class Mupdf < Formula
  desc "Lightweight PDF and XPS viewer"
  homepage "https://mupdf.com/"
  revision 2
  head "https://git.ghostscript.com/mupdf.git"

  stable do
    url "https://mupdf.com/downloads/mupdf-1.11-source.tar.gz"
    sha256 "209474a80c56a035ce3f4958a63373a96fad75c927c7b1acdc553fc85855f00a"

    # Upstream already. Remove on next stable release.
    patch do
      url "https://mirrors.ocf.berkeley.edu/debian/pool/main/m/mupdf/mupdf_1.11+ds1-2.debian.tar.xz"
      mirror "https://mirrorservice.org/sites/ftp.debian.org/debian/pool/main/m/mupdf/mupdf_1.11+ds1-2.debian.tar.xz"
      sha256 "da7445a8063d7c81b97d2c373aa112df69d3ad29989b67621387e88d9c38b668"
      apply "patches/0004-Fix-698539-Don-t-use-xps-font-if-it-could-not-be-loa.patch",
            "patches/0005-Fix-698540-Check-name-comment-and-meta-size-field-si.patch",
            "patches/0006-Fix-698558-Handle-non-tags-in-tag-name-comparisons.patch"
    end
  end

  bottle do
    cellar :any_skip_relocation
    sha256 "782e1857ac9932d52ed2b1edda6cf5e8026de64e6a98df4e5aa87a0756b86e1d" => :high_sierra
    sha256 "8e2ca19930eb13fd87ea98c61f6759b8249bc4091c7dfc6a36b8ace1cd3756d3" => :sierra
    sha256 "0ba3cb19014c9233bfc91f2c67e21e588d0def1b6821f93ce7575d8129a58008" => :el_capitan
  end

  depends_on :x11
  depends_on "openssl"

  conflicts_with "mupdf-tools",
    :because => "mupdf and mupdf-tools install the same binaries."

  def install
    # Work around bug: https://bugs.ghostscript.com/show_bug.cgi?id=697842
    inreplace "Makerules", "RANLIB_CMD := xcrun", "RANLIB_CMD = xcrun"

    # We're using an inreplace here because Debian's version of this patch
    # breaks when using Clang as a compiler rather than GCC. This fixes
    # CVE-2017-15587.
    if build.stable?
      inreplace "source/pdf/pdf-xref.c", "if (i0 < 0 || i1 < 0)",
                                         "if (i0 < 0 || i1 < 0 || i0 > INT_MAX - i1)"
    end

    system "make", "install",
           "build=release",
           "verbose=yes",
           "CC=#{ENV.cc}",
           "prefix=#{prefix}",
           "HAVE_GLFW=no" # Do not build OpenGL viewer: https://bugs.ghostscript.com/show_bug.cgi?id=697842
    bin.install_symlink "mutool" => "mudraw"
  end

  test do
    assert_match "Homebrew test", shell_output("#{bin}/mudraw -F txt #{test_fixtures("test.pdf")}")
  end
end