Module: Dister::Utils

Defined in:
lib/dister/utils.rb

Overview

Shared utility methods

Constant Summary collapse

GIGA_SIZE = 
1073741824.0
MEGA_SIZE = 
1048576.0
KILO_SIZE = 
1024.0

Class Method Summary collapse

Class Method Details

.execute_printing_progress(message)

Shows message and prints a dot per second until the block code terminates its execution. Exceptions raised by the block are displayed and program exists with error status 1.



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# File 'lib/dister/utils.rb', line 12

def execute_printing_progress message
  t = Thread.new do
    print "#{message}"
    while(true) do
      print "."
      STDOUT.flush
      sleep 1
    end
  end
  shell = Thor::Shell::Color.new
  begin
    ret = yield
    t.kill if t.alive?
    shell.say_status "[DONE]", "", :GREEN
    return ret
  rescue
    t.kill if t.alive?
    shell.say_status "[ERROR]", $!, :RED
    exit 1
  end
end

.readable_file_size(size, precision) ⇒ String

Return the file size with a readable style.

Parameters:

  • size (Number) —

    Size to be converted

  • precision (Number) —

    Number of decimals desired

Returns:

  • (String) —

    Return the file size with a readable style.



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# File 'lib/dister/utils.rb', line 42

def readable_file_size(size, precision)
  case
    when size == 1 then "1 Byte"
    when size < KILO_SIZE then "%d Bytes" % size
    when size < MEGA_SIZE then "%.#{precision}f KB" % (size / KILO_SIZE)
    when size < GIGA_SIZE then "%.#{precision}f MB" % (size / MEGA_SIZE)
    else "%.#{precision}f GB" % (size / GIGA_SIZE)
  end
end