| # mbsrtowcs.m4 serial 14 |
| dnl Copyright (C) 2008-2021 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_MBSRTOWCS], |
| [ |
| AC_REQUIRE([gl_WCHAR_H_DEFAULTS]) |
| |
| AC_REQUIRE([AC_TYPE_MBSTATE_T]) |
| gl_MBSTATE_T_BROKEN |
| |
| AC_CHECK_FUNCS_ONCE([mbsrtowcs]) |
| if test $ac_cv_func_mbsrtowcs = no; then |
| HAVE_MBSRTOWCS=0 |
| AC_CHECK_DECLS([mbsrtowcs],,, [[ |
| #include <wchar.h> |
| ]]) |
| if test $ac_cv_have_decl_mbsrtowcs = yes; then |
| dnl On Minix 3.1.8, the system's <wchar.h> declares mbsrtowcs() although |
| dnl it does not have the function. Avoid a collision with gnulib's |
| dnl replacement. |
| REPLACE_MBSRTOWCS=1 |
| fi |
| else |
| if test $REPLACE_MBSTATE_T = 1; then |
| REPLACE_MBSRTOWCS=1 |
| else |
| gl_MBSRTOWCS_WORKS |
| case "$gl_cv_func_mbsrtowcs_works" in |
| *yes) ;; |
| *) REPLACE_MBSRTOWCS=1 ;; |
| esac |
| fi |
| fi |
| ]) |
| |
| dnl Test whether mbsrtowcs works. |
| dnl Result is gl_cv_func_mbsrtowcs_works. |
| |
| AC_DEFUN([gl_MBSRTOWCS_WORKS], |
| [ |
| AC_REQUIRE([AC_PROG_CC]) |
| AC_REQUIRE([gt_LOCALE_FR]) |
| AC_REQUIRE([gt_LOCALE_FR_UTF8]) |
| AC_REQUIRE([gt_LOCALE_JA]) |
| AC_REQUIRE([gt_LOCALE_ZH_CN]) |
| AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles |
| AC_CACHE_CHECK([whether mbsrtowcs works], |
| [gl_cv_func_mbsrtowcs_works], |
| [ |
| 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, mingw. |
| hpux* | solaris* | mingw*) gl_cv_func_mbsrtowcs_works="guessing no" ;; |
| # Guess yes otherwise. |
| *) gl_cv_func_mbsrtowcs_works="guessing yes" ;; |
| esac |
| changequote([,])dnl |
| if test $LOCALE_FR != none || test $LOCALE_FR_UTF8 != none || test $LOCALE_JA != none || test $LOCALE_ZH_CN != none; then |
| AC_RUN_IFELSE( |
| [AC_LANG_SOURCE([[ |
| #include <locale.h> |
| #include <string.h> |
| #include <wchar.h> |
| int main () |
| { |
| int result = 0; |
| /* Test whether the function supports a NULL destination argument. |
| This fails on native Windows. */ |
| if (setlocale (LC_ALL, "$LOCALE_FR") != NULL) |
| { |
| const char input[] = "\337er"; |
| const char *src = input; |
| mbstate_t state; |
| |
| memset (&state, '\0', sizeof (mbstate_t)); |
| if (mbsrtowcs (NULL, &src, 1, &state) != 3 |
| || src != input) |
| result |= 1; |
| } |
| /* Test whether the function works when started with a conversion state |
| in non-initial state. This fails on HP-UX 11.11 and Solaris 10. */ |
| if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL) |
| { |
| const char input[] = "B\303\274\303\237er"; |
| mbstate_t state; |
| |
| memset (&state, '\0', sizeof (mbstate_t)); |
| if (mbrtowc (NULL, input + 1, 1, &state) == (size_t)(-2)) |
| if (!mbsinit (&state)) |
| { |
| const char *src = input + 2; |
| if (mbsrtowcs (NULL, &src, 10, &state) != 4) |
| result |= 2; |
| } |
| } |
| if (setlocale (LC_ALL, "$LOCALE_JA") != NULL) |
| { |
| const char input[] = "<\306\374\313\334\270\354>"; |
| mbstate_t state; |
| |
| memset (&state, '\0', sizeof (mbstate_t)); |
| if (mbrtowc (NULL, input + 3, 1, &state) == (size_t)(-2)) |
| if (!mbsinit (&state)) |
| { |
| const char *src = input + 4; |
| if (mbsrtowcs (NULL, &src, 10, &state) != 3) |
| result |= 4; |
| } |
| } |
| if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL) |
| { |
| const char input[] = "B\250\271\201\060\211\070er"; |
| mbstate_t state; |
| |
| memset (&state, '\0', sizeof (mbstate_t)); |
| if (mbrtowc (NULL, input + 1, 1, &state) == (size_t)(-2)) |
| if (!mbsinit (&state)) |
| { |
| const char *src = input + 2; |
| if (mbsrtowcs (NULL, &src, 10, &state) != 4) |
| result |= 8; |
| } |
| } |
| return result; |
| }]])], |
| [gl_cv_func_mbsrtowcs_works=yes], |
| [gl_cv_func_mbsrtowcs_works=no], |
| [:]) |
| fi |
| ]) |
| ]) |
| |
| # Prerequisites of lib/mbsrtowcs.c. |
| AC_DEFUN([gl_PREREQ_MBSRTOWCS], [ |
| : |
| ]) |