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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 <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "macros.h"
static void
test_u8_grapheme_breaks (const char *input, const char *expected)
{
const uint8_t *s = (const uint8_t *) input;
size_t n = strlen (expected);
char *breaks;
size_t i;
breaks = malloc (n);
if (!breaks)
abort ();
memset (breaks, 0xcc, n);
u8_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, " %02X", 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 ();
}
free (breaks);
}
int
main (void)
{
/* Standalone 1-unit graphemes. */
test_u8_grapheme_breaks ("a", "#");
test_u8_grapheme_breaks ("ab", "##");
test_u8_grapheme_breaks ("abc", "###");
/* Multi-unit, single code point graphemes. */
#define HIRAGANA_A "\343\201\202" /* あ: Hiragana letter 'a'. */
test_u8_grapheme_breaks (HIRAGANA_A, "#__");
test_u8_grapheme_breaks (HIRAGANA_A"x", "#__#");
test_u8_grapheme_breaks (HIRAGANA_A HIRAGANA_A, "#__#__");
/* Combining accents. */
#define GRAVE "\314\200" /* Combining grave accent. */
#define ACUTE "\314\201" /* Combining acute accent. */
test_u8_grapheme_breaks ("e"ACUTE, "#__");
test_u8_grapheme_breaks ("e"ACUTE GRAVE, "#____");
test_u8_grapheme_breaks ("e"ACUTE"x", "#__#");
test_u8_grapheme_breaks ("e"ACUTE "e"ACUTE, "#__#__");
/* CR LF handling. */
test_u8_grapheme_breaks ("a\nb\rc\r\nd", "######_#");
/* Emoji modifier / ZWJ sequence. */
test_u8_grapheme_breaks ("\342\230\205\314\205\315\207\342\200\215\342\230\200",
"#____________");
/* Regional indicators. */
test_u8_grapheme_breaks (".\360\237\207\251\360\237\207\252\360\237\207\253\360\237\207\267.",
"##_______#_______#");
return test_exit_status;
}
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