1/* Display width functions. 2 Copyright (C) 2001-2002, 2005, 2007 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 General Public License as published 6 by the Free Software Foundation; either version 3 of the License, or 7 (at your option) 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 Lesser 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, see <http://www.gnu.org/licenses/>. */ 16 17#ifndef _UNIWIDTH_H 18#define _UNIWIDTH_H 19 20#include "unitypes.h" 21 22/* Get size_t. */ 23#include <stddef.h> 24 25/* Get locale_charset() declaration. */ 26#include "localcharset.h" 27 28#ifdef __cplusplus 29extern "C" { 30#endif 31 32 33/* Display width. */ 34 35/* These functions are locale dependent. The encoding argument identifies 36 the encoding (e.g. "ISO-8859-2" for Polish). */ 37 38/* Determine number of column positions required for UC. */ 39extern int 40 uc_width (ucs4_t uc, const char *encoding); 41 42/* Determine number of column positions required for first N units 43 (or fewer if S ends before this) in S. */ 44extern int 45 u8_width (const uint8_t *s, size_t n, const char *encoding); 46extern int 47 u16_width (const uint16_t *s, size_t n, const char *encoding); 48extern int 49 u32_width (const uint32_t *s, size_t n, const char *encoding); 50 51/* Determine number of column positions required for S. */ 52extern int 53 u8_strwidth (const uint8_t *s, const char *encoding); 54extern int 55 u16_strwidth (const uint16_t *s, const char *encoding); 56extern int 57 u32_strwidth (const uint32_t *s, const char *encoding); 58 59 60#ifdef __cplusplus 61} 62#endif 63 64#endif /* _UNIWIDTH_H */ 65