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46 lines
1.8 KiB
C
46 lines
1.8 KiB
C
/* Determine the number of screen columns needed for a string.
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Copyright (C) 2000-2001 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software Foundation,
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Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include <stddef.h>
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#ifndef PARAMS
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# if __STDC__ || defined __GNUC__ || defined __SUNPRO_C || defined __cplusplus || __PROTOTYPES
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# define PARAMS(Args) Args
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# else
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# define PARAMS(Args) ()
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# endif
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#endif
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/* Optional flags to influence mbswidth/mbsnwidth behavior. */
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/* If this bit is set, return -1 upon finding an invalid or incomplete
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character. Otherwise, assume invalid characters have width 1. */
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#define MBSW_REJECT_INVALID 1
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/* If this bit is set, return -1 upon finding a non-printable character.
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Otherwise, assume unprintable characters have width 0 if they are
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control characters and 1 otherwise. */
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#define MBSW_REJECT_UNPRINTABLE 2
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/* Returns the number of screen columns needed for STRING. */
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#define mbswidth gnu_mbswidth /* avoid clash with UnixWare 7.1.1 function */
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extern int mbswidth PARAMS ((const char *string, int flags));
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/* Returns the number of screen columns needed for the NBYTES bytes
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starting at BUF. */
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extern int mbsnwidth PARAMS ((const char *buf, size_t nbytes, int flags));
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