790 lines
23 KiB
Text
790 lines
23 KiB
Text
# mbrtowc.m4 serial 38 -*- coding: utf-8 -*-
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dnl Copyright (C) 2001-2002, 2004-2005, 2008-2023 Free Software Foundation,
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dnl Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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AC_DEFUN([gl_FUNC_MBRTOWC],
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[
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AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
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AC_REQUIRE([gl_PTHREADLIB])
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AC_CHECK_HEADERS_ONCE([threads.h])
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AC_REQUIRE([AC_TYPE_MBSTATE_T])
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gl_MBSTATE_T_BROKEN
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AC_CHECK_FUNCS_ONCE([mbrtowc])
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if test $ac_cv_func_mbrtowc = no; then
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HAVE_MBRTOWC=0
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AC_CHECK_DECLS([mbrtowc],,, [[
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#include <wchar.h>
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]])
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if test $ac_cv_have_decl_mbrtowc = yes; then
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dnl On Minix 3.1.8, the system's <wchar.h> declares mbrtowc() although
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dnl it does not have the function. Avoid a collision with gnulib's
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dnl replacement.
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REPLACE_MBRTOWC=1
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fi
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else
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if test $REPLACE_MBSTATE_T = 1; then
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REPLACE_MBRTOWC=1
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else
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gl_MBRTOWC_NULL_ARG1
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gl_MBRTOWC_NULL_ARG2
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gl_MBRTOWC_RETVAL
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gl_MBRTOWC_NUL_RETVAL
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gl_MBRTOWC_STORES_INCOMPLETE
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gl_MBRTOWC_EMPTY_INPUT
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gl_MBRTOWC_C_LOCALE
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case "$gl_cv_func_mbrtowc_null_arg1" in
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*yes) ;;
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*) AC_DEFINE([MBRTOWC_NULL_ARG1_BUG], [1],
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[Define if the mbrtowc function has the NULL pwc argument bug.])
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REPLACE_MBRTOWC=1
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;;
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esac
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case "$gl_cv_func_mbrtowc_null_arg2" in
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*yes) ;;
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*) AC_DEFINE([MBRTOWC_NULL_ARG2_BUG], [1],
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[Define if the mbrtowc function has the NULL string argument bug.])
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REPLACE_MBRTOWC=1
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;;
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esac
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case "$gl_cv_func_mbrtowc_retval" in
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*yes) ;;
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*) AC_DEFINE([MBRTOWC_RETVAL_BUG], [1],
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[Define if the mbrtowc function returns a wrong return value.])
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REPLACE_MBRTOWC=1
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;;
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esac
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case "$gl_cv_func_mbrtowc_nul_retval" in
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*yes) ;;
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*) AC_DEFINE([MBRTOWC_NUL_RETVAL_BUG], [1],
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[Define if the mbrtowc function does not return 0 for a NUL character.])
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REPLACE_MBRTOWC=1
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;;
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esac
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case "$gl_cv_func_mbrtowc_stores_incomplete" in
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*no) ;;
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*) AC_DEFINE([MBRTOWC_STORES_INCOMPLETE_BUG], [1],
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[Define if the mbrtowc function stores a wide character when reporting incomplete input.])
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REPLACE_MBRTOWC=1
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;;
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esac
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case "$gl_cv_func_mbrtowc_empty_input" in
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*yes) ;;
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*) AC_DEFINE([MBRTOWC_EMPTY_INPUT_BUG], [1],
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[Define if the mbrtowc function does not return (size_t) -2
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for empty input.])
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REPLACE_MBRTOWC=1
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;;
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esac
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case "$gl_cv_func_mbrtowc_C_locale_sans_EILSEQ" in
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*yes) ;;
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*) AC_DEFINE([MBRTOWC_IN_C_LOCALE_MAYBE_EILSEQ], [1],
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[Define if the mbrtowc function may signal encoding errors in the C locale.])
