/*

 * Directory entry functions

 *

 * Copyright (C) 2010-2026, 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 <byte_stream.h>

#include <memory.h>

#include <types.h>

#include "libfsntfs_directory_entry.h"

#include "libfsntfs_file_name_values.h"

#include "libfsntfs_index_value.h"

#include "libfsntfs_libcdata.h"

#include "libfsntfs_libcerror.h"

#include "libfsntfs_libcnotify.h"

/* Creates a directory entry

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

 * Returns 1 if successful or -1 on error

 */

int libfsntfs_directory_entry_initialize(

     libfsntfs_directory_entry_t **directory_entry,

     libcerror_error_t **error )

{

  static char *function = "libfsntfs_directory_entry_initialize";

  if( directory_entry == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid directory entry.",

     function );

    return( -1 );

  }

  if( *directory_entry != NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_VALUE_ALREADY_SET,

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

     function );

    return( -1 );

  }

  *directory_entry = memory_allocate_structure(

                      libfsntfs_directory_entry_t );

  if( *directory_entry == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_MEMORY,

     LIBCERROR_MEMORY_ERROR_INSUFFICIENT,

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

     function );

    goto on_error;

  }

  if( memory_set(

       *directory_entry,

       0,

       sizeof( libfsntfs_directory_entry_t ) ) == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_MEMORY,

     LIBCERROR_MEMORY_ERROR_SET_FAILED,

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

     function );

    memory_free(

     *directory_entry );

    *directory_entry = NULL;

    return( -1 );

  }

  return( 1 );

on_error:

  if( *directory_entry != NULL )

  {

    memory_free(

     *directory_entry );

    *directory_entry = NULL;

  }

  return( -1 );

}

/* Frees a directory entry

 * Returns 1 if successful or -1 on error

 */

int libfsntfs_directory_entry_free(

     libfsntfs_directory_entry_t **directory_entry,

     libcerror_error_t **error )

{

  static char *function = "libfsntfs_directory_entry_free";

  int result            = 1;

  if( directory_entry == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid directory entry.",

     function );

    return( -1 );

  }

  if( *directory_entry != NULL )

  {

    if( ( *directory_entry )->file_name_values != NULL )

    {

      if( libfsntfs_file_name_values_free(

           &( ( *directory_entry )->file_name_values ),

           error ) != 1 )

      {

        libcerror_error_set(

         error,

         LIBCERROR_ERROR_DOMAIN_RUNTIME,

         LIBCERROR_RUNTIME_ERROR_FINALIZE_FAILED,

         "%s: unable to free file name values.",

         function );

        result = -1;

      }

    }

    if( ( *directory_entry )->short_file_name_values != NULL )

    {

      if( libfsntfs_file_name_values_free(

           &( ( *directory_entry )->short_file_name_values ),

           error ) != 1 )

      {

        libcerror_error_set(

         error,

         LIBCERROR_ERROR_DOMAIN_RUNTIME,

         LIBCERROR_RUNTIME_ERROR_FINALIZE_FAILED,

         "%s: unable to free short file name values.",

         function );

        result = -1;

      }

    }

    memory_free(

     *directory_entry );

    *directory_entry = NULL;

  }

  return( result );

}

/* Clones a directory entry

 * Returns 1 if successful or -1 on error

 */

int libfsntfs_directory_entry_clone(

     libfsntfs_directory_entry_t **destination_directory_entry,

     libfsntfs_directory_entry_t *source_directory_entry,

     libcerror_error_t **error )

{

  static char *function = "libfsntfs_directory_entry_clone";

  if( destination_directory_entry == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid directory entry.",

     function );

    return( -1 );

  }

  if( *destination_directory_entry != NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_VALUE_ALREADY_SET,

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

     function );

    return( -1 );

  }

  if( source_directory_entry == NULL )

  {

    *destination_directory_entry = source_directory_entry;

    return( 1 );

  }

  if( libfsntfs_directory_entry_initialize(

       destination_directory_entry,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED,

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

     function );

    goto on_error;

  }

  if( libfsntfs_file_name_values_clone(

       &( ( *destination_directory_entry )->file_name_values ),

       source_directory_entry->file_name_values,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED,

