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/* Test of u16_to_u8() function.
Copyright (C) 2010-2024 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU 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 General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Written by Bruno Haible <bruno@clisp.org>, 2010. */
#include <config.h>
#include "unistr.h"
#include <errno.h>
#include "macros.h"
static int
check (const uint16_t *input, size_t input_length,
const uint8_t *expected, size_t expected_length)
{
size_t length;
uint8_t *result;
/* Test return conventions with resultbuf == NULL. */
result = u16_to_u8 (input, input_length, NULL, &length);
if (!(result != NULL))
return 1;
if (!(length == expected_length))
return 2;
if (!(u8_cmp (result, expected, expected_length) == 0))
return 3;
free (result);
/* Test return conventions with resultbuf too small. */
if (expected_length > 0)
{
uint8_t *preallocated;
length = expected_length - 1;
preallocated = (uint8_t *) malloc (length * sizeof (uint8_t));
result = u16_to_u8 (input, input_length, preallocated, &length);
if (!(result != NULL))
return 4;
if (!(result != preallocated))
return 5;
if (!(length == expected_length))
return 6;
if (!(u8_cmp (result, expected, expected_length) == 0))
return 7;
free (result);
free (preallocated);
}
/* Test return conventions with resultbuf large enough. */
{
uint8_t *preallocated;
length = expected_length;
preallocated = (uint8_t *) malloc (length * sizeof (uint8_t));
result = u16_to_u8 (input, input_length, preallocated, &length);
if (!(result != NULL))
return 8;
if (!(preallocated == NULL || result == preallocated))
return 9;
if (!(length == expected_length))
return 10;
if (!(u8_cmp (result, expected, expected_length) == 0))
return 11;
free (preallocated);
}
return 0;
}
int
main ()
{
/* Empty string. */
ASSERT (check (NULL, 0, NULL, 0) == 0);
/* Simple string. */
{ /* "Grüß Gott. Здравствуйте! x=(-b±sqrt(b²-4ac))/(2a) 日本語,中文,한글" */
static const uint16_t input[] =
{ 'G', 'r', 0x00FC, 0x00DF, ' ', 'G', 'o', 't', 't', '.', ' ',
0x0417, 0x0434, 0x0440, 0x0430, 0x0432, 0x0441, 0x0442, 0x0432, 0x0443,
0x0439, 0x0442, 0x0435, '!', ' ',
'x', '=', '(', '-', 'b', 0x00B1, 's', 'q', 'r', 't', '(', 'b', 0x00B2,
'-', '4', 'a', 'c', ')', ')', '/', '(', '2', 'a', ')', ' ', ' ',
0x65E5, 0x672C, 0x8A9E, ',', 0x4E2D, 0x6587, ',', 0xD55C, 0xAE00, '\n'
};
static const uint8_t expected[] =
{ 'G', 'r', 0xC3, 0xBC, 0xC3, 0x9F, ' ', 'G', 'o', 't', 't', '.', ' ',
0xD0, 0x97, 0xD0, 0xB4, 0xD1, 0x80, 0xD0, 0xB0, 0xD0, 0xB2, 0xD1, 0x81,
0xD1, 0x82, 0xD0, 0xB2, 0xD1, 0x83, 0xD0, 0xB9, 0xD1, 0x82, 0xD0, 0xB5,
'!', ' ', 'x', '=', '(', '-', 'b', 0xC2, 0xB1, 's', 'q', 'r', 't', '(',
'b', 0xC2, 0xB2, '-', '4', 'a', 'c', ')', ')', '/', '(', '2', 'a', ')',
' ', ' ', 0xE6, 0x97, 0xA5, 0xE6, 0x9C, 0xAC, 0xE8, 0xAA, 0x9E, ',',
0xE4, 0xB8, 0xAD, 0xE6, 0x96, 0x87, ',',
0xED, 0x95, 0x9C, 0xEA, 0xB8, 0x80, '\n'
};
ASSERT (check (input, SIZEOF (input), expected, SIZEOF (expected)) == 0);
}
/* String with characters outside the BMP. */
{
static const uint16_t input[] =
{ '-', '(', 0xD835, 0xDD1E, 0x00D7, 0xD835, 0xDD1F, ')', '=',
0xD835, 0xDD1F, 0x00D7, 0xD835, 0xDD1E
};
static const uint8_t expected[] =
{ '-', '(', 0xF0, 0x9D, 0x94, 0x9E, 0xC3, 0x97, 0xF0, 0x9D, 0x94, 0x9F,
')', '=', 0xF0, 0x9D, 0x94, 0x9F, 0xC3, 0x97, 0xF0, 0x9D, 0x94, 0x9E
};
ASSERT (check (input, SIZEOF (input), expected, SIZEOF (expected)) == 0);
}
/* Invalid input. */
{
static const uint16_t input[] = { 'x', 0xDD1E, 0xD835, 'y' };
#if 0 /* Currently invalid input is rejected, not accommodated. */
static const uint8_t expected[] =
{ 'x', 0xEF, 0xBF, 0xBD, 0xEF, 0xBF, 0xBD, 'y' };
ASSERT (check (input, SIZEOF (input), expected, SIZEOF (expected)) == 0);
#else
size_t length;
uint8_t *result;
uint8_t preallocated[10];
/* Test return conventions with resultbuf == NULL. */
result = u16_to_u8 (input, SIZEOF (input), NULL, &length);
ASSERT (result == NULL);
ASSERT (errno == EILSEQ);
/* Test return conventions with resultbuf too small. */
length = 1;
result = u16_to_u8 (input, SIZEOF (input), preallocated, &length);
ASSERT (result == NULL);
ASSERT (errno == EILSEQ);
/* Test return conventions with resultbuf large enough. */
length = SIZEOF (preallocated);
result = u16_to_u8 (input, SIZEOF (input), preallocated, &length);
ASSERT (result == NULL);
ASSERT (errno == EILSEQ);
#endif
}
return test_exit_status;
}
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