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REPLACE_MBRTOWC=1
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;;
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esac
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fi
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fi
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if test $REPLACE_MBSTATE_T = 1; then
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case "$host_os" in
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mingw*) LIB_MBRTOWC= ;;
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*)
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gl_WEAK_SYMBOLS
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case "$gl_cv_have_weak" in
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*yes) LIB_MBRTOWC= ;;
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*) LIB_MBRTOWC="$LIBPTHREAD" ;;
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esac
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;;
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esac
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else
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LIB_MBRTOWC=
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fi
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dnl LIB_MBRTOWC is expected to be '-pthread' or '-lpthread' on AIX
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dnl with gcc or xlc, and empty otherwise.
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AC_SUBST([LIB_MBRTOWC])
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])
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dnl Test whether mbsinit() and mbrtowc() need to be overridden in a way that
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dnl redefines the semantics of the given mbstate_t type.
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dnl Result is REPLACE_MBSTATE_T.
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dnl When this is set to 1, we replace both mbsinit() and mbrtowc(), in order to
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dnl avoid inconsistencies.
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AC_DEFUN([gl_MBSTATE_T_BROKEN],
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[
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AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
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AC_REQUIRE([AC_CANONICAL_HOST])
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AC_REQUIRE([AC_TYPE_MBSTATE_T])
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AC_CHECK_FUNCS_ONCE([mbsinit])
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AC_CHECK_FUNCS_ONCE([mbrtowc])
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dnl On native Windows, we know exactly how mbsinit() behaves and don't need
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dnl to override it, even if - like on MSVC - mbsinit() is only defined as
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dnl an inline function, not as a global function.
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if case "$host_os" in
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mingw*) true ;;
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*) test $ac_cv_func_mbsinit = yes ;;
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esac \
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&& test $ac_cv_func_mbrtowc = yes; then
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gl_MBRTOWC_INCOMPLETE_STATE
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gl_MBRTOWC_SANITYCHECK
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REPLACE_MBSTATE_T=0
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case "$gl_cv_func_mbrtowc_incomplete_state" in
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*yes) ;;
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*) REPLACE_MBSTATE_T=1 ;;
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esac
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case "$gl_cv_func_mbrtowc_sanitycheck" in
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*yes) ;;
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*) REPLACE_MBSTATE_T=1 ;;
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esac
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else
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REPLACE_MBSTATE_T=1
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fi
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])
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dnl Test whether mbrtowc puts the state into non-initial state when parsing an
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dnl incomplete multibyte character.
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dnl Result is gl_cv_func_mbrtowc_incomplete_state.
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AC_DEFUN([gl_MBRTOWC_INCOMPLETE_STATE],
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[
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AC_REQUIRE([AC_PROG_CC])
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AC_REQUIRE([gt_LOCALE_JA])
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AC_REQUIRE([gt_LOCALE_FR_UTF8])
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AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
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AC_CACHE_CHECK([whether mbrtowc handles incomplete characters],
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[gl_cv_func_mbrtowc_incomplete_state],
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[
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dnl Initial guess, used when cross-compiling or when no suitable locale
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dnl is present.
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changequote(,)dnl
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case "$host_os" in
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# Guess no on AIX and OSF/1.
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aix* | osf*) gl_cv_func_mbrtowc_incomplete_state="guessing no" ;;
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# Guess yes otherwise.
