/src/libesedb/libuna/libuna_utf32_stream.c

Source (jump to first uncovered line)
/*
 * UTF-32 stream functions
 *
 * Copyright (C) 2008-2022, 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 <types.h>

#include "libuna_definitions.h"
#include "libuna_libcerror.h"
#include "libuna_types.h"
#include "libuna_unicode_character.h"
#include "libuna_utf32_stream.h"

/* Copies an UTF-32 stream byte order mark (BOM)
 * Returns 1 if successful or -1 on error
 */
int libuna_utf32_stream_copy_byte_order_mark(
     uint8_t *utf32_stream,
     size_t utf32_stream_size,
     size_t *utf32_stream_index,
     int byte_order,
     libcerror_error_t **error )
{
  static char *function = "libuna_utf32_stream_copy_byte_order_mark";

  if( utf32_stream == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
     "%s: invalid UTF-32 stream.",
     function );

    return( -1 );
  }
  if( utf32_stream_size > (size_t) SSIZE_MAX )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
     "%s: invalid UTF-32 stream size value exceeds maximum.",
     function );

    return( -1 );
  }
  if( utf32_stream_index == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
     "%s: invalid UTF-32 stream index.",
     function );

    return( -1 );
  }
  if( ( *utf32_stream_index + 4 ) > utf32_stream_size )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL,
     "%s: UTF-32 stream too small.",
     function );

    return( -1 );
  }
  if( ( byte_order != LIBUNA_ENDIAN_BIG )
   && ( byte_order != LIBUNA_ENDIAN_LITTLE ) )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE,
     "%s: unsupported byte order.",
     function );

    return( -1 );
  }
  if( byte_order == LIBUNA_ENDIAN_BIG )
  {
    utf32_stream[ *utf32_stream_index     ] = 0x00;
    utf32_stream[ *utf32_stream_index + 1 ] = 0x00;
    utf32_stream[ *utf32_stream_index + 2 ] = 0xfe;
    utf32_stream[ *utf32_stream_index + 3 ] = 0xff;
  }
  else if( byte_order == LIBUNA_ENDIAN_LITTLE )
  {
    utf32_stream[ *utf32_stream_index     ] = 0xff;
    utf32_stream[ *utf32_stream_index + 1 ] = 0xfe;
    utf32_stream[ *utf32_stream_index + 2 ] = 0x00;
    utf32_stream[ *utf32_stream_index + 3 ] = 0x00;
  }
  *utf32_stream_index += 4;

  return( 1 );
}

/* Determines the size of an UTF-32 stream from an UTF-8 string
 * Returns 1 if successful or -1 on error
 */
int libuna_utf32_stream_size_from_utf8(
     const libuna_utf8_character_t *utf8_string,
     size_t utf8_string_size,
     size_t *utf32_stream_size,
     libcerror_error_t **error )
{
  static char *function                        = "libuna_utf32_stream_size_from_utf8";
  libuna_unicode_character_t unicode_character = 0;
  size_t utf8_string_index                     = 0;

  if( utf8_string == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
     "%s: invalid UTF-8 string.",
     function );

    return( -1 );
  }
  if( utf8_string_size > (size_t) SSIZE_MAX )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
     "%s: invalid UTF-8 string size value exceeds maximum.",
     function );

    return( -1 );
  }
  if( utf32_stream_size == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
     "%s: invalid UTF-32 stream size.",
     function );

    return( -1 );
  }
  /* Add the byte order mark
   */
  *utf32_stream_size = 1;

  while( utf8_string_index < utf8_string_size )
  {
    /* Convert the UTF-8 character bytes into an Unicode character
     */
    if( libuna_unicode_character_copy_from_utf8(
         &unicode_character,
         utf8_string,
         utf8_string_size,
         &utf8_string_index,
         error ) != 1 )
    {
      libcerror_error_set(
       error,
       LIBCERROR_ERROR_DOMAIN_CONVERSION,
       LIBCERROR_CONVERSION_ERROR_INPUT_FAILED,
       "%s: unable to copy Unicode character from UTF-8.",
       function );

      return( -1 );
    }
    /* Determine how many UTF-32 character bytes are required
     */
    if( libuna_unicode_character_size_to_utf32(
         unicode_character,
         utf32_stream_size,
         error ) != 1 )
    {
      libcerror_error_set(
       error,
       LIBCERROR_ERROR_DOMAIN_CONVERSION,
       LIBCERROR_CONVERSION_ERROR_OUTPUT_FAILED,
       "%s: unable to determine size of Unicode character in UTF-32.",
       function );

      return( -1 );
    }
    if( unicode_character == 0 )
    {
      break;
    }
  }
  /* Convert the number of characters into bytes
   */
  *utf32_stream_size *= 4;

  return( 1 );
}

/* Copies an UTF-32 stream from an UTF-8 string
 * Returns 1 if successful or -1 on error
 */
int libuna_utf32_stream_copy_from_utf8(
     uint8_t *utf32_stream,
     size_t utf32_stream_size,
     int byte_order,
     const libuna_utf8_character_t *utf8_string,
     size_t utf8_string_size,
     libcerror_error_t **error )
{
  static char *function                        = "libuna_utf32_stream_copy_from_utf8";
  libuna_unicode_character_t unicode_character = 0;
  size_t utf32_stream_index                    = 0;
  size_t utf8_string_index                     = 0;

  if( utf32_stream == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
     "%s: invalid UTF-32 stream.",
     function );

    return( -1 );
  }
  if( utf32_stream_size > (size_t) SSIZE_MAX )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
     "%s: invalid UTF-32 stream size value exceeds maximum.",
     function );

