| # mbrtowc.m4 serial 25 |
| dnl Copyright (C) 2001-2002, 2004-2005, 2008-2012 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 |
| AC_CHECK_DECLS([mbrtowc],,, [[ |
| /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before |
| <wchar.h>. |
| BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be |
| included before <wchar.h>. */ |
| #include <stddef.h> |
| #include <stdio.h> |
| #include <time.h> |
| #include <wchar.h> |
| ]]) |
| if test $ac_cv_have_decl_mbrtowc = yes; then |
| dnl On Minix 3.1.8, the system's <wchar.h> declares mbrtowc() although |
| dnl it does not have the function. Avoid a collision with gnulib's |
| dnl replacement. |
| REPLACE_MBRTOWC=1 |
| fi |
| else |
| if test $REPLACE_MBSTATE_T = 1; then |
| REPLACE_MBRTOWC=1 |
| else |
| gl_MBRTOWC_NULL_ARG1 |
| gl_MBRTOWC_NULL_ARG2 |
| gl_MBRTOWC_RETVAL |
| gl_MBRTOWC_NUL_RETVAL |
| case "$gl_cv_func_mbrtowc_null_arg1" in |
| *yes) ;; |
| *) AC_DEFINE([MBRTOWC_NULL_ARG1_BUG], [1], |
| [Define if the mbrtowc function has the NULL pwc argument bug.]) |
| REPLACE_MBRTOWC=1 |
| ;; |
| esac |
| case "$gl_cv_func_mbrtowc_null_arg2" in |
| *yes) ;; |
| *) AC_DEFINE([MBRTOWC_NULL_ARG2_BUG], [1], |
| [Define if the mbrtowc function has the NULL string argument bug.]) |
| REPLACE_MBRTOWC=1 |
| ;; |
| esac |
| case "$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 |
| ]) |
| |
| 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 "$gl_cv_func_mbrtowc_sanitycheck" in |
| *yes) ;; |
| *) REPLACE_MBSTATE_T=1 ;; |
| esac |
| else |
| REPLACE_MBSTATE_T=1 |
| fi |
| ]) |
| |
| dnl Test whether mbrtowc puts the state into non-initial state when parsing an |
| dnl incomplete multibyte character. |
| dnl Result is gl_cv_func_mbrtowc_incomplete_state. |
| |
| AC_DEFUN([gl_MBRTOWC_INCOMPLETE_STATE], |
| [ |
| AC_REQUIRE([AC_PROG_CC]) |
| AC_REQUIRE([gt_LOCALE_JA]) |
| AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles |
| AC_CACHE_CHECK([whether mbrtowc handles incomplete characters], |
| [gl_cv_func_mbrtowc_incomplete_state], |
| [ |
| dnl Initial guess, used when cross-compiling or when no suitable locale |
| dnl is present. |
| changequote(,)dnl |
| case "$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 $LOCALE_JA != none; then |
| AC_RUN_IFELSE( |
| [AC_LANG_SOURCE([[ |
| #include <locale.h> |
| #include <string.h> |
| /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before |
| <wchar.h>. |
| BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be |
| included before <wchar.h>. */ |
| #include <stddef.h> |
| #include <stdio.h> |
| #include <time.h> |
| #include <wchar.h> |
| int main () |
| { |
| if (setlocale (LC_ALL, "$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 $LOCALE_ZH_CN != none; then |
| AC_RUN_IFELSE( |
| [AC_LANG_SOURCE([[ |
| #include <locale.h> |
| #include <stdlib.h> |
| #include <string.h> |
| /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before |
| <wchar.h>. |
| BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be |
| included before <wchar.h>. */ |
| #include <stddef.h> |
| #include <stdio.h> |
| #include <time.h> |
| #include <wchar.h> |
| int main () |
| { |
| /* This fails on Solaris 8: |
| mbrtowc returns 2, and sets wc to 0x00F0. |
| mbtowc returns 4 (correct) and sets wc to 0x5EDC. */ |
| if (setlocale (LC_ALL, "$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 pwc argument correctly. |
| dnl Result is gl_cv_func_mbrtowc_null_arg1. |
| |
| AC_DEFUN([gl_MBRTOWC_NULL_ARG1], |
| [ |
| 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 pwc argument], |
| [gl_cv_func_mbrtowc_null_arg1], |
| [ |
| 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. |
| solaris*) gl_cv_func_mbrtowc_null_arg1="guessing no" ;; |
| # Guess yes otherwise. |
| *) gl_cv_func_mbrtowc_null_arg1="guessing yes" ;; |
| esac |
| changequote([,])dnl |
| if test $LOCALE_FR_UTF8 != none; then |
| AC_RUN_IFELSE( |
| [AC_LANG_SOURCE([[ |
| #include <locale.h> |
| #include <stdlib.h> |
| #include <string.h> |
| /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before |
| <wchar.h>. |
| BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be |
| included before <wchar.h>. */ |
| #include <stddef.h> |
| #include <stdio.h> |
| #include <time.h> |
| #include <wchar.h> |
| int main () |
| { |
