2N/A# mbrtowc.m4 serial 18

2N/Adnl Copyright (C) 2001-2002, 2004-2005, 2008-2010 Free Software Foundation,

2N/Adnl Inc.

2N/Adnl This file is free software; the Free Software Foundation

2N/Adnl gives unlimited permission to copy and/or distribute it,

2N/Adnl with or without modifications, as long as this notice is preserved.

2N/A

2N/AAC_DEFUN([gl_FUNC_MBRTOWC],

2N/A[

2N/A AC_REQUIRE([gl_WCHAR_H_DEFAULTS])

2N/A

2N/A AC_REQUIRE([AC_TYPE_MBSTATE_T])

2N/A gl_MBSTATE_T_BROKEN

2N/A

2N/A AC_CHECK_FUNCS_ONCE([mbrtowc])

2N/A if test $ac_cv_func_mbrtowc = no; then

2N/A HAVE_MBRTOWC=0

2N/A else

2N/A if test $REPLACE_MBSTATE_T = 1; then

2N/A REPLACE_MBRTOWC=1

2N/A else

2N/A gl_MBRTOWC_NULL_ARG

2N/A gl_MBRTOWC_RETVAL

2N/A gl_MBRTOWC_NUL_RETVAL

2N/A case "$gl_cv_func_mbrtowc_null_arg" in

2N/A *yes) ;;

2N/A *) AC_DEFINE([MBRTOWC_NULL_ARG_BUG], [1],

2N/A [Define if the mbrtowc function has the NULL string argument bug.])

2N/A REPLACE_MBRTOWC=1

2N/A ;;

2N/A esac

2N/A case "$gl_cv_func_mbrtowc_retval" in

2N/A *yes) ;;

2N/A *) AC_DEFINE([MBRTOWC_RETVAL_BUG], [1],

2N/A [Define if the mbrtowc function returns a wrong return value.])

2N/A REPLACE_MBRTOWC=1

2N/A ;;

2N/A esac

2N/A case "$gl_cv_func_mbrtowc_nul_retval" in

2N/A *yes) ;;

2N/A *) AC_DEFINE([MBRTOWC_NUL_RETVAL_BUG], [1],

2N/A [Define if the mbrtowc function does not return 0 for a NUL character.])

2N/A REPLACE_MBRTOWC=1

2N/A ;;

2N/A esac

2N/A fi

2N/A fi

2N/A if test $HAVE_MBRTOWC = 0 || test $REPLACE_MBRTOWC = 1; then

2N/A gl_REPLACE_WCHAR_H

2N/A AC_LIBOBJ([mbrtowc])

2N/A gl_PREREQ_MBRTOWC

2N/A fi

2N/A])

2N/A

2N/Adnl Test whether mbsinit() and mbrtowc() need to be overridden in a way that

2N/Adnl redefines the semantics of the given mbstate_t type.

2N/Adnl Result is REPLACE_MBSTATE_T.

2N/Adnl When this is set to 1, we replace both mbsinit() and mbrtowc(), in order to

2N/Adnl avoid inconsistencies.

2N/A

2N/AAC_DEFUN([gl_MBSTATE_T_BROKEN],

2N/A[

2N/A AC_REQUIRE([gl_WCHAR_H_DEFAULTS])

2N/A

2N/A AC_REQUIRE([AC_TYPE_MBSTATE_T])

2N/A AC_CHECK_FUNCS_ONCE([mbsinit])

2N/A AC_CHECK_FUNCS_ONCE([mbrtowc])

2N/A if test $ac_cv_func_mbsinit = yes && test $ac_cv_func_mbrtowc = yes; then

2N/A gl_MBRTOWC_INCOMPLETE_STATE

2N/A gl_MBRTOWC_SANITYCHECK

2N/A REPLACE_MBSTATE_T=0

2N/A case "$gl_cv_func_mbrtowc_incomplete_state" in

2N/A *yes) ;;

2N/A *) REPLACE_MBSTATE_T=1 ;;

2N/A esac

2N/A case "$gl_cv_func_mbrtowc_sanitycheck" in

2N/A *yes) ;;

2N/A *) REPLACE_MBSTATE_T=1 ;;

2N/A esac

2N/A else

2N/A REPLACE_MBSTATE_T=1

2N/A fi

2N/A if test $REPLACE_MBSTATE_T = 1; then

2N/A gl_REPLACE_WCHAR_H

2N/A fi

2N/A])

2N/A

2N/Adnl Test whether mbrtowc puts the state into non-initial state when parsing an

2N/Adnl incomplete multibyte character.

