| # mbrtowc.m4 serial 18 |
| dnl Copyright (C) 2001-2002, 2004-2005, 2008-2010 Free Software Foundation, |
| dnl 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 |
| |
| AC_CHECK_FUNCS_ONCE([mbrtowc]) |
| if test $ac_cv_func_mbrtowc = no; then |
| HAVE_MBRTOWC=0 |
| else |
| if test $REPLACE_MBSTATE_T = 1; then |
| REPLACE_MBRTOWC=1 |
| else |
| gl_MBRTOWC_NULL_ARG |
| gl_MBRTOWC_RETVAL |
| gl_MBRTOWC_NUL_RETVAL |
| case "$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 |
| 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. |
| aix* | 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 $LOCALE_JA != none; then |
| AC_RUN_IFELSE( |
| [AC_LANG_SOURCE([[ |
| #include <locale.h> |
| #include <string.h> |
| #include <wchar.h> |
| int main () |
| { |
| if (setlocale (LC_ALL, "$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 $LOCALE_ZH_CN != none; then |
| AC_RUN_IFELSE( |
| [AC_LANG_SOURCE([[ |
| #include <locale.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <wchar.h> |
| int main () |
| { |
| /* This fails on Solaris 8: |
| mbrtowc returns 2, and sets wc to 0x00F0. |
| mbtowc returns 4 (correct) and sets wc to 0x5EDC. */ |
| if (setlocale (LC_ALL, "$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 $LOCALE_FR_UTF8 != none; then |
| AC_RUN_IFELSE( |
| [AC_LANG_SOURCE([[ |
| #include <locale.h> |
| #include <string.h> |
| #include <wchar.h> |
| int main () |
| { |
| if (setlocale (LC_ALL, "$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 $LOCALE_JA != none; then |
| AC_RUN_IFELSE( |
| [AC_LANG_SOURCE([[ |
| #include <locale.h> |
| #include <string.h> |
| #include <wchar.h> |
| int main () |
| { |
| /* This fails on Solaris. */ |
| if (setlocale (LC_ALL, "$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 $LOCALE_ZH_CN != none; then |
| AC_RUN_IFELSE( |
| [AC_LANG_SOURCE([[ |
| #include <locale.h> |
| #include <string.h> |
| #include <wchar.h> |
| int main () |
| { |
| /* This fails on Solaris 8 and 9. */ |
| if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL) |
| { |
| mbstate_t state; |
| wchar_t wc; |
| |
| memset (&state, '\0', sizeof (mbstate_t)); |
| if (mbrtowc (&wc, "", 1, &state) != 0) |
| return 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 |
| ]) |
| ]) |