     "%s: unable to create destination file name values.",

     function );

    goto on_error;

  }

  if( libfsntfs_file_name_values_clone(

       &( ( *destination_directory_entry )->short_file_name_values ),

       source_directory_entry->short_file_name_values,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED,

     "%s: unable to create destination short file name values.",

     function );

    goto on_error;

  }

  ( *destination_directory_entry )->file_reference = source_directory_entry->file_reference;

  return( 1 );

on_error:

  if( *destination_directory_entry != NULL )

  {

    libfsntfs_directory_entry_free(

     destination_directory_entry,

     NULL );

  }

  return( -1 );

}

/* Compares 2 directory entries by file reference

 * Returns LIBCDATA_COMPARE_LESS, LIBCDATA_COMPARE_EQUAL, LIBCDATA_COMPARE_GREATER if successful or -1 on error

 */

int libfsntfs_directory_entry_compare_by_file_reference(

     libfsntfs_directory_entry_t *first_directory_entry,

     libfsntfs_directory_entry_t *second_directory_entry,

     libcerror_error_t **error )

{

  static char *function           = "libfsntfs_directory_entry_compare_by_file_reference";

  uint64_t first_mft_entry_index  = 0;

  uint64_t second_mft_entry_index = 0;

  uint16_t first_sequence_number  = 0;

  uint16_t second_sequence_number = 0;

  if( first_directory_entry == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid first directory entry.",

     function );

    return( -1 );

  }

  if( second_directory_entry == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid second directory entry.",

     function );

    return( -1 );

  }

  first_mft_entry_index  = first_directory_entry->file_reference & 0xffffffffffffUL;

  second_mft_entry_index = second_directory_entry->file_reference & 0xffffffffffffUL;

  if( first_mft_entry_index < second_mft_entry_index )

  {

    return( LIBCDATA_COMPARE_LESS );

  }

  else if( first_mft_entry_index > second_mft_entry_index )

  {

    return( LIBCDATA_COMPARE_GREATER );

  }

  first_sequence_number  = (uint16_t) ( first_directory_entry->file_reference >> 48 );

  second_sequence_number = (uint16_t) ( second_directory_entry->file_reference >> 48 );

  if( first_sequence_number < second_sequence_number )

  {

    return( LIBCDATA_COMPARE_LESS );

  }

  else if( first_sequence_number > second_sequence_number )

  {

    return( LIBCDATA_COMPARE_GREATER );

  }

  return( LIBCDATA_COMPARE_EQUAL );

}

/* Retrieves the MFT entry index

 * Returns 1 if successful or -1 on error

 */

int libfsntfs_directory_entry_get_mft_entry_index(

     libfsntfs_directory_entry_t *directory_entry,

     uint64_t *mft_entry_index,

     libcerror_error_t **error )

{

  static char *function = "libfsntfs_directory_entry_get_mft_entry_index";

  if( directory_entry == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid directory entry.",

     function );

    return( -1 );

  }

  if( mft_entry_index == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid MFT entry index.",

     function );

    return( -1 );

  }

  if( ( directory_entry->file_reference & 0xffffffffffffUL ) > (uint64_t) INT_MAX )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_VALUE_OUT_OF_BOUNDS,

     "%s: invalid MFT entry index value out of bounds.",

     function );

    return( -1 );

  }

  *mft_entry_index = (int) ( directory_entry->file_reference & 0xffffffffffffUL );

  return( 1 );

}

/* Retrieves the file reference

 * Returns 1 if successful or -1 on error

 */

int libfsntfs_directory_entry_get_file_reference(

     libfsntfs_directory_entry_t *directory_entry,

     uint64_t *file_reference,

     libcerror_error_t **error )

{

  static char *function = "libfsntfs_directory_entry_get_file_reference";

  if( directory_entry == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid directory entry.",

     function );

    return( -1 );

  }

  if( file_reference == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid file reference.",

     function );

    return( -1 );

  }

  *file_reference = directory_entry->file_reference;

  return( 1 );

