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/* localeinfo.h -- declarations for internal libc locale interfaces
Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#ifndef _LOCALEINFO_H
#define _LOCALEINFO_H 1
#include <stddef.h>
#include <langinfo.h>
#include <limits.h>
#include <time.h>
#include <sys/types.h>
#include "../intl/loadinfo.h" /* For loaded_l10nfile definition. */
/* Magic number at the beginning of a locale data file for CATEGORY. */
#define LIMAGIC(category) (0x960617de ^ (category))
/* Two special weight constants for the collation data. */
#define FORWARD_CHAR ((wchar_t) 0xfffffffd)
#define ELLIPSIS_CHAR ((wchar_t) 0xfffffffe)
#define IGNORE_CHAR ((wchar_t) 0xffffffff)
/* We use a special value for the usage counter in `locale_data' to
signal that this data must never be removed anymore. */
#define MAX_USAGE_COUNT (UINT_MAX - 1)
#define UNDELETABLE UINT_MAX
/* Structure describing locale data in core for a category. */
struct locale_data
{
const char *name;
const char *filedata; /* Region mapping the file data. */
off_t filesize; /* Size of the file (and the region). */
int mmaped; /* If nonzero the data is mmaped. */
unsigned int usage_count; /* Counter for users. */
unsigned int nstrings; /* Number of strings below. */
union locale_data_value
{
const wchar_t *wstr;
const char *string;
unsigned int word;
}
values[0]; /* Items, usually pointers into `filedata'. */
};
/* We know three kinds of collation sorting rules. */
enum coll_sort_rule
{
illegal_0__,
sort_forward,
sort_backward,
illegal_3__,
sort_position,
sort_forward_position,
sort_backward_position,
sort_mask
};
/* We can map the types of the entries into a few categories. */
enum value_type
{
none,
string,
stringarray,
byte,
bytearray,
word,
stringlist
};
/* Structure to access `era' information from LC_TIME. */
struct era_entry
{
u_int32_t direction; /* Contains '+' or '-'. */
int32_t offset;
int32_t start_date[3];
int32_t stop_date[3];
const char name_fmt[0];
};
/* For each category declare the variable for the current locale data. */
#define DEFINE_CATEGORY(category, category_name, items, a, b, c, d) \
extern struct locale_data *_nl_current_##category;
#include "categories.def"
#undef DEFINE_CATEGORY
extern const char *const _nl_category_names[LC_ALL + 1];
extern const size_t _nl_category_name_sizes[LC_ALL + 1];
extern struct locale_data * *const _nl_current[LC_ALL + 1];
/* Name of the standard locales. */
extern const char _nl_C_name[];
extern const char _nl_POSIX_name[];
/* Extract the current CATEGORY locale's string for ITEM. */
#define _NL_CURRENT(category, item) \
(_nl_current_##category->values[_NL_ITEM_INDEX (item)].string)
/* Extract the current CATEGORY locale's word for ITEM. */
#define _NL_CURRENT_WORD(category, item) \
(_nl_current_##category->values[_NL_ITEM_INDEX (item)].word)
/* This is used in lc-CATEGORY.c to define _nl_current_CATEGORY. */
#define _NL_CURRENT_DEFINE(category) \
extern struct locale_data _nl_C_##category; \
struct locale_data *_nl_current_##category = &_nl_C_##category
/* Load the locale data for CATEGORY from the file specified by *NAME.
If *NAME is "", use environment variables as specified by POSIX,
and fill in *NAME with the actual name used. The directories
listed in LOCALE_PATH are searched for the locale files. */
extern struct locale_data *_nl_find_locale (const char *locale_path,
size_t locale_path_len,
int category, const char **name);
/* Try to load the file described by FILE. */
extern void _nl_load_locale (struct loaded_l10nfile *file, int category);
/* Free all resource. */
extern void _nl_unload_locale (struct locale_data *locale);
/* Free the locale and give back all memory if the usage count is one. */
extern void _nl_remove_locale (int locale, struct locale_data *data);
/* Return `era' entry which corresponds to TP. Used in strftime. */
extern struct era_entry *_nl_get_era_entry (const struct tm *tp);
/* Return `alt_digit' which corresponds to NUMBER. Used in strftime. */
extern const char *_nl_get_alt_digit (unsigned int number);
/* Global variables for LC_COLLATE category data. */
extern const u_int32_t *__collate_table;
extern const u_int32_t *__collate_extra;
extern const u_int32_t *__collate_element_hash;
extern const char *__collate_element_strings;
extern const wchar_t *__collate_element_values;
extern const u_int32_t *__collate_symbol_hash;
extern const char *__collate_symbol_strings;
extern const u_int32_t *__collate_symbol_classes;
#endif /* localeinfo.h */
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