/*

 * Resource item functions

 *

 * Copyright (C) 2011-2025, 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 "libwrc_io_handle.h"

#include "libwrc_libbfio.h"

#include "libwrc_libcdata.h"

#include "libwrc_libcerror.h"

#include "libwrc_resource_item.h"

#include "libwrc_resource_node_entry.h"

/* Creates a resource item

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

 * Returns 1 if successful or -1 on error

 */

int libwrc_resource_item_initialize(

     libwrc_resource_item_t **resource_item,

     libwrc_io_handle_t *io_handle,

     libbfio_handle_t *file_io_handle,

     libcdata_tree_node_t *resource_node,

     libcerror_error_t **error )

{

  libwrc_internal_resource_item_t *internal_resource_item = NULL;

  libwrc_resource_node_entry_t *resource_node_entry       = NULL;

  static char *function                                   = "libwrc_resource_item_initialize";

  if( resource_item == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid resource item.",

     function );

    return( -1 );

  }

  if( *resource_item != NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_VALUE_ALREADY_SET,

     "%s: invalid resource item value already set.",

     function );

    return( -1 );

  }

  if( libcdata_tree_node_get_value(

       resource_node,

       (intptr_t **) &resource_node_entry,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_GET_FAILED,

     "%s: unable to retrieve resource node entry.",

     function );

    goto on_error;

  }

  if( resource_node_entry == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,

     "%s: invalid resource node entry.",

     function );

    goto on_error;

  }

  internal_resource_item = memory_allocate_structure(

                            libwrc_internal_resource_item_t );

  if( internal_resource_item == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_MEMORY,

     LIBCERROR_MEMORY_ERROR_INSUFFICIENT,

     "%s: unable to create resource item.",

     function );

    goto on_error;

  }

  if( memory_set(

       internal_resource_item,

       0,

       sizeof( libwrc_internal_resource_item_t ) ) == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_MEMORY,

     LIBCERROR_MEMORY_ERROR_SET_FAILED,

     "%s: unable to clear resource item.",

     function );

    memory_free(

     internal_resource_item );

    return( -1 );

  }

  internal_resource_item->io_handle           = io_handle;

  internal_resource_item->file_io_handle      = file_io_handle;

  internal_resource_item->resource_node       = resource_node;

  internal_resource_item->resource_node_entry = resource_node_entry;

  *resource_item = (libwrc_resource_item_t *) internal_resource_item;

  return( 1 );

on_error:

  if( internal_resource_item != NULL )

  {

    memory_free(

     internal_resource_item );

  }

  return( -1 );

}

/* Frees a resource item

 * Returns 1 if successful or -1 on error

 */

int libwrc_resource_item_free(

     libwrc_resource_item_t **resource_item,

     libcerror_error_t **error )

{

  libwrc_internal_resource_item_t *internal_resource_item = NULL;

  static char *function                                   = "libwrc_resource_item_free";

  if( resource_item == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid resource item.",

     function );

    return( -1 );

  }

  if( *resource_item != NULL )

  {

    internal_resource_item = (libwrc_internal_resource_item_t *) *resource_item;

    *resource_item         = NULL;

    memory_free(

     internal_resource_item );

  }

  return( 1 );

}

/* Retrieves the resource item identifier

 * Returns 1 if successful or -1 on error

 */

int libwrc_resource_item_get_identifier(

     libwrc_resource_item_t *resource_item,

     uint32_t *identifier,

     libcerror_error_t **error )

{

  libwrc_internal_resource_item_t *internal_resource_item = NULL;

  static char *function                                   = "libwrc_resource_item_get_identifier";

  if( resource_item == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid resource item.",

     function );

    return( -1 );

  }

  internal_resource_item = (libwrc_internal_resource_item_t *) resource_item;

  if( libwrc_resource_node_entry_get_identifier(

       internal_resource_item->resource_node_entry,

       identifier,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_GET_FAILED,

     "%s: unable to retrieve identifier.",

     function );

    return( -1 );

  }

  return( 1 );

}

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

 * The returned size includes the end of string character

 * Returns 1 if successful, 0 if not available or -1 on error

 */

int libwrc_resource_item_get_utf8_name_size(

     libwrc_resource_item_t *resource_item,

     size_t *utf8_string_size,

     libcerror_error_t **error )

