wcsmbs/wcsmbsload.h

   1 /* Copyright (C) 1998-2017 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, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #ifndef _WCSMBSLOAD_H
  20 #define _WCSMBSLOAD_H   1
  21
  22 #include <locale.h>
  23 #include <wchar.h>
  24 #include <locale/localeinfo.h>
  25
  26
  27 /* Contains pointers to the used functions in the `gconv' modules.  */
  28 struct gconv_fcts
  29   {
  30     struct __gconv_step *towc;
  31     size_t towc_nsteps;
  32     struct __gconv_step *tomb;
  33     size_t tomb_nsteps;
  34   };
  35
  36 /* Set of currently active conversion functions.  */
  37 extern const struct gconv_fcts __wcsmbs_gconv_fcts_c attribute_hidden;
  38
  39 /* Load conversion functions for the currently selected locale.  */
  40 extern void __wcsmbs_load_conv (struct __locale_data *new_category);
  41
  42 /* Clone the current `__wcsmbs_load_conv' value.  */
  43 extern void __wcsmbs_clone_conv (struct gconv_fcts *copy);
  44
  45 /* Find the conversion functions for converting to and from NAME.  */
  46 extern int __wcsmbs_named_conv (struct gconv_fcts *copy, const char *name);
  47
  48 /* Function used for the `private.cleanup' hook.  */
  49 extern void _nl_cleanup_ctype (struct __locale_data *) attribute_hidden;
  50
  51
  52 #include <iconv/gconv_int.h>
  53
  54
  55 /* Load the function implementation if necessary.  */
  56 extern struct __gconv_step *__wcsmbs_getfct (const char *to, const char *from,
  57                                              size_t *nstepsp)
  58      attribute_hidden;
  59
  60 extern const struct __locale_data _nl_C_LC_CTYPE attribute_hidden;
  61
  62 /* Check whether the LC_CTYPE locale changed since the last call.
  63    Update the pointers appropriately.  */
  64 static inline const struct gconv_fcts *
  65 get_gconv_fcts (struct __locale_data *data)
  66 {
  67   if (__glibc_unlikely (data->private.ctype == NULL))
  68     {
  69       if (__glibc_unlikely (data == &_nl_C_LC_CTYPE))
  70         return &__wcsmbs_gconv_fcts_c;
  71       __wcsmbs_load_conv (data);
  72     }
  73   return data->private.ctype;
  74 }
  75
  76 #endif  /* wcsmbsload.h */