0N/A# mbrtowc.m4 serial 18

0N/Adnl Copyright (C) 2001-2002, 2004-2005, 2008-2010 Free Software Foundation,

0N/Adnl Inc.

0N/Adnl This file is free software; the Free Software Foundation

0N/Adnl gives unlimited permission to copy and/or distribute it,

0N/Adnl with or without modifications, as long as this notice is preserved.

0N/A

0N/AAC_DEFUN([gl_FUNC_MBRTOWC],

0N/A[

0N/A AC_REQUIRE([gl_WCHAR_H_DEFAULTS])

0N/A

0N/A AC_REQUIRE([AC_TYPE_MBSTATE_T])

0N/A gl_MBSTATE_T_BROKEN

0N/A

0N/A AC_CHECK_FUNCS_ONCE([mbrtowc])

0N/A if test $ac_cv_func_mbrtowc = no; then

0N/A HAVE_MBRTOWC=0

873N/A else

0N/A if test $REPLACE_MBSTATE_T = 1; then

0N/A REPLACE_MBRTOWC=1

0N/A else

0N/A gl_MBRTOWC_NULL_ARG

0N/A gl_MBRTOWC_RETVAL

4044N/A gl_MBRTOWC_NUL_RETVAL

0N/A case "$gl_cv_func_mbrtowc_null_arg" in

0N/A *yes) ;;

0N/A *) AC_DEFINE([MBRTOWC_NULL_ARG_BUG], [1],

0N/A [Define if the mbrtowc function has the NULL string argument bug.])

0N/A REPLACE_MBRTOWC=1

0N/A ;;

0N/A esac

0N/A case "$gl_cv_func_mbrtowc_retval" in

0N/A *yes) ;;

2636N/A *) AC_DEFINE([MBRTOWC_RETVAL_BUG], [1],

2636N/A [Define if the mbrtowc function returns a wrong return value.])

2636N/A REPLACE_MBRTOWC=1

2636N/A ;;

0N/A esac

2636N/A case "$gl_cv_func_mbrtowc_nul_retval" in

2636N/A *yes) ;;

2636N/A *) AC_DEFINE([MBRTOWC_NUL_RETVAL_BUG], [1],

2636N/A [Define if the mbrtowc function does not return 0 for a NUL character.])

2636N/A REPLACE_MBRTOWC=1

0N/A ;;

2636N/A esac

2636N/A fi

2636N/A fi

2636N/A if test $HAVE_MBRTOWC = 0 || test $REPLACE_MBRTOWC = 1; then

2636N/A gl_REPLACE_WCHAR_H

2636N/A AC_LIBOBJ([mbrtowc])

2636N/A gl_PREREQ_MBRTOWC

2636N/A fi

2636N/A])

2636N/A

2636N/Adnl Test whether mbsinit() and mbrtowc() need to be overridden in a way that

2636N/Adnl redefines the semantics of the given mbstate_t type.

2636N/Adnl Result is REPLACE_MBSTATE_T.

2636N/Adnl When this is set to 1, we replace both mbsinit() and mbrtowc(), in order to

2636N/Adnl avoid inconsistencies.

2636N/A

2636N/AAC_DEFUN([gl_MBSTATE_T_BROKEN],

0N/A[

2636N/A AC_REQUIRE([gl_WCHAR_H_DEFAULTS])

2636N/A

2636N/A AC_REQUIRE([AC_TYPE_MBSTATE_T])

0N/A AC_CHECK_FUNCS_ONCE([mbsinit])

0N/A AC_CHECK_FUNCS_ONCE([mbrtowc])

2636N/A if test $ac_cv_func_mbsinit = yes && test $ac_cv_func_mbrtowc = yes; then

2636N/A gl_MBRTOWC_INCOMPLETE_STATE

2636N/A gl_MBRTOWC_SANITYCHECK

0N/A REPLACE_MBSTATE_T=0

2636N/A case "$gl_cv_func_mbrtowc_incomplete_state" in

2636N/A *yes) ;;

2636N/A *) REPLACE_MBSTATE_T=1 ;;

2636N/A esac

2636N/A case "$gl_cv_func_mbrtowc_sanitycheck" in

2636N/A *yes) ;;

2636N/A *) REPLACE_MBSTATE_T=1 ;;

2636N/A esac

2636N/A else

2636N/A REPLACE_MBSTATE_T=1

2636N/A fi

2636N/A if test $REPLACE_MBSTATE_T = 1; then

2636N/A gl_REPLACE_WCHAR_H

2636N/A fi

2636N/A])

2636N/A

2636N/Adnl Test whether mbrtowc puts the state into non-initial state when parsing an

2636N/Adnl incomplete multibyte character.

