/* Determine the number of screen columns needed for a string.
- Copyright (C) 2000 Free Software Foundation, Inc.
+ Copyright (C) 2000-2004, 2007, 2009-2013 Free Software Foundation, Inc.
- This program is free software; you can redistribute it and/or modify
+ This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software Foundation,
- Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
-
-#ifndef PARAMS
-# if defined PROTOTYPES || defined __STDC__
-# define PARAMS(Args) Args
-# else
-# define PARAMS(Args) ()
-# endif
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+#include <stddef.h>
+
+/* Avoid a clash of our mbswidth() with a function of the same name defined
+ in UnixWare 7.1.1 <wchar.h>. We need this #include before the #define
+ below.
+ However, we don't want to #include <wchar.h> on all platforms because
+ - Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
+ <wchar.h>.
+ - BSD/OS 4.1 has a bug: <stdio.h> and <time.h> must be included before
+ <wchar.h>. */
+#if HAVE_DECL_MBSWIDTH_IN_WCHAR_H
+# include <wchar.h>
#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
/* Optional flags to influence mbswidth/mbsnwidth behavior. */
-/* Assume invalid characters have width 0. If this is zero, the
- functions return -1 if they find an invalid or incomplete character. */
-#define MBSW_ACCEPT_INVALID 1
+/* If this bit is set, return -1 upon finding an invalid or incomplete
+ character. Otherwise, assume invalid characters have width 1. */
+#define MBSW_REJECT_INVALID 1
+
+/* If this bit is set, return -1 upon finding a non-printable character.
+ Otherwise, assume unprintable characters have width 0 if they are
+ control characters and 1 otherwise. */
+#define MBSW_REJECT_UNPRINTABLE 2
-/* Assume unprintable characters have width 1. If this is zero, the
- functions return -1 if they find a non-printable character. */
-#define MBSW_ACCEPT_UNPRINTABLE 2
/* Returns the number of screen columns needed for STRING. */
-extern int mbswidth PARAMS ((const char *string, int flags));
+#define mbswidth gnu_mbswidth /* avoid clash with UnixWare 7.1.1 function */
+extern int mbswidth (const char *string, int flags);
/* Returns the number of screen columns needed for the NBYTES bytes
starting at BUF. */
-extern int mbsnwidth PARAMS ((const char *buf, size_t nbytes, int flags));
+extern int mbsnwidth (const char *buf, size_t nbytes, int flags);
+
+
+#ifdef __cplusplus
+}
+#endif