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*) gl_cv_func_mbrtowc_incomplete_state="guessing yes" ;;
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esac
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changequote([,])dnl
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if test $LOCALE_JA != none; then
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AC_RUN_IFELSE(
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[AC_LANG_SOURCE([[
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#include <locale.h>
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#include <string.h>
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#include <wchar.h>
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int main ()
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{
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if (setlocale (LC_ALL, "$LOCALE_JA") != NULL)
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{
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const char input[] = "B\217\253\344\217\251\316er"; /* "Büßer" */
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mbstate_t state;
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wchar_t wc;
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memset (&state, '\0', sizeof (mbstate_t));
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if (mbrtowc (&wc, input + 1, 1, &state) == (size_t)(-2))
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if (mbsinit (&state))
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return 2;
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}
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return 0;
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}]])],
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[gl_cv_func_mbrtowc_incomplete_state=yes],
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[gl_cv_func_mbrtowc_incomplete_state=no],
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[:])
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else
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if test $LOCALE_FR_UTF8 != none; then
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AC_RUN_IFELSE(
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[AC_LANG_SOURCE([[
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#include <locale.h>
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#include <string.h>
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#include <wchar.h>
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int main ()
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{
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if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
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{
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const char input[] = "B\303\274\303\237er"; /* "Büßer" */
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mbstate_t state;
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wchar_t wc;
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memset (&state, '\0', sizeof (mbstate_t));
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if (mbrtowc (&wc, input + 1, 1, &state) == (size_t)(-2))
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if (mbsinit (&state))
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return 2;
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}
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return 0;
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}]])],
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[gl_cv_func_mbrtowc_incomplete_state=yes],
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[gl_cv_func_mbrtowc_incomplete_state=no],
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[:])
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fi
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fi
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])
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])
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dnl Test whether mbrtowc works not worse than mbtowc.
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dnl Result is gl_cv_func_mbrtowc_sanitycheck.
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AC_DEFUN([gl_MBRTOWC_SANITYCHECK],
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[
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AC_REQUIRE([AC_PROG_CC])
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AC_REQUIRE([gt_LOCALE_ZH_CN])
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AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
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AC_CACHE_CHECK([whether mbrtowc works as well as mbtowc],
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[gl_cv_func_mbrtowc_sanitycheck],
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[
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dnl Initial guess, used when cross-compiling or when no suitable locale
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dnl is present.
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changequote(,)dnl
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case "$host_os" in
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# Guess no on Solaris 8.
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solaris2.8) gl_cv_func_mbrtowc_sanitycheck="guessing no" ;;
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# Guess yes otherwise.
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*) gl_cv_func_mbrtowc_sanitycheck="guessing yes" ;;
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esac
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changequote([,])dnl
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if test $LOCALE_ZH_CN != none; then
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AC_RUN_IFELSE(
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[AC_LANG_SOURCE([[
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#include <locale.h>
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#include <stdlib.h>
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#include <string.h>
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#include <wchar.h>
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int main ()
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{
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/* This fails on Solaris 8:
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mbrtowc returns 2, and sets wc to 0x00F0.
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mbtowc returns 4 (correct) and sets wc to 0x5EDC. */
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if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL)
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{
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char input[] = "B\250\271\201\060\211\070er"; /* "Büßer" */
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mbstate_t state;
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wchar_t wc;
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memset (&state, '\0', sizeof (mbstate_t));
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if (mbrtowc (&wc, input + 3, 6, &state) != 4
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&& mbtowc (&wc, input + 3, 6) == 4)
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return 2;
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}
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return 0;
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}]])],
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[gl_cv_func_mbrtowc_sanitycheck=yes],
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[gl_cv_func_mbrtowc_sanitycheck=no],
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[:])
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fi
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])
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])
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dnl Test whether mbrtowc supports a NULL pwc argument correctly.
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dnl Result is gl_cv_func_mbrtowc_null_arg1.
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AC_DEFUN([gl_MBRTOWC_NULL_ARG1],
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[
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AC_REQUIRE([AC_PROG_CC])
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AC_REQUIRE([gt_LOCALE_FR_UTF8])
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AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
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AC_CACHE_CHECK([whether mbrtowc handles a NULL pwc argument],
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[gl_cv_func_mbrtowc_null_arg1],
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[
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dnl Initial guess, used when cross-compiling or when no suitable locale
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dnl is present.
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changequote(,)dnl
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case "$host_os" in
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# Guess no on Solaris.
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solaris*) gl_cv_func_mbrtowc_null_arg1="guessing no" ;;
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# Guess yes otherwise.
