1 /* Determine the number of screen columns needed for a string.
2 Copyright (C) 2000-2002 Free Software Foundation, Inc.
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)
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.
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. */
20 /* Optional flags to influence mbswidth/mbsnwidth behavior. */
22 /* If this bit is set, return -1 upon finding an invalid or incomplete
23 character. Otherwise, assume invalid characters have width 1. */
24 #define MBSW_REJECT_INVALID 1
26 /* If this bit is set, return -1 upon finding a non-printable character.
27 Otherwise, assume unprintable characters have width 0 if they are
28 control characters and 1 otherwise. */
29 #define MBSW_REJECT_UNPRINTABLE 2
31 /* Returns the number of screen columns needed for STRING. */
32 #define mbswidth gnu_mbswidth /* avoid clash with UnixWare 7.1.1 function */
33 extern int mbswidth (const char *string, int flags);
35 /* Returns the number of screen columns needed for the NBYTES bytes
37 extern int mbsnwidth (const char *buf, size_t nbytes, int flags);
40 extern int mbsnbytes (const char *string, size_t nbytes, int maxwidth, int flags);