/* Display width functions.
Copyright (C) 2001-2002, 2005 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU Library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
USA. */
#ifndef _UNIWIDTH_H
#define _UNIWIDTH_H
#include "unitypes.h"
/* Get size_t. */
#include <stddef.h>
#ifdef __cplusplus
extern "C" {
#endif
/* Display width. */
/* These functions are locale dependent. The encoding argument identifies
the encoding (e.g. "ISO-8859-2" for Polish). */
/* Return the encoding of the current locale. */
extern const char *
locale_charset (void);
/* Determine number of column positions required for UC. */
extern int
uc_width (ucs4_t uc, const char *encoding);
/* Determine number of column positions required for first N units
(or fewer if S ends before this) in S. */
extern int
u8_width (const uint8_t *s, size_t n, const char *encoding);
extern int
u16_width (const uint16_t *s, size_t n, const char *encoding);
extern int
u32_width (const uint32_t *s, size_t n, const char *encoding);
/* Determine number of column positions required for S. */
extern int
u8_strwidth (const uint8_t *s, const char *encoding);
extern int
u16_strwidth (const uint16_t *s, const char *encoding);
extern int
u32_strwidth (const uint32_t *s, const char *encoding);
#ifdef __cplusplus
}
#endif
#endif /* _UNIWIDTH_H */
