+++ /dev/null
-# mbrtowc.m4 serial 16
-dnl Copyright (C) 2001-2002, 2004-2005, 2008, 2009 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_MBRTOWC],
-[
- AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
-
- AC_REQUIRE([AC_TYPE_MBSTATE_T])
- gl_MBSTATE_T_BROKEN
- if test $REPLACE_MBSTATE_T = 1; then
- REPLACE_MBRTOWC=1
- fi
- AC_CHECK_FUNCS_ONCE([mbrtowc])
- if test $ac_cv_func_mbrtowc = no; then
- HAVE_MBRTOWC=0
- fi
- if test $HAVE_MBRTOWC != 0 && test $REPLACE_MBRTOWC != 1; then
- gl_MBRTOWC_NULL_ARG
- gl_MBRTOWC_RETVAL
- gl_MBRTOWC_NUL_RETVAL
- case "$gl_cv_func_mbrtowc_null_arg" in
- *yes) ;;
- *) AC_DEFINE([MBRTOWC_NULL_ARG_BUG], [1],
- [Define if the mbrtowc function has the NULL string argument bug.])
- REPLACE_MBRTOWC=1
- ;;
- esac
- case "$gl_cv_func_mbrtowc_retval" in
- *yes) ;;
- *) AC_DEFINE([MBRTOWC_RETVAL_BUG], [1],
- [Define if the mbrtowc function returns a wrong return value.])
- REPLACE_MBRTOWC=1
- ;;
- esac
- case "$gl_cv_func_mbrtowc_nul_retval" in
- *yes) ;;
- *) AC_DEFINE([MBRTOWC_NUL_RETVAL_BUG], [1],
- [Define if the mbrtowc function does not return 0 for a NUL character.])
- REPLACE_MBRTOWC=1
- ;;
- esac
- fi
- if test $HAVE_MBRTOWC = 0 || test $REPLACE_MBRTOWC = 1; then
- gl_REPLACE_WCHAR_H
- AC_LIBOBJ([mbrtowc])
- gl_PREREQ_MBRTOWC
- fi
-])
-
-dnl Test whether mbsinit() and mbrtowc() need to be overridden in a way that
-dnl redefines the semantics of the given mbstate_t type.
-dnl Result is REPLACE_MBSTATE_T.
-dnl When this is set to 1, we replace both mbsinit() and mbrtowc(), in order to
-dnl avoid inconsistencies.
-
-AC_DEFUN([gl_MBSTATE_T_BROKEN],
-[
- AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
-
- AC_REQUIRE([AC_TYPE_MBSTATE_T])
- AC_CHECK_FUNCS_ONCE([mbsinit])
- AC_CHECK_FUNCS_ONCE([mbrtowc])
- if test $ac_cv_func_mbsinit = yes && test $ac_cv_func_mbrtowc = yes; then
- gl_MBRTOWC_INCOMPLETE_STATE
- gl_MBRTOWC_SANITYCHECK
- REPLACE_MBSTATE_T=0
- case "$gl_cv_func_mbrtowc_incomplete_state" in
- *yes) ;;
- *) REPLACE_MBSTATE_T=1 ;;
- esac
- case "$gl_cv_func_mbrtowc_sanitycheck" in
- *yes) ;;
- *) REPLACE_MBSTATE_T=1 ;;
- esac
- else
- REPLACE_MBSTATE_T=1
- fi
- if test $REPLACE_MBSTATE_T = 1; then
- gl_REPLACE_WCHAR_H
- fi
-])
-
-dnl Test whether mbrtowc puts the state into non-initial state when parsing an
-dnl incomplete multibyte character.
-dnl Result is gl_cv_func_mbrtowc_incomplete_state.
-
-AC_DEFUN([gl_MBRTOWC_INCOMPLETE_STATE],
-[
- AC_REQUIRE([AC_PROG_CC])
- AC_REQUIRE([gt_LOCALE_JA])
- AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
- AC_CACHE_CHECK([whether mbrtowc handles incomplete characters],
- [gl_cv_func_mbrtowc_incomplete_state],
- [
- dnl Initial guess, used when cross-compiling or when no suitable locale
- dnl is present.
-changequote(,)dnl
- case "$host_os" in
- # Guess no on AIX and OSF/1.
