596f3ba0a0
The fact that this is implemented as a hash lookup is an implementation detail, so don't let the KeyError bubble up.
45 lines
976 B
Ruby
45 lines
976 B
Ruby
require 'version'
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module OS
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module Mac
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class Version < ::Version
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SYMBOLS = {
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:yosemite => '10.10',
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:mavericks => '10.9',
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:mountain_lion => '10.8',
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:lion => '10.7',
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:snow_leopard => '10.6',
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:leopard => '10.5',
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:tiger => '10.4',
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}
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def self.from_symbol(sym)
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str = SYMBOLS.fetch(sym) do
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raise ArgumentError, "unknown version #{sym.inspect}"
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end
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new(str)
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end
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def initialize(*args)
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super
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@comparison_cache = {}
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end
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def <=>(other)
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@comparison_cache.fetch(other) do
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v = SYMBOLS.fetch(other) { other.to_s }
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@comparison_cache[other] = super(Version.new(v))
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end
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end
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def to_sym
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SYMBOLS.invert.fetch(@version) { :dunno }
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end
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def pretty_name
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to_sym.to_s.split('_').map(&:capitalize).join(' ')
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end
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end
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end
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end
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