class Knj::Exchangerates
Attributes
rates[R]
Public Class Methods
new(args = {})
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# File lib/knj/exchangerates.rb, line 4 def initialize(args = {}) @rates = {} end
Public Instance Methods
add_rate(data)
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# File lib/knj/exchangerates.rb, line 13 def add_rate(data) if !data[:locale] or data[:locale].to_s.length <= 0 raise "Invalid locale given." end @rates[data[:locale].to_s] = data end
base=(data)
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# File lib/knj/exchangerates.rb, line 8 def base=(data) @base = data[:locale].to_s self.add_rate(data) end
value(locale, floatval)
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# File lib/knj/exchangerates.rb, line 21 def value(locale, floatval) floatval = floatval.to_f locale = locale.to_s raise "No such locale: '#{locale}' in '#{@rates.keys.join(",")}'." if !@rates.key?(locale) base_rate = @rates[@base][:rate].to_f cur_rate = @rates[locale][:rate].to_f if base_rate == cur_rate return floatval elsif cur_rate < base_rate diff = 1 + (base_rate - cur_rate) return floatval * diff else return floatval / cur_rate end end