- osf*) gl_cv_func_mbrtowc_incomplete_state="guessing no" ;;
- # Guess yes otherwise.
- *) gl_cv_func_mbrtowc_incomplete_state="guessing yes" ;;
- esac
-changequote([,])dnl
- if test $LOCALE_JA != none; then
- AC_TRY_RUN([
-#include <locale.h>
-#include <string.h>
-#include <wchar.h>
-int main ()
-{
- if (setlocale (LC_ALL, "$LOCALE_JA") != NULL)
- {
- const char input[] = "B\217\253\344\217\251\316er"; /* "Büßer" */
- mbstate_t state;
- wchar_t wc;
-
- memset (&state, '\0', sizeof (mbstate_t));
- if (mbrtowc (&wc, input + 1, 1, &state) == (size_t)(-2))
- if (mbsinit (&state))
- return 1;
- }
- return 0;
-}],
- [gl_cv_func_mbrtowc_incomplete_state=yes],
- [gl_cv_func_mbrtowc_incomplete_state=no],
- [:])
- fi
- ])
-])
-
-dnl Test whether mbrtowc works not worse than mbtowc.
-dnl Result is gl_cv_func_mbrtowc_sanitycheck.
-
-AC_DEFUN([gl_MBRTOWC_SANITYCHECK],
-[
- 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 works as well as mbtowc],
- [gl_cv_func_mbrtowc_sanitycheck],
- [
- 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.
- solaris2.8) gl_cv_func_mbrtowc_sanitycheck="guessing no" ;;
- # Guess yes otherwise.
- *) gl_cv_func_mbrtowc_sanitycheck="guessing yes" ;;
- esac
-changequote([,])dnl
- if test $LOCALE_ZH_CN != none; then
- AC_TRY_RUN([
-#include <locale.h>
-#include <stdlib.h>
-#include <string.h>
-#include <wchar.h>
-int main ()
-{
- /* This fails on Solaris 8:
- mbrtowc returns 2, and sets wc to 0x00F0.
- mbtowc returns 4 (correct) and sets wc to 0x5EDC. */
- if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL)
- {
- char input[] = "B\250\271\201\060\211\070er"; /* "Büßer" */
- mbstate_t state;
- wchar_t wc;
-
- memset (&state, '\0', sizeof (mbstate_t));
- if (mbrtowc (&wc, input + 3, 6, &state) != 4
- && mbtowc (&wc, input + 3, 6) == 4)
- return 1;
- }
- return 0;
-}],
- [gl_cv_func_mbrtowc_sanitycheck=yes],
- [gl_cv_func_mbrtowc_sanitycheck=no],
- [:])
- fi
- ])
-])
-
-dnl Test whether mbrtowc supports a NULL string argument correctly.
-dnl Result is gl_cv_func_mbrtowc_null_arg.
-
-AC_DEFUN([gl_MBRTOWC_NULL_ARG],
-[
- AC_REQUIRE([AC_PROG_CC])
- AC_REQUIRE([gt_LOCALE_FR_UTF8])
- AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
- AC_CACHE_CHECK([whether mbrtowc handles a NULL string argument],
- [gl_cv_func_mbrtowc_null_arg],
- [
- dnl Initial guess, used when cross-compiling or when no suitable locale
- dnl is present.
-changequote(,)dnl
- case "$host_os" in
- # Guess no on OSF/1.
- osf*) gl_cv_func_mbrtowc_null_arg="guessing no" ;;
- # Guess yes otherwise.
- *) gl_cv_func_mbrtowc_null_arg="guessing yes" ;;
- esac
-changequote([,])dnl
- if test $LOCALE_FR_UTF8 != none; then
- AC_TRY_RUN([
-#include <locale.h>
-#include <string.h>
-#include <wchar.h>
-int main ()
-{
- if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
- {
- mbstate_t state;
- wchar_t wc;
- int ret;
-
- memset (&state, '\0', sizeof (mbstate_t));
- wc = (wchar_t) 0xBADFACE;
- mbrtowc (&wc, NULL, 5, &state);
- /* Check that wc was not modified. */
- if (wc != (wchar_t) 0xBADFACE)
- return 1;
- }
- return 0;
-}], [gl_cv_func_mbrtowc_null_arg=yes], [gl_cv_func_mbrtowc_null_arg=no], [:])
- fi
- ])
-])
-
-dnl Test whether mbrtowc, when parsing the end of a multibyte character,
-dnl correctly returns the number of bytes that were needed to complete the
-dnl character (not the total number of bytes of the multibyte character).
