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 <endian.h>
      19  #include <string.h>
      20  #include <wctype.h>
      21  #include <locale/localeinfo.h>
      22  
      23  wctype_t
      24  __wctype (const char *property)
      25  {
      26    const char *names;
      27    unsigned int result;
      28    size_t proplen = strlen (property);
      29    size_t i;
      30  
      31    names = _NL_CURRENT (LC_CTYPE, _NL_CTYPE_CLASS_NAMES);
      32    for (result = 0; ; result++)
      33      {
      34        size_t nameslen = strlen (names);
      35  
      36        if (proplen == nameslen && memcmp (property, names, proplen) == 0)
      37  	break;
      38  
      39        names += nameslen + 1;
      40        if (names[0] == '\0')
      41  	return 0;
      42      }
      43  
      44    i = _NL_CURRENT_WORD (LC_CTYPE, _NL_CTYPE_CLASS_OFFSET) + result;
      45    return (wctype_t) _NL_CURRENT_DATA (LC_CTYPE)->values[i].string;
      46  }
      47  weak_alias (__wctype, wctype)