// Copyright 2024-2025, Amlal El Mahrouss (amlal@nekernel.org)
// Distributed under the Apache Software License, Version 2.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.apache.org/licenses/LICENSE-2.0)
// Official repository: https://github.com/ne-foss-org/neboot

#include <libfdt/libfdt_env.h>

extern int fdt_create(void* buf, int bufsize);
extern int fdt_open_into(void* buf, void* into, int bufsize);
extern int fdt_begin_node(void* buf, const char* name);
extern int fdt_end_node(void* buf);
extern int fdt_finish(void* buf);
extern int fdt_finish_reverse_map(void* buf);

#define fdt_check_err(err) \
  if (err) return err

/**
 * @brief creates a empty tree with a specified buffer and size.
 *
 * @param buf the buffer.
 * @param bufsize the size.
 * @return int
 */

int fdt_create_empty_tree(void* buf, int bufsize) {
  int err;
  err = fdt_create(buf, bufsize);
  fdt_check_err(err);

  err = fdt_finish_reverse_map(buf);
  fdt_check_err(err);

  err = fdt_begin_node(buf, "");
  fdt_check_err(err);

  err = fdt_end_node(buf);
  fdt_check_err(err);

  err = fdt_finish(buf);
  fdt_check_err(err);

  return fdt_open_into(buf, buf, bufsize);
}

#undef fdt_check_err