Class: ChefStash::FileSize

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

Instance Method Summary collapse

Constructor Details

#initialize(size) ⇒ FileSize

Returns a new instance of FileSize.



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# File 'lib/chef_stash/utils.rb', line 61

def initialize(size)
  @units = {
    b:  1,
    kb: 1024**1,
    mb: 1024**2,
    gb: 1024**3,
    tb: 1024**4,
    pb: 1024**5,
    eb: 1024**6
  }

  @size_int = size.partition(/\D{1,2}/).at(0).to_i
  unit = size.partition(/\D{1,2}/).at(1).to_s.downcase
  case
  when unit.match(/[kmgtpe]{1}/)
    @size_unit = unit.concat('b')
  when unit.match(/[kmgtpe]{1}b/)
    @size_unit = unit
  else
    @size_unit = 'b'
  end
end

Instance Method Details

#from_size(places = 1) ⇒ Object 



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# File 'lib/chef_stash/utils.rb', line 92

def from_size(places = 1)
  unit_val = @units[@size_unit.to_s.downcase.to_sym]
  sprintf("%.#{places}f", @size_int * unit_val)
end

#to_size(unit, places = 1) ⇒ Object 



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# File 'lib/chef_stash/utils.rb', line 84

def to_size(unit, places = 1)
  unit_val = @units[unit.to_s.downcase.to_sym]
  bytes    = @size_int * @units[@size_unit.to_sym]
  size     = bytes.to_f / unit_val.to_f
  value    = sprintf("%.#{places}f", size).to_f
  "#{value} #{unit.upcase}"
end