/*

 * Value entry functions

 *

 * Copyright (C) 2010-2024, Joachim Metz <joachim.metz@gmail.com>

 *

 * Refer to AUTHORS for acknowledgements.

 *

 * This program is free software: you can redistribute it and/or modify

 * it under the terms of the GNU Lesser General Public License as published by

 * the Free Software Foundation, either version 3 of the License, or

 * (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public License

 * along with this program.  If not, see <https://www.gnu.org/licenses/>.

 */

#include <common.h>

#include <memory.h>

#include <types.h>

#include "libfvalue_libcerror.h"

#include "libfvalue_value_entry.h"

/* Creates a value entry

 * Make sure the value value_entry is referencing, is set to NULL

 * Returns 1 if successful or -1 on error

 */

int libfvalue_value_entry_initialize(

     libfvalue_value_entry_t **value_entry,

     libcerror_error_t **error )

{

  static char *function = "libfvalue_value_entry_initialize";

  if( value_entry == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid value entry.",

     function );

    return( -1 );

  }

  if( *value_entry != NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_VALUE_ALREADY_SET,

     "%s: invalid value entry value already set.",

     function );

    return( -1 );

  }

  *value_entry = memory_allocate_structure(

                  libfvalue_value_entry_t );

  if( *value_entry == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_MEMORY,

     LIBCERROR_MEMORY_ERROR_INSUFFICIENT,

     "%s: unable to create value entry.",

     function );

    goto on_error;

  }

  if( memory_set(

       *value_entry,

       0,

       sizeof( libfvalue_value_entry_t ) ) == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_MEMORY,

     LIBCERROR_MEMORY_ERROR_SET_FAILED,

     "%s: unable to clear value entry.",

     function );

    goto on_error;

  }

  return( 1 );

on_error:

  if( *value_entry != NULL )

  {

    memory_free(

     *value_entry );

    *value_entry = NULL;

  }

  return( -1 );

}

/* Frees a value entry

 * Returns 1 if successful or -1 on error

 */

int libfvalue_value_entry_free(

     libfvalue_value_entry_t **value_entry,

     libcerror_error_t **error )

{

  static char *function = "libfvalue_value_entry_free";

  if( value_entry == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid value entry.",

     function );

    return( -1 );

  }

  if( *value_entry != NULL )

  {

    memory_free(

     *value_entry );

    *value_entry = NULL;

  }

  return( 1 );

}

/* Clones a value entry

 * Returns 1 if successful or -1 on error

 */

int libfvalue_value_entry_clone(

     libfvalue_value_entry_t **destination_value_entry,

     libfvalue_value_entry_t *source_value_entry,

     libcerror_error_t **error )

{

  static char *function = "libfvalue_value_entry_clone";

  if( destination_value_entry == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid destination value entry.",

     function );

    return( -1 );

  }

  if( *destination_value_entry != NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_VALUE_ALREADY_SET,

     "%s: destination value entry already set.",

     function );

    return( -1 );

  }

  if( source_value_entry == NULL )

  {

    *destination_value_entry = NULL;

    return( 1 );

  }

  *destination_value_entry = memory_allocate_structure(

                              libfvalue_value_entry_t );

  if( *destination_value_entry == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_MEMORY,

     LIBCERROR_MEMORY_ERROR_INSUFFICIENT,

     "%s: unable to create destination value entry.",

     function );

    goto on_error;

  }

  if( memory_copy(

       *destination_value_entry,

       source_value_entry,

       sizeof( libfvalue_value_entry_t ) ) == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_MEMORY,

     LIBCERROR_MEMORY_ERROR_COPY_FAILED,

     "%s: unable to copy value entry.",

     function );

    goto on_error;

  }

  return( 1 );

on_error:

  if( *destination_value_entry != NULL )

  {

    memory_free(

     *destination_value_entry );

    *destination_value_entry = NULL;

  }

  return( -1 );

}