wctype/wctype.c

   1 /* Copyright (C) 1996-2017 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <drepper@gnu.org>, 1996.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library 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    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <endian.h>
  20 #include <string.h>
  21 #include <wctype.h>
  22 #include <locale/localeinfo.h>
  23
  24 wctype_t
  25 __wctype (const char *property)
  26 {
  27   const char *names;
  28   unsigned int result;
  29   size_t proplen = strlen (property);
  30   size_t i;
  31
  32   names = _NL_CURRENT (LC_CTYPE, _NL_CTYPE_CLASS_NAMES);
  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 = _NL_CURRENT_WORD (LC_CTYPE, _NL_CTYPE_CLASS_OFFSET) + result;
  46   return (wctype_t) _NL_CURRENT_DATA (LC_CTYPE)->values[i].string;
  47 }
  48 weak_alias (__wctype, wctype)