-# mbrlen.m4 serial 1
+# mbrlen.m4 serial 2
dnl Copyright (C) 2008 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
AC_REQUIRE([AC_TYPE_MBSTATE_T])
+ AC_REQUIRE([gl_FUNC_MBRTOWC])
AC_CHECK_FUNCS_ONCE([mbrlen])
if test $ac_cv_func_mbrlen = no; then
HAVE_MBRLEN=0
+ else
+ dnl Most bugs affecting the system's mbrtowc function also affect the
+ dnl mbrlen function. So override mbrlen whenever mbrtowc is overridden.
+ dnl We could also run the individual tests below; the results would be
+ dnl the same.
+ if test $REPLACE_MBRTOWC = 1; then
+ REPLACE_MBRLEN=1
+ fi
+ fi
+ if test $HAVE_MBRLEN = 0 || test $REPLACE_MBRLEN = 1; then
gl_REPLACE_WCHAR_H
AC_LIBOBJ([mbrlen])
gl_PREREQ_MBRLEN
fi
])
+dnl Test whether mbrlen puts the state into non-initial state when parsing an
+dnl incomplete multibyte character.
+dnl Result is gl_cv_func_mbrlen_incomplete_state.
+
+AC_DEFUN([gl_MBRLEN_INCOMPLETE_STATE],
+[
+ AC_REQUIRE([AC_PROG_CC])
+ AC_REQUIRE([gt_LOCALE_JA])
+ AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+ AC_CACHE_CHECK([whether mbrlen handles incomplete characters],
+ [gl_cv_func_mbrlen_incomplete_state],
+ [
+ dnl Initial guess, used when cross-compiling or when no suitable locale
+ dnl is present.
+changequote(,)dnl
+ case "$host_os" in
+ # Guess no on AIX and OSF/1.
+ osf*) gl_cv_func_mbrlen_incomplete_state="guessing no" ;;
+ # Guess yes otherwise.
+ *) gl_cv_func_mbrlen_incomplete_state="guessing yes" ;;
+ esac
+changequote([,])dnl
+ if test $LOCALE_JA != none; then
+ AC_TRY_RUN([
+#include <locale.h>
+#include <string.h>
+#include <wchar.h>
+int main ()
+{
+ if (setlocale (LC_ALL, "$LOCALE_JA") != NULL)
+ {
+ const char input[] = "B\217\253\344\217\251\316er"; /* "Büßer" */
+ mbstate_t state;
+
+ memset (&state, '\0', sizeof (mbstate_t));
+ if (mbrlen (input + 1, 1, &state) == (size_t)(-2))
+ if (mbsinit (&state))
+ return 1;
+ }
+ return 0;
+}],
+ [gl_cv_func_mbrlen_incomplete_state=yes],
+ [gl_cv_func_mbrlen_incomplete_state=no],
+ [])
+ fi
+ ])
+])
+
+dnl Test whether mbrlen, 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_mbrlen_retval.
+
+AC_DEFUN([gl_MBRLEN_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 mbrlen has a correct return value],
+ [gl_cv_func_mbrlen_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_mbrlen_retval="guessing no" ;;
+ # Guess yes otherwise.
+ *) gl_cv_func_mbrlen_retval="guessing yes" ;;
+ esac
+changequote([,])dnl
+ if test $LOCALE_FR_UTF8 != none || test $LOCALE_JA != none; then
+ AC_TRY_RUN([
+#include <locale.h>
+#include <string.h>
+#include <wchar.h>
+int main ()
+{
+ /* This fails on Solaris. */
+ if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
+ {
+ char input[] = "B\303\274\303\237er"; /* "Büßer" */
+ mbstate_t state;
+
+ memset (&state, '\0', sizeof (mbstate_t));
+ if (mbrlen (input + 1, 1, &state) == (size_t)(-2))
+ {
+ input[1] = '\0';
+ if (mbrlen (input + 2, 5, &state) != 1)
+ return 1;
+ }
+ }
+ /* This fails on HP-UX 11.11. */
+ if (setlocale (LC_ALL, "$LOCALE_JA") != NULL)
+ {
+ char input[] = "B\217\253\344\217\251\316er"; /* "Büßer" */
+ mbstate_t state;
+
+ memset (&state, '\0', sizeof (mbstate_t));
+ if (mbrlen (input + 1, 1, &state) == (size_t)(-2))
+ {
+ input[1] = '\0';
+ if (mbrlen (input + 2, 5, &state) != 2)
+ return 1;
+ }
+ }
+ return 0;
+}],
+ [gl_cv_func_mbrlen_retval=yes],
+ [gl_cv_func_mbrlen_retval=no],
+ [])
+ fi
+ ])
+])
+
+dnl Test whether mbrlen, when parsing a NUL character, correctly returns 0.
+dnl Result is gl_cv_func_mbrlen_nul_retval.
+
+AC_DEFUN([gl_MBRLEN_NUL_RETVAL],
+[
+ AC_REQUIRE([AC_PROG_CC])
+ AC_REQUIRE([gt_LOCALE_ZH_CN])
+ AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+ AC_CACHE_CHECK([whether mbrlen returns 0 when parsing a NUL character],
+ [gl_cv_func_mbrlen_nul_retval],
+ [
+ dnl Initial guess, used when cross-compiling or when no suitable locale
+ dnl is present.
+changequote(,)dnl
+ case "$host_os" in
+ # Guess no on Solaris 9.
+ solaris2.9) gl_cv_func_mbrlen_nul_retval="guessing no" ;;
+ # Guess yes otherwise.
+ *) gl_cv_func_mbrlen_nul_retval="guessing yes" ;;
+ esac
+changequote([,])dnl
+ if test $LOCALE_ZH_CN != none; then
+ AC_TRY_RUN([
+#include <locale.h>
+#include <string.h>
+#include <wchar.h>
+int main ()
+{
+ /* This crashes on Solaris 9 inside __mbrtowc_dense_gb18030. */
+ if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL)
+ {
+ mbstate_t state;
+
+ memset (&state, '\0', sizeof (mbstate_t));
+ if (mbrlen ("", 1, &state) != 0)
+ return 1;
+ }
+ return 0;
+}],
+ [gl_cv_func_mbrlen_nul_retval=yes],
+ [gl_cv_func_mbrlen_nul_retval=no],
+ [])
+ fi
+ ])
+])
+
# Prerequisites of lib/mbrlen.c.
AC_DEFUN([gl_PREREQ_MBRLEN], [
:
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