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/* User interface for extracting locale-dependent parameters.
Copyright (C) 1995, 1996, 1997, 1999, 2000 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. */
#include <stddef.h>
#include <time.h>
#include <langinfo.h>
#include <limits.h>
#include <errno.h>
#include <locale.h>
#include <langinfo.h>
#include <sys/types.h>
/* 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'. */
};
/* For each category declare two external variables (with weak references):
* extern const struct locale_data *_nl_current_CATEGORY;
* This points to the current locale's in-core data for CATEGORY.
* extern const struct locale_data _nl_C_CATEGORY;
* This contains the built-in "C"/"POSIX" locale's data for CATEGORY.
* Both are weak references; if &_nl_current_CATEGORY is zero,
* then nothing is using the locale data. */
#define DEFINE_CATEGORY(category, category_name, items, a, b, c, d) \
extern struct locale_data *_nl_current_##category; \
extern struct locale_data _nl_C_##category;
#include "categories.c"
#undef DEFINE_CATEGORY
/* Array indexed by category of pointers to _nl_C_CATEGORY slots.
* Elements are zero for categories whose data is never used. */
struct locale_data *const _nl_C[] =
{
#define DEFINE_CATEGORY(category, category_name, items, a, b, c, d) \
[category] = &_nl_C_##category,
#include "categories.c"
#undef DEFINE_CATEGORY
};
/* Return a string with the data for locale-dependent parameter ITEM. */
char * nl_langinfo (nl_item item)
{
int category = _NL_ITEM_CATEGORY (item);
unsigned int index = _NL_ITEM_INDEX (item);
const struct locale_data *data;
if (category < 0 || category >= LC_ALL)
/* Bogus category: bogus item. */
return (char *) "";
data = _nl_C[category];
if (index >= data->nstrings)
/* Bogus index for this category: bogus item. */
return (char *) "";
/* Return the string for the specified item. */
return (char *) data->values[index].string;
}
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