| int result = 0; |
| |
| if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL) |
| { |
| char input[] = "\303\237er"; |
| mbstate_t state; |
| wchar_t wc; |
| size_t ret; |
| |
| memset (&state, '\0', sizeof (mbstate_t)); |
| wc = (wchar_t) 0xBADFACE; |
| ret = mbrtowc (&wc, input, 5, &state); |
| if (ret != 2) |
| result |= 1; |
| if (!mbsinit (&state)) |
| result |= 2; |
| |
| memset (&state, '\0', sizeof (mbstate_t)); |
| ret = mbrtowc (NULL, input, 5, &state); |
| if (ret != 2) /* Solaris 7 fails here: ret is -1. */ |
| result |= 4; |
| if (!mbsinit (&state)) |
| result |= 8; |
| } |
| return result; |
| }]])], |
| [gl_cv_func_mbrtowc_null_arg1=yes], |
| [gl_cv_func_mbrtowc_null_arg1=no], |
| [:]) |
| fi |
| ]) |
| ]) |
| |
| dnl Test whether mbrtowc supports a NULL string argument correctly. |
| dnl Result is gl_cv_func_mbrtowc_null_arg2. |
| |
| AC_DEFUN([gl_MBRTOWC_NULL_ARG2], |
| [ |
| 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_arg2], |
| [ |
| 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_arg2="guessing no" ;; |
| # Guess yes otherwise. |
| *) gl_cv_func_mbrtowc_null_arg2="guessing yes" ;; |
| esac |
| changequote([,])dnl |
| if test $LOCALE_FR_UTF8 != none; then |
| AC_RUN_IFELSE( |
| [AC_LANG_SOURCE([[ |
| #include <locale.h> |
| #include <string.h> |
| /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before |
| <wchar.h>. |
| BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be |
| included before <wchar.h>. */ |
| #include <stddef.h> |
| #include <stdio.h> |
| #include <time.h> |
| #include <wchar.h> |
| int main () |
| { |
| if (setlocale (LC_ALL, "$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_arg2=yes], |
| [gl_cv_func_mbrtowc_null_arg2=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]) |
| 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, Solaris, native Windows. |
| hpux* | solaris* | mingw*) 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 $LOCALE_JA != none \ |
| || { case "$host_os" in mingw*) true;; *) false;; esac; }; then |
| AC_RUN_IFELSE( |
| [AC_LANG_SOURCE([[ |
| #include <locale.h> |
| #include <string.h> |
| /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before |
| <wchar.h>. |
| BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be |
| included before <wchar.h>. */ |
| #include <stddef.h> |
| #include <stdio.h> |
| #include <time.h> |
| #include <wchar.h> |
| int main () |
| { |
| int result = 0; |
| int found_some_locale = 0; |
| /* This fails on Solaris. */ |
| if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL) |
| { |
| char input[] = "B\303\274\303\237er"; /* "Büßer" */ |
| mbstate_t state; |
| wchar_t wc; |
| |
| memset (&state, '\0', sizeof (mbstate_t)); |
| if (mbrtowc (&wc, input + 1, 1, &state) == (size_t)(-2)) |
| { |
| input[1] = '\0'; |
| if (mbrtowc (&wc, input + 2, 5, &state) != 1) |
| result |= 1; |
| } |
| found_some_locale = 1; |
| } |
| /* This fails on HP-UX 11.11. */ |
| if (setlocale (LC_ALL, "$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) |
| result |= 2; |
| } |
| found_some_locale = 1; |
| } |
| /* This fails on native Windows. */ |
| if (setlocale (LC_ALL, "Japanese_Japan.932") != NULL) |
| { |
| char input[] = "<\223\372\226\173\214\352>"; /* "<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 |= 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 $LOCALE_ZH_CN != none; then |
| AC_RUN_IFELSE( |
| [AC_LANG_SOURCE([[ |
| #include <locale.h> |
| #include <string.h> |
| /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before |
| <wchar.h>. |
| BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be |
| included before <wchar.h>. */ |
| #include <stddef.h> |
| #include <stdio.h> |
| #include <time.h> |
| #include <wchar.h> |
| int main () |
| { |
| /* This fails on Solaris 8 and 9. */ |
| if (setlocale (LC_ALL, "$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 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( |
| [[/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be |
| included before <wchar.h>. |
| BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> |
| must be included before <wchar.h>. */ |
| #include <stddef.h> |
| #include <stdio.h> |
| #include <time.h> |
| #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 |
| ]) |
