locale/lc-ctype.c

   1 /* Define current locale data for LC_CTYPE category.
   2    Copyright (C) 1995-1999, 2000, 2002 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   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, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #include "localeinfo.h"
  21 #include <ctype.h>
  22 #include <endian.h>
  23 #include <stdint.h>
  24
  25 _NL_CURRENT_DEFINE (LC_CTYPE);
  26
  27 /* We are called after loading LC_CTYPE data to load it into
  28    the variables used by the ctype.h macros.
  29
  30    There are three arrays of short ints which need to be indexable
  31    from -128 to 255 inclusive.  Stored in the locale data file are
  32    a copy of each for each byte order.  */
  33
  34 void
  35 _nl_postload_ctype (void)
  36 {
  37 #define paste(a,b) paste1(a,b)
  38 #define paste1(a,b) a##b
  39
  40 #define current(type,x,offset) \
  41   ((const type *) _NL_CURRENT (LC_CTYPE, paste(_NL_CTYPE_,x)) + offset)
  42
  43   extern const uint32_t *__ctype32_b;
  44   extern const uint32_t *__ctype32_toupper;
  45   extern const uint32_t *__ctype32_tolower;
  46   extern const char *__ctype32_wctype[12] attribute_hidden;
  47   extern const char *__ctype32_wctrans[2] attribute_hidden;
  48   extern const char *__ctype32_width attribute_hidden;
  49
  50   size_t offset, cnt;
  51
  52   __ctype_b = current (uint16_t, CLASS, 128);
  53   __ctype_toupper = current (uint32_t, TOUPPER, 128);
  54   __ctype_tolower = current (uint32_t, TOLOWER, 128);
  55   __ctype32_b = current (uint32_t, CLASS32, 0);
  56   __ctype32_toupper = current (uint32_t, TOUPPER32, 0);
  57   __ctype32_tolower = current (uint32_t, TOLOWER32, 0);
  58
  59   offset = _NL_CURRENT_WORD (LC_CTYPE, _NL_CTYPE_CLASS_OFFSET);
  60   for (cnt = 0; cnt < 12; cnt++)
  61     __ctype32_wctype[cnt] = _nl_current_LC_CTYPE->values[offset + cnt].string;
  62
  63   offset = _NL_CURRENT_WORD (LC_CTYPE, _NL_CTYPE_MAP_OFFSET);
  64   for (cnt = 0; cnt < 2; cnt++)
  65     __ctype32_wctrans[cnt] = _nl_current_LC_CTYPE->values[offset + cnt].string;
  66
  67   __ctype32_width = current (char, WIDTH, 0);
  68 }