2N/Adnl Result is gl_cv_func_mbrtowc_incomplete_state.

2N/A

2N/AAC_DEFUN([gl_MBRTOWC_INCOMPLETE_STATE],

2N/A[

2N/A AC_REQUIRE([AC_PROG_CC])

2N/A AC_REQUIRE([gt_LOCALE_JA])

2N/A AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles

2N/A AC_CACHE_CHECK([whether mbrtowc handles incomplete characters],

2N/A [gl_cv_func_mbrtowc_incomplete_state],

2N/A [

2N/A dnl Initial guess, used when cross-compiling or when no suitable locale

2N/A dnl is present.

2N/Achangequote(,)dnl

2N/A case "$host_os" in

2N/A # Guess no on AIX and OSF/1.

2N/A aix* | osf*) gl_cv_func_mbrtowc_incomplete_state="guessing no" ;;

2N/A # Guess yes otherwise.

2N/A *) gl_cv_func_mbrtowc_incomplete_state="guessing yes" ;;

2N/A esac

2N/Achangequote([,])dnl

2N/A if test $LOCALE_JA != none; then

2N/A AC_RUN_IFELSE(

2N/A [AC_LANG_SOURCE([[

2N/A#include <locale.h>

2N/A#include <string.h>

2N/A#include <wchar.h>

2N/Aint main ()

2N/A{

2N/A if (setlocale (LC_ALL, "$LOCALE_JA") != NULL)

2N/A {

2N/A const char input[] = "B\217\253\344\217\251\316er"; /* "Büßer" */

2N/A mbstate_t state;

2N/A wchar_t wc;

2N/A

2N/A memset (&state, '\0', sizeof (mbstate_t));

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

2N/A if (mbsinit (&state))

2N/A return 1;

2N/A }

2N/A return 0;

2N/A}]])],

2N/A [gl_cv_func_mbrtowc_incomplete_state=yes],

2N/A [gl_cv_func_mbrtowc_incomplete_state=no],

2N/A [:])

2N/A fi

2N/A ])

2N/A])

2N/A

2N/Adnl Test whether mbrtowc works not worse than mbtowc.

2N/Adnl Result is gl_cv_func_mbrtowc_sanitycheck.

2N/A

2N/AAC_DEFUN([gl_MBRTOWC_SANITYCHECK],

2N/A[

2N/A AC_REQUIRE([AC_PROG_CC])

2N/A AC_REQUIRE([gt_LOCALE_ZH_CN])

2N/A AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles

2N/A AC_CACHE_CHECK([whether mbrtowc works as well as mbtowc],

2N/A [gl_cv_func_mbrtowc_sanitycheck],

2N/A [

2N/A dnl Initial guess, used when cross-compiling or when no suitable locale

2N/A dnl is present.

2N/Achangequote(,)dnl

2N/A case "$host_os" in

2N/A # Guess no on Solaris 8.

2N/A solaris2.8) gl_cv_func_mbrtowc_sanitycheck="guessing no" ;;

2N/A # Guess yes otherwise.

2N/A *) gl_cv_func_mbrtowc_sanitycheck="guessing yes" ;;

2N/A esac

2N/Achangequote([,])dnl

2N/A if test $LOCALE_ZH_CN != none; then

2N/A AC_RUN_IFELSE(

2N/A [AC_LANG_SOURCE([[

2N/A#include <locale.h>

2N/A#include <stdlib.h>

2N/A#include <string.h>

2N/A#include <wchar.h>

2N/Aint main ()

2N/A{

2N/A /* This fails on Solaris 8:

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

2N/A mbtowc returns 4 (correct) and sets wc to 0x5EDC. */

2N/A if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL)

2N/A {

2N/A char input[] = "B\250\271\201\060\211\070er"; /* "Büßer" */

2N/A mbstate_t state;

2N/A wchar_t wc;

2N/A

2N/A memset (&state, '\0', sizeof (mbstate_t));

2N/A if (mbrtowc (&wc, input + 3, 6, &state) != 4

2N/A && mbtowc (&wc, input + 3, 6) == 4)

2N/A return 1;

2N/A }

2N/A return 0;

2N/A}]])],

2N/A [gl_cv_func_mbrtowc_sanitycheck=yes],

2N/A [gl_cv_func_mbrtowc_sanitycheck=no],

2N/A [:])

2N/A fi

2N/A ])

2N/A])

2N/A

2N/Adnl Test whether mbrtowc supports a NULL string argument correctly.

