26 lines
728 B
Ruby
26 lines
728 B
Ruby
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require 'formula'
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# `brew uses foo bar` now returns formula that use both foo and bar
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# Rationale: If you want the union just run the command twice and
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# concatenate the results.
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# The intersection is harder to achieve with shell tools.
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module Homebrew extend self
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def uses
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uses = Formula.all.select do |f|
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ARGV.formulae.all? do |ff|
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# For each formula given, show which other formulas depend on it.
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# We only go one level up, ie. direct dependencies.
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f.deps.include? ff.name
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end
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end
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if ARGV.include? "--installed"
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uses = uses.select do |f|
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keg = HOMEBREW_CELLAR/f
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keg.directory? and not keg.subdirs.empty?
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end
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end
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puts uses.sort
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end
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end
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