2636N/Adnl Result is gl_cv_func_mbrtowc_incomplete_state.

2636N/A

2636N/AAC_DEFUN([gl_MBRTOWC_INCOMPLETE_STATE],

2636N/A[

0N/A AC_REQUIRE([AC_PROG_CC])

0N/A AC_REQUIRE([gt_LOCALE_JA])

2636N/A AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles

2636N/A AC_CACHE_CHECK([whether mbrtowc handles incomplete characters],

2636N/A [gl_cv_func_mbrtowc_incomplete_state],

0N/A [

0N/A dnl Initial guess, used when cross-compiling or when no suitable locale

2636N/A dnl is present.

2636N/Achangequote(,)dnl

2636N/A case "$host_os" in

2636N/A # Guess no on AIX and OSF/1.

2636N/A aix* | osf*) gl_cv_func_mbrtowc_incomplete_state="guessing no" ;;

2636N/A # Guess yes otherwise.

2636N/A *) gl_cv_func_mbrtowc_incomplete_state="guessing yes" ;;

2636N/A esac

2636N/Achangequote([,])dnl

0N/A if test $LOCALE_JA != none; then

2636N/A AC_RUN_IFELSE(

2636N/A [AC_LANG_SOURCE([[

2636N/A#include <locale.h>

2636N/A#include <string.h>

2636N/A#include <wchar.h>

2636N/Aint main ()

2636N/A{

2636N/A if (setlocale (LC_ALL, "$LOCALE_JA") != NULL)

2636N/A {

2636N/A const char input[] = "B\217\253\344\217\251\316er"; /* "Büßer" */

2636N/A mbstate_t state;

2636N/A wchar_t wc;

2636N/A

2636N/A memset (&state, '\0', sizeof (mbstate_t));

2636N/A if (mbrtowc (&wc, input + 1, 1, &state) == (size_t)(-2))

2636N/A if (mbsinit (&state))

2636N/A return 1;

2636N/A }

0N/A return 0;

0N/A}]])],

2636N/A [gl_cv_func_mbrtowc_incomplete_state=yes],

2636N/A [gl_cv_func_mbrtowc_incomplete_state=no],

2636N/A [:])

2636N/A fi

2636N/A ])

2636N/A])

2636N/A

2636N/Adnl Test whether mbrtowc works not worse than mbtowc.

2636N/Adnl Result is gl_cv_func_mbrtowc_sanitycheck.

2636N/A

2636N/AAC_DEFUN([gl_MBRTOWC_SANITYCHECK],

0N/A[

0N/A AC_REQUIRE([AC_PROG_CC])

2636N/A AC_REQUIRE([gt_LOCALE_ZH_CN])

2636N/A AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles

2636N/A AC_CACHE_CHECK([whether mbrtowc works as well as mbtowc],

2636N/A [gl_cv_func_mbrtowc_sanitycheck],

0N/A [

2636N/A dnl Initial guess, used when cross-compiling or when no suitable locale

2636N/A dnl is present.

0N/Achangequote(,)dnl

0N/A case "$host_os" in

2636N/A # Guess no on Solaris 8.

2636N/A solaris2.8) gl_cv_func_mbrtowc_sanitycheck="guessing no" ;;

2636N/A # Guess yes otherwise.

2636N/A *) gl_cv_func_mbrtowc_sanitycheck="guessing yes" ;;

0N/A esac

2636N/Achangequote([,])dnl

2636N/A if test $LOCALE_ZH_CN != none; then

2636N/A AC_RUN_IFELSE(

2636N/A [AC_LANG_SOURCE([[

0N/A#include <locale.h>

2636N/A#include <stdlib.h>

2636N/A#include <string.h>

2636N/A#include <wchar.h>

0N/Aint main ()

2636N/A{

2636N/A /* This fails on Solaris 8:

2636N/A mbrtowc returns 2, and sets wc to 0x00F0.

0N/A mbtowc returns 4 (correct) and sets wc to 0x5EDC. */

2636N/A if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL)

2636N/A {

2636N/A char input[] = "B\250\271\201\060\211\070er"; /* "Büßer" */

2636N/A mbstate_t state;

2636N/A wchar_t wc;

2636N/A

2636N/A memset (&state, '\0', sizeof (mbstate_t));

2636N/A if (mbrtowc (&wc, input + 3, 6, &state) != 4

2636N/A && mbtowc (&wc, input + 3, 6) == 4)

0N/A return 1;

2636N/A }

2636N/A return 0;

2636N/A}]])],

2636N/A [gl_cv_func_mbrtowc_sanitycheck=yes],

2636N/A [gl_cv_func_mbrtowc_sanitycheck=no],

2636N/A [:])

2636N/A fi

2636N/A ])

2636N/A])

2636N/A

2636N/Adnl Test whether mbrtowc supports a NULL string argument correctly.