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*) gl_cv_func_mbrtowc_null_arg1="guessing yes" ;;
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esac
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changequote([,])dnl
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if test $LOCALE_FR_UTF8 != none; then
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AC_RUN_IFELSE(
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[AC_LANG_SOURCE([[
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#include <locale.h>
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#include <stdlib.h>
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#include <string.h>
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#include <wchar.h>
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int main ()
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{
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int result = 0;
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if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
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{
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char input[] = "\303\237er";
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mbstate_t state;
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wchar_t wc;
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size_t ret;
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memset (&state, '\0', sizeof (mbstate_t));
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wc = (wchar_t) 0xBADFACE;
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ret = mbrtowc (&wc, input, 5, &state);
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if (ret != 2)
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result |= 1;
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if (!mbsinit (&state))
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result |= 2;
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memset (&state, '\0', sizeof (mbstate_t));
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ret = mbrtowc (NULL, input, 5, &state);
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if (ret != 2) /* Solaris 7 fails here: ret is -1. */
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result |= 4;
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if (!mbsinit (&state))
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result |= 8;
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}
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return result;
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}]])],
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[gl_cv_func_mbrtowc_null_arg1=yes],
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[gl_cv_func_mbrtowc_null_arg1=no],
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[:])
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fi
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])
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])
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dnl Test whether mbrtowc supports a NULL string argument correctly.
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dnl Result is gl_cv_func_mbrtowc_null_arg2.
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AC_DEFUN([gl_MBRTOWC_NULL_ARG2],
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[
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AC_REQUIRE([AC_PROG_CC])
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AC_REQUIRE([gt_LOCALE_FR_UTF8])
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AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
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AC_CACHE_CHECK([whether mbrtowc handles a NULL string argument],
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[gl_cv_func_mbrtowc_null_arg2],
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[
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dnl Initial guess, used when cross-compiling or when no suitable locale
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dnl is present.
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changequote(,)dnl
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case "$host_os" in
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# Guess no on OSF/1.
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osf*) gl_cv_func_mbrtowc_null_arg2="guessing no" ;;
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# Guess yes otherwise.
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*) gl_cv_func_mbrtowc_null_arg2="guessing yes" ;;
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esac
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changequote([,])dnl
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if test $LOCALE_FR_UTF8 != none; then
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AC_RUN_IFELSE(
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[AC_LANG_SOURCE([[
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#include <locale.h>
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#include <string.h>
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#include <wchar.h>
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int main ()
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{
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if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
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{
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mbstate_t state;
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wchar_t wc;
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int ret;
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memset (&state, '\0', sizeof (mbstate_t));
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wc = (wchar_t) 0xBADFACE;
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mbrtowc (&wc, NULL, 5, &state);
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/* Check that wc was not modified. */
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if (wc != (wchar_t) 0xBADFACE)
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return 2;
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}
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return 0;
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}]])],
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[gl_cv_func_mbrtowc_null_arg2=yes],
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[gl_cv_func_mbrtowc_null_arg2=no],
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[:])
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fi
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])
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])
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dnl Test whether mbrtowc, when parsing the end of a multibyte character,
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dnl correctly returns the number of bytes that were needed to complete the
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dnl character (not the total number of bytes of the multibyte character).
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dnl Result is gl_cv_func_mbrtowc_retval.
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AC_DEFUN([gl_MBRTOWC_RETVAL],
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[
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AC_REQUIRE([AC_PROG_CC])
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AC_REQUIRE([gt_LOCALE_FR_UTF8])
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AC_REQUIRE([gt_LOCALE_JA])
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AC_REQUIRE([AC_CANONICAL_HOST])
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AC_CACHE_CHECK([whether mbrtowc has a correct return value],
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[gl_cv_func_mbrtowc_retval],
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[
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dnl Initial guess, used when cross-compiling or when no suitable locale
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dnl is present.
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changequote(,)dnl
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case "$host_os" in
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# Guess no on HP-UX, Solaris, native Windows.
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hpux* | solaris* | mingw*) gl_cv_func_mbrtowc_retval="guessing no" ;;
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# Guess yes otherwise.