}

/* Retrieves the parent file reference

 * Returns 1 if successful or -1 on error

 */

int libfsntfs_directory_entry_get_parent_file_reference(

     libfsntfs_directory_entry_t *directory_entry,

     uint64_t *parent_file_reference,

     libcerror_error_t **error )

{

  static char *function = "libfsntfs_directory_entry_get_parent_file_reference";

  if( directory_entry == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid directory entry.",

     function );

    return( -1 );

  }

  if( libfsntfs_file_name_values_get_parent_file_reference(

       directory_entry->file_name_values,

       parent_file_reference,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_GET_FAILED,

     "%s: unable to retrieve parent reference from file name values.",

     function );

    return( -1 );

  }

  return( 1 );

}

/* Retrieves the creation date and time

 * Returns 1 if successful or -1 on error

 */

int libfsntfs_directory_entry_get_creation_time(

     libfsntfs_directory_entry_t *directory_entry,

     uint64_t *filetime,

     libcerror_error_t **error )

{

  static char *function = "libfsntfs_directory_entry_get_creation_time";

  if( directory_entry == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid directory entry.",

     function );

    return( -1 );

  }

  if( libfsntfs_file_name_values_get_creation_time(

       directory_entry->file_name_values,

       filetime,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_GET_FAILED,

     "%s: unable to retrieve creation time from file name values.",

     function );

    return( -1 );

  }

  return( 1 );

}

/* Retrieves the modification date and time

 * Returns 1 if successful or -1 on error

 */

int libfsntfs_directory_entry_get_modification_time(

     libfsntfs_directory_entry_t *directory_entry,

     uint64_t *filetime,

     libcerror_error_t **error )

{

  static char *function = "libfsntfs_directory_entry_get_modification_time";

  if( directory_entry == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid directory entry.",

     function );

    return( -1 );

  }

  if( libfsntfs_file_name_values_get_modification_time(

       directory_entry->file_name_values,

       filetime,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_GET_FAILED,

     "%s: unable to retrieve modification time from file name values.",

     function );

    return( -1 );

  }

  return( 1 );

}

/* Retrieves the access date and time

 * Returns 1 if successful or -1 on error

 */

int libfsntfs_directory_entry_get_access_time(

     libfsntfs_directory_entry_t *directory_entry,

     uint64_t *filetime,

     libcerror_error_t **error )

{

  static char *function = "libfsntfs_directory_entry_get_access_time";

  if( directory_entry == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid directory entry.",

     function );

    return( -1 );

  }

  if( libfsntfs_file_name_values_get_access_time(

       directory_entry->file_name_values,

       filetime,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_GET_FAILED,

     "%s: unable to retrieve access time from file name values.",

     function );

    return( -1 );

  }

  return( 1 );

}

/* Retrieves the entry modification date and time

 * Returns 1 if successful or -1 on error

 */

int libfsntfs_directory_entry_get_entry_modification_time(

     libfsntfs_directory_entry_t *directory_entry,

     uint64_t *filetime,

     libcerror_error_t **error )

{

  static char *function = "libfsntfs_directory_entry_get_entry_modification_time";

  if( directory_entry == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid directory entry.",

     function );

    return( -1 );

  }

  if( libfsntfs_file_name_values_get_entry_modification_time(

       directory_entry->file_name_values,

       filetime,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_GET_FAILED,

     "%s: unable to retrieve entry modification time from file name values.",

     function );

    return( -1 );

  }

  return( 1 );

}

/* Retrieves the size

 * Returns 1 if successful or -1 on error

 */

int libfsntfs_directory_entry_get_size(

     libfsntfs_directory_entry_t *directory_entry,

     uint64_t *size,

     libcerror_error_t **error )

{

  static char *function = "libfsntfs_directory_entry_get_entry_size";

  if( directory_entry == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid directory entry.",

     function );

    return( -1 );

  }

  if( libfsntfs_file_name_values_get_size(

       directory_entry->file_name_values,

       size,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_GET_FAILED,

     "%s: unable to retrieve size from file name values.",

     function );

    return( -1 );

  }

  return( 1 );

}

/* Retrieves the file attribute flags

 * Returns 1 if successful or -1 on error

 */

int libfsntfs_directory_entry_get_file_attribute_flags(

     libfsntfs_directory_entry_t *directory_entry,

     uint32_t *file_attribute_flags,

     libcerror_error_t **error )

