Library/Homebrew/utils/popen.rb


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module Utils
  def self.popen_read(*args, &block)
    popen(args, "rb", &block)
  end

  def self.popen_write(*args, &block)
    popen(args, "wb", &block)
  end

  def self.popen(args, mode)
    IO.popen("-", mode) do |pipe|
      if pipe
        return pipe.read unless block_given?
        yield pipe
      else
        $stderr.reopen("/dev/null", "w") if !ARGV.debug? && !ARGV.verbose?
        exec(*args)
      end
    end
  end
end