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/* Grapheme cluster breaks test.
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 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
Lesser 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/>. */
/* Written by Ben Pfaff <blp@cs.stanford.edu>, 2010. */
#include <config.h>
/* Specification. */
#include <unigbrk.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "macros.h"
static void
test_u16_grapheme_breaks (const char *expected, ...)
{
size_t n = strlen (expected);
uint16_t s[16];
va_list args;
char breaks[16];
size_t i;
ASSERT (n <= 16);
memset (breaks, 0xcc, n);
va_start (args, expected);
for (i = 0; i < n; i++)
{
int unit = va_arg (args, int);
ASSERT (unit >= 0);
s[i] = unit;
}
ASSERT (va_arg (args, int) == -1);
va_end (args);
u16_grapheme_breaks (s, n, breaks);
for (i = 0; i < n; i++)
if (breaks[i] != (expected[i] == '#'))
{
size_t j;
fprintf (stderr, "wrong grapheme breaks:\n");
fprintf (stderr, " input:");
for (j = 0; j < n; j++)
fprintf (stderr, " %04X", s[j]);
putc ('\n', stderr);
fprintf (stderr, "expected:");
for (j = 0; j < n; j++)
fprintf (stderr, " %d", expected[j] == '#');
putc ('\n', stderr);
fprintf (stderr, " actual:");
for (j = 0; j < n; j++)
fprintf (stderr, " %d", breaks[j]);
putc ('\n', stderr);
fflush (stderr);
abort ();
}
}
int
main (void)
{
/* Standalone 1-unit graphemes. */
test_u16_grapheme_breaks ("#", 'a', -1);
test_u16_grapheme_breaks ("##", 'a', 'b', -1);
test_u16_grapheme_breaks ("###", 'a', 'b', 'c', -1);
#define HIRAGANA_A 0x3042 /* あ: Hiragana letter 'a'. */
test_u16_grapheme_breaks ("#", HIRAGANA_A, -1);
test_u16_grapheme_breaks ("##", HIRAGANA_A, 'x', -1);
test_u16_grapheme_breaks ("##", HIRAGANA_A, HIRAGANA_A, -1);
/* Combining accents. */
#define GRAVE 0x0300 /* Combining grave accent. */
#define ACUTE 0x0301 /* Combining acute accent. */
test_u16_grapheme_breaks ("#_", 'e', ACUTE, -1);
test_u16_grapheme_breaks ("#__", 'e', ACUTE, GRAVE, -1);
test_u16_grapheme_breaks ("#_#", 'e', ACUTE, 'x', -1);
test_u16_grapheme_breaks ("#_#_", 'e', ACUTE, 'e', GRAVE, -1);
/* CR LF handling. */
test_u16_grapheme_breaks ("######_#",
'a', '\n', 'b', '\r', 'c', '\r', '\n', 'd',
-1);
/* Emoji modifier / ZWJ sequence. */
test_u16_grapheme_breaks ("#____",
0x2605, 0x0305, 0x0347, 0x200D, 0x2600,
-1);
/* Regional indicators. */
test_u16_grapheme_breaks ("##___#___#",
'.', 0xD83C, 0xDDE9, 0xD83C, 0xDDEA, 0xD83C, 0xDDEB, 0xD83C, 0xDDF7, '.',
-1);
return test_exit_status;
}
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