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Commit	Line	Data
	1	/* Determine the number of screen columns needed for a string.
	2	Copyright (C) 2000-2003 Free Software Foundation, Inc.
	3
	4	This program is free software; you can redistribute it and/or modify
	5	it under the terms of the GNU General Public License as published by
	6	the Free Software Foundation; either version 2, or (at your option)
	7	any later version.
	8
	9	This program is distributed in the hope that it will be useful,
	10	but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	12	GNU General Public License for more details.
	13
	14	You should have received a copy of the GNU General Public License
	15	along with this program; if not, write to the Free Software Foundation,
	16	Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
	17
	18	#include <stddef.h>
	19
	20	/* Avoid a clash of our mbswidth() with a function of the same name defined
	21	in UnixWare 7.1.1 <wchar.h>. We need this #include before the #define
	22	below. */
	23	#if HAVE_WCHAR_H
	24	# include <wchar.h>
	25	#endif
	26
	27
	28	/* Optional flags to influence mbswidth/mbsnwidth behavior. */
	29
	30	/* If this bit is set, return -1 upon finding an invalid or incomplete
	31	character. Otherwise, assume invalid characters have width 1. */
	32	#define MBSW_REJECT_INVALID 1
	33
	34	/* If this bit is set, return -1 upon finding a non-printable character.
	35	Otherwise, assume unprintable characters have width 0 if they are
	36	control characters and 1 otherwise. */
	37	#define MBSW_REJECT_UNPRINTABLE 2
	38
	39
	40	/* Returns the number of screen columns needed for STRING. */
	41	#define mbswidth gnu_mbswidth /* avoid clash with UnixWare 7.1.1 function */
	42	extern int mbswidth (const char *string, int flags);
	43
	44	/* Returns the number of screen columns needed for the NBYTES bytes
	45	starting at BUF. */
	46	extern int mbsnwidth (const char *buf, size_t nbytes, int flags);