wctype/wctrans.c

   1 /* Copyright (C) 1996-2023 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library 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 Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <https://www.gnu.org/licenses/>.  */
  17
  18 #include <inttypes.h>
  19 #include <string.h>
  20 #include <wctype.h>
  21 #include "../locale/localeinfo.h"
  22
  23 wctrans_t
  24 __wctrans (const char *property)
  25 {
  26   const char *names;
  27   size_t cnt;
  28   size_t i;
  29
  30   names = _NL_CURRENT (LC_CTYPE, _NL_CTYPE_MAP_NAMES);
  31   cnt = 0;
  32   while (names[0] != '\0')
  33     {
  34       if (strcmp (property, names) == 0)
  35         break;
  36
  37       names = strchr (names, '\0') + 1;
  38       ++cnt;
  39     }
  40
  41   if (names[0] == '\0')
  42     return 0;
  43
  44   i = _NL_CURRENT_WORD (LC_CTYPE, _NL_CTYPE_MAP_OFFSET) + cnt;
  45   return (wctrans_t) _NL_CURRENT_DATA (LC_CTYPE)->values[i].string;
  46 }
  47 weak_alias (__wctrans, wctrans)