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thodg/libiconv/srclib/uniwidth.h

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  • Author : Bruno Haible
    Date : 2005-05-19 17:14:19
    Hash : 45bd190c
    Message : Update FSF postal address.

  • srclib/uniwidth.h
  • /* 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 */