lib/app_info/parser.rb in app-info-1.0.5 vs lib/app_info/parser.rb in app-info-1.1.0

@@ -12,7 +12,29 @@
     end
 
     def self.mac?
       RbConfig::CONFIG['host_os'] =~ /darwin/ ? true : false
     end
+
+    module Util
+      FILE_SIZE_UNITS = %w[B KB MB GB TB].freeze
+
+      def self.file_size(file, humanable)
+        file_size = File.size(file)
+        humanable ? size_to_humanable(file_size) : file_size
+      end
+
+      def self.size_to_humanable(number)
+        if number.to_i < 1024
+          exponent = 0
+        else
+          max_exp = FILE_SIZE_UNITS.size - 1
+          exponent = (Math.log(number) / Math.log(1024)).to_i
+          exponent = max_exp if exponent > max_exp
+          number = format('%.2f', (number / (1024**exponent.to_f)))
+        end
+
+        "#{number} #{FILE_SIZE_UNITS[exponent]}"
+      end
+    end
   end
 end