wctype/wctrans.c

   1 /* Copyright (C) 1996, 1997, 1999, 2000 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 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 Library General Public License as
   7    published by the Free Software Foundation; either version 2 of the
   8    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    Library General Public License for more details.
  14
  15    You should have received a copy of the GNU Library General Public
  16    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  17    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18    Boston, MA 02111-1307, USA.  */
  19
  20 #include <ctype.h>
  21 #include <inttypes.h>
  22 #include <string.h>
  23 #include <wctype.h>
  24 #include "../locale/localeinfo.h"
  25
  26 /* These are not exported.  */
  27 extern const uint32_t *__ctype32_toupper;
  28 extern const uint32_t *__ctype32_tolower;
  29
  30 wctrans_t
  31 wctrans (const char *property)
  32 {
  33   const char *names;
  34   size_t cnt;
  35   int32_t *result;
  36
  37   names = _NL_CURRENT (LC_CTYPE, _NL_CTYPE_MAP_NAMES);
  38   cnt = 0;
  39   while (names[0] != '\0')
  40     {
  41       if (strcmp (property, names) == 0)
  42         break;
  43
  44       names = strchr (names, '\0') + 1;
  45       ++cnt;
  46     }
  47
  48   if (names[0] == '\0')
  49     return 0;
  50
  51   if (cnt == 0)
  52     return (wctrans_t) __ctype32_toupper;
  53   else if (cnt == 1)
  54     return (wctrans_t) __ctype32_tolower;
  55
  56   /* We have to search the table.  */
  57   result = (int32_t *) _NL_CURRENT (LC_CTYPE, _NL_NUM_LC_CTYPE + cnt - 2);
  58
  59   return (wctrans_t) result;
  60 }