+
−/* Determine the number of screen columns needed for a string.
+
−   Copyright (C) 2000-2004, 2007 Free Software Foundation, Inc.
+
−
+
−   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 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
+
−   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+
−   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, 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.  */
+
−
+
−/* 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
+
−
+
−
+
−/* Returns the number of screen columns needed for STRING.  */
+
−#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 (const char *buf, size_t nbytes, int flags);
+
−
+
−
+
−#ifdef __cplusplus
+
−}
+
−#endif