release/src/router/libiconv/srclib/uniwidth.in.h

   1 /* Display width functions.
   2    Copyright (C) 2001-2002, 2005, 2007, 2009-2011 Free Software Foundation,
   3    Inc.
   4
   5    This program is free software: you can redistribute it and/or modify it
   6    under the terms of the GNU General Public License as published
   7    by the Free Software Foundation; either version 3 of the License, or
   8    (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  17
  18 #ifndef _UNIWIDTH_H
  19 #define _UNIWIDTH_H
  20
  21 #include "unitypes.h"
  22
  23 /* Get size_t.  */
  24 #include <stddef.h>
  25
  26 /* Get locale_charset() declaration.  */
  27 #include "localcharset.h"
  28
  29 #ifdef __cplusplus
  30 extern "C" {
  31 #endif
  32
  33
  34 /* Display width.  */
  35
  36 /* These functions are locale dependent.  The encoding argument identifies
  37    the encoding (e.g. "ISO-8859-2" for Polish).  */
  38
  39 /* Determine number of column positions required for UC.  */
  40 extern int
  41        uc_width (ucs4_t uc, const char *encoding);
  42
  43 /* Determine number of column positions required for first N units
  44    (or fewer if S ends before this) in S.  */
  45 extern int
  46        u8_width (const uint8_t *s, size_t n, const char *encoding);
  47 extern int
  48        u16_width (const uint16_t *s, size_t n, const char *encoding);
  49 extern int
  50        u32_width (const uint32_t *s, size_t n, const char *encoding);
  51
  52 /* Determine number of column positions required for S.  */
  53 extern int
  54        u8_strwidth (const uint8_t *s, const char *encoding);
  55 extern int
  56        u16_strwidth (const uint16_t *s, const char *encoding);
  57 extern int
  58        u32_strwidth (const uint32_t *s, const char *encoding);
  59
  60
  61 #ifdef __cplusplus
  62 }
  63 #endif
  64
  65 #endif /* _UNIWIDTH_H */