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