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# mbsrtowcs.m4 serial 17
dnl Copyright (C) 2008-2024 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_MBSRTOWCS],
[
AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
AC_REQUIRE([AC_TYPE_MBSTATE_T])
gl_MBSTATE_T_BROKEN
AC_CHECK_FUNCS_ONCE([mbsrtowcs])
if test $ac_cv_func_mbsrtowcs = no; then
HAVE_MBSRTOWCS=0
AC_CHECK_DECLS([mbsrtowcs],,, [[
#include <wchar.h>
]])
if test $ac_cv_have_decl_mbsrtowcs = yes; then
dnl On Minix 3.1.8, the system's <wchar.h> declares mbsrtowcs() although
dnl it does not have the function. Avoid a collision with gnulib's
dnl replacement.
REPLACE_MBSRTOWCS=1
fi
else
if test $REPLACE_MBSTATE_T = 1; then
REPLACE_MBSRTOWCS=1
else
gl_MBSRTOWCS_WORKS
case "$gl_cv_func_mbsrtowcs_works" in
*yes) ;;
*) REPLACE_MBSRTOWCS=1 ;;
esac
if test $REPLACE_MBSRTOWCS = 0; then
gl_MBRTOWC_C_LOCALE
case "$gl_cv_func_mbrtowc_C_locale_sans_EILSEQ" in
*yes) ;;
*) REPLACE_MBSRTOWCS=1 ;;
esac
fi
fi
fi
])
dnl Test whether mbsrtowcs works.
dnl Result is gl_cv_func_mbsrtowcs_works.
AC_DEFUN([gl_MBSRTOWCS_WORKS],
[
AC_REQUIRE([AC_PROG_CC])
AC_REQUIRE([gt_LOCALE_FR])
AC_REQUIRE([gt_LOCALE_FR_UTF8])
AC_REQUIRE([gt_LOCALE_JA])
AC_REQUIRE([gt_LOCALE_ZH_CN])
AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
AC_CACHE_CHECK([whether mbsrtowcs works],
[gl_cv_func_mbsrtowcs_works],
[
dnl Initial guess, used when cross-compiling or when no suitable locale
dnl is present.
changequote(,)dnl
case "$host_os" in
# Guess no on HP-UX, Solaris, mingw.
hpux* | solaris* | mingw* | windows*)
gl_cv_func_mbsrtowcs_works="guessing no" ;;
# Guess yes otherwise.
*)
gl_cv_func_mbsrtowcs_works="guessing yes" ;;
esac
changequote([,])dnl
if test $LOCALE_FR != none || test $LOCALE_FR_UTF8 != none || test $LOCALE_JA != none || test $LOCALE_ZH_CN != none; then
AC_RUN_IFELSE(
[AC_LANG_SOURCE([[
#include <locale.h>
#include <string.h>
#include <wchar.h>
int main ()
{
int result = 0;
/* Test whether the function supports a NULL destination argument.
This fails on native Windows. */
if (strcmp ("$LOCALE_FR", "none") != 0
&& setlocale (LC_ALL, "$LOCALE_FR") != NULL)
{
const char input[] = "\337er";
const char *src = input;
mbstate_t state;
memset (&state, '\0', sizeof (mbstate_t));
if (mbsrtowcs (NULL, &src, 1, &state) != 3
|| src != input)
result |= 1;
}
/* Test whether the function works when started with a conversion state
in non-initial state. This fails on HP-UX 11.11 and Solaris 10. */
if (strcmp ("$LOCALE_FR_UTF8", "none") != 0
&& setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
{
const char input[] = "B\303\274\303\237er";
mbstate_t state;
memset (&state, '\0', sizeof (mbstate_t));
if (mbrtowc (NULL, input + 1, 1, &state) == (size_t)(-2))
if (!mbsinit (&state))
{
const char *src = input + 2;
if (mbsrtowcs (NULL, &src, 10, &state) != 4)
result |= 2;
}
}
if (strcmp ("$LOCALE_JA", "none") != 0
&& setlocale (LC_ALL, "$LOCALE_JA") != NULL)
{
const char input[] = "<\306\374\313\334\270\354>";
mbstate_t state;
memset (&state, '\0', sizeof (mbstate_t));
if (mbrtowc (NULL, input + 3, 1, &state) == (size_t)(-2))
if (!mbsinit (&state))
{
const char *src = input + 4;
if (mbsrtowcs (NULL, &src, 10, &state) != 3)
result |= 4;
}
}
if (strcmp ("$LOCALE_ZH_CN", "none") != 0
&& setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL)
{
const char input[] = "B\250\271\201\060\211\070er";
mbstate_t state;
memset (&state, '\0', sizeof (mbstate_t));
if (mbrtowc (NULL, input + 1, 1, &state) == (size_t)(-2))
if (!mbsinit (&state))
{
const char *src = input + 2;
if (mbsrtowcs (NULL, &src, 10, &state) != 4)
result |= 8;
}
}
return result;
}]])],
[gl_cv_func_mbsrtowcs_works=yes],
[gl_cv_func_mbsrtowcs_works=no],
[:])
fi
])
])
# Prerequisites of lib/mbsrtowcs.c.
AC_DEFUN([gl_PREREQ_MBSRTOWCS], [
:
])
|
