require 'formula'

class Msgpack < Formula
  homepage 'http://msgpack.org/'
  url 'http://msgpack.org/releases/cpp/msgpack-0.5.7.tar.gz'
  sha256 '7c203265cf14a4723820e0fc7ac14bf4bad5578f7bc525e9835c70cd36e7d1b8'

  fails_with :llvm do
    build 2334
  end

  def install
    system "./configure", "--disable-dependency-tracking", "--prefix=#{prefix}"
    system "make install"
  end

  def test
    # Reference: http://wiki.msgpack.org/display/MSGPACK/QuickStart+for+C+Language
    mktemp do
      (Pathname.pwd/'test.c').write <<-EOS.undent
        #include <msgpack.h>
        #include <stdio.h>

        int main(void)
        {
           msgpack_sbuffer* buffer = msgpack_sbuffer_new();
           msgpack_packer* pk = msgpack_packer_new(buffer, msgpack_sbuffer_write);
           msgpack_pack_int(pk, 1);
           msgpack_pack_int(pk, 2);
           msgpack_pack_int(pk, 3);

           /* deserializes these objects using msgpack_unpacker. */
           msgpack_unpacker pac;
           msgpack_unpacker_init(&pac, MSGPACK_UNPACKER_INIT_BUFFER_SIZE);

           /* feeds the buffer. */
           msgpack_unpacker_reserve_buffer(&pac, buffer->size);
           memcpy(msgpack_unpacker_buffer(&pac), buffer->data, buffer->size);
           msgpack_unpacker_buffer_consumed(&pac, buffer->size);

           /* now starts streaming deserialization. */
           msgpack_unpacked result;
           msgpack_unpacked_init(&result);

           while(msgpack_unpacker_next(&pac, &result)) {
               msgpack_object_print(stdout, result.data);
               puts("");
           }
        }
        EOS

      system ENV.cc, "-o", "test", "test.c", "-lmsgpack"
      `./test` == "1\n2\n3\n"
    end
  end
end