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# wcsnrtombs.m4 serial 6
dnl Copyright (C) 2008-2020 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
AC_DEFUN([gl_FUNC_WCSNRTOMBS],
[
AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
AC_REQUIRE([AC_TYPE_MBSTATE_T])
gl_MBSTATE_T_BROKEN
AC_CHECK_FUNCS_ONCE([wcsnrtombs])
if test $ac_cv_func_wcsnrtombs = no; then
HAVE_WCSNRTOMBS=0
else
if test $REPLACE_MBSTATE_T = 1; then
REPLACE_WCSNRTOMBS=1
else
gl_WCSNRTOMBS_WORKS_IN_TRADITIONAL_LOCALE
case "$gl_cv_func_wcsnrtombs_works_in_traditional_locale" in
*yes) ;;
*) REPLACE_WCSNRTOMBS=1 ;;
esac
fi
fi
])
# Prerequisites of lib/wcsnrtombs.c.
AC_DEFUN([gl_PREREQ_WCSNRTOMBS], [
:
])
dnl Test whether wcsnrtombs works in an ISO-8859-1 locale.
dnl Result is gl_cv_func_wcsnrtombs_works_in_traditional_locale.
AC_DEFUN([gl_WCSNRTOMBS_WORKS_IN_TRADITIONAL_LOCALE],
[
AC_REQUIRE([AC_PROG_CC])
AC_REQUIRE([gt_LOCALE_FR])
AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
AC_CACHE_CHECK([whether wcsnrtombs works in a traditional locale],
[gl_cv_func_wcsnrtombs_works_in_traditional_locale],
[
dnl Initial guess, used when cross-compiling or when no suitable locale
dnl is present.
changequote(,)dnl
case "$host_os" in
# Guess no on Solaris.
solaris*) gl_cv_func_wcsnrtombs_works_in_traditional_locale="guessing no" ;;
# Guess yes otherwise.
*) gl_cv_func_wcsnrtombs_works_in_traditional_locale="guessing yes" ;;
esac
changequote([,])dnl
if test $LOCALE_FR != none; then
AC_RUN_IFELSE(
[AC_LANG_SOURCE([[
#include <locale.h>
#include <stdlib.h>
#include <string.h>
/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
<wchar.h>.
BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
included before <wchar.h>. */
#include <stddef.h>
#include <stdio.h>
#include <time.h>
#include <wchar.h>
int main ()
{
/* This fails on Solaris 11.4. */
if (setlocale (LC_ALL, "$LOCALE_FR") != NULL)
{
/* Locale encoding is ISO-8859-1 or ISO-8859-15. */
const char original[] = "B\374\337er"; /* "Büßer" */
wchar_t input[10];
size_t ret;
const wchar_t *src;
#define BUFSIZE 20
char buf[BUFSIZE];
memset (buf, '_', BUFSIZE);
ret = mbstowcs (input, original, 10);
if (!(ret == 5))
return 1;
src = input;
ret = wcsnrtombs (buf, &src, 6, 2, NULL);
if (!(ret == 2))
return 2;
if (!(src == input + 2))
return 3;
if (!(memcmp (buf, original, ret) == 0))
return 4;
}
return 0;
}]])],
[gl_cv_func_wcsnrtombs_works_in_traditional_locale=yes],
[gl_cv_func_wcsnrtombs_works_in_traditional_locale=no],
[:])
fi
])
])
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