{

  libwrc_internal_resource_item_t *internal_resource_item = NULL;

  static char *function                                   = "libwrc_resource_item_get_utf8_name_size";

  int result                                              = 0;

  if( resource_item == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid resource item.",

     function );

    return( -1 );

  }

  internal_resource_item = (libwrc_internal_resource_item_t *) resource_item;

  result = libwrc_resource_node_entry_get_utf8_name_size(

            internal_resource_item->resource_node_entry,

            utf8_string_size,

            error );

  if( result == -1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_GET_FAILED,

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

     function );

    return( -1 );

  }

  return( result );

}

/* Retrieves the UTF-8 encoded name

 * The size should include the end of string character

 * Returns 1 if successful, 0 if not available or -1 on error

 */

int libwrc_resource_item_get_utf8_name(

     libwrc_resource_item_t *resource_item,

     uint8_t *utf8_string,

     size_t utf8_string_size,

     libcerror_error_t **error )

{

  libwrc_internal_resource_item_t *internal_resource_item = NULL;

  static char *function                                   = "libwrc_resource_item_get_utf8_name";

  int result                                              = 0;

  if( resource_item == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid resource item.",

     function );

    return( -1 );

  }

  internal_resource_item = (libwrc_internal_resource_item_t *) resource_item;

  result = libwrc_resource_node_entry_get_utf8_name(

            internal_resource_item->resource_node_entry,

            utf8_string,

            utf8_string_size,

            error );

  if( result == -1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_GET_FAILED,

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

     function );

    return( -1 );

  }

  return( result );

}

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

 * The returned size includes the end of string character

 * Returns 1 if successful, 0 if not available or -1 on error

 */

int libwrc_resource_item_get_utf16_name_size(

     libwrc_resource_item_t *resource_item,

     size_t *utf16_string_size,

     libcerror_error_t **error )

{

  libwrc_internal_resource_item_t *internal_resource_item = NULL;

  static char *function                                   = "libwrc_resource_item_get_utf16_name_size";

  int result                                              = 0;

  if( resource_item == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid resource item.",

     function );

    return( -1 );

  }

  internal_resource_item = (libwrc_internal_resource_item_t *) resource_item;

  result = libwrc_resource_node_entry_get_utf16_name_size(

            internal_resource_item->resource_node_entry,

            utf16_string_size,

            error );

  if( result == -1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_GET_FAILED,

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

     function );

    return( -1 );

  }

  return( result );

}

/* Retrieves the UTF-16 encoded name

 * The size should include the end of string character

 * Returns 1 if successful, 0 if not available or -1 on error

 */

int libwrc_resource_item_get_utf16_name(

     libwrc_resource_item_t *resource_item,

     uint16_t *utf16_string,

     size_t utf16_string_size,

     libcerror_error_t **error )

{

  libwrc_internal_resource_item_t *internal_resource_item = NULL;

  static char *function                                   = "libwrc_resource_item_get_utf16_name";

  int result                                              = 0;

  if( resource_item == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid resource item.",

     function );

    return( -1 );

  }

  internal_resource_item = (libwrc_internal_resource_item_t *) resource_item;

  result = libwrc_resource_node_entry_get_utf16_name(

            internal_resource_item->resource_node_entry,

            utf16_string,

            utf16_string_size,

            error );

  if( result == -1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_GET_FAILED,

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

     function );

    return( -1 );

  }

  return( result );

}

/* Reads resource item data from the current offset into a buffer

 * Returns the number of bytes read or -1 on error

 */

ssize_t libwrc_resource_item_read_buffer(

         libwrc_resource_item_t *resource_item,

         uint8_t *buffer,

         size_t size,

         libcerror_error_t **error )

{

  libwrc_internal_resource_item_t *internal_resource_item = NULL;

  static char *function                                   = "libwrc_resource_item_read_buffer";

  ssize_t read_count                                      = 0;

  off64_t data_offset                                     = 0;

  if( resource_item == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid resource item.",

     function );

    return( -1 );

  }

  internal_resource_item = (libwrc_internal_resource_item_t *) resource_item;

  if( internal_resource_item->io_handle == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,

     "%s: invalid resource item - missing IO handle.",

     function );

    return( -1 );

  }

  if( internal_resource_item->resource_node_entry == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,

     "%s: invalid resource item - missing resource node entry.",

     function );

    return( -1 );

  }

  if( internal_resource_item->resource_node_entry->data_descriptor == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,

     "%s: invalid resource item - invalid resource node entry - missing data descriptor.",

     function );

    return( -1 );