    return( -1 );
  }
  if( ( byte_order != LIBUNA_ENDIAN_BIG )
   && ( byte_order != LIBUNA_ENDIAN_LITTLE ) )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE,
     "%s: unsupported byte order.",
     function );

    return( -1 );
  }
  if( utf8_string == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
     "%s: invalid UTF-8 string.",
     function );

    return( -1 );
  }
  if( utf8_string_size > (size_t) SSIZE_MAX )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
     "%s: invalid UTF-8 string size value exceeds maximum.",
     function );

    return( -1 );
  }
  if( libuna_utf32_stream_copy_byte_order_mark(
       utf32_stream,
       utf32_stream_size,
       &utf32_stream_index,
       byte_order,
       error ) != 1 )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_CONVERSION,
     LIBCERROR_CONVERSION_ERROR_OUTPUT_FAILED,
     "%s: unable to copy UTF-32 byte order mark.",
     function );

    return( -1 );
  }
  while( utf8_string_index < utf8_string_size )
  {
    /* Convert the UTF-8 string bytes into an Unicode character
     */
    if( libuna_unicode_character_copy_from_utf8(
         &unicode_character,
         utf8_string,
         utf8_string_size,
         &utf8_string_index,
         error ) != 1 )
    {
      libcerror_error_set(
       error,
       LIBCERROR_ERROR_DOMAIN_CONVERSION,
       LIBCERROR_CONVERSION_ERROR_INPUT_FAILED,
       "%s: unable to copy Unicode character from UTF-8 string.",
       function );

      return( -1 );
    }
    /* Convert the Unicode character into UTF-32 stream bytes
     */
    if( libuna_unicode_character_copy_to_utf32_stream(
         unicode_character,
         utf32_stream,
         utf32_stream_size,
         &utf32_stream_index,
         byte_order,
         error ) != 1 )
    {
      libcerror_error_set(
       error,
       LIBCERROR_ERROR_DOMAIN_CONVERSION,
       LIBCERROR_CONVERSION_ERROR_OUTPUT_FAILED,
       "%s: unable to copy Unicode character to UTF-32 stream.",
       function );

      return( -1 );
    }
    if( unicode_character == 0 )
    {
      break;
    }
  }
  return( 1 );
}

/* Determines the size of an UTF-32 stream from an UTF-16 string
 * Returns 1 if successful or -1 on error
 */
int libuna_utf32_stream_size_from_utf16(
     const libuna_utf16_character_t *utf16_string,
     size_t utf16_string_size,
     size_t *utf32_stream_size,
     libcerror_error_t **error )
{
  static char *function                        = "libuna_utf32_stream_size_from_utf16";
  libuna_unicode_character_t unicode_character = 0;
  size_t utf16_string_index                    = 0;

  if( utf16_string == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
     "%s: invalid UTF-16 string.",
     function );

    return( -1 );
  }
  if( utf16_string_size > (size_t) SSIZE_MAX )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
     "%s: invalid UTF-16 string size value exceeds maximum.",
     function );

    return( -1 );
  }
  if( utf32_stream_size == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
     "%s: invalid UTF-32 stream size.",
     function );

    return( -1 );
  }
  /* Add the byte order mark
   */
  *utf32_stream_size = 1;

  while( utf16_string_index < utf16_string_size )
  {
    /* Convert the UTF-16 character bytes into an Unicode character
     */
    if( libuna_unicode_character_copy_from_utf16(
         &unicode_character,
         utf16_string,
         utf16_string_size,
         &utf16_string_index,
         error ) != 1 )
    {
      libcerror_error_set(
       error,
       LIBCERROR_ERROR_DOMAIN_CONVERSION,
       LIBCERROR_CONVERSION_ERROR_INPUT_FAILED,
       "%s: unable to copy Unicode character from UTF-16.",
       function );

      return( -1 );
    }
    /* Determine how many UTF-32 character bytes are required
     */
    if( libuna_unicode_character_size_to_utf32(
         unicode_character,
         utf32_stream_size,
         error ) != 1 )
    {
      libcerror_error_set(
       error,
       LIBCERROR_ERROR_DOMAIN_CONVERSION,
       LIBCERROR_CONVERSION_ERROR_OUTPUT_FAILED,
       "%s: unable to determine size of Unicode character in UTF-32.",
       function );

      return( -1 );
    }
    if( unicode_character == 0 )
    {
      break;
    }
  }
  /* Convert the number of characters into bytes
   */
  *utf32_stream_size *= 4;

  return( 1 );
}

/* Copies an UTF-32 stream from an UTF-16 string
 * Returns 1 if successful or -1 on error
 */
int libuna_utf32_stream_copy_from_utf16(
     uint8_t *utf32_stream,
     size_t utf32_stream_size,
     int byte_order,
     const libuna_utf16_character_t *utf16_string,
     size_t utf16_string_size,
     libcerror_error_t **error )
{
  static char *function                        = "libuna_utf32_stream_copy_from_utf16";
  libuna_unicode_character_t unicode_character = 0;
  size_t utf16_string_index                    = 0;
  size_t utf32_stream_index                    = 0;

  if( utf32_stream == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
     "%s: invalid UTF-32 stream.",
     function );

    return( -1 );
  }
  if( utf32_stream_size > (size_t) SSIZE_MAX )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
     "%s: invalid UTF-32 stream size value exceeds maximum.",
     function );

    return( -1 );
  }
  if( ( byte_order != LIBUNA_ENDIAN_BIG )
   && ( byte_order != LIBUNA_ENDIAN_LITTLE ) )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE,
     "%s: unsupported byte order.",
     function );

