/* Determine the number of screen columns needed for a string.   Copyright (C) 2000-2001 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 2, 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, write to the Free Software Foundation,   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */#ifndef PARAMS# if defined (__GNUC__) || __STDC__#  define PARAMS(Args) Args# else#  define PARAMS(Args) ()# endif#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 PARAMS ((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));