class Xa < Formula
  desc "6502 cross assembler"
  homepage "http://www.floodgap.com/retrotech/xa/"
  url "http://www.floodgap.com/retrotech/xa/dists/xa-2.3.7.tar.gz"
  sha256 "34e792c159584153f5b5a246ae5d2142dfc92a20b673ea8c9e04584bde594442"

  bottle do
    cellar :any
    sha256 "7e6d166991991c31e57269bdd84ec77ac5b4df241361b999ec8d04e977d47e66" => :yosemite
    sha256 "dc934d679ade0e6180334b746c2bff510b0388ed9908d5388bb9bdd4f61e69c5" => :mavericks
    sha256 "4c529953faecfdd9386f2065b5b189388b5710d1b99f995b72003d4bed0502c6" => :mountain_lion
  end

  def install
    system "make", "CC=#{ENV.cc}",
                   "CFLAGS=#{ENV.cflags}",
                   "DESTDIR=#{prefix}",
                   "install"
  end

  test do
    (testpath/"foo.a").write "jsr $ffd2\n"

    system "#{bin}/xa", "foo.a"
    code = File.open("a.o65", "rb") { |f| f.read.unpack("C*") }
    assert_equal [0x20, 0xd2, 0xff], code
  end
end