wcsmbs/wcsmbsload.h

   1 /* Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
   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 #ifndef _WCSMBSLOAD_H
  21 #define _WCSMBSLOAD_H   1
  22
  23 #include <locale.h>
  24 #include <wchar.h>
  25 #include <locale/localeinfo.h>
  26
  27
  28 /* Contains pointers to the used functions in the `gconv' modules.  */
  29 struct gconv_fcts
  30   {
  31     struct __gconv_step *towc;
  32     size_t towc_nsteps;
  33     struct __gconv_step *tomb;
  34     size_t tomb_nsteps;
  35   };
  36
  37 /* Set of currently active conversion functions.  */
  38 extern const struct gconv_fcts __wcsmbs_gconv_fcts_c attribute_hidden;
  39
  40 /* Load conversion functions for the currently selected locale.  */
  41 extern void __wcsmbs_load_conv (struct locale_data *new_category)
  42      internal_function;
  43
  44 /* Clone the current `__wcsmbs_load_conv' value.  */
  45 extern void __wcsmbs_clone_conv (struct gconv_fcts *copy)
  46      internal_function;
  47
  48 /* Find the conversion functions for converting to and from NAME.  */
  49 extern int __wcsmbs_named_conv (struct gconv_fcts *copy, const char *name)
  50      internal_function;
  51
  52 /* Function used for the `private.cleanup' hook.  */
  53 extern void _nl_cleanup_ctype (struct locale_data *)
  54      internal_function attribute_hidden;
  55
  56
  57 #include <iconv/gconv_int.h>
  58
  59
  60 /* Load the function implementation if necessary.  */
  61 extern struct __gconv_step *__wcsmbs_getfct (const char *to, const char *from,
  62                                              size_t *nstepsp)
  63      attribute_hidden;
  64
  65 extern const struct locale_data _nl_C_LC_CTYPE attribute_hidden;
  66
  67 /* Check whether the LC_CTYPE locale changed since the last call.
  68    Update the pointers appropriately.  */
  69 static inline const struct gconv_fcts *
  70 get_gconv_fcts (struct locale_data *data)
  71 {
  72   if (__builtin_expect (data->private.ctype == NULL, 0))
  73     {
  74       if (__builtin_expect (data == &_nl_C_LC_CTYPE, 0))
  75         return &__wcsmbs_gconv_fcts_c;
  76       __wcsmbs_load_conv (data);
  77     }
  78   return data->private.ctype;
  79 }
  80
  81 #endif  /* wcsmbsload.h */