    return( -1 );
  }
  if( utf16_string == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
     "%s: invalid UTF-16 string.",
     function );

    return( -1 );
  }
  if( utf16_string_size > (size_t) SSIZE_MAX )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
     "%s: invalid UTF-16 string size value exceeds maximum.",
     function );

    return( -1 );
  }
  if( libuna_utf32_stream_copy_byte_order_mark(
       utf32_stream,
       utf32_stream_size,
       &utf32_stream_index,
       byte_order,
       error ) != 1 )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_CONVERSION,
     LIBCERROR_CONVERSION_ERROR_OUTPUT_FAILED,
     "%s: unable to copy UTF-32 byte order mark.",
     function );

    return( -1 );
  }
  while( utf16_string_index < utf16_string_size )
  {
    /* Convert the UTF-16 string bytes into an Unicode character
     */
    if( libuna_unicode_character_copy_from_utf16(
         &unicode_character,
         utf16_string,
         utf16_string_size,
         &utf16_string_index,
         error ) != 1 )
    {
      libcerror_error_set(
       error,
       LIBCERROR_ERROR_DOMAIN_CONVERSION,
       LIBCERROR_CONVERSION_ERROR_INPUT_FAILED,
       "%s: unable to copy Unicode character from UTF-16 string.",
       function );

      return( -1 );
    }
    /* Convert the Unicode character into UTF-32 stream bytes
     */
    if( libuna_unicode_character_copy_to_utf32_stream(
         unicode_character,
         utf32_stream,
         utf32_stream_size,
         &utf32_stream_index,
         byte_order,
         error ) != 1 )
    {
      libcerror_error_set(
       error,
       LIBCERROR_ERROR_DOMAIN_CONVERSION,
       LIBCERROR_CONVERSION_ERROR_OUTPUT_FAILED,
       "%s: unable to copy Unicode character to UTF-32 stream.",
       function );

      return( -1 );
    }
    if( unicode_character == 0 )
    {
      break;
    }
  }
  return( 1 );
}

/* Determines the size of an UTF-32 stream from an UTF-32 string
 * Returns 1 if successful or -1 on error
 */
int libuna_utf32_stream_size_from_utf32(
     const libuna_utf32_character_t *utf32_string,
     size_t utf32_string_size,
     size_t *utf32_stream_size,
     libcerror_error_t **error )
{
  static char *function                        = "libuna_utf32_stream_size_from_utf32";
  libuna_unicode_character_t unicode_character = 0;
  size_t utf32_string_index                    = 0;

  if( utf32_string == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
     "%s: invalid UTF-32 string.",
     function );

    return( -1 );
  }
  if( utf32_string_size > (size_t) SSIZE_MAX )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
     "%s: invalid UTF-32 string size value exceeds maximum.",
     function );

    return( -1 );
  }
  if( utf32_stream_size == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
     "%s: invalid UTF-32 stream size.",
     function );

    return( -1 );
  }
  /* Add the byte order mark
   */
  *utf32_stream_size = 1;

  while( utf32_string_index < utf32_string_size )
  {
    /* Convert the UTF-32 character bytes into an Unicode character
     */
    if( libuna_unicode_character_copy_from_utf32(
         &unicode_character,
         utf32_string,
         utf32_string_size,
         &utf32_string_index,
         error ) != 1 )
    {
      libcerror_error_set(
       error,
       LIBCERROR_ERROR_DOMAIN_CONVERSION,
       LIBCERROR_CONVERSION_ERROR_INPUT_FAILED,
       "%s: unable to copy Unicode character from UTF-32.",
       function );

      return( -1 );
    }
    /* Determine how many UTF-32 character bytes are required
     */
    if( libuna_unicode_character_size_to_utf32(
         unicode_character,
         utf32_stream_size,
         error ) != 1 )
    {
      libcerror_error_set(
       error,
       LIBCERROR_ERROR_DOMAIN_CONVERSION,
       LIBCERROR_CONVERSION_ERROR_OUTPUT_FAILED,
       "%s: unable to determine size of Unicode character in UTF-32.",
       function );

      return( -1 );
    }
    if( unicode_character == 0 )
    {
      break;
    }
  }
  /* Convert the number of characters into bytes
   */
  *utf32_stream_size *= 4;

  return( 1 );
}

/* Copies an UTF-32 stream from an UTF-32 string
 * Returns 1 if successful or -1 on error
 */
int libuna_utf32_stream_copy_from_utf32(
     uint8_t *utf32_stream,
     size_t utf32_stream_size,
     int byte_order,
     const libuna_utf32_character_t *utf32_string,
     size_t utf32_string_size,
     libcerror_error_t **error )
{
  static char *function                        = "libuna_utf32_stream_copy_from_utf32";
  libuna_unicode_character_t unicode_character = 0;
  size_t utf32_stream_index                    = 0;
  size_t utf32_string_index                    = 0;

  if( utf32_stream == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
     "%s: invalid UTF-32 stream.",
     function );

    return( -1 );
  }
  if( utf32_stream_size > (size_t) SSIZE_MAX )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
     "%s: invalid UTF-32 stream size value exceeds maximum.",
     function );

    return( -1 );
  }
  if( ( byte_order != LIBUNA_ENDIAN_BIG )
   && ( byte_order != LIBUNA_ENDIAN_LITTLE ) )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE,
     "%s: unsupported byte order.",
     function );

    return( -1 );
  }
  if( utf32_string == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
     "%s: invalid UTF-32 string.",
     function );

    return( -1 );
  }
  if( utf32_string_size > (size_t) SSIZE_MAX )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
     "%s: invalid UTF-32 string size value exceeds maximum.",
     function );

