class ClangFormat < Formula
  desc "Formatting tools for C, C++, Obj-C, Java, JavaScript, TypeScript"
  homepage "http://clang.llvm.org/docs/ClangFormat.html"
  version "2016-01-05"

  stable do
    url "http://llvm.org/releases/3.7.1/llvm-3.7.1.src.tar.xz"
    sha256 "be7794ed0cec42d6c682ca8e3517535b54555a3defabec83554dbc74db545ad5"

    resource "clang" do
      url "http://llvm.org/releases/3.7.1/cfe-3.7.1.src.tar.xz"
      sha256 "56e2164c7c2a1772d5ed2a3e57485ff73ff06c97dff12edbeea1acc4412b0674"
    end

    resource "libcxx" do
      url "http://llvm.org/releases/3.7.1/libcxx-3.7.1.src.tar.xz"
      sha256 "357fbd4288ce99733ba06ae2bec6f503413d258aeebaab8b6a791201e6f7f144"
    end
  end

  bottle do
    cellar :any_skip_relocation
    sha256 "54dbe7695d83c9dcc08cce26f400f5d348d94d91076d70f795c0e11fbfe8df36" => :el_capitan
    sha256 "f908cd465f5d9dc1f1732986967480ffa15473d7c83bdfbbdb3e9e9442750f15" => :yosemite
    sha256 "cb8537c2d51fb29caf8f11b35adcd14362fbf575dcb1c7fbab2879884e5ca1b3" => :mavericks
  end

  head do
    url "http://llvm.org/svn/llvm-project/llvm/trunk/", :using => :svn

    resource "clang" do
      url "http://llvm.org/svn/llvm-project/cfe/trunk/", :using => :svn
    end

    resource "libcxx" do
      url "http://llvm.org/releases/3.7.1/libcxx-3.7.1.src.tar.xz"
      sha256 "357fbd4288ce99733ba06ae2bec6f503413d258aeebaab8b6a791201e6f7f144"
    end
  end

  depends_on "cmake" => :build
  depends_on "ninja" => :build
  depends_on "subversion" => :build

  def install
    (buildpath/"projects/libcxx").install resource("libcxx")
    (buildpath/"tools/clang").install resource("clang")

    mkdir "build" do
      args = std_cmake_args
      args << "-DLLVM_ENABLE_LIBCXX=ON"
      args << ".."
      system "cmake", "-G", "Ninja", *args
      system "ninja", "clang-format"
      bin.install "bin/clang-format"
    end
    bin.install "tools/clang/tools/clang-format/git-clang-format"
    (share/"clang").install Dir["tools/clang/tools/clang-format/clang-format*"]
  end

  test do
    # NB: below C code is messily formatted on purpose.
    (testpath/"test.c").write <<-EOS
      int         main(char *args) { \n   \t printf("hello"); }
    EOS

    assert_equal "int main(char *args) { printf(\"hello\"); }\n",
        shell_output("#{bin}/clang-format -style=Google test.c")
  end
end