Module: Zena::Use::Dates::StringMethods

Defined in:
lib/zena/use/dates.rb

Constant Summary collapse

SPLIT_STRING =
/[^0-9]+/
SPLIT_FORMAT =
/[^\w%]*%/

Instance Method Summary collapse

Instance Method Details

#to_durationObject

Convert a string of the form ‘1 month 4 days’ to the duration in seconds. Valid formats are: y : Y : year : years M : month : months d : day : days h : hour : hours m : minute : minutes s : second : seconds



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# File 'lib/zena/use/dates.rb', line 256

def to_duration
  res = 0
  val = 0
  split(/\s+/).map {|e| e =~ /^(\d+)([a-zA-Z]+)$/ ? [$1,$2] : e }.flatten.map do |e|
    if e =~ /[0-9]/
      val = e.to_i
    else
      if e[0..1] == 'mo'
        e = 'M'
      end
      res += val * case e[0..0]
      when 'y','Y'
        31536000
      when 'M'
        2592000
      when 'd'
        86400
      when 'h'
        3600
      when 'm'
        60
      when 's'
        1
      else
        0
      end
      val = 0
    end
  end
  res
end

#to_utc(format, timezone = nil) ⇒ Object

Parse date : return an utc date from a string and an strftime format. With the current implementation, you can only use ‘.’, ‘-’, ‘ ’ or ‘:’ to separate the different parts in the format.



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# File 'lib/zena/use/dates.rb', line 217

def to_utc(format, timezone=nil)
  elements = split(SPLIT_STRING)
  format = format.sub('T', ' ').split(SPLIT_FORMAT)[1..-1]
  if elements
    hash = {}
    elements.each_index do |i|
      hash[format[i]] = elements[i]
    end
    hash['Y'] ||= hash['y'] ? (hash['y'].to_i + 2000) : Time.now.year
    hash['H'] ||= 0
    hash['M'] ||= 0
    hash['S'] ||= 0
    if hash['Y'] && hash['m'] && hash['d']
      res = Time.utc(hash['Y'], hash['m'], hash['d'], hash['H'], hash['M'], hash['S'])
      begin
        timezone ? timezone.local_to_utc(res, true) : res
      rescue TZInfo::AmbiguousTime
        # Better a bad date then nothing
        res
      end
    else
      nil
    end
  else
    nil
  end
rescue ArgumentError
  nil
end