2N/Adnl Result is gl_cv_func_mbrtowc_null_arg.

2N/A

2N/AAC_DEFUN([gl_MBRTOWC_NULL_ARG],

2N/A[

2N/A AC_REQUIRE([AC_PROG_CC])

2N/A AC_REQUIRE([gt_LOCALE_FR_UTF8])

2N/A AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles

2N/A AC_CACHE_CHECK([whether mbrtowc handles a NULL string argument],

2N/A [gl_cv_func_mbrtowc_null_arg],

2N/A [

2N/A dnl Initial guess, used when cross-compiling or when no suitable locale

2N/A dnl is present.

2N/Achangequote(,)dnl

2N/A case "$host_os" in

2N/A # Guess no on OSF/1.

2N/A osf*) gl_cv_func_mbrtowc_null_arg="guessing no" ;;

2N/A # Guess yes otherwise.

2N/A *) gl_cv_func_mbrtowc_null_arg="guessing yes" ;;

2N/A esac

2N/Achangequote([,])dnl

2N/A if test $LOCALE_FR_UTF8 != none; then

2N/A AC_RUN_IFELSE(

2N/A [AC_LANG_SOURCE([[

2N/A#include <locale.h>

2N/A#include <string.h>

2N/A#include <wchar.h>

2N/Aint main ()

2N/A{

2N/A if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)

2N/A {

2N/A mbstate_t state;

2N/A wchar_t wc;

2N/A int ret;

2N/A

2N/A memset (&state, '\0', sizeof (mbstate_t));

2N/A wc = (wchar_t) 0xBADFACE;

2N/A mbrtowc (&wc, NULL, 5, &state);

2N/A /* Check that wc was not modified. */

2N/A if (wc != (wchar_t) 0xBADFACE)

2N/A return 1;

2N/A }

2N/A return 0;

2N/A}]])],

2N/A [gl_cv_func_mbrtowc_null_arg=yes],

2N/A [gl_cv_func_mbrtowc_null_arg=no],

2N/A [:])

2N/A fi

2N/A ])

2N/A])

2N/A

2N/Adnl Test whether mbrtowc, when parsing the end of a multibyte character,

2N/Adnl correctly returns the number of bytes that were needed to complete the

2N/Adnl character (not the total number of bytes of the multibyte character).

2N/Adnl Result is gl_cv_func_mbrtowc_retval.

2N/A

2N/AAC_DEFUN([gl_MBRTOWC_RETVAL],

2N/A[

2N/A AC_REQUIRE([AC_PROG_CC])

2N/A AC_REQUIRE([gt_LOCALE_FR_UTF8])

2N/A AC_REQUIRE([gt_LOCALE_JA])

2N/A AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles

2N/A AC_CACHE_CHECK([whether mbrtowc has a correct return value],

2N/A [gl_cv_func_mbrtowc_retval],

2N/A [

2N/A dnl Initial guess, used when cross-compiling or when no suitable locale

2N/A dnl is present.

2N/Achangequote(,)dnl

2N/A case "$host_os" in

2N/A # Guess no on HP-UX and Solaris.

2N/A hpux* | solaris*) gl_cv_func_mbrtowc_retval="guessing no" ;;

2N/A # Guess yes otherwise.

2N/A *) gl_cv_func_mbrtowc_retval="guessing yes" ;;

2N/A esac

2N/Achangequote([,])dnl

2N/A if test $LOCALE_FR_UTF8 != none || test $LOCALE_JA != none; then

2N/A AC_RUN_IFELSE(

2N/A [AC_LANG_SOURCE([[

2N/A#include <locale.h>

2N/A#include <string.h>

2N/A#include <wchar.h>

2N/Aint main ()

2N/A{

2N/A /* This fails on Solaris. */

2N/A if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)

2N/A {

2N/A char input[] = "B\303\274\303\237er"; /* "Büßer" */

2N/A mbstate_t state;

2N/A wchar_t wc;

2N/A

2N/A memset (&state, '\0', sizeof (mbstate_t));

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

2N/A {

2N/A input[1] = '\0';

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

2N/A return 1;

2N/A }

2N/A }

2N/A /* This fails on HP-UX 11.11. */

2N/A if (setlocale (LC_ALL, "$LOCALE_JA") != NULL)

