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