Method StringCopy

include/sonic/dom/genericnode.h:197–206

* @brief Copy string data to memory allocated from alloc, then store pointer * and size into node. * @param s string pointer * @param len string length * @param alloc Allocator * @note: If failed when allocating memory, the node will be set as an empty * string. */

   * string.
   */
  void StringCopy(const char* s, size_t len, alloc_type& alloc) {
    sv.p = (char*)(alloc.Malloc(len + 1));
    if (sv.p) {
      std::memcpy(const_cast<char*>(sv.p), s, len);
      const_cast<char*>(sv.p)[len] = '\0';
      setLength(len, kStringFree);
    } else {
      setEmptyString();
    }
  }

  // Check APIs
  /**