h.to_a
    a2 = (a.length > 1 and x[-1][/i$/] and h[:seconds]) ? a[0..-2] : a
    a2.map {|label, val| val.to_s + label[0]}.join(' ')

  end

  s.sub!(/%Xi?/) do |x|

    h = to_h
    a = h.to_a
    a2 = (a.length > 1 and x[-1][/i$/] and h[:seconds]) ? a[0..-2] : a

    a2.map do |label, val|

      next if val == 0
      label2 = val > 1 ? label.to_s : label.to_s.sub(/s$/,'')
      val.to_s + ' ' + label2

    end.compact.join(' ')

  end

  s.sub!('%c') do |x|

    a = @raw_units.values.reverse
    a << a[-1]

    fmt = a.map {|v| "%0" + v.to_s.length.to_s + "d"}.join(":")
    fmt % to_a
  end

  s.sub!('%sc') do |x|

    a = @raw_units.values.reverse
    a << a[-1]

    fmt = a.map {|v| "%0" + v.to_s.length.to_s + "d"}.join(":")
    (fmt % to_a).gsub(/^(?:00:)+/,'').sub(/^0/,'')
  end

  s.sub!('%s') do |x|
    label, val = to_h.first
    val.to_s + label[0]
  end

  s
end

#to_s(omit: [], verbose: true) ⇒ Object 



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# File 'lib/subunit.rb', line 130

def to_s(omit: [], verbose: true)

  if not verbose then

    r =  self.to_a.reverse.take_while {|x| x > 0}.reverse\
        .map {|x| "%02d" % x}.join(':')

    if r.length < 2 then
      return '00:00'
    elsif r.length == 2
      return '00:' + r
    else
      return r
    end

  end

  h = @to_h
  omit.each {|x| h.delete x}

  list = h.to_a
  n = list.find {|_,v| v > 0 }
  a = list[list.index(n)..-1].map {|x|"%d %s" % x.reverse}

  duration = case a.length

  when 1
    a.first
  when 2
    a.join ' and '
  else
    "%s and %s" % [a[0..-2].join(', '), a[-1]]
  end

  duration.gsub(/(\b1 \w+)s/, '\1')

end