-# mbrtowc.m4 serial 9
-dnl Copyright (C) 2001-2002, 2004-2005, 2008 Free Software Foundation, Inc.
+# mbrtowc.m4 serial 25
+dnl Copyright (C) 2001-2002, 2004-2005, 2008-2013 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 override of an autoconf macro can be removed when autoconf 2.60 or
-dnl newer can be assumed everywhere.
+dnl This is an override of an autoconf macro.
-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.
gl_cv_func_mbrtowc,
[AC_LINK_IFELSE(
[AC_LANG_PROGRAM(
- [[#include <wchar.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>]],
[[wchar_t wc;
char const s[] = "";
size_t n = 1;
gl_cv_func_mbrtowc=yes,
gl_cv_func_mbrtowc=no)])
if test $gl_cv_func_mbrtowc = yes; then
- AC_DEFINE([HAVE_MBRTOWC], 1,
+ AC_DEFINE([HAVE_MBRTOWC], [1],
[Define to 1 if mbrtowc and mbstate_t are properly declared.])
fi
])
-])
projects / gnulib.git / blobdiff