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/* Test of determining the number of multibyte characters in a string.
Copyright (C) 2007-2026 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>, 2024. */
#include <config.h>
#include <string.h>
#include <locale.h>
#include "macros.h"
int
main ()
{
/* configure should already have checked that the locale is supported. */
if (setlocale (LC_ALL, "") == NULL)
return 1;
ASSERT (mbslen ("") == 0);
ASSERT (mbslen ("Hello") == 5);
/* The following tests shows how mbslen() is different from strlen(). */
ASSERT (mbslen ("\303\244\303\266") == 2); /* "äö" */
ASSERT (mbslen ("7\342\202\254") == 2); /* "7€" */
ASSERT (mbslen ("\360\237\220\203") == 1); /* "🐃" */
ASSERT (mbslen ("\303") == 1); /* invalid multibyte sequence */
ASSERT (mbslen ("\342\202") == 2); /* 2x invalid multibyte sequence */
ASSERT (mbslen ("\360\237\220") == 3); /* 3x invalid multibyte sequence */
return test_exit_status;
}
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