Class: Forex::CurrencyCode

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

Instance Method Summary collapse

Constructor Details

#initialize(string) ⇒ CurrencyCode

Returns a new instance of CurrencyCode.



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# File 'lib/forex/tabular_rates.rb', line 54

def initialize(string)
  @string = string
end

Instance Method Details

#invalid? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/forex/tabular_rates.rb', line 64

def invalid?
  !valid?
end

#to_s ⇒ Object 



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# File 'lib/forex/tabular_rates.rb', line 68

def to_s
  @string.strip.
    # Replace currency symbols with letter equivalent
    # TODO go crazy and add the rest http://www.xe.com/symbols.php
    gsub('$', 'D').

    # Remove all non word charactes ([^A-Za-z0-9_])
    gsub(/\W/,'')

end

#valid? ⇒ Boolean

TODO validate the currency codes via www.xe.com/iso4217.php

Returns:

  • (Boolean) 


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# File 'lib/forex/tabular_rates.rb', line 59

def valid?
  @string = to_s # hack
  !@string.blank? && @string.length == 3
end