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/* Test of searching a string for a character outside a given set of characters.
Copyright (C) 2007-2024 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>, 2007. */
#include <config.h>
#include <string.h>
#include <locale.h>
#include "macros.h"
/* The mcel-based implementation of mbsnlen behaves differently than the
original one. Namely, for invalid/incomplete byte sequences:
Where we ideally should have multi-byte-per-encoding-error (MEE) behaviour
everywhere, mcel implements single-byte-per-encoding-error (SEE) behaviour.
See <https://lists.gnu.org/archive/html/bug-gnulib/2023-07/msg00131.html>,
<https://lists.gnu.org/archive/html/bug-gnulib/2023-07/msg00145.html>.
Therefore, here we have different expected results, depending on the
implementation. */
#if GNULIB_MCEL_PREFER
# define OR(a,b) b
#else
# define OR(a,b) a
#endif
int
main ()
{
/* configure should already have checked that the locale is supported. */
if (setlocale (LC_ALL, "") == NULL)
return 1;
ASSERT (mbsnlen ("", 0) == 0);
ASSERT (mbsnlen ("", 1) == 1);
ASSERT (mbsnlen ("\0", 2) == 2);
ASSERT (mbsnlen ("H", 0) == 0);
ASSERT (mbsnlen ("H", 1) == 1);
ASSERT (mbsnlen ("H", 2) == 2);
ASSERT (mbsnlen ("Hello", 0) == 0);
ASSERT (mbsnlen ("Hello", 1) == 1);
ASSERT (mbsnlen ("Hello", 2) == 2);
ASSERT (mbsnlen ("Hello", 5) == 5);
ASSERT (mbsnlen ("Hello", 6) == 6);
/* The following tests shows how mbsnlen() is different from strnlen(). */
/* "äö" */
ASSERT (mbsnlen ("\303\244\303\266", 0) == 0);
ASSERT (mbsnlen ("\303\244\303\266", 1) == 1); /* invalid multibyte sequence */
ASSERT (mbsnlen ("\303\244\303\266", 2) == 1);
ASSERT (mbsnlen ("\303\244\303\266", 3) == 2); /* invalid multibyte sequence */
ASSERT (mbsnlen ("\303\244\303\266", 4) == 2);
ASSERT (mbsnlen ("\303\244\303\266", 5) == 3);
/* "7€" */
ASSERT (mbsnlen ("7\342\202\254", 0) == 0);
ASSERT (mbsnlen ("7\342\202\254", 1) == 1);
ASSERT (mbsnlen ("7\342\202\254", 2) == 2); /* invalid multibyte sequence */
ASSERT (mbsnlen ("7\342\202\254", 3) == OR(2,3)); /* invalid multibyte sequence */
ASSERT (mbsnlen ("7\342\202\254", 4) == 2);
ASSERT (mbsnlen ("7\342\202\254", 5) == 3);
/* "🐃" */
ASSERT (mbsnlen ("\360\237\220\203", 0) == 0);
ASSERT (mbsnlen ("\360\237\220\203", 1) == 1); /* invalid multibyte sequence */
ASSERT (mbsnlen ("\360\237\220\203", 2) == OR(1,2)); /* invalid multibyte sequence */
ASSERT (mbsnlen ("\360\237\220\203", 3) == OR(1,3)); /* invalid multibyte sequence */
ASSERT (mbsnlen ("\360\237\220\203", 4) == 1);
ASSERT (mbsnlen ("\360\237\220\203", 5) == 2);
ASSERT (mbsnlen ("\303", 1) == 1); /* invalid multibyte sequence */
ASSERT (mbsnlen ("\342\202", 2) == OR(1,2)); /* invalid multibyte sequence */
ASSERT (mbsnlen ("\360\237\220", 3) == OR(1,3)); /* invalid multibyte sequence */
return test_exit_status;
}
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