    return( -1 );
  }
  if( libuna_utf32_stream_copy_byte_order_mark(
       utf32_stream,
       utf32_stream_size,
       &utf32_stream_index,
       byte_order,
       error ) != 1 )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_CONVERSION,
     LIBCERROR_CONVERSION_ERROR_OUTPUT_FAILED,
     "%s: unable to copy UTF-32 byte order mark.",
     function );

    return( -1 );
  }
  while( utf32_string_index < utf32_string_size )
  {
    /* Convert the UTF-32 string bytes into an Unicode character
     */
    if( libuna_unicode_character_copy_from_utf32(
         &unicode_character,
         utf32_string,
         utf32_string_size,
         &utf32_string_index,
         error ) != 1 )
    {
      libcerror_error_set(
       error,
       LIBCERROR_ERROR_DOMAIN_CONVERSION,
       LIBCERROR_CONVERSION_ERROR_INPUT_FAILED,
       "%s: unable to copy Unicode character from UTF-32 string.",
       function );

      return( -1 );
    }
    /* Convert the Unicode character into UTF-32 stream bytes
     */
    if( libuna_unicode_character_copy_to_utf32_stream(
         unicode_character,
         utf32_stream,
         utf32_stream_size,
         &utf32_stream_index,
         byte_order,
         error ) != 1 )
    {
      libcerror_error_set(
       error,
       LIBCERROR_ERROR_DOMAIN_CONVERSION,
       LIBCERROR_CONVERSION_ERROR_OUTPUT_FAILED,
       "%s: unable to copy Unicode character to UTF-32 stream.",
       function );

      return( -1 );
    }
    if( unicode_character == 0 )
    {
      break;
    }
  }
  return( 1 );
}