{

  static char *function = "libfsntfs_directory_entry_get_entry_file_attribute_flags";

  if( directory_entry == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid directory entry.",

     function );

    return( -1 );

  }

  if( libfsntfs_file_name_values_get_file_attribute_flags(

       directory_entry->file_name_values,

       file_attribute_flags,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_GET_FAILED,

     "%s: unable to retrieve file attribute flags from file name values.",

     function );

    return( -1 );

  }

  return( 1 );

}

/* Retrieves the size of the UTF-8 encoded name

 * This function uses UTF-8 RFC 2279 (or 6-byte UTF-8) to support characters outside Unicode

 * The returned size includes the end of string character

 * Returns 1 if successful or -1 on error

 */

int libfsntfs_directory_entry_get_utf8_name_size(

     libfsntfs_directory_entry_t *directory_entry,

     size_t *utf8_string_size,

     libcerror_error_t **error )

{

  static char *function = "libfsntfs_directory_entry_get_utf8_name_size";

  if( directory_entry == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid directory entry.",

     function );

    return( -1 );

  }

  if( libfsntfs_file_name_values_get_utf8_name_size(

       directory_entry->file_name_values,

       utf8_string_size,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_GET_FAILED,

     "%s: unable to retrieve size of UTF-8 name from file name values.",

     function );

    return( -1 );

  }

  return( 1 );

}

/* Retrieves the UTF-8 encoded name

 * This function uses UTF-8 RFC 2279 (or 6-byte UTF-8) to support characters outside Unicode

 * The size should include the end of string character

 * Returns 1 if successful or -1 on error

 */

int libfsntfs_directory_entry_get_utf8_name(

     libfsntfs_directory_entry_t *directory_entry,

     uint8_t *utf8_string,

     size_t utf8_string_size,

     libcerror_error_t **error )

{

  static char *function = "libfsntfs_directory_entry_get_utf8_name";

  if( directory_entry == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid directory entry.",

     function );

    return( -1 );

  }

  if( libfsntfs_file_name_values_get_utf8_name(

       directory_entry->file_name_values,

       utf8_string,

       utf8_string_size,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_GET_FAILED,

     "%s: unable to retrieve UTF-8 name from file name values.",

     function );

    return( -1 );

  }

  return( 1 );

}

/* Retrieves the size of the UTF-16 encoded name

 * This function uses UCS-2 (with surrogates) to support characters outside Unicode

 * The returned size includes the end of string character

 * Returns 1 if successful or -1 on error

 */

int libfsntfs_directory_entry_get_utf16_name_size(

     libfsntfs_directory_entry_t *directory_entry,

     size_t *utf16_string_size,

     libcerror_error_t **error )

{

  static char *function = "libfsntfs_directory_entry_get_utf16_name_size";

  if( directory_entry == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid directory entry.",

     function );

    return( -1 );

  }

  if( libfsntfs_file_name_values_get_utf16_name_size(

       directory_entry->file_name_values,

       utf16_string_size,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_GET_FAILED,

     "%s: unable to retrieve size of UTF-16 name from file name values.",

     function );

    return( -1 );

  }

  return( 1 );

}

/* Retrieves the UTF-16 encoded name

 * This function uses UCS-2 (with surrogates) to support characters outside Unicode

 * The size should include the end of string character

 * Returns 1 if successful or -1 on error

 */

int libfsntfs_directory_entry_get_utf16_name(

     libfsntfs_directory_entry_t *directory_entry,

     uint16_t *utf16_string,

     size_t utf16_string_size,

     libcerror_error_t **error )

{

  static char *function = "libfsntfs_directory_entry_get_utf16_name";

  if( directory_entry == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid directory entry.",

     function );

    return( -1 );

  }

  if( libfsntfs_file_name_values_get_utf16_name(

       directory_entry->file_name_values,

       utf16_string,

       utf16_string_size,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_GET_FAILED,

     "%s: unable to retrieve UTF-16 name from file name values.",

     function );

    return( -1 );

  }

  return( 1 );

}