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*) gl_cv_func_mbrtowc_retval="guessing yes" ;;
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esac
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changequote([,])dnl
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if test $LOCALE_FR_UTF8 != none || test $LOCALE_JA != none \
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|| { case "$host_os" in mingw*) true;; *) false;; esac; }; then
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AC_RUN_IFELSE(
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[AC_LANG_SOURCE([[
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#include <locale.h>
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#include <string.h>
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#include <wchar.h>
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int main ()
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{
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int result = 0;
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int found_some_locale = 0;
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/* This fails on Solaris. */
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if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
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{
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char input[] = "B\303\274\303\237er"; /* "Büßer" */
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mbstate_t state;
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wchar_t wc;
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memset (&state, '\0', sizeof (mbstate_t));
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if (mbrtowc (&wc, input + 1, 1, &state) == (size_t)(-2))
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{
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input[1] = '\0';
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if (mbrtowc (&wc, input + 2, 5, &state) != 1)
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result |= 1;
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}
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found_some_locale = 1;
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}
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/* This fails on HP-UX 11.11. */
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if (setlocale (LC_ALL, "$LOCALE_JA") != NULL)
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{
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char input[] = "B\217\253\344\217\251\316er"; /* "Büßer" */
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mbstate_t state;
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wchar_t wc;
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memset (&state, '\0', sizeof (mbstate_t));
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if (mbrtowc (&wc, input + 1, 1, &state) == (size_t)(-2))
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{
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input[1] = '\0';
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if (mbrtowc (&wc, input + 2, 5, &state) != 2)
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result |= 2;
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}
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found_some_locale = 1;
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}
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/* This fails on native Windows. */
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if (setlocale (LC_ALL, "Japanese_Japan.932") != NULL)
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{
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char input[] = "<\223\372\226\173\214\352>"; /* "<日本語>" */
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mbstate_t state;
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wchar_t wc;
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|
|
memset (&state, '\0', sizeof (mbstate_t));
|
|
if (mbrtowc (&wc, input + 3, 1, &state) == (size_t)(-2))
|
|
{
|
|
input[3] = '\0';
|
|
if (mbrtowc (&wc, input + 4, 4, &state) != 1)
|
|
result |= 4;
|
|
}
|
|
found_some_locale = 1;
|
|
}
|
|
if (setlocale (LC_ALL, "Chinese_Taiwan.950") != NULL)
|
|
{
|
|
char input[] = "<\244\351\245\273\273\171>"; /* "<日本語>" */
|
|
mbstate_t state;
|
|
wchar_t wc;
|
|
|
|
memset (&state, '\0', sizeof (mbstate_t));
|
|
if (mbrtowc (&wc, input + 3, 1, &state) == (size_t)(-2))
|
|
{
|
|
input[3] = '\0';
|
|
if (mbrtowc (&wc, input + 4, 4, &state) != 1)
|
|
result |= 8;
|
|
}
|
|
found_some_locale = 1;
|
|
}
|
|
if (setlocale (LC_ALL, "Chinese_China.936") != NULL)
|
|
{
|
|
char input[] = "<\310\325\261\276\325\132>"; /* "<日本語>" */
|
|
mbstate_t state;
|
|
wchar_t wc;
|
|
|
|
memset (&state, '\0', sizeof (mbstate_t));
|
|
if (mbrtowc (&wc, input + 3, 1, &state) == (size_t)(-2))
|
|
{
|
|
input[3] = '\0';
|
|
if (mbrtowc (&wc, input + 4, 4, &state) != 1)
|
|
result |= 16;
|
|
}
|
|
found_some_locale = 1;
|
|
}
|
|
return (found_some_locale ? result : 77);
|
|
}]])],
|
|
[gl_cv_func_mbrtowc_retval=yes],
|
|
[if test $? != 77; then
|
|
gl_cv_func_mbrtowc_retval=no
|
|
fi
|
|
],
|
|
[:])
|
|
fi
|
|
])
|
|
])
|
|
|
|
dnl Test whether mbrtowc, when parsing a NUL character, correctly returns 0.