Coverage Report

Created: 2023-06-07 06:53

Line	Count	Source (jump to first uncovered line)
1		/*
2		* UTF-32 stream functions
3		*
4		* Copyright (C) 2008-2022, Joachim Metz <joachim.metz@gmail.com>
5		*
6		* Refer to AUTHORS for acknowledgements.
7		*
8		* This program is free software: you can redistribute it and/or modify
9		* it under the terms of the GNU Lesser General Public License as published by
10		* the Free Software Foundation, either version 3 of the License, or
11		* (at your option) any later version.
12		*
13		* This program is distributed in the hope that it will be useful,
14		* but WITHOUT ANY WARRANTY; without even the implied warranty of
15		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16		* GNU General Public License for more details.
17		*
18		* You should have received a copy of the GNU Lesser General Public License
19		* along with this program. If not, see <https://www.gnu.org/licenses/>.
20		*/
21
22		#include <common.h>
23		#include <types.h>
24
25		#include "libuna_definitions.h"
26		#include "libuna_libcerror.h"
27		#include "libuna_types.h"
28		#include "libuna_unicode_character.h"
29		#include "libuna_utf32_stream.h"
30
31		/* Copies an UTF-32 stream byte order mark (BOM)
32		* Returns 1 if successful or -1 on error
33		*/
34		int libuna_utf32_stream_copy_byte_order_mark(
35		uint8_t *utf32_stream,
36		size_t utf32_stream_size,
37		size_t *utf32_stream_index,
38		int byte_order,
39		libcerror_error_t **error )
40	0	{
41	0	static char *function = "libuna_utf32_stream_copy_byte_order_mark";
42
43	0	if( utf32_stream == NULL )
44	0	{
45	0	libcerror_error_set(
46	0	error,
47	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
48	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
49	0	"%s: invalid UTF-32 stream.",
50	0	function );
51
52	0	return( -1 );
53	0	}
54	0	if( utf32_stream_size > (size_t) SSIZE_MAX )
55	0	{
56	0	libcerror_error_set(
57	0	error,
58	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
59	0	LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
60	0	"%s: invalid UTF-32 stream size value exceeds maximum.",
61	0	function );
62
63	0	return( -1 );
64	0	}
65	0	if( utf32_stream_index == NULL )
66	0	{
67	0	libcerror_error_set(
68	0	error,
69	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
70	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
71	0	"%s: invalid UTF-32 stream index.",
72	0	function );
73
74	0	return( -1 );
75	0	}
76	0	if( ( *utf32_stream_index + 4 ) > utf32_stream_size )
77	0	{
78	0	libcerror_error_set(
79	0	error,
80	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
81	0	LIBCERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL,
82	0	"%s: UTF-32 stream too small.",
83	0	function );
84
85	0	return( -1 );
86	0	}
87	0	if( ( byte_order != LIBUNA_ENDIAN_BIG )
88	0	&& ( byte_order != LIBUNA_ENDIAN_LITTLE ) )
89	0	{
90	0	libcerror_error_set(
91	0	error,
92	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
93	0	LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE,
94	0	"%s: unsupported byte order.",
95	0	function );
96
97	0	return( -1 );
98	0	}
99	0	if( byte_order == LIBUNA_ENDIAN_BIG )
100	0	{
101	0	utf32_stream[ *utf32_stream_index ] = 0x00;
102	0	utf32_stream[ *utf32_stream_index + 1 ] = 0x00;
103	0	utf32_stream[ *utf32_stream_index + 2 ] = 0xfe;
104	0	utf32_stream[ *utf32_stream_index + 3 ] = 0xff;
105	0	}
106	0	else if( byte_order == LIBUNA_ENDIAN_LITTLE )
107	0	{
108	0	utf32_stream[ *utf32_stream_index ] = 0xff;
109	0	utf32_stream[ *utf32_stream_index + 1 ] = 0xfe;
110	0	utf32_stream[ *utf32_stream_index + 2 ] = 0x00;
111	0	utf32_stream[ *utf32_stream_index + 3 ] = 0x00;
112	0	}
113	0	*utf32_stream_index += 4;
114
115	0	return( 1 );
116	0	}
117
118		/* Determines the size of an UTF-32 stream from an UTF-8 string
119		* Returns 1 if successful or -1 on error
120		*/
121		int libuna_utf32_stream_size_from_utf8(
122		const libuna_utf8_character_t *utf8_string,
123		size_t utf8_string_size,
124		size_t *utf32_stream_size,
125		libcerror_error_t **error )
126	0	{
127	0	static char *function = "libuna_utf32_stream_size_from_utf8";
128	0	libuna_unicode_character_t unicode_character = 0;
129	0	size_t utf8_string_index = 0;
130
131	0	if( utf8_string == NULL )
132	0	{
133	0	libcerror_error_set(
134	0	error,
135	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
136	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
137	0	"%s: invalid UTF-8 string.",
138	0	function );
139
140	0	return( -1 );
141	0	}
142	0	if( utf8_string_size > (size_t) SSIZE_MAX )
143	0	{
144	0	libcerror_error_set(
145	0	error,
146	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
147	0	LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
148	0	"%s: invalid UTF-8 string size value exceeds maximum.",
149	0	function );
150
151	0	return( -1 );
152	0	}
153	0	if( utf32_stream_size == NULL )
154	0	{
155	0	libcerror_error_set(
156	0	error,
157	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
158	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
159	0	"%s: invalid UTF-32 stream size.",
160	0	function );
161
162	0	return( -1 );
163	0	}
164		/* Add the byte order mark
165		*/
166	0	*utf32_stream_size = 1;
167
168	0	while( utf8_string_index < utf8_string_size )
169	0	{
170		/* Convert the UTF-8 character bytes into an Unicode character
171		*/
172	0	if( libuna_unicode_character_copy_from_utf8(
173	0	&unicode_character,
174	0	utf8_string,
175	0	utf8_string_size,
176	0	&utf8_string_index,
177	0	error ) != 1 )
178	0	{
179	0	libcerror_error_set(
180	0	error,
181	0	LIBCERROR_ERROR_DOMAIN_CONVERSION,
182	0	LIBCERROR_CONVERSION_ERROR_INPUT_FAILED,
183	0	"%s: unable to copy Unicode character from UTF-8.",
184	0	function );
185
186	0	return( -1 );
187	0	}