2636N/Adnl Result is gl_cv_func_mbrtowc_null_arg.

2636N/A

2636N/AAC_DEFUN([gl_MBRTOWC_NULL_ARG],

2636N/A[

2636N/A AC_REQUIRE([AC_PROG_CC])

2636N/A AC_REQUIRE([gt_LOCALE_FR_UTF8])

2636N/A AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles

2636N/A AC_CACHE_CHECK([whether mbrtowc handles a NULL string argument],

2636N/A [gl_cv_func_mbrtowc_null_arg],

2636N/A [

2636N/A dnl Initial guess, used when cross-compiling or when no suitable locale

2636N/A dnl is present.

2636N/Achangequote(,)dnl

2636N/A case "$host_os" in

2636N/A # Guess no on OSF/1.

2636N/A osf*) gl_cv_func_mbrtowc_null_arg="guessing no" ;;

2636N/A # Guess yes otherwise.

2636N/A *) gl_cv_func_mbrtowc_null_arg="guessing yes" ;;

0N/A esac

2636N/Achangequote([,])dnl

2636N/A if test $LOCALE_FR_UTF8 != none; then

2636N/A AC_RUN_IFELSE(

2636N/A [AC_LANG_SOURCE([[

0N/A#include <locale.h>

2636N/A#include <string.h>

2636N/A#include <wchar.h>

2636N/Aint main ()

2636N/A{

2636N/A if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)

2636N/A {

2636N/A mbstate_t state;

2636N/A wchar_t wc;

2636N/A int ret;

2636N/A

2636N/A memset (&state, '\0', sizeof (mbstate_t));

2636N/A wc = (wchar_t) 0xBADFACE;

2636N/A mbrtowc (&wc, NULL, 5, &state);

2636N/A /* Check that wc was not modified. */

2636N/A if (wc != (wchar_t) 0xBADFACE)

2636N/A return 1;

2636N/A }

2636N/A return 0;

0N/A}]])],

2636N/A [gl_cv_func_mbrtowc_null_arg=yes],

2636N/A [gl_cv_func_mbrtowc_null_arg=no],

2636N/A [:])

2636N/A fi

2636N/A ])

2636N/A])

2636N/A

2636N/Adnl Test whether mbrtowc, when parsing the end of a multibyte character,

2636N/Adnl correctly returns the number of bytes that were needed to complete the

2636N/Adnl character (not the total number of bytes of the multibyte character).

2636N/Adnl Result is gl_cv_func_mbrtowc_retval.

2636N/A

2636N/AAC_DEFUN([gl_MBRTOWC_RETVAL],

2636N/A[

2636N/A AC_REQUIRE([AC_PROG_CC])

2636N/A AC_REQUIRE([gt_LOCALE_FR_UTF8])

2636N/A AC_REQUIRE([gt_LOCALE_JA])

2636N/A AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles

2636N/A AC_CACHE_CHECK([whether mbrtowc has a correct return value],

2636N/A [gl_cv_func_mbrtowc_retval],

2636N/A [

2636N/A dnl Initial guess, used when cross-compiling or when no suitable locale

2636N/A dnl is present.

2636N/Achangequote(,)dnl

2636N/A case "$host_os" in

2636N/A # Guess no on HP-UX and Solaris.

2636N/A hpux* | solaris*) gl_cv_func_mbrtowc_retval="guessing no" ;;

2636N/A # Guess yes otherwise.

2636N/A *) gl_cv_func_mbrtowc_retval="guessing yes" ;;

2636N/A esac

2636N/Achangequote([,])dnl

2636N/A if test $LOCALE_FR_UTF8 != none || test $LOCALE_JA != none; then

2636N/A AC_RUN_IFELSE(

2636N/A [AC_LANG_SOURCE([[

2636N/A#include <locale.h>

2636N/A#include <string.h>

2636N/A#include <wchar.h>

2636N/Aint main ()

0N/A{

0N/A /* This fails on Solaris. */

2636N/A if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)

2636N/A {

2636N/A char input[] = "B\303\274\303\237er"; /* "Büßer" */

0N/A mbstate_t state;

0N/A wchar_t wc;

2636N/A

2636N/A memset (&state, '\0', sizeof (mbstate_t));

2636N/A if (mbrtowc (&wc, input + 1, 1, &state) == (size_t)(-2))

0N/A {

2636N/A input[1] = '\0';

2636N/A if (mbrtowc (&wc, input + 2, 5, &state) != 1)

2636N/A return 1;

2636N/A }

2636N/A }

2636N/A /* This fails on HP-UX 11.11. */

2636N/A if (setlocale (LC_ALL, "$LOCALE_JA") != NULL)