|
|
dnl Result is gl_cv_func_mbrtowc_nul_retval.
|
|
|
|
AC_DEFUN([gl_MBRTOWC_NUL_RETVAL],
|
|
[
|
|
AC_REQUIRE([AC_PROG_CC])
|
|
AC_REQUIRE([gt_LOCALE_ZH_CN])
|
|
AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
|
|
AC_CACHE_CHECK([whether mbrtowc returns 0 when parsing a NUL character],
|
|
[gl_cv_func_mbrtowc_nul_retval],
|
|
[
|
|
dnl Initial guess, used when cross-compiling or when no suitable locale
|
|
dnl is present.
|
|
changequote(,)dnl
|
|
case "$host_os" in
|
|
# Guess no on Solaris 8 and 9.
|
|
solaris2.[89]) gl_cv_func_mbrtowc_nul_retval="guessing no" ;;
|
|
# Guess yes otherwise.
|
|
*) gl_cv_func_mbrtowc_nul_retval="guessing yes" ;;
|
|
esac
|
|
changequote([,])dnl
|
|
if test $LOCALE_ZH_CN != none; then
|
|
AC_RUN_IFELSE(
|
|
[AC_LANG_SOURCE([[
|
|
#include <locale.h>
|
|
#include <string.h>
|
|
#include <wchar.h>
|
|
int main ()
|
|
{
|
|
/* This fails on Solaris 8 and 9. */
|
|
if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL)
|
|
{
|
|
mbstate_t state;
|
|
wchar_t wc;
|
|
|
|
memset (&state, '\0', sizeof (mbstate_t));
|
|
if (mbrtowc (&wc, "", 1, &state) != 0)
|
|
return 2;
|
|
}
|
|
return 0;
|
|
}]])],
|
|
[gl_cv_func_mbrtowc_nul_retval=yes],
|
|
[gl_cv_func_mbrtowc_nul_retval=no],
|
|
[:])
|
|
fi
|
|
])
|
|
])
|
|
|
|
dnl Test whether mbrtowc stores a wide character when reporting incomplete
|
|
dnl input.
|
|
|
|
AC_DEFUN([gl_MBRTOWC_STORES_INCOMPLETE],
|
|
[
|
|
AC_REQUIRE([AC_PROG_CC])
|
|
AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
|
|
AC_CACHE_CHECK([whether mbrtowc stores incomplete characters],
|
|
[gl_cv_func_mbrtowc_stores_incomplete],
|
|
[
|
|
dnl Initial guess, used when cross-compiling or when no suitable locale
|
|
dnl is present.
|
|
changequote(,)dnl
|
|
case "$host_os" in
|
|
# Guess yes on native Windows.
|
|
mingw*) gl_cv_func_mbrtowc_stores_incomplete="guessing yes" ;;
|
|
*) gl_cv_func_mbrtowc_stores_incomplete="guessing no" ;;
|
|
esac
|
|
changequote([,])dnl
|
|
case "$host_os" in
|
|
mingw*)
|
|
AC_RUN_IFELSE(
|
|
[AC_LANG_SOURCE([[
|
|
#include <locale.h>
|
|
#include <string.h>
|
|
#include <wchar.h>
|
|
int main ()
|
|
{
|
|
int result = 0;
|
|
if (setlocale (LC_ALL, "French_France.65001") != NULL)
|
|
{
|
|
wchar_t wc = (wchar_t) 0xBADFACE;
|
|
mbstate_t state;
|
|
|
|
memset (&state, '\0', sizeof (mbstate_t));
|
|
if (mbrtowc (&wc, "\303", 1, &state) == (size_t)(-2)
|
|
&& wc != (wchar_t) 0xBADFACE)
|
|
result |= 1;
|
|
}
|
|
if (setlocale (LC_ALL, "Japanese_Japan.932") != NULL)
|
|
{
|
|
wchar_t wc = (wchar_t) 0xBADFACE;
|
|
mbstate_t state;
|
|
|
|
memset (&state, '\0', sizeof (mbstate_t));
|
|
