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require "version"
module OS
module Mac
class Version < ::Version
SYMBOLS = {
sierra: "10.12",
el_capitan: "10.11",
yosemite: "10.10",
mavericks: "10.9",
mountain_lion: "10.8",
lion: "10.7",
snow_leopard: "10.6",
leopard: "10.5",
tiger: "10.4",
}.freeze
def self.from_symbol(sym)
str = SYMBOLS.fetch(sym) do
raise ArgumentError, "unknown version #{sym.inspect}"
end
new(str)
end
def initialize(*args)
super
@comparison_cache = {}
end
def <=>(other)
@comparison_cache.fetch(other) do
v = SYMBOLS.fetch(other) { other.to_s }
@comparison_cache[other] = super(Version.new(v))
end
end
def to_sym
SYMBOLS.invert.fetch(@version) { :dunno }
end
def pretty_name
to_sym.to_s.split("_").map(&:capitalize).join(" ")
end
end
end
end
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