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/* Determine the number of screen columns needed for a string.
Copyright (C) 2000 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 PROTOTYPES || defined __STDC__
# define PARAMS(Args) Args
# else
# define PARAMS(Args) ()
# endif
#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
/* 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));
/* 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));
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