Class: AmountFormatter

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

Constant Summary collapse

FORMAT_DEFAULT_ARGS = 
{:precision => 2, :seperator => ".", :delimiter => ","}

Class Method Summary collapse

Class Method Details

.format(number, args = {}) ⇒ Object

Returns the number as a formatted string.



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# File 'lib/amount_formatter.rb', line 5

def self.format(number, args = {})
  args = FORMAT_DEFAULT_ARGS.merge(args)
  number = number.to_f unless number.is_a?(Float)
  return sprintf("%.#{args[:precision].to_i}f", number).gsub(".", args[:seperator]) if number < 1 && number > -1
  number = sprintf("%.#{args[:precision].to_i}f", number).split(".")
  
  str = ""
  number[0].reverse.scan(/(.{1,3})/) do |match|
    if match[0] == "-"
      #This happens if the number is a negative number and we reach the minus-sign.
      str << match[0]
    else
      str << args[:delimiter] if str.length > 0
      str << match[0]
    end
  end
  
  str = str.reverse
  str << "#{args[:seperator]}#{number[1]}" if args[:precision] > 0
  
  return str
end