if (mbrtowc (&wc, "\226", 1, &state) == (size_t)(-2)
|
|
&& wc != (wchar_t) 0xBADFACE)
|
|
result |= 2;
|
|
}
|
|
if (setlocale (LC_ALL, "Chinese_Taiwan.950") != NULL)
|
|
{
|
|
wchar_t wc = (wchar_t) 0xBADFACE;
|
|
mbstate_t state;
|
|
|
|
memset (&state, '\0', sizeof (mbstate_t));
|
|
if (mbrtowc (&wc, "\245", 1, &state) == (size_t)(-2)
|
|
&& wc != (wchar_t) 0xBADFACE)
|
|
result |= 4;
|
|
}
|
|
if (setlocale (LC_ALL, "Chinese_China.936") != NULL)
|
|
{
|
|
wchar_t wc = (wchar_t) 0xBADFACE;
|
|
mbstate_t state;
|
|
|
|
memset (&state, '\0', sizeof (mbstate_t));
|
|
if (mbrtowc (&wc, "\261", 1, &state) == (size_t)(-2)
|
|
&& wc != (wchar_t) 0xBADFACE)
|
|
result |= 8;
|
|
}
|
|
return result;
|
|
}]])],
|
|
[gl_cv_func_mbrtowc_stores_incomplete=no],
|
|
[gl_cv_func_mbrtowc_stores_incomplete=yes],
|
|
[:])
|
|
;;
|
|
*)
|
|
AC_REQUIRE([gt_LOCALE_FR_UTF8])
|
|
if test $LOCALE_FR_UTF8 != none; then
|
|
AC_RUN_IFELSE(
|
|
[AC_LANG_SOURCE([[
|
|
#include <locale.h>
|
|
#include <string.h>
|
|
#include <wchar.h>
|
|
int main ()
|
|
{
|
|
if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
|
|
{
|
|
wchar_t wc = (wchar_t) 0xBADFACE;
|
|
mbstate_t state;
|
|
|
|
memset (&state, '\0', sizeof (mbstate_t));
|
|
if (mbrtowc (&wc, "\303", 1, &state) == (size_t)(-2)
|
|
&& wc != (wchar_t) 0xBADFACE)
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}]])],
|
|
[gl_cv_func_mbrtowc_stores_incomplete=no],
|
|
[gl_cv_func_mbrtowc_stores_incomplete=yes],
|
|
[:])
|
|
fi
|
|
;;
|
|
esac
|
|
])
|
|
])
|
|
|
|
dnl Test whether mbrtowc returns the correct value on empty input.
|
|
|
|
AC_DEFUN([gl_MBRTOWC_EMPTY_INPUT],
|
|
[
|
|
AC_REQUIRE([AC_PROG_CC])
|
|
AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
|
|
AC_CACHE_CHECK([whether mbrtowc works on empty input],
|
|
[gl_cv_func_mbrtowc_empty_input],
|
|
[
|
|
dnl Initial guess, used when cross-compiling or when no suitable locale
|
|
dnl is present.
|
|
changequote(,)dnl
|
|
case "$host_os" in
|
|
# Guess no on AIX and glibc systems.
|
|
aix* | *-gnu* | gnu*) gl_cv_func_mbrtowc_empty_input="guessing no" ;;
|
|
# Guess yes on native Windows.
|
|
mingw*) gl_cv_func_mbrtowc_empty_input="guessing yes" ;;
|
|
*) gl_cv_func_mbrtowc_empty_input="guessing yes" ;;
|
|
esac
|
|
changequote([,])dnl
|
|
AC_RUN_IFELSE(
|
|
[AC_LANG_SOURCE([[
|
|
#include <wchar.h>
|
|
static wchar_t wc;
|
|
static mbstate_t mbs;
|
|
int
|
|
main (void)
|
|
{
|
|
return mbrtowc (&wc, "", 0, &mbs) != (size_t) -2;
|
|
}]])],
|
|
[gl_cv_func_mbrtowc_empty_input=yes],
|
|
[gl_cv_func_mbrtowc_empty_input=no],
|
|
[:])
|
|
])
|
|
])
|
|
|
|
dnl Test whether mbrtowc reports encoding errors in the C locale.
