class Dwdiff < Formula
  desc "Diff that operates at the word level"
  homepage "https://os.ghalkes.nl/dwdiff.html"
  url "https://os.ghalkes.nl/dist/dwdiff-2.1.4.tar.bz2"
  sha256 "df16fec44dcb467d65a4246a43628f93741996c1773e930b90c6dde22dd58e0a"
  license "GPL-3.0-only"
  revision 1

  livecheck do
    url "https://os.ghalkes.nl/dist/"
    regex(/href=.*?dwdiff[._-]v?(\d+(?:\.\d+)+)\.t/i)
  end

  bottle do
    sha256 arm64_big_sur: "21f7d3d86cf97118fd664bf3a46c29193b2c851dd16d3fe369cba0e0eda1c654"
    sha256 big_sur:       "156bb6d1e3adeac2f3b7da5f2eb3048d77551983ed27e037e202372cc2656bbc"
    sha256 catalina:      "53f6654a86ca81c164cb75c1a49afefff9ff492717f87344070e02694d87ed3c"
    sha256 mojave:        "f128821bf6e00913517c61a523a9c0b2ce3b882be4c56a06bd8f1dc1ca3f0673"
  end

  depends_on "pkg-config" => :build
  depends_on "gettext"
  depends_on "icu4c"

  def install
    gettext = Formula["gettext"]
    icu4c = Formula["icu4c"]
    ENV.append "CFLAGS", "-I#{gettext.include} -I#{icu4c.include}"
    ENV.append "LDFLAGS", "-L#{gettext.lib} -L#{icu4c.lib} -lintl"

    system "./configure", "--prefix=#{prefix}"
    system "make", "install"

    # Remove non-English man pages
    (man/"nl").rmtree
    (man/"nl.UTF-8").rmtree
    (share/"locale/nl").rmtree
  end

  test do
    (testpath/"a").write "I like beers"
    (testpath/"b").write "I like formulae"
    diff = shell_output("#{bin}/dwdiff a b", 1)
    assert_equal "I like [-beers-] {+formulae+}", diff
  end
end