  }

  if( internal_resource_item->current_offset < 0 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_VALUE_OUT_OF_BOUNDS,

     "%s: invalid resource item - current offset value out of bounds.",

     function );

    return( -1 );

  }

  if( buffer == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid buffer.",

     function );

    return( -1 );

  }

  if( size > (size_t) SSIZE_MAX )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,

     "%s: invalid size value exceeds maximum.",

     function );

    return( -1 );

  }

  if( internal_resource_item->current_offset >= (off64_t) internal_resource_item->resource_node_entry->data_descriptor->size )

  {

    return( 0 );

  }

  if( ( size > (size64_t) internal_resource_item->resource_node_entry->data_descriptor->size )

   || ( (size64_t) internal_resource_item->current_offset > ( (size64_t) internal_resource_item->resource_node_entry->data_descriptor->size - size ) ) )

  {

    size = (size_t)( (off64_t) internal_resource_item->resource_node_entry->data_descriptor->size - internal_resource_item->current_offset );

  }

  data_offset  = internal_resource_item->resource_node_entry->data_descriptor->virtual_address;

  data_offset -= internal_resource_item->io_handle->virtual_address;

  data_offset += internal_resource_item->current_offset;

  read_count = libbfio_handle_read_buffer_at_offset(

                internal_resource_item->file_io_handle,

                buffer,

                size,

                data_offset,

                error );

  if( read_count != (ssize_t) size )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_IO,

     LIBCERROR_IO_ERROR_READ_FAILED,

     "%s: unable to read resource data at offset: %" PRIi64 " (0x%08" PRIx64 ").",

     function,

     data_offset,

     data_offset );

    return( -1 );

  }

  return( read_count );

}

/* Reads resource item data a specific offset into a buffer

 * Returns the number of bytes read or -1 on error

 */

ssize_t libwrc_resource_item_read_buffer_at_offset(

         libwrc_resource_item_t *resource_item,

         uint8_t *buffer,

         size_t buffer_size,

         off64_t offset,

         libcerror_error_t **error )

{

  static char *function = "libwrc_resource_item_read_buffer_at_offset";

  ssize_t read_count    = 0;

  if( libwrc_resource_item_seek_offset(

       resource_item,

       offset,

       SEEK_SET,

       error ) == -1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_IO,

     LIBCERROR_IO_ERROR_SEEK_FAILED,

     "%s: unable to seek offset.",

     function );

    return( -1 );

  }

  read_count = libwrc_resource_item_read_buffer(

                resource_item,

                buffer,

                buffer_size,

                error );

  if( read_count < 0 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_IO,

     LIBCERROR_IO_ERROR_READ_FAILED,

     "%s: unable to read buffer.",

     function );

    return( -1 );

  }

  return( read_count );

}

/* Seeks a certain offset of the resource item data

 * Returns the offset if seek is successful or -1 on error

 */

off64_t libwrc_resource_item_seek_offset(

         libwrc_resource_item_t *resource_item,

         off64_t offset,

         int whence,

         libcerror_error_t **error )

{

  libwrc_internal_resource_item_t *internal_resource_item = NULL;

  static char *function                                   = "libwrc_resource_item_seek_offset";

  if( resource_item == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid resource item.",

     function );

    return( -1 );

  }

  internal_resource_item = (libwrc_internal_resource_item_t *) resource_item;

  if( internal_resource_item->resource_node_entry == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,

     "%s: invalid resource item - missing resource node entry.",

     function );

    return( -1 );

  }

  if( internal_resource_item->resource_node_entry->data_descriptor == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,

     "%s: invalid resource item - invalid resource node entry - missing data descriptor.",

     function );

    return( -1 );

  }

  if( internal_resource_item->current_offset < 0 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_VALUE_OUT_OF_BOUNDS,

     "%s: invalid resource item - current offset value out of bounds.",

     function );

    return( -1 );

  }

  if( ( whence != SEEK_CUR )

   && ( whence != SEEK_END )

   && ( whence != SEEK_SET ) )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE,

     "%s: unsupported whence.",

     function );

    return( -1 );

  }

  if( whence == SEEK_CUR )

  {

    offset += internal_resource_item->current_offset;

  }

  else if( whence == SEEK_END )

  {

    offset += internal_resource_item->resource_node_entry->data_descriptor->size;