|
|
dnl Although POSIX was never intended to allow this, the GNU C Library
|
|
dnl and other implementations do it. See:
|
|
dnl https://sourceware.org/bugzilla/show_bug.cgi?id=19932
|
|
|
|
AC_DEFUN([gl_MBRTOWC_C_LOCALE],
|
|
[
|
|
AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
|
|
AC_CACHE_CHECK([whether the C locale is free of encoding errors],
|
|
[gl_cv_func_mbrtowc_C_locale_sans_EILSEQ],
|
|
[
|
|
dnl Initial guess, used when cross-compiling or when no suitable locale
|
|
dnl is present.
|
|
gl_cv_func_mbrtowc_C_locale_sans_EILSEQ="$gl_cross_guess_normal"
|
|
|
|
AC_RUN_IFELSE(
|
|
[AC_LANG_PROGRAM(
|
|
[[#include <limits.h>
|
|
#include <locale.h>
|
|
#include <wchar.h>
|
|
]], [[
|
|
int i;
|
|
char *locale = setlocale (LC_ALL, "C");
|
|
if (! locale)
|
|
return 2;
|
|
for (i = CHAR_MIN; i <= CHAR_MAX; i++)
|
|
{
|
|
char c = i;
|
|
wchar_t wc;
|
|
mbstate_t mbs = { 0, };
|
|
size_t ss = mbrtowc (&wc, &c, 1, &mbs);
|
|
if (1 < ss)
|
|
return 3;
|
|
}
|
|
return 0;
|
|
]])],
|
|
[gl_cv_func_mbrtowc_C_locale_sans_EILSEQ=yes],
|
|
[gl_cv_func_mbrtowc_C_locale_sans_EILSEQ=no],
|
|
[case "$host_os" in
|
|
# Guess yes on native Windows.
|
|
mingw*) gl_cv_func_mbrtowc_C_locale_sans_EILSEQ="guessing yes" ;;
|
|
esac
|
|
])
|
|
])
|
|
])
|
|
|
|
# Prerequisites of lib/mbrtowc.c and lib/lc-charset-dispatch.c.
|
|
AC_DEFUN([gl_PREREQ_MBRTOWC], [
|
|
AC_REQUIRE([AC_C_INLINE])
|
|
:
|
|
])
|
|
|
|
# Prerequisites of lib/mbtowc-lock.c.
|
|
AC_DEFUN([gl_PREREQ_MBTOWC_LOCK],
|
|
[
|
|
gl_VISIBILITY
|
|
])
|
|
|
|
|
|
dnl From Paul Eggert
|
|
|
|
dnl This is an override of an autoconf macro.
|
|
|
|
AC_DEFUN([AC_FUNC_MBRTOWC],
|
|
[
|
|
dnl Same as AC_FUNC_MBRTOWC in autoconf-2.60.
|
|
AC_CACHE_CHECK([whether mbrtowc and mbstate_t are properly declared],
|
|
[gl_cv_func_mbrtowc],
|
|
[AC_LINK_IFELSE(
|
|
[AC_LANG_PROGRAM(
|
|
[[#include <wchar.h>]],
|
|
[[wchar_t wc;
|
|
char const s[] = "";
|
|
size_t n = 1;
|
|
mbstate_t state;
|
|
return ! (sizeof state && (mbrtowc) (&wc, s, n, &state));]])],
|
|
[gl_cv_func_mbrtowc=yes],
|
|
[gl_cv_func_mbrtowc=no])])
|
|
if test $gl_cv_func_mbrtowc = yes; then
|
|
AC_DEFINE([HAVE_MBRTOWC], [1],
|
|
[Define to 1 if mbrtowc and mbstate_t are properly declared.])
|
|
fi
|
|
])
|