188		/* Determine how many UTF-32 character bytes are required
189		*/
190	0	if( libuna_unicode_character_size_to_utf32(
191	0	unicode_character,
192	0	utf32_stream_size,
193	0	error ) != 1 )
194	0	{
195	0	libcerror_error_set(
196	0	error,
197	0	LIBCERROR_ERROR_DOMAIN_CONVERSION,
198	0	LIBCERROR_CONVERSION_ERROR_OUTPUT_FAILED,
199	0	"%s: unable to determine size of Unicode character in UTF-32.",
200	0	function );
201
202	0	return( -1 );
203	0	}
204	0	if( unicode_character == 0 )
205	0	{
206	0	break;
207	0	}
208	0	}
209		/* Convert the number of characters into bytes
210		*/
211	0	utf32_stream_size = 4;
212
213	0	return( 1 );
214	0	}
215
216		/* Copies an UTF-32 stream from an UTF-8 string
217		* Returns 1 if successful or -1 on error
218		*/
219		int libuna_utf32_stream_copy_from_utf8(
220		uint8_t *utf32_stream,
221		size_t utf32_stream_size,
222		int byte_order,
223		const libuna_utf8_character_t *utf8_string,
224		size_t utf8_string_size,
225		libcerror_error_t **error )
226	0	{
227	0	static char *function = "libuna_utf32_stream_copy_from_utf8";
228	0	libuna_unicode_character_t unicode_character = 0;
229	0	size_t utf32_stream_index = 0;
230	0	size_t utf8_string_index = 0;
231
232	0	if( utf32_stream == NULL )
233	0	{
234	0	libcerror_error_set(
235	0	error,
236	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
237	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
238	0	"%s: invalid UTF-32 stream.",
239	0	function );
240
241	0	return( -1 );
242	0	}
243	0	if( utf32_stream_size > (size_t) SSIZE_MAX )
244	0	{
245	0	libcerror_error_set(
246	0	error,
247	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
248	0	LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
249	0	"%s: invalid UTF-32 stream size value exceeds maximum.",
250	0	function );
251
252	0	return( -1 );
253	0	}
254	0	if( ( byte_order != LIBUNA_ENDIAN_BIG )
255	0	&& ( byte_order != LIBUNA_ENDIAN_LITTLE ) )
256	0	{
257	0	libcerror_error_set(
258	0	error,
259	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
260	0	LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE,
261	0	"%s: unsupported byte order.",
262	0	function );
263
264	0	return( -1 );
265	0	}
266	0	if( utf8_string == NULL )
267	0	{
268	0	libcerror_error_set(
269	0	error,
270	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
271	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
272	0	"%s: invalid UTF-8 string.",
273	0	function );
274
275	0	return( -1 );
276	0	}
277	0	if( utf8_string_size > (size_t) SSIZE_MAX )
278	0	{
279	0	libcerror_error_set(
280	0	error,
281	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
282	0	LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
283	0	"%s: invalid UTF-8 string size value exceeds maximum.",
284	0	function );
285
286	0	return( -1 );
287	0	}
288	0	if( libuna_utf32_stream_copy_byte_order_mark(
289	0	utf32_stream,
290	0	utf32_stream_size,
291	0	&utf32_stream_index,
292	0	byte_order,
293	0	error ) != 1 )
294	0	{
295	0	libcerror_error_set(
296	0	error,
297	0	LIBCERROR_ERROR_DOMAIN_CONVERSION,
298	0	LIBCERROR_CONVERSION_ERROR_OUTPUT_FAILED,
299	0	"%s: unable to copy UTF-32 byte order mark.",
300	0	function );
301
302	0	return( -1 );
303	0	}
304	0	while( utf8_string_index < utf8_string_size )
305	0	{
306		/* Convert the UTF-8 string bytes into an Unicode character
307		*/
308	0	if( libuna_unicode_character_copy_from_utf8(
309	0	&unicode_character,
310	0	utf8_string,
311	0	utf8_string_size,
312	0	&utf8_string_index,
313	0	error ) != 1 )
314	0	{
315	0	libcerror_error_set(
316	0	error,
317	0	LIBCERROR_ERROR_DOMAIN_CONVERSION,
318	0	LIBCERROR_CONVERSION_ERROR_INPUT_FAILED,
319	0	"%s: unable to copy Unicode character from UTF-8 string.",
320	0	function );
321
322	0	return( -1 );
323	0	}
324		/* Convert the Unicode character into UTF-32 stream bytes
325		*/
326	0	if( libuna_unicode_character_copy_to_utf32_stream(
327	0	unicode_character,
328	0	utf32_stream,
329	0	utf32_stream_size,
330	0	&utf32_stream_index,
331	0	byte_order,
332	0	error ) != 1 )
333	0	{
334	0	libcerror_error_set(
335	0	error,
336	0	LIBCERROR_ERROR_DOMAIN_CONVERSION,
337	0	LIBCERROR_CONVERSION_ERROR_OUTPUT_FAILED,
338	0	"%s: unable to copy Unicode character to UTF-32 stream.",
339	0	function );
340
341	0	return( -1 );
342	0	}
343	0	if( unicode_character == 0 )
344	0	{
345	0	break;
346	0	}
347	0	}
348	0	return( 1 );
349	0	}
350
351		/* Determines the size of an UTF-32 stream from an UTF-16 string
352		* Returns 1 if successful or -1 on error
353		*/
354		int libuna_utf32_stream_size_from_utf16(
355		const libuna_utf16_character_t *utf16_string,
356		size_t utf16_string_size,
357		size_t *utf32_stream_size,
358		libcerror_error_t **error )
359	0	{
360	0	static char *function = "libuna_utf32_stream_size_from_utf16";
361	0	libuna_unicode_character_t unicode_character = 0;
362	0	size_t utf16_string_index = 0;
363
364	0	if( utf16_string == NULL )
365	0	{
366	0	libcerror_error_set(
367	0	error,
368	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
369	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
370	0	"%s: invalid UTF-16 string.",
371	0	function );
372
373	0	return( -1 );
374	0	}
375	0	if( utf16_string_size > (size_t) SSIZE_MAX )
376	0	{
377	0	libcerror_error_set(
378	0	error,
379	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
380	0	LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
381	0	"%s: invalid UTF-16 string size value exceeds maximum.",
382	0	function );
383
384	0	return( -1 );
385	0	}
386	0	if( utf32_stream_size == NULL )
387	0	{
388	0	libcerror_error_set(
389	0	error,
390	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
391	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
392	0	"%s: invalid UTF-32 stream size.",
393	0	function );
