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require "version"
module OS
module Mac
class Version < ::Version
SYMBOLS = {
: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"
}
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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