-dnl Result is gl_cv_func_mbrtowc_retval.
-
-AC_DEFUN([gl_MBRTOWC_RETVAL],
-[
- AC_REQUIRE([AC_PROG_CC])
- AC_REQUIRE([gt_LOCALE_FR_UTF8])
- AC_REQUIRE([gt_LOCALE_JA])
- AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
- AC_CACHE_CHECK([whether mbrtowc has a correct return value],
- [gl_cv_func_mbrtowc_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 HP-UX and Solaris.
- hpux* | solaris*) gl_cv_func_mbrtowc_retval="guessing no" ;;
- # Guess yes otherwise.
- *) gl_cv_func_mbrtowc_retval="guessing yes" ;;
- esac
-changequote([,])dnl
- if test $LOCALE_FR_UTF8 != none || test $LOCALE_JA != none; then
- AC_TRY_RUN([
-#include <locale.h>
-#include <string.h>
-#include <wchar.h>
-int main ()
-{
- /* This fails on Solaris. */
- if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
- {
- char input[] = "B\303\274\303\237er"; /* "Büßer" */
- mbstate_t state;
- wchar_t wc;
-
- memset (&state, '\0', sizeof (mbstate_t));
- if (mbrtowc (&wc, input + 1, 1, &state) == (size_t)(-2))
- {
- input[1] = '\0';
- if (mbrtowc (&wc, input + 2, 5, &state) != 1)
- return 1;
- }
- }
- /* This fails on HP-UX 11.11. */
- if (setlocale (LC_ALL, "$LOCALE_JA") != NULL)
- {
- char input[] = "B\217\253\344\217\251\316er"; /* "Büßer" */
- mbstate_t state;
- wchar_t wc;
-
- memset (&state, '\0', sizeof (mbstate_t));
- if (mbrtowc (&wc, input + 1, 1, &state) == (size_t)(-2))
- {
- input[1] = '\0';
- if (mbrtowc (&wc, input + 2, 5, &state) != 2)
- return 1;
- }
- }
- return 0;
-}],
- [gl_cv_func_mbrtowc_retval=yes],
- [gl_cv_func_mbrtowc_retval=no],
- [:])
- fi
- ])
-])
-
-dnl Test whether mbrtowc, when parsing a NUL character, correctly returns 0.
-dnl Result is gl_cv_func_mbrtowc_nul_retval.
-
-AC_DEFUN([gl_MBRTOWC_NUL_RETVAL],
-[
- AC_REQUIRE([AC_PROG_CC])
- AC_REQUIRE([gt_LOCALE_ZH_CN])
- AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
- AC_CACHE_CHECK([whether mbrtowc returns 0 when parsing a NUL character],
- [gl_cv_func_mbrtowc_nul_retval],
- [
- dnl Initial guess, used when cross-compiling or when no suitable locale
- dnl is present.
-changequote(,)dnl
- case "$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 $LOCALE_ZH_CN != none; then
- AC_TRY_RUN([
-#include <locale.h>
-#include <string.h>
-#include <wchar.h>
-int main ()
-{
- /* This fails on Solaris 8 and 9. */
- if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL)
- {
- mbstate_t state;
- wchar_t wc;
-
- memset (&state, '\0', sizeof (mbstate_t));
- if (mbrtowc (&wc, "", 1, &state) != 0)
- return 1;
- }
- return 0;
-}],
- [gl_cv_func_mbrtowc_nul_retval=yes],
- [gl_cv_func_mbrtowc_nul_retval=no],
- [:])
- fi
- ])
-])
-
-# Prerequisites of lib/mbrtowc.c.
-AC_DEFUN([gl_PREREQ_MBRTOWC], [
- :
-])
-
-
-dnl From Paul Eggert
-
-dnl This override of an autoconf macro can be removed when autoconf 2.60 or
-dnl newer can be assumed everywhere.
-
-m4_if(m4_version_compare(m4_defn([m4_PACKAGE_VERSION]),[2.60]),[-1],[
-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
-])
-])
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