  }

  if( offset < 0 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_IO,

     LIBCERROR_IO_ERROR_SEEK_FAILED,

     "%s: unable to seek offset.",

     function );

    return( -1 );

  }

  internal_resource_item->current_offset = offset;

  return( offset );

}

/* Retireves the current offset in the resource item data

 * Returns 1 if successful or -1 on error

 */

int libwrc_resource_item_get_offset(

     libwrc_resource_item_t *resource_item,

     off64_t *offset,

     libcerror_error_t **error )

{

  libwrc_internal_resource_item_t *internal_resource_item = NULL;

  static char *function                                   = "libwrc_resource_item_get_offset";

  if( resource_item == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid resource item.",

     function );

    return( -1 );

  }

  internal_resource_item = (libwrc_internal_resource_item_t *) resource_item;

  if( internal_resource_item->resource_node_entry == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,

     "%s: invalid resource item - missing resource node entry.",

     function );

    return( -1 );

  }

  if( internal_resource_item->resource_node_entry->data_descriptor == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,

     "%s: invalid resource item - invalid resource node entry - missing data descriptor.",

     function );

    return( -1 );

  }

  if( offset == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid offset.",

     function );

    return( -1 );

  }

  *offset = internal_resource_item->current_offset;

  return( 1 );

}

/* Retrieves the size of the resource data

 * Returns 1 if successful or -1 on error

 */

int libwrc_resource_item_get_size(

     libwrc_resource_item_t *resource_item,

     uint32_t *size,

     libcerror_error_t **error )

{

  libwrc_internal_resource_item_t *internal_resource_item = NULL;

  static char *function                                   = "libwrc_resource_item_get_size";

  uint32_t safe_size                                      = 0;

  if( resource_item == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid resource item.",

     function );

    return( -1 );

  }

  internal_resource_item = (libwrc_internal_resource_item_t *) resource_item;

  if( internal_resource_item->resource_node_entry == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,

     "%s: invalid resource item - missing resource node entry.",

     function );

    return( -1 );

  }

  if( size == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid size.",

     function );

    return( -1 );

  }

  if( internal_resource_item->resource_node_entry->data_descriptor != NULL )

  {

    safe_size = (uint32_t) internal_resource_item->resource_node_entry->data_descriptor->size;

  }

  *size = safe_size;

  return( 1 );

}

/* Retrieves the number of sub items

 * Returns 1 if successful or -1 on error

 */

int libwrc_resource_item_get_number_of_sub_items(

     libwrc_resource_item_t *resource_item,

     int *number_of_sub_items,

     libcerror_error_t **error )

{

  libwrc_internal_resource_item_t *internal_resource_item = NULL;

  static char *function                                   = "libwrc_resource_item_get_number_of_sub_items";

  if( resource_item == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid resource item.",

     function );

    return( -1 );

  }

  internal_resource_item = (libwrc_internal_resource_item_t *) resource_item;

  if( libcdata_tree_node_get_number_of_sub_nodes(

       internal_resource_item->resource_node,

       number_of_sub_items,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_GET_FAILED,

     "%s: unable to retrieve number of resource sub nodes.",

     function );

    return( -1 );

  }

  return( 1 );

}

/* Retrieves a specific sub item

 * Returns 1 if successful or -1 on error

 */

int libwrc_resource_item_get_sub_item_by_index(

     libwrc_resource_item_t *resource_item,

     int sub_item_index,

     libwrc_resource_item_t **resource_sub_item,

     libcerror_error_t **error )

{

  libcdata_tree_node_t *resource_sub_node                 = NULL;

  libwrc_internal_resource_item_t *internal_resource_item = NULL;

  static char *function                                   = "libwrc_resource_item_get_sub_item_by_index";

  if( resource_item == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid resource item.",

     function );

    return( -1 );

  }

  internal_resource_item = (libwrc_internal_resource_item_t *) resource_item;

  if( libcdata_tree_node_get_sub_node_by_index(

       internal_resource_item->resource_node,

       sub_item_index,

       &resource_sub_node,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_GET_FAILED,

     "%s: unable to retrieve resource sub node: %d.",

     function,

     sub_item_index );

    return( -1 );

  }

  if( libwrc_resource_item_initialize(

       resource_sub_item,

       internal_resource_item->io_handle,

       internal_resource_item->file_io_handle,

       resource_sub_node,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED,

     "%s: unable to create resource sub item.",

     function );

    return( -1 );

  }

  return( 1 );

}