Module: Harrods::Presenter

Included in:
Harrods, Logger, Logger, Middleware, Web
Defined in:
lib/harrods/presenter.rb

Constant Summary collapse

K = 
2.0**10
M = 
2.0**20
G = 
2.0**30
T = 
2.0**40

Instance Method Summary collapse

Instance Method Details

#present_storage_size(bytes, max_digits = 3) ⇒ Object 



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# File 'lib/harrods/presenter.rb', line 8

def present_storage_size( bytes, max_digits=3 )
  value, suffix, precision = case bytes
    when 0...K
      [ bytes, 'B', 0 ]
    else
      value, suffix = case bytes
        when K...M then [ bytes / K, 'kB' ]
        when M...G then [ bytes / M, 'MB' ]
        when G...T then [ bytes / G, 'GB' ]
        else            [ bytes / T, 'TB' ]
      end
      used_digits = case value
        when   0...10   then 1
        when  10...100  then 2
        when 100...1000 then 3
      end
      leftover_digits = max_digits - used_digits
      [ value, suffix, leftover_digits > 0 ? leftover_digits : 0 ]
  end
  "%.#{precision}f#{suffix}" % value
end

#present_with_commas(num) ⇒ Object 



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# File 'lib/harrods/presenter.rb', line 30

def present_with_commas(num)
   str =  num.to_s
   a = []
   str.split(//).reverse.each_slice(3) { |slice| a << slice }
   new_a = []
   a.each do |item|
     new_a << item
     new_a << [","]
   end
   new_a.delete_at(new_a.length - 1)
   new_a.flatten.reverse.join
end