Module: BytesConverter

Defined in:
lib/bytes_converter.rb,
lib/bytes_converter/version.rb

Constant Summary collapse

VERSION = 
"0.0.5"

Class Method Summary collapse

Class Method Details

.add_unit(new_unit) ⇒ Object

method adding new unit to @sizes hash



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# File 'lib/bytes_converter.rb', line 41

def self.add_unit new_unit
  @sizes.merge!(new_unit)
  true
end

.convert(size) ⇒ Object

method converting size into bytes



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# File 'lib/bytes_converter.rb', line 13

def self.convert size

  # replacing comma with dot
  size_converted = size.downcase.gsub(',','.')

  # separating digits (size) from rest of the string (unit)
  x = size_converted.scan(/(\d*\.?\d*)(.*)/).collect { |found| found }

  # stripping whitespaces
  x[0][0].strip!
  x[0][1].strip!

  # limiting unit to first letter (k,m and so on)
  x[0][1] = x[0][1][/\w{1}/]

  # if unit is present (not nil) -> getting multiplier from sizes array
  # and calculating bytes
  unless x[0][1].nil?
    out = x[0][0].to_f * @sizes[x[0][1]].to_f
  else # if unit is not present -> we assume that size is already in bytes.
    out = x[0][0].to_f
  end

  # returning calculated (or not) value
  out
end

.get_units ⇒ Object

getter for sizes



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# File 'lib/bytes_converter.rb', line 47

def self.get_units
  @sizes
end

.remove_unit(unit) ⇒ Object

method removing size



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# File 'lib/bytes_converter.rb', line 52

def self.remove_unit unit
  @sizes.delete(unit) { |key| "Unit \"#{key}\" not found among sizes!" }
end