class UtilLinux < Formula
  desc "Collection of Linux utilities"
  homepage "https://github.com/karelzak/util-linux"
  url "https://www.kernel.org/pub/linux/utils/util-linux/v2.34/util-linux-2.34.tar.xz"
  sha256 "743f9d0c7252b6db246b659c1e1ce0bd45d8d4508b4dfa427bbb4a3e9b9f62b5"

  bottle do
    cellar :any
    sha256 "3fb25026099ea42c1c54b80cad6bbdf9bf09b0e0e967ca4690698d0d2d379483" => :mojave
    sha256 "7d7e421229cbf8b0ac5fbe1f0ffc7d18a3e0ce9dc09090bd346f676111cc2bb7" => :high_sierra
    sha256 "1c0c0011db6ecf47a6ad673c38878b5265ce82f6aba4b6bf7d4733d4513b6c7a" => :sierra
  end

  keg_only "macOS provides the uuid.h header"

  def install
    system "./configure", "--disable-dependency-tracking",
                          "--disable-silent-rules",
                          "--prefix=#{prefix}",
                          "--disable-ipcs",        # does not build on macOS
                          "--disable-ipcrm",       # does not build on macOS
                          "--disable-wall",        # already comes with macOS
                          "--enable-libuuid",      # conflicts with ossp-uuid
                          "--disable-libsmartcols" # macOS already ships 'column'

    system "make", "install"

    # Remove binaries already shipped by macOS
    %w[cal col colcrt colrm getopt hexdump logger nologin look mesg more renice rev ul whereis].each do |prog|
      rm_f bin/prog
      rm_f sbin/prog
      rm_f man1/"#{prog}.1"
      rm_f man8/"#{prog}.8"
      rm_f share/"bash-completion/completions/#{prog}"
    end

    # install completions only for installed programs
    Pathname.glob("bash-completion/*") do |prog|
      if (bin/prog.basename).exist? || (sbin/prog.basename).exist?
        bash_completion.install prog
      end
    end
  end

  test do
    out = shell_output("#{bin}/namei -lx /usr").split("\n")
    assert_equal ["f: /usr", "Drwxr-xr-x root wheel /", "drwxr-xr-x root wheel usr"], out
  end
end