wctype/wcfuncs.c

   1 /* Copyright (C) 1996-2022 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 <ctype.h>
  19 #include <wctype.h>
  20 #include <locale/localeinfo.h>
  21
  22 #include "wchar-lookup.h"
  23
  24 /* Provide real-function versions of all the wctype macros.  */
  25
  26 #define func(name, type)                                                      \
  27   extern int __isw##name (wint_t __wc);                                       \
  28   int                                                                         \
  29   __isw##name (wint_t wc)                                                     \
  30   {                                                                           \
  31     if (isascii (wc))                                                         \
  32       return is##name ((int) wc);                                             \
  33     size_t i = _NL_CURRENT_WORD (LC_CTYPE, _NL_CTYPE_CLASS_OFFSET) + type;    \
  34     const char *desc = _NL_CURRENT (LC_CTYPE, i);                             \
  35     return wctype_table_lookup (desc, wc);                                    \
  36   }                                                                           \
  37   weak_alias (__isw##name, isw##name)
  38
  39 #undef iswalnum
  40 func (alnum, __ISwalnum)
  41 libc_hidden_def (__iswalnum)
  42 libc_hidden_weak (iswalnum)
  43 #undef iswalpha
  44 func (alpha, __ISwalpha)
  45 libc_hidden_weak (iswalpha)
  46 #undef iswblank
  47 func (blank, __ISwblank)
  48 #undef iswcntrl
  49 func (cntrl, __ISwcntrl)
  50 #undef iswdigit
  51 func (digit, __ISwdigit)
  52 libc_hidden_weak (iswdigit)
  53 #undef iswlower
  54 func (lower, __ISwlower)
  55 libc_hidden_def (__iswlower)
  56 libc_hidden_weak (iswlower)
  57 #undef iswgraph
  58 func (graph, __ISwgraph)
  59 #undef iswprint
  60 func (print, __ISwprint)
  61 #undef iswpunct
  62 func (punct, __ISwpunct)
  63 #undef iswspace
  64 func (space, __ISwspace)
  65 libc_hidden_weak (iswspace)
  66 #undef iswupper
  67 func (upper, __ISwupper)
  68 #undef iswxdigit
  69 func (xdigit, __ISwxdigit)
  70 libc_hidden_weak (iswxdigit)
  71
  72 #undef towlower
  73 wint_t
  74 __towlower (wint_t wc)
  75 {
  76   size_t i = _NL_CURRENT_WORD (LC_CTYPE, _NL_CTYPE_MAP_OFFSET) + __TOW_tolower;
  77   const char *desc = _NL_CURRENT (LC_CTYPE, i);
  78   return wctrans_table_lookup (desc, wc);
  79 }
  80 libc_hidden_def (__towlower)
  81 weak_alias (__towlower, towlower)
  82 libc_hidden_weak (towlower)
  83
  84 #undef towupper
  85 wint_t
  86 __towupper (wint_t wc)
  87 {
  88   size_t i = _NL_CURRENT_WORD (LC_CTYPE, _NL_CTYPE_MAP_OFFSET) + __TOW_toupper;
  89   const char *desc = _NL_CURRENT (LC_CTYPE, i);
  90   return wctrans_table_lookup (desc, wc);
  91 }
  92 libc_hidden_def (__towupper)
  93 weak_alias (__towupper, towupper)
  94 libc_hidden_weak (towupper)