2N/A {

2N/A char input[] = "B\217\253\344\217\251\316er"; /* "Büßer" */

2N/A mbstate_t state;

2N/A wchar_t wc;

2N/A

2N/A memset (&state, '\0', sizeof (mbstate_t));

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

2N/A {

2N/A input[1] = '\0';

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

2N/A return 1;

2N/A }

2N/A }

2N/A return 0;

2N/A}]])],

2N/A [gl_cv_func_mbrtowc_retval=yes],

2N/A [gl_cv_func_mbrtowc_retval=no],

2N/A [:])

2N/A fi

2N/A ])

2N/A])

2N/A

2N/Adnl Test whether mbrtowc, when parsing a NUL character, correctly returns 0.

2N/Adnl Result is gl_cv_func_mbrtowc_nul_retval.

2N/A

2N/AAC_DEFUN([gl_MBRTOWC_NUL_RETVAL],

2N/A[

2N/A AC_REQUIRE([AC_PROG_CC])

2N/A AC_REQUIRE([gt_LOCALE_ZH_CN])

2N/A AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles

2N/A AC_CACHE_CHECK([whether mbrtowc returns 0 when parsing a NUL character],

2N/A [gl_cv_func_mbrtowc_nul_retval],

2N/A [

2N/A dnl Initial guess, used when cross-compiling or when no suitable locale

2N/A dnl is present.

2N/Achangequote(,)dnl

2N/A case "$host_os" in

2N/A # Guess no on Solaris 8 and 9.

2N/A solaris2.[89]) gl_cv_func_mbrtowc_nul_retval="guessing no" ;;

2N/A # Guess yes otherwise.

2N/A *) gl_cv_func_mbrtowc_nul_retval="guessing yes" ;;

2N/A esac

2N/Achangequote([,])dnl

2N/A if test $LOCALE_ZH_CN != none; then

2N/A AC_RUN_IFELSE(

2N/A [AC_LANG_SOURCE([[

2N/A#include <locale.h>

2N/A#include <string.h>

2N/A#include <wchar.h>

2N/Aint main ()

2N/A{

2N/A /* This fails on Solaris 8 and 9. */

2N/A if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL)

2N/A {

2N/A mbstate_t state;

2N/A wchar_t wc;

2N/A

2N/A memset (&state, '\0', sizeof (mbstate_t));

2N/A if (mbrtowc (&wc, "", 1, &state) != 0)

2N/A return 1;

2N/A }

2N/A return 0;

2N/A}]])],

2N/A [gl_cv_func_mbrtowc_nul_retval=yes],

2N/A [gl_cv_func_mbrtowc_nul_retval=no],

2N/A [:])

2N/A fi

2N/A ])

2N/A])

2N/A

2N/A# Prerequisites of lib/mbrtowc.c.

2N/AAC_DEFUN([gl_PREREQ_MBRTOWC], [

2N/A :

2N/A])

2N/A

2N/A

2N/Adnl From Paul Eggert

2N/A

2N/Adnl This override of an autoconf macro can be removed when autoconf 2.60 or

2N/Adnl newer can be assumed everywhere.

2N/A

2N/Am4_if(m4_version_compare(m4_defn([m4_PACKAGE_VERSION]),[2.60]),[-1],[

2N/AAC_DEFUN([AC_FUNC_MBRTOWC],

2N/A[

2N/A dnl Same as AC_FUNC_MBRTOWC in autoconf-2.60.

2N/A AC_CACHE_CHECK([whether mbrtowc and mbstate_t are properly declared],

2N/A gl_cv_func_mbrtowc,

2N/A [AC_LINK_IFELSE(

2N/A [AC_LANG_PROGRAM(

2N/A [[#include <wchar.h>]],

2N/A [[wchar_t wc;

2N/A char const s[] = "";

2N/A size_t n = 1;

2N/A mbstate_t state;

2N/A return ! (sizeof state && (mbrtowc) (&wc, s, n, &state));]])],

2N/A gl_cv_func_mbrtowc=yes,

2N/A gl_cv_func_mbrtowc=no)])

2N/A if test $gl_cv_func_mbrtowc = yes; then

2N/A AC_DEFINE([HAVE_MBRTOWC], [1],

2N/A [Define to 1 if mbrtowc and mbstate_t are properly declared.])

2N/A fi

2N/A])

2N/A])