394
395	0	return( -1 );
396	0	}
397		/* Add the byte order mark
398		*/
399	0	*utf32_stream_size = 1;
400
401	0	while( utf16_string_index < utf16_string_size )
402	0	{
403		/* Convert the UTF-16 character bytes into an Unicode character
404		*/
405	0	if( libuna_unicode_character_copy_from_utf16(
406	0	&unicode_character,
407	0	utf16_string,
408	0	utf16_string_size,
409	0	&utf16_string_index,
410	0	error ) != 1 )
411	0	{
412	0	libcerror_error_set(
413	0	error,
414	0	LIBCERROR_ERROR_DOMAIN_CONVERSION,
415	0	LIBCERROR_CONVERSION_ERROR_INPUT_FAILED,
416	0	"%s: unable to copy Unicode character from UTF-16.",
417	0	function );
418
419	0	return( -1 );
420	0	}
421		/* Determine how many UTF-32 character bytes are required
422		*/
423	0	if( libuna_unicode_character_size_to_utf32(
424	0	unicode_character,
425	0	utf32_stream_size,
426	0	error ) != 1 )
427	0	{
428	0	libcerror_error_set(
429	0	error,
430	0	LIBCERROR_ERROR_DOMAIN_CONVERSION,
431	0	LIBCERROR_CONVERSION_ERROR_OUTPUT_FAILED,
432	0	"%s: unable to determine size of Unicode character in UTF-32.",
433	0	function );
434
435	0	return( -1 );
436	0	}
437	0	if( unicode_character == 0 )
438	0	{
439	0	break;
440	0	}
441	0	}
442		/* Convert the number of characters into bytes
443		*/
444	0	utf32_stream_size = 4;
445
446	0	return( 1 );
447	0	}
448
449		/* Copies an UTF-32 stream from an UTF-16 string
450		* Returns 1 if successful or -1 on error
451		*/
452		int libuna_utf32_stream_copy_from_utf16(
453		uint8_t *utf32_stream,
454		size_t utf32_stream_size,
455		int byte_order,
456		const libuna_utf16_character_t *utf16_string,
457		size_t utf16_string_size,
458		libcerror_error_t **error )
459	0	{
460	0	static char *function = "libuna_utf32_stream_copy_from_utf16";
461	0	libuna_unicode_character_t unicode_character = 0;
462	0	size_t utf16_string_index = 0;
463	0	size_t utf32_stream_index = 0;
464
465	0	if( utf32_stream == NULL )
466	0	{
467	0	libcerror_error_set(
468	0	error,
469	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
470	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
471	0	"%s: invalid UTF-32 stream.",
472	0	function );
473
474	0	return( -1 );
475	0	}
476	0	if( utf32_stream_size > (size_t) SSIZE_MAX )
477	0	{
478	0	libcerror_error_set(
479	0	error,
480	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
481	0	LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
482	0	"%s: invalid UTF-32 stream size value exceeds maximum.",
483	0	function );
484
485	0	return( -1 );
486	0	}
487	0	if( ( byte_order != LIBUNA_ENDIAN_BIG )
488	0	&& ( byte_order != LIBUNA_ENDIAN_LITTLE ) )
489	0	{
490	0	libcerror_error_set(
491	0	error,
492	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
493	0	LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE,
494	0	"%s: unsupported byte order.",
495	0	function );
496
497	0	return( -1 );
498	0	}
499	0	if( utf16_string == NULL )
500	0	{
501	0	libcerror_error_set(
502	0	error,
503	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
504	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
505	0	"%s: invalid UTF-16 string.",
506	0	function );
507
508	0	return( -1 );
509	0	}
510	0	if( utf16_string_size > (size_t) SSIZE_MAX )
511	0	{
512	0	libcerror_error_set(
513	0	error,
514	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
515	0	LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
516	0	"%s: invalid UTF-16 string size value exceeds maximum.",
517	0	function );
518
519	0	return( -1 );
520	0	}
521	0	if( libuna_utf32_stream_copy_byte_order_mark(
522	0	utf32_stream,
523	0	utf32_stream_size,
524	0	&utf32_stream_index,
525	0	byte_order,
526	0	error ) != 1 )
527	0	{
528	0	libcerror_error_set(
529	0	error,
530	0	LIBCERROR_ERROR_DOMAIN_CONVERSION,
531	0	LIBCERROR_CONVERSION_ERROR_OUTPUT_FAILED,
532	0	"%s: unable to copy UTF-32 byte order mark.",
533	0	function );
534
535	0	return( -1 );
536	0	}
537	0	while( utf16_string_index < utf16_string_size )
538	0	{
539		/* Convert the UTF-16 string bytes into an Unicode character
540		*/
541	0	if( libuna_unicode_character_copy_from_utf16(
542	0	&unicode_character,
543	0	utf16_string,
544	0	utf16_string_size,
545	0	&utf16_string_index,
546	0	error ) != 1 )
547	0	{
548	0	libcerror_error_set(
549	0	error,
550	0	LIBCERROR_ERROR_DOMAIN_CONVERSION,
551	0	LIBCERROR_CONVERSION_ERROR_INPUT_FAILED,
552	0	"%s: unable to copy Unicode character from UTF-16 string.",
553	0	function );
554
555	0	return( -1 );
556	0	}
557		/* Convert the Unicode character into UTF-32 stream bytes
558		*/
559	0	if( libuna_unicode_character_copy_to_utf32_stream(
560	0	unicode_character,
561	0	utf32_stream,
562	0	utf32_stream_size,
563	0	&utf32_stream_index,
564	0	byte_order,
565	0	error ) != 1 )
566	0	{
567	0	libcerror_error_set(
568	0	error,
569	0	LIBCERROR_ERROR_DOMAIN_CONVERSION,
570	0	LIBCERROR_CONVERSION_ERROR_OUTPUT_FAILED,
571	0	"%s: unable to copy Unicode character to UTF-32 stream.",
572	0	function );
573
574	0	return( -1 );
575	0	}
576	0	if( unicode_character == 0 )
577	0	{
578	0	break;
579	0	}
580	0	}
581	0	return( 1 );
582	0	}
583
584		/* Determines the size of an UTF-32 stream from an UTF-32 string
585		* Returns 1 if successful or -1 on error
586		*/
587		int libuna_utf32_stream_size_from_utf32(
588		const libuna_utf32_character_t *utf32_string,
589		size_t utf32_string_size,
590		size_t *utf32_stream_size,
591		libcerror_error_t **error )
592	0	{
593	0	static char *function = "libuna_utf32_stream_size_from_utf32";
594	0	libuna_unicode_character_t unicode_character = 0;
595	0	size_t utf32_string_index = 0;
596
597	0	if( utf32_string == NULL )
598	0	{
599	0	libcerror_error_set(
600	0	error,
601	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
602	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
