a8566c9848
`any?` is not the opposite of `empty?`. Besides the case that `[false, nil].any?` will return false, `any?`(O(n)) has much worse performance than `empty?`(O(1)).
41 lines
690 B
Ruby
41 lines
690 B
Ruby
require "keg"
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class FormulaPin
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PINDIR = Pathname.new("#{HOMEBREW_LIBRARY}/PinnedKegs")
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def initialize(f)
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@f = f
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end
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def path
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Pathname.new("#{PINDIR}/#{@f.name}")
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end
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def pin_at(version)
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PINDIR.mkpath
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version_path = @f.rack.join(version)
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path.make_relative_symlink(version_path) unless pinned? || !version_path.exist?
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end
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def pin
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pin_at(@f.installed_kegs.map { |keg| keg.version }.max)
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end
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def unpin
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path.unlink if pinned?
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PINDIR.rmdir_if_possible
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end
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def pinned?
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path.symlink?
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end
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def pinnable?
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!@f.installed_prefixes.empty?
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end
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def pinned_version
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Keg.new(path.resolved_path).version if pinned?
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end
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end
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