locale/localeinfo.h

   1 /* localeinfo.h -- declarations for internal libc locale interfaces
   2 Copyright (C) 1995 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 Library General Public License as
   7 published by the Free Software Foundation; either version 2 of the
   8 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 Library General Public License for more details.
  14
  15 You should have received a copy of the GNU Library General Public
  16 License along with the GNU C Library; see the file COPYING.LIB.  If
  17 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
  18 Cambridge, MA 02139, USA.  */
  19
  20 #ifndef _LOCALEINFO_H
  21 #define _LOCALEINFO_H 1
  22
  23 #include <stddef.h>
  24 #include <langinfo.h>
  25 #include <sys/types.h>
  26
  27 /* Magic number at the beginning of a locale data file for CATEGORY.  */
  28 #define LIMAGIC(category)       (0x051472CA ^ (category))
  29
  30 /* Structure describing locale data in core for a category.  */
  31 struct locale_data
  32   {
  33     const char *filedata;       /* Region mapping the file data.  */
  34     off_t filesize;             /* Size of the file (and the region).  */
  35
  36     unsigned int nstrings;      /* Number of strings below.  */
  37     const char *strings[0];     /* Items, usually pointers into `filedata'.  */
  38   };
  39
  40
  41 /* For each category declare the variable for the current locale data.  */
  42 #define DEFINE_CATEGORY(category, category_name, items, a, b, c, d) \
  43 extern const struct locale_data *_nl_current_##category;
  44 #include "categories.def"
  45 #undef  DEFINE_CATEGORY
  46
  47 extern const char *const _nl_category_names[LC_ALL];
  48 extern const struct locale_data * *const _nl_current[LC_ALL];
  49
  50 /* Extract the current CATEGORY locale's string for ITEM.  */
  51 #define _NL_CURRENT(category, item) \
  52   (_nl_current_##category->strings[_NL_ITEM_INDEX (item)])
  53
  54 /* This is used in lc-CATEGORY.c to define _nl_current_CATEGORY.  */
  55 #define _NL_CURRENT_DEFINE(category) \
  56   extern const struct locale_data _nl_C_##category; \
  57   const struct locale_data *_nl_current_##category = &_nl_C_##category
  58
  59 /* Load the locale data for CATEGORY from the file specified by *NAME.
  60    If *NAME is "", use environment variables as specified by POSIX,
  61    and fill in *NAME with the actual name used.  */
  62 extern struct locale_data *_nl_load_locale (int category, char **name);
  63
  64 /* Free the locale data read in by a `_nl_load_locale' call.  */
  65 extern void _nl_free_locale (struct locale_data *);
  66
  67
  68 #endif  /* localeinfo.h */