1/* Display width functions. 2 Copyright (C) 2001-2002, 2005 Free Software Foundation, Inc. 3 4 This program is free software; you can redistribute it and/or modify it 5 under the terms of the GNU Library General Public License as published 6 by 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 GNU 12 Library General Public License for more details. 13 14 You should have received a copy of the GNU Library General Public 15 License along with this program; if not, write to the Free Software 16 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 17 USA. */ 18 19#ifndef _UNIWIDTH_H 20#define _UNIWIDTH_H 21 22#include "unitypes.h" 23 24/* Get size_t. */ 25#include <stddef.h> 26 27#ifdef __cplusplus 28extern "C" { 29#endif 30 31 32/* Display width. */ 33 34/* These functions are locale dependent. The encoding argument identifies 35 the encoding (e.g. "ISO-8859-2" for Polish). */ 36 37/* Return the encoding of the current locale. */ 38extern const char * 39 locale_charset (void); 40 41/* Determine number of column positions required for UC. */ 42extern int 43 uc_width (ucs4_t uc, const char *encoding); 44 45/* Determine number of column positions required for first N units 46 (or fewer if S ends before this) in S. */ 47extern int 48 u8_width (const uint8_t *s, size_t n, const char *encoding); 49extern int 50 u16_width (const uint16_t *s, size_t n, const char *encoding); 51extern int 52 u32_width (const uint32_t *s, size_t n, const char *encoding); 53 54/* Determine number of column positions required for S. */ 55extern int 56 u8_strwidth (const uint8_t *s, const char *encoding); 57extern int 58 u16_strwidth (const uint16_t *s, const char *encoding); 59extern int 60 u32_strwidth (const uint32_t *s, const char *encoding); 61 62 63#ifdef __cplusplus 64} 65#endif 66 67#endif /* _UNIWIDTH_H */ 68