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/* -------------------------------------------

  Copyright (C) 2024, Amlal El Mahrouss, all rights reserved.

------------------------------------------- */

#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