2636N/A {

2636N/A char input[] = "B\217\253\344\217\251\316er"; /* "Büßer" */

2636N/A mbstate_t state;

2636N/A wchar_t wc;

2636N/A

2636N/A memset (&state, '\0', sizeof (mbstate_t));

2636N/A if (mbrtowc (&wc, input + 1, 1, &state) == (size_t)(-2))

2636N/A {

2636N/A input[1] = '\0';

2636N/A if (mbrtowc (&wc, input + 2, 5, &state) != 2)

2636N/A return 1;

2636N/A }

0N/A }

0N/A return 0;

2636N/A}]])],

2636N/A [gl_cv_func_mbrtowc_retval=yes],

2636N/A [gl_cv_func_mbrtowc_retval=no],

2636N/A [:])

2636N/A fi

2636N/A ])

2636N/A])

2636N/A

2636N/Adnl Test whether mbrtowc, when parsing a NUL character, correctly returns 0.

4005N/Adnl Result is gl_cv_func_mbrtowc_nul_retval.

4005N/A

2636N/AAC_DEFUN([gl_MBRTOWC_NUL_RETVAL],

2636N/A[

2636N/A AC_REQUIRE([AC_PROG_CC])

2636N/A AC_REQUIRE([gt_LOCALE_ZH_CN])

2636N/A AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles

2636N/A AC_CACHE_CHECK([whether mbrtowc returns 0 when parsing a NUL character],

2636N/A [gl_cv_func_mbrtowc_nul_retval],

2636N/A [

2636N/A dnl Initial guess, used when cross-compiling or when no suitable locale

2636N/A dnl is present.

2636N/Achangequote(,)dnl

2636N/A case "$host_os" in

2636N/A # Guess no on Solaris 8 and 9.

2636N/A solaris2.[89]) gl_cv_func_mbrtowc_nul_retval="guessing no" ;;

2636N/A # Guess yes otherwise.

2636N/A *) gl_cv_func_mbrtowc_nul_retval="guessing yes" ;;

0N/A esac

0N/Achangequote([,])dnl

2636N/A if test $LOCALE_ZH_CN != none; then

2636N/A AC_RUN_IFELSE(

0N/A [AC_LANG_SOURCE([[

0N/A#include <locale.h>

2636N/A#include <string.h>

2636N/A#include <wchar.h>

2636N/Aint main ()

0N/A{

2636N/A /* This fails on Solaris 8 and 9. */

2636N/A if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL)

2636N/A {

0N/A mbstate_t state;

2636N/A wchar_t wc;

2636N/A

2636N/A memset (&state, '\0', sizeof (mbstate_t));

0N/A if (mbrtowc (&wc, "", 1, &state) != 0)

2636N/A return 1;

2636N/A }

2636N/A return 0;

2636N/A}]])],

2636N/A [gl_cv_func_mbrtowc_nul_retval=yes],

2636N/A [gl_cv_func_mbrtowc_nul_retval=no],

2636N/A [:])

2636N/A fi

2636N/A ])

2636N/A])

2636N/A

2636N/A# Prerequisites of lib/mbrtowc.c.

2636N/AAC_DEFUN([gl_PREREQ_MBRTOWC], [

0N/A :

0N/A])

2636N/A

2636N/A

2636N/Adnl From Paul Eggert

0N/A

0N/Adnl This override of an autoconf macro can be removed when autoconf 2.60 or

2636N/Adnl newer can be assumed everywhere.

2636N/A

2636N/Am4_if(m4_version_compare(m4_defn([m4_PACKAGE_VERSION]),[2.60]),[-1],[

0N/AAC_DEFUN([AC_FUNC_MBRTOWC],

0N/A[

2636N/A dnl Same as AC_FUNC_MBRTOWC in autoconf-2.60.

2636N/A AC_CACHE_CHECK([whether mbrtowc and mbstate_t are properly declared],

0N/A gl_cv_func_mbrtowc,

0N/A [AC_LINK_IFELSE(

2636N/A [AC_LANG_PROGRAM(

2636N/A [[#include <wchar.h>]],

2636N/A [[wchar_t wc;

2636N/A char const s[] = "";

2636N/A size_t n = 1;

2636N/A mbstate_t state;

2636N/A return ! (sizeof state && (mbrtowc) (&wc, s, n, &state));]])],

2636N/A gl_cv_func_mbrtowc=yes,

2636N/A gl_cv_func_mbrtowc=no)])

2636N/A if test $gl_cv_func_mbrtowc = yes; then

2636N/A AC_DEFINE([HAVE_MBRTOWC], [1],

2636N/A [Define to 1 if mbrtowc and mbstate_t are properly declared.])

2636N/A fi

2636N/A])

2636N/A])

2636N/A