wcsmbs/wcsmbsload.h

   1 /* Copyright (C) 1998, 1999, 2000, 2001 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 #include <locale.h>
  21 #include <wchar.h>
  22 #include <locale/localeinfo.h>
  23
  24
  25 /* Contains pointers to the used functions in the `gconv' modules.  */
  26 struct gconv_fcts
  27   {
  28     struct __gconv_step *towc;
  29     size_t towc_nsteps;
  30     struct __gconv_step *tomb;
  31     size_t tomb_nsteps;
  32   };
  33
  34 /* Set of currently active conversion functions.  */
  35 extern struct gconv_fcts __wcsmbs_gconv_fcts;
  36
  37
  38 /* Last loaded locale for LC_CTYPE.  */
  39 extern const struct locale_data *__wcsmbs_last_locale;
  40
  41
  42 /* Load conversion functions for the currently selected locale.  */
  43 extern void __wcsmbs_load_conv (const struct locale_data *new_category)
  44      internal_function;
  45
  46 /* Clone the current `__wcsmbs_load_conv' value.  */
  47 extern void __wcsmbs_clone_conv (struct gconv_fcts *copy)
  48      internal_function;
  49
  50 /* Find the conversion functions for converting to and from NAME.  */
  51 extern int __wcsmbs_named_conv (struct gconv_fcts *copy, const char *name)
  52      internal_function;
  53
  54
  55 /* Check whether the LC_CTYPE locale changed since the last call.
  56    Update the pointers appropriately.  */
  57 static inline void
  58 update_conversion_ptrs (void)
  59 {
  60   if (__wcsmbs_last_locale != _nl_current_LC_CTYPE)
  61     __wcsmbs_load_conv (_nl_current_LC_CTYPE);
  62 }