603	0	"%s: invalid UTF-32 string.",
604	0	function );
605
606	0	return( -1 );
607	0	}
608	0	if( utf32_string_size > (size_t) SSIZE_MAX )
609	0	{
610	0	libcerror_error_set(
611	0	error,
612	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
613	0	LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
614	0	"%s: invalid UTF-32 string size value exceeds maximum.",
615	0	function );
616
617	0	return( -1 );
618	0	}
619	0	if( utf32_stream_size == NULL )
620	0	{
621	0	libcerror_error_set(
622	0	error,
623	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
624	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
625	0	"%s: invalid UTF-32 stream size.",
626	0	function );
627
628	0	return( -1 );
629	0	}
630		/* Add the byte order mark
631		*/
632	0	*utf32_stream_size = 1;
633
634	0	while( utf32_string_index < utf32_string_size )
635	0	{
636		/* Convert the UTF-32 character bytes into an Unicode character
637		*/
638	0	if( libuna_unicode_character_copy_from_utf32(
639	0	&unicode_character,
640	0	utf32_string,
641	0	utf32_string_size,
642	0	&utf32_string_index,
643	0	error ) != 1 )
644	0	{
645	0	libcerror_error_set(
646	0	error,
647	0	LIBCERROR_ERROR_DOMAIN_CONVERSION,
648	0	LIBCERROR_CONVERSION_ERROR_INPUT_FAILED,
649	0	"%s: unable to copy Unicode character from UTF-32.",
650	0	function );
651
652	0	return( -1 );
653	0	}
654		/* Determine how many UTF-32 character bytes are required
655		*/
656	0	if( libuna_unicode_character_size_to_utf32(
657	0	unicode_character,
658	0	utf32_stream_size,
659	0	error ) != 1 )
660	0	{
661	0	libcerror_error_set(
662	0	error,
663	0	LIBCERROR_ERROR_DOMAIN_CONVERSION,
664	0	LIBCERROR_CONVERSION_ERROR_OUTPUT_FAILED,
665	0	"%s: unable to determine size of Unicode character in UTF-32.",
666	0	function );
667
668	0	return( -1 );
669	0	}
670	0	if( unicode_character == 0 )
671	0	{
672	0	break;
673	0	}
674	0	}
675		/* Convert the number of characters into bytes
676		*/
677	0	utf32_stream_size = 4;
678
679	0	return( 1 );
680	0	}
681
682		/* Copies an UTF-32 stream from an UTF-32 string
683		* Returns 1 if successful or -1 on error
684		*/
685		int libuna_utf32_stream_copy_from_utf32(
686		uint8_t *utf32_stream,
687		size_t utf32_stream_size,
688		int byte_order,
689		const libuna_utf32_character_t *utf32_string,
690		size_t utf32_string_size,
691		libcerror_error_t **error )
692	0	{
693	0	static char *function = "libuna_utf32_stream_copy_from_utf32";
694	0	libuna_unicode_character_t unicode_character = 0;
695	0	size_t utf32_stream_index = 0;
696	0	size_t utf32_string_index = 0;
697
698	0	if( utf32_stream == NULL )
699	0	{
700	0	libcerror_error_set(
701	0	error,
702	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
703	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
704	0	"%s: invalid UTF-32 stream.",
705	0	function );
706
707	0	return( -1 );
708	0	}
709	0	if( utf32_stream_size > (size_t) SSIZE_MAX )
710	0	{
711	0	libcerror_error_set(
712	0	error,
713	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
714	0	LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
715	0	"%s: invalid UTF-32 stream size value exceeds maximum.",
716	0	function );
717
718	0	return( -1 );
719	0	}
720	0	if( ( byte_order != LIBUNA_ENDIAN_BIG )
721	0	&& ( byte_order != LIBUNA_ENDIAN_LITTLE ) )
722	0	{
723	0	libcerror_error_set(
724	0	error,
725	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
726	0	LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE,
727	0	"%s: unsupported byte order.",
728	0	function );
729
730	0	return( -1 );
731	0	}
732	0	if( utf32_string == NULL )
733	0	{
734	0	libcerror_error_set(
735	0	error,
736	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
737	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
738	0	"%s: invalid UTF-32 string.",
739	0	function );
740
741	0	return( -1 );
742	0	}
743	0	if( utf32_string_size > (size_t) SSIZE_MAX )
744	0	{
745	0	libcerror_error_set(
746	0	error,
747	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
748	0	LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
749	0	"%s: invalid UTF-32 string size value exceeds maximum.",
750	0	function );
751
752	0	return( -1 );
753	0	}
754	0	if( libuna_utf32_stream_copy_byte_order_mark(
755	0	utf32_stream,
756	0	utf32_stream_size,
757	0	&utf32_stream_index,
758	0	byte_order,
759	0	error ) != 1 )
760	0	{
761	0	libcerror_error_set(
762	0	error,
763	0	LIBCERROR_ERROR_DOMAIN_CONVERSION,
764	0	LIBCERROR_CONVERSION_ERROR_OUTPUT_FAILED,
765	0	"%s: unable to copy UTF-32 byte order mark.",
766	0	function );
767
768	0	return( -1 );
769	0	}
770	0	while( utf32_string_index < utf32_string_size )
771	0	{
772		/* Convert the UTF-32 string bytes into an Unicode character
773		*/
774	0	if( libuna_unicode_character_copy_from_utf32(
775	0	&unicode_character,
776	0	utf32_string,
777	0	utf32_string_size,
778	0	&utf32_string_index,
779	0	error ) != 1 )
780	0	{
781	0	libcerror_error_set(
782	0	error,
783	0	LIBCERROR_ERROR_DOMAIN_CONVERSION,
784	0	LIBCERROR_CONVERSION_ERROR_INPUT_FAILED,
785	0	"%s: unable to copy Unicode character from UTF-32 string.",
786	0	function );
787
788	0	return( -1 );
789	0	}
790		/* Convert the Unicode character into UTF-32 stream bytes
791		*/
792	0	if( libuna_unicode_character_copy_to_utf32_stream(
793	0	unicode_character,
794	0	utf32_stream,
795	0	utf32_stream_size,
796	0	&utf32_stream_index,
797	0	byte_order,
798	0	error ) != 1 )
799	0	{
800	0	libcerror_error_set(
801	0	error,
802	0	LIBCERROR_ERROR_DOMAIN_CONVERSION,
803	0	LIBCERROR_CONVERSION_ERROR_OUTPUT_FAILED,
804	0	"%s: unable to copy Unicode character to UTF-32 stream.",
805	0	function );
806
807	0	return( -1 );
808	0	}
809	0	if( unicode_character == 0 )
810	0	{
811	0	break;
812	0	}
813	0	}
814	0	return( 1 );
815	0	}
816