Add support for Buffer construction via raw arrays

Author: Tyler Galdes

include/cppkafka/buffer.h

@@ -111,6 +111,21 @@ class CPPKAFKA_API Buffer {
     template <typename T, size_t N>
     Buffer(std::array<T, N>&& data) = delete;
 
+    /**
+     * Constructs a buffer from a raw array
+     *
+     * \param data The the array to be used as input
+     */
+    template <typename T, size_t N>
+    Buffer(const T(&data)[N])
+    : data_(reinterpret_cast<const DataType*>(&data[0])), size_(sizeof(T) * N) {
+        static_assert(sizeof(T) == sizeof(DataType), "sizeof(T) != sizeof(DataType)");
+    }
+
+    // Don't allow construction from temporary raw arrays
+    template <typename T, size_t N>
+    Buffer(const T(&&data)[N]) = delete;
+
     /**
      